A multifunctional gamma knife treatment device with cone beam CT detection

Abstract

The present invention provides a multifunctional gamma knife treatment device with cone-beam CT detection. The multifunctional gamma knife treatment device with cone-beam CT detection is characterized in that the multifunctional gamma knife treatment device includes a cone-beam CT detection device and a gamma knife treatment device. The cone-beam CT detection device is arranged in front of the gamma knife treatment device. The cone-beam CT detection device includes a cone-beam CT detection frame, a head-body dual-purpose imaging tube device, and an imaging device detector. The head-body dual-purpose imaging tube device and the imaging device detector are symmetrically arranged on the cone-beam CT detection frame. The cone-beam CT detection frame includes a swivel support mechanism and a frame flip mechanism. The swivel support mechanism is flip-connected to the frame flip mechanism. By arranging the cone-beam CT detection device in front of the gamma knife treatment device and utilizing the flipping of the cone-beam CT detection device, both cone-beam CT detection and gamma knife treatment can be performed, thereby achieving multifunctional combined treatment and detection.

Description

Technical Field

[0001] The invention relates to the technical field of radiotherapy equipment manufacturing, in particular to a multifunctional gamma knife treatment equipment with cone beam CT detection. Background Art

[0002] Gamma Knife is the primary treatment method in stereotactic radiosurgery. Based on the principles of stereotactic geometry, it selectively targets abnormal or diseased tissue within the body. It then delivers a single, high-dose, focused irradiation using cobalt-60 gamma rays, resulting in localized necrosis or functional changes, ultimately curing the disease. Existing Gamma Knife devices require patients to undergo pre-treatment examinations in separate testing rooms and with other equipment before proceeding with the device, creating unnecessary hassles during both examination and treatment. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a multifunctional gamma knife treatment device with cone beam CT detection, which can perform cone beam CT detection and gamma knife treatment.

[0004] To solve the above technical problems, an embodiment of the present invention provides a multifunctional gamma knife treatment device with cone-beam CT detection, wherein the multifunctional gamma knife treatment device with cone-beam CT detection includes a cone-beam CT detection device and a gamma knife treatment device, wherein the cone-beam CT detection device is arranged in front of the gamma knife treatment device, and the cone-beam CT detection device includes a cone-beam CT detection frame, a head-body dual-purpose imaging tube device, and an imaging device detector, wherein the head-body dual-purpose imaging tube device and the imaging device detector are symmetrically arranged on the cone-beam CT detection frame, and the cone-beam CT detection frame includes a slewing support mechanism and a frame flipping mechanism, and the slewing support mechanism is flip-connected to the frame flipping mechanism.

[0005] Preferably, the frame flipping mechanism includes a flipping bracket, a flipping stretching device and a first rotary support, the flipping stretching device is arranged on a side of the flipping bracket away from the rotary support mechanism, the flipping bracket is connected to the rotary support mechanism, the bottom of the flipping bracket is connected to the first rotary support, the top of the flipping bracket is hinged to the top of the flipping stretching device, and the bottom of the flipping stretching device is hinged to the ground.

[0006] Preferably, the rack flip mechanism is provided with a flip positioning support column, the flip positioning support column is arranged on the side of the rotary support mechanism away from the flip bracket, the rotary support mechanism is provided with a rotary support mechanism support column, and the position of the rotary support mechanism support column corresponds to the flip positioning support column.

[0007] Preferably, the slewing support mechanism includes a second slewing support and a slewing drive device, the slewing drive device is rotationally connected to the second slewing support, and the slewing drive device is arranged on the flip bracket.

[0008] Preferably, the head-body dual-purpose imaging tube device includes a tube and a head-body dual-purpose beam spotter, the tube and the head-body dual-purpose beam spotter are connected, the head-body dual-purpose beam spotter includes a beam spotter carrying plate and a beam spotter switching mechanism, the beam spotter switching mechanism is rotatably connected to the beam spotter carrying plate, the beam spotter carrying plate is provided with a head beam spotter and a body beam spotter, the beam spotter carrying plate is also provided with a shield, the head beam spotter, the body beam spotter and the shield are arranged in triangular correspondence, and the light outlet of the tube corresponds to the center positions of the head beam spotter, the body beam spotter and the shield respectively.

[0009] Preferably, the head-body dual-purpose beam spotter is provided with a rotation limiting mechanism, the rotation limiting mechanism includes a limiting arm and a stop block, the limiting arm is fixedly connected to the beam spotter switching mechanism, the stop block is fixedly connected to a side of the beam spotter carrier plate close to the tube, and the rotation limiting mechanism includes a head beam spotter rotation limiting mechanism and a body rotation limiting mechanism.

[0010] Preferably, it is characterized in that a limiting buffer mechanism is provided at the corresponding position of the limiting arm and the block, and the limiting buffer mechanism includes a mechanism housing, an adjusting plug, a buffer connecting rod and a buffer spring, the buffer connecting rod is inserted into the mechanism housing, the buffer spring is sleeved on the buffer connecting rod, and the adjusting plug is provided above the buffer spring and is elastically reset connected to the mechanism housing and the buffer connecting rod.

[0011] Preferably, the imaging device detector includes a detector and an imaging device detector adjustment mechanism, the imaging device detector adjustment mechanism is connected to the slewing support mechanism, the imaging device detector adjustment mechanism includes a mechanism upper plate, a mechanism lower plate, a translational motion mechanism and an angle adjustment mechanism, the translational motion mechanism is connected to the mechanism upper plate, the mechanism upper plate and the mechanism lower plate are connected through the angle adjustment mechanism, and the translational motion mechanism is connected to the detector.

[0012] Preferably, the angle adjustment mechanism includes a screw, a nut and a spherical gasket, the top of the screw is fixedly connected to the upper plate of the mechanism, the screw passes through the lower plate of the mechanism and is connected to the lower plate of the mechanism through the nut and the spherical gasket, the lower plate of the mechanism is provided with a connecting hole, the nut includes a first nut and a second nut, the spherical gasket includes a first spherical gasket and a second spherical gasket, the screw passes through the connecting hole, the first spherical gasket is arranged above the lower plate of the mechanism, the first nut is arranged above the first spherical gasket, the second spherical gasket is arranged below the lower plate of the mechanism, and the second nut is arranged below the second spherical gasket, the angle adjustment mechanism includes at least four groups of screws, nuts and spherical gaskets, the at least four groups of screws, nuts and spherical gaskets are evenly arranged on the upper plate and the lower plate of the mechanism, and the translational motion mechanism and the angle adjustment mechanism are arranged between the upper plate and the lower plate of the mechanism.

[0013] Preferably, the translation motion mechanism includes a translation motor and a guide rail. The translation motor passes through the upper plate of the mechanism and is connected to the detector. The upper plate of the mechanism is provided with a guide rail. The bottom of the detector is slidingly connected to the upper plate of the mechanism through the guide rail. The translation motor is fixedly connected to the bottom of the upper plate of the mechanism. The translation motor is a ball screw motor, and the guide rail is a cross-roller linear guide.

[0014] The beneficial effects of the above technical solution of the present invention are as follows:

[0015] In the above scheme, by arranging the cone beam CT detection device in front of the gamma knife treatment device and utilizing the flipping of the cone beam CT detection device, both cone beam CT detection and gamma knife treatment can be realized, thereby realizing multifunctional combined treatment and detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a multifunctional gamma knife treatment device with cone beam CT detection according to an embodiment of the present invention;

[0017] Figure 2 Schematic diagram of the structure of a cone-beam CT detection device according to an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the flipping of a cone-beam CT detection device according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram showing the connection of a dual-purpose imaging tube device for a cone-beam CT detection device according to an embodiment of the present invention;

[0020] Figure 5 This is a diagram showing the connection of an imaging device detector to a cone-beam CT detection apparatus according to an embodiment of the present invention;

[0021] Figure 6This is a schematic structural diagram of a dual-purpose imaging tube device for a head and body according to an embodiment of the present invention;

[0022] Figure 7 This is a schematic structural diagram of a dual-purpose imaging tube device for a head and body according to an embodiment of the present invention;

[0023] Figure 8 This is a cross-sectional schematic diagram of the position limiting and buffering mechanism of the head-body dual-purpose imaging tube device according to an embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the detector structure of an imaging device according to an embodiment of the present invention;

[0025] Figure 10 This is a schematic diagram of the detector structure of an imaging device according to an embodiment of the present invention;

[0026] Figure 11 This is an enlarged view of the details of the detector of the imaging device according to an embodiment of the present invention.

[0027] [Description of main component symbols]

[0028] Cone-beam CT detection device 101; Gamma Knife treatment device 102; Cone-beam CT detection gantry 103; Head-body dual-purpose imaging tube device 104; Imaging device detector 105; Rotary support mechanism 106; Gear tilt mechanism 107; Tilt bracket 108; Tilt stretching device 109; First rotary support 110; Tilt positioning support column 111; Rotary support mechanism support column 112; Second rotary support 113; Rotary drive device 114;

[0029] Tube 201; dual-purpose beam splitter 202; beam splitter carrier 203; beam splitter switching mechanism 204; head beam splitter 205; body beam splitter 206; shield 207; rotation limiting mechanism 208; limiting arm 209; stopper 210; limiting buffer mechanism 211; mechanism housing 212; adjustment plug 213; buffer connecting rod 214; buffer spring 215; tube orientation adjustment mechanism 216; dual-purpose beam splitter orientation adjustment mechanism 217;

[0030] Mechanism upper plate 301 ; mechanism lower plate 302 ; translation mechanism 303 ; angle adjustment mechanism 304 ; detector 305 ; fixing bracket 306 ; screw 307 ; nut 308 ; spherical gasket 309 ; translation motor 310 ; guide rail 311 . DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0032] like Figure 1 and 2As shown, an embodiment of the present invention provides a multifunctional gamma knife treatment device with cone-beam CT detection. The multifunctional gamma knife treatment device with cone-beam CT detection includes a cone-beam CT detection device 101 and a gamma knife treatment device 102. The cone-beam CT detection device 101 is arranged in front of the gamma knife treatment device 102. The cone-beam CT detection device 101 includes a cone-beam CT detection gantry 103, a head-body dual-purpose imaging tube device 104, and an imaging device detector 105. The head-body dual-purpose imaging tube device 104 and the imaging device detector 105 are symmetrically arranged on the cone-beam CT detection gantry 103. The cone-beam CT detection gantry 103 includes a slewing support mechanism 106 and a gantry flip mechanism 107. The slewing support mechanism 106 is flipably connected to the gantry flip mechanism 107.

[0033] The Gamma Knife treatment device 102 can be a dual-use Gamma Knife treatment device for both the head and the body, and the Cone Beam CT Detection Device 101 can be positioned between the treatment couch and the Gamma Knife treatment device 102. During a Cone Beam CT scan, the Cone Beam CT Detection Device 101 flips over and falls, and the treatment couch advances to the Cone Beam CT Detection Device 101 for the Cone Beam CT scan. When Gamma Knife treatment is required, the treatment couch returns to its initial position, the Cone Beam CT Detection Device 101 is retracted, and the treatment couch advances to the position of the Gamma Knife treatment device 102.

[0034] The multifunctional gamma knife treatment device with cone beam CT detection in an embodiment of the present invention can realize both cone beam CT detection and gamma knife treatment by arranging the cone beam CT detection device in front of the gamma knife treatment device and utilizing the flipping of the cone beam CT detection device, thereby realizing multifunctional combined treatment and detection.

[0035] Preferably, the rack flip mechanism 107 includes a flip bracket 108, a flip stretching device 109, and a first swivel support 110. The flip stretching device 109 is disposed on a side of the flip bracket 108 away from the swivel support mechanism 106. The flip bracket 108 is connected to the swivel support mechanism 106. The bottom of the flip bracket 108 is connected to the first swivel support 110. The top of the flip bracket 8 is hinged to the top of the flip stretching device 109, and the bottom of the flip stretching device 109 is hinged to the ground. The rack flip mechanism 107 is provided with a flip positioning support column 111, which is disposed on a side of the swivel support mechanism 106 away from the flip bracket 108. The swivel support mechanism 107 is provided with a swivel support mechanism support column 112, the position of which corresponds to the flip positioning support column 111.

[0036] The slewing support mechanism 106 includes a second slewing support 113 and a slewing drive device 114 . The slewing drive device 114 is rotatably connected to the second slewing support 113 . The slewing drive device 114 is disposed on the tilting bracket 108 .

[0037] The flip stretching device 109 can be an electric cylinder, the first rotary support 110 is fixedly connected to the ground, the second rotary support 113 includes an inner ring and an outer ring, the flip bracket 108 is connected to the inner ring of the second rotary support 113, and the rotary drive device 114 is connected to the outer ring of the second rotary support 113 for rotational driving. Figure 4 and 5 As shown, the head-body dual-purpose imaging tube device 104 and the imaging device detector 105 are connected to the outer ring of the second rotary support 113 through a connecting frame, and the rotary support mechanism support column 112 is fixedly connected to the inner ring of the second rotary support 113.

[0038] like Figure 1 and 3 As shown, when performing cone-beam CT inspection, the flip and stretching device is extended, the first swivel support rotates, the second swivel support flips and falls, the swivel support mechanism support column falls onto the flip positioning support column, and the treatment couch advances to the cone-beam CT inspection device for cone-beam CT inspection. When gamma knife treatment is required, the treatment couch returns to the initial position, the flip and stretching device is retracted, the first swivel support rotates, the second swivel support flips and retracts, the cone-beam CT inspection device is retracted, and the treatment couch advances to the position of the gamma knife treatment device.

[0039] In this embodiment, by setting up a first rotary support, the stability and smoothness of the flip can be guaranteed, which is particularly suitable for the flipping of heavy equipment. The setting of a flip stretching device can provide sufficient force for the flipping. The setting of a flip positioning support column can provide support when the rotary support mechanism falls and perform effective high-precision positioning.

[0040] like Figures 6 to 8 As shown, an embodiment of the present invention is a head-body dual-purpose imaging tube device, which includes a tube 201 and a head-body dual-purpose beam splitter 202. The tube 201 and the head-body dual-purpose beam splitter 202 are connected. The head-body dual-purpose beam splitter 202 includes a beam splitter carrier plate 203 and a beam splitter switching mechanism 204. The beam splitter switching mechanism 204 is rotatably connected to the beam splitter carrier plate 203. The beam splitter carrier plate 203 is provided with a head beam splitter 205 and a body beam splitter 206.

[0041] The beam carrier plate 203 is also provided with a shield 207. The head beam 205, body beam 206 and shield 207 are arranged in a triangular pattern. The light outlet of the tube 201 corresponds to the center of the head beam 205, body beam 206 and shield 207 respectively.

[0042] Among them, the beam carrier plate 203 can be a circular disc, and the beam switching mechanism 204 can be a rotary drive motor. By setting the head beam 205, the body beam 206 and the shield 207, head irradiation, body irradiation and irradiation can be quickly realized, and the function is more comprehensive and safe.

[0043] When head irradiation is required, the beam splitter switching mechanism 204 drives the beam splitter carrier plate 206 to rotate, and the light outlet of the bulb 201 corresponds to the position of the head beam splitter 205. When body irradiation is required, the beam splitter switching mechanism 204 drives the beam splitter carrier plate 206 to rotate, and the light outlet of the bulb 201 corresponds to the position of the body beam splitter 206. When irradiation is not required, the beam splitter switching mechanism 204 drives the beam splitter carrier plate 203 to rotate, and the light outlet of the bulb 201 corresponds to the position of the shield 207.

[0044] The head-body dual-purpose imaging tube device of an embodiment of the present invention can irradiate the head and body by providing a beam beam carrier plate and a beam beam switching mechanism, and arranging a head beam beam and a body beam beam on the beam beam carrier plate, thereby meeting different detection and treatment needs, and can achieve rapid switching, making it more flexible to use.

[0045] The dual-purpose head and body beam splitter 202 is equipped with a rotation limiting mechanism 208. This mechanism includes a limiting arm 209 and a stopper 210. The limiting arm 209 is fixedly connected to the beam splitter switching mechanism 204, and the stopper 210 is fixedly connected to the surface of the beam splitter carrier 203 near the tube 201. The rotation limiting mechanism 208 includes a head beam splitter rotation limiting mechanism and a body rotation limiting mechanism.

[0046] The head light beam rotation limiting mechanism is provided with a first limiting arm and a first stopper, and the body rotation limiting mechanism is provided with a second limiting arm and a second stopper, and the first limiting arm and the second limiting arm have different lengths.

[0047] In this embodiment, by setting a rotation limit mechanism, the beam splitter switching mechanism can quickly position the beam splitter carrier when it rotates, thereby ensuring that the light outlet of the tube corresponds to the rapid switching and position of the head beam splitter, body beam splitter and shield.

[0048] A limit buffer mechanism 211 is provided at a position corresponding to the limit arm 209 and the stopper 210. The limit buffer mechanism 211 includes a mechanism housing 212, an adjustment plug 213, a buffer link 214, and a buffer spring 215. The buffer link 214 is inserted into the mechanism housing 212, and the buffer spring 215 is sleeved on the buffer link 214. The adjustment plug 213 is provided above the buffer spring 215 and is elastically resiliently connected to the mechanism housing 212 and the buffer link 214. Preferably, a connecting thread is provided at the connection between the mechanism housing 212 and the adjustment plug 213, and the mechanism housing 212 and the adjustment plug 213 are connected via the connecting thread.

[0049] In this embodiment, by setting up a limit buffer mechanism, the stability of switching between the head light beam, the body light beam and the shield can be effectively guaranteed. The initial position of the adjustment plug can be adjusted by rotating the adjustment plug with a connecting thread, and the initial length of the buffer spring can be changed. The buffering force of the limit buffer mechanism can be adjusted, thereby improving the limit accuracy and meeting the requirements of different switching speeds.

[0050] The tube 201 includes a tube orientation adjustment mechanism 216, which is connected to the tube 201. The dual-purpose beam splitter 202 includes a dual-purpose beam splitter orientation adjustment mechanism 217, which is fixedly connected to the tube 201 and connected to the beam splitter switching mechanism 202.

[0051] In this example, by setting up an orientation adjustment mechanism, the tube and the beam splitter can be easily adjusted to meet different needs. Those skilled in the art can design the tube orientation adjustment mechanism and the head-body dual-purpose beam splitter orientation adjustment mechanism according to needs.

[0052] like Figure 9 As shown, an imaging device detector of an embodiment of the present invention includes a detector and an imaging device detector adjustment mechanism, the imaging device detector adjustment mechanism includes a mechanism upper plate 301, a mechanism lower plate 302, a translational motion mechanism 303 and an angle adjustment mechanism 304, the translational motion mechanism 303 is connected to the mechanism upper plate 301, the mechanism upper plate 301 and the mechanism lower plate 302 are connected through the angle adjustment mechanism 304, and the translational motion mechanism 303 is connected to the detector 305.

[0053] The translation mechanism 303 and the angle adjustment mechanism 304 may be disposed between the mechanism upper plate 301 and the mechanism lower plate 302. A fixing bracket 306 may be disposed at the bottom of the mechanism lower plate 302.

[0054] The detector adjustment mechanism of the imaging device in the embodiment of the present invention, by providing an upper plate, a lower plate, a translational motion mechanism and an angle adjustment mechanism, can adjust the orientation and angle of the detector while fixing the detector, thereby meeting the needs of different detection and treatment. The horizontal movement of the detector can realize detection of different patient postures.

[0055] like Figure 10 As shown, an embodiment of the present invention provides an imaging device detector adjustment mechanism. The angle adjustment mechanism 304 includes a screw 307, a nut 308, and a spherical washer 309. The top of the screw 304 is fixedly connected to the mechanism upper plate 301. The screw 307 passes through the mechanism lower plate 302 and is connected to the mechanism lower plate 302 via the nut 308 and spherical washer 309. Specifically, the mechanism lower plate 302 is provided with a connecting hole. The nut 7 includes a first nut and a second nut. The spherical washer 309 includes a first spherical washer and a second spherical washer. The screw 308 passes through the connecting hole. The first spherical washer is positioned above the mechanism lower plate 302, the first nut is positioned above the first spherical washer, the second spherical washer is positioned below the mechanism lower plate 302, and the second nut is positioned below the second spherical washer. The diameter of the connecting hole is larger than the diameter of the screw. The spherical washer can be a spherical washer, with the spherical surface of the spherical washer facing the connecting hole.

[0056] The angle adjustment mechanism may include at least four sets of screws 307, nuts 308 and spherical washers 309. The at least four sets of screws 307, nuts 308 and spherical washers 309 are evenly arranged on the upper plate and the lower plate of the mechanism.

[0057] In this embodiment, the angle adjustment mechanism is provided to achieve angle adjustment of the detector and small distance adjustment in the height direction.

[0058] In this embodiment, by providing a screw, a nut and a spherical gasket, the distance between the upper plate and the lower plate of the mechanism can be adjusted by rotating the nut, thereby adjusting the angle of the detector, and the adjustment method and angle are more flexible and accurate.

[0059] like Figure 11 As shown, an embodiment of the present invention provides a detector adjustment mechanism for an imaging device. The translation mechanism 303 includes a translation motor 310 and a guide rail 311. The translation motor 310 passes through the upper plate 301 and is connected to the detector 308. The upper plate 301 is provided with a guide rail 311. The bottom of the detector is slidably connected to the upper plate 301 via the guide rail 311. The translation motor 310 is fixedly connected to the bottom of the upper plate 301. The translation motor 310 is a ball screw motor, and the guide rail 311 is a cross-roller linear guide.

[0060] In this embodiment, the translation motor and the guide rail are provided to facilitate the movement of the detector in the horizontal direction, thereby improving the flexibility of the equipment.

[0061] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A multifunctional gamma knife treatment device with cone beam CT detection, characterized in that: The multifunctional gamma knife treatment device with cone-beam CT detection includes a cone-beam CT detection device and a gamma knife treatment device. The cone-beam CT detection device is arranged in front of the gamma knife treatment device. The cone-beam CT detection device includes a cone-beam CT detection frame, a head-body dual-purpose imaging tube device, and an imaging device detector. The head-body dual-purpose imaging tube device and the imaging device detector are symmetrically arranged on the cone-beam CT detection frame. The cone-beam CT detection frame includes a slewing support mechanism and a frame flip mechanism. The slewing support mechanism is flip-connected to the frame flip mechanism. The rack flip mechanism includes a flip bracket, a flip stretching device and a first slewing support, wherein the flip stretching device is arranged on a side of the flip bracket away from the slewing support mechanism, the flip bracket is connected to the slewing support mechanism, the bottom of the flip bracket is connected to the first slewing support, the top of the flip bracket is hinged to the top of the flip stretching device, and the bottom of the flip stretching device is hinged to the ground; The rack flip mechanism is provided with a flip positioning support column, the flip positioning support column is arranged on the side of the rotary support mechanism away from the flip bracket, the rotary support mechanism is provided with a rotary support mechanism support column, the position of the rotary support mechanism support column corresponds to the flip positioning support column; The slewing support mechanism includes a second slewing support and a slewing drive device. The slewing drive device is rotatably connected to the second slewing support, and the slewing drive device is arranged on the flip bracket.

2. The multifunctional gamma knife treatment device with cone beam CT detection according to claim 1, characterized in that: The head-body dual-purpose imaging tube device includes a tube and a head-body dual-purpose beam splitter, the tube and the head-body dual-purpose beam splitter are connected, the head-body dual-purpose beam splitter includes a beam splitter carrying plate and a beam splitter switching mechanism, the beam splitter switching mechanism is rotatably connected to the beam splitter carrying plate, the beam splitter carrying plate is provided with a head beam splitter and a body beam splitter, the beam splitter carrying plate is also provided with a shield, the head beam splitter, the body beam splitter and the shield are triangularly arranged, and the light outlet of the tube corresponds to the center positions of the head beam splitter, the body beam splitter and the shield respectively.

3. The multifunctional gamma knife treatment device with cone beam CT detection according to claim 2, characterized in that: The head-body dual-purpose beam spotter is provided with a rotation limiting mechanism, which includes a limiting arm and a stop block. The limiting arm is fixedly connected to the beam spotter switching mechanism, and the stop block is fixedly connected to a side of the beam spotter carrier plate close to the tube. The rotation limiting mechanism includes a head beam spotter rotation limiting mechanism and a body rotation limiting mechanism.

4. The multifunctional gamma knife treatment device with cone beam CT detection according to claim 3, characterized in that: A limiting buffer mechanism is provided at the corresponding position of the limiting arm and the block, and the limiting buffer mechanism includes a mechanism housing, an adjusting plug, a buffer connecting rod and a buffer spring. The buffer connecting rod is inserted into the mechanism housing, and the buffer spring is sleeved on the buffer connecting rod. The adjusting plug is provided above the buffer spring and is elastically reset connected to the mechanism housing and the buffer connecting rod.

5. The multifunctional gamma knife treatment device with cone beam CT detection according to claim 1, characterized in that: The imaging device detector includes a detector and an imaging device detector adjustment mechanism, the imaging device detector adjustment mechanism is connected to the rotary support mechanism, the imaging device detector adjustment mechanism includes an upper mechanism plate, a lower mechanism plate, a translational motion mechanism and an angle adjustment mechanism, the translational motion mechanism is connected to the upper mechanism plate, the upper mechanism plate and the lower mechanism plate are connected through the angle adjustment mechanism, and the translational motion mechanism is connected to the detector.

6. The multifunctional gamma knife treatment device with cone beam CT detection according to claim 5, characterized in that: The angle adjustment mechanism includes a screw, a nut and a spherical gasket, the top of the screw is fixedly connected to the upper plate of the mechanism, the screw passes through the lower plate of the mechanism and is connected to the lower plate of the mechanism through the nut and the spherical gasket, the lower plate of the mechanism is provided with a connecting hole, the nut includes a first nut and a second nut, the spherical gasket includes a first spherical gasket and a second spherical gasket, the screw passes through the connecting hole, the first spherical gasket is arranged above the lower plate of the mechanism, the first nut is arranged above the first spherical gasket, the second spherical gasket is arranged below the lower plate of the mechanism, and the second nut is arranged below the second spherical gasket, the angle adjustment mechanism includes at least four groups of screws, nuts and spherical gaskets, the at least four groups of screws, nuts and spherical gaskets are evenly arranged on the upper plate and the lower plate of the mechanism, and the translational motion mechanism and the angle adjustment mechanism are arranged between the upper plate and the lower plate of the mechanism.

7. The multifunctional gamma knife treatment device with cone beam CT detection according to claim 6, characterized in that: The translational motion mechanism includes a translational motor and a guide rail. The translational motor passes through the upper plate of the mechanism and is connected to the detector. The upper plate of the mechanism is provided with a guide rail. The bottom of the detector is slidingly connected to the upper plate of the mechanism through the guide rail. The translational motor is fixedly connected to the bottom of the upper plate of the mechanism. The translational motor is a ball screw motor, and the guide rail is a cross-roller linear guide.

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