Fixing device for animal experiment

Abstract

The utility model discloses a fixing device for animal experiments, and belongs to the technical field of experimental equipment. The device comprises a supporting seat, a connecting table rotatably mounted on the supporting seat, and a fixing mechanism rotatably mounted on the connecting table, the fixing mechanism comprises a head fixing part, an upper limb fixing part, a lower limb fixing part and a tail fixing part; the head fixing part is fixed to the fixing mechanism, the upper limb fixing parts and the lower limb fixing parts are movably and symmetrically installed on the fixing mechanism, and the tail fixing part is movably installed on the fixing mechanism and connected between the lower limb fixing parts. The limbs and the tail of the mouse can be fixed by utilizing a plurality of fixing pieces; and moreover, the fixing device is adjustable and can be adjusted according to the size of an experimental mouse, so that a relatively good fixing effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to experimental equipment technical field, concretely relates to a fixing device for animal experiment. BACKGROUND

[0002] Animal experiment refers to the process of using animals as experimental objects for scientific research in the fields of biomedical research, drug development, toxicology, behavior, etc. This experimental method aims to explore biological mechanisms, test the safety and effectiveness of drugs, study the development of diseases, and evaluate environmental impacts. However, animals may struggle due to fear, pain, or discomfort during the experiment, affecting the accuracy and safety of the experiment. Therefore, a device that can stably and safely fix animals is needed to ensure the smooth progress of the experiment. The fixing device for animal experiment not only ensures the stability of the animals during the experiment, avoiding experimental errors caused by animal struggle, but also assists experimenters in more accurately observing and analyzing the physiological and pathological changes of animals, thereby promoting the development of biomedical research.

[0003] In the prior art, for example, a patent with publication number CN221130106U discloses an experimental animal fixing device, which includes a sleeve, a protective sleeve, a sleeve head cylinder, a fixing mechanism, and a limiting mechanism. The middle part of the sleeve is provided with an operation groove, and the inner wall of the sleeve is symmetrically fixedly connected with a connecting cylinder. The middle part of the sleeve is fixedly connected with a restraint belt, and the sleeve is provided with a through groove at a distance corresponding to the fixed end of the restraint belt. The bottom end of the connecting cylinder is provided with an external thread, and the bottom end of the connecting cylinder is provided with a protective sleeve. The inner wall of the protective sleeve is provided with an internal thread. The utility model fixes the back of the experimental mouse by cooperating the through groove with the magic tape smooth surface and the magic tape rough surface. The experimental mouse's head is inserted into the sleeve head cylinder, and the experimental mouse's limbs are fixed by two clamping blocks. This design fixes the mouse's head, back, and limbs on the sleeve, preventing movement during the experiment and not affecting the later experiment.

[0004] Although this device can fix the back and limbs of the experimental mouse, it cannot adjust the fixation according to the size of the mouse's body. It can only fix mice within a certain size range, which has a large limitation. At the same time, this device is not convenient for experimenters to operate, and the design of the sleeve makes the operation space of the experimenter smaller, indirectly increasing the difficulty of experimental operation. Moreover, this device cannot adjust the fixation angle when fixing the animal, which is not conducive to the experimenter's operation of the experiment. In summary, a new fixing device for animal experiment is needed to solve the above problems.

[0005] The information disclosed in this BACKGROUND section is only for the purpose of enhancing the understanding of the background of the present disclosure and should not be construed as acknowledging or implying in any form that it constitutes prior art known to those skilled in the art. Utility model content

[0006] In view of at least one of the above technical problems, the present disclosure provides a fixing device for animal experiments.

[0007] According to one aspect of the present disclosure, a fixing device for animal experiments is provided, comprising a support seat, a connecting table rotatably mounted on the support seat, and further comprising a fixing mechanism rotatably mounted on the connecting table; the fixing mechanism comprises a head fixing member, an upper limb fixing member, a lower limb fixing member, and a tail fixing member; the head fixing member is fixed on the fixing mechanism, the upper limb fixing member and the lower limb fixing member are movably and symmetrically mounted on the fixing mechanism, and the tail fixing member is movably mounted on the fixing mechanism and connected between the lower limb fixing members; the fixing members can not only fix the four limbs of the mouse, but also fix the tail of the mouse.

[0008] Further, the fixing mechanism further comprises a first slot, a second slot and a third slot opened therein; the upper limb fixing member is movably clamped in the first slot, the lower limb fixing member is movably clamped in the second slot, and the tail fixing member is movably clamped in the third slot; by cooperating the slots with the corresponding fixing members, the position of the fixing members can be adjusted according to the size of the experimental mouse, so as to achieve better fixing effect.

[0009] Further, the lower limb fixing member comprises a movable block clamped in the second slot, a limiting column fixed on the movable block, a clamping block movably sleeved on the limiting column, and a limiting plate; a limiting nut is further sleeved on the limiting column on the limiting plate, and a tightening spring is further sleeved on the limiting column between the limiting plate and the clamping block; by using the tightening spring, the clamping block can be pushed against the movable block to achieve the fixing effect.

[0010] Further, the movable block is further provided with a lower gasket, the clamping block is further provided with an upper gasket downward, and a control block is further mounted on the upper surface of the clamping block, and the control block is movably penetrated in the limiting plate; by cooperating the lower gasket with the upper gasket, the fixing effect can be better.

[0011] Further, the tail fixing member comprises a clamp frame connected between the movable blocks, a tail clamping block symmetrically and movably clamped in the clamp frame, a tail clamping spring connected between the clamp frame and the tail clamping block, and a movable rod movably penetrated in the clamp frame; the movable rod is connected with the tail clamping block, and a control handle is further provided on the outer end of the movable rod; by using the tail clamping block and the tail clamping spring, the automatic clamping work of the mouse tail can be realized.

[0012] Further, the back of the upper limb fixing member is rotatably provided with a driven screw, a pointed gear is further fixed at the middle position of the driven screw, and symmetrical forward threads and reverse threads are formed in the driven screw; the driven screw cooperates with the forward threads and the reverse threads to drive the upper limb fixing member to move to the middle.

[0013] Further, the fixing mechanism further comprises a driven gear and a driving screw mounted on the back thereof; the driving screw is further provided with lower threads and upper threads, and a screw motor is further connected to the end of the driving screw, the lower threads are provided in the movable block, and the upper threads are engaged with the pointed gear; the driving screw can simultaneously drive the upper limb fixing member and the lower limb fixing member to move synchronously.

[0014] Further, the connecting table is further provided with a connecting assembly and a driving gear, the driving gear is engaged with the driven gear, and a gear motor connected with the driving gear is further arranged on the front face of the connecting table; the driving gear can indirectly drive the rotation of the fixing mechanism through the driven gear.

[0015] Further, the connecting assembly comprises connecting shafts symmetrically clamped on the supporting seat, a connecting turntable fixed on the outer end of one of the connecting shafts, and a limiting tube fixed on the connecting turntable; a fixing screw is further provided in the limiting tube and simultaneously provided in the supporting seat; the fixing screw cooperates with the connecting shafts to realize the adjustment and fixation of the angle of the fixing mechanism.

[0016] The one or more technical solutions provided in the embodiments have at least the following technical effects or advantages:

[0017] 1. The upper limb fixing member, the lower limb fixing member and the tail fixing member adopted by the device can simultaneously fix the four limbs and the tail of the mouse; moreover, they are all adjustable, and can be adjusted according to the size of the experimental mouse to achieve a better fixing effect; when adjusting, the driving screw is rotated to cooperate with the rotation of the driven screw, so that the multiple fixing members can be synchronously adjusted, and the operation is simple and convenient.

[0018] 2. In the device, the connecting assembly and the driving gear can realize the adjustment of the direction and the angle of the fixing mechanism, and the flexible adjustment of the fixing mechanism not only allows the experimental animals to maintain different body positions in the experiment, thereby meeting various experimental requirements, but also can easily rotate the fixing device according to the needs, so that the experimental animals are more easily accessed and operated, and the convenience and efficiency of the experiment are improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the fixing device in the utility model;

[0020] Figure 2 It is Figure 1Enlarged view of part A;

[0021] Figure 3 The top view of the fixing device in the utility model;

[0022] Figure 4 The local structure schematic view of the fixing mechanism in the utility model;

[0023] Figure 5 The back structure schematic view of the fixing mechanism and the connecting table in the utility model;

[0024] Figure 6 For Figure 5 Enlarged view of part B.

[0025] In the above figures, 1, support seat; 2, connecting table; 21, connecting assembly; 211, connecting shaft; 212, connecting turntable; 213, fixed screw rod; 214, limiting tube; 22, driving gear; 23, gear motor; 3, fixing mechanism; 31, head fixing part; 32, upper limb fixing part; 321, driven screw rod; 3211, pointed gear; 3212, forward thread; 3213, reverse thread; 33, lower limb fixing part; 331, movable block; 3311, lower gasket; 332, clamping block; 3321, upper gasket; 3322, control block; 333, limiting plate; 334, limiting column; 335, fastening spring; 336, limiting nut; 34, tail fixing part; 341, clamp frame; 342, clamping tail block; 343, movable rod; 3431, control handle; 344, clamping tail spring; 35, first notch; 36, second notch; 37, third notch; 38, driven gear; 39, driving screw rod; 391, lower thread; 392, upper thread; 393, screw motor. DETAILED DESCRIPTION

[0026] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The "first", "second" and the like referred to in the present application are used to distinguish the described objects and do not have any sequential or technical meaning. Unless otherwise specified, the "connection" and "coupling" referred to in the present application include direct and indirect connection (coupling).

[0027] The embodiment of the present application provides a fixing device for animal experiments to solve some problems in the prior art, so that the technical scheme of the present application can be better understood, and the above technical scheme will be described in detail in combination with the drawings of the specification and specific embodiments.

[0028] The example discloses a fixing device for animal experiments, referring to Figures 1-6 , comprising a support seat 1, a connecting table 2 rotatably installed on the support seat 1, and a fixing mechanism 3 rotatably installed on the connecting table 2; the fixing mechanism 3 comprises a head fixing part 31, an upper limb fixing part 32, a lower limb fixing part 33, and a tail fixing part 34; the head fixing part 31 is fixed on the fixing mechanism 3, the upper limb fixing part 32 and the lower limb fixing part 33 are movably and symmetrically installed on the fixing mechanism 3, and the tail fixing part 34 is movably installed on the fixing mechanism 3 and connected between the lower limb fixing parts 33; the fixing device can not only fix the four limbs of a mouse, but also fix the tail of the mouse. The fixing mechanism 3 further comprises a first slot 35, a second slot 36, and a third slot 37 formed on the fixing mechanism 3; the upper limb fixing part 32 is movably clamped in the first slot 35, the lower limb fixing part 33 is movably clamped in the second slot 36, and the tail fixing part 34 is movably clamped in the third slot 37; the corresponding fixing parts can be adjusted in position according to the size of the experimental mouse by using the slot cooperation, so as to achieve a better fixing effect. The lower limb fixing part 33 comprises a movable block 331 clamped in the second slot 36, a limiting column 334 fixed on the movable block 331, a clamping block 332 movably sleeved on the limiting column 334, and a limiting plate 333; a limiting nut 336 is further sleeved on the limiting column 334 on the limiting plate 333, and a fastening spring 335 is further sleeved on the limiting column 334 between the limiting plate 333 and the clamping block 332; the clamping block 332 is pushed by the fastening spring 335 to cooperate with the movable block 331, so as to achieve a fixing effect. A lower gasket 3311 is further arranged on the movable block 331, a upper gasket 3321 is further arranged downward on the clamping block 332, a control block 3322 is further arranged on the upper surface of the clamping block 332, and the control block 3322 is movably arranged on the limiting plate 333; the fixing effect is better by using the cooperation of the lower gasket 3311 and the upper gasket 3321.

[0029] The tail fixing part 34 comprises a clamp frame 341 connected between the movable blocks 331, a tail clamping block 342 symmetrically and movably clamped in the clamp frame 341, a tail spring 344 connected between the clamp frame 341 and the tail clamping block 342, and a movable rod 343 movably arranged on the clamp frame 341; the movable rod 343 is connected with the tail clamping block 342, and a control handle 3431 is further arranged on the outer end of the movable rod 343; the tail clamping block 342 and the tail spring 344 are adopted to realize the automatic clamping of the tail of the mouse.

[0030] The back of the upper limb fixing member 32 is rotatably provided with a driven screw 321, a pointed gear 3211 is fixed at the middle position of the driven screw 321, and symmetrical forward threads 3212 and reverse threads 3213 are formed in the driven screw 321; the upper limb fixing member 32 can be moved to the middle position by cooperating the driven screw 321 with the forward threads 3212 and the reverse threads 3213.

[0031] The fixing mechanism 3 further comprises a driven gear 38 and a driving screw 39 installed on the back thereof; the driving screw 39 is further provided with lower threads 391 and upper threads 392, a screw motor 393 is connected to the end of the driving screw 39, the lower threads 391 pass through the movable block 331, and the upper threads 392 are engaged with the pointed gear 3211; the upper limb fixing member 32 and the lower limb fixing member 33 can be simultaneously moved synchronously by the driving screw 39.

[0032] The connecting assembly 21 and the driving gear 22 are further installed on the connecting table 2, the driving gear 22 is engaged with the driven gear 38, and a gear motor 23 connected with the driving gear 22 is further arranged on the front face of the connecting table 2; the rotation of the fixing mechanism 3 can be indirectly driven by the driving gear 22 through the driven gear 38. The connecting assembly 21 comprises connecting shafts 211 symmetrically clamped on the support base 1, a connecting turntable 212 fixed on the outer end of one of the connecting shafts 211, and a limiting tube 214 fixed on the connecting turntable 212; a fixing screw 213 is further arranged in the limiting tube 214 and simultaneously passes through the support base 1; the angle adjustment and fixation of the fixing mechanism 3 can be realized by cooperating the fixing screw 213 with the connecting shaft 211.

[0033] In the implementation of the device, first, according to the size of the experimental mouse, the fixing device is adjusted; when the fixing range needs to be reduced, the screw rod motor 393 is started to drive the driving screw rod 39 to rotate, and under the limiting of the lower thread 391, the lower limb fixing part 33 and the tail fixing part 34 move upward along the second slot 36 and the third slot 37 at the same time, and the rotating upper thread 392 drives the driven screw rod 321 through the engagement of the pointed gear 3211, and the upper limb fixing part 32 gradually moves to the middle under the action of the forward thread 3212 and the reverse thread 3213, thereby realizing the adjustment of the position of the fixing part. If the fixing range needs to be expanded, the reverse operation is performed. Then, the mouse is fixed, first, the head of the mouse is limited in the head fixing part 31, and then the limbs of the mouse are fixed. When fixing the lower limbs, the control block 3322 is manually pulled upward to open the gap between the clamping block 332 and the movable block 331, and then the lower limbs of the experimental mouse are placed on the movable block 331, and then the control block 3322 is slowly released. Under the pushing action of the tightening spring 335, the clamping block 332 moves downward and cooperates with the movable block 331 to clamp the lower limbs of the mouse, thereby realizing the fixation of the lower limbs of the mouse. When in use, the tightening force between the movable block 331 and the clamping block 332 can be indirectly adjusted by tightening the limiting nut 336 on the tightening spring 335. At the same time, the lower gasket 3311 and the upper gasket 3321 installed between the movable block 331 and the clamping block 332 are made of soft rubber material, which not only improves the fixing effect, but also improves the comfort of the mouse during fixation, avoiding the movement of the mouse. When fixing the upper limbs of the experimental mouse, the lower limb fixing operation is repeated. Since the experimental mouse will move when fixed, the fixing operation difficulty of the experimental personnel is improved, and the fixing part of the device can better assist the experimental personnel to quickly fix the experimental mouse by using the automatic clamping fixing method, which is convenient to operate. When the experiment needs to fix the tail of the mouse, the clamping tail block 342 is pulled to both sides under the limiting of the clamp frame 341 through the control handle 3431, and then the mouse tail is placed between the clamping tail block 342, and then the control handle 3431 is slowly released. The clamping tail spring 344 pushes the clamping tail block 342 to clamp the mouse tail, thereby achieving the fixing purpose. Since the tail fixing part 34 is connected with the lower limb fixing part 33, the position of the tail fixing part 34 can always correspond to the mouse tail of the experimental mouse.

[0034] In the experimental operation, for the convenience of the experimental personnel operation, the fixed mechanism 3 and the connecting table 2 can also be rotated and adjusted; when the fixed mechanism 3 is adjusted, the gear motor 23 is started to drive the driving gear 22 to rotate, the rotating driving gear 22 drives the driven gear 38 engaged with it to rotate, so as to realize the rotation of the fixed mechanism 3; when the connecting table 2 is adjusted, the fixed screw rod 213 is first turned out of the support seat 1, then the connecting turntable 212 is rotated and the connecting table 2 is driven to rotate through the connecting shaft 211, after rotating to the appropriate angle, the fixed screw rod 213 is aligned with the corresponding screw hole and rotated until the fixed screw rod 213 is turned into the support seat 1, achieving the purpose of fixing the device. The rotatable fixing device not only allows the experimental animals to maintain different body positions during the experiment, thereby meeting various experimental needs; but also can be easily rotated according to the needs, so as to more easily access and operate the experimental animals, improve the convenience and efficiency of the experiment.

[0035] Although some preferred embodiments of the present application have been described, those skilled in the art, once they know the basic creative concept, can make further changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0036] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A fixing device for animal experiments, comprising a support base (1) and a connecting table (2) rotatably mounted on the support base (1), characterized in that, The fixing mechanism (3) is rotatably installed on the connecting table (2); The fixing mechanism (3) comprises a head fixing part (31), an upper limb fixing part (32), a lower limb fixing part (33) and a tail fixing part (34); the head fixing part (31) is fixed on the fixing mechanism (3), the upper limb fixing part (32) and the lower limb fixing part (33) are movably and symmetrically installed on the fixing mechanism (3), and the tail fixing part (34) is movably installed on the fixing mechanism (3) and connected between the lower limb fixing parts (33).

2. The animal experiment fixing device according to claim 1, wherein The fixing mechanism (3) further comprises a first slot (35), a second slot (36) and a third slot (37) formed on the fixing mechanism (3); the upper limb fixing part (32) is movably clamped in the first slot (35), the lower limb fixing part (33) is movably clamped in the second slot (36), and the tail fixing part (34) is movably clamped in the third slot (37).

3. The fixation device for animal experiments according to claim 2, wherein The lower limb fixing part (33) comprises a movable block (331) clamped in the second slot (36), a limiting column (334) fixed on the movable block (331), a clamping block (332) movably sleeved on the limiting column (334) and a limiting plate (333); a limiting nut (336) is further sleeved on the limiting column (334) on the limiting plate (333), and a fastening spring (335) is further sleeved on the limiting column (334) between the limiting plate (333) and the clamping block (332).

4. The fixation device for animal experiments according to claim 3, wherein A lower gasket (3311) is further arranged on the movable block (331), and an upper gasket (3321) is further arranged downward on the clamping block (332), and a control block (3322) is further arranged on the upper surface of the clamping block (332), and the control block (3322) is movably arranged on the limiting plate (333).

5. The animal experiment fixing device according to claim 3, wherein The tail fixing part (34) comprises a clamp frame (341) connected between the movable blocks (331), a clamping tail block (342) symmetrically and movably clamped in the clamp frame (341), a clamping tail spring (344) connected between the clamp frame (341) and the clamping tail block (342), and a movable rod (343) movably arranged on the clamp frame (341); the movable rod (343) is connected with the clamping tail block (342), and a control handle (3431) is further arranged on the outer end of the movable rod (343).

6. The fixation device for animal experiments according to claim 3, wherein A driven screw rod (321) is rotatably arranged on the back of the upper limb fixing part (32), a pointed gear (3211) is further fixed on the middle position of the driven screw rod (321), and a symmetric forward thread (3212) and a reverse thread (3213) are further formed on the driven screw rod (321).

7. The animal experiment fixing device according to claim 6, wherein The fixing mechanism (3) further comprises a driven gear (38) and a driving screw rod (39) arranged on the back of the fixing mechanism (3); a lower thread (391) and an upper thread (392) are further formed on the driving screw rod (39), a screw motor (393) is further connected to the end of the driving screw rod (39), the lower thread (391) is arranged in the movable block (331), and the upper thread (392) is engaged with the pointed gear (3211).

8. The fixation device for animal experiments according to claim 7, wherein The connecting platform (2) is further provided with a connecting assembly (21) and a driving gear (22), the driving gear (22) is engaged with a driven gear (38), and a gear motor (23) connected with the driving gear (22) is arranged on the front surface of the connecting platform (2).

9. The animal experiment fixing device according to claim 8, wherein The connecting assembly (21) comprises connecting shafts (211) symmetrically clamped on the support base (1), a connecting rotary disc (212) fixed on the outer end of one of the connecting shafts (211), and a limiting tube (214) fixed on the connecting rotary disc (212); a fixing screw rod (213) is further arranged in the limiting tube (214) and simultaneously arranged in the support base (1).

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