Radiotherapy positioning device

Abstract

The invention belongs to the technical field of medical equipment, and discloses a radiotherapy positioning device, which comprises external irradiation equipment, a fixed base and a fixed supporting plate, the upper surface of the fixed supporting plate is slidably connected with a bearing plate, the upper surface of the bearing plate is provided with a positioning device, the inner surface of the positioning device is provided with a sliding positioning device, and the sliding positioning device is connected with the external irradiation equipment. A headrest is fixedly connected to the upper surface of the bearing plate, auxiliary positioning devices are arranged on the two sides of the headrest, a fixed base is fixedly connected to the lower surface of the fixed supporting plate, and external irradiation equipment is arranged on the left side of the fixed base. By arranging the pressure sensor, the air bag, the arc-shaped plate, the rotating shaft and the connecting pipe, accurate fitting of the body surface of a patient can be achieved, so that the accuracy of radiotherapy positioning is improved, damage to normal tissue in the radiotherapy process is reduced, and meanwhile manpower and material resources consumed for manufacturing the body membrane of the patient in the radiotherapy preparation process can be reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of medical equipment, and in particular relates to a radiotherapy positioning device. Background Art

[0002] Radiotherapy, also known as radiation therapy, is a medical method used to treat cancer and certain non-cancer diseases. Radiotherapy uses high-energy radiation (such as X-rays, gamma rays, electron beams or proton beams) to kill or damage cancer cells. The core principle is to damage the DNA of cancer cells through radiation, causing them to no longer be able to divide and grow normally.

[0003] During radiotherapy, due to the different body shapes of different patients, it is often necessary to make different types of body membranes according to the patient's body shape in order to position the patient during radiotherapy.

[0004] However, in actual use, for patients with different body shapes, it is often necessary to obtain the patient's body shape through three-dimensional scanning and customize the body mask, which makes the preparatory work in the overall radiotherapy process time-consuming and costly. In view of this, we propose a radiotherapy positioning device. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a radiotherapy positioning device, which solves the problem that it is time-consuming to make body membranes during the prior radiotherapy process.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A radiotherapy positioning device, comprising an external irradiation device, a fixed base, and a fixed support plate, wherein a support plate is slidably connected to the upper surface of the fixed support plate, a positioning device is arranged on the upper surface of the support plate, a sliding positioning device is arranged on the inner surface of the positioning device, a headrest is fixedly connected to the upper surface of the support plate, auxiliary positioning devices are arranged on both sides of the headrest, a fixed base is fixedly connected to the lower surface of the fixed support plate, and an external irradiation device is arranged on the left side of the fixed base;

[0008] The positioning device includes a rotating shaft, an arc plate is fixedly connected to the upper end of the outer arc surface of the rotating shaft, an airbag is fixedly connected to the inner arc surface of the arc plate, a pressure sensor is fixedly connected to the center of the inner arc surface of the airbag, a connecting pipe is fixedly connected to the outer arc surface of the arc plate, and a control panel is arranged on the front surface of the fixed base.

[0009] Preferably, the sliding positioning device includes a fixed rod, the upper end of the inner surface of the fixed rod is slidably connected to a trigger block, the outer arc surface of the trigger block is fixedly connected to a limiting ring, the inner surface of the fixed rod is slidably connected to a connecting rod, the lower part of the outer surface of the connecting rod is fixedly connected to a clamping block, and the lower surface of the fixed end of the rotating shaft is fixedly connected to a sliding block.

[0010] Preferably, the auxiliary positioning device includes a front fixed block whose inner surface is rotatably connected to an elastic telescopic rod, an outer arc surface of the elastic telescopic rod is rotatably connected to an outer shaft, an outer arc surface of the outer shaft is fixedly connected to a sleeve rod via a strap, and a rear fixed block is provided at one end of the headrest away from the front fixed block, and a positioning rod is fixedly connected to the upper surface of the rear fixed block.

[0011] Preferably, an air pump is provided on the inner surface of the fixed base, the overall length of the fixed support plate is greater than that of the supporting plate, and rectangular sliding grooves are provided at both the front and rear ends of the upper surface of the supporting plate.

[0012] Preferably, a rectangular groove with the same spacing distance is opened inside the front end slide groove of the support plate, the outer arc surface of the movable end of the rotating shaft is fixedly connected to an arc plate, a through hole is opened on the outer arc surface of the arc plate, the air inlet of the airbag is located in the through hole inside the arc plate, and the airbag is arranged in an arc shape as a whole.

[0013] Preferably, the sensing part of the pressure sensor is made of a flexible material, the inner surface of the connecting tube is fixedly connected to the connecting tube, one end of the connecting tube is fixedly connected to the airbag, the end of the connecting tube away from the airbag is connected to the air pump inside the fixed base, and the front surface of the fixed base is provided with multiple groups of through holes.

[0014] Preferably, the outer surface of the fixing rod is fixedly connected to the arc plate, a through hole is provided at the front end of the arc plate, a cylindrical through hole is provided at the upper end of the inner surface of the fixing rod, a through hole is provided at the lower part of the outer arc surface of the fixing rod, the lower surface of the trigger block is set as an inclined surface, the limiting ring is set as a circular ring with a diameter larger than the trigger block, and the upper surface of the linkage rod is set as an inclined surface.

[0015] Preferably, one end of the connecting rod away from the blocking block is elastically connected to the fixed rod through a spring, one end of the blocking block away from the connecting rod is set as an inclined surface, the upper surface of the slider is fixedly connected to the fixed end of the rotating shaft, the outer surface of the slider is slidably connected to the supporting plate, and the upper surface of the slider is set as an arc surface.

[0016] Preferably, a plurality of groups of cylindrical through holes are provided on the right side of the front fixed block, the lower end of the front fixed block is fixedly connected to the supporting plate, a rectangular through hole is provided on the upper surface of the front fixed block, a penetrating through hole is provided on the right end of the front fixed block, a rectangular slide groove is provided on the fixed end of the elastic telescopic rod, a rectangular protrusion is provided at the movable end of the elastic telescopic rod, a disc-shaped protrusion is provided at the movable end of the elastic telescopic rod, a plurality of groups of cylindrical protrusions are provided on the left side of the disc-shaped protrusion of the elastic telescopic rod, and the outer arc surface of the elastic telescopic rod is elastically connected to the outer shaft through a spiral spring.

[0017] Preferably, a strap is wrapped around the outer arc surface of the outer shaft, a cylindrical groove is opened at the center of the inner surface of the sleeve rod, a rectangular groove is opened on the outer arc surface of the sleeve rod, and the rear fixing block and the front fixing block are respectively located on both sides of the headrest.

[0018] The present invention provides a radiotherapy positioning device. It has the following beneficial effects:

[0019] 1. The pressure sensor, airbag, arc plate, rotating shaft and connecting tube provided in the present invention can achieve precise fitting to the patient's body surface, thereby improving the accuracy of radiotherapy positioning and reducing damage to normal tissues during radiotherapy. At the same time, it can also reduce the manpower and material resources consumed in making the patient's body membrane during radiotherapy preparation.

[0020] 2. The present invention can realize flexible adjustment of the position of the arc plate by setting the trigger block, limit ring, fixing rod, linkage rod, clamping block and sliding block, meet the positioning requirements of radiotherapy target areas of different patients, and improve the flexibility and convenience of radiotherapy positioning.

[0021] 3. The present invention can achieve an auxiliary fixation effect on the patient's head by means of the rear fixing block, sleeve rod, front fixing block, elastic telescopic rod, positioning rod and outer shaft, ensure the accuracy of the patient's head position during radiotherapy, thereby improving the stability and reliability of the overall radiotherapy effect, and the tightness of the strap can be adjusted for patients with different head circumferences. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A perspective view of the present invention;

[0023] Figure 2 It is a schematic diagram of the positioning device of the present invention;

[0024] Figure 3 It is a schematic diagram of the cross section of the fixing rod of the present invention;

[0025] Figure 4 It is a schematic diagram of a cross section of a support plate of the present invention;

[0026] Figure 5It is a schematic diagram of the headrest of the present invention;

[0027] Figure 6 It is a schematic diagram of the right end of the elastic telescopic rod of the present invention.

[0028] Among them, 1. fixed support plate; 2. positioning device; 3. sliding positioning device; 4. auxiliary positioning device; 5. supporting plate; 6. fixed base; 7. external irradiation equipment; 8. headrest; 201. pressure sensor; 202. airbag; 203. arc plate; 204. rotating shaft; 205. connecting pipe; 206. control panel; 301. trigger block; 302. limiting ring; 303. fixing rod; 304. connecting rod; 305. clamping block; 306. sliding block; 401. rear fixing block; 402. sleeve rod; 403. front fixing block; 404. elastic telescopic rod; 405. positioning rod; 406. external shaft. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example:

[0031] Please see attached Figure 1 -Attached Figure 2 An embodiment of the present invention provides a radiotherapy positioning device, including an external irradiation device 7, a fixed base 6, and a fixed support plate 1. A supporting plate 5 is slidably connected to the upper surface of the fixed support plate 1, a positioning device 2 is arranged on the upper surface of the supporting plate 5, a sliding positioning device 3 is arranged on the inner surface of the positioning device 2, a headrest 8 is fixedly connected to the upper surface of the supporting plate 5, auxiliary positioning devices 4 are arranged on both sides of the headrest 8, a fixed base 6 is fixedly connected to the lower surface of the fixed support plate 1, and an external irradiation device 7 is arranged on the left side of the fixed base 6.

[0032] The positioning device 2 includes a rotating shaft 204, the upper end of the outer arc surface of the rotating shaft 204 is fixedly connected to an arc plate 203, the inner arc surface of the arc plate 203 is fixedly connected to an airbag 202, the center of the inner arc surface of the airbag 202 is fixedly connected to a pressure sensor 201, the outer arc surface of the arc plate 203 is fixedly connected to a connecting tube 205, and a control panel 206 is arranged on the front surface of the fixed base 6.

[0033] An air pump is provided on the inner surface of the fixed base 6, through which inert gas can be continuously transported into the airbag 202, so that the airbag 202 as a whole can expand and extend until it covers and fits the patient's body surface. The overall length of the fixed pallet 1 is greater than the supporting plate 5, so it can accommodate the supporting plate 5 to slide on the upper surface of the fixed pallet 1. Rectangular sliding grooves are provided at the front and rear ends of the upper surface of the supporting plate 5, so it can accommodate the sliding block 306 to slide inside it. A rectangular groove with the same spacing distance is provided inside the front end sliding groove of the supporting plate 5, so it can accommodate the block 305 to be inserted therein and limit the overall position of the arc plate 203. The outer arc surface of the movable end of the rotating shaft 204 is fixedly connected to the arc plate 203, and the outer arc surface of the arc plate 203 A through hole is provided therein, so that it can accommodate the connecting tube 205 to pass through and be connected to the airbag 202. The air inlet of the airbag 202 is located in the internal through hole of the arc plate 203. The airbag 202 is arranged in an arc shape as a whole. The sensing part of the pressure sensor 201 is made of a flexible material. The pressure sensor 201 is a flexible pressure sensor in the prior art, so its principle is not described in detail. The inner surface of the connecting tube 205 is fixedly connected to the connecting tube 205, one end of the connecting tube 205 is fixedly connected to the airbag 202, and the end of the connecting tube 205 away from the airbag 202 is connected to the air pump inside the fixed base 6. A plurality of groups of through holes are provided on the front surface of the fixed base 6, so that the control buttons of the control panel 206 can be accommodated therein.

[0034] Please see attached Figure 1 , Attachment Figure 3 And attached Figure 4 The sliding positioning device 3 includes a fixed rod 303, the upper end of the inner surface of the fixed rod 303 is slidably connected with a trigger block 301, the outer arc surface of the trigger block 301 is fixedly connected with a limiting ring 302, the inner surface of the fixed rod 303 is slidably connected with a connecting rod 304, the lower part of the outer surface of the connecting rod 304 is fixedly connected with a clamping block 305, and the lower surface of the fixed end of the rotating shaft 204 is fixedly connected with a slider 306.

[0035] The outer surface of the fixing rod 303 is fixedly connected to the arc plate 203, and a through hole is provided at the front end of the arc plate 203, so that the fixing rod 303 can be located inside it, and a cylindrical through hole is provided at the upper end of the inner surface of the fixing rod 303, so that the trigger block 301 can slide on the upper end of the fixing rod 303, and a through hole is provided at the lower part of the outer arc surface of the fixing rod 303, so that the card block 305 can be extended and retracted, and the lower surface of the trigger block 301 is set as an inclined surface, so that when it is pressed, it can push the linkage rod 304 to move toward the inside of the fixing rod 303 through its inclined surface, and the limiting ring 302 is set as a circular ring and The diameter is larger than the trigger block 301, so the movement limit position of the trigger block 301 can be limited. The upper surface of the connecting rod 304 is set to an inclined surface. The end of the connecting rod 304 away from the block 305 is elastically connected to the fixed rod 303 through a spring. The end of the block 305 away from the connecting rod 304 is set to an inclined surface. Therefore, there is no need to press the trigger block 301 during the closing process of the arc plate 203. The upper surface of the slider 306 is fixedly connected to the fixed end of the rotating shaft 204, and the outer surface of the slider 306 is slidably connected to the supporting plate 5. The upper surface of the slider 306 is set to an arc surface, so it can be fixedly connected to the arc surface of the rotating shaft 204.

[0036] Please see attached Figure 1 , Attachment Figure 5 And attached Figure 6 The auxiliary positioning device 4 includes a front fixed block 403 whose inner surface is rotatably connected to an elastic telescopic rod 404, an outer arc surface of the elastic telescopic rod 404 is rotatably connected to an outer shaft 406, and an outer arc surface of the outer shaft 406 is fixedly connected to a sleeve rod 402 through a strap, and a rear fixed block 401 is provided at one end of the headrest 8 away from the front fixed block 403, and a positioning rod 405 is fixedly connected to the upper surface of the rear fixed block 401.

[0037] The right side of the front fixed block 403 is provided with multiple groups of cylindrical through holes, so when the elastic telescopic rod 404 is inserted therein, the angle of the elastic telescopic rod 404 can be limited by preventing itself from changing its angle, the lower end of the front fixed block 403 is fixedly connected to the supporting plate 5, and a rectangular through hole is provided on the upper surface of the front fixed block 403, so that the strap can be extended therefrom, and a through through hole is provided at the right end of the front fixed block 403, so that the elastic telescopic rod 404 can be accommodated therein, and a rectangular slide groove is provided at the fixed end of the elastic telescopic rod 404, and a rectangular protrusion is provided at the movable end of the elastic telescopic rod 404, so that when the movable end of the elastic telescopic rod 404 is deflected at an angle, its fixed end can rotate synchronously, and the elastic telescopic A disc-shaped protrusion is provided at the movable end of the rod 404, and a plurality of groups of cylindrical protrusions are provided on the left side of the disc-shaped protrusion of the elastic telescopic rod 404. Therefore, by inserting the front fixed block 403 through the cylindrical protrusion, the overall angle of the elastic telescopic rod 404 can be limited. The outer arc surface of the elastic telescopic rod 404 is elastically connected to the outer shaft 406 through a spiral spring, so that the strap can always have a certain tension. The outer arc surface of the outer shaft 406 is wrapped with a strap. A cylindrical groove is provided at the center of the inner surface of the sleeve rod 402, and a rectangular groove is provided at the outer arc surface of the sleeve rod 402, so that the shape of its internal groove can match the shape of the positioning rod 405. The rear fixed block 401 and the front fixed block 403 are respectively located on both sides of the headrest 8.

[0038] Working principle:

[0039] During use, the patient is required to lie on the support plate 5 according to the different radiotherapy target areas. At this time, the arc plate 203 can be rotated so that both ends of the arc plate 203 are in contact with the upper surface of the support plate 5. At this time, the air pump inside the fixed base can be started through the control panel 206, and the air pump will transport the inert gas to the inside of the airbag 202 through the connecting pipe, so that the airbag 202 as a whole can expand and fit the patient's body surface and fix its position. At the same time, during the positioning process of the airbag 202, the flexible pressure sensor 201 sensor sheet will also sense the pressure intensity information and feed it back to the control panel 206. At this time, the operating physician can control the control panel 206 to continue or stop pressurization to complete the convenient fixation of the patient to be treated with radiotherapy.

[0040] At the same time, since the radiotherapy target areas of different patients are different, the trigger block can be pressed before the through-hole control panel 206 starts the air pump. When the trigger block is pressed, the connecting rod will be squeezed through the inclined surface of its lower end, and the connecting rod will move toward the inside of the fixed rod during the squeezing process and squeeze the spring. At this time, the block 305 will be driven by the connecting rod to retract into the inside of the fixed rod, thereby contacting the overall position of the arc plate 203. At this time, the arc plate 203 can be pushed within the limit range of the sliding groove on the upper surface of the supporting plate 5, so that the arc plate 203 can move to the specified position. At this time, the trigger block can be released, and the spring will push the connecting rod to reset due to its own elastic force, and push the trigger block upward. At this time, due to the movement of the connecting rod, the block 305 will also extend out and insert into the card groove inside the supporting plate 5, thereby limiting the overall position of the arc plate 203.

[0041] In addition, when it is necessary to fix the position of the patient's head, the sleeve rod can be directly pulled to drive the outer shaft to rotate and release the strap to extend. At this time, the sleeve rod is inserted into the outer side of the positioning rod above the rear fixing block to complete the positioning of the sleeve rod, and the sleeve rod will assist in fixing the patient's head through the strap. In the actual auxiliary fixation process, due to the different head circumferences of different patients, the movable end of the elastic telescopic rod 404 can be pulled outward at this time. At this time, the cylindrical protrusion at its movable end will be pulled inside the front fixing block, thereby contacting the angle limit of the elastic telescopic rod 404. At this time, the elastic telescopic rod 404 can be rotated to change the size of the scroll spring elastic force between the elastic telescopic rod 404 and the outer shaft to avoid the strap being too tight or too loose when assisting in fixing the patient's head. When the adjustment is completed, the elastic telescopic rod 404 can be pushed to reinsert the cylindrical protrusion at its movable end into the cylindrical groove on the right surface of the front positioning block, thereby completing the angle limit of the elastic telescopic rod 404.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A radiotherapy positioning device, comprising an external irradiation device (7), a fixed base (6), and a fixed support plate (1), characterized in that: A support plate (5) is slidably connected to the upper surface of the fixed support plate (1), a positioning device (2) is provided on the upper surface of the support plate (5), a sliding positioning device (3) is provided on the inner surface of the positioning device (2), a headrest (8) is fixedly connected to the upper surface of the support plate (5), auxiliary positioning devices (4) are provided on both sides of the headrest (8), a fixed base (6) is fixedly connected to the lower surface of the fixed support plate (1), and an external irradiation device (7) is provided on the left side of the fixed base (6); The positioning device (2) comprises a rotating shaft (204), the upper end of the outer arc surface of the rotating shaft (204) is fixedly connected to an arc plate (203), the inner arc surface of the arc plate (203) is fixedly connected to an air bag (202), the center of the inner arc surface of the air bag (202) is fixedly connected to a pressure sensor (201), the outer arc surface of the arc plate (203) is fixedly connected to a connecting pipe (205), and a control panel (206) is provided on the front surface of the fixed base (6).

2. A radiotherapy positioning device according to claim 1, characterized in that: The sliding positioning device (3) comprises a fixed rod (303), the upper end of the inner surface of the fixed rod (303) is slidably connected to a trigger block (301), the outer arc surface of the trigger block (301) is fixedly connected to a limit ring (302), the inner surface of the fixed rod (303) is slidably connected to a linkage rod (304), the lower part of the outer surface of the linkage rod (304) is fixedly connected to a clamping block (305), and the lower surface of the fixed end of the rotating shaft (204) is fixedly connected to a sliding block (306).

3. A radiotherapy positioning device according to claim 1, characterized in that: The auxiliary positioning device (4) comprises a front fixing block (403) whose inner surface is rotatably connected to an elastic telescopic rod (404), whose outer arc surface is rotatably connected to an outer shaft (406), whose outer arc surface is fixedly connected to a sleeve rod (402) via a binding belt, and a rear fixing block (401) is provided at one end of the headrest (8) away from the front fixing block (403), whose upper surface is fixedly connected to a positioning rod (405).

4. A radiotherapy positioning device according to claim 1, characterized in that: An air pump is provided on the inner surface of the fixed base (6); the overall length of the fixed support plate (1) is greater than that of the supporting plate (5); and rectangular sliding grooves are provided at both the front and rear ends of the upper surface of the supporting plate (5).

5. A radiotherapy positioning device according to claim 1, characterized in that: A rectangular groove with the same spacing is provided inside the front end slide groove of the support plate (5); the outer arc surface of the movable end of the rotating shaft (204) is fixedly connected to an arc plate (203); a through hole is provided on the outer arc surface of the arc plate (203); the air inlet of the airbag (202) is located in the inner through hole of the arc plate (203); and the airbag (202) is arranged in an arc shape as a whole.

6. A radiotherapy positioning device according to claim 1, characterized in that: The sensing part of the pressure sensor (201) is made of a flexible material, the inner surface of the connecting tube (205) is fixedly connected to the connecting tube (205), one end of the connecting tube (205) is fixedly connected to the airbag (202), the end of the connecting tube (205) away from the airbag (202) is connected to the air pump inside the fixed base (6), and the front surface of the fixed base (6) is provided with a plurality of groups of through holes.

7. A radiotherapy positioning device according to claim 2, characterized in that: The outer surface of the fixing rod (303) is fixedly connected to the arc plate (203), the front end of the arc plate (203) is provided with a through hole, the upper end of the inner surface of the fixing rod (303) is provided with a cylindrical through hole, the lower part of the outer arc surface of the fixing rod (303) is provided with a through hole, the lower surface of the trigger block (301) is arranged as an inclined surface, the limiting ring (302) is arranged in a circular ring shape with a diameter larger than the trigger block (301), and the upper surface of the linkage rod (304) is arranged as an inclined surface.

8. A radiotherapy positioning device according to claim 2, characterized in that: One end of the linkage rod (304) away from the clamping block (305) is elastically connected to the fixed rod (303) via a spring, one end of the clamping block (305) away from the linkage rod (304) is arranged as an inclined surface, the upper surface of the slider (306) is fixedly connected to the fixed end of the rotating shaft (204), the outer surface of the slider (306) is slidably connected to the supporting plate (5), and the upper surface of the slider (306) is arranged as an arc surface.

9. A radiotherapy positioning device according to claim 3, characterized in that: The right side of the front fixing block (403) is provided with a plurality of groups of cylindrical through holes, the lower end of the front fixing block (403) is fixedly connected to the supporting plate (5), the upper surface of the front fixing block (403) is provided with a rectangular through hole, the right end of the front fixing block (403) is provided with a through through hole, the fixed end of the elastic telescopic rod (404) is provided with a rectangular slide groove, the movable end of the elastic telescopic rod (404) is provided with a rectangular protrusion, the movable end of the elastic telescopic rod (404) is provided with a disc-shaped protrusion, the left side of the disc-shaped protrusion of the elastic telescopic rod (404) is provided with a plurality of groups of cylindrical protrusions, and the outer arc surface of the elastic telescopic rod (404) is elastically connected to the outer shaft (406) through a spiral spring.

10. A radiotherapy positioning device according to claim 3, characterized in that: A binding strap is wound around the outer arc surface of the outer shaft (406), a cylindrical groove is provided at the center of the inner surface of the sleeve rod (402), a rectangular groove is provided on the outer arc surface of the sleeve rod (402), and the rear fixing block (401) and the front fixing block (403) are respectively located on both sides of the headrest (8).

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