Abstract

Disclosed are a source removing and introducing tooling, a smart cart and a source removing and introducing system, relating to the technical field of medical instruments, wherein same not only reduce the labour intensity and costs for removing and introducing a source body from and into a radiotherapy apparatus, but also greatly reduce the radiation risk of human operation. A source removing and introducing tooling comprising a first support frame, a shield door arranged on the first support frame, a shield cover located above the shield door, and a pull rod device, wherein the shield door comprises a movable first shield block; the shield cover can be separated from the shield door, and the shield cover comprises one opening and one accommodating space; and the pull rod device comprises a pull rod and a first connection portion arranged on the pull rod, and the pull rob can extend into the shield cover and drive the first connection portion to move inside the accommodation space of the shield cover.

IPC Classes  ?

• G21F 5/00 - Transportable or portable shielded containers

Abstract

Disclosed is a radiotherapy system, relating to the technical field of medical instruments, wherein same is capable of reducing the radiation risk of human operation when a radiotherapy apparatus is overhauled. The radiotherapy system comprises a radiotherapy apparatus and at least one source storage tank, wherein the radiotherapy apparatus comprises a treatment head and a radioactive source component, with the treatment head comprising a first opening and an accommodation space, and the radioactive source component being located in the accommodation space of the treatment head; the source storage tank comprises a body and a cover, with the body comprising a second opening and an accommodation space capable of accommodating the radioactive source component, and the cover being used for closing the second opening; and the second opening of the source storage tank can be in communication with the first opening of the radiotherapy apparatus, and the radioactive component is movable between the treatment head and the source storage tank.

IPC Classes  ?

• A61N 5/10 - X-ray therapyGamma-ray therapyParticle-irradiation therapy

Abstract

A multi-leaf collimator control method and system. The method comprises the steps of: controlling a multi-leaf collimator to be initialized and to move to a zero position; receiving treatment data, the treatment data comprising position information of a number N of treatment points and the shapes of fields at the N treatment points; rotating a treatment head to the conformal position of the first treatment point, and controlling the multi-leaf collimator to begin to conform the shape of the field at the first treatment point to start the treatment at the first treatment point; when the treatment head is rotated to a conformal position between the K-1th treatment point and the Kth treatment point, controlling the multi-leaf collimator to begin to conform the shape of the field at the Kth treatment point to start the treatment at the Kth treatment point; and carrying out the described operations repeatedly until the treatment at all treatment points is completed. The multi-leaf collimator control method and system can reduce treatment deviation during the treatment caused by improper control for the conformation of the multi-leaf collimator and radiation of the treatment head, thereby avoiding radiation damage to normal parts of a patient.

IPC Classes  ?

• A61N 5/10 - X-ray therapyGamma-ray therapyParticle-irradiation therapy

Abstract

The present invention relates to the technical field of medical radiation devices. Disclosed are a multi-source focused radiation treatment head and a treatment device. The multi-source focused radiation treatment head comprises a source body and a collimating body, wherein a plurality of source-carrying chambers for accommodating a radiation source and a corresponding plurality of ray outlets are distributed on the source body; a plurality of collimating holes are distributed, in a manner corresponding to the plurality of ray outlets, on the collimating body; and a plurality of beams emitted by a plurality of radiation sources converge at a focus point by means of the plurality of collimating holes. The multi-source focused radiation treatment head further comprises at least one switch body, wherein the at least one switch body is located on one side, close to or away from the focus point, of the collimating body; and the at least one switch body can move so as to block/emit some of the plurality of beams. By means of controlling the movement of a switch body arranged on one side, close to or away from a focus point, of a collimating body so as to block/emit some of a plurality of beams emitted by a source body, the partial opening and closing of a source of a treatment head is realized, thereby achieving the objectives of precisely adjusting radiation strength and improving the accuracy of dosage control, thus obtaining a better treatment effect.

IPC Classes  ?

• A61N 5/10 - X-ray therapyGamma-ray therapyParticle-irradiation therapy

Abstract

Provided is a multi-leaf collimator, belonging to the field of medical instruments and comprising: two leaf sets and a drive device (12), arranged opposite to each other; each leaf set comprises a plurality of leaves (1); each leaf (1) is connected to the drive device (12); the leaf (1) may move bidirectionally driven by the drive device (12); also comprised are a U-shaped optoelectronic switch system (A11) and a signal processing device (A20), said U-shaped optoelectronic switch system (A11) comprising: a plurality of U-shaped optoelectronic switches (4), corresponding to each leaf (1), arranged according to the direction of motion of the leaf (1); the U-shaped optoelectronic switch (4) is arranged on the upper end face side or lower end face side of the leaf (1); the U-shaped optoelectronic switch (4) comprises a U-shaped groove and a transmitter and receiver located at the two sides of the U-shaped groove; the leaf (1) is arranged inside the U-shaped groove and moves inside the U-shaped groove; the U-shaped optoelectronic switch system (A11) is connected to the signal processing system (A20), and the signal processing system (A20) is used for processing a pulse signal outputted by the U-shaped optoelectronic switch system (A11) in order to obtain a quantification value of the state of motion of the leaf (1). The multi-leaf collimator has improved reliability of monitoring and control of the leaves (1).

IPC Classes  ?

• A61N 5/10 - X-ray therapyGamma-ray therapyParticle-irradiation therapy
• G01B 11/02 - Measuring arrangements characterised by the use of optical techniques for measuring length, width, or thickness

Abstract

Disclosed in the present invention is a radiation therapy device which relates to the technical field of medical instruments and solves the problem of isocenter offsetting caused by the drooping of a treatment head in an existing radiation therapy device. A radiation therapy device, comprising a framework, a suspension arm, and a treatment head; the suspension arm comprises a connected end and a free end, the connected end of the suspension arm being connected to the framework and the free end of the suspension arm being connected to the treatment head; the radiation therapy device further comprises a support device which is provided between the free end and the connected end of the suspension arm and is connected to the suspension arm and/or the treatment head.

IPC Classes  ?

• A61N 5/00 - Radiation therapy

Abstract

Disclosed are a radiotherapy plan generation method and a radiotherapy plan system in the technical field of medical devices. The radiotherapy plan is aimed at a radiotherapy apparatus (100) having both a conformal treatment head (20) and a multi-source focused treatment head (10), so as to achieve collaboration by the different treatment heads (10, 20) on one apparatus, thereby improving the therapeutic efficiency and therapeutic effect. The radiotherapy plan generation method is applied to the radiotherapy apparatus (100), the radiotherapy apparatus (100) comprising at least two treatment heads (10, 20). The radiotherapy plan generation method includes: acquiring a body image of a patient (S101); according to the acquired body image, determining a treatment target region (S102); acquiring a prescribed dose for the treatment target region (S103); and according to the treatment target region and the prescribed dose for the treatment target region, determining treatment heads (10, 20), a treatment method and a treatment driving method all suitable for the target region (S104).

IPC Classes  ?

• A61N 5/10 - X-ray therapyGamma-ray therapyParticle-irradiation therapy

Abstract

A treatment device in the field of radiotherapy equipment, able to reduce the number of detectors (16). The present treatment device comprises a drum (11), a detector (16), and a sliding drive unit, the sliding drive unit comprising a sliding guide rail (12), a drive apparatus, and a movement plate (15), the detector (16) being secured onto the movement plate (15); driven by the drive apparatus, the movement plate (15) causes the detector (16) to slide along the sliding guide rail (12).

IPC Classes  ?

• A61N 5/10 - X-ray therapyGamma-ray therapyParticle-irradiation therapy

Abstract

A motion control method and a therapeutic device of a multileaf collimator (10) relating to the technical field of medical equipment. The multileaf collimator (10) can adjust a conformal position with patient's breath, thus avoiding the irradiation of normal tissues. A motion control method of a multileaf collimator (10), comprising: driving blades (111) to move to form a radiation beam-passable region (20) adapted to the shape of a tumor (3); acquiring respiratory cycle signals and images of the tumor (3) during respiratory cycles; determining a motion path of the tumor (3) during the respiratory cycles according to the respiratory cycle signals and the images of the tumor (3) during the respiratory cycle; acquiring a current image of the tumor (3); determining the direction and the distance of the movement of the tumor (3) within the radiation beam cross-section according to the current image of the tumor (3); and driving a small cart (12) to move within the radiation beam cross-section according to the direction and distance of the movement of the tumor (3) within the radiation beam cross-section, so that the radiation beam-passable region (20) formed when the radiation beam passes through the blades (111) is always focused on the tumor (3).

IPC Classes  ?

• A61N 5/10 - X-ray therapyGamma-ray therapyParticle-irradiation therapy

Abstract

Provided is a conformal intensity-modulated radiation therapy device, comprising: a housing, formed with an accommodating space and a shielding cavity; shielding material, filled within the shielding cavity; a rotary source-carrying body, accommodated within the accommodating space; a shielding rod, accommodated within the rotary source-carrying body; a source body, accommodated at a bottom end of the shielding rod and used for carrying a radiation source; a first driving portion, arranged on the housing and driving the rotary source-carrying body to rotate around a rotary axis thereof so that the radiation source switches between an open source position and a closed source position; a pre-collimation body, arranged at an emission end of the radiation source and comprising a collimation hole, the collimation hole directly facing the radiation source when the radiation source is in the open source position; a shielding door, arranged at the side of the pre-collimation body away from the radiation source and directly facing the radiation source; a multi-leaf collimator, arranged outside the housing and directly facing the shielding door. Also provided is a conformal intensity-modulated radiation therapy system.

IPC Classes  ?

• A61N 5/10 - X-ray therapyGamma-ray therapyParticle-irradiation therapy

Abstract

A radiotherapy system (100), at least comprising a rotatable cylinder (10), a first treatment head (20) and a second treatment head (30), the rotatable cylinder (10) rotating around its central axis, the first treatment head (20) and the second treatment head (30) being arranged on the rotatable cylinder (10) and rotating along with the rotatable cylinder (10). The first treatment head (20) and the second treatment head (30) respectively produce a radiation dose according to a treatment plan, at least one first multi-leaf collimator (21) is arranged on the first treatment head (20), at least one second multi-leaf collimator (31) is arranged on the second treatment head (30), and the field range and the accuracy of the first multi-leaf collimator (21) are the same as or different from the second multi-leaf collimator (31).

IPC Classes  ?

• A61N 5/10 - X-ray therapyGamma-ray therapyParticle-irradiation therapy
• A61N 5/01 - Devices for producing movement of radiation source during therapy

Abstract

A focussed radiotherapy apparatus (100) and a radiation therapy device (200), the focussed radiotherapy apparatus (100) at least comprising: a source body (10), provided with a plurality of radiation sources (11); a pre-collimation body (20), fixedly connected to the source body (10), the pre-collimation body (20) comprising a plurality of pre-collimation holes, the pre-collimation holes corresponding to the radiation sources (11) in a one-to-one manner; a collimation body (30), covering the source body (10) and the pre-collimation body (20) and rotating with respect to the source body (10) and the pre-collimation body (20), the collimation body (30) comprising at least one curved surface, a plurality of groups of collimators, having different specifications, and shielding positions (31) being arranged on the curved surface, each group of collimators and/or shielding positions (31) being arranged in correspondence with the radiation sources (11), the collimation body (30) rotating to switch different groups of collimators and/or shielding positions (31) to be aligned with the radiation sources (11) so as to obtain different field sizes and/or implement at least partial shielding of the source body (10); a switch body (40), arranged on an outer side of the collimation body (30) and moving with respect to the source body (10), the pre-collimation body (20) and the collimation body (30) so as to enable rays of the radiation sources (11) to be focussed or shielded.

IPC Classes  ?

• A61N 5/10 - X-ray therapyGamma-ray therapyParticle-irradiation therapy
• A61N 5/01 - Devices for producing movement of radiation source during therapy

Abstract

A multipurpose radiotherapy system comprises a base, a movement bed, a roller, and a treatment head. The movement bed and the roller are disposed on the base. The treatment head is mounted on the roller. The treatment head comprises a multi-source focusing treatment head and an intensity modulated treatment head. The multi-source focusing treatment head and the intensity modulated treatment head are distributed on two sides of the roller, and are connected to the roller by means of an arc. The multipurpose radiotherapy system achieves the objective of performing three-dimensional oriented multi-source focusing treatment and the intensity modulated treatment on a same device.

IPC Classes  ?

• A61N 5/10 - X-ray therapyGamma-ray therapyParticle-irradiation therapy

Abstract

A radiation therapy machine, comprising a base (1), a drum (2), two treatment heads (3, 3') and a treatment bed (4), the drum (2) being installed on the base (1), the two treatment heads (3, 3') being installed on the drum (2), and the invention being characterized in that it also comprises: two drive apparatuses (5, 5') installed on the drum (2); gears (14, 14') installed on the drum (2), the drive apparatuses (5, 5') driving the gears (14,14'); and arc-shaped gear racks (13, 13') installed on the treatment heads (3, 3') and engaging with the gears (14, 14'); the drive apparatuses (5, 5') drive the gears (14, 14'), and, driven by the gears (14, 14'), the treatment heads (3, 3') fixed to the arc-shaped gear racks (13, 13') oscillate along the axis of the drum (2). The two treatment heads (3, 3') oscillate along the drum (2) axis such that the two treatment heads (3, 3') rotate in two directions, thereby increasing the ratio of focused skin.

IPC Classes  ?

• A61N 5/01 - Devices for producing movement of radiation source during therapy