Experimental animal irradiation auxiliary fixing device

Abstract

The utility model discloses an auxiliary fixing device for experimental animal irradiation, which relates to the technical field of auxiliary fixing devices for irradiation and comprises a fixing frame, a pressing mechanism, a fixing belt and a positioning mechanism. A first limiting sliding groove, a second limiting sliding groove and a positioning clamping groove are sequentially formed in the top of the fixing frame from inside to outside. The two pressing mechanisms are slidably connected to the inner wall of the first limiting sliding groove and the inner wall of the second limiting sliding groove correspondingly, and a fixing belt is connected between the two pressing mechanisms. And the two groups of pressing mechanisms are respectively clamped and fixed with the positioning clamping grooves through the positioning mechanisms. The pressing mechanism in the device is slidably arranged at the top of the fixing frame, the position can be conveniently adjusted according to the body type of the animal, the whole height of the fixing belt is reduced by driving the two ends of the fixing belt to descend during operation, the animal located on the inner side of the fixing belt is fixed, overall operation is simple, and practicability is high. Hands do not need to stretch below the fixing frame to connect the two ends of the fixing belt, and the working efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of radiation auxiliary fixing devices, in particular to a radiation auxiliary fixing device for experimental animals. Background Art

[0002] Before radiotherapy is performed on patients, animal irradiation experiments are required to study the biological effects of radiation and verify the clinical effectiveness of radiotherapy.

[0003] In traditional animal irradiation experiments, the animals need to be fixed first, and the most commonly used animals are mice. Existing animal irradiation auxiliary fixation devices mostly use a fixing plate. A fixed slot is opened on the fixing plate, and then a fixing belt is passed through the slot to fix the mouse. Although this device can achieve fixation, it still has defects in actual use. First, the position of the slot is fixed and cannot be adjusted according to the body shape of the animal, resulting in a limited fixing position. Second, since the Velcro at both ends of the fixing belt is at the bottom of the slot after fixation, when connecting the two ends of the fixing belt, the operator needs to extend his hand to the bottom of the fixing plate to fix the two ends of the fixing belt. If the fixing plate is directly installed on the external plate body, and the bottom and the top of the external body are at the same horizontal plane, then it is also necessary to reach the bottom of the external plate body to fix the two ends of the fixing belt. The operation is extremely inconvenient, resulting in low work efficiency. Utility Model Content

[0004] In order to solve the problem that the position of the through slot is fixed and cannot be adjusted according to the animal's body shape, resulting in limited fixing position and the operator needs to extend his hand to the bottom of the fixing plate to fix the two ends of the fixing belt when connecting the two ends of the fixing belt, which is extremely inconvenient and leads to low work efficiency, the utility model provides a fixing device for auxiliary irradiation of experimental animals.

[0005] The utility model provides an experimental animal irradiation auxiliary fixing device adopts the following technical solution:

[0006] A fixing device for auxiliary irradiation of experimental animals comprises a fixing frame, a pressing mechanism, a fixing belt and a positioning mechanism, wherein a first limiting slide groove, a second limiting slide groove and a positioning card slot are sequentially provided on the top of the fixing frame from the inside to the outside; the pressing mechanism is provided with two groups, the two groups of pressing mechanisms are respectively slidably connected to the inner wall of the first limiting slide groove and the inner wall of the second limiting slide groove, and are arranged in opposite directions; the fixing belt is connected between the two groups of pressing mechanisms; the two groups of pressing mechanisms are respectively fixed to the positioning card slot by the positioning mechanism.

[0007] Furthermore, the fixed frame includes a lower plate frame, an upper plate frame and a support rod, wherein the upper plate frame is located on one side of the top of the lower plate frame and is fixedly connected to the top of the lower plate frame through the support rod; the first limiting slide groove, the second limiting slide groove and the positioning slot are sequentially opened on the top of the upper plate frame from the inside to the outside.

[0008] Furthermore, the pressing mechanism includes a slide seat, a square groove, a limiting roller, a lifting plate, a synchronous plate, a positioning cylinder, a positioning column, a first spring, a rectangular slot and a conical elastic clip, wherein the slide seat is arranged on the top of the upper plate frame, and the bottom of the slide seat is slidably connected to the inner wall of the first limiting slide groove and the inner wall of the second limiting slide groove respectively; the square groove is opened at the top of one end of the slide seat and corresponds to the position of the first limiting slide groove; the limiting roller is rotatably connected to the inner wall of the square groove, the lifting plate is slidably connected to the inner wall of the square groove and is located on one side of the limiting roller, and the surface of the lifting plate is in contact with the surface of the limiting roller; one end of the lifting plate passes through the top of the square groove and is fixedly connected to the fixing belt, and the other end of the lifting plate The cam is an angular channel that is formed on a pair of camming plates and has a central axis that is adapted to move relative to the first axis of the sliding seat. The cam is an arc channel that is adapted to move relative to the first axis of the sliding seat. The cam is an arc channel that is adapted to move relative to the first axis of the sliding seat. The cam is an arc channel that is adapted to move relative to the first axis of the sliding seat.

[0009] Furthermore, a guide cylinder is symmetrically arranged at the bottom of the slide seat corresponding to the position of the second limiting slide groove, and a guide rod is symmetrically arranged at the top of the synchronization plate corresponding to the position of the second limiting slide groove; one end of the guide rod is located inside the guide cylinder and is slidably connected to the inner wall of the guide cylinder.

[0010] Furthermore, the positioning mechanism includes a positioning seat, a second spring and a handle, wherein the positioning seat is located outside the positioning slot; positioning columns are evenly arranged on a side surface of the lower end of the positioning seat close to the positioning slot and are adapted to the outer dimensions of the positioning slot, one end of the positioning column is located inside the positioning slot and is clamped and fixed to the inner wall of the positioning slot; the handle is arranged on a side surface of the lower end of the positioning seat away from the positioning slot; a guide shaft is symmetrically arranged on an end surface of the upper end of the positioning seat close to the slide, one end of the guide shaft is slidably connected to the inner wall of one end of the slide, and the second spring is fixedly connected between the guide shaft and the end surface of the slide.

[0011] In summary, the present invention includes at least one of the following beneficial technical effects:

[0012] 1. The utility model has a reasonable structure. The device is provided with a first limiting slide groove, a second limiting slide groove, a positioning card slot and a positioning mechanism. The first limiting slide groove and the second limiting slide groove enable the pressing mechanism to slide on the top of the fixing frame, so that the installation position can be adjusted according to the animal's body shape, which is more convenient for limiting and fixing. The positioning card slot and the positioning mechanism are designed to limit and fix the pressing mechanism after the position is adjusted, effectively preventing it from displacement and improving the fixing stability;

[0013] 2. When the pressing mechanism in the device is in operation, it drives both ends of the fixing belt to descend synchronously. The descent of both ends of the fixing belt drives the overall height of the fixing belt to decrease synchronously, so as to fix the animal inside the fixing belt. The overall operation is simple, and there is no need to reach under the fixing frame to connect the two ends of the fixing belt, which effectively improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This utility model is a fixing device for auxiliary irradiation of experimental animals;

[0015] Figure 2 This is a schematic diagram of the structure of a fixing belt in a fixing device for auxiliary irradiation of experimental animals according to the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of a pressing mechanism in a fixing device for auxiliary irradiation of experimental animals according to the utility model;

[0017] Figure 4 The utility model is a schematic diagram of the structure of a positioning mechanism in a fixing device for auxiliary irradiation of experimental animals.

[0018] Reference numerals:

[0019] 1. Fixed frame; 2. Pressing mechanism; 3. Fixed belt; 4. Positioning mechanism; 14. First limiting slide; 15. Second limiting slide; 16. Positioning slot; 11. Lower plate frame; 12. Upper plate frame; 13. Support rod;

[0020] 21. Sliding seat; 22. Square groove; 23. Limiting roller; 24. Lifting plate; 25. Synchronous plate; 26. Positioning cylinder; 27. Positioning column; 28. First spring; 29. ​​Rectangular slot; 210. Conical elastic clamp;

[0021] 201, guide cylinder; 251, guide rod; 41, positioning seat; 42, second spring; 43, pull handle; 411, positioning column. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-Figure 4 The utility model is described in further detail.

[0023] The utility model embodiment discloses a fixing device for auxiliary irradiation of experimental animals.

[0024] Example 1

[0025] Reference Figure 1-Figure 4 A fixing device for auxiliary irradiation of experimental animals includes a fixing frame 1, a pressing mechanism 2, a fixing belt 3 and a positioning mechanism 4.

[0026] Among them, the pressing mechanism 2 is slidably connected to the top of the fixing frame 1, so that the position can be adjusted according to the body shape of the animal. When the pressing mechanism 2 is in operation, it simultaneously drives the two ends of the fixing belt 3 to descend. The descent of the two ends of the fixing belt 3 simultaneously drives the overall height of the fixing belt 3 to decrease, thereby fixing the animal on the inside of the fixing belt 3. The overall operation is simple, and there is no need to reach under the fixing frame 1 to connect the two ends of the fixing belt 3, which effectively improves work efficiency. Among them, in order to facilitate the fixation of the pressing mechanism 2 after the position is adjusted, the device is also provided with a positioning mechanism 4, through which the pressing mechanism 2 can be firmly fixed on the fixing frame 1, effectively improving stability.

[0027] The structure and connection relationship of the above device are as follows: the top of the fixed frame 1 is provided with a first limiting slide groove 14, a second limiting slide groove 15 and a positioning card groove 16 in sequence from the inside to the outside; two groups of pressing mechanisms 2 are provided; the two groups of pressing mechanisms 2 are slidably connected to the inner wall of the first limiting slide groove 14 and the inner wall of the second limiting slide groove 15, respectively, and are arranged in reverse; a fixing belt 3 is connected between the two groups of pressing mechanisms 2; the two groups of pressing mechanisms 2 are respectively fixed by the positioning mechanism 4 and the positioning card groove 16; it can be clearly known from the above description that the present device is provided with two groups of pressing mechanisms 2 on the fixed frame 1; the two groups of pressing mechanisms 2 can be slidably connected to the top of the fixed frame 1 for position adjustment; after the position adjustment, The positions of the two groups of pressing mechanisms 2 can be fixed by the positioning mechanism 4. A fixing belt 3 is connected between the two groups of pressing mechanisms 2. When the two groups of pressing mechanisms 2 are running, the fixing belt 3 will be driven down synchronously. By changing the height of the fixing belt 3, the animal can be fixed. Compared with the traditional through slot, the first limiting slide groove 14 and the second limiting slide groove 15 provided in the device effectively solve the problem of fixing the position of the traditional through slot, increase the moving stroke of the pressing mechanism 2, and can adapt to animals of different sizes. Compared with the fixing operation of the traditional fixing belt 3, the pressing mechanism 2 provided in the device effectively solves the problem of inconvenient connection of the two ends of the fixing belt 3, improves the work efficiency, and has a good use effect.

[0028] Compared with the traditional fixing device, the present device is also provided with a fixing frame 1 and a fixing belt 3. The difference between the fixing frame 1 and the fixing frame 1 is that the fixing frame 1 of the present device includes a lower plate frame 11, an upper plate frame 12 and a support rod 13, wherein the upper plate frame 12 is located on one side of the top of the lower plate frame 11 and is fixedly connected to the top of the lower plate frame 11 through the support rod 13, and the first limiting slide groove 14, the second limiting slide groove 15 and the positioning card groove 16 are sequentially opened on the top of the upper plate frame 12 from the inside to the outside. The fixing frame 1 of the present device is composed of a lower plate frame 11 and an upper plate frame 12, and there is a set space between the lower plate frame 11 and the upper plate frame 12, and through The support rod 13 is supported, and the interval setting space is convenient for hand operation. The structure is simple and the use effect is good. Compared with the traditional fixed position through grooves, the first limit slide groove 14 and the second limit slide groove 15 are longer, so that the pressing mechanism 2 can be moved freely on the top of the upper plate frame 12, which is more convenient to adjust the position according to the animal's body shape and has strong practicality. The positioning slot 16 is used to fix the position of the pressing mechanism 2 by cooperating with the positioning mechanism 4 after the position of the pressing mechanism 2 is adjusted, thereby effectively preventing the pressing mechanism 2 from being displaced and ensuring stable fixation.

[0029] The difference of the fixing belt 3 is that the two ends of the fixing belt 3 in the present device are not connected by Velcro, but are directly fixed on the pressing mechanism 2. When the pressing mechanism 2 is running, the two ends of the fixing belt 3 will be driven down synchronously. The decline of the two ends of the fixing belt 3 will simultaneously drive the overall height of the fixing belt 3 to decrease, thereby fixing the animal. It should also be noted that a plurality of groups of metal soft strips are also arranged inside the fixing belt 3 of the present device. The metal soft strips make the fixing belt 3 in a specific arc shape, which is convenient for placing mice without affecting its fixing effect.

[0030] The positioning mechanism 4 in the device has the following structure. The positioning mechanism 4 includes a positioning seat 41 , a second spring 42 and a handle 43 .

[0031] When in use, pulling the handle 43 can drive the positioning seat 41 to separate from the positioning slot 16 and stretch the second spring 42. After the positioning seat 41 is separated from the positioning slot 16, the position of the slide 21 is no longer fixed, so the slide 21 can freely adjust its position. Release the handle 43, and the positioning seat 41 will reset under the elastic force of the second spring 42 and be re-engaged and fixed to the positioning slot 16. After the positioning seat 41 is engaged and fixed to the positioning slot 16, the slide 21 is limited synchronously to effectively prevent it from displacement and improve the fixing stability.

[0032] The specific position and connection relationship of the above structure are as follows: the positioning seat 41 is located on the outside of the positioning slot 16; a positioning column 411 is evenly arranged on the side surface of the lower end of the positioning seat 41 close to the positioning slot 16, and is adapted to the outer size of the positioning slot 16; one end of the positioning column 411 is located inside the positioning slot 16, and is fixed to the inner wall of the positioning slot 16; a handle 43 is arranged on the side surface of the lower end of the positioning seat 41 away from the positioning slot 16; a guide shaft is symmetrically arranged on the end surface of the upper end of the positioning seat 41 close to the slide 21; one end of the guide shaft is slidably connected to the inner wall of one end of the slide 21, and a second spring 42 is fixedly connected between the surface of one end of the slide 21; the guide shaft design not only plays a guiding and limiting role, but also facilitates the adjustment of the position of the positioning seat 41, and the use effect is good.

[0033] The structure of the pressing mechanism 2 in the present device is as follows: the pressing mechanism 2 includes a slide 21, a square groove 22, a limit roller 23, a lifting plate 24, a synchronous plate 25, a positioning cylinder 26, a positioning column 27, a first spring 28, a rectangular slot 29 and a conical elastic clamp 210.

[0034] When in use, pressing the positioning column 27 can drive the synchronous plate 25 and the lifting plate 24 to descend. The descent of the lifting plate 24 synchronously drives the two ends of the fixing belt 3 to descend. The descent of the two ends of the fixing belt 3 synchronously drives the overall height of the fixing belt 3 to decrease, thereby fixing the animal on the inner side of the fixing belt 3. In order to keep the lifting plate 24 stable, the device is specially provided with a limiting roller 23 on the inner wall of the square groove 22, and it fits with the surface of the lifting plate 24. In order to keep the fixation more stable, the device is also provided with a rectangular slot 29 and a conical elastic clip 210. When the conical elastic clip 210 is engaged with the rectangular slot 29, the position of the positioning column 27 inside the positioning cylinder 26 is also fixed accordingly. The position of the positioning column 27 is fixed, and the positions of the synchronous plate 25 and the lifting plate 24 are also fixed accordingly, so as to achieve stable restraint force. Among them, there are multiple groups of rectangular slots 29, and multiple groups of rectangular slots 29 correspond to different descending heights and different restraint forces, and the use effect is good.

[0035] The specific position and connection relationship of the above structure are as follows: the slide 21 is arranged on the top of the upper plate frame 12, and the bottom of the slide 21 is slidably connected to the inner wall of the first limiting slide groove 14 and the inner wall of the second limiting slide groove 15 respectively; the square groove 22 is opened at the top of one end of the slide 21 and corresponds to the position of the first limiting slide groove 14; the limiting roller 23 is rotatably connected to the inner wall of the square groove 22, and the lifting plate 24 is slidably connected to the inner wall of the square groove 22 and is located on one side of the limiting roller 23, and the surface of the lifting plate 24 is in contact with the surface of the limiting roller 23; one end of the lifting plate 24 passes through the top of the square groove 22 and is fixedly connected to the fixing belt 3, and the other end of the lifting plate 24 passes through the bottom of the upper plate frame 12 and is fixedly connected to the synchronization plate 25; The positioning cylinder 26 is threadedly connected to the top of the slide seat 21 and is located on one side of the square groove 22. The positioning cylinder 26 corresponds to the position of the second limiting slide groove 15; the positioning column 27 is vertically slidably connected to the inner wall of the positioning cylinder 26, one end of the positioning column 27 passes through the top of the positioning cylinder 26, and a first spring 28 is fixedly connected to the top of the positioning cylinder 26, and the other end of the positioning column 27 passes through the bottom of the upper plate frame 12 and is fixedly connected to the top of one end of the synchronous plate 25; a rectangular slot 29 and a conical elastic clip 210 are respectively provided at the positions corresponding to the positions of the surface of the positioning cylinder 26 and the surface of the positioning column 27, one end of the conical elastic clip 210 is located inside the rectangular slot 29 and is fixedly connected to the inner wall of the rectangular slot 29. It should be noted that there are multiple groups of limit rollers 23, and the multiple groups of limit rollers 23 are rotatably connected to the inner wall of the square groove 22 and fit with the surface of the lifting plate 24, so as to guide and limit the lifting plate 24, effectively improving its lifting stability. In order to improve the lifting stability of the synchronous plate 25, the device is respectively provided with a key and a key groove at the position corresponding to the position of the inner wall of the positioning cylinder 26 on the surface of the positioning column 27, and the key is slidably connected to the inner wall of the key groove, and a guide cylinder 201 is symmetrically arranged at the bottom of the slide seat 21 corresponding to the position of the second limit slide groove 15, and a guide rod 251 is symmetrically arranged at the top of the synchronous plate 25 corresponding to the position of the second limit slide groove 15; and one end of the guide rod 251 is located inside the guide cylinder 201 and is slidably connected to the inner wall of the guide cylinder 201, and the guide rod 251 cooperates with the guide cylinder 201 to further improve the structural stability of the synchronous plate 25 when it is lifted or lowered.

[0036] The operating principle of the pressing mechanism 2 is as follows: when fixing the mouse, place the mouse on the inner side of the arc-shaped fixing belt 3, and then press the positioning column 27. The positioning column 27 descends vertically along the inner wall of the positioning tube 26 and compresses the first spring 28. At the same time, the descent of the positioning column 27 also synchronously drives the synchronous plate 25 and the lifting plate 24 to descend. The lifting plate 24 descends along the inner wall of the square groove 22 and the surface of the limiting roller 23, and synchronously drives the fixing belt 3 to descend. The descent of the fixing belt 3 fixes the mouse on the inner side of the fixing belt 3. When the conical elastic clip 210 moves to the position of the rectangular slot 29 and is clamped and fixed with the rectangular slot 29, the position of the fixing belt 3 is also fixed, and the binding force is also stabilized.

[0037] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A fixation device for experimental animal irradiation assistance, characterized in that: It comprises a fixing frame (1), a pressing mechanism (2), a fixing belt (3) and a positioning mechanism (4), wherein: The top of the fixing frame (1) is provided with a first limiting sliding groove (14), a second limiting sliding groove (15) and a positioning slot (16) in order from the inside to the outside; The pressing mechanism (2) is provided with two groups, and the two groups of pressing mechanisms (2) are respectively slidably connected to the inner wall of the first limiting sliding groove (14) and the inner wall of the second limiting sliding groove (15), and are arranged in opposite directions; The fixing belt (3) is connected between the two groups of the pressing mechanisms (2); The two groups of pressing mechanisms (2) are respectively connected and fixed to the positioning slots (16) via the positioning mechanisms (4).

2. The fixation device for experimental animal irradiation assistance according to claim 1, characterized in that: The fixing frame (1) comprises a lower frame (11), an upper frame (12) and a support rod (13), wherein: The upper plate frame (12) is located on one side of the top of the lower plate frame (11), and is fixedly connected to the top of the lower plate frame (11) through the support rod (13); The first limiting sliding groove (14), the second limiting sliding groove (15) and the positioning slot (16) are sequentially arranged on the top of the upper plate frame (12) from the inside to the outside.

3. The fixation device for experimental animal irradiation assistance according to claim 2, characterized in that: The pressing mechanism (2) comprises a slide seat (21), a square groove (22), a limiting roller (23), a lifting plate (24), a synchronous plate (25), a positioning cylinder (26), a positioning column (27), a first spring (28), a rectangular slot (29) and a conical elastic clamp (210), wherein: The slide seat (21) is arranged on the top of the upper plate frame (12), and the bottom of the slide seat (21) is slidably connected to the inner wall of the first limiting slide groove (14) and the inner wall of the second limiting slide groove (15); The square groove (22) is opened at the top of one end of the slide seat (21) and corresponds to the position of the first limiting slide groove (14); The limiting roller (23) is rotatably connected to the inner wall of the square groove (22), the lifting plate (24) is slidably connected to the inner wall of the square groove (22) and is located on one side of the limiting roller (23), and the surface of the lifting plate (24) is in contact with the surface of the limiting roller (23); One end of the lifting plate (24) passes through the top of the square groove (22) and is fixedly connected to the fixing belt (3), and the other end of the lifting plate (24) passes through the bottom of the upper plate frame (12) and is fixedly connected to the synchronization plate (25); The positioning cylinder (26) is threadedly connected to the top of the slide seat (21) and is located on one side of the square groove (22), and the positioning cylinder (26) corresponds to the position of the second limiting slide groove (15); The positioning column (27) is vertically slidably connected to the inner wall of the positioning cylinder (26), one end of the positioning column (27) passes through the top of the positioning cylinder (26), and the first spring (28) is fixedly connected to the top of the positioning cylinder (26), and the other end of the positioning column (27) passes through the bottom of the upper plate frame (12) and is fixedly connected to the top of one end of the synchronous plate (25); The rectangular slot (29) and the conical elastic clip (210) are respectively provided at positions corresponding to the positions on the surface of the positioning cylinder (26) and the surface of the positioning column (27); one end of the conical elastic clip (210) is located inside the rectangular slot (29) and is fixedly engaged with the inner wall of the rectangular slot (29).

4. The fixation device for experimental animal irradiation assistance according to claim 3, characterized in that: A guide cylinder (201) is symmetrically arranged at a position corresponding to the second limiting sliding groove (15) at the bottom of the slide seat (21), and a guide rod (251) is symmetrically arranged at a position corresponding to the second limiting sliding groove (15) at the top of the synchronization plate (25); One end of the guide rod (251) is located inside the guide cylinder (201) and is slidably connected to the inner wall of the guide cylinder (201).

5. The fixation device for experimental animal irradiation assistance according to claim 3, characterized in that: The positioning mechanism (4) comprises a positioning seat (41), a second spring (42) and a pull handle (43), wherein: The positioning card seat (41) is located outside the positioning card slot (16); A positioning post (411) is evenly arranged on a side surface of the lower end of the positioning card seat (41) close to the positioning card slot (16) and is adapted to the outer dimensions of the positioning card slot (16); one end of the positioning post (411) is located inside the positioning card slot (16) and is fixedly engaged with the inner wall of the positioning card slot (16); The handle (43) is provided on a side surface of the lower end of the positioning card seat (41) away from the positioning card slot (16); A guide shaft is symmetrically arranged on the upper end of the positioning seat (41) near one end surface of the slide seat (21); one end of the guide shaft is slidably connected to the inner wall of one end of the slide seat (21), and the second spring (42) is fixedly connected between the guide shaft and the one end surface of the slide seat (21).

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