A device for fixing the body position of a radiotherapy patient

Abstract

This utility model belongs to the field of medical device technology and relates to a patient positioning fixation device for radiotherapy. It includes a radiotherapy bed and a bed board. Each side of the bed board has a sliding groove, and two locking seats are slidably disposed inside each groove. The tops of the four locking seats are fixedly connected to the same thermoplastic film. A locking plate is horizontally slidably disposed on the bottom of one side of each locking seat. A limiting strip is fixedly connected to the bottom of each groove on the bottom surface of the bed board. The locking plate is movably engaged with the bottom of the corresponding limiting strip. A push plate is vertically slidably connected to each locking seat via a spring, and a connecting rod is hinged between the push plate and the corresponding locking plate. The advantages of this utility model are: the locking seats can be pushed to slide on the sliding groove via the armrests, which in turn moves the thermoplastic film, allowing the film to be moved to different positions on the bed board for easy patient positioning fixation without requiring the patient to move, thus increasing the device's practicality.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology and relates to a device for fixing the body position of radiotherapy patients. Background Technology

[0002] Radiotherapy, or radiation therapy, demands extremely high precision. Maintaining a fixed patient position ensures consistency and stability during treatment, reducing positioning errors and achieving accurate treatment. Therefore, a patient positioning fixation device is needed for radiotherapy.

[0003] A patient positioning device for radiotherapy disclosed in Chinese patent CN218636494U includes a body plate, a body membrane, and a pressing assembly. The body plate is fixed on the radiotherapy bed and allows the radiotherapy patient to lie on it for positioning. The body plate is provided with symmetrical limiting strips, and a positioning screw hole is opened on the body plate near the end of the limiting strip. The limiting strip is used to connect with the limiting post of the body membrane to limit the lateral position of the body membrane. The positioning screw hole is used to lock the pressing plate of the pressing assembly with a knob bolt.

[0004] The body positioning device fixes the side of the thermoplastic film to the limiting strip through a pressing component. However, the position of the limiting strip on the body plate is fixed, making it inconvenient to move the position of the thermoplastic film when fixing the body position for patients of different heights.

[0005] To address the aforementioned problems, this utility model proposes a device for fixing the body position of radiotherapy patients. Utility Model Content

[0006] To address the problems existing in the background technology, this utility model proposes a device for fixing the body position of radiotherapy patients.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes a radiotherapy bed and a bed board, the bed board is slidably disposed on the top of the radiotherapy bed, and a sliding groove is provided on both sides of the bed board. Two card seats are slidably disposed inside each sliding groove, and the top of the four card seats is fixedly connected to the same thermoplastic film.

[0008] Each of the card slots has a card plate that is horizontally slidably installed on the bottom of one side. The bottom surface of the bed board is fixedly connected to a limit strip at each slide groove, and the card plate is movably engaged with the bottom of the corresponding limit strip.

[0009] Each of the card holders is vertically slidably connected to a push plate via a spring, and a connecting rod is hinged between the push plate and the corresponding card plate.

[0010] Furthermore, an installation groove is provided on one side of the bottom of the card holder, the card plate is slidably disposed inside the installation groove, a limit groove is provided on the top wall of the installation groove, a limit block is fixedly connected to the top of one end of the card plate, and the limit block is slidably connected inside the limit groove.

[0011] Furthermore, the push plate is vertically arranged and slides through the card seat. Two connecting plates are symmetrically fixedly connected to one side of the bottom of the push plate, and the ends of the connecting plates extend to the outside of the card seat.

[0012] Each connecting plate has a spring fixed to its top, and the tops of both springs are fixedly connected to the bottom of the card slot.

[0013] Furthermore, one end of the connecting rod is rotatably connected to one side of the bottom of the push plate, and the other end of the connecting rod is rotatably connected to the bottom of the clamping plate, with the connecting rod moving through the bottom surface of the mounting groove.

[0014] Furthermore, each of the card slots has a handrail fixedly connected to one side of its top, and each handrail has several arc-shaped grooves on its bottom surface, allowing the handrail to slide on the top of the bed board.

[0015] Furthermore, the top surface of the card plate is provided with a number of card slots spaced apart, and the bottom surface of each limiting strip is provided with a number of teeth that are adapted to the card slots at intervals, and the card slots are movably engaged with the teeth.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This radiotherapy patient positioning device is equipped with a card holder, which is slidably positioned inside a slide groove. The card holder can be pushed to slide on the slide groove via the handrail. The card holder will move the thermoplastic film, thereby moving the thermoplastic film to different positions on the bed board to fix the patient's position on the bed board without requiring the patient to move. It is suitable for patients of different heights and increases the practicality of the device.

[0018] 2. This radiotherapy patient positioning device is equipped with a locking plate, which is slidably positioned inside the mounting groove. By pressing down on the push plate, the push plate stretches the spring and pulls one end of the connecting rod downwards. The other end of the connecting rod pulls the locking plate into the mounting groove, causing the locking plate to move away from the limiting strip, so that the card holder can slide on the slide groove. After sliding, the spring pulls the push plate upwards, and through the connecting rod, pushes the locking plate outwards from the mounting groove, so that the locking plate engages with the limiting strip, fixing the card holder. The operation is simple and the position of the card holder is easy to move. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the thermoplastic film in this utility model;

[0021] Figure 3 This is a schematic diagram of the card holder structure in this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the limiting strip in this utility model;

[0023] Figure 5 This is a schematic diagram of the card plate in this utility model.

[0024] In the diagram: 1. Radiotherapy bed; 2. Seat; 3. Push plate; 4. Slide groove; 5. Thermoplastic film; 6. Bed board; 7. Limiting strip; 8. Spring; 9. Connecting rod; 10. Locking plate; 11. Mounting groove; 12. Connecting plate; 13. Locking slot; 14. Headrest; 15. Armrest. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1-5 As shown, the technical solution adopted by this utility model is as follows: A radiotherapy patient positioning fixation device includes a radiotherapy bed 1 and a bed board 6, the bed board 6 being slidably disposed on the top of the radiotherapy bed 1. Sliding grooves 4 are provided on both sides of the bed board 6, and two retaining seats 2 are slidably disposed inside each sliding groove 4.

[0027] The top of each of the four card holders 2 is fixedly connected to the same thermoplastic film 5. This ensures that card holders 2 are fixed at each of the four corners of the thermoplastic film 5, thereby positioning the thermoplastic film 5. The position of the thermoplastic film 5 is adjusted by sliding the card holders 2 within the slide groove 4.

[0028] Each card slot 2 has a card plate 10 that slides horizontally on one side of its bottom.

[0029] A mounting groove 11 is provided on one side of the bottom of the card holder 2, and the card plate 10 is slidably disposed inside the mounting groove 11. A limiting groove is provided on the top wall of the mounting groove 11, and a limiting block is fixedly connected to the top of one end of the card plate 10. The limiting block is slidably connected inside the limiting groove. By limiting the limiting groove and the limiting block, one end of the card plate 10 is positioned in the mounting groove 11.

[0030] The bottom surface of the bed board 6 is fixedly connected to a limit strip 7 at each slide groove 4, and the locking plate 10 is movably engaged with the bottom of the corresponding limit strip 7. After the locking plate 10 is engaged with the limit strip 7, the locking seat 2 is positioned in the slide groove 4.

[0031] The top surface of the card plate 10 is provided with a number of slots 13 spaced apart. The bottom surface of each limiting strip 7 is provided with a number of teeth that are adapted to the slots 13. The slots 13 are movably engaged with the teeth. The card plate 10 is positioned on the limiting strip 7 by the cooperation of the slots 13 and the teeth, thereby fixing the position of the card holder 2.

[0032] Each card slot 2 is vertically slidably connected to a push plate 3 via a spring 8. A connecting rod 9 is hinged between the push plate 3 and the corresponding card slot 10.

[0033] One end of the connecting rod 9 is rotatably connected to one side of the bottom of the push plate 3, and the other end of the connecting rod 9 is rotatably connected to the bottom of the clamping plate 10. The connecting rod 9 moves through the bottom surface of the mounting groove 11. When the push plate 3 moves up and down, it will pull the clamping plate 10 to slide in the mounting groove 11 through the connecting rod 9.

[0034] The push plate 3 is vertically arranged and slides through the card holder 2. Two connecting plates 12 are symmetrically fixedly connected to one side of the bottom of the push plate 3, and the ends of the connecting plates 12 extend to the outside of the card holder 2.

[0035] Each connecting plate 12 has a spring 8 fixed to its top, and the tops of the two springs 8 are fixedly connected to the bottom of the card holder 2. The push plate 3 is positioned on the card holder 2 by the springs 8. When the springs 8 are in their natural state, they will pull the push plate 3 upward, so that one end of the card plate 10 extends out of the mounting groove 11.

[0036] Each card slot 2 has a handrail 15 fixedly connected to one side of its top. Each handrail 15 has several arc-shaped grooves on its bottom surface. The handrail 15 is slidably mounted on the top of the bed board 6. The arc-shaped grooves allow the operator to grip the handrail 15, thereby pushing the card slot 2 to slide on the slide groove 4. At the same time, the handrail 15 limits the card slot 2 to be positioned within the slide groove 4.

[0037] A headrest 14 is fixedly connected to one end of the top of the bed board 6. When the patient lies on the bed board 6, the headrest 14 supports the patient's head and increases comfort.

[0038] Working principle:

[0039] When in use, the patient lies on the bed board 6, with the patient's body positioned between the two slides 4 and the patient's head positioned on the headrest 14.

[0040] Press down on the push plate 3, causing it to slide downwards within the holder 2. The push plate 3 drives the connecting plate 12 downwards and stretches the spring 8. The push plate 3 drives one end of the connecting rod 9 downwards, causing the connecting rod 9 to rotate. Simultaneously, the other end of the connecting rod 9 pulls the holder 10 into the mounting groove 11 until the holder 10 is fully within the mounting groove 11.

[0041] Move the seat 2 into the inside of the slide 4 so that the armrest 15 is located on top of the bed board 6, at which point the thermoplastic film 5 is in contact with the patient's body.

[0042] Releasing the push plate 3 causes the spring 8 to pull the connecting plate 12 upwards, causing the push plate 3 to slide upwards. The push plate 3 pulls one end of the connecting rod 9 upwards, and the other end of the connecting rod 9 pushes the locking plate 10 to slide outwards from the mounting groove 11, causing the locking plate 10 to slide towards the bottom of the limiting strip 7. Through the engagement of the locking groove 13 and the teeth, the locking plate 10 is fixed to the bottom of the limiting strip 7, thereby fixing the locking seat 2 within the sliding groove 4.

[0043] When it is necessary to move the position of the card holder 2 within the slide groove 4, pressing down on the push plate 3 causes the card plate 10 to disengage from the limiting strip 7, allowing the card holder 2 to slide within the slide groove 4. This, in turn, moves the thermoplastic film 5. After adjusting the position of the thermoplastic film 5, releasing the push plate 3 allows the card plate 10 to engage with the limiting strip 7, thus fixing the card holder 2 and subsequently the thermoplastic film 5. This allows the thermoplastic film 5 to fix the patient's position, facilitating subsequent radiotherapy.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A radiotherapy patient position fixing device, comprising a radiotherapy bed (1) and a bed plate (6) which is slidingly arranged on the top of the radiotherapy bed (1), characterized in that, The bed board (6) has a sliding groove (4) on both sides. Each sliding groove (4) has two card seats (2) slidably arranged inside. The top of the four card seats (2) is fixedly connected to the same thermoplastic film (5). Each of the card holders (2) has a card plate (10) horizontally slidably installed on the bottom of one side. The bottom surface of the bed board (6) is fixedly connected to a limit strip (7) at each slide groove (4). The card plate (10) is movably engaged with the bottom of the corresponding limit strip (7). Each of the card holders (2) is vertically slidably connected to a push plate (3) by a spring (8), and a connecting rod (9) is hinged between the push plate (3) and the corresponding card plate (10).

2. The radiotherapy patient immobilization device of claim 1, wherein: The card holder (2) has an installation groove (11) on one side of its bottom. The card plate (10) is slidably disposed inside the installation groove (11). A limit groove is provided on the top wall of the installation groove (11). A limit block is fixedly connected to the top of one end of the card plate (10). The limit block is slidably connected inside the limit groove.

3. The radiotherapy patient immobilization device of claim 1, wherein: The push plate (3) is vertically arranged and slides through the card seat (2). Two connecting plates (12) are symmetrically fixedly connected to one side of the bottom of the push plate (3). The ends of the connecting plates (12) extend to the outside of the card seat (2). Each connecting plate (12) has a spring (8) fixed to its top, and the tops of the two springs (8) are fixedly connected to the bottom of the card holder (2).

4. The radiotherapy patient immobilization device of claim 2, wherein: One end of the connecting rod (9) is rotatably connected to one side of the bottom of the push plate (3), and the other end of the connecting rod (9) is rotatably connected to the bottom of the clamping plate (10). The connecting rod (9) moves through the bottom surface of the mounting groove (11).

5. The patient positioning device for radiotherapy according to claim 1, characterized in that: Each of the card holders (2) has a handrail (15) fixedly connected to one side of its top. Each handrail (15) has several arc-shaped grooves on its bottom surface. The handrail (15) is slidably mounted on the top of the bed board (6).

6. The patient positioning device for radiotherapy according to claim 1, characterized in that: The top surface of the card plate (10) is provided with a number of card slots (13) spaced apart. The bottom surface of each limiting strip (7) is provided with a number of teeth that are adapted to the card slots (13) spaced apart. The card slots (13) are movably engaged with the teeth.

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