A radiotherapy device

Abstract

The present application provides a radiotherapy device belonging to the field of medical device technology, comprising a base, a first bedboard assembly and an electron linear accelerator disposed on the base, a second bedboard assembly disposed at an end of the first bedboard assembly, and a head fixation assembly and a torso fixation assembly disposed on the second bedboard assembly, wherein the electron linear accelerator is configured to emit X-rays. The radiotherapy bed of the radiotherapy device is composed of a first bedboard assembly and a second bedboard assembly, wherein the back support plate and the head support plate of the second bedboard assembly are positionally adjustable. During use, adjacent back support plates can be aligned with each other or form a first avoidance gap, and the head support plate can be aligned with adjacent back support plates or form a second avoidance gap, so that the tumor or surgical wound of the radiotherapy patient is located within the avoidance gap, thereby avoiding squeezing the patient's tumor or wound.

Description

Technical Field

[0001] The present application belongs to the field of medical device technology, and in particular relates to a radiotherapy device. Background Art

[0002] Radiotherapy is the abbreviation of radiation therapy, which uses high-energy rays to kill cancer cells and thus achieve the purpose of treating tumors.

[0003] In order to facilitate the patient's fixed position, reduce movement, and ensure that the radiation accurately irradiates the tumor area, radiotherapy currently usually requires the patient to lie down.

[0004] Existing radiotherapy equipment usually has a plate-type integrated structure and cannot be adjusted. For special patients, such as those with back tumors or those recovering from back surgery, lying flat on a conventional radiotherapy bed will compress the tumor or wound, causing pain to the patient and affecting treatment and recovery. Summary of the Invention

[0005] The present application provides a radiotherapy device that provides slots on opposing surfaces of two connecting frames, into which a head support plate and a plurality of back support plates are inserted. The positions of the head support plate and the back support plates can be freely adjusted to form a first clearance gap between adjacent back support plates, and a second clearance gap between the head support plate and adjacent back support plates. This allows the tumor or surgical wound of the radiotherapy patient to be located within the clearance gap, thereby avoiding squeezing the patient's tumor or wound. The present application solves the problem of existing radiotherapy equipment in which the radiotherapy bed cannot be adjusted, which may compress the patient's tumor or wound during radiotherapy, causing pain to the patient and affecting treatment and recovery.

[0006] An embodiment of the present application provides a radiotherapy device, comprising a base, a first bedplate assembly and an electron linear accelerator disposed on the base, a second bedplate assembly disposed at an end of the first bedplate assembly, and a head fixation assembly and a torso fixation assembly disposed on the second bedplate assembly, wherein the electron linear accelerator is configured to emit X-rays;

[0007] Wherein, the second bed board assembly includes:

[0008] Two connecting frames are arranged opposite to each other, each of the connecting frames has a slot in the middle of the opposite surface of the two connecting frames, one end of the connecting frame is connected to the end of the first bed board assembly, and the slot passes through the other end of the connecting frame;

[0009] The back support plates are plugged into the two opposite slots, the adjacent back support plates are fitted together or form a first avoidance gap, and the torso fixing assembly is arranged opposite to the back support plates to form a ring structure;

[0010] A head support plate is plugged into the two opposite slots, the head support plate and the adjacent back support plate fit together or form a second avoidance gap, and the head fixing component is arranged on the head support plate.

[0011] In a feasible implementation, a clamping plate is provided in the slot of the connecting frame, and an end of the clamping plate away from the first bed board assembly is chamfered;

[0012] The outer wall of the connecting frame is provided with a screw hole, a screw rod is screwed into the screw hole, the inner end of the screw rod is rotatably connected to the outer wall of the clamping plate, and the two clamping plates clamp the head support plate and the plurality of back support plates;

[0013] An inserting hole is provided on the outer wall of the connecting frame. A limiting rod is inserted into the inserting hole. The inner end of the limiting rod is fixedly connected to the outer wall of the clamping plate.

[0014] In a feasible implementation, the body fixing assembly includes a fixing frame and a plurality of binding straps;

[0015] The two fixing frames are respectively arranged on the two connecting frames, and the two ends of the binding belt are respectively connected to the two fixing frames;

[0016] The binding belt corresponds to the back support plate in position, forming the annular structure.

[0017] In a feasible implementation, the head fixing assembly includes a first head fixing assembly, which includes an air pump, an air pressure gauge, a pipeline, a mounting plate, a telescopic cylinder, and a silicone pad;

[0018] The two mounting plates are relatively arranged on both sides of the head support plate, and the telescopic cylinders are provided on the opposite surfaces of the two mounting plates. The telescopic ends of the telescopic cylinders on both sides are relatively arranged, and the silicone pads are rotatably arranged on the telescopic ends of the telescopic cylinders.

[0019] The air pump and the pressure gauge are both fixed on the head support plate, the exhaust end of the air pump is connected to one end of the pipeline, the other end of the pipeline is connected to the telescopic cylinder, and the pressure gauge is connected to the pipeline;

[0020] A plurality of telescopic cylinders are provided on the mounting plate, the plurality of telescopic cylinders are distributed in an arc shape, and valves are provided on the telescopic cylinders.

[0021] In a feasible implementation, the telescopic cylinder includes a first cylinder body and a second cylinder body, the second cylinder body is plugged into the first cylinder body, the valve is fixed on the first cylinder body, and the silicone pad is rotatably arranged on the outer end of the second cylinder body;

[0022] A fixing block is provided in the first cylinder body, and a spring is fixed between the fixing block and the inner end of the second cylinder body.

[0023] In a feasible implementation, the head fixing assembly further includes a second head fixing assembly, and the second head fixing assembly includes a buckle and a resistant mask;

[0024] The buckles are arranged in the middle of the head support plate, and a plurality of the buckles are distributed in a semicircular shape, and the outer sides of the tolerance mask are snapped with the buckles.

[0025] In a feasible implementation, the first bed board assembly includes a lower board, a vertical board, and a board body;

[0026] The two vertical plates are respectively fixedly arranged on two sides of the lower plate body, and the plate body is arranged between the two vertical plates.

[0027] In a feasible implementation, the first bed board assembly further includes a first telescopic mechanism and a second telescopic mechanism;

[0028] The opposing surfaces of the two vertical plates are provided with arc-shaped grooves, and sliding rollers are provided on both sides of the plate body. The multiple sliding rollers on the same side are distributed in an arc shape that matches the arc-shaped grooves, and the outer ends of the sliding rollers are inserted into the arc-shaped grooves, and the outer walls of the sliding rollers are slidably connected to the inner walls of the arc-shaped grooves;

[0029] One end of the second telescopic mechanism is hinged to the lower plate body, and the other end is hinged to the plate body;

[0030] The plate body is hinged to the connecting frame, one end of the first telescopic mechanism is hinged to the plate body, and the other end is hinged to the side wall of the connecting frame.

[0031] In a feasible implementation, the radiotherapy device further includes a lifting mechanism, and the lifting mechanism includes a connecting seat and a lifting assembly;

[0032] The connecting seat is arranged on the base, the lifting assembly is fixed on the connecting seat, and the telescopic end of the lifting assembly is fixedly connected to the lower plate body.

[0033] In a feasible implementation, the base includes a bottom plate, a lead screw, a first cover and a second cover;

[0034] The lead screw is fixed on the base plate, and a screw hole matching the lead screw is provided in the middle of the connecting seat, and the screw rod of the lead screw is screwed into the screw hole of the connecting seat;

[0035] The first cover body and the second cover body are respectively fixed to the two ends of the bottom plate, and the two ends of the connecting seat are respectively plugged into the first cover body and the second cover body;

[0036] The electron linear accelerator is fixed on the first cover or the second cover.

[0037] An embodiment of the present application provides a radiotherapy device, in which the radiotherapy bed is composed of a first bed board assembly and a second bed board assembly, wherein the back support plate and the head support plate of the second bed board assembly are adjustable in position. When in use, adjacent back support plates can be fitted together or form a first avoidance gap, and the head support plate and the adjacent back support plates can be fitted together or form a second avoidance gap, so that the tumor or surgical wound of the radiotherapy patient is located within the avoidance gap, thereby avoiding squeezing the patient's tumor or wound. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of the radiotherapy equipment provided by this application;

[0039] Figure 2 It is a cross-sectional view of a radiotherapy device;

[0040] Figure 3 is a schematic diagram of the connecting frame and its connecting structure;

[0041] Figure 4 is a schematic diagram of the lower plate and its connection structure;

[0042] Figure 5 It is a schematic diagram of the plate and its connection structure;

[0043] Figure 6 is a structural schematic diagram of a first head fixing assembly;

[0044] Figure 7 It is a schematic diagram of the telescopic cylinder and its connection structure;

[0045] Figure 8 2 is a schematic structural diagram of the second head fixing assembly.

[0046] Description of reference numerals:

[0047] 100 - base; 200 - first bed board assembly; 300 - electron linear accelerator; 400 - second bed board assembly; 500 - head fixing assembly; 600 - torso fixing assembly; 700 - lifting mechanism;

[0048] 110 - bottom plate; 120 - lead screw; 130 - first cover; 140 - second cover; 210 - lower plate; 220 - vertical plate; 230 - plate; 240 - first telescopic mechanism; 250 - second telescopic mechanism; 260 - arc groove; 270 - sliding roller; 410 - connecting frame; 420 - back support plate; 430 - head support plate; 510 - first head fixing assembly; 520 - second head fixing assembly; 610 - fixing frame; 620 - binding belt; 710 - connecting seat; 720 - lifting assembly;

[0049] 411-slot; 412-clamping plate; 413-chamfer; 414-screw hole; 415-screw; 416-jack; 417-limit rod; 511-air pump; 512-pressure gauge; 513-pipeline; 514-mounting plate; 515-telescopic cylinder; 516-silicone pad; 517-valve; 518-fixing block; 519-spring; 521-clip; 522-tolerance mask. DETAILED DESCRIPTION

[0050] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0051] Radiotherapy usually requires patients to lie down in order to fix their body position, reduce movement, and ensure that the radiation accurately irradiates the tumor area. Lying down helps control respiratory movement, especially in chest and abdominal treatment, to reduce the impact of organ displacement on treatment. Therefore, conventional radiotherapy posture is mainly lying down. For special patients, such as patients with tumors on the back or patients recovering from back surgery, lying flat on a conventional radiotherapy bed will compress the tumor or wound, causing pain to the patient and affecting treatment and recovery. The radiotherapy equipment provided by this application has adjustable positions of the back support plate 420 and the head support plate 430. When in use, adjacent back support plates 420 can be made to fit together or form a first avoidance gap, and the head support plate 430 can be made to fit together with adjacent back support plates 420 or form a second avoidance gap, so that the tumor or surgical wound of the radiotherapy patient is located within the avoidance gap, thereby avoiding squeezing the patient's tumor or wound.

[0052] The specific structure of the radiotherapy equipment provided in this application is described in detail below with reference to the accompanying drawings.

[0053] Example 1:

[0054] Reference Figure 1-Figure 5As shown, the embodiment of the present application provides a radiotherapy device, including a base 100, which can be a rectangular base body, such as Figure 1 and Figure 2 As shown, a first bed plate assembly 200 and an electron linear accelerator 300 are provided on the base 100. The electron linear accelerator 300 is fixedly mounted at one end of the base 100. The electron linear accelerator 300 consists of a support base and an accelerator. The support base is fixedly mounted on the base 100, and the accelerator is fixedly mounted on the top of the support base. The accelerator model is not limited. The accelerator uses a microwave electromagnetic field to accelerate electrons to form high-energy X-rays and electron beams. During treatment, the accelerator emits X-rays of a specific shape to irradiate tumor tissue.

[0055] A second bed board assembly 400 is provided at the end of the first bed board assembly 200. The first bed board assembly 200 and the second bed board assembly 400 constitute a radiotherapy bed. To secure the patient's body, a head fixation assembly 500 and a torso fixation assembly 600 are further provided on the second bed board assembly 400.

[0056] The second bed board assembly 400 includes a connecting frame 410, a back support board 420 and a head support board 430;

[0057] The connecting frame 410 is a square rod structure and can be made of stainless steel with a certain strength. The two connecting frames 410 are arranged opposite to each other. The middle part of the opposite surface of the two connecting frames 410 is provided with a slot 411. The slot 411 is a rectangular slot. One end of the connecting frame 410 in the length direction is connected to the end of the first bed board assembly 200, and the slot 411 runs through the other end of the connecting frame 410 in the length direction.

[0058] The back support plate 420 and the head support plate 430 can both be rectangular plates. To improve comfort, leather pads can be provided on the outer surfaces of the plates. To be suitable for patients with mild spinal deformities, the back support plate 420 includes straight plates and curved plates with various curvatures.

[0059] Several back support plates 420 are inserted into the two slots 411 from the other end of the connecting frame 410 in the longitudinal direction. Adjacent back support plates 420 are abutted against each other or form a first avoidance gap. The width of the first avoidance gap can be freely adjusted to ensure support for the patient's back and avoid tumors or wounds on the patient's back. The torso fixation assembly 600 is arranged opposite the back support plates 420 to form a ring structure, thereby restraining the patient's body.

[0060] The head support plate 430 is inserted into the two slots 411 from the other end of the connecting frame 410 in the length direction. The head support plate 430 and the adjacent back support plate 420 fit together or form a second avoidance gap. The width of the second avoidance gap can be freely adjusted to ensure support for the patient's head and avoid tumors or wounds on the patient's shoulders. The head fixing component 500 is arranged on the head support plate 430, and the head fixing component 500 is used to fix the patient's head.

[0061] An embodiment of the present application provides a radiotherapy device, in which the radiotherapy bed is composed of a first bed board assembly 200 and a second bed board assembly 400, wherein the back support plate 420 and the head support plate 430 of the second bed board assembly 400 are positionally adjustable. During use, adjacent back support plates 420 can be fitted together or form a first avoidance gap, and the head support plate 430 and the adjacent back support plates 420 can be fitted together or form a second avoidance gap, so that the tumor or surgical wound of the radiotherapy patient is located within the avoidance gap, thereby avoiding squeezing the patient's tumor or wound.

[0062] Further, refer to Figure 3 As shown, in order to stably fix the back support plate 420 and the head support plate 430, a clamping plate 412 is provided in the slot 411 of the connecting frame 410. The clamping plate 412 is a rectangular plate body, and the clamping plate 412 is clearance-fitted with the slot 411. The end of the clamping plate 412 away from the first bed board assembly 200 is provided with a chamfer 413. The chamfer 413 is arc-shaped, thereby facilitating the insertion of the back support plate 420 and the head support plate 430.

[0063] The outer wall of the connecting frame 410 is provided with a screw hole 414, and a screw rod 415 is screwed into the screw hole 414. The inner end of the screw rod 415 is rotatably connected to the outer wall of the clamping plate 412. The two clamping plates 412 clamp the head support plate 430 and the plurality of back support plates 420.

[0064] When the screw rod 415 is rotated clockwise, the screw rod 415 pushes the clamping plates 412 inward, and the clamping plates 412 move inward in the slots 411, so that the two clamping plates 412 clamp the head support plate 430 and the plurality of back support plates 420, so that the head support plate 430 and the back support plate 420 are fixed; conversely, when the screw rod 415 is rotated counterclockwise, the clamping plates 412 move outward, releasing the head support plate 430 and the plurality of back support plates 420;

[0065] Furthermore, a socket 416 is provided on the outer wall of the connecting frame 410, and a limiting rod 417 is inserted into the socket 416. The limiting rod 417 is a conventional rod body, and the inner end of the limiting rod 417 is fixedly connected to the outer wall of the clamping plate 412. By inserting the limiting rod 417 into the socket 416, the clamping plate 412 is prevented from tilting, and the clamping plate 412 is ensured to move laterally.

[0066] Reference Figure 3 As shown, in some embodiments, the body fixing assembly 600 includes a fixing frame 610 and a plurality of binding straps 620;

[0067] The fixing frame 610 may be a bow-shaped metal rod, the length of which is the same as that of the connecting frame 410. The two fixing frames 610 are respectively arranged on the two connecting frames 410. The binding belt 620 may be an elastic belt, and the two ends of the binding belt 620 are respectively connected to the two fixing frames 610.

[0068] The binding belt 620 corresponds to the position of the back support plate 420;

[0069] When fixing the patient's body, adjust the position of the back support plate 420 to avoid touching the patient's wound position, and then fix the binding belt 620 at the corresponding position of the back support plate 420 so that the binding belt 620 and the corresponding back support plate 420 form the annular structure to fix the patient's body.

[0070] Reference Figure 2-Figure 5 As shown, in some embodiments, the first bed board assembly 200 includes a lower board 210, a vertical board 220 and a board body 230;

[0071] The lower plate 210 is a horizontally arranged square plate. The two vertical plates 220 are fixedly arranged on both sides of the lower plate 210 . The plate 230 is a rectangular plate with a flat upper surface. The plate 230 is arranged between the two vertical plates 220 .

[0072] Furthermore, in order to adjust the patient's lying posture, the first bed board assembly 200 further includes a first telescopic mechanism 240 and a second telescopic mechanism 250. Both the first telescopic mechanism 240 and the second telescopic mechanism 250 can be hydraulic telescopic rods or electric push rods.

[0073] The opposing surfaces of the two vertical plates 220 are each provided with an arc-shaped groove 260. The arc-shaped groove 260 is circular. Sliding rollers 270 are each provided on both sides of the plate body 230. The sliding rollers 270 may be composed of a rod and a ball bearing. The multiple sliding rollers 270 on the same side are distributed in an arc shape that matches the arc-shaped groove 260. The outer ends of the sliding rollers 270 are inserted into the arc-shaped groove 260, and the outer walls of the sliding rollers 270 are slidably connected to the inner walls of the arc-shaped groove 260.

[0074] One end of the second telescopic mechanism 250 is hinged to the lower plate 210 , and the other end is hinged to the plate 230 ;

[0075] The plate body 230 is hinged to the connecting frame 410. One end of the first telescopic mechanism 240 is hinged to the plate body 230 and the other end is hinged to the side wall of the connecting frame 410.

[0076] like Figure 2 As shown, when the second telescopic mechanism 250 is extended, the second telescopic mechanism 250 pushes the plate body 230 to move toward the upper left, the left end of the plate body 230 is lifted, and the sliding roller 270 slides toward the upper left in the arc-shaped groove 260; conversely, when the second telescopic mechanism 250 is shortened, the second telescopic mechanism 250 pulls the plate body 230 to move toward the lower right, the left end of the plate body 230 is lowered, and the sliding roller 270 moves toward the lower right in the arc-shaped groove 260;

[0077] When the first telescopic mechanism 240 is extended, the right end of the second bed board assembly 400 is lifted, and when the first telescopic mechanism 240 is shortened, the right end of the second bed board assembly 400 is lowered, thereby adjusting the patient's lying posture to meet the radiotherapy needs of different patients.

[0078] like Figure 4 As shown, in one embodiment, the radiotherapy device further includes a lifting mechanism 700, and the lifting mechanism 700 includes a connecting seat 710 and a lifting assembly 720;

[0079] The connecting seat 710 can be a square seat, and the connecting seat 710 is set on the base 100. The lifting component 720 can be an electric telescopic rod, a cylinder or a hydraulic telescopic rod, etc. The lifting component 720 is fixed on the connecting seat 710. The telescopic end of the lifting component 720 is fixedly connected to the lower plate body 210. The lifting and lowering of the radiotherapy bed is controlled by the lifting component 720, so as to facilitate the adjustment of the patient's height position and facilitate radiotherapy.

[0080] like Figure 1 and Figure 2 As shown, in one embodiment, the base 100 includes a base plate 110, a lead screw 120, a first cover 130 and a second cover 140;

[0081] One end of the lead screw 120 is rotatably connected to the connecting seat, and the connecting seat is fixed on the base plate 110. The other end of the lead screw 120 is connected to the output end of the motor, which can be a stepping motor. The middle part of the connecting seat 710 is provided with a screw hole that matches the lead screw 120. The screw of the lead screw 120 is screwed into the screw hole. The lower surface of the connecting seat 710 is provided with a slide groove, and the upper surface of the base plate 110 is provided with a slide rail, which is slidably connected to the slide groove.

[0082] During radiotherapy, the radiotherapy bed is driven by the lead screw 120 to move horizontally, so that the patient is positioned at the irradiation position of the electron linear accelerator 300;

[0083] The first cover 130 and the second cover 140 are both square covers, which have a certain strength and allow stepping on. The first cover 130 and the second cover 140 are respectively fixed to the two ends of the base plate 110, and the two ends of the connecting seat 710 are respectively plugged into the first cover 130 and the second cover 140, thereby improving the safety and aesthetics of the main body fixing device;

[0084] The electron linear accelerator 300 is fixed on the first cover 130 or the second cover 140 .

[0085] Example 2:

[0086] Reference Figure 6 and Figure 7 As shown, Figure 6 Reference numeral A in the middle represents a patient head model. In some embodiments, the head fixing assembly 500 includes a first head fixing assembly 510 , which includes an air pump 511 , a pressure gauge 512 , a pipeline 513 , a mounting plate 514 , a telescopic cylinder 515 , and a silicone pad 516 .

[0087] The mounting plate 514 is a square plate. The two mounting plates 514 are oppositely arranged on both sides of the upper surface of the head support plate 430. The telescopic cylinder 515 is provided on the opposite surfaces of the two mounting plates 514. The telescopic ends of the telescopic cylinders 515 on both sides are arranged opposite to each other. The silicone pad 516 is rotatably arranged on the telescopic end of the telescopic cylinder 515. The silicone pad 516 can be connected to the telescopic cylinder 515 through a universal joint, so that the silicone pad 516 can be rotated in any direction at a certain angle equivalent to the telescopic cylinder 515, which is conducive to stable fit to the patient's head.

[0088] The air pump 511 and the pressure gauge 512 are both conventional components. Both are fixed to the lower surface or side of the head support plate 430 to avoid contact with the patient. The exhaust end of the air pump 511 is connected to one end of the two pipes 513 through a tee. The other ends of the two pipes 513 are respectively connected to the telescopic cylinders 515 on both sides. The pressure gauge 512 is connected to the pipes 513 to facilitate the detection of air pressure and control of the clamping force on the patient's head.

[0089] Each of the mounting plates 514 is provided with a plurality of telescopic cylinders 515 , and the plurality of telescopic cylinders 515 are distributed in an arc shape so that the plurality of telescopic cylinders 515 surround the patient's ears and clamp the patient's face;

[0090] For patients with cheek tumors, in order to avoid touching the affected area, each of the telescopic cylinders 515 is provided with a valve 517, which is used to control the extension and retraction of the telescopic cylinder 515. When in use, the valve 517 of the telescopic cylinder 515 facing the patient's affected area is closed, and then the air pump 511 is turned on to inflate the other telescopic cylinders 515 so that the multiple silicone pads 516 on both sides of the patient's head fit the side of the patient's face. When the reading of the pressure gauge 512 reaches a certain set range, the air pump 511 is turned off to stabilize and fix the patient's head.

[0091] Further, refer to Figure 7 As shown, in some embodiments, the telescopic cylinder 515 includes a first cylinder body and a second cylinder body, the second cylinder body is plugged into the first cylinder body, the valve 517 is fixed to one end of the first cylinder body, the second cylinder body passes through the other end of the first cylinder body, and the silicone pad 516 is rotatably disposed on the outer end of the second cylinder body;

[0092] A fixing block 518 is provided in the first cylinder, which can be a fixing rod. The fixing block 518 does not affect the air circulation in the first cylinder. A spring 519 is provided in the first cylinder, and the two ends of the spring 519 are respectively connected to the fixing block 518 and the inner end of the second cylinder;

[0093] When the telescopic cylinder 515 is inflated and extended, the telescopic cylinder 515 is stretched, exerting a reverse elastic force on the second cylinder body; when the valve on the pipeline 513 is opened to deflate, the second cylinder body quickly resets under the elastic force of the spring 519, driving the silicone pad 516 away from the patient, thereby facilitating use.

[0094] Example 3:

[0095] Reference Figure 8 As shown, in some embodiments, the head fixing assembly 500 further includes a second head fixing assembly 520 , and the second head fixing assembly 520 includes a buckle 521 and a resistant mask 522 ;

[0096] The buckle 521 can be elastic and is arranged in the middle of the head support plate 430. Multiple buckles 521 are distributed in a semicircle to match the contour of a conventional patient's head. The tolerant mask 522 is a thermoplastic mask customized for each patient. The outer side of the tolerant mask 522 is snapped into the buckle 521 to fix the patient's head.

[0097] Based on the above technical features, the working principle of the radiotherapy device provided by this application in actual application scenarios is as follows:

[0098] Before use, assemble the radiotherapy bed. When the patient can lie completely flat, insert several back support plates 420 and head support plates 430 into the slots 411 in sequence. Adjacent back support plates 420 fit together, and head support plates 430 fit together with adjacent back support plates 420. Then, rotate the screw 415 clockwise to make the two clamping plates 412 clamp the head support plate 430 and several back support plates 420, so that the head support plate 430 and the back support plate 420 are fixed, thereby forming a conventional radiotherapy bed.

[0099] When a patient has a tumor or wound on the back or shoulder and cannot lie completely flat, the head support plate 430 and the back support plate 420 are adjusted according to the patient's tumor or wound, so that a first avoidance gap is formed between adjacent back support plates 420, or a second avoidance gap is formed between the head support plate 430 and the adjacent back support plates 420, so that the tumor or surgical wound of the radiotherapy patient is located within the avoidance gap, thereby avoiding squeezing the patient's tumor or wound. Then, the head support plate 430 and the back support plate 420 are fixed by rotating the screw 415;

[0100] Fixing the binding belts 620 at corresponding positions of the back support plate 420 so that the binding belts 620 and the corresponding back support plate 420 form a circle to fix the patient's body, and fixing the patient's body by multiple binding belts 620;

[0101] When the patient has no wound on the head, the first head fixing assembly 510 or the second head fixing assembly 520 can be used to fix the patient's head; when the patient has a wound on the head or face, the first head fixing assembly 510 is preferably used to fix the patient's head. When in use, close the valve 517 on the telescopic cylinder 515 facing the patient's affected part, and then turn on the air pump 511 to inflate the other telescopic cylinders 515 so that the multiple silicone pads 516 on both sides of the patient's head fit the side of the patient's face. When the pressure gauge 512 reading reaches a certain set range, turn off the air pump 511 to stabilize and fix the patient's head.

[0102] After the patient is stably fixed, the lead screw 120 is turned on to move the patient to the irradiation position of the radiotherapy equipment for radiotherapy.

[0103] The radiotherapy device provided herein features adjustable back support plates 420 and head support plates 430. During use, adjacent back support plates 420 can be aligned or formed into a first clearance gap, while the head support plate 430 can be aligned or formed into a second clearance gap with adjacent back support plates 420. This allows the patient's tumor or surgical wound to be positioned within the clearance gap, thereby avoiding compression of the patient's tumor or wound. This application addresses the problem of existing radiotherapy equipment, where the radiotherapy bed cannot be adjusted, potentially compressing the patient's tumor or wound during radiotherapy, causing pain and impacting treatment and recovery.

[0104] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application based on the several embodiments provided in the present application to obtain other embodiments, and these embodiments do not exceed the scope of protection of the present application.

[0105] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of protection of the embodiments of the present application.

Claims

1. A radiotherapy device, characterized in that: The invention comprises a base (100), a first bed plate assembly (200) and an electron linear accelerator (300) arranged on the base (100), a second bed plate assembly (400) arranged at the end of the first bed plate assembly (200), and a head fixing assembly (500) and a body fixing assembly (600) arranged on the second bed plate assembly (400), wherein the electron linear accelerator (300) is configured to emit X-rays; Wherein, the second bed board assembly (400) comprises: Two connecting frames (410) are arranged opposite to each other, and slots (411) are provided in the middle of the opposite surfaces of the two connecting frames (410), one end of the connecting frame (410) is connected to the end of the first bed board assembly (200), and the slots (411) pass through the other ends of the connecting frames (410); The back support plates (420) are plugged into two opposite slots (411), the adjacent back support plates (420) are fitted to each other or form a first avoidance gap, and the body fixing assembly (600) is arranged opposite to the back support plates (420) to form a ring structure; a head support plate (430) plugged into the two opposite slots (411), the head support plate (430) and the adjacent back support plate (420) being fitted together or forming a second avoidance gap, and the head fixing assembly (500) being disposed on the head support plate (430); The first bed board assembly (200) comprises a lower board (210), a vertical board (220) and a board (230); The two vertical plates (220) are respectively fixedly arranged on two sides of the lower plate body (210), and the plate body (230) is arranged between the two vertical plates (220); The first bed board assembly (200) further includes a first telescopic mechanism (240) and a second telescopic mechanism (250); The opposing surfaces of the two vertical plates (220) are each provided with an arc-shaped groove (260), and both sides of the plate body (230) are each provided with a sliding roller (270), and the plurality of sliding rollers (270) on the same side are distributed in an arc shape matching the arc-shaped groove (260), the outer end of the sliding roller (270) is plugged into the arc-shaped groove (260), and the outer wall of the sliding roller (270) is slidably connected to the inner wall of the arc-shaped groove (260); One end of the second telescopic mechanism (250) is hinged to the lower plate (210), and the other end is hinged to the plate (230); The plate body (230) is hinged to the connecting frame (410); one end of the first telescopic mechanism (240) is hinged to the plate body (230), and the other end is hinged to the side wall of the connecting frame (410); When the second telescopic mechanism (250) is extended, the second telescopic mechanism (250) pushes the plate body (230) to move to the upper left, the left end of the plate body (230) is lifted, and the sliding roller (270) slides to the upper left in the arc groove (260); conversely, when the second telescopic mechanism (250) is shortened, the second telescopic mechanism (250) pulls the plate body (230) to move to the lower right, the left end of the plate body (230) is lowered, and the sliding roller (270) moves to the lower right in the arc groove (260).

2. The radiotherapy device according to claim 1, characterized in that: A clamping plate (412) is provided in the slot (411) of the connecting frame (410), and a chamfer (413) is provided at one end of the clamping plate (412) away from the first bed board assembly (200); The outer wall of the connecting frame (410) is provided with a screw hole (414), a screw rod (415) is screwed into the screw hole (414), the inner end of the screw rod (415) is rotatably connected to the outer wall of the clamping plate (412), and the two clamping plates (412) clamp the head support plate (430) and the plurality of back support plates (420); The outer wall of the connecting frame (410) is provided with a socket (416), a limiting rod (417) is inserted into the socket (416), and the inner end of the limiting rod (417) is fixedly connected to the outer wall of the clamping plate (412).

3. The radiotherapy device according to claim 1, characterized in that: The body fixing assembly (600) includes a fixing frame (610) and a plurality of binding straps (620); The two fixing frames (610) are respectively arranged on the two connecting frames (410), and the two ends of the binding belt (620) are respectively connected to the two fixing frames (610); The binding belt (620) corresponds to the back support plate (420) in position, forming the annular structure.

4. The radiotherapy device according to claim 1, characterized in that: The head fixing assembly (500) comprises a first head fixing assembly (510), wherein the first head fixing assembly (510) comprises an air pump (511), an air pressure gauge (512), a pipeline (513), a mounting plate (514), a telescopic cylinder (515), and a silicone pad (516); The two mounting plates (514) are relatively arranged on both sides of the head support plate (430), and the telescopic cylinders (515) are provided on the opposite surfaces of the two mounting plates (514). The telescopic ends of the telescopic cylinders (515) on both sides are relatively arranged, and the silicone pads (516) are rotatably arranged on the telescopic ends of the telescopic cylinders (515); The air pump (511) and the air pressure gauge (512) are both fixedly mounted on the head support plate (430); the exhaust end of the air pump (511) is connected to one end of the pipeline (513); the other end of the pipeline (513) is connected to the telescopic cylinder (515); and the air pressure gauge (512) is connected to the pipeline (513); A plurality of telescopic cylinders (515) are provided on the mounting plate (514), the plurality of telescopic cylinders (515) are distributed in an arc shape, and a valve (517) is provided on the telescopic cylinders (515).

5. The radiotherapy device according to claim 4, characterized in that: The telescopic cylinder (515) comprises a first cylinder body and a second cylinder body, the second cylinder body is plugged into the first cylinder body, the valve (517) is fixed on the first cylinder body, and the silicone pad (516) is rotatably arranged on the outer end of the second cylinder body; A fixing block (518) is provided in the first cylinder body, and a spring (519) is fixed between the fixing block (518) and the inner end of the second cylinder body.

6. The radiotherapy device according to claim 1, characterized in that: The head fixing assembly (500) further includes a second head fixing assembly (520), wherein the second head fixing assembly (520) includes a buckle (521) and a tolerance mask (522); The buckles (521) are arranged in the middle of the head support plate (430), and a plurality of the buckles (521) are distributed in a semicircular shape. The outer sides of the tolerance mask (522) are snap-connected with the buckles (521).

7. The radiotherapy device according to any one of claims 1 to 6, characterized in that: The radiotherapy device further comprises a lifting mechanism (700), wherein the lifting mechanism (700) comprises a connecting seat (710) and a lifting assembly (720); The connecting seat (710) is arranged on the base (100), the lifting assembly (720) is fixedly arranged on the connecting seat (710), and the telescopic end of the lifting assembly (720) is fixedly connected to the lower plate (210).

8. The radiotherapy device according to claim 7, characterized in that: The base (100) comprises a bottom plate (110), a lead screw (120), a first cover (130), and a second cover (140); The lead screw (120) is fixed on the base plate (110), a screw hole matching the lead screw (120) is provided in the middle of the connecting seat (710), and the screw rod of the lead screw (120) is screwed to the screw hole of the connecting seat (710); The first cover body (130) and the second cover body (140) are respectively fixed to two ends of the bottom plate (110), and two ends of the connecting seat (710) are respectively plugged into the first cover body (130) and the second cover body (140); The electron linear accelerator (300) is fixed on the first cover (130) or the second cover (140).

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