CN219630465U - Radiotherapy device - Google Patents
Radiotherapy device Download PDFInfo
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- CN219630465U CN219630465U CN202320905304.7U CN202320905304U CN219630465U CN 219630465 U CN219630465 U CN 219630465U CN 202320905304 U CN202320905304 U CN 202320905304U CN 219630465 U CN219630465 U CN 219630465U
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- 238000001514 detection method Methods 0.000 claims description 36
- 230000001225 therapeutic effect Effects 0.000 claims description 28
- 230000017525 heat dissipation Effects 0.000 claims description 16
- 238000007493 shaping process Methods 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000002560 therapeutic procedure Methods 0.000 claims 1
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- Radiation-Therapy Devices (AREA)
Abstract
The present utility model provides a radiation therapy device comprising: a gantry, a treatment beam assembly, and an imaging assembly; the treatment beam component and the imaging component are arranged on the same side end face of the annular bearing and are positioned in the same plane, so that a coaxial and coplanar structure of the treatment beam center and the diagnosis beam center is formed, and the radiation treatment can be directly carried out after the image shooting of a patient is completed without moving a sickbed in a large range, thereby realizing the concentric scanning and the concentric treatment of the patient, reducing the positioning error and the safety risk caused by the large-distance movement of the patient, and effectively reducing the cost of the whole machine; in addition, the driving device can directly drive the annular bearing without arranging a gear, a gearbox and other structures, so that the annular bearing, a treatment beam component and an imaging component on the annular bearing can be controlled to stably operate under the conditions of variable speed, high speed and ultra-low speed.
Description
Technical Field
The utility model relates to the technical field of radiotherapy medical equipment, in particular to a radiotherapy device.
Background
Image guidance plays an extremely important role in patient positioning for radiotherapy and adaptive radiotherapy, so that the radiotherapy positioning process is visible and accurate and is developed in a clearer and more accurate direction. Image-guided products such as ultrasound, computed tomography (Computed Tomography, CT), cone-beam computed tomography (Cone Beam Computed Tomography, CBCT), magnetic resonance, and even positron emission computed tomography (Positron Emission Tomography, PET) CT-guided products have been introduced by various manufacturers to achieve superior anatomy imaging, soft tissue imaging, or biofunction imaging to improve treatment accuracy. The techniques have been implemented to acquire patient volume images before and during patient treatment, to image and position tumors, normal tissue, or patient body surface contours, to enable precise three-dimensional positioning of anatomical structures during positioning, and to adjust positions or plans based on positional changes.
Kilovolt cone beam CT (Kilo Volt-Cone Beam Computed Tomography, kV-CBCT) has become a standard configuration for image guidance of medium and high-end medical linear accelerators due to the characteristics of moderate price, simple use and compact structure. However, due to the technical principle characteristics, the soft tissue resolution capability is poor, the relation between the tumor and peripheral organs at risk cannot be effectively distinguished, the method can be generally only used for osseous registration, but deformation registration cannot be carried out, and the method is more difficult to meet the requirements of the adaptive radiotherapy on indexes such as soft tissue resolution capability, CT value linearity, uniformity, accuracy and the like, and becomes one of the bottlenecks of automatic sketching and dosage calculation in the adaptive radiotherapy process.
Disclosure of Invention
In view of this, the present utility model provides a radiation therapy apparatus, so that the overall cost can be effectively reduced, and the therapeutic beam assembly and the imaging assembly can be controlled to stably operate under the conditions of variable speed, high speed and ultra-low speed.
The technical scheme of the utility model is realized specifically as follows:
a radiation therapy device, the radiation therapy device comprising: a gantry, a treatment beam assembly, and an imaging assembly;
the frame comprises: the device comprises a base, an annular bearing and a driving device;
the annular bearing is arranged on the base, a through hole is formed in the middle of the annular bearing, and the annular bearing can rotate around the longitudinal axis of the through hole;
the treatment beam component and the imaging component are arranged on the same side end face of the annular bearing and can rotate along with the annular bearing;
the treatment beam assembly and the imaging assembly are located in the same plane;
the driving device is used for driving the annular bearing to rotate;
the driving device includes: a rotor and a stator;
the rotor is annular and sleeved and fixed on the outer side of the annular bearing; a plurality of magnets are arranged on the rotor; the magnets are uniformly arranged along the circumferential direction of the rotor;
the stator is annular, sleeved on the outer side of the rotor and fixedly connected with the base; the stator is provided with a plurality of groups of coils, and the plurality of groups of coils are uniformly arranged along the circumferential direction of the stator.
Preferably, the therapeutic beam assembly comprises: shu Liuchan, a field shaping unit and an imaging unit;
the Shu Liuchan generating unit and the imaging unit are oppositely arranged on the same side end face of the annular bearing about the longitudinal axis of the through hole;
the portal forming unit is arranged between the Shu Liuchan raw unit and the imaging unit and is connected with the Shu Liuchan raw unit;
the Shu Liuchan generating unit is used for generating rays for treatment;
the field shaping unit is used for blocking useless rays and enabling the useful rays to form a required treatment beam in a specific shape;
the imaging unit is used for receiving rays of the treatment beam passing through the portal forming unit.
Preferably, the imaging assembly includes: the device comprises an X-ray unit, a high-voltage generation unit, a detection unit, a shielding body and a phase establishment unit;
the X-ray unit and the detection unit are oppositely arranged on the same side end face of the annular bearing relative to the longitudinal axis of the through hole;
the shielding body is arranged on one side of the detection unit, which is close to the X-ray unit;
the high voltage generating unit is connected with the X-ray unit;
the phase establishing unit is connected with the detecting unit;
the X-ray unit is used for generating X-rays;
the high voltage generating unit is used for providing high voltage for the X-ray unit so as to generate X-rays;
the detection unit is used for receiving the X-rays;
the shielding body is used for being opened or closed along one side or two sides of the detection unit so as to expose or shield the detection unit;
the phase establishing unit is used for carrying out data acquisition and reconstruction according to the X-rays received by the detection unit and outputting reconstructed image data.
Preferably, a plurality of detectors are arranged in the detection unit, and the plurality of detectors are sequentially arranged in an arc shape.
Preferably, the driving device further includes: a conductive slip ring assembly;
the conductive slip ring assembly is arranged on the annular bearing and is used for providing power for components on the radiotherapy device and transmitting control signals and data.
Preferably, the conductive slip ring assembly includes: an annular cylinder, a brush assembly, and a plurality of conductive loops;
one end of the annular cylinder is connected with one end of the annular bearing;
the plurality of conductive loops are sleeved on the outer side surface of the annular cylinder body, and the plurality of conductive loops are arranged in parallel;
one end of the electric brush component is connected with the base of the frame, and the other end of the electric brush component is respectively in sliding contact with the conductive loops.
Preferably, the conductive slip ring assembly includes: a brush assembly and a plurality of conductive loops;
the plurality of conductive loops are concentric circles with different radiuses respectively and are arranged on the side surface of one end of the annular bearing in a way of encircling the rotation center of the annular bearing in turn;
one end of the electric brush component is fixedly connected with the base of the frame, and the other end of the electric brush component is respectively in sliding contact with the conductive loops.
Preferably, the radiotherapy device further comprises: a controller;
the controller is respectively connected with the treatment beam assembly, the imaging assembly and the driving device and is used for respectively outputting control signals to the treatment beam assembly, the imaging assembly and the driving device;
the therapeutic beam assembly, the imaging assembly and the driving device respectively generate corresponding motions according to the received control signals.
Preferably, the radiotherapy device further comprises: a housing;
the housing, treatment beam assembly, and imaging assembly are all disposed within the enclosure.
Preferably, the radiotherapy device further comprises: a patient support assembly;
the patient support assembly is disposed outside the housing with a support surface of the patient support assembly movable back and forth along a longitudinal axis in the through bore of the annular bearing.
Preferably, the radiotherapy device further comprises: a heat dissipation assembly;
the heat dissipation assembly includes: a heat exchanger and a radiator; the heat exchanger is connected with the radiator through a pipeline;
the heat exchanger is arranged in the housing and is used for outputting heat in the housing to the radiator through a pipeline;
the radiator is used for radiating heat to the outside of the housing.
Preferably, the radiotherapy device further comprises: a heat dissipation assembly;
the heat dissipation assembly includes: a heat exchanger and an outdoor unit; the heat exchanger is connected with the outdoor unit through a pipeline;
the heat exchanger is arranged on the housing and is used for outputting heat in the housing to the outdoor unit through a pipeline;
the outdoor unit is used for radiating heat outdoors.
As can be seen from the above, in the radiotherapy device of the present utility model, since the therapeutic beam assembly and the imaging assembly are both disposed on the same side end surface of the annular bearing and are located in the same plane, a structure in which the therapeutic beam center and the diagnostic beam center are coaxial and coplanar is formed, and after the image photographing of the patient is completed, the radiotherapy can be directly performed without moving the patient bed in a large range, thereby implementing concentric scanning and concentric treatment of the patient, and reducing positioning errors and safety risks caused by large distance movement of the patient. In addition, compared with the structure that the treatment beam component and the imaging component are not in the same plane in the prior art, the technical scheme of the utility model has the advantages that the treatment beam component and the imaging component are arranged on the same set of stand, so that the cost of the whole machine can be effectively reduced, the high-quality radiotherapy can be realized in an economic way, and the reduction of medical cost is promoted.
In addition, the driving device can directly drive the annular bearing without arranging a gear, a gearbox and other structures, so that the annular bearing, a treatment beam component and an imaging component on the annular bearing can be controlled to stably operate under the conditions of variable speed, high speed and ultra-low speed.
Drawings
Fig. 1 is a schematic structural view of a radiotherapy apparatus (without a casing) according to an embodiment of the present utility model.
Fig. 2 is a schematic view of a radiation therapy device (with a housing) according to another embodiment of the present utility model.
Fig. 3 is a schematic view of a portion of a radiotherapy apparatus according to an embodiment of the present utility model.
Fig. 4 is a schematic structural view of a frame and a driving device according to an embodiment of the present utility model.
Fig. 5 is a schematic structural diagram of a driving device according to an embodiment of the utility model.
Fig. 6 is a schematic view of a frame and a driving device according to another embodiment of the present utility model.
Fig. 7 is a schematic view of a frame and a driving device according to another embodiment of the present utility model.
Fig. 8 is a schematic view showing the positions of the moving parts in the treatment mode according to an embodiment of the present utility model.
Fig. 9 is a schematic view showing the positions of the moving parts in a non-therapeutic mode according to another embodiment of the present utility model.
Fig. 10 is a schematic diagram of a heat dissipation structure according to an embodiment of the utility model.
Fig. 11 is a schematic diagram of a heat dissipation structure according to another embodiment of the utility model.
Fig. 12 is a schematic view of a heat dissipation structure according to another embodiment of the utility model.
Detailed Description
In order to make the technical scheme and advantages of the present utility model more apparent, the present utility model will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural view of a radiotherapy apparatus according to an embodiment of the present utility model. As shown in fig. 1, the radiotherapy apparatus in the embodiment of the present utility model includes: a gantry 100, a treatment beam assembly 200, and an imaging assembly 300;
the rack 100 includes: a base 101, an annular bearing 102 and a driving device 103;
the annular bearing 102 is arranged on the base 101, a through hole 121 is formed in the middle of the annular bearing 102, and the annular bearing 102 can rotate around the longitudinal axis of the through hole 121;
the therapeutic beam assembly 200 and the imaging assembly 300 are arranged on the same side end surface of the annular bearing 102 and can rotate along with the annular bearing 102;
the treatment beam assembly 200 and the imaging assembly 300 lie in the same plane;
the driving device 103 is used for driving the annular bearing 102 to rotate;
the driving device 103 includes: a rotor 131 and a stator 132;
the rotor 131 is annular and sleeved and fixed on the outer side of the annular bearing 102; the rotor 131 is provided with a plurality of magnets; the plurality of magnets are uniformly arranged along the circumferential direction of the rotor 131;
the stator 132 is annular, sleeved on the outer side of the rotor 131, and fixedly connected with the base 101; the stator 132 is provided with a plurality of groups of coils, and the plurality of groups of coils are uniformly arranged along the circumferential direction of the stator 132.
In the radiotherapy device, the treatment beam component and the imaging component are arranged on the same side end face of the annular bearing and are positioned in the same plane, so that a coaxial and coplanar structure of the treatment beam center and the diagnosis beam center is formed, and the radiotherapy can be directly carried out after the image shooting of a patient is completed without moving a sickbed in a large range, thereby realizing concentric scanning and concentric treatment of the patient and reducing positioning errors and safety risks caused by large-distance movement of the patient.
In addition, compared with the structure that the treatment beam component and the imaging component are not in the same plane in the prior art, the technical scheme of the utility model has the advantages that the treatment beam component and the imaging component are arranged on the same set of stand, so that the cost of the whole machine can be effectively reduced, the high-quality radiotherapy can be realized in an economic way, and the reduction of medical cost is promoted.
In addition, in the present disclosure, a variety of specific implementations may be used to implement the therapeutic beam assembly and imaging assembly described above. The following describes the technical solution of the present utility model in detail by taking several specific implementation manners thereof as examples.
For example, in a preferred embodiment of the present utility model, the therapeutic beam assembly 200 comprises: shu Liuchan, a field shaping unit 202 and an imaging unit 203;
the Shu Liuchan green unit 201 and the imaging unit 203 are oppositely arranged on the same side end face of the annular bearing 102 with respect to the longitudinal axis of the through hole 121;
the field shaping unit 202 is arranged between the Shu Liuchan raw unit 201 and the imaging unit 203 and is connected with the Shu Liuchan raw unit 201;
the Shu Liuchan generating unit 201 is used for generating rays for treatment;
the field shaping unit 202 is configured to block the unnecessary radiation, so that the useful radiation forms a desired therapeutic beam in a specific shape;
the imaging unit 203 is configured to receive the radiation of the therapeutic beam passing through the field shaping unit 202, so as to implement a quality control function.
As another example, in a preferred embodiment of the present utility model, the imaging assembly 300 includes: an X-ray unit 301, a high voltage generation unit 302, a detection unit 303, a shield 304, and a phase establishment unit 305;
the X-ray unit 301 and the detection unit 303 are oppositely disposed on the same side end face of the annular bearing 102 with respect to the longitudinal axis of the through hole 121;
the shielding 304 is arranged on the side of the detection unit 303 close to the X-ray unit 301;
the high voltage generating unit 302 is connected to the X-ray unit 301;
the phase establishing unit 305 is connected with the detecting unit 303;
the X-ray unit 301 is configured to generate X-rays;
the high voltage generating unit 302 is configured to provide a high voltage to the X-ray unit 301 to generate X-rays;
the detecting unit 303 is configured to receive the X-rays;
the shielding body 304 is used for being opened or closed along one side or two sides of the detection unit 303 so as to expose or shield the detection unit 303;
the phase establishing unit 305 is configured to perform data acquisition and reconstruction according to the X-rays received by the detecting unit 303, and output reconstructed image data.
In the above embodiment, the therapeutic beam assembly and the imaging assembly are both disposed on the same side end surface of the annular bearing, rotate around the same frame axis, and the therapeutic beam center and the image beam are located in the same plane, so that a coaxial and coplanar structure of the therapeutic beam center and the image beam center is formed.
Furthermore, in the above-described imaging assembly, a shield is also provided on one side of the detection unit (for example, the shield may be slidably provided on one side of the detection unit). When the treatment beam component generates rays of the treatment beam, the shielding body can be closed to shield the detection unit, so that scattered rays of the treatment beam can be shielded to reduce radiation damage of the scattered rays of the treatment beam to the detection unit; when the X-ray unit of the imaging component generates X-rays, the shielding body can slide away to expose the detection unit, so that the detection unit can receive the X-rays generated by the X-ray unit, further can acquire images, and provides needed information for image guidance and treatment planning.
In addition, in the technical scheme of the utility model, the positions of the treatment beam component and the imaging component on the end face of the annular bearing can be set according to the requirements of actual application scenes, so that the rays of the treatment beam and the X-rays are positioned in the same plane, and the included angle between the rays of the treatment beam and the X-rays is a preset angle.
For example, in a preferred embodiment of the present utility model, the angles between the rays of the therapeutic beam and the X-rays may be 15 °, 30 °, 45 °, 90 °, 105 °, 120 °, 135 °, 180 °, 270 °, etc.
In addition, in the technical scheme of the utility model, as the phase establishing unit is arranged in the imaging component, the phase establishing unit can directly acquire and reconstruct data according to the X-rays received by the detection unit and output the reconstructed image data, and therefore, the reconstruction of the image data can be completed at one side of the annular bearing. Therefore, the imaging component in the utility model does not directly output the data acquired by the detection unit to the external equipment (such as a computer, a data processing device and the like) connected with the imaging component, but outputs the image data reconstructed according to the acquired data, so that the data transmission is not needed to be carried out through the high-speed data channel and the external equipment connected with the imaging component, thereby greatly reducing the requirements on transmission bandwidth and transmission instantaneity and reducing the bandwidth occupation caused by a large amount of data transmission.
Further, as an example, in a preferred embodiment of the present utility model, a Megavolt (MV) beam current generation unit and an imaging unit may be configured in the therapeutic beam assembly; an X-ray unit and a detection unit of kilovolt (Kilo Volt) may be configured in the imaging assembly.
Additionally, as an example, in a preferred embodiment of the present utility model, the imaging assembly may employ fan-beam CT imaging techniques (e.g., kilovoltage fan-beam CT techniques); the imaging device comprises an imaging component, wherein a plurality of detectors are arranged in a detection unit in the imaging component, and the detectors are sequentially arranged in an arc shape.
In the technical scheme of the utility model, the radiation therapy device in the embodiment of the utility model has the characteristics of higher scanning speed, higher density resolution, more accurate CT value and the like by adopting a fan-beam CT imaging technology and adopting a plurality of arc-shaped or fan-shaped detectors, has the image quality of far beyond CBCT, can provide more accurate target positions and accurate electron density information required by treatment for radiotherapy, can clearly distinguish the change of tumors and organs at each treatment, realizes high-definition navigation and accurate image registration, and provides a high-quality image basis for online self-adaptive radiotherapy.
In addition, in the technical scheme of the utility model, the driving device in the radiotherapy device is directly sleeved on the annular bearing. In the working state, a plurality of magnets on a rotor in the driving device can generate corresponding magnetic fields; when a certain current is introduced into the coil of the stator, a changing magnetic field is generated, and the magnetic field interacts with the magnetic field generated by the rotor to generate electromagnetic thrust so as to push the rotor and the stator to rotate. Because the stator is fixed on the base, the rotor rotates under the action of electromagnetic thrust, so that the annular bearing fixed with the rotor can be driven to rotate, and the treatment beam component and the imaging component arranged on the annular bearing are driven to rotate around the longitudinal axis of the through hole on the annular bearing. Thus, when the therapeutic beam assembly or the imaging assembly is needed, the annular bearing can be driven to rotate by the driving device, and the therapeutic beam assembly or the imaging assembly is driven to rotate to the corresponding position.
The driving device can directly drive the annular bearing without arranging a gear, a gearbox and other structures, so that the annular bearing, a treatment beam component and an imaging component on the annular bearing can be controlled to stably operate under the conditions of variable speed, high speed and ultra-low speed.
Further, as an example, in a preferred embodiment of the present utility model, the magnet on the rotor may be an electromagnet or a permanent magnet.
In addition, as an example, in a preferred embodiment of the present utility model, the stator may be in an integral structure, or may be in a multi-stage structure, and mounted to the frame in a stage-by-stage manner, so that the difficulty in processing, assembling and transporting the large-sized annular stator may be greatly reduced.
In addition, as an example, in a preferred embodiment of the present utility model, the driving device 103 may further include: one or more position sensors 104;
the position sensor 104 is disposed on the annular bearing 102, and is configured to acquire angle and/or position information of rotation of the annular bearing 102.
Additionally, as an example, in a preferred embodiment of the present utility model, the position sensor 104 may further include: a read head and a grid (e.g., steel, grating, or magnetic grid, etc.);
the reading head is arranged on the rotating part of the annular bearing, and the grid electrode is arranged on the fixed part of the annular bearing;
alternatively, the reading head is disposed on a fixed portion of the annular bearing and the gate is disposed on a rotating portion of the annular bearing.
Therefore, through the position sensor, the rotating angle information of the annular bearing and/or the accurate position information of the annular bearing can be obtained in real time, so that the rotating angle and the rotating speed of the annular bearing can be accurately controlled.
In addition, as an example, in a preferred embodiment of the present utility model, the position sensor may be a steel grating displacement sensor, a magnetic grating displacement sensor or a grating displacement sensor, or other suitable position sensors, which are not listed here.
In addition, as an example, in a preferred embodiment of the present utility model, the driving device 103 may further include: a conductive slip ring assembly 133;
the conductive slip ring assembly 133 is disposed on the annular bearing 102 for providing power, transmitting control signals and data to components on the radiation therapy device.
In addition, in the technical scheme of the utility model, the conductive slip ring assembly can be realized by using various specific implementation modes. The following describes the technical solution of the present utility model in detail by taking several specific implementation manners thereof as examples.
For example, as shown in fig. 6, in a preferred embodiment of the present utility model, the conductive slip ring assembly 133 may include: an annular cylinder 331, a brush assembly 332, and a plurality of conductive loops 333;
one end of the annular cylinder 331 is directly or indirectly connected with one end of the annular bearing 102;
the plurality of conductive loops 333 are sleeved on the outer side surface of the annular cylinder 331, and the plurality of conductive loops 333 are arranged in parallel;
one end of the brush assembly 332 is connected to the base 101 of the frame 100, and the other ends thereof are in sliding contact with the conductive loops 333.
In the conductive slip ring assembly, the annular cylinder extends along the longitudinal axis of the through hole of the annular bearing, a plurality of conductive loops surrounding the outer wall of the annular cylinder are distributed on the outer wall of the annular cylinder in parallel, and the conductive loops can be used as conductive channels for power supply, system grounding, signal or data transmission respectively; the brush assembly may be used to provide power, transmit signals and data to the various conductive loops.
As another example, as shown in fig. 7, in another preferred embodiment of the present utility model, the conductive slip ring assembly 133 may include: a brush assembly 332 and a plurality of conductive loops 333;
the plurality of conductive rings 333 are concentric circles having different radii, respectively, and are disposed on a side surface of one end of the annular bearing 102 sequentially around a rotation center of the annular bearing 102;
one end of the brush assembly 332 is fixedly connected to the base 101 of the frame 100, and the other ends thereof are respectively in sliding contact with the conductive loops 333.
In the conductive slip ring assembly, a plurality of conductive loops are arranged on the side surface of one end of the annular bearing in a concentric circle manner and directly and sequentially surround the rotation center of the annular bearing, and the conductive loops can be used as conductive channels for power supply, system grounding and signal or data transmission respectively; the brush assembly may be used to provide power, transmit signals and data to the various conductive loops.
Additionally, as an example, in a preferred embodiment of the present utility model, the conductive slip ring assembly may further include: a fixing member (not shown in the drawings);
the fixing piece is used for fixing one end of the electric brush assembly on the base of the frame and fixing the plurality of conductive loops on the annular bearing.
By the fixing piece, the electric brush assembly can be fixed on the base of the frame, and the plurality of conductive loops are fixed on the side face of one end of the annular bearing.
Further, as an example, in a preferred embodiment of the present utility model, the radiotherapy apparatus may further include: a controller 400;
the controller 400 is respectively connected with the therapeutic beam assembly 200, the imaging assembly 300 and the driving device 103, and is used for respectively outputting control signals to the therapeutic beam assembly 200, the imaging assembly 300 and the driving device 103;
the therapeutic beam assembly 200, imaging assembly 300, and drive device 103 respectively generate corresponding motions according to the received control signals to achieve imaging or therapeutic functions.
For example, in a treatment mode (e.g., when a patient is treated with a treatment beam assembly), corresponding control signals may be output by the controller to the treatment beam assembly, the imaging assembly, and the drive device, respectively, so that each of the moving components may be moved to a desired position as desired for a treatment plan, operation.
For example, as shown in fig. 8, in the treatment mode, each component may rotate around the rotation center of the annular bearing (i.e. the longitudinal axis of the through hole) under the drive of the driving device to change the rotation speed, so that the component will move to any required working position according to the treatment plan and the operation requirement, so that the position matches with the position required by the control point (for example, an eccentric position as shown in fig. 8 can be formed), and the dynamic speed regulation and the accurate position control of the annular bearing can be realized according to the high-speed rotation and the high dynamic response of the annular bearing, so that the treatment efficiency can be effectively improved, the throughput of patients in hospitals can be greatly improved, or the dose distribution can be improved, and the treatment effect can be improved.
For another example, in a non-therapeutic mode (for example, when the imaging assembly is used for image acquisition or therapeutic field switching of a patient), corresponding control signals can be respectively output to the therapeutic beam assembly, the imaging assembly and the driving device through the controller, so that each moving component can be stopped at a preset specific position to form a low eccentric state (for example, a dynamic balance state) of the whole machine, so that the dynamic balance problem during high-speed operation is reduced, and the annular bearing on the frame can rotate at a high speed.
For example, as shown in fig. 9, in the non-therapeutic mode, the components of the therapeutic beam assembly and the imaging assembly may be stopped at a predetermined specific position under the drive of the driving device, so as to form a dynamic balance state as shown in fig. 9, so that the annular bearing on the gantry may rotate at a high speed to adapt to the requirement of high-speed image acquisition of the imaging assembly.
In addition, in the technical solution of the present utility model, the controller 400 may also autonomously control each component controlled by the controller, and synchronize state information, control data, and position information between each component through a synchronization signal, and perform corresponding signal transmission.
Further, as an example, as shown in fig. 2, in a preferred embodiment of the present utility model, the radiotherapy apparatus further comprises: a housing 600;
the gantry 100, treatment beam assembly 200, and imaging assembly 300 are all disposed within the housing 600.
The housing may be a closed structure that may cover the outside of the gantry, treatment beam assembly, and imaging assembly for corresponding protection.
Further, as an example, as shown in fig. 2, in a preferred embodiment of the present utility model, the radiotherapy apparatus further comprises: a patient support assembly 500;
the patient support assembly 500 is disposed outside the housing 600, and the support surface of the patient support assembly 500 is movable back and forth along a longitudinal axis in the through bore 121 of the annular bearing 102.
Further, as an example, in a preferred embodiment of the present utility model, the radiotherapy apparatus further comprises: a heat dissipation assembly;
the heat dissipation assembly includes: a heat exchanger and a radiator; the heat exchanger is connected with the radiator through a pipeline;
the heat exchanger is arranged in the housing and is used for outputting heat in the housing to the radiator through a pipeline;
the radiator is used for radiating heat to the outside of the housing.
In the above heat dissipating assembly, the heat exchanger may be provided with a cold air outlet and a hot air inlet, and a corresponding fan may be provided to allow the hot air inside the radiotherapy device to flow through the heat exchanger, so that heat in the housing may be absorbed, and then the absorbed heat may be output to the heat sink through the pipeline. Through above-mentioned radiator unit, can take out machine heat to outside through refrigerant (e.g. water) from setting up in the housing in the treatment room, realize the cooling of the part in the housing, reduce the inside temperature variation of computer lab and bring the influence to machine operating temperature, also reduce the patient uncomfortable who brings between equipment temperature and the patient comfortable temperature simultaneously and feel to create the comfortable environment when patient treats.
Further, as an example, as shown in fig. 10, in a preferred embodiment of the present utility model, the radiator (e.g., the independent water chiller shown in fig. 10, etc.) may be provided in a separate room, and the radiator may radiate heat into the room and then radiate heat outdoors through an air conditioner or door and window of the room.
In addition, as shown in fig. 11, in a preferred embodiment of the present utility model, the radiator (e.g., the heat exchanger, the water tank, the water pump, etc. shown in fig. 11) may be provided in a separate room, and the radiator is connected to the outdoor unit through a pipe, outputs heat to the outdoor unit through the pipe, and then radiates heat to the outside through the outdoor unit.
Further, as an example, as shown in fig. 12, in a preferred embodiment of the present utility model, the radiotherapy apparatus further comprises: a heat dissipation assembly;
the heat dissipation assembly includes: a heat exchanger and an outdoor unit; the heat exchanger is connected with the outdoor unit through a pipeline;
the heat exchanger is arranged on the housing and is used for outputting heat in the housing to the outdoor unit through a pipeline;
the outdoor unit is used for radiating heat outdoors.
In the above heat radiating assembly, the heat exchanger may be disposed at a top of the housing. The heat exchanger can be provided with a cold air outlet and a hot air inlet, and can be provided with corresponding fans, so that hot air in the radiotherapy device flows through the heat exchanger, thereby absorbing heat in the housing, and then outputting the absorbed heat to the outdoor unit through the pipeline.
In summary, in the technical scheme of the utility model, as the treatment beam component and the imaging component are both arranged on the same side end surface of the annular bearing and are positioned in the same plane, a structure that the center of the treatment beam and the center of the diagnosis beam are coaxial and coplanar is formed, and the radiotherapy can be directly carried out after the image shooting of a patient is completed without moving a sickbed in a large range, thereby realizing concentric scanning and concentric treatment of the patient and reducing positioning errors and safety risks caused by large-distance movement of the patient. In addition, compared with the structure that the treatment beam component and the imaging component are not in the same plane in the prior art, the technical scheme of the utility model has the advantages that the treatment beam component and the imaging component are arranged on the same set of stand, so that the cost of the whole machine can be effectively reduced, the high-quality radiotherapy can be realized in an economic way, and the reduction of medical cost is promoted.
In addition, the driving device can directly drive the annular bearing without arranging a gear, a gearbox and other structures, so that the annular bearing, a treatment beam component and an imaging component on the annular bearing can be controlled to stably operate under the conditions of variable speed, high speed and ultra-low speed.
In addition, because the shielding body is further arranged at one side of the detection unit in the technical scheme of the utility model, when the treatment beam component generates rays of the treatment beam, the shielding body can be closed to shield the detection unit, so that scattered rays of the treatment beam can be shielded, and radiation damage of the scattered rays of the treatment beam to the detection unit is reduced; when the X-ray unit of the imaging component generates X-rays, the shielding body can slide away to expose the detection unit, so that the detection unit can receive the X-rays generated by the X-ray unit, further can acquire images, and provides needed information for image guidance and treatment planning.
In addition, as the heat dissipation component with better effect is further arranged in the technical scheme of the utility model, the heat in the housing can be better absorbed, the heat of the machine is brought out from the housing to the outside through the refrigerant, the cooling of the components in the housing is realized, the influence of the temperature change in the machine room on the running temperature of the machine is reduced, and meanwhile, the discomfort of the patient caused by the difference between the equipment temperature and the comfort temperature of the patient is also reduced, so that the comfort environment for the treatment of the patient is created.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the utility model.
Claims (12)
1. A radiation therapy device, comprising: a gantry, a treatment beam assembly, and an imaging assembly;
the frame comprises: the device comprises a base, an annular bearing and a driving device;
the annular bearing is arranged on the base, a through hole is formed in the middle of the annular bearing, and the annular bearing can rotate around the longitudinal axis of the through hole;
the treatment beam component and the imaging component are arranged on the same side end face of the annular bearing and can rotate along with the annular bearing;
the treatment beam assembly and the imaging assembly are located in the same plane;
the driving device is used for driving the annular bearing to rotate;
the driving device includes: a rotor and a stator;
the rotor is annular and sleeved and fixed on the outer side of the annular bearing; a plurality of magnets are arranged on the rotor; the magnets are uniformly arranged along the circumferential direction of the rotor;
the stator is annular, sleeved on the outer side of the rotor and fixedly connected with the base; the stator is provided with a plurality of groups of coils, and the plurality of groups of coils are uniformly arranged along the circumferential direction of the stator.
2. The radiation therapy device of claim 1, wherein the therapy beam assembly comprises: shu Liuchan, a field shaping unit and an imaging unit;
the Shu Liuchan generating unit and the imaging unit are oppositely arranged on the same side end face of the annular bearing about the longitudinal axis of the through hole;
the portal forming unit is arranged between the Shu Liuchan raw unit and the imaging unit and is connected with the Shu Liuchan raw unit;
the Shu Liuchan generating unit is used for generating rays for treatment;
the field shaping unit is used for blocking useless rays and enabling the useful rays to form a required treatment beam in a specific shape;
the imaging unit is used for receiving rays of the treatment beam passing through the portal forming unit.
3. The radiation therapy device of claim 1, wherein the imaging assembly comprises: the device comprises an X-ray unit, a high-voltage generation unit, a detection unit, a shielding body and a phase establishment unit;
the X-ray unit and the detection unit are oppositely arranged on the same side end face of the annular bearing relative to the longitudinal axis of the through hole;
the shielding body is arranged on one side of the detection unit, which is close to the X-ray unit;
the high voltage generating unit is connected with the X-ray unit;
the phase establishing unit is connected with the detecting unit;
the X-ray unit is used for generating X-rays;
the high voltage generating unit is used for providing high voltage for the X-ray unit so as to generate X-rays;
the detection unit is used for receiving the X-rays;
the shielding body is used for being opened or closed along one side or two sides of the detection unit so as to expose or shield the detection unit;
the phase establishing unit is used for carrying out data acquisition and reconstruction according to the X-rays received by the detection unit and outputting reconstructed image data.
4. The radiation therapy device of claim 3, wherein:
the detection unit is internally provided with a plurality of detectors which are sequentially arranged into an arc shape.
5. The radiation therapy device of claim 1, wherein the drive device further comprises: a conductive slip ring assembly;
the conductive slip ring assembly is arranged on the annular bearing and is used for providing power for components on the radiotherapy device and transmitting control signals and data.
6. The radiation therapy device defined in claim 5, wherein the conductive slip ring assembly comprises: an annular cylinder, a brush assembly, and a plurality of conductive loops;
one end of the annular cylinder is connected with one end of the annular bearing;
the plurality of conductive loops are sleeved on the outer side surface of the annular cylinder body, and the plurality of conductive loops are arranged in parallel;
one end of the electric brush component is connected with the base of the frame, and the other end of the electric brush component is respectively in sliding contact with the conductive loops.
7. The radiation therapy device defined in claim 5, wherein the conductive slip ring assembly comprises: a brush assembly and a plurality of conductive loops;
the plurality of conductive loops are concentric circles with different radiuses respectively and are arranged on the side surface of one end of the annular bearing in a way of encircling the rotation center of the annular bearing in turn;
one end of the electric brush component is fixedly connected with the base of the frame, and the other end of the electric brush component is respectively in sliding contact with the conductive loops.
8. The radiation therapy device as claimed in claim 1, further comprising: a controller;
the controller is respectively connected with the treatment beam assembly, the imaging assembly and the driving device and is used for respectively outputting control signals to the treatment beam assembly, the imaging assembly and the driving device;
the therapeutic beam assembly, the imaging assembly and the driving device respectively generate corresponding motions according to the received control signals.
9. The radiation therapy device of claim 1, further comprising: a housing;
the housing, treatment beam assembly, and imaging assembly are all disposed within the enclosure.
10. The radiation therapy device of claim 9, further comprising: a patient support assembly;
the patient support assembly is disposed outside the housing with a support surface of the patient support assembly movable back and forth along a longitudinal axis in the through bore of the annular bearing.
11. The radiation therapy device of claim 9, further comprising: a heat dissipation assembly;
the heat dissipation assembly includes: a heat exchanger and a radiator; the heat exchanger is connected with the radiator through a pipeline;
the heat exchanger is arranged in the housing and is used for outputting heat in the housing to the radiator through a pipeline;
the radiator is used for radiating heat to the outside of the housing.
12. The radiation therapy device of claim 9, further comprising: a heat dissipation assembly;
the heat dissipation assembly includes: a heat exchanger and an outdoor unit; the heat exchanger is connected with the outdoor unit through a pipeline;
the heat exchanger is arranged on the housing and is used for outputting heat in the housing to the outdoor unit through a pipeline;
the outdoor unit is used for radiating heat outdoors.
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| CN202320905304.7U CN219630465U (en) | 2023-04-20 | 2023-04-20 | Radiotherapy device |
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| CN202320905304.7U CN219630465U (en) | 2023-04-20 | 2023-04-20 | Radiotherapy device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116459458A (en) * | 2023-04-20 | 2023-07-21 | 中核粒子医疗科技有限公司 | Radiotherapy device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116459458A (en) * | 2023-04-20 | 2023-07-21 | 中核粒子医疗科技有限公司 | Radiotherapy device |
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