CN209108436U

CN209108436U - Cage radiotherapy unit

Info

Publication number: CN209108436U
Application number: CN201820136559.0U
Authority: CN
Inventors: 戴建荣; 牛传猛; 李明辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-01-26
Filing date: 2018-01-26
Publication date: 2019-07-16
Anticipated expiration: 2028-01-26

Abstract

The utility model discloses a kind of cage radiotherapy units, are related to radiotherapy equipment technical field, including the therapeutic bed driven by two-dimension moving platform and controller, supporting mechanism, rotating mechanism, sliding equipment, ray generating mechanism；Controller and ray generating mechanism communicate to connect；Sliding equipment is set on supporting mechanism by rotating mechanism, and ray generating mechanism is slidably set on sliding equipment；Supporting mechanism includes fixed bracket, and rotating mechanism includes runing rest, and runing rest is rotated on fixed bracket by the driving of servo drive system；Two-dimension moving platform passes through the runing rest and connect with hoistable platform；Sliding equipment includes at least one sliding support, and sliding support is fixed on the runing rest.The utility model can realize that big spatial angle range is quickly accurately treated by the multifreedom motion of ray generating mechanism under the premise of not moving patient；It is designed by the double support of supporting mechanism, improves the rigidity and load capacity of device.

Description

Cage type radiotherapy device

Technical Field

The utility model relates to a radiotherapy equipment technical field, concretely relates to cage radiotherapy device.

Background

As an important means for treating cancer, radiotherapy can utilize rays to enter the inside of a human body and generate ionization with cells in the body, and when ionization energy generated by ionization is large enough, the cells can be killed. With the development of tumor radiotherapy, radiotherapy has gradually advanced to the "three essence" era of precise positioning, precise planning and precise treatment, and the radiotherapy device has wider and wider adaptability and can perform radiotherapy on various parts of human bodies, such as the head, the neck, the chest, the abdomen and the like.

In the current radiotherapy process, because a radioactive source of the radiotherapy device can only rotate along a fixed direction in a two-dimensional plane, the position of the treatment couch needs to be adjusted in a front-back direction, a left-right direction and a top-bottom direction, so that a tumor target area of a patient is positioned in an irradiation area of the radioactive source, and the problems of long adjustment time, poor position precision, low treatment efficiency and the like can occur. When non-coplanar radiotherapy is carried out, the treatment couch is required to be rotated, the imaging system is used for target region position verification, the treatment time is further prolonged, the danger of collision of a radiotherapy device with the treatment couch or the body surface of a patient exists, the optional non-coplanar irradiation angle range is narrow, and the clinical application of the non-coplanar radiotherapy technology is greatly limited. Chinese utility model patent (patent number: ZL201110447735.5) discloses a 4D stereotactic radiotherapy device, which enables an accelerator to perform nodding and head-up actions along with a frame, thereby realizing the adjustment of ray angle on a three-dimensional space and providing greater support for accurate detection and treatment. The Chinese utility model patent (patent number: ZL201410558872.X) discloses a five-degree-of-freedom o-shaped arm radiotherapy system, realizes the five-degree-of-freedom control radiotherapy process, and has high control precision and stability.

The radiotherapy device disclosed in the above patents realizes multi-degree-of-freedom motion of the radioactive source by increasing the degree of freedom of the frame, has a small non-coplanar irradiation angle range, a large system load and a complex structure, is not beneficial to engineering realization, and does not fundamentally solve the problem of collision between the frame and a treatment bed or the body surface of a patient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can realize that wide-angle scope multi freedom shines, load capacity is strong, simple structure, low in manufacturing cost can carry out real-time quick adjustment and can not collide patient's cage radiotherapy device to the radiation position to solve the technical problem that adjustment time among the above-mentioned background is long, the position precision is poor, treatment effeciency is low, easily bump the patient.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a cage type radiotherapy device comprises a treatment couch driven by a two-dimensional motion platform, a controller, a supporting mechanism, a rotating mechanism, a sliding mechanism and a ray generating mechanism; the controller is in communication connection with the ray generating mechanism; the sliding mechanism is rotatably arranged on the supporting mechanism through the rotating mechanism, and the ray generating mechanism is slidably arranged on the sliding mechanism; wherein,

the supporting mechanism comprises a fixed support, the rotating mechanism comprises a rotating support, and the rotating support is driven by a servo driving system to rotate on the fixed support; the two-dimensional motion platform penetrates through the rotating bracket and is connected with the lifting platform;

the sliding mechanism comprises a plurality of sliding supports, the ray generating mechanism is arranged on one of the sliding supports, and the sliding support is fixed on the rotating support. The rotating bracket is provided with a sliding bracket, the sliding bracket is provided with a ray generating mechanism, the rotating bracket can rotate on the fixed bracket under the drive of the servo drive system to drive the sliding bracket to rotate, the rotation of the sliding bracket can drive the ray generating mechanism to rotate, and meanwhile, the ray generating mechanism can also relatively slide on the sliding bracket, thereby completing 360-degree all-dimensional radiotherapy on a patient. The arrangement of a plurality of sliding brackets can be provided with other auxiliary medical equipment, thereby leading the function of the radiotherapy device to be more complete.

Furthermore, the external servo driving system comprises a first servo motor, and the first servo motor is in transmission connection with the rotating support. The first servo motor is in transmission connection with the rotating support so as to drive the rotating support to rotate on the fixed support.

Furthermore, the number of the fixed supports is two, the fixed supports are respectively a first fixed support and a second fixed support, and the first fixed support and the second fixed support are arranged on the same horizontal plane in parallel relatively; and a first mounting hole and a second mounting hole with coincident central axes are respectively arranged on the first fixing support and the second fixing support. Make whole device more firm through the relative first fixed bolster and the second fixed bolster that sets up, use safe and reliable more.

Furthermore, the number of the rotating supports is two, the rotating supports are respectively a first rotating support and a second rotating support, and the first rotating support and the second rotating support are respectively arranged in the first mounting hole and the second mounting hole through bearings; the first rotating support and the second rotating support are both of a cylindrical structure. The cylindrical rotating support is arranged in the mounting hole through a bearing, so that the rotating support can rotate in the mounting hole.

Furthermore, the first servo motor is fixed on the first fixed support and is connected with the first rotating support through a transmission belt; or,

the first servo motor is fixed on the second fixing support and connected with the second rotating support through a transmission belt.

Furthermore, the sliding supports are provided with racks and driving mechanisms matched with the racks. The driving mechanism is matched with the rack, so that the driving mechanism can complete relative sliding on the sliding bracket through the meshing of the rack.

Furthermore, the driving mechanism comprises a servo motor and a driving sliding block, the servo motor is fixed on the driving sliding block, the servo motor drives the driving sliding block to slide on the sliding support through the matching of the driving gear and the rack, and the servo motor is in communication connection with the controller.

Furthermore, the ray generating mechanism comprises a ray source and a collimator, the ray source is connected with the collimator, the ray source is fixed on a driving sliding block of the sliding support, and a ray detecting plate or a ray stopper is arranged on the driving sliding block of the sliding support, on which the ray generating mechanism is arranged.

Furthermore, the sliding support is an arc beam with the circle center positioned on the central axis of the first mounting hole.

Furthermore, the lifting platform comprises a first lifting platform and a second lifting platform, the first lifting platform is arranged on the left side of the first fixed support, and the second lifting platform is arranged on the right side of the second fixed support; and two ends of the two-dimensional motion platform penetrate through the first rotating bracket and the second rotating bracket to be connected with the first lifting platform and the second lifting platform respectively.

The utility model discloses beneficial effect: the radiation therapy device has the advantages that the radiation therapy device can irradiate a space large solid angle range of a target area of a patient by the ray generating mechanism through the cage type structure design, the irradiation of the space large solid angle range of the patient is realized on the premise that the patient is not moved, the rigidity and the loading capacity of the radiation therapy device can be greatly improved by adopting the double fixing supports and the cross beam supporting structure, a radioactive source with larger self weight can be driven to carry out high-precision space multi-degree-of-freedom motion, the problem of collision with the patient does not exist, various imaging devices can be flexibly carried, and advanced radiotherapy technologies such as IMRT, VMAT, non-coplanar IMRT, non-coplanar VMAT, 4 pi radiotherapy, self-adaptive radiotherapy and the like; the patient target area can be quickly and accurately positioned by matching the two-dimensional motion platform, the sliding mechanism and the rotating mechanism, and the treatment effect is obvious.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a three-dimensional structure diagram of a cage type radiation therapy device according to an embodiment of the present invention.

Fig. 2 is a schematic view illustrating a cage type radiotherapy device according to an embodiment of the present invention in a use state.

Wherein: 705-two dimensional motion platform; 704-a treatment couch; 100-a support mechanism; 200-a rotation mechanism; 300-a sliding mechanism; 500-ray generation means; 600-an imaging device; 110-a first fixed support; 120-a second fixed support; 210-a first rotating gantry; 220-a second rotating bracket; 211. 221-a bearing; 301-a first sliding bracket; 302-a second sliding bracket; 303-a third sliding support; 304-a fourth sliding bracket; 111-a first mounting hole; 121-a second mounting hole; 701-a first lifting platform; 702-a second lifting platform; 222-a servo motor I; 1-a servo motor; 2-driving the slide block; 501-ray source; 502-a collimator; 601-a signal transmitting unit; 602-a signal receiving unit; 800-patient; 900-treatment center; 224-a conveyor belt; 503-ray detection plate; 130-base.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by way of the drawings are exemplary only for the purpose of explaining the present invention and should not be construed as limiting the present invention.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It is to be understood that "connected" or "coupled" as used herein may include wirelessly connected or coupled, and that the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

To facilitate understanding of the present invention, the present invention will be further explained with reference to specific embodiments in conjunction with the accompanying drawings, and the specific embodiments do not constitute limitations of the embodiments of the present invention.

Fig. 1 is a three-dimensional structure diagram of a cage type radiotherapy device according to an embodiment of the present invention, and fig. 2 is a schematic diagram of a usage state of the cage type radiotherapy device according to an embodiment of the present invention.

It will be appreciated by those skilled in the art that the drawings are merely schematic representations of embodiments and that elements shown in the drawings are not necessarily required to practice the invention.

As shown in fig. 1 to 2, the embodiment of the present invention provides a cage type radiotherapy device, which comprises a treatment couch 704 driven by a two-dimensional motion platform 705, a controller, a supporting mechanism 100, a rotating mechanism 200, a sliding mechanism 300, a ray generating mechanism 500, and an imaging device 600; the controller is respectively in communication connection with the ray generating mechanism 500 and the imaging device 600; the sliding mechanism 300 is rotatably disposed on the supporting mechanism 100 through the rotating mechanism 200, the ray generating mechanism 500 is slidably disposed on the sliding mechanism 300, and the imaging device 600 is slidably disposed on the sliding mechanism 300; wherein,

the supporting mechanism 100 comprises a first fixed bracket 110 and a second fixed bracket 120; the first fixing bracket 110 and the second fixing bracket 120 are arranged on the same horizontal plane in a relatively parallel manner;

the rotating mechanism 200 comprises a first rotating bracket 210 and a second rotating bracket 220; the first rotating bracket 210 and the second rotating bracket 220 are movably arranged in the first fixing bracket 110 and the second fixing bracket 120 respectively;

the sliding mechanism 300 includes a first sliding support 301, a second sliding support 302, a third sliding support 303, and a fourth sliding support 304, and both ends of the first sliding support 301, the second sliding support 302, the third sliding support 303, and the fourth sliding support 304 are respectively fixed to the first rotating support 210 and the second rotating support 220.

The rotating mechanism 200 is used for driving the sliding mechanism 300 to rotate around the treatment couch 704;

the imaging device 600 is configured to slide on the sliding mechanism 300, perform target imaging on a diseased target area of a patient, and obtain a position signal of the diseased target area in real time according to the target imaging.

The controller is configured to adjust the position of the radiation generating mechanism 500 on the sliding mechanism 300 in real time according to the position signal, and the radiation generating mechanism 500 is configured to irradiate the target area of the patient with radiation.

In a specific embodiment of the present invention, the first fixing bracket 110 and the second fixing bracket 120 are respectively provided with a first mounting hole 111 and a second mounting hole 121, and central axes of the first mounting hole 111 and the second mounting hole 121 coincide with each other.

The first rotating bracket 210 and the second rotating bracket 220 are respectively arranged in the first mounting hole 111 and the second mounting hole 121 through bearings 211 and 221; the first rotating bracket 210 and the second rotating bracket 220 are both cylindrical structures.

In practical applications, the arrangement of the first rotating bracket 210 and the second rotating bracket 220 is not limited by the above arrangement, and the first rotating bracket 210 and the second rotating bracket 220 may also be movably disposed on the first fixed bracket 110 and the second fixed bracket 120 by other manners.

In a specific embodiment of the present invention, the first sliding bracket 301 and the third sliding bracket 303 are disposed opposite to each other, and the second sliding bracket 302 and the fourth sliding bracket 304 are disposed opposite to each other.

In a specific embodiment of the present invention, the two ends of the two-dimensional moving platform 705 pass through the first rotating bracket 210 and the second rotating bracket 220 and are respectively connected to the first lifting platform 701 and the second lifting platform 702, the second rotating bracket 220 is connected to the first servo motor 222 through the transmission belt 224, and the first servo motor 222 is fixed on the second fixing bracket 120.

In an embodiment of the present invention, the first sliding bracket 301, the second sliding bracket 302, the third sliding bracket 303, and the fourth sliding bracket 304 are arc beam structures with a center located on the central axis of the first mounting hole 111.

In a specific embodiment of the present invention, the first sliding bracket 301, the second sliding bracket 302, the third sliding bracket 303, and the fourth sliding bracket 304 are all provided with a rack; the first sliding support 301 and the third sliding support 303 are of a double-support beam structure, and the second sliding support 302 and the fourth sliding support 304 are of a single-support beam structure; and driving mechanisms are arranged on the first sliding support 301, the second sliding support 302, the third sliding support 303 and the fourth sliding support 304.

In a specific embodiment of the present invention, the driving mechanism includes a servo motor 1 and a driving slider 2, the servo motor 1 is fixed on the driving slider 2, the servo motor 1 drives the driving slider 2 to relatively slide on the first sliding support 301, the second sliding support 302, the third sliding support 303 and the fourth sliding support 304 through the cooperation of the driving gear and the rack; the servo motor 1 is in communication connection with the controller.

In a specific embodiment of the present invention, the radiation generating mechanism 500 is disposed on the first sliding support 301, the radiation generating mechanism 500 includes a radiation source 501 and a collimator 502, the radiation source 501 and the collimator 502 are respectively fixed on two sides of the driving slider 2 of the first sliding support 301, and a radiation detecting plate 503 is disposed on the driving slider 2 of the third sliding support 303.

In a specific embodiment of the present invention, the imaging device 600 includes a signal transmitting unit 601 and a signal receiving unit 602; the signal emitting unit 601 is disposed on the driving slider 2 on the second sliding bracket 302, and the signal receiving unit 602 is disposed on the driving slider 2 on the fourth sliding bracket 304.

In a specific embodiment of the present invention, the radiation detection plate 503 is an MV-level detection plate, a KV-level detection plate, or a radiation blocker; the radiation source 501 is one of an x-ray source generated by a linear accelerator, an electron beam radiation source, or a gamma ray source generated by radioactive substances, and the imaging device 600 is one of CT, cone beam CT, or MRI.

As shown in fig. 2, the utility model discloses when specifically using, supporting mechanism 100 includes first fixed bolster 110, second fixed bolster 120, first fixed bolster 110 and second fixed bolster 120 are fixed to be set up on base 130, base 130 is fixed to be set up subaerial, it has the cylindric first mounting hole 111 of cavity to open on the first fixed bolster 110, it has the cylindric second mounting hole 121 of cavity to open on the second fixed bolster 120, first mounting hole 111 and the coincidence of second mounting hole 121 center pin can guarantee that rotary mechanism drives sliding mechanism and winds the center pin steady rotation.

It will be appreciated that the cage radiation therapy device may not include a base 130, and in such cases, the first and second stationary supports 130 are fixedly disposed directly on the ground.

The rotating mechanism 200 includes a first rotating bracket 210 and a second rotating bracket 220. The first rotating bracket 210 is rotatably disposed on the first fixing bracket 110, the second rotating bracket 220 is rotatably disposed on the second fixing bracket 120, and the first rotating bracket 210 and the second rotating bracket 220 are hollow.

It is understood that the first rotating bracket 210 may be disposed on the first fixing bracket 110 through a bearing 211, and the second rotating bracket 220 may be disposed on the second fixing bracket 120 through a bearing 221.

The sliding mechanism 300 includes a first sliding support 301, a second sliding support 302, a third sliding support 303, and a fourth sliding support 304, and two ends of each sliding support are respectively fixedly connected to the first rotating support 210 and the second rotating support 220.

The first sliding support 301, the second sliding support 302, the third sliding support 303 and the fourth sliding support 304 are arc beams, and the centers of the arcs are located on the central axes of the two fixed rack mounting holes.

The first sliding bracket 301 and the third sliding bracket 303 are of a double-support beam structure parallel to each other, and the second sliding bracket 302 and the fourth sliding bracket 304 are of a single-support beam structure.

The first sliding bracket 301 and the third sliding bracket 303 are installed in parallel and opposite to each other, the second sliding bracket 302 and the fourth sliding bracket 304 are installed in parallel and opposite to each other, and the first sliding bracket 301 and the fourth sliding bracket 304 are installed orthogonally, i.e. the included angle between the two is 90 °.

It will be appreciated that the slide mechanism 300 may further include more slide supports, such as a fifth slide support, a sixth slide support, to facilitate carrying of the cage radiation treatment device with other associated equipment.

The radiation generating mechanism 500 includes a radiation source 501 and a collimator 502. The radiation source 501 is an x-ray source or an electron beam radiation source generated by a linear accelerator, and can also be a gamma ray source generated by radioactive substances, and the collimator 502 can rotate around a beam central axis.

It is understood that the radiation generating mechanism 500 may further include a radiation detecting plate 503, and the radiation detecting plate 503 is slidably disposed on the third sliding bracket 303; the ray detection plate 503 may be an MV-class detection plate or a KV-class detection plate. The radiation detection plate 503 may also be a radiation blocker, and the automatic control technology can control the radiation source 501 and the radiation blocker to move synchronously, so that a bobbin of a radiation beam generated by the radiation source 501 always passes through the geometric center of the radiation blocker.

The imaging device 600 may be a CT, cone beam CT, or MRI; the imaging apparatus 600 includes a signal transmitting unit 601 and a signal receiving unit 602. The signal transmitting unit 601 is slidably disposed on the second sliding bracket 302, and the signal receiving unit 602 is slidably disposed on the fourth sliding bracket 304.

The first lifting platform 701 and the second lifting platform 702 are fixedly arranged on the base 130 and are respectively positioned at two sides of the first fixing support and the second fixing support, the base 130 is fixedly arranged on the ground, the treatment bed 704 is fixed on the two-dimensional motion platform 705, two ends of the two-dimensional motion platform 705 penetrate through the first sliding support 210 and the second sliding support 220 to span between the first lifting platform 701 and the second lifting platform 702, the treatment bed 704 realizes horizontal motion through the two-dimensional motion platform 705, the two-dimensional motion platform 705 realizes vertical lifting of the platform and the second lifting platform through first sound, and the adjustment of the position of a patient is realized through the two-dimensional motion platform 705 and the lifting platform.

It is understood that the first lifting platform 701 and the second lifting platform 702 may also be fixedly disposed directly on the ground.

The patient 800 is fixed on the treatment couch 704, and the center of the target area of the patient 800 coincides with the treatment center 900 of the cage type radiotherapy device by the up-down movement of the up-down platform and the front-back and left-right movement of the two-dimensional movement platform 705.

The imaging device 600 can automatically image the target area of the patient 800, verify the correctness of the position of the target area, and the radiation generating mechanism 500 can automatically move to the irradiation position set by the planning system to irradiate the radiation aiming at the target area of the patient 800.

In the treatment process, imaging device 600 can image the target area of patient 800 in real time, and the real-time position of the target area obtained by tracking the target area imaging sends the position information to the controller, and the controller can automatically adjust the ray irradiation angle of the ray generation mechanism 500 according to the position information, so that dynamic tracking radiotherapy or self-adaptive radiotherapy on the tumor target area is realized.

To sum up, the utility model discloses an operation effect is, through cage structural design, realize that the ray generating mechanism shines to the big solid angle scope in space of patient target area, realize shining to the big solid angle scope of patient under the prerequisite of unmovable patient, through adopting two fixed bolsters and crossbeam bearing structure, can improve the rigidity of radiotherapy device by a wide margin and take load capacity, can drive the radiation source of great dead weight and carry out high accuracy space multi freedom motion, and the problem of patient's collision does not exist, can carry on various imaging device in a flexible way, be favorable to developing advanced radiotherapy techniques such as IMRT based on image guide, VMAT, non-coplane IMRT, non-coplane VMAT, 4 pi radiotherapy and self-adaptation radiotherapy; the patient target area of the patient is accurately positioned by matching the two-dimensional motion platform, the sliding mechanism and the rotating mechanism, and the treatment effect is obvious.

Those of ordinary skill in the art will understand that: the components in the device in the embodiments of the present invention may be distributed in the device in the embodiments according to the description of the embodiments, and may be correspondingly changed in one or more devices different from the embodiments. The components of the above embodiments may be combined into one component, or may be further divided into a plurality of sub-components.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A cage type radiotherapy device comprises a treatment bed driven by a two-dimensional motion platform, and is characterized in that: the device also comprises a controller, a supporting mechanism, a rotating mechanism, a sliding mechanism and a ray generating mechanism; the controller is in communication connection with the ray generating mechanism; the sliding mechanism is rotatably arranged on the supporting mechanism through the rotating mechanism, and the ray generating mechanism is slidably arranged on the sliding mechanism; wherein,

the sliding mechanism comprises a plurality of sliding supports, the ray generating mechanism is arranged on one of the sliding supports, and the sliding support is fixed on the rotating support.

2. The cage radiation therapy device of claim 1, wherein: the external servo driving system comprises a first servo motor, and the first servo motor is in transmission connection with the rotating support.

3. The cage radiation therapy device of claim 2, wherein: the number of the fixed supports is two, the fixed supports are respectively a first fixed support and a second fixed support, and the first fixed support and the second fixed support are arranged on the same horizontal plane in a relatively parallel mode; and a first mounting hole and a second mounting hole with coincident central axes are respectively arranged on the first fixing support and the second fixing support.

4. The cage radiation therapy device of claim 3, wherein: the number of the rotating supports is two, the rotating supports are respectively a first rotating support and a second rotating support, and the first rotating support and the second rotating support are respectively arranged in the first mounting hole and the second mounting hole through bearings; the first rotating support and the second rotating support are both of a cylindrical structure.

5. The cage radiation therapy device of claim 4, wherein: the first servo motor is fixed on the first fixed support and is connected with the first rotating support through a transmission belt; or,

6. The cage radiation therapy device of claim 4, wherein: and the sliding supports are respectively provided with a rack and a driving mechanism matched with the rack.

7. The cage radiation therapy device of claim 6, wherein: the driving mechanism comprises a servo motor and a driving sliding block, the servo motor is fixed on the driving sliding block, the servo motor drives the driving sliding block to slide on the sliding support through the matching of the driving gear and the rack, and the servo motor is in communication connection with the controller.

8. The cage radiation therapy device of claim 7, wherein: the ray generating mechanism comprises a ray source and a collimator, the ray source is connected with the collimator, the ray source is fixed on a driving sliding block of a sliding support, a ray detection plate or a ray stopper is arranged on the sliding support opposite to the sliding support of the ray generating mechanism, and the ray detection plate or the ray stopper is arranged on the driving sliding block.

9. The cage radiation therapy device of claim 8, wherein: the sliding support is an arc beam with the circle center positioned on the central axis of the first mounting hole.

10. The cage radiation therapy device of any one of claims 4-8, wherein: the lifting platform comprises a first lifting platform and a second lifting platform, the first lifting platform is arranged on the left side of the first fixed support, and the second lifting platform is arranged on the right side of the second fixed support; and two ends of the two-dimensional motion platform penetrate through the first rotating bracket and the second rotating bracket and respectively communicate with the first lifting platform and the second lifting platform.