Experimental animal activity limiting device

Abstract

The utility model discloses an activity limiting device for an experimental animal, relates to the technical field of experimental equipment, and aims to solve the technical problem that the existing activity limiting device for the experimental animal is poor in applicability. The two ends of the supporting frame are each provided with a sawtooth strip adjusting assembly, a restraining sleeve is restrained through the sawtooth strip adjusting assemblies, the restraining sleeve is of a two-section type, and the front section of the restraining sleeve is slidably connected into the supporting frame. The two-end type restraining sleeve is arranged, so that the front section of the restraining sleeve is connected into the supporting frame in a sliding mode, the front section of the restraining sleeve is restrained through the sawtooth strip adjusting assemblies on the two sides of the restraining sleeve, and therefore the front section of the restraining sleeve is connected into the supporting frame in a sliding mode. The position of the front section of the restraining sleeve can be rapidly adjusted, rapid locking can be achieved after adjustment, the applicability is high, and laboratory mice with different body lengths can be rapidly restrained.

Description

Technical Field

[0001] This utility model relates to the field of experimental equipment technology, and more specifically, to a device for restricting the movement of laboratory animals. Background Technology

[0002] Animal restraint devices are mainly used to control the range of movement of laboratory animals in order to facilitate the observation of their behavior, conduct experiments, or prevent injury. For experiments that require physiological measurements or sampling, such as electrophysiological recording, the restraint device can help keep the animal in a certain position without affecting the experiment. Laboratory mice are often used in experiments. Existing laboratory mouse restraint devices generally include a support frame and a restraint tube. When in use, the laboratory mouse is placed in the restraint tube and restrained, with its head entering the funnel-shaped tube at the head of the restraint tube. If necessary, the laboratory mouse's limbs can be pulled out from the corresponding slots, which can quickly restrain the laboratory mouse.

[0003] While existing animal restraint devices can restrain the head and limbs of mice for experiments, they have the following drawbacks: a suitable support needs to be selected in advance based on the size of the mouse, and the length of the restraint tube cannot be quickly adjusted according to the length of the mouse. Therefore, we propose an animal restraint device. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide a device for restricting the activity of laboratory animals, so as to solve the technical problem of poor applicability of existing devices for restricting the activity of laboratory animals.

[0005] To solve the above technical problems, the present invention provides the following technical solution: an activity restriction device for experimental animals, including a support frame, a constraint sleeve installed in the support frame, a serrated adjustment assembly installed at both ends of the support frame and constraining the constraint sleeve through the serrated adjustment assembly, the constraint sleeve being two-sectioned with the front section slidably connected in the support frame;

[0006] The sawtooth adjustment assembly includes a first sawtooth, which has two teeth and is fixedly installed on both sides of the front section of the constraint sleeve. A second sawtooth is connected to each of the first sawtooths. One end of each second sawtooth is fixedly installed on the support frame. The teeth of the first sawtooth are in the shape of a right triangle with the hypotenuse facing the rear section of the constraint sleeve. The teeth of the second sawtooth can cooperate with the teeth of the first sawtooth.

[0007] Preferably, the support frame includes a rear frame piece, one side of which is equipped with a top arc strip and a bottom arc strip, both sides of which are fixedly connected with bottom edge strips, and the other end of which is fixedly connected to a front frame piece;

[0008] The rear frame piece has a first groove, and there are two top arc strips that are symmetrically installed on one side of the rear frame piece.

[0009] Preferably, the constraint sleeve includes a rear cylinder and a front cylinder, the rear cylinder is fixedly mounted on the rear frame plate, and the front cylinder is slidably connected to the bottom arc strip;

[0010] The front cylinder has an internal thread at one end and is connected to a threaded neck through the internal thread. The end of the threaded neck is fixedly connected to a head cylinder, which is funnel-shaped.

[0011] Preferably, a second groove is provided on the upper part of both the rear cylinder and the front cylinder, the second groove corresponding to the first groove, a third groove is provided on both sides of the lower part of both the rear cylinder and the front cylinder, and a plurality of ventilation holes are provided at intervals on the rear cylinder, the front cylinder and the head cylinder.

[0012] Preferably, each of the open ends of the second serrated strip is fixedly connected to an extension bar, and a spring is fixedly installed on the side of the second serrated strip opposite to its serrations. The other end of the spring is fixedly connected to a fixing bar, and one end of the fixing bar is fixedly installed on the support frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model uses a two-end constraint sleeve, with the front end of the constraint sleeve slidingly connected to the support frame and constrained by the serrated adjustment components on both sides. The position of the front end of the constraint sleeve can be quickly adjusted and locked after adjustment. It has strong applicability and can quickly restrain laboratory mice of different body lengths, solving the problem of poor applicability of existing experimental animal activity restriction devices.

[0015] 2. The first serrated bar of this utility model has serrations in the shape of a right-angled triangle with the hypotenuse facing the rear section of the constraint sleeve. The serrations of the second serrated bar can cooperate with the serrations of the first serrated bar, which can quickly adjust the position of the front section of the constraint sleeve and lock it quickly after adjustment, thus solving the problem of poor applicability of the existing experimental animal activity restriction devices. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present utility model;

[0017] Figure 2 This is a top view of the structure of this utility model;

[0018] Figure 3 for Figure 2 Schematic diagram of the structure at point A;

[0019] Figure 4 This is a side view of the structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the back structure of this utility model.

[0021] The labels in the diagram are as follows: 1. Support frame; 2. Constraint sleeve; 3. Sawtooth adjustment assembly;

[0022] 101. Rear frame piece; 102. Top arc strip; 103. Bottom edge strip; 104. Bottom arc strip; 105. Front frame piece; 106. First groove;

[0023] 201. Rear cylinder; 202. Front cylinder; 203. Second groove; 204. Internal thread; 205. Thread neck; 206. Head cylinder; 207. Vent hole; 208. Third groove;

[0024] 301. First serrated bar; 302. Second serrated bar; 303. Extending bar; 304. Spring; 305. Fixing bar. Detailed Implementation

[0025] like Figures 1 to 5 As shown, the present invention relates to an activity restriction device for experimental animals, including a support frame 1, a constraint sleeve 2 installed inside the support frame 1, and serrated adjustment components 3 installed at both ends of the support frame 1, and the constraint sleeve 2 is constrained by the serrated adjustment components 3. The constraint sleeve 2 is two-sectioned and the front section is slidably connected inside the support frame 1.

[0026] The serrated adjustment assembly 3 includes two first serrated bars 301, which are respectively fixedly installed on both sides of the front section of the constraint sleeve 2. Each first serrated bar 301 is externally connected to a second serrated bar 302. One end of each second serrated bar 302 is fixedly installed on the support frame 1. The serrations of the first serrated bar 301 are in the shape of a right-angled triangle with the hypotenuse facing the rear section of the constraint sleeve 2. The serrations of the second serrated bars 302 can engage with the serrations of the first serrated bar 301. This utility model, by setting a two-end constraint sleeve... The sleeve 2 allows the front section of the constraint sleeve 2 to slide within the support frame 1 and be constrained by the serrated adjustment components 3 on both sides. This allows for quick adjustment of the position of the front section of the constraint sleeve 2 and quick locking after adjustment, making it highly versatile and capable of quickly constraining experimental mice of different lengths. The first serrated strip 301 has right-angled triangular teeth with its hypotenuse facing the rear section of the constraint sleeve 2. The serrations of the second serrated strip 302 can engage with the serrations of the first serrated strip 301, allowing for quick adjustment of the position of the front section of the constraint sleeve 2 and quick locking after adjustment.

[0027] Furthermore, the support frame 1 includes a rear frame piece 101, on one side of which a top arc strip 102 and a bottom arc strip 104 are installed. Bottom edge strips 103 are fixedly connected to both sides of the bottom arc strip 104, and a front frame piece 105 is fixedly connected to the other end of the bottom arc strip 104.

[0028] The rear frame piece 101 has a first groove 106. There are two top arc strips 102, which are symmetrically installed on one side of the rear frame piece 101. The inner arcs of the top arc strip 102 and the bottom arc strip 104 are opposite each other and their inner arc surfaces are adapted to the constraint sleeve 2.

[0029] Furthermore, the constraint sleeve 2 includes a rear sleeve 201 and a front sleeve 202. The rear sleeve 201 is fixedly installed on the rear frame piece 101, and the front sleeve 202 is slidably connected to the bottom arc strip 104.

[0030] The front cylinder 202 has an internal thread 204 at one end and a threaded neck 205 is threadedly connected through the internal thread 204. The head tube 206 is fixedly connected to the end of the threaded neck 205. The head tube 206 is funnel-shaped, which makes it easy to adjust the position of the front cylinder 202 according to the body length of different mice. After adjustment, the heads of experimental mice of different body lengths are all located in the funnel-shaped head tube 206, which facilitates experimental operations such as injection into the head of the experimental mice.

[0031] Furthermore, a second groove 203 is provided on the upper part of both the rear cylinder 201 and the front cylinder 202, which corresponds to the first groove 106. A third groove 208 is provided on both sides of the lower part of both the rear cylinder 201 and the front cylinder 202. Several ventilation holes 207 are provided at intervals on the rear cylinder 201, the front cylinder 202 and the head cylinder 206. The third groove 208 facilitates the experimental mouse to extend its limbs for experiments.

[0032] Furthermore, each open end of the second serrated bar 302 is fixedly connected to an extension bar 303. A spring 304 is fixedly installed on the side of the second serrated bar 302 opposite to its serrations. A fixing bar 305 is fixedly connected to the other end of the spring 304. One end of the fixing bar 305 is fixedly installed on the support frame 1. The fixing bar 305, in conjunction with the spring 304, can provide support force to the open end of the second serrated bar 302.

[0033] Working principle: This embodiment provides a device for restricting the movement of laboratory animals. When using a short-bodied laboratory mouse, first unscrew the head sleeve 206, hold the mouse and place it into the restraint sleeve 2. The first groove 106 and the second groove 203 facilitate the placement of the mouse's long tail during restraint. After placement, allow the mouse's tail to protrude through the first groove 106. Screw the head sleeve 206 into the front end of the front sleeve 202, allowing the mouse's head to enter the head sleeve 206. Since first serrated strips 301 are fixedly installed on both sides of the front sleeve 202, the serrations of the first serrated strips 301 are right-angled triangular in shape with the hypotenuse facing the restraint. In the rear section of sleeve 2, the serrations of the second serrated bar 302 can engage with the serrations of the first serrated bar 301. One end of the second serrated bar 302 is fixedly mounted on the support frame 1. When the front cylinder 202 and the head cylinder 206 are pushed backward as a whole, the inclined side of the first serrated bar 301 outside the front cylinder 202 and the head cylinder 206 faces the rear cylinder 201, and can slide backward along the inclined side of the second serrated bar 302, causing the second serrated bar 302 to produce a small elastic deformation. After sliding to the target, the right-angled side of the second serrated bar 302 abuts against the right-angled side of the first serrated bar 301, locking the front cylinder 202 and the head cylinder 206 together to prevent them from moving outward. The sleeve can slide out, allowing for quick adjustment of the position of the front section of the constraint sleeve 2, and can be quickly locked after adjustment. When constraining a long-bodied experimental mouse, hold the two protruding strips 303 at both ends and pull them towards each other. The second serrated strip 302 and the protruding strips 303 are both elastically deformable metal strips (metal generally has a high elastic modulus and can maintain elastic deformation under a large load). A spring 304 is fixedly installed on the side of the second serrated strip 302 opposite to its serrations. The other end of the spring 304 is fixedly connected to a fixing strip 305. One end of the fixing strip 305 is fixedly installed on the support frame 1. The fixing strip 305 cooperates with... Spring 304 supports the open ends of the second serrated bar 302 and the extension bar 303 to prevent plastic deformation or breakage after the second serrated bar 302 and the extension bar 303 exceed their elastic limits. The open ends of the second serrated bar 302 and the extension bar 303 are pulled away from the first serrated bar 301. The second serrated bar 302 separates from the first serrated bar 301 and is unlocked. The front cylinder 202 and the head cylinder 206 are pulled outward. The front cylinder 202 and the head cylinder 206 slide forward along the top arc bar 102 and the bottom arc bar 104 until they correspond to the longer body length of the mouse. The experimental mouse is then placed in the constraint sleeve 2, and the principle is the same as above.

[0034] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A device for restricting the movement of laboratory animals, characterized in that, Including support frame (1), the support frame (1) is installed with constraint sleeve (2) inside, both ends of the support frame (1) are installed with rack adjusting assembly (3) and are constrained with constraint sleeve (2) through rack adjusting assembly (3), the constraint sleeve (2) is two-stage and the front section is slidingly connected in the support frame (1); The rack adjusting assembly (3) includes first rack (301), the first rack (301) has two and is fixedly installed on both sides of the front section of constraint sleeve (2), the second rack (302) is connected with the first rack (301) in the form of cooperation, one end of the second rack (302) is fixedly installed on the support frame (1), the teeth of the first rack (301) are in the shape of right triangle and the hypotenuse is towards the rear section of the constraint sleeve (2), the teeth of the second rack (302) can be matched with the teeth of the first rack (301).

2. The activity restriction device for experimental animals according to claim 1, wherein The support frame (1) includes rear frame sheet (101), one side of the rear frame sheet (101) is installed with top arc strip (102) and bottom arc strip (104), both sides of the bottom arc strip (104) are fixedly connected with bottom edge strip (103), the other end of the bottom arc strip (104) is fixedly connected with front frame sheet (105); A first slot (106) is formed in the rear frame sheet (101), the top arc strip (102) has two and is symmetrically installed on one side of the rear frame sheet (101).

3. The activity restriction device for experimental animals according to claim 2, wherein The constraint sleeve (2) includes rear cylinder body (201) and front cylinder body (202), the rear cylinder body (201) is fixedly installed on the rear frame sheet (101), the front cylinder body (202) is slidingly connected on the bottom arc strip (104); An internal thread (204) is formed in one end of the front cylinder body (202) and a threaded neck (205) is threadedly connected with the internal thread (204), the threaded neck (205) is fixedly connected with head cylinder (206) at the end, and the head cylinder (206) is in the shape of a funnel.

4. The activity restriction device for experimental animals according to claim 3, wherein Second slots (203) are formed in the upper parts of the rear cylinder body (201) and the front cylinder body (202), the second slots (203) correspond to the first slot (106), third slots (208) are formed in the lower parts of both sides of the rear cylinder body (201) and the front cylinder body (202), and a plurality of air holes (207) are formed at intervals on the rear cylinder body (201), the front cylinder body (202) and the head cylinder (206).

5. The activity restriction device for experimental animals according to claim 1, wherein The second rack (302) is fixedly connected with an extension strip (303) at the open end, a spring (304) is fixedly installed on the side of the second rack (302) opposite to the teeth, the other end of the spring (304) is fixedly connected with a fixed strip (305), and one end of the fixed strip (305) is fixedly installed on the support frame (1).

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