Medical and surgical apparatus, namely, a retro-reflective passive lens; medical and surgical apparatus for use in optical navigation applications; medical and surgical apparatus and instruments, namely, devices used in surgery to position surgical instruments
Retro-reflective markers for use in connection with an infrared navigation or positioning system during surgical, therapeutic, and diagnostic procedures; retro-reflective marker for use in optical navigation applications; optical tracking apparatus, namely markers to track the position and orientation of instruments, devices, and anatomy during surgical, therapeutic, and diagnostic procedures
A device comprising includes an insertable structure usable in a surgical theater, a fiber optic line extending through the structure, wherein a computer system is configured to determine a shape of the fiber optic line extending through the structure, and one or more electromagnetic sensors wrapped at least in part around one or more portions of the fiber optic line, wherein the computer system is configured to determine a position and orientation of the one or more electromagnetic sensors, wherein the computer system is configured to determine a shape and a position of the structure based on the determined shape of the fiber optic line extending through the structure and the determined position and orientation of the one or more electromagnetic sensors.
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
A61B 1/00 - Instruments pour procéder à l'examen médical de l'intérieur des cavités ou des conduits du corps par inspection visuelle ou photographique, p. ex. endoscopesDispositions pour l'éclairage dans ces instruments
A61B 5/00 - Mesure servant à établir un diagnostic Identification des individus
A61B 5/06 - Dispositifs autres que ceux à radiation, pour détecter ou localiser les corps étrangers
4.
RETRO-REFLECTIVE MARKER WITH UNIFORMLY DISTRIBUTED MICROELEMENTS
An apparatus including a retro-reflective section. The retro-reflective section includes an outer surface, an inner surface, and a plurality of retro-reflective microelement. One or more of the plurality of retro-reflective microelements include a plurality of reflective surfaces. Each of the plurality of retro-reflective microelements extends from the inner surface at a location different from locations of the other retro-reflective microelements, and each of the plurality of retro-reflective microelements comprises a central axis extending along a direction that corresponds to a surface normal of the outer surface.
G02B 5/124 - Réflecteurs reflex du type en sommet de cube, en trièdre ou en réflecteur triple plusieurs éléments réfléchissants faisant partie d'une plaque ou d'une feuille formant un tout
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
(1) Calibration device for an optical tracking system for calibrating, assessing the accuracy of, and applying a correction to the optical tracking system, and computer software for the operation of the calibration device
(2) Calibration device for an optical tracking system for medical and surgical use for calibrating, assessing the accuracy of, and applying a correction to the optical tracking system, and computer software for the operation of the calibration device
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Calibration device for an optical tracking system for calibrating, assessing the accuracy of, and applying a correction to the optical tracking system, and computer software for the operation of the calibration device. Calibration device for an optical tracking system for medical and surgical use for calibrating, assessing the accuracy of, and applying a correction to the optical tracking system, and computer software for the operation of the calibration device.
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Spatial measurement devices, namely electronic remote motion measurement and position detection devices instruments for use in industrial applications to measure the position and/or orientation of target objects industrial components, and recorded computer software for the operation of the foregoing devices Spatial measurement devices, namely, electronic remote motion measurement and position detection devices instruments for use in medical applications to measure the position and/or orientation of analytical diagnostic or therapeutic devices with respect to a patient during analytical diagnostic or therapeutic medical procedures, for measuring motion of a living body for analysis diagnosis or therapy, and recorded computer software sold as a unit therewith for the operation of the foregoing devices
An apparatus comprising a retro-reflective marker and a device configured to receive the retro-reflective marker in a socket located on the top surface of the device. The retro-reflective marker comprises a retro-reflective layer having a first retro-reflectance capability. The retro-reflective layer comprises a textured surface, a portion of the textured surface having a surface topology such that surface normal vectors positioned across the portion extend from the portion of the textured surface in different directions, and a plurality of retro-reflective micro elements distributed across the textured surface. The retro-reflective marker further comprises a border defining a retro-reflective area of the retro-reflective layer, where a portion of the border provides a second retro-reflectance capability lower than the first retro-reflectance capability.
G02B 5/13 - Réflecteurs reflex comprenant une surface courbe de réfraction plusieurs éléments réfringents à surface courbe faisant partie d'un même corps
G02B 5/132 - Réflecteurs reflex comprenant une surface courbe de réfraction avec des moyens de support individuel des réflecteurs
G02B 5/136 - Réflecteurs reflex plusieurs éléments réfléchissants formant partie d'un même corps
G02B 26/08 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables pour commander la direction de la lumière
G01S 17/66 - Systèmes de poursuite utilisant d'autres ondes électromagnétiques que les ondes radio
(1) Medical and surgical apparatus, namely, a retro-reflective passive lens; medical and surgical apparatus for use in optical navigation applications; medical and surgical apparatus and instruments, namely, devices used in surgery to position surgical instruments
Medical and surgical apparatus, namely, a retro-reflective passive lens; medical and surgical apparatus for use in optical navigation applications; medical and surgical apparatus and instruments, namely, devices used in surgery to position surgical instruments.
Magneto-mechanical capsules can include a body, a first magnet attached to a first end of the body, a second magnet attached to a second end of the body, and a third magnet disposed between the first magnet and the second magnet. In some cases, the third magnet is configured to oscillate in response to an external magnetic field to produce a second magnetic field.
A61B 5/06 - Dispositifs autres que ceux à radiation, pour détecter ou localiser les corps étrangers
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
A61B 90/00 - Instruments, outillage ou accessoires spécialement adaptés à la chirurgie ou au diagnostic non couverts par l'un des groupes , p. ex. pour le traitement de la luxation ou pour la protection de bords de blessures
G01V 3/08 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation fonctionnant au moyen de champs magnétiques ou électriques produits ou modifiés par les objets ou les structures géologiques, ou par les dispositifs de détection
G01V 15/00 - Marques d'identification fixées ou associées à un objet afin de permettre la détection de l'objet
Magneto-mechanical capsules can include a body, a first magnet attached to a first end of the body, a second magnet attached to a second end of the body, and a third magnet disposed between the first magnet and the second magnet. In some cases, the third magnet is configured to oscillate in response to an external magnetic field to produce a second magnetic field.
A61B 5/06 - Dispositifs autres que ceux à radiation, pour détecter ou localiser les corps étrangers
13.
ELECTROMAGNETIC TRACKING AND POSITION MEASUREMENT SYSTEM HAVING INTERFERENCE REDUCTION FROM NEARBY INSTRUMENTATION BY FILTERING TIME-DIVISION MULTIPLEXED SIGNAL VIA STEP FUNCTION
An electromagnetic tracking (EMT) system is configured for determining a frequency for generating at least a portion of a magnetic field signal using a transmitter coil of a plurality of transmitter coils. The EMT system configures a time-division multiplexed (TDM) control signal configured to cause the transmitter coil to transmit bursts of the magnetic field signal at the frequency. The EMT system configures a filter for filtering the TDM control signal, the filter configured to shape each burst to reduce or eliminate a harmonic artifact of the bursts. The EMT system causes the transmitter coil to generate the shaped bursts of the magnetic field signal. The EMT system receives, from a sensor, a sensor signal that corresponds to the magnetic field signal, the sensor including the output response indicative of the location of the sensor relative to the transmitter.
A61B 5/06 - Dispositifs autres que ceux à radiation, pour détecter ou localiser les corps étrangers
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Calibration device for an optical tracking system for calibrating, assessing the accuracy of, and applying a correction to the optical tracking system, and computer software for the operation of the calibration device Calibration device for an optical tracking system for medical and surgical use for calibrating, assessing the accuracy of, and applying a correction to the optical tracking system, and computer software for the operation of the calibration device
(1) Electro-magnetic motion measurement and position detection devices for medical use, for use in measuring the position and/or orientation of analytical or therapeutic devices with respect to a patient during analytical or therapeutic procedures, for measuring motion of a living body for analysis or therapy, and computer software sold as a unit therewith for the operation of the foregoing devices
(1) Electro-magnetic motion measurement and position detection devices for medical use, for use in measuring the position and/or orientation of analytical or therapeutic devices with respect to a patient during analytical or therapeutic procedures, for measuring motion of a living body for analysis or therapy, and computer software sold as a unit therewith for the operation of the foregoing devices
(1) Electro-magnetic motion measurement and position detection devices for medical use, for use in measuring the position and/or orientation of analytical or therapeutic devices with respect to a patient during analytical or therapeutic procedures, for measuring motion of a living body for analysis or therapy, and computer software sold as a unit therewith for the operation of the foregoing devices
Electro-magnetic motion measurement and position detection devices for medical use, for use in measuring the position and/or orientation of analytical or therapeutic devices with respect to a patient during analytical or therapeutic procedures, for measuring motion of a living body for analysis or therapy, and computer software sold as a unit therewith for the operation of the foregoing devices.
Electro-magnetic motion measurement and position detection devices for medical use, for use in measuring the position and/or orientation of analytical or therapeutic devices with respect to a patient during analytical or therapeutic procedures, for measuring motion of a living body for analysis or therapy, and computer software sold as a unit therewith for the operation of the foregoing devices.
Electro-magnetic motion measurement and position detection devices for medical use, for use in measuring the position and/or orientation of analytical or therapeutic devices with respect to a patient during analytical or therapeutic procedures, for measuring motion of a living body for analysis or therapy, and computer software sold as a unit therewith for the operation of the foregoing devices.
21.
Retro-reflective marker with uniformly distributed microelements
An apparatus including a retro-reflective section. The retro-reflective section includes an outer surface, an inner surface, and a plurality of retro-reflective microelement. One or more of the plurality of retro-reflective microelements include a plurality of reflective surfaces. Each of the plurality of retro-reflective microelements extends from the inner surface at a location different from locations of the other retro-reflective microelements, and each of the plurality of retro-reflective microelements comprises a central axis extending along a direction that corresponds to a surface normal of the outer surface.
G02B 5/124 - Réflecteurs reflex du type en sommet de cube, en trièdre ou en réflecteur triple plusieurs éléments réfléchissants faisant partie d'une plaque ou d'une feuille formant un tout
Medical and surgical apparatus, namely, a retro-reflective passive lens; medical and surgical apparatus for use in optical navigation applications; medical and surgical apparatus and instruments, namely, devices used in surgery to position surgical instruments
A marker comprising: a retro-reflective layer having a first retro-reflectance capability and a border defining a retro-reflective area of the retro-reflective layer. The retro-reflective layer includes a textured surface, a portion of the textured surface having a surface topology such that surface normal vectors positioned across the portion extend from the portion of the textured surface in different directions. A plurality of retro-reflective micro elements are distributed across the textured surface. A portion of the border provides a second retro-reflectance capability lower than the first retro-reflectance capability.
Methods, systems, and apparatus, including computer programs encoded on computer storage media, for tracking fiber optic shaping. In some implementations, a server obtains optical signals reflected through a fiber, the fiber comprising one or more embedded sensors and a nano-magnetometer embedded at a distal location of the fiber. The server determines a frequency shift of each of the reflected optical signals, the frequency shift imparted on the reflected optical signals by the one or more embedded sensors. The server determines a phase shift of each of the reflected optical signals, the phase shift imparted on the reflected optical signals by the nano-magnetometer. The server determines characteristics of the fiber using the determined frequency and the phase shift of each of the reflected optical signals, the characteristics comprises a shape of the fiber and a location of the fiber in relation to an external reference.
A61B 5/243 - Détection de champs biomagnétiques, p. ex. de champs magnétiques produits par des courants bioélectriques spécialement adaptée aux signaux magnétocardiographiques [MCG]
A61B 90/00 - Instruments, outillage ou accessoires spécialement adaptés à la chirurgie ou au diagnostic non couverts par l'un des groupes , p. ex. pour le traitement de la luxation ou pour la protection de bords de blessures
A computer-implemented method includes receiving a first set of inductance data and a second set of inductance data, each representing one or more inductance measurements when a distorter is absent and when the distorter is present, respectively. The method includes training a machine learning system for compensating for distortion, in which the machine learning system is configured to generate an estimated value of distortion indicating an amount of distortion present in the electromagnetic field. The method includes receiving a set of inductance data and generating, by the trained machine learning system, the estimated value of distortion using the additional set of inductance data and measured pose data that represents position and orientation information for one or more sensors. The method includes providing the estimated value of the distortion for application to a computing device for calibrating the one or more sensors by compensating for the estimated value of the distortion.
A marker comprising: a retro-reflective layer having a first retro-reflectance capability and a border defining a retro-reflective area of the retro-reflective layer. The retro-reflective layer includes a textured surface, a portion of the textured surface having a surface topology such that surface normal vectors positioned across the portion extend from the portion of the textured surface in different directions. A plurality of retro-reflective micro elements are distributed across the textured surface. A portion of the border provides a second retro-reflectance capability lower than the first retro-reflectance capability.
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Spatial measurement devices, namely electronic motion measurement and position detection devices for use in industrial applications to measure the position and/or orientation of target objects, and computer software for the operation of the foregoing devices. Spatial measurement devices, namely, electronic motion measurement and position detection devices for use in medical applications to measure the position and/or orientation of analytical or therapeutic devices with respect to a patient during analytical or therapeutic procedures, for measuring motion of a living body for analysis or therapy, and computer software sold as a unit therewith for the operation of the foregoing devices.
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
(1) Spatial measurement devices, namely electronic motion measurement and position detection devices for use in industrial applications to measure the position and orientation of target objects, and computer software for the operation of the foregoing devices.
(2) Spatial measurement devices, namely, electronic motion measurement and position detection devices for use in medical applications to measure the position and orientation of analytical or therapeutic devices with respect to a patient during analytical or therapeutic procedures, for measuring motion of a living body for analysis or therapy, and computer software sold as a unit therewith for the operation of the foregoing devices.
A system includes a projector to project a pattern of dots within a tracking volume, a medical instrument having markers and positioned within the tracking volume, an image capture unit to capture images of the medical instrument and the markers. The image capture unit captures images of the pattern of dots within the tracking volume, and a computing device performs operations that include initiating capture of at least two images of the medical instrument and the markers, determining a three-dimensional position of the markers from the captured images of the markers, initiating projection of the pattern of dots within the tracking volume, initiating capture, of at least two images of a portion of the pattern of dots, and determining three-dimensional positions of dots in the portion of dots from the captured images.
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Electro-magnetic motion measurement and position detectors that emit and sense electro-magnetic energy for use in measuring the position and orientation of target objects, and recorded computer software for the operation of the foregoing devices sold as a unit therewith, none of the aforementioned for medical use Electro-magnetic motion measurement and position detectors for medical use, for use in measuring the position and orientation of diagnostic or therapeutic devices with respect to a patient during diagnostic or therapeutic procedures, for measuring motion of a living body for diagnosis or therapy, and recorded computer software sold as a unit therewith for the operation of the foregoing devices
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Electro-magnetic motion measurement and position detectors that emit and sense electro-magnetic energy for use in measuring the position and orientation of target objects, and recorded computer software for the operation of the foregoing devices sold as a unit therewith, none of the aforementioned for medical use Electro-magnetic motion measurement and position detectors for medical use, for use in measuring the position and orientation of diagnostic or therapeutic devices with respect to a patient during diagnostic or therapeutic procedures, for measuring motion of a living body for diagnosis or therapy, and recorded computer software sold as a unit therewith for the operation of the foregoing devices
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Electro-magnetic motion measurement and position detectors that emit and sense electro-magnetic energy for use in measuring the position and orientation of target objects, and recorded computer software for the operation of the foregoing devices sold as a unit therewith, none of the aforementioned for medical use Electro-magnetic motion measurement and position detectors for medical use, for use in measuring the position and orientation of diagnostic or therapeutic devices with respect to a patient during diagnostic or therapeutic procedures, for measuring motion of a living body for diagnosis or therapy, and recorded computer software sold as a unit therewith for the operation of the foregoing devices
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Electro-magnetic motion measurement and position detectors that emit and sense electro-magnetic energy for use in measuring the position and orientation of target objects, and recorded computer software for the operation of the foregoing devices sold as a unit therewith, none of the aforementioned for medical use Electro-magnetic motion measurement and position detectors for medical use, for use in measuring the position and orientation of diagnostic or therapeutic devices with respect to a patient during diagnostic or therapeutic procedures, for measuring motion of a living body for diagnosis or therapy, and recorded computer software sold as a unit therewith for the operation of the foregoing devices
34.
RECONFIGURABLE TRANSMITTER ARRAY FOR ELECTROMAGNETIC TRACKING SYSTEMS
A magnetic tracking system is configured to determine an object pose of a tracked object in an environment of the magnetic tracking system. The tracking system includes a transmitter assembly that includes a transmitting coil configured to generate a magnetic signal indicative of an object pose of a tracked object with respect to the transmitter assembly and a marker that visually identifies a pose of the transmitter assembly with respect to a camera device. The camera device captures at least one image of the transmitter assembly. A computing device determines, based on the image, a pose for the transmitter assemblies in the image. Based on the magnetic signal and the pose associated with the transmitter assembly, the computing device determines the object pose of the tracked object in the environment.
G01D 5/20 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques influençant la valeur d'un courant ou d'une tension en faisant varier l'inductance, p. ex. une armature mobile
G06T 7/70 - Détermination de la position ou de l'orientation des objets ou des caméras
H04N 5/33 - Transformation des rayonnements infrarouges
A computing device implemented method includes receiving data representing strains experienced at multiple positions along a fiber, the fiber being positioned within a surgical theater, determining a shape of the fiber from the received data representing the stains experienced at the multiple positions along the fiber by using a machine learning system, the machine learning system being trained using data representing shapes of fibers and data representing strains at multiple positions along each of the fibers, and representing the determined shape as functions of an orientation of a center of the fiber, a first radial axis of the fiber, and a second radial axis of the fiber.
A61B 90/00 - Instruments, outillage ou accessoires spécialement adaptés à la chirurgie ou au diagnostic non couverts par l'un des groupes , p. ex. pour le traitement de la luxation ou pour la protection de bords de blessures
G01B 11/16 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la déformation dans un solide, p. ex. indicateur optique de déformation
36.
Electromagnetic position measurement system with sensor parasitic loop compensation
A magnetic tracking device includes a sensor configured to generate a sensor electromotive force (EMF). The device includes a mechanism configured to select between a first operating mode in which the sensor generates the sensor EMF when receiving the magnetic field and a second operating mode in which the sensor generates a reduced amount of the sensor EMF when receiving the magnetic field. An interconnecting circuit generates a parasitic EMF in each of the first operating mode and the second operating mode. The interconnecting circuit connects to a processing device which receives a first measurement for the first operating mode, the first measurement representing the sensor EMF and the parasitic EMF, receives a second measurement for the second operating mode, the second measurement representing the parasitic EMF, compares the first measurement and the second measurement, and determines an approximate value of the sensor EMF.
A61B 5/00 - Mesure servant à établir un diagnostic Identification des individus
A61B 5/06 - Dispositifs autres que ceux à radiation, pour détecter ou localiser les corps étrangers
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
G01V 3/10 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation fonctionnant au moyen de champs magnétiques ou électriques produits ou modifiés par les objets ou les structures géologiques, ou par les dispositifs de détection en utilisant des cadres inducteurs
37.
FIELD GENERATOR ORIENTATION FOR MAGNETIC TRACKING IN PLANAR FIELD GENERATING ASSEMBLIES
A magnetic tracking system includes a field generator assembly for generating a plurality of magnetic fields, wherein each magnetic field is generated by a respective magnetic field generator of the field generator assembly, at least one of the magnetic field generators having a first angular orientation and at least another of the magnetic field generator having a second angular orientation, different from the first angular orientation. The magnetic tracking system includes a magnetic sensor to measure the plurality of magnetic fields, and a computing device configured to compute a position and orientation of the magnetic sensor within the magnetic fields being measured by the sensor. The first angular orientation is between one and fifteen degrees and the second angular orientation is between one and fifteen degrees.
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
G01D 5/20 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques influençant la valeur d'un courant ou d'une tension en faisant varier l'inductance, p. ex. une armature mobile
A device comprising includes an insertable structure usable in a surgical theater, a fiber optic line extending through the structure, wherein a computer system is configured to determine a shape of the fiber optic line extending through the structure, and one or more electromagnetic sensors wrapped at least in part around one or more portions of the fiber optic line, wherein the computer system is configured to determine a position and orientation of the one or more electromagnetic sensors, wherein the computer system is configured to determine a shape and a position of the structure based on the determined shape of the fiber optic line extending through the structure and the determined position and orientation of the one or more electromagnetic sensors.
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
A61B 1/00 - Instruments pour procéder à l'examen médical de l'intérieur des cavités ou des conduits du corps par inspection visuelle ou photographique, p. ex. endoscopesDispositions pour l'éclairage dans ces instruments
A61B 5/00 - Mesure servant à établir un diagnostic Identification des individus
A61B 5/06 - Dispositifs autres que ceux à radiation, pour détecter ou localiser les corps étrangers
A system comprising: two or more tracking sensors that are configured to provide pose information, wherein the two or more tracking sensors include: a first tracking sensor configured to provide a reference coordinate system; and a second tracking sensor that resides in the reference coordinate system relative to the first tracking sensor; one or more segments of optical fiber affixed to the second tracking sensor, wherein the one or more segments of optical fiber are tracked relative to the second tracking sensor; an interrogator that is configured to read measurements from the one or more segments of optical fiber; and a computing device configured to execute an algorithmic method on data from the one or more segments of optical fiber, wherein measurements taken from the one or more segments of optical fiber are placed in the context of pose information from the two or more tracking sensors.
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
A system comprising: one or more field generating coils configured to generate a magnetic field; a sensor comprising a shell that contains a ferrofluid, the sensor configured to be introduced in proximity to the magnetic field, wherein the ferrofluid causes distortion of the magnetic field when the ferrofluid is in proximity to the magnetic field; and one or more field measuring coils configured to: measure a characteristic of the magnetic field when the ferrofluid is in proximity to the magnetic field; and provide, to a computing device, a signal representative of the measured characteristic of the magnetic field, wherein the computing device is configured to determine one or both of a position and an orientation of the sensor based on the measured characteristic of the magnetic field.
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
A61B 5/06 - Dispositifs autres que ceux à radiation, pour détecter ou localiser les corps étrangers
A61B 90/00 - Instruments, outillage ou accessoires spécialement adaptés à la chirurgie ou au diagnostic non couverts par l'un des groupes , p. ex. pour le traitement de la luxation ou pour la protection de bords de blessures
G01D 5/20 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques influençant la valeur d'un courant ou d'une tension en faisant varier l'inductance, p. ex. une armature mobile
A retro-reflective marker comprising a bare retro-reflective layer; a protective layer with a near-infrared (NIR) wavelength specific anti-reflective coating; and a border with an NIR absorbent coating.
Electromagnetic tracking and position measurement system having interference reduction from nearby instrumentation by filtering time-division multiplexed signal via step function
An electromagnetic tracking (EMT) system is configured for determining a frequency for generating at least a portion of a magnetic field signal using a transmitter coil of a plurality of transmitter coils. The EMT system configures a time-division multiplexed (TDM) control signal configured to cause the transmitter coil to transmit bursts of the magnetic field signal at the frequency. The EMT system configures a filter for filtering the TDM control signal, the filter configured to shape each burst to reduce or eliminate a harmonic artifact of the bursts. The EMT system causes the transmitter coil to generate the shaped bursts of the magnetic field signal. The EMT system receives, from a sensor, a sensor signal that corresponds to the magnetic field signal, the sensor including the output response indicative of the location of the sensor relative to the transmitter.
A61B 5/06 - Dispositifs autres que ceux à radiation, pour détecter ou localiser les corps étrangers
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
43.
Error compensation for a three-dimensional tracking system
Tracking system for tracking one or more reflective markers includes at least two optical sensors configured to obtain image data of an environment that includes at least one marker. The tracking system obtains the image data from the at least two optical sensors. The tracking system is configured for extracting, from the image data, optical signatures representing reflections of the optical signal from at least one marker, determining optical centroids of the optical signatures of the at least one marker, estimating an initial pose for at least one marker, determining offset error vectors from the optical centroids of the at least one marker based on the initial pose, determining corrected optical centroids based on the offset error vectors and the optical centroids, and determining a corrected three dimensional position of the marker in the environment based on the corrected optical centroids of the marker.
A magnetic tracking device includes a sensor configured to generate a sensor electromotive force (EMF). The device includes a mechanism configured to select between a first operating mode in which the sensor generates the sensor EMF when receiving the magnetic field and a second operating mode in which the sensor generates a reduced amount of the sensor EMF when receiving the magnetic field. An interconnecting circuit generates a parasitic EMF in each of the first operating mode and the second operating mode. The interconnecting circuit connects to a processing device which receives a first measurement for the first operating mode, the first measurement representing the sensor EMF and the parasitic EMF, receives a second measurement for the second operating mode, the second measurement representing the parasitic EMF, compares the first measurement and the second measurement, and determines an approximate value of the sensor EMF.
A61B 5/00 - Mesure servant à établir un diagnostic Identification des individus
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
A61B 5/06 - Dispositifs autres que ceux à radiation, pour détecter ou localiser les corps étrangers
G01V 3/10 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation fonctionnant au moyen de champs magnétiques ou électriques produits ou modifiés par les objets ou les structures géologiques, ou par les dispositifs de détection en utilisant des cadres inducteurs
45.
Magnetic tracking calibration via distortion correction for electromagnetic fields using inside-out tracking
A magnetic tracking device is configured to track an object in an environment by receiving a measurement of the non-magnetic signal and a corresponding measurement of the magnetic signal for a location of the magnetic tracking device in the environment. The magnetic tracking device estimates, based on the measurement of the non-magnetic signal, a non-magnetic pose of the magnetic tracking device in the environment for the location. The device estimates, based on the measurement of the magnetic signal, a magnetic pose of the magnetic tracking device in the environment for the location. The device determines a difference between the magnetic pose estimate and the non-magnetic pose estimate for the location. The device determines a magnetic distortion correction value for the location based on the difference. The magnetic tracking device generates a distortion correction model including the distortion value and outputs a representation of the distortion correction model.
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
A61B 5/06 - Dispositifs autres que ceux à radiation, pour détecter ou localiser les corps étrangers
A61B 90/00 - Instruments, outillage ou accessoires spécialement adaptés à la chirurgie ou au diagnostic non couverts par l'un des groupes , p. ex. pour le traitement de la luxation ou pour la protection de bords de blessures
G01D 5/12 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques
An electromagnetic tracking system includes a magnetic transmitter configured to output magnetic fields, a receiver responsive to the magnetic fields, an electronics assembly having conductive elements that cause distortion to the magnetic fields, and an output mechanism configured to output a position of the receiver relative to the magnetic transmitter, wherein the magnetic transmitter has at least one winding disposed around a hollow ferromagnetic core comprised of conductive material through which current is made to flow by the electronics, wherein the electronics assembly is at least partially contained within the hollow portion of the hollow ferromagnetic core. Methods of manufacturing include shaping walls into a hollow shell to surround an electronics assembly, covering the hollow shell with ferromagnetic material, inserting the wrapped hollow shell into a plastic bobbin, and winding the plastic bobbin with coil wire to produce three orthogonal windings.
H01F 27/32 - Isolation des bobines, des enroulements, ou de leurs éléments
H01F 41/061 - Enroulement de feuilles ou de fils conducteurs plats
G01R 33/02 - Mesure de la direction ou de l'intensité de champs magnétiques ou de flux magnétiques
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
A61B 90/00 - Instruments, outillage ou accessoires spécialement adaptés à la chirurgie ou au diagnostic non couverts par l'un des groupes , p. ex. pour le traitement de la luxation ou pour la protection de bords de blessures
A61B 90/50 - Supports pour instruments chirurgicaux, p. ex. bras articulés
47.
Reducing interference between Electromagnetic Tracking systems
A method of reducing a chance of interference between operations of two electromagnetic systems (e.g., AR/VR systems) is provided. The method includes determining one or more first frequencies at which a first electromagnetic system is operating, identifying one or more second frequencies that do not interfere with the determined one or more first frequencies, and setting a second electromagnetic system to operate at the identified one or more second frequencies. Each of the first and the second electromagnetic systems includes a respective magnetic transmitter configured to generate magnetic fields, and a respective magnetic sensor configured to generate signals based on characteristics of the magnetic fields received at the magnetic sensor (e.g., from the respective magnetic transmitter).
A calibration device comprising: a plurality of magnetic sensors positioned at the calibration device, the plurality of magnetic sensors defining a space; a controller configured to be positioned in the space defined by the plurality of magnetic sensors, wherein the controller includes a magnetic transmitter; and one or more processors configured to: cause the magnetic transmitter to generate magnetic fields; receive signals from the plurality of magnetic sensors that are based on characteristics of the magnetic fields received at the plurality of magnetic sensors; calculate, based on the signals received from the plurality of magnetic sensors, positions and orientations of the plurality of magnetic sensors relative to a position and orientation of the magnetic transmitter; and determine whether the calculated positions and orientations of the plurality of magnetic sensors are within one or more threshold limits of known positions and orientations of the plurality of magnetic sensors.
G01R 33/00 - Dispositions ou appareils pour la mesure des grandeurs magnétiques
G01B 7/004 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour mesurer les coordonnées de points
G01C 17/38 - Test, étalonnage ou compensation des compas
G06F 3/0346 - Dispositifs de pointage déplacés ou positionnés par l'utilisateurLeurs accessoires avec détection de l’orientation ou du mouvement libre du dispositif dans un espace en trois dimensions [3D], p. ex. souris 3D, dispositifs de pointage à six degrés de liberté [6-DOF] utilisant des capteurs gyroscopiques, accéléromètres ou d’inclinaison
G06F 3/01 - Dispositions d'entrée ou dispositions d'entrée et de sortie combinées pour l'interaction entre l'utilisateur et le calculateur
49.
Reconfigurable transmitter array for electromagnetic tracking systems
A magnetic tracking system is configured to determine an object pose of a tracked object in an environment of the magnetic tracking system. The tracking system includes a transmitter assembly that includes a transmitting coil configured to generate a magnetic signal indicative of an object pose of a tracked object with respect to the transmitter assembly and a marker that visually identifies a pose of the transmitter assembly with respect to a camera device. The camera device captures at least one image of the transmitter assembly. A computing device determines, based on the image, a pose for the transmitter assemblies in the image. Based on the magnetic signal and the pose associated with the transmitter assembly, the computing device determines the object pose of the tracked object in the environment.
G01D 5/20 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques influençant la valeur d'un courant ou d'une tension en faisant varier l'inductance, p. ex. une armature mobile
G06T 7/70 - Détermination de la position ou de l'orientation des objets ou des caméras
H04N 5/33 - Transformation des rayonnements infrarouges
50.
Determining position and orientation from a Helmholtz device
A method includes receiving, at a magnetic sensor, a series of transmitter signals that are detected as a series of signals corresponding to different locations and/or orientations of a magnetic transmitter emitting a magnetic field, calculating, receiving, at the magnetic sensor, a measurement transmitter signal that is detected as a signal corresponding to a magnetic field provided by the magnetic transmitter, and calculating, based at least on the received measurement sensor signal and the calibration matrix, one or both of an orientation matrix indicative of an orientation of the magnetic sensor relative to the magnetic transmitter and a positional matrix indicative of a position of the magnetic sensor relative to the magnetic transmitter, wherein the series of transmitter signals are transmitted from the same physical location relative to the magnetic sensor.
G01R 33/00 - Dispositions ou appareils pour la mesure des grandeurs magnétiques
G01R 33/34 - Détails de structure, p. ex. résonateurs
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
A system comprising: a magnetic transmitter configured to generate magnetic fields; a magnetic sensor configured to generate signals based on characteristics of the magnetic fields; and one or more computer systems configured to: cause the magnetic transmitter to generate a first plurality of magnetic fields at a first frequency; receive a first plurality of signals from the magnetic sensor; determine data indicative of a position and orientation of the magnetic sensor at a first position of the magnetic sensor; determine a distortion term that corresponds to a first position of the magnetic sensor; cause the magnetic transmitter to generate a third plurality of magnetic fields at the first frequency; receive a third plurality of signals from the magnetic sensor; and determine a second position and orientation of the magnetic sensor relative to the magnetic transmitter, wherein the first frequency is greater than the second frequency.
G01V 3/10 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation fonctionnant au moyen de champs magnétiques ou électriques produits ou modifiés par les objets ou les structures géologiques, ou par les dispositifs de détection en utilisant des cadres inducteurs
G01V 3/38 - Traitement de données, p. ex. pour l'analyse, pour l'interprétation ou pour la correction
G01V 3/08 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation fonctionnant au moyen de champs magnétiques ou électriques produits ou modifiés par les objets ou les structures géologiques, ou par les dispositifs de détection
52.
Distortion correction for tracking an object in a magnetic field
A system is configured to model a magnetic field by measuring a first value for characteristics of a magnetic field at a first position in the magnetic field. The system measures a second value characteristics of the magnetic field at a second position in the magnetic field. The system determines a distance between the first position and the second position. The system estimates a distortion component of the magnetic field at approximately the second position in the magnetic field based on each of the distance, the first value for each of the one or more characteristics, and the second value for each of the one or more characteristics. The system outputs a model of at least a region of the magnetic field.
G01R 33/00 - Dispositions ou appareils pour la mesure des grandeurs magnétiques
G01B 7/30 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour mesurer des angles ou des cônesDispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour tester l'alignement des axes
G01R 1/00 - Détails ou dispositions des appareils des types couverts par les groupes ou
H01L 21/00 - Procédés ou appareils spécialement adaptés à la fabrication ou au traitement de dispositifs à semi-conducteurs ou de dispositifs à l'état solide, ou bien de leurs parties constitutives
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
(1) Opti-electrical motion measurement devices in the nature of a camera for the measurement of 3D positions of infrared active or passive markers affixed to an object in order to determine the 3D location of the object for the purpose of determining motion measurement of biological beings, namely, humans, and the 3D measurement of the motion of mechanical entities for scientific research and three-dimensional measurement of objects in general metrology.
(2) Opti-electrical motion measurement devices in the nature of a camera for use in computer-assisted medical therapy, namely, measurement devices for tracking the 3D position and orientation of active and passive markers attached to surgical tools used in image-guided surgery.
An electromagnetic tracking system includes a magnetic transmitter configured to output magnetic fields, a receiver responsive to the magnetic fields, an electronics assembly having conductive elements that cause distortion to the magnetic fields, and an output mechanism configured to output a position of the receiver relative to the magnetic transmitter, wherein the magnetic transmitter has at least one winding disposed around a hollow ferromagnetic core comprised of conductive material through which current is made to flow by the electronics, wherein the electronics assembly is at least partially contained within the hollow portion of the hollow ferromagnetic core. Methods of manufacturing include shaping walls into a hollow shell to surround an electronics assembly, covering the hollow shell with ferromagnetic material, inserting the wrapped hollow shell into a plastic bobbin, and winding the plastic bobbin with coil wire to produce three orthogonal windings.
G01B 7/00 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques
G01B 7/004 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour mesurer les coordonnées de points
G01C 9/00 - Mesure de l'inclinaison, p. ex. par clinomètres, par niveaux
G01D 5/00 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière
G01D 5/12 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques
G01R 33/00 - Dispositions ou appareils pour la mesure des grandeurs magnétiques
G01R 33/02 - Mesure de la direction ou de l'intensité de champs magnétiques ou de flux magnétiques
An electromagnetic tracking system includes a magnetic transmitter configured to output magnetic fields, a receiver responsive to the magnetic fields, an electronics assembly having conductive elements that cause distortion to the magnetic fields, and an output mechanism configured to output a position of the receiver relative to the magnetic transmitter, wherein the magnetic transmitter has at least one winding disposed around a hollow ferromagnetic core comprised of conductive material through which current is made to flow by the electronics, wherein the electronics assembly is at least partially contained within the hollow portion of the hollow ferromagnetic core. Methods of manufacturing include shaping walls into a hollow shell to surround an electronics assembly, covering the hollow shell with ferromagnetic material, inserting the wrapped hollow shell into a plastic bobbin, and winding the plastic bobbin with coil wire to produce three orthogonal windings.
H01F 27/32 - Isolation des bobines, des enroulements, ou de leurs éléments
H01F 41/061 - Enroulement de feuilles ou de fils conducteurs plats
G01R 33/02 - Mesure de la direction ou de l'intensité de champs magnétiques ou de flux magnétiques
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
A61B 90/00 - Instruments, outillage ou accessoires spécialement adaptés à la chirurgie ou au diagnostic non couverts par l'un des groupes , p. ex. pour le traitement de la luxation ou pour la protection de bords de blessures
A61B 90/50 - Supports pour instruments chirurgicaux, p. ex. bras articulés
An electromagnetic tracking (EMT) system includes a tracked device, a tracking device, and a computing device. The EMT system is configured to receive, at the tracking device, an electromagnetic signal generated by the tracked device, determine, based on the electromagnetic signal, a set of possible positions and orientations of the tracked device relative to the tracking device, receive a measured inertial value representing a motion of the tracked device, determine an estimated inertial value corresponding to the motion of the tracked device based on at least one position and orientation of the set of possible positions and orientations, determine a difference value representing a difference between the estimated inertial value and the measured inertial value, determine a particular position and a particular orientation from the set in response to determining the difference value, and generate an output including the particular position and particular orientation.
G01N 21/00 - Recherche ou analyse des matériaux par l'utilisation de moyens optiques, c.-à-d. en utilisant des ondes submillimétriques, de la lumière infrarouge, visible ou ultraviolette
G01S 1/70 - Radiophares ou systèmes de balisage émettant des signaux ayant une ou des caractéristiques pouvant être détectées par des récepteurs non directionnels et définissant des directions, situations ou lignes de position déterminées par rapport aux émetteurs de radiophareRécepteurs travaillant avec ces systèmes utilisant des ondes électromagnétiques autres que les ondes radio
A61B 5/06 - Dispositifs autres que ceux à radiation, pour détecter ou localiser les corps étrangers
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
59.
Compensating for distortion in an electromagnetic tracking system
A system comprising: a magnetic transmitter configured to generate magnetic fields; a magnetic sensor configured to generate signals based on characteristics of the magnetic fields received at the magnetic sensor; and one or more computer systems configured to: receive the signals from the magnetic sensor; determine, based on the signals received from the magnetic sensor, an electromagnetic (EM) pose of the magnetic sensor relative to the magnetic transmitter; determine one or both of: i) an inertial pose of the magnetic sensor relative to the magnetic transmitter based on inertial data associated with the magnetic transmitter and the magnetic sensor, or ii) an optical pose of the magnetic sensor relative to the magnetic transmitter based on optical data associated with the magnetic transmitter and the magnetic sensor; determine an estimated pose of the magnetic sensor relative to the magnetic transmitter based on the EM pose and the one or both of the inertial pose or the optical pose; determine distorted magnetic fields based on the EM pose; determine estimated clean magnetic fields based on the estimated pose; determine estimated distorted magnetic fields based on the distorted magnetic fields and the estimated clean fields; and determine an improved EM pose of the magnetic sensor relative to the magnetic transmitter based on the estimated distorted magnetic fields.
A calibration device comprising: a plurality of magnetic sensors positioned at the calibration device, the plurality of magnetic sensors defining a space; a controller configured to be positioned in the space defined by the plurality of magnetic sensors, wherein the controller includes a magnetic transmitter; and one or more processors configured to: cause the magnetic transmitter to generate magnetic fields; receive signals from the plurality of magnetic sensors that are based on characteristics of the magnetic fields received at the plurality of magnetic sensors; calculate, based on the signals received from the plurality of magnetic sensors, positions and orientations of the plurality of magnetic sensors relative to a position and orientation of the magnetic transmitter; and determine whether the calculated positions and orientations of the plurality of magnetic sensors are within one or more threshold limits of known positions and orientations of the plurality of magnetic sensors.
G01R 33/00 - Dispositions ou appareils pour la mesure des grandeurs magnétiques
G01B 7/004 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour mesurer les coordonnées de points
G01C 17/38 - Test, étalonnage ou compensation des compas
G06F 3/01 - Dispositions d'entrée ou dispositions d'entrée et de sortie combinées pour l'interaction entre l'utilisateur et le calculateur
G06F 3/0346 - Dispositifs de pointage déplacés ou positionnés par l'utilisateurLeurs accessoires avec détection de l’orientation ou du mouvement libre du dispositif dans un espace en trois dimensions [3D], p. ex. souris 3D, dispositifs de pointage à six degrés de liberté [6-DOF] utilisant des capteurs gyroscopiques, accéléromètres ou d’inclinaison
A calibration system comprising: a Helmholtz device comprising thee pairs of coils defining an inner volume, wherein each of the three pairs of coils is configured to generate a magnetic field that is uniform throughout the inner volume; a mount configured to accept a device that includes a magnetic sensor, wherein at least a portion of the mount is positioned within the inner volume such that the magnetic sensor is positioned at or near a center of the inner volume when the device is positioned on the mount; and a computer system configured to communicate with the Helmholtz device and the magnetic sensor, wherein the computer system is configured to: provide instructions to cause each of the three pairs of coils to generate a magnetic field; receive signals from the magnetic sensor that are based on characteristics of the magnetic fields received at the magnetic sensor; measure, based on the signals received from the magnetic sensor, one or more characteristics of the magnetic sensor; and determine, using a calibration algorithm, one or more calibration correction factors for the magnetic sensor based on the one or more characteristics of the magnetic sensor and the provided instructions.
G01R 33/00 - Dispositions ou appareils pour la mesure des grandeurs magnétiques
G01B 7/004 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour mesurer les coordonnées de points
G06F 3/01 - Dispositions d'entrée ou dispositions d'entrée et de sortie combinées pour l'interaction entre l'utilisateur et le calculateur
G01C 17/38 - Test, étalonnage ou compensation des compas
G06F 3/0346 - Dispositifs de pointage déplacés ou positionnés par l'utilisateurLeurs accessoires avec détection de l’orientation ou du mouvement libre du dispositif dans un espace en trois dimensions [3D], p. ex. souris 3D, dispositifs de pointage à six degrés de liberté [6-DOF] utilisant des capteurs gyroscopiques, accéléromètres ou d’inclinaison
A system comprising: a sensor configured to be introduced into a clearance hole of a surgical implant, wherein the sensor is configured to be introduced in proximity to a generated magnetic field and cause distortion of the magnetic field; and one or more field measuring coils configured to: measure a characteristic of the magnetic field when the sensor is in proximity to the magnetic field; and provide, to a computing device, a signal representative of the measured characteristic of the magnetic field, wherein the computing device is configured to determine one or both of a position and an orientation of the sensor and the clearance hole based on the measured characteristic of the magnetic field.
A61B 17/17 - Dispositifs de guidage pour les forets
A61B 17/72 - Dispositifs intramédullaires, p. ex. broches ou clous
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
G01D 5/20 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques influençant la valeur d'un courant ou d'une tension en faisant varier l'inductance, p. ex. une armature mobile
A61B 90/00 - Instruments, outillage ou accessoires spécialement adaptés à la chirurgie ou au diagnostic non couverts par l'un des groupes , p. ex. pour le traitement de la luxation ou pour la protection de bords de blessures
A61B 17/00 - Instruments, dispositifs ou procédés chirurgicaux
A system comprising: one or more field generating coils configured to generate a magnetic field; a sensor comprising a shell that contains a ferrofluid, the sensor configured to be introduced in proximity to the magnetic field, wherein the ferrofluid causes distortion of the magnetic field when the ferrofluid is in proximity to the magnetic field; and one or more field measuring coils configured to: measure a characteristic of the magnetic field when the ferrofluid is in proximity to the magnetic field; and provide, to a computing device, a signal representative of the measured characteristic of the magnetic field, wherein the computing device is configured to determine one or both of a position and an orientation of the sensor based on the measured characteristic of the magnetic field.
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
A61B 90/00 - Instruments, outillage ou accessoires spécialement adaptés à la chirurgie ou au diagnostic non couverts par l'un des groupes , p. ex. pour le traitement de la luxation ou pour la protection de bords de blessures
A61B 5/06 - Dispositifs autres que ceux à radiation, pour détecter ou localiser les corps étrangers
G01D 5/20 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques influençant la valeur d'un courant ou d'une tension en faisant varier l'inductance, p. ex. une armature mobile
A system comprising: a transmitter that includes at least three coils, the transmitter configured to generate magnetic fields; a sensor that includes at least three coils, the sensor configured to provide sensor signals that correspond to the magnetic fields generated by the transmitter; and a computing device in communication with the transmitter and the sensor, the computing device configured to compare a first sensor signal and a second sensor signal, and based on the comparison, determine whether any of the sensor coils are locked to a corresponding frequency out-of-phase.
G01V 3/38 - Traitement de données, p. ex. pour l'analyse, pour l'interprétation ou pour la correction
G01V 3/10 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation fonctionnant au moyen de champs magnétiques ou électriques produits ou modifiés par les objets ou les structures géologiques, ou par les dispositifs de détection en utilisant des cadres inducteurs
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
A61B 5/06 - Dispositifs autres que ceux à radiation, pour détecter ou localiser les corps étrangers
A61B 5/00 - Mesure servant à établir un diagnostic Identification des individus
65.
Opto-electrical networks for controlling downhole electronic devices
Systems and methods are provided for using opto-electrical networks to control downhole electronic devices. A system is provided that can include an optical transmitter. The optical transmitter can generate a first electrical signal associated with a radio frequency or a frequency bandwidth of the radio frequency. The optical transmitter can also convert the first electrical signal to an optical signal. The optical transmitter can further transmit the optical signal over a fiber-optic cable to an optical receiver deployed in a wellbore. The system can include the optical receiver. The optical receiver can convert the optical signal to a second electrical signal associated with the radio frequency or the frequency bandwidth. The optical receiver can also control an electronic device in the wellbore that is identified from the radio frequency or the frequency bandwidth of the second electrical signal.
E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
E21B 47/00 - Relevés dans les trous de forage ou dans les puits
E21B 49/00 - Test pour déterminer la nature des parois des trous de forageEssais de couchesProcédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Scientific, optical and measuring apparatus and instruments not related to eyewear products, spectacles trade or optician's services; sensors for determining the position, dimensions, orientation and motion of objects, body parts and humans, not for medical use; devices for measuring and showing the position, dimensions, orientation and motion of objects, body parts and humans, not for medical use; devices for tracking and showing the position, dimensions, motion, and orientation of objects, body parts and humans, not for medical use; opti-electrical motion measurement device; opti-electrical motion measurement device for the measurement of 3D positions of infrared active or passive markers affixed to an object in order to determine the 3D location of the object for the purpose of determining motion measurement of biological beings, namely humans, and the 3D measurement of the motion of mechanical entities for scientific research and three-dimensional measurement of objects in general metrology; parts and spare parts of the aforementioned apparatus, instruments and devices; software for operating and controlling the aforementioned goods; software for operating and controlling surgical, medical, dental and veterinary apparatus and instruments. Surgical, medical, dental and veterinary apparatus and instruments not related to eyewear products, spectacles trade or optician's services; sensors for determining the position, dimensions, orientation and motion of objects, body parts and humans for medical use; devices for measuring and showing the position, dimensions, orientation and motion of objects, body parts and humans for medical use; devices for tracking and showing the position, dimensions, orientation and motion of objects, body parts and humans for medical use; opti-electrical motion measurement device for use in computer assisted therapy; opti-electrical motion measurement device for medical purposes, namely, for use in computer assisted medical therapy; patient positioning devices; parts and spare parts of the aforementioned goods.
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Scientific, optical and measuring apparatus and instruments not related to eyewear products, spectacles trade or optician’s services; sensors for determining the position, dimensions, orientation and motion of objects, body parts and humans, not for medical use; devices for measuring and showing the position, dimensions, orientation and motion of objects, body parts and humans, not for medical use; devices for tracking and showing the position, dimensions, motion, and orientation of objects, body parts and humans, not for medical use; opti-electrical motion measurement device; opti-electrical motion measurement device for the measurement of 3D positions of infrared active or passive markers affixed to an object in order to determine the 3D location of the object for the purpose of determining motion measurement of biological beings, namely humans, and the 3D measurement of the motion of mechanical entities for scientific research and three-dimensional measurement of objects in general metrology; parts and spare parts of the aforementioned apparatus, instruments and devices; software for operating and controlling the aforementioned goods; software for operating and controlling surgical, medical, dental and veterinary apparatus and instruments. Surgical, medical, dental and veterinary apparatus and instruments not related to eyewear products, spectacles trade or optician’s services; sensors for determining the position, dimensions, orientation and motion of objects, body parts and humans for medical use; devices for measuring and showing the position, dimensions, orientation and motion of objects, body parts and humans for medical use; devices for tracking and showing the position, dimensions, orientation and motion of objects, body parts and humans for medical use; opti-electrical motion measurement device for use in computer assisted therapy; opti-electrical motion measurement device for medical purposes, namely, for use in computer assisted medical therapy; patient positioning devices; parts and spare parts of the aforementioned goods.
An improved system for magnetic position tracking of a device includes a magnetic transmitter, a magnetic sensor, a computing system and a polarity inverter. The magnetic transmitter includes at least one transmitter coil that outputs a transmitted magnetic field having a time derivative component. The magnetic sensor includes at least one sensor coil that has coil terminals having a polarity, and the sensor coil is responsive to the time derivative component of the transmitted magnetic field and outputs a sensor signal. The computing system computes position and angular orientation data of a device based on the sensor signal and the polarity inverter is configured to connect to the coil terminals and to cause the polarity of the coil terminals to be reversed according to a switching signal.
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
A61B 5/06 - Dispositifs autres que ceux à radiation, pour détecter ou localiser les corps étrangers
G01B 7/00 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques
A61B 8/00 - Diagnostic utilisant des ondes ultrasonores, sonores ou infrasonores
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
(1) Opti-electrical motion measurement device for the measurement of 3D positions of infrared active or passive markers affixed to an object in order to determine the 3D location of the object for the purpose of determining motion measurement of biological beings, namely, humans, and the 3D measurement of the motion of mechanical entities for scientific research and three-dimensional measurement of objects in general metrology, all aforementioned goods without sensors for industrial process control systems, in particular without filling level sensors, point level sensors, pressure sensors, density sensors and flow sensors; Opti-electrical motion measurement device for use in computer assisted medical therapy, namely, measurement devices for tracking the 3D position and orientation of active and passive markers attached to surgical tools used in image-guided surgery
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Scientific optical measuring instruments and sensors for determining the position, dimensions, orientation and motion of human body parts and humans, not for medical use; devices for measuring and showing the position, dimensions, orientation and motion of human body parts and humans, not for medical use; devices for tracking and showing the position, dimensions, motion, and orientation of human body parts and humans, not for medical use; opti-electrical motion measurement device for the measurement of 3D positions of infrared active or passive markers affixed to an object in order to determine the 3D location of the object for the purpose of determining motion measurement of biological beings, namely humans, and the 3D measurement of the motion of mechanical entities for scientific research and three-dimensional measurement of objects in general metrology, all aforementioned goods without sensors for industrial process control systems, in particular without filling level sensors, point level sensors, pressure sensors, density sensors and flow sensors; parts and spare parts of the aforementioned apparatus, instruments and devices; software for operating and controlling the aforementioned goods; software for operating and controlling surgical, medical, dental and veterinary apparatus and instruments. Surgical, medical, dental and veterinary apparatus and instruments; sensors for determining the position, dimensions, orientation and motion of objects, body parts and humans for medical use; devices for measuring and showing the position, dimensions, orientation and motion of objects, body parts and humans for medical use; devices for tracking and showing the position, dimensions, orientation and motion of objects, body parts and humans for medical use; opti-electrical motion measurement device for use in computer assisted therapy; patient positioning devices; parts and spare parts of the aforementioned goods.
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Opti-electrical motion measurement device for the measurement of 3D positions of infrared active or passive markers affixed to an object in order to determine the 3D location of the object for the purpose of determining motion measurement of biological beings, namely, humans, and the 3D measurement of the motion of mechanical entities for scientific research and three-dimensional measurement of objects in general metrology; all aforementioned goods without sensors for industrial process control systems, in particular without filling level sensors, point level sensors, pressure sensors, density sensors and flow sensors Opti-electrical motion measurement device for use in computer assisted medical therapy, namely, measurement devices for tracking the 3D position and orientation of active and passive markers attached to surgical tools used in image-guided surgery including brain surgery, ear, nose and throat (ENT) surgery, orthopedic surgery and in various forms of cancer therapy
Among other things, the disclosure features a system comprising a sensor, a DC magnetic field source, an AC magnetic field source, and a receiver. The sensor has an aspect ratio of 10:1 or higher and comprises a ferromagnetic material. The ferromagnetic material has a non-linear magnetization response, and the response contains a maximum point of non-linearity. The DC magnetic field source is adjustable for providing a magnetic excitation field to excite a magnetic field within the sensor. The provided magnetic excitation field has a range such that the excited magnetic field within the sensor is near the maximum point of non-linearity. The AC magnetic field source is configured to generate an AC magnetic field to cause the sensor to generate even harmonics. The receiver is configured to receive the even harmonics from the sensor for determining a position of the sensor.
G01B 7/00 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques
G01D 5/20 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques influençant la valeur d'un courant ou d'une tension en faisant varier l'inductance, p. ex. une armature mobile
A magnetic field sensor assembly includes a hollow cylindrical core, conductive material and at least first and second lead wires. The hollow cylindrical core is made of ferromagnetic material and has a proximal end and a distal end. The conductive material is disposed around the hollow cylindrical core and forms at least one turn of a coil that has at least one start terminal and at least one finish terminal. The first and second lead wires pass through the center of the hollow cylindrical core and the first lead wire is connected to the start terminal thereby forming a first termination and the second lead wire is connected to the finish terminal thereby forming a second termination. The first and second terminations are positioned within the hollow cylindrical core.
A magnetic field sensor assembly includes a hollow cylindrical core, conductive material and at least first and second lead wires. The hollow cylindrical core is made of ferromagnetic material and has a proximal end and a distal end. The conductive material is disposed around the hollow cylindrical core and forms at least one turn of a coil that has at least one start terminal and at least one finish terminal. The first and second lead wires pass through the center of the hollow cylindrical core and the first lead wire is connected to the start terminal thereby forming a first termination and the second lead wire is connected to the finish terminal thereby forming a second termination. The first and second terminations are positioned within the hollow cylindrical core.
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateursAppareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
A61B 19/00 - Instruments, outillage ou accessoires pour la chirurgie ou le diagnostic non couverts par l'un des groupes A61B 1/00-A61B 18/00, p.ex. pour stéréotaxie, opération aseptique, traitement de la luxation, protecteurs des bords des blessures(masques de protection du visage A41D 13/11; blouses de chirurgien ou vêtements pour malades A41D 13/12; dispositifs pour retirer, traiter ou transporter les liquides du corps A61M 1/00)
An improved system for magnetic position tracking of a device includes a magnetic transmitter, a magnetic sensor, a computing system and a polarity inverter. The magnetic transmitter includes at least one transmitter coil that outputs a transmitted magnetic field having a time derivative component. The magnetic sensor includes at least one sensor coil that has coil terminals having a polarity, and the sensor coil is responsive to the time derivative component of the transmitted magnetic field and outputs a sensor signal. The computing system computes position and angular orientation data of a device based on the sensor signal and the polarity inverter is configured to connect to the coil terminals and to cause the polarity of the coil terminals to be reversed according to a switching signal.
G01B 7/14 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour mesurer la distance ou la marge entre des objets ou des ouvertures espacés
G01R 33/00 - Dispositions ou appareils pour la mesure des grandeurs magnétiques
A61B 5/06 - Dispositifs autres que ceux à radiation, pour détecter ou localiser les corps étrangers
G01B 7/00 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques
A61B 8/00 - Diagnostic utilisant des ondes ultrasonores, sonores ou infrasonores
In one aspect, in general, a method includes receiving, at a computer system, data from an electromagnetic sensor, determining, at the computer system, based on the received data, a location of a tip of a guidewire inserted in a patient, and causing, by the computer system, an indication of the determined location of the tip of the guidewire to be displayed in an overlay image representing at least part of the guidewire.
A61B 5/05 - Détection, mesure ou enregistrement pour établir un diagnostic au moyen de courants électriques ou de champs magnétiquesMesure utilisant des micro-ondes ou des ondes radio
Targeting sensors for use in targeting landmarks of orthopaedic devices. The sensors include a non-cylindrical mounting platform such as a printed circuit board and at least two mounted or printed sensor coils to provide a low profile sensor assembly which can be placed in a predetermined position and orientation on or in an orthopaedic device. The platform has a non-circular cross-section having an aspect ratio of greater than about 1.5:1. The non-circular cross-section of the platform enables the sensor to be placed in a known fixed position within the implant. The sensor coils may be partially or fully embedded in the platform.
A61B 19/00 - Instruments, outillage ou accessoires pour la chirurgie ou le diagnostic non couverts par l'un des groupes A61B 1/00-A61B 18/00, p.ex. pour stéréotaxie, opération aseptique, traitement de la luxation, protecteurs des bords des blessures(masques de protection du visage A41D 13/11; blouses de chirurgien ou vêtements pour malades A41D 13/12; dispositifs pour retirer, traiter ou transporter les liquides du corps A61M 1/00)
In one aspect, in general, a measurement system includes a projector for illuminating a pattern on a surface of the object, at least two imaging devices for obtaining images of a portion of an object, wherein at least some of the images include representations of one or more illuminated reference markers, an instrument for identifying a predetermined feature of the object, and a computing device for determining first position information associated with the illuminated reference markers represented in the images, determining second position information associated with the instrument, and based on the first position information and the second position information, assigning a predetermined coordinate system of the object to the object.
G06K 9/00 - Méthodes ou dispositions pour la lecture ou la reconnaissance de caractères imprimés ou écrits ou pour la reconnaissance de formes, p.ex. d'empreintes digitales
G01B 11/25 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des contours ou des courbes en projetant un motif, p. ex. des franges de moiré, sur l'objet
A magnetic tracking system includes a first set of magnetic field generators configured to produce a first magnetic field having a first shape within a three dimensional region and at least a second set of magnetic field generators configured to produce a second magnetic field having a second shape within the three dimensional region. The system also includes a computing device configured to compute a position of a sensor within the three dimensional region based on the first and second magnetic fields being detected by the sensor.
G01B 7/14 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour mesurer la distance ou la marge entre des objets ou des ouvertures espacés
A61B 5/06 - Dispositifs autres que ceux à radiation, pour détecter ou localiser les corps étrangers
Targeting sensors for use in targeting landmarks of orthopaedic devices. The sensors include a non-cylindrical mounting platform such as a printed circuit board and at least two mounted or printed sensor coils to provide a low profile sensor assembly which can be placed in a predetermined position and orientation on or in an orthopaedic device. The platform has a non-circular cross-section having an aspect ratio of greater than about 1.5:1. The non-circular cross-section of the platform enables the sensor to be placed in a known fixed position within the implant. The sensor coils may be partially or fully embedded in the platform.
A61B 17/56 - Instruments ou procédés chirurgicaux pour le traitement des os ou des articulationsDispositifs spécialement adaptés à cet effet
A61B 5/05 - Détection, mesure ou enregistrement pour établir un diagnostic au moyen de courants électriques ou de champs magnétiquesMesure utilisant des micro-ondes ou des ondes radio
A61B 18/18 - Instruments, dispositifs ou procédés chirurgicaux pour transférer des formes non mécaniques d'énergie vers le corps ou à partir de celui-ci par application de radiations électromagnétiques, p. ex. de micro-ondes
A61B 19/00 - Instruments, outillage ou accessoires pour la chirurgie ou le diagnostic non couverts par l'un des groupes A61B 1/00-A61B 18/00, p.ex. pour stéréotaxie, opération aseptique, traitement de la luxation, protecteurs des bords des blessures(masques de protection du visage A41D 13/11; blouses de chirurgien ou vêtements pour malades A41D 13/12; dispositifs pour retirer, traiter ou transporter les liquides du corps A61M 1/00)
81.
DC magnetic-based position and orientation monitoring system for tracking medical instruments
Miniaturized, five and six degrees-of-freedom magnetic sensors, responsive to pulsed DC magnetic fields waveforms generated by multiple transmitter options, provide an improved and cost-effective means of guiding medical instruments to targets inside the human body. The end result is achieved by integrating DC tracking, 3D reconstructions of pre-acquired patient scans and imaging software into a system enabling a physician to internally guide an instrument with real-time 3D vision for diagnostic and interventional purposes. The integration allows physicians to navigate within the human body by following 3D sensor tip locations superimposed on anatomical images reconstructed into 3D volumetric computer models. Sensor data can also be integrated with real-time imaging modalities, such as endoscopes, for intrabody navigation of instruments with instantaneous feedback through critical anatomy to locate and remove tissue. To meet stringent medical requirements, the system generates and senses pulsed DC magnetic fields embodied in an assemblage of miniaturized, disposable and reposable sensors functional with both dipole and co-planar transmitters.
A field generator for use in a surgical targeting system is disclosed. The field generator includes a mounting structure including elements that are configured to receive components of an electromagnetic field generator. The elements are disposed on the mounting structure at locations and orientations relative to each other. The field generator includes at least one covering formed over the mounting structure, wherein, in use, the locations and orientations of the elements relative to each other remain substantially unaltered after exposure to one or more sterilization processes.
A61B 17/00 - Instruments, dispositifs ou procédés chirurgicaux
A61B 5/05 - Détection, mesure ou enregistrement pour établir un diagnostic au moyen de courants électriques ou de champs magnétiquesMesure utilisant des micro-ondes ou des ondes radio
A61B 5/06 - Dispositifs autres que ceux à radiation, pour détecter ou localiser les corps étrangers
A61B 5/11 - Mesure du mouvement du corps entier ou de parties de celui-ci, p. ex. tremblement de la tête ou des mains ou mobilité d'un membre
A61B 5/00 - Mesure servant à établir un diagnostic Identification des individus
A61B 17/17 - Dispositifs de guidage pour les forets
A61B 19/00 - Instruments, outillage ou accessoires pour la chirurgie ou le diagnostic non couverts par l'un des groupes A61B 1/00-A61B 18/00, p.ex. pour stéréotaxie, opération aseptique, traitement de la luxation, protecteurs des bords des blessures(masques de protection du visage A41D 13/11; blouses de chirurgien ou vêtements pour malades A41D 13/12; dispositifs pour retirer, traiter ou transporter les liquides du corps A61M 1/00)
83.
SYNERGISTIC ELECTROMAGNETIC TRACKING WITH TMS SYSTEMS
A system for tracking the location of a magnetic stimulation coil in a first embodiment, the system comprising a magnetic stimulation single coil system operative to provide a health benefit, and a plurality of sensing devices, fixed in a known location, operative to detect the magnetic field from said magnetic stimulation single coil system, and a processing means for assembling the detected magnetic field data into location parameters of the stimulation coil with respect to the sensing devices
A61N 2/02 - Magnétothérapie utilisant des champs magnétiques produits par des bobines, y compris par des boucles à spire unique ou par des électro-aimants
84.
Systems and methods for compensating for large moving objects in magnetic-tracking environments
Methods for accurately tracking position and orientation of a magnetic-field sensor in a tracking volume when a large magnetic-field distorter is present in the tracking volume. In some of the methods, magnetic field data is collected from within the tracking volume both with and without the large magnetic-field distorter present in the tracking volume. This data is used to obtain correction information that is subsequently used during real-time operation of the magnetic-field sensor to correct the position and orientation solutions for the sensor for magnetic-field distortions caused by the presence of the large magnetic-field distorter in the tracking volume. Others of the methods involve modeling the large magnetic-field distorter using dipole and multipole modeling. Magnetic tracking systems for implementing the methods include hardware and software for carrying out the methods.
H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
G01R 33/00 - Dispositions ou appareils pour la mesure des grandeurs magnétiques
G01R 33/02 - Mesure de la direction ou de l'intensité de champs magnétiques ou de flux magnétiques
G01B 7/14 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour mesurer la distance ou la marge entre des objets ou des ouvertures espacés
85.
System and method for improving the distortion tolerance of an electromagnetic tracking system
A system and method for improving the tolerability of metal distorters within the electromagnetic field of an electromagnetic tracking system through the use of transmission frequency optimization techniques and/or solution subset measurements.
Methods for accurately tracking position and orientation of a magnetic-field sensor in a tracking volume when a large magnetic-field distorter is present in the tracking volume. In some of the methods, magnetic field data is collected from within the tracking volume both with and without the large magnetic-field distorter present in the tracking volume. This data is used to obtain correction information that is subsequently used during real-time operation of the magnetic-field sensor to correct the position and orientation solutions for the sensor for magnetic-field distortions caused by the presence of the large magnetic-field distorter in the tracking volume. Others of the methods involve modeling the large magnetic-field distorter using dipole and multipole modeling. Magnetic tracking systems for implementing the methods include hardware and software for carrying out the methods.
A61B 5/05 - Détection, mesure ou enregistrement pour établir un diagnostic au moyen de courants électriques ou de champs magnétiquesMesure utilisant des micro-ondes ou des ondes radio
87.
System and method for detecting errors in position tracking systems used for medical applications
A system and method for identifying errors while tracking instrument navigations is enclosed. The method may include assigning a plurality of virtual points to a plurality of sensors. At least one of the virtual points may be a non-fixed virtual point. The assignment of virtual points to sensors may be determined based on the medical instrument, or the medical instrument attachment, being used. Virtual point locations may be determined for the non-fixed virtual point. The locations of the non-fixed virtual point may be determined based on the medical instrument, or the medical instrument attachment, being used. The vector values for vectors terminating at the non-fixed virtual point may be adjusted. The field integrity values for the virtual points may be computed. If a field integrity value is greater than a threshold value, an error signal may be communicated.
An electromagnetic tracking system (600) and a distortion compensation method (500) that utilize a lead-lag network model to compensate for position and orientation distortion caused by eddy currents formed in one or more conductive distorters (330, 658A-C) located within a tracking environment during electromagnetic tracking of one or more objects (612). the method is adaptive relative to the amount of distortion cause by the conductive distorters.
A61B 5/05 - Détection, mesure ou enregistrement pour établir un diagnostic au moyen de courants électriques ou de champs magnétiquesMesure utilisant des micro-ondes ou des ondes radio
A system includes a tracking subsystem and a mapping subsystem. A portion of the mapping subsystem can be fixed in position relative to a portion of the tracking subsystem. The system also includes a processing subsystem in data communication with the tracking subsystem and the mapping subsystem. Other systems, methods, and articles are also described.
G01B 21/20 - Dispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour mesurer des contours ou des courbes, p. ex. pour déterminer un profil
G01B 11/245 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des contours ou des courbes en utilisant plusieurs transducteurs fixes fonctionnant simultanément
G01B 11/25 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des contours ou des courbes en projetant un motif, p. ex. des franges de moiré, sur l'objet
G01S 13/66 - Systèmes radar de poursuiteSystèmes analogues
G01S 17/66 - Systèmes de poursuite utilisant d'autres ondes électromagnétiques que les ondes radio
A61B 19/00 - Instruments, outillage ou accessoires pour la chirurgie ou le diagnostic non couverts par l'un des groupes A61B 1/00-A61B 18/00, p.ex. pour stéréotaxie, opération aseptique, traitement de la luxation, protecteurs des bords des blessures(masques de protection du visage A41D 13/11; blouses de chirurgien ou vêtements pour malades A41D 13/12; dispositifs pour retirer, traiter ou transporter les liquides du corps A61M 1/00)
In one aspect of the present technique, an array of electromagnetic sensors is positioned within a volume of interest. In the presence of an electromagnetic field, the array of electromagnetic sensors is sampled to acquire signals representative of the location of the electromagnetic sensors in the array. The electromagnetic field distortion within the volume of interest is determined based on the acquired signals. In another aspect of the present technique, a system for detecting electromagnetic field distortions includes an electromagnetic sensor assembly for positioning within a volume of interest, a plurality of electromagnetic sensors for transmitting or receiving signals representative of the location of the electromagnetic sensors on the sensor assembly; and a tracker. In another aspect of the present technique, an electromagnetic sensor assembly for detecting electromagnetic field distortion includes a body, and an array of electromagnetic sensors positioned on the body.
G01B 7/14 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour mesurer la distance ou la marge entre des objets ou des ouvertures espacés
G01B 7/30 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour mesurer des angles ou des cônesDispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour tester l'alignement des axes
91.
LEAD TRACKING OF IMPLANTABLE CARDIOVERTER-DEFIBRILLATOR (ICD) AND CARDIAC RESYNCHRONIZATION THERAPY (CRT) DEVICES
Lead Tracking of Implantable Cardioverter-Defibrillator and Cardiac Resy꧀chronization Therapy Devices improve upon the process of implantation of ICD-CRT devices, placing their leads, and improving the information fed back to the device and/or clinician. Tracking of the placement of the leads during implantation is accomplished along with monitoring the leads. Benefits include reducing the risk and complication rate, simplifying implantation procedure, and enabling the extraction of vital data not previously available. Three dimensional tracking is employed to facilitate obtaining data that allows the surgeon to better visualize lead insertion and placement. Placement of the leads during a procedure requires use of an external tracking component along with means for tracking the leads. Transmitting antennas are provided, equal in number to the number of degrees of freedom of tracking required. Once leads are implanted, heart wall motion must be monitored via the tracking of the leads within a clinical or home environment.
A marker-tracking system includes an object, a marker illuminating device, a marker sensing device, and a computing device. The object includes a first retroreflective marker having a shape that is substantially defined by two spherical caps of different radii that are disposed substantially concentric in relation to one another. The marker illuminating device substantially illuminates the first retroreflective marker, the marker sensing device detects the illuminated first retroreflective marker and generates first data indicative of the location of the illuminated first retroreflective marker in space, and the computing device processes the first data generated by the marker sensing device to determine a position and/or orientation of the object in space.
G01S 17/06 - Systèmes déterminant les données relatives à la position d'une cible
A61B 19/00 - Instruments, outillage ou accessoires pour la chirurgie ou le diagnostic non couverts par l'un des groupes A61B 1/00-A61B 18/00, p.ex. pour stéréotaxie, opération aseptique, traitement de la luxation, protecteurs des bords des blessures(masques de protection du visage A41D 13/11; blouses de chirurgien ou vêtements pour malades A41D 13/12; dispositifs pour retirer, traiter ou transporter les liquides du corps A61M 1/00)
93.
DC MAGNETIC-BASED POSITION AND ORIENTATION MONITORING SYSTEM FOR TRACKING MEDICAL INSTRUMENTS
Miniaturized, five and six degrees-of-freedom magnetic sensors (1-7), responsive to pulsed DC magnetic fields waveforms generated by multiple transmitter options (15-18), provide an improved and cost-effective means of guiding medical instruments to targets inside the human body. The end result is achieved by integrating DC tracking, 3D reconstructions of pre-acquired patient scans and imaging software into a system enabling a physician to internally guide an instrument with real-time 3D vision for diagnostic and interventional purposes. The integration allows physicians to navigate within the human body by following 3D sensor tip locations superimposed on anatomical images reconstructed into 3D volumetric computer models. Sensor data can also be integrated with real-time imaging modalities, such as endoscopes, for intrabody navigation of instruments with instantaneous feedback through critical anatomy to locate and remove tissue. To meet stringent medical requirements, the system generates and senses pulsed DC magnetic fields embodied in an assemblage of miniaturized, disposable and reposable sensors functional with both dipole and co-planar transmitters.
A61B 5/05 - Détection, mesure ou enregistrement pour établir un diagnostic au moyen de courants électriques ou de champs magnétiquesMesure utilisant des micro-ondes ou des ondes radio
94.
DC magnetic-based position and orientation monitoring system for tracking medical instruments
Miniaturized, five and six degrees-of-freedom magnetic sensors, responsive to pulsed DC magnetic fields waveforms generated by multiple transmitter options, provide an improved and cost-effective means of guiding medical instruments to targets inside the human body. The end result is achieved by integrating DC tracking, 3D reconstructions of pre-acquired patient scans and imaging software into a system enabling a physician to internally guide an instrument with real-time 3D vision for diagnostic and interventional purposes. The integration allows physicians to navigate within the human body by following 3D sensor tip locations superimposed on anatomical images reconstructed into 3D volumetric computer models. Sensor data can also be integrated with real-time imaging modalities, such as endoscopes, for intrabody navigation of instruments with instantaneous feedback through critical anatomy to locate and remove tissue. To meet stringent medical requirements, the system generates and senses pulsed DC magnetic fields embodied in an assemblage of miniaturized, disposable and reposable sensors functional with both dipole and co-planar transmitters.
A61B 5/05 - Détection, mesure ou enregistrement pour établir un diagnostic au moyen de courants électriques ou de champs magnétiquesMesure utilisant des micro-ondes ou des ondes radio
Described herein are one or more implementations for an electromagnetic (EM) position and orientation tracking system operating at an ultra-low frequency, which reduces the strength of eddy currents produced by nearby field-distorting electrically-conductive materials (“distorters”). This effectively reduces the overall distorting effect of distorters.
09 - Appareils et instruments scientifiques et électriques
Produits et services
Three dimensional motion measurement, position sensing, and optical tracking systems, including position sensors, system controllers, markers, strobe signal interfaces, computer hardware and software, digitizing probes, scales and other reference tools.
98.
Method and system for field mapping using integral methodology
Certain embodiments of the present invention provide a system and method for improved distortion measurement and compensation. Certain embodiments include selecting a set of sources on a surface of a volume, determining mutual inductances from the set of sources on the surface, and calculating distortion from the volume using the mutual inductances from the set of sources on the surface. In an embodiment, distortion is calculated using an integral method and/or a finite element analysis. The volume may be modeled as a simplified construct, such as a ring model, a coil array with straight line segments model, a polygon model, and/or dipole array model. The model may be adjusted based on the distortion calculated from the volume. Magnetic fields may also be used to calculate distortion. In an embodiment, an object may be tracked using a distortion mapping.
A61B 5/05 - Détection, mesure ou enregistrement pour établir un diagnostic au moyen de courants électriques ou de champs magnétiquesMesure utilisant des micro-ondes ou des ondes radio
G01S 1/02 - Radiophares ou systèmes de balisage émettant des signaux ayant une ou des caractéristiques pouvant être détectées par des récepteurs non directionnels et définissant des directions, situations ou lignes de position déterminées par rapport aux émetteurs de radiophareRécepteurs travaillant avec ces systèmes utilisant les ondes radioélectriques
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
(1) Optical-electrical measurement device that measures the 3D positions of either active or passive markers for use in medical and scientific research, metrology, computer assisted medical and surgical therapies, and medical and surgical applications; optical-electrical measurement system that measures the 3D positions of either active or passive markers, to calculate or measure the position of a tool for use in medical and scientific research, metrology applications.
(2) Optical-electrical measurement system that measures the 3D positions of either active or passive markers, to calculate or measure the position of a tool for use in computer assisted medical and surgical therapies, and medical and surgical applications.
