G01N 29/14 - Recherche ou analyse des matériaux par l'emploi d'ondes ultrasonores, sonores ou infrasonoresVisualisation de l'intérieur d'objets par transmission d'ondes ultrasonores ou sonores à travers l'objet utilisant des techniques d'émission acoustique
C02F 1/20 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par dégazage, c.-à-d. par libération des gaz dissous
G01H 17/00 - Mesure des vibrations mécaniques ou des ondes ultrasonores, sonores ou infrasonores non prévue dans les autres groupes de la présente sous-classe
2.
GAS BUBBLE REDUCTION ON SURFACES AND IN BULK FLUIDS USING ULTRASOUND
A non-invasive apparatus and method for detaching and removing gas bubbles from surfaces, such as electrodes, and from bulk liquids using acoustic radiation force, are described. The application of acoustic waves to bubble removal from electrolyzers and gas-liquid separator vessels enhances hydrogen production efficiency. Hydrogen bubbles are smaller in size and will be more responsive to higher frequencies, whereas oxygen bubbles are relatively larger in size and will be more responsive to a relatively lower frequency. For each of the electrodes, the bubble diameters also change along the height of the electrolyzer cell; therefore, a range of frequencies is advantageous. To produce multiple frequencies in the fluid mixture, the same transducer was simultaneously excited at two distinct frequencies, f1 and f2 simultaneously, leveraging the highly non-linear characteristics of bubbly fluids to facilitate frequency mixing, resulting in the emergence of frequencies such as mf1±nf2 within the fluid medium (m and n are integer numbers).
Fresenius Medical Care Deutschland GmbH (Allemagne)
Fresenius Medical Care Holdings, Inc. (USA)
Inventeur(s)
Sinha, Dipen N.
Schaefer, Robert
Osterhoudt, Curtis
Espina, Peter G.
Crnkovich, Martin J.
Wang, Fei
Bowman, Steve M.
Urban, Martin
Abrégé
This disclosure teaches a system and method for monitoring an extracorporeal blood circuit of a patient and identifying a needle dislodgement. The method includes identifying a potential needle dislodgement event based on changes in pressure of the extracorporeal blood circuit, searching for a heart rate of a patient by analyzing an optical backscatter signal from an optical sensor attached to the extracorporeal blood circuit or by analyzing a pressure signal representative of the pressure in the extracorporeal blood circuit, and verifying the potential needle dislodgement event is a needle dislodgement based on the absence of the heart rate.
In one aspect, a method and system for detecting a change in fluid dynamics of a fluid flowing through an extra-corporeal circuit is disclosed, which includes establishing an acoustic wave resonance across a transverse dimension of at least a portion of a line associated with the extra-corporeal circuit through which the fluid flows, monitoring a phase signal of the resonant acoustic wave, and identifying occurrence of a change in fluid dynamics of the flowing fluid when the observed phase signal of the resonant acoustic wave indicates a deviation from the expected fluid flow signature. The change in fluid dynamics can be used to indicate a venous needle dislodgement event.
Fresenius Medical Care Deutschland GmbH (Allemagne)
Fresenius Medical Care Holdings, Inc. (USA)
Inventeur(s)
Sinha, Dipen N.
Schaefer, Robert
Osterhoudt, Curtis
Espina, Peter G.
Crnkovich, Martin J.
Wang, Fei
Bowman, Steve M.
Urban, Martin
Abrégé
This disclosure teaches a system and method for monitoring an extracorporeal blood circuit of a patient and identifying a needle dislodgement. The method includes identifying a potential needle dislodgement event based on changes in pressure of the extracorporeal blood circuit, searching for a heart rate of a patient by analyzing an optical backscatter signal from an optical sensor attached to the extracorporeal blood circuit or by analyzing a pressure signal representative of the pressure in the extracorporeal blood circuit, and verifying the potential needle dislodgement event is a needle dislodgement based on the absence of the heart rate.
FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH (Allemagne)
Inventeur(s)
Sinha, Dipen N.
Schaefer, Robert
Osterhoudt, Curtis
Espina, Peter G.
Crnkovich, Martin J.
Wang, Fei
Bowman, Steve M.
Urban, Martin
Abrégé
This disclosure teaches a system and method for monitoring an extracorporeal blood circuit of a patient and identifying a needle dislodgement. The method includes identifying a potential needle dislodgement event based on changes in pressure of the extracorporeal blood circuit, searching for a heart rate of a patient by analyzing an optical backscatter signal from an optical sensor attached to the extracorporeal blood circuit or by analyzing a pressure signal representative of the pressure in the extracorporeal blood circuit, and verifying the potential needle dislodgement event is a needle dislodgement based on the absence of the heart rate.
An acoustic apparatus and method for using a combination of low-frequency and high-frequency vibration of dried food, grain being an example, such that there are a large number of collisions among the individual grain particles for destroying microorganisms that reside on the surface or just below the surface of the grain, are described. Embodiments of the invention permit bulk and continuous processing of the food. It is expected that such collisions do not produce any chemical changes in the food, nor should it have any adverse effects on the taste thereof. Embodiments of the apparatus are applicable to destruction of airborne microorganisms.
A23B 9/00 - Conservation des graines comestibles, p. ex. des céréales
A23B 9/06 - Conservation par irradiation ou traitement électrique sans effet de chauffage
A23L 3/00 - Conservation des aliments ou produits alimentaires, en général, p.ex. pasteurisation ou stérilisation, spécialement adaptée aux aliments ou produits alimentaires
A23L 3/015 - Conservation des aliments ou produits alimentaires, en général, p.ex. pasteurisation ou stérilisation, spécialement adaptée aux aliments ou produits alimentaires par un traitement utilisant une variation de pression, une secousse, une accélération ou un cisaillement
A23L 3/32 - Conservation des aliments ou produits alimentaires, en général, p.ex. pasteurisation ou stérilisation, spécialement adaptée aux aliments ou produits alimentaires par traitement avec des courants électriques sans effet de chauffage
A61L 9/16 - Désinfection, stérilisation ou désodorisation de l'air utilisant des phénomènes physiques
B65G 15/32 - Courroies ou porte-charges sans fin analogues en caoutchouc ou en matière plastique
Apparatus and method for separating oil from water in produced oil without requiring large separation tanks in which the fluid is heated, using a simple, energy efficient separation process, are described. Centrifugal forces, by themselves, are not effective for completely separating a two-component fluid, especially when the densities of the fluids are similar, such as for heavy oil. By combining both primary and secondary acoustic forces, and taking advantage of centrifugal forces from fluid flow, such that acoustic radiation forces initiate the process of droplet accumulation, and contribute to droplet coalescence, centrifugal separation is enhanced.
B01D 45/12 - Séparation de particules dispersées dans des gaz ou des vapeurs par gravité, inertie ou force centrifuge en utilisant la force centrifuge
B04B 1/18 - Centrifugeurs à tambours rotatifs à parois pleines pour la séparation de mélanges essentiellement liquides contenant ou non des particules solides à orifices d'évacuation dans le plan du plus grand diamètre du tambour à évacuation cyclique à orifices d'évacuation réglés par la vitesse de rotation du tambour par la force centrifuge d'un liquide auxiliaire
B04B 11/02 - Alimentation ou déchargement en continuSystèmes de commande à cet effet
C02F 1/28 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par absorption ou adsorption
Apparatus and method for separating oil from water in produced oil without requiring large separation tanks in which the fluid is heated, using a simple, energy efficient separation process, are described. Centrifugal forces, by themselves, are not effective for completely separating a two-component fluid, especially when the densities of the fluids are similar, such as for heavy oil. By combining both primary and secondary acoustic forces, and taking advantage of centrifugal forces from fluid flow, such that acoustic radiation forces initiate the process of droplet accumulation, and contribute to droplet coalescence, centrifugal separation is enhanced.
B01D 3/30 - Colonnes de fractionnement à pièces mobiles ou dans lesquelles est produit un mouvement centrifuge
B04B 1/18 - Centrifugeurs à tambours rotatifs à parois pleines pour la séparation de mélanges essentiellement liquides contenant ou non des particules solides à orifices d'évacuation dans le plan du plus grand diamètre du tambour à évacuation cyclique à orifices d'évacuation réglés par la vitesse de rotation du tambour par la force centrifuge d'un liquide auxiliaire
B04B 11/02 - Alimentation ou déchargement en continuSystèmes de commande à cet effet
Apparatus and method for separating oil from water in produced oil without requiring large separation tanks in which the fluid is heated, using a simple, energy efficient separation process, are described. Centrifugal forces, by themselves, are not effective for completely separating a two-component fluid, especially when the densities of the fluids are similar, such as for heavy oil. By combining both primary and secondary acoustic forces, and taking advantage of centrifugal forces from fluid flow, such that acoustic radiation forces initiate the process of droplet accumulation, and contribute to droplet coalescence, centrifugal separation is enhanced.
In one aspect, a method and system for detecting a change in fluid dynamics of a fluid flowing through an extra-corporeal circuit is disclosed, which includes establishing an acoustic wave resonance across a transverse dimension of at least a portion of a line associated with the extra-corporeal circuit through which the fluid flows, monitoring a phase signal of the resonant acoustic wave, and identifying occurrence of a change in fluid dynamics of the flowing fluid when the observed phase signal of the resonant acoustic wave indicates a deviation from the expected fluid flow signature. The change in fluid dynamics can be used to indicate a venous needle dislodgement event.
G01S 5/18 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance utilisant des ondes ultrasonores, sonores ou infrasonores
12.
System and method for detecting venous needle dislodgement
In one aspect, a method and system for detecting a change in fluid dynamics of a fluid flowing through an extra-corporeal circuit is disclosed, which includes establishing an acoustic wave resonance across a transverse dimension of at least a portion of a line associated with the extra-corporeal circuit through which the fluid flows, monitoring a phase signal of the resonant acoustic wave, and identifying occurrence of a change in fluid dynamics of the flowing fluid when the observed phase signal of the resonant acoustic wave indicates a deviation from the expected fluid flow signature. The change in fluid dynamics can be used to indicate a venous needle dislodgement event.
In one aspect, a method and system for detecting a change in fluid dynamics of a fluid flowing through an extra-corporeal circuit is disclosed, which includes establishing an acoustic wave resonance across a transverse dimension of at least a portion of a line associated with the extra-corporeal circuit through which the fluid flows, monitoring a phase signal of the resonant acoustic wave, and identifying occurrence of a change in fluid dynamics of the flowing fluid when the observed phase signal of the resonant acoustic wave indicates a deviation from the expected fluid flow signature. The change in fluid dynamics can be used to indicate a venous needle dislodgement event.
G01S 5/18 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance utilisant des ondes ultrasonores, sonores ou infrasonores
14.
DESTRUCTION OF AIRBORNE PATHOGENS, AND MICROORGANISMS ON GRAINS AND DRIED FOOD USING ULTRASOUND
An acoustic apparatus and method for using a combination of low-frequency and high-frequency vibration of dried food, grain being an example, such that there are a large number of collisions among the individual grain particles for destroying microorganisms that reside on the surface or just below the surface of the grain, are described. Embodiments of the invention permit bulk and continuous processing of the food. It is expected that such collisions do not produce any chemical changes in the food, nor should it have any adverse effects on the taste thereof. Embodiments of the apparatus are applicable to destruction of airborne microorganisms.
A23B 2/57 - Conservation des aliments ou des produits alimentaires, en général par irradiation sans chauffage par traitement au moyen d'ondes ultrasonores
A23B 9/06 - Conservation par irradiation ou traitement électrique sans effet de chauffage
A61L 2/025 - Procédés ou appareils de désinfection ou de stérilisation de matériaux ou d'objets autres que les denrées alimentaires ou les lentilles de contactAccessoires à cet effet utilisant des phénomènes physiques des ultrasons
15.
DESTRUCTION OF AIRBORNE PATHOGENS, AND MICROORGANISMS ON GRAINS AND DRIED FOOD USING ULTRASOUND
An acoustic apparatus and method for using a combination of low-frequency and high-frequency vibration of dried food, grain being an example, such that there are a large number of collisions among the individual grain particles for destroying microorganisms that reside on the surface or just below the surface of the grain, are described. Embodiments of the invention permit bulk and continuous processing of the food. It is expected that such collisions do not produce any chemical changes in the food, nor should it have any adverse effects on the taste thereof. Embodiments of the apparatus are applicable to destruction of airborne microorganisms.
An acoustic apparatus and method for using a combination of low-frequency and high-frequency vibration of dried food, grain being an example, such that there are a large number of collisions among the individual grain particles for destroying microorganisms that reside on the surface or just below the surface of the grain, are described. Embodiments of the invention permit bulk and continuous processing of the food. It is expected that such collisions do not produce any chemical changes in the food, nor should it have any adverse effects on the taste thereof. Embodiments of the apparatus are applicable to destruction of airborne microorganisms.
A61L 2/00 - Procédés ou appareils de désinfection ou de stérilisation de matériaux ou d'objets autres que les denrées alimentaires ou les lentilles de contactAccessoires à cet effet
A23B 9/00 - Conservation des graines comestibles, p. ex. des céréales
A23B 9/06 - Conservation par irradiation ou traitement électrique sans effet de chauffage
A23L 3/00 - Conservation des aliments ou produits alimentaires, en général, p.ex. pasteurisation ou stérilisation, spécialement adaptée aux aliments ou produits alimentaires
A23L 3/015 - Conservation des aliments ou produits alimentaires, en général, p.ex. pasteurisation ou stérilisation, spécialement adaptée aux aliments ou produits alimentaires par un traitement utilisant une variation de pression, une secousse, une accélération ou un cisaillement
A23L 3/32 - Conservation des aliments ou produits alimentaires, en général, p.ex. pasteurisation ou stérilisation, spécialement adaptée aux aliments ou produits alimentaires par traitement avec des courants électriques sans effet de chauffage
A61L 9/16 - Désinfection, stérilisation ou désodorisation de l'air utilisant des phénomènes physiques
B06B 1/00 - Procédés ou appareils pour produire des vibrations mécaniques de fréquence infrasonore, sonore ou ultrasonore
B65G 15/32 - Courroies ou porte-charges sans fin analogues en caoutchouc ou en matière plastique
17.
DETECTION OF STRUCTURAL VARIATIONS IN ARTICLES USING ACOUSTIC RESONANCE SPECTROSCOPY
An apparatus and method utilizing acoustic resonance spectroscopy applicable to any mechanical device or structure having internal or external components that need to be positioned away from a set point and then returned to the original position, such as a valve which is opened to pass fluids and subsequently dosed, for noninvasiveiy providing a measure of the deviation from the original position, and for classifying or grouping together objects that appear to be identical from the outside, but which may have slight external or internal differences, such as sealed containers filled with different fluids or materials, are described.
G01M 3/24 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par détection de la présence du fluide à l'emplacement de la fuite en utilisant des vibrations infrasonores, sonores ou ultrasonores
G01N 29/036 - Analyse de fluides en mesurant la fréquence ou la résonance des ondes acoustiques
G01N 29/14 - Recherche ou analyse des matériaux par l'emploi d'ondes ultrasonores, sonores ou infrasonoresVisualisation de l'intérieur d'objets par transmission d'ondes ultrasonores ou sonores à travers l'objet utilisant des techniques d'émission acoustique
18.
Detection of structural variations in articles using acoustic resonance spectroscopy
An apparatus and method utilizing acoustic resonance spectroscopy applicable to any mechanical device or structure having internal or external components that need to be positioned away from a set point and then returned to the original position, such as a valve which is opened to pass fluids and subsequently closed, for noninvasively providing a measure of the deviation from the original position, and for classifying or grouping together objects that appear to be identical from the outside, but which may have slight external or internal differences, such as sealed containers filled with different fluids or materials, are described.
An apparatus and method utilizing acoustic resonance spectroscopy applicable to any mechanical device or structure having internal or external components that need to be positioned away from a set point and then returned to the original position, such as a valve which is opened to pass fluids and subsequently dosed, for noninvasiveiy providing a measure of the deviation from the original position, and for classifying or grouping together objects that appear to be identical from the outside, but which may have slight external or internal differences, such as sealed containers filled with different fluids or materials, are described.
G01M 3/24 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par détection de la présence du fluide à l'emplacement de la fuite en utilisant des vibrations infrasonores, sonores ou ultrasonores
G01N 29/14 - Recherche ou analyse des matériaux par l'emploi d'ondes ultrasonores, sonores ou infrasonoresVisualisation de l'intérieur d'objets par transmission d'ondes ultrasonores ou sonores à travers l'objet utilisant des techniques d'émission acoustique
G01N 29/036 - Analyse de fluides en mesurant la fréquence ou la résonance des ondes acoustiques
20.
MULTIMODAL CHARACTERIZATION OF A FLUID USING A SINGLE DROPLET
Apparatus for performing multiple different measurements on a small specimen sample, enabling testing and diagnoses in real time at the point of care are described. The core of the apparatus includes an ultrasonic resonator cavity where acoustic resonances are used to determine the speed of sound and sound attenuation in a single droplet. Acoustic measurements are made in the reflection mode using electrical impedance of a small piezoelectric crystal transducer that operates in the thickness longitudinal mode. Combination of this technology with electromagnetic, electrical, and magnetic fields permits multiple types of measurements to be made using the same resonator cavity.
G01N 13/00 - Recherche des effets de surface ou de couche limite, p. ex. pouvoir mouillantRecherche des effets de diffusionAnalyse des matériaux en déterminant les effets superficiels, limites ou de diffusion
G01N 13/02 - Recherche de la tension superficielle des liquides
G01N 29/036 - Analyse de fluides en mesurant la fréquence ou la résonance des ondes acoustiques
Apparatus for performing multiple different measurements on a small specimen sample, enabling testing and diagnoses in real time at the point of care are described. The core of the apparatus includes an ultrasonic resonator cavity where acoustic resonances are used to determine the speed of sound and sound attenuation in a single droplet. Acoustic measurements are made in the reflection mode using electrical impedance of a small piezoelectric crystal transducer that operates in the thickness longitudinal mode. Combination of this technology with electromagnetic, electrical, and magnetic fields permits multiple types of measurements to be made using the same resonator cavity.
G01N 13/00 - Recherche des effets de surface ou de couche limite, p. ex. pouvoir mouillantRecherche des effets de diffusionAnalyse des matériaux en déterminant les effets superficiels, limites ou de diffusion
G01N 13/02 - Recherche de la tension superficielle des liquides
G01N 29/036 - Analyse de fluides en mesurant la fréquence ou la résonance des ondes acoustiques
Apparatus for performing multiple different measurements on a small specimen sample, enabling testing and diagnoses in real time at the point of care are described. The core of the apparatus includes an ultrasonic resonator cavity where acoustic resonances are used to determine the speed of sound and sound attenuation in a single droplet. Acoustic measurements are made in the reflection mode using electrical impedance of a small piezoelectric crystal transducer that operates in the thickness longitudinal mode. Combination of this technology with electromagnetic, electrical, and magnetic fields permits multiple types of measurements to be made using the same resonator cavity.
G01N 29/036 - Analyse de fluides en mesurant la fréquence ou la résonance des ondes acoustiques
G01N 33/52 - Utilisation de composés ou de compositions pour des recherches colorimétriques, spectrophotométriques ou fluorométriques, p. ex. utilisation de bandes de papier indicateur
G01N 29/22 - Recherche ou analyse des matériaux par l'emploi d'ondes ultrasonores, sonores ou infrasonoresVisualisation de l'intérieur d'objets par transmission d'ondes ultrasonores ou sonores à travers l'objet Détails
brevets
