Experimental animal fixing device

Abstract

The utility model belongs to the technical field of experimental equipment, and particularly relates to an experimental animal fixing device which comprises a frame body, a plurality of adjusting pieces and a flexible fixing body. The frame body comprises two bent plates and double-end bolts used for connecting the two bent plates, the space between the bottoms of the two bent plates is an experimental animal placing area, and a plurality of mounting holes are formed in the two bent plates along the shapes of the bent plates; the plurality of adjusting pieces are arranged on the bent plate, each adjusting piece comprises a fastening piece and a connecting rod, and the position of the end part of the connecting rod in the experimental animal placing area can be adjusted by unscrewing the fastening pieces; the at least two flexible fixing bodies are connected with the ends of the multiple connecting rods respectively and arranged in the experimental animal containing area, the flexible fixing bodies can be tightly attached to the limbs of the experimental animals and the trunks of the limbs, different experimental animals with large body type differences can be fixed, and operation is easy and fast. In addition, the space between the two bent plates enables the trunk of the animal to be exposed, and hindrance to experiment operation is reduced.

Description

Technical Field

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

[0002] In fields such as medicine and pharmacology, animals of different species and sizes are usually used as experimental subjects according to experimental requirements. For example, pharmacokinetic studies, peripheral nerve studies, liver function and metabolism studies all require animals of different sizes to be fixed in order to obtain stable experimental conditions.

[0003] Existing animal fixation devices for experiments have the following shortcomings during use: for animals with large differences in body size, fixation devices of different specifications are required, and they cannot be universal; most of them fix the limbs, and in order to prevent excessive struggling, the torso needs to be fixed, which blocks the torso and hinders some experimental operations; the fixing and untying operations are cumbersome. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an experimental animal fixing device, which can fix different experimental animals with large body size differences and is simple and quick to operate.

[0005] The content of this utility model includes:

[0006] The frame body comprises two bent plates and stud bolts for connecting the two bent plates. The bottom of the two bent plates and the space between them are the experimental animal placement areas. The two bent plates are provided with a plurality of mounting holes along their own shapes. The two ends of the two stud bolts are respectively passed through the mounting holes near the two ends of the two bent plates and fastened by nuts.

[0007] A plurality of adjusting members are arranged on the bent plate, wherein the adjusting members include fasteners passing through the mounting holes and connecting rods fixed by the fasteners and the bent plate, and the position of the end of the connecting rod in the experimental animal placement area can be adjusted by loosening the fasteners; and

[0008] At least two flexible fixing bodies are respectively connected to the ends of a plurality of connecting rods and are arranged in the experimental animal placement area. The flexible fixing bodies can be closely attached to the limbs and the trunk of the experimental animal at the limbs.

[0009] Optionally, the fastener includes a stud and a cap body rigidly connected to the end of the stud, and a portion of the cap body protruding from one side of the stud is provided with a limiting groove for fixing the connecting rod.

[0010] Optionally, the limiting groove is a U-shaped groove.

[0011] Optionally, the flexible fixed body includes a long flexible portion 1 and a plurality of sliders embedded and slidably connected to one side of the flexible portion 1; the sliders are fixedly connected to the ends of the connecting rods.

[0012] Optionally, a sliding groove with a convex U-shaped cross section is provided on one side of the flexible portion, and the cross section of the sliding block is convex U-shaped.

[0013] Optionally, the flexible fixed body further comprises a flexible portion 2 arranged on a side of the flexible portion 1 facing away from the slider, and the elastic modulus of the flexible portion 1 is greater than the elastic modulus of the flexible portion 2.

[0014] Optionally, a surface of the flexible portion 2 that is away from the flexible portion 1 is a straight surface, an arcuate surface, or a middle portion is a straight surface and both ends are arcuate surfaces.

[0015] Optionally, the flexible portion 2 is adhered to the flexible portion 1 by means of a self-adhesive adhesive.

[0016] Optionally, the flexible portion 1 is provided with a plurality of narrow grooves along its length path, and each narrow groove runs through two sides of the flexible portion 1.

[0017] Optionally, the bent plate is an arc-shaped plate or a U-shaped plate.

[0018] Optionally, the frame further includes a plurality of reinforcing and stabilizing members, one end of each reinforcing and stabilizing member is passed through a mounting hole and fastened by a nut, and the other end is movably sleeved on a stud bolt.

[0019] Optionally, the reinforcing stabilizing member includes an arm and a pillar, one end of the arm passes through the mounting hole and is fastened by a nut, the pillar passes through one end of the arm away from the bent plate and is fastened by a nut, the bottom end of the pillar is movably mounted on a stud bolt, and the arm is provided with a plurality of adjustment holes along its length for the pillar to pass through.

[0020] The beneficial effect of the utility model is that the distance between the two bent plates can be adjusted by the stud bolts so that the adjustment pieces arranged on the two bent plates correspond to the front and rear limbs of the animal respectively, so as to adapt to animals of different body lengths. When the fasteners are loosened, the fasteners can rotate freely in the mounting holes, and the connecting rods and the flexible fixing bodies can fall down. One flexible fixing body can be naturally fitted on the limbs and the trunk of the animal, or multiple flexible fixing bodies can be respectively fitted on the limbs and the trunk of the animal. Through the weight of the connecting rod and the flexible fixing body themselves or by slightly applying a force by hand, the flexible fixing body is appropriately and tightly attached to the animal body, and then the nut on the fastener is tightened to fix the connecting rod, thereby being able to fix different experimental animals with large body size differences, and the operation is simple and quick. In addition, the space between the two bent plates exposes the trunk of the animal, reducing obstacles to experimental operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of the fixing device provided by the utility model;

[0022] Figure 2 A schematic diagram of the structure of the fastener provided by the utility model;

[0023] Figure 3 A schematic diagram of the cross-sectional structure of the flexible fixing body provided by the utility model;

[0024] Figure 4 A partial side view of the flexible fixing body provided by the utility model;

[0025] Figure 5 A structural schematic diagram of a bent plate provided by the utility model;

[0026] Figure 6 A structural schematic diagram of the bent plate provided by the utility model.

[0027] In the figure: 10, frame; 11, bent plate; 111, mounting hole; 12, stud bolt; 13, reinforcing stabilizer; 131, support arm; 132, support column; 133, adjustment hole; 20, adjustment member; 21, fastener; 211, stud; 212, cap body; 213, limit groove; 22, connecting rod; 30, flexible fixing body; 31, flexible part 1; 311, slide groove; 312, narrow groove; 32, slider; 33, flexible part 2. DETAILED DESCRIPTION

[0028] like Figure 1-6 As shown, the utility model provides an experimental animal fixing device, comprising: a frame 10, a plurality of adjustment members 20 and at least two flexible fixing bodies 30; the frame 10 comprises two bent plates 11 and stud bolts 12 for connecting the two bent plates 11, the bottom of the two bent plates 11 and the space between them are experimental animal placement areas, the two bent plates 11 are provided with a plurality of mounting holes 111 along their own shapes, the two ends of the two stud bolts 12 are respectively penetrated through the mounting holes 111 near the two ends of the two bent plates 11, and are fastened by nuts; a plurality of adjustment members 20 are arranged on the bent plates 11, the adjustment members 20 comprise fasteners 21 penetrated through the mounting holes 111 and connecting rods 22 fixed by the fasteners 21 and the bent plates 11, and the position of the ends of the connecting rods 22 in the experimental animal placement area can be adjusted by loosening the fasteners 21; at least two flexible fixing bodies 30 are respectively connected to the ends of the plurality of connecting rods 22 and are arranged in the experimental animal placement area, and the flexible fixing bodies 30 can be closely attached to the limbs and the trunk of the experimental animals at the limbs.

[0029] Compared with the prior art, the experimental animal fixing device provided by the utility model can adjust the spacing between the two bent plates 11 through the stud bolts 12 so that the adjustment pieces 20 arranged on the two bent plates 11 correspond to the front and rear limbs of the animal respectively, so as to adapt to animals of different body lengths. When the fastener 21 is loosened, the fastener 21 can rotate freely in the mounting hole 111, and the connecting rod 22 and the flexible fixing body 30 will fall down. It can be that one flexible fixing body 30 fits naturally on the limbs and the trunk of the animal, or it can be that multiple flexible fixing bodies 30 fit on the limbs and the trunk of the animal respectively. Through the weight of the connecting rod 22 and the flexible fixing body 30 themselves or by slightly applying a force by hand, the flexible fixing body 30 is appropriately and tightly attached to the animal body, and then the nut on the fastener 21 is tightened to fix the connecting rod 22, so that different experimental animals with large body size differences can be fixed, and the operation is simple and quick; in addition, the space between the two bent plates 11 exposes the animal trunk, reducing obstacles to experimental operations.

[0030] In this embodiment, please refer to Figure 2 The fastener 21 includes a stud 211 and a cap body 212 rigidly connected to the end of the stud 211 , and a portion of the cap body 212 protruding from one side of the stud 211 is provided with a limiting groove 213 for fixing the connecting rod 22 .

[0031] Specifically, the bolt and the cap body 212 are integrally formed or welded and fixed, with a structure similar to that of the bolt, except that the cap body 212 is not a cylindrical structure. The cap body 212 has a protrusion that deviates from the stud 211, and a limiting groove 213 is opened on the side of the protrusion close to the stud 211. The connecting rod 22 passes through the limiting groove 213. When the nut on the stud 211 is tightened, the cap body 212 cooperates with the bent plate 11 to clamp and fix the connecting rod 22. Slightly loosen the nut, the connecting rod 22 can slide along the limiting groove 213, and the fastener 21 can rotate.

[0032] In one embodiment, an adjusting member 20 is respectively provided at two different mounting holes 111 on each bent plate 11, and the specific position is determined according to the body shape of the animal to be fixed. The ends of the connecting rods 22 on the two adjusting members 20 are fixed to a flexible fixing body 30, and the flexible fixing body 30 can be appropriately bent and elastically deformed to fit the animal body as closely as possible, and then the above-mentioned operation is performed to complete the fixation. When releasing, the reverse operation can be performed.

[0033] In another embodiment, an adjusting member 20 is respectively arranged at four different mounting holes 111 on each curved plate 11, and the specific position is determined according to the size of the animal to be fixed. The ends of the connecting rods 22 on every two adjusting members 20 are fixed to a flexible fixing body 30, so that the front and rear limbs of the animal can be fixed by two flexible fixing bodies 30 respectively, so that animals of more sizes can be fixed. Similarly, 5 or 6 adjusting members 20 can also be arranged on each curved plate 11, so that more flexible fixing bodies 30 can be arranged, thereby improving the reliability of animal fixation.

[0034] In this embodiment, the limiting groove 213 is a U-shaped groove, which can better fit the connecting rod 22 and facilitate the adjustment of the connecting rod 22.

[0035] In this embodiment, please refer to Figure 3 The flexible fixed body 30 includes a long flexible portion 31 and a plurality of sliders 32 embedded and slidably connected to one side of the flexible portion 31 ; the sliders 32 are fixedly connected to the end of the connecting rod 22 .

[0036] Specifically, the flexible portion 31 is made of rubber with a certain toughness, the slider 32 can be made of the same material as the flexible portion 31, or can be made of metal material, the slider 32 and the connecting rod 22 are fixed by bonding, welding or screwing, and when the flexible portion 31 is attached to the animal body, the slider 32 can slide adaptively, so that the flexible portion 31 can be deformed smoothly, and can have a higher fit, which is conducive to fixing the animal (including limbs and other parts).

[0037] In one embodiment, a slide groove 311 with a convex cross section is provided on one side of the flexible portion 1 31, and the cross section of the slider 32 is convex. Thus, the slider 32 slides along the slide groove 311 and is difficult to escape from the slide groove 311, ensuring that the slider 32 and the flexible portion 1 31 are not easily separated.

[0038] In one embodiment, the flexible fixed body 30 further includes a second flexible portion 33 disposed on a side of the first flexible portion 31 away from the slider 32 , and the elastic modulus of the first flexible portion 31 is greater than the elastic modulus of the second flexible portion 33 .

[0039] Specifically, the flexible portion 33 can be made of rubber, latex or silicone that is more easily elastically deformed, thereby further improving the fit with the animal's body and reducing potential harm to the animal.

[0040] Furthermore, the side of the flexible part 2 33 away from the flexible part 1 31 is a flat surface, an arcuate surface, or a flat surface in the middle and arcuate surfaces at both ends. The selection is based on different animals or fixed parts, with the purpose of improving the fit with the animal body.

[0041] In one embodiment, in order to facilitate replacement of the flexible portion 2 33 of different specifications, the flexible portion 2 33 is adhered to the flexible portion 1 31 by adhesive tape.

[0042] In this embodiment, please refer to Figure 4 The flexible portion 31 is provided with a plurality of narrow grooves 312 along its length path, and each narrow groove 312 runs through both sides of the flexible portion 31. In this way, the flexible portion 31 can be prevented from being bent at an angle during adaptive deformation, making the flexible portion 31 easier to deform without reducing toughness, thereby ensuring the stability of the structure and preventing the slider 32 from falling out, thereby improving the fit with the animal body.

[0043] In this embodiment, please refer to Figure 1 , Figure 5 and Figure 6 The bent plate 11 is an arc-shaped plate or a U-shaped plate, and the arc-shaped plate includes a circular arc plate or an elliptical plate, which can be selected according to the needs.

[0044] In this embodiment, please refer to Figure 1 The frame 10 further includes a plurality of reinforcing stabilizers 13, one end of which is inserted into the mounting hole 111 and fastened by a nut, and the other end is movably sleeved on the stud bolt 12. In this way, the mechanical strength of the connection structure between the bent plate 11 and the stud bolt 12 can be improved, thereby improving the mechanical strength of the entire frame 10.

[0045] Specifically, the reinforcing stabilizer 13 includes a support arm 131 and a support column 132. One end of the support arm 131 passes through the mounting hole 111 and is fastened by a nut. The support column 132 passes through the end of the support arm 131 away from the bent plate 11 and is fastened by a nut. The bottom end of the support column 132 is movably sleeved on the stud bolt 12. The support arm 131 is provided with a plurality of adjustment holes 133 along its length direction for the support column 132 to pass through. Since the position of each mounting hole 111 is different, the end of the support column 132 is rotatably connected to the stud bolt 12 and can pass through the adjustment hole 133 of the support arm 131. The support column 132 is provided with a thread. The support column 132 is fastened to the support arm 131 by two upper and lower nuts. The arm length of the support arm 131 can be adjusted through different adjustment holes 133, so as to achieve the effect of strengthening the mechanical strength of the frame 10 to adapt.

[0046] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of protection of the present application is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0047] One or more embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present application should be included in the protection scope of the present application.

Claims

1. A device for fixing experimental animals, It is characterized in that include: A frame (10); the frame (10) comprises two bent plates (11) and stud bolts (12) for connecting the two bent plates (11); the bottoms of the two bent plates (11) and the space between them are areas for placing experimental animals; the two bent plates (11) are provided with a plurality of mounting holes (111) along their shapes; the two ends of the two stud bolts (12) are respectively passed through the mounting holes (111) near the two ends of the two bent plates (11) and are fastened by nuts; a plurality of adjusting members (20) disposed on the bent plate (11), the adjusting members (20) comprising a fastener (21) passing through the mounting hole (111) and a connecting rod (22) fixed by the fastener (21) and the bent plate (11), wherein the position of the end of the connecting rod (22) in the experimental animal placement area can be adjusted by loosening the fastener (21); and At least two flexible fixing bodies (30) are respectively connected to the ends of the plurality of connecting rods (22) and are arranged in the experimental animal placement area. The flexible fixing bodies (30) can be closely attached to the limbs and the trunk of the experimental animal at the limbs.

2. The experimental animal fixing device according to claim 1, It is characterized in that The fastener (21) comprises a stud (211) and a cap body (212) rigidly connected to the end of the stud (211); a portion of the cap body (212) protruding from one side of the stud (211) is provided with a limiting groove (213) for fixing the connecting rod (22).

3. The experimental animal fixing device according to claim 2, It is characterized in that The limiting groove (213) is a U-shaped groove.

4. The experimental animal fixing device according to claim 1, It is characterized in that The flexible fixed body (30) comprises a long flexible portion (31) and a plurality of sliding blocks (32) embedded and slidably connected to one side of the flexible portion (31); the sliding blocks (32) are fixedly connected to the end of the connecting rod (22).

5. The experimental animal fixing device according to claim 4, It is characterized in that A sliding groove (311) having a convex U-shaped cross section is provided on one side of the flexible portion (31), and the sliding block (32) has a convex U-shaped cross section.

6. The experimental animal fixing device according to claim 5, It is characterized in that The flexible fixed body (30) further comprises a flexible portion 2 (33) arranged on a side of the flexible portion 1 (31) facing away from the sliding block (32), and the elastic modulus of the flexible portion 1 (31) is greater than the elastic modulus of the flexible portion 2 (33).

7. The experimental animal fixing device according to claim 6, It is characterized in that The side of the second flexible portion (33) facing away from the first flexible portion (31) is a straight surface, an arcuate surface, or a straight surface in the middle and arcuate surfaces at both ends.

8. The experimental animal fixing device according to claim 7, It is characterized in that The second flexible portion (33) is adhered to the first flexible portion (31) by means of a self-adhesive adhesive.

9. The experimental animal fixing device according to any one of claims 1 to 7, It is characterized in that The bent plate (11) is an arc-shaped plate or a U-shaped plate.

10. The experimental animal fixing device according to any one of claims 1 to 7, It is characterized in that The frame (10) further comprises a plurality of reinforcing stabilizing members (13), one end of the reinforcing stabilizing member (13) being inserted into the mounting hole (111) and fastened by a nut, and the other end being movably sleeved on the stud bolt (12).

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