Rodent experimental animal fixing device for laboratory research

Abstract

The utility model discloses a rodent experimental animal fixing device for laboratory research, which comprises a case, a fixing rod is fixedly connected with an inner cavity of the case, and a supporting rod is movably connected with the surface of the fixing rod. Through the cooperation of the case, the fixing rod, the supporting rod, the clamping ring, the first spring, the rotating shaft, the cam, the driving block, the second spring, the baffle, the driving rod and the head limiting block, the rotating shaft is rotated through the cam, the cam drives the supporting rod to rotate with the fixing rod as the circle center through the driving block, and the clamping ring is opened; a head limiting block is stretched upwards through a handle, a laboratory mouse is placed between two clamping rings, the handle is loosened, the head limiting block moves downwards through the action of a second spring on a baffle, the head of the laboratory mouse is fixed, then a rotating shaft is rotated, the clamping rings are reset through the action of a first spring on a supporting rod, operation is easy, and the fixing effect is good.

Description

Technical Field

[0001] This utility model relates to the field of laboratory equipment technology, specifically a restraint device for rodent experimental animals used in laboratory research. Background Technology

[0002] Rodents are currently the preferred medium for medical research in most medical laboratories both domestically and internationally. However, there are several advantages to their use. First, when handling and securing laboratory animals, researchers are prone to bites and injuries, even fatal infections, due to initial lack of skill or animal irritation. Second, while wearing bite-resistant gloves ensures safety, it also reduces hand dexterity. Third, when administering routine anesthesia to animals in anesthesia tanks, controlling the dosage and duration of anesthetic drugs is difficult, and handling animals can be time-consuming. Furthermore, if the time spent on the operating table after anesthesia is slightly prolonged, the animal is highly likely to awaken, resulting in bites to researchers or the need for re-anesthesia. Fourth, there are no dedicated operating tables for rodent surgeries; instead, self-made wooden boards are often used for securing the animals, making sterilization and aseptic surgical procedures difficult. Utility Model Content

[0003] The purpose of this invention is to provide a fixation device for rodent experimental animals used in laboratory research, which has the advantage of high practicality and solves the problem of low practicality of existing devices.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a fixation device for rodent experimental animals used in laboratory research, comprising a housing, a fixing rod fixedly connected to the inner cavity of the housing, a support rod movably connected to the surface of the fixing rod, a clamping ring fixedly connected to the top of the support rod, a first spring fixedly connected to one side of the support rod, a rotating shaft movably connected to the inner wall of the housing via a bearing seat, a cam fixedly connected to the surface of the rotating shaft, a driving block provided in the inner cavity of the housing, a second spring fixedly connected to the inner cavity of the housing, a baffle fixedly connected to the other end of the second spring, a driving rod fixedly connected to the other end of the baffle, and a head limiting block fixedly connected to the other end of the driving rod.

[0005] Preferably, the other end of the first spring is fixedly connected to the inner cavity of the chassis, and the first spring is inclined at a certain angle to the horizontal plane.

[0006] Preferably, the cross-sectional shape of the drive block is I-shaped, and the number of drive blocks is two.

[0007] Preferably, the other end of the rotating shaft passes through the chassis and extends to the outside of the chassis, and a drive wheel is fixedly connected to one end of the rotating shaft.

[0008] Preferably, a handle is fixedly connected to the top of the head limiting block, and an arc-shaped groove is provided at the bottom of the head limiting block.

[0009] Preferably, the number of clamping rings is two, and the clamping rings are made of transparent polyethylene.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This utility model utilizes the cooperation of a housing, a fixed rod, a support rod, a clamping ring, a first spring, a rotating shaft, a cam, a drive block, a second spring, a baffle, and a head limiting block. Rotating the rotating shaft causes the cam to rotate, which in turn drives the support rod to rotate around the fixed rod via the drive block, opening the clamping ring. Pulling the handle upwards to extend the head limiting block allows the experimental mouse to be placed between the two clamping rings. Releasing the handle causes the head limiting block to move downwards via the action of the second spring on the baffle, securing the mouse's head. Rotating the rotating shaft then causes the clamping ring to reset via the action of the first spring on the support rod. The operation is simple and provides good fixation.

[0012] 2. This utility model features a drive wheel for easy rotation of the shaft, an arc groove for better fixation of the mouse's head, and a clamping ring made of transparent polyethylene for easy observation of the mouse by researchers. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a perspective view of the cam structure of this utility model;

[0015] Figure 3 This is a cross-sectional view of the right side of the chassis structure of this utility model.

[0016] In the diagram: 1. Chassis; 2. Fixing rod; 3. Support rod; 4. Clamping ring; 5. First spring; 6. Rotating shaft; 7. Cam; 8. Drive block; 9. Second spring; 10. Baffle; 11. Drive rod; 12. Head limit block; 13. Drive wheel; 14. Handle; 15. Arc groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1:

[0019] Please see Figures 1-3 To facilitate operation, this embodiment provides the following technical solution, specifically: It includes a chassis 1, with a fixed rod 2 fixedly connected to the inner cavity of the chassis 1. A support rod 3 is movably connected to the surface of the fixed rod 2. A clamping ring 4 is fixedly connected to the top of the support rod 3. A first spring 5 is fixedly connected to one side of the support rod 3. A rotating shaft 6 is movably connected to the inner wall of the chassis 1 via a bearing seat. A cam 7 is fixedly connected to the surface of the rotating shaft 6. A drive block 8 is provided in the inner cavity of the chassis 1. A second spring 9 is fixedly connected to the inner cavity of the chassis 1. A baffle 10 is fixedly connected to the other end of the second spring 9. A drive block 8 is fixedly connected to the other end of the baffle 10. The moving rod 11 has a head limiting block 12 fixedly connected to the other end. The rotating shaft 6 rotates through the cam 7, and the cam 7 drives the support rod 3 to rotate around the fixed rod 2 through the driving block 8, so that the clamping ring 4 opens. The head limiting block 12 is pulled upward by the handle 14, and the experimental mouse is placed between the two clamping rings 4. The handle 14 is released, and the head limiting block 12 moves downward by the action of the second spring 9 on the baffle 10, fixing the head of the experimental mouse. Then the rotating shaft 6 is rotated, and the clamping ring 4 is reset by the action of the first spring 5 on the support rod 3. The operation is simple and the fixation effect is good.

[0020] Example 2:

[0021] Please see Figures 1-3 To achieve high practicality, this embodiment provides the following technical solution, specifically: the other end of the first spring 5 is fixedly connected to the inner cavity of the chassis 1, the first spring 5 is inclined at a certain angle to the horizontal plane, the cross-sectional shape of the drive block 8 is I-shaped, and there are two drive blocks 8, the other end of the rotating shaft 6 passes through the chassis 1 and extends to the outside of the chassis 1, one end of the rotating shaft 6 is fixedly connected to the drive wheel 13, the top of the head limiting block 12 is fixedly connected to the handle 14, the bottom of the head limiting block 12 is provided with an arc groove 15, there are two clamping rings 4, and the material of the clamping rings 4 is transparent polyethylene. By designing the drive wheel 13, it is easy to drive the rotating shaft 6 to rotate. By designing the arc groove 15, it is easier to fix the head of the experimental mouse. By designing the material of the clamping rings 4 to be transparent polyethylene, it is convenient for the experimental personnel to observe the experimental mouse.

[0022] In use, rotate the shaft 6. The shaft 6 rotates via the cam 7. The cam 7 drives the support rod 3 to rotate around the fixed rod 2 via the drive block 8, opening the clamping ring 4. Pull the head limiting block 12 upward by the handle 14 and place the experimental mouse between the two clamping rings 4. Release the handle 14. The second spring 9 acts on the baffle 10, causing the head limiting block 12 to move downward and fix the head of the experimental mouse. Then rotate the shaft 6. The first spring 5 acts on the support rod 3, and the clamping ring 4 returns to its original position. The operation is simple and the fixation effect is good.

[0023] In the description of this patent, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent. In the description of this patent, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A restraint device for laboratory rodent experimental animals, comprising a housing (1), characterized in that: A fixing rod (2) is fixedly connected to the inner cavity of the chassis (1). A support rod (3) is movably connected to the surface of the fixing rod (2). A clamping ring (4) is fixedly connected to the top of the support rod (3). A first spring (5) is fixedly connected to one side of the support rod (3). A rotating shaft (6) is movably connected to the inner wall of the chassis (1) through a bearing seat. A cam (7) is fixedly connected to the surface of the rotating shaft (6). A drive block (8) is provided in the inner cavity of the chassis (1). A second spring (9) is fixedly connected to the inner cavity of the chassis (1). A baffle (10) is fixedly connected to the other end of the second spring (9). A drive rod (11) is fixedly connected to the other end of the baffle (10). A head limiting block (12) is fixedly connected to the other end of the drive rod (11).

2. The restraint device for laboratory rodent experimental animals according to claim 1, characterized in that: The other end of the first spring (5) is fixedly connected to the inner cavity of the chassis (1), and the first spring (5) is inclined at a certain angle to the horizontal plane.

3. The restraint device for laboratory rodent experimental animals according to claim 1, characterized in that: The cross-section of the drive block (8) is I-shaped, and there are two drive blocks (8).

4. The restraint device for laboratory rodent experimental animals according to claim 1, characterized in that: The other end of the shaft (6) passes through the chassis (1) and extends to the outside of the chassis (1). One end of the shaft (6) is fixedly connected to a drive wheel (13).

5. The restraint device for laboratory rodent experimental animals according to claim 1, characterized in that: The top of the head limiting block (12) is fixedly connected to a handle (14), and the bottom of the head limiting block (12) is provided with an arc-shaped groove (15).

6. The restraint device for laboratory rodent experimental animals according to claim 1, characterized in that: The number of clamping rings (4) is two, and the material of the clamping rings (4) is transparent polyethylene.

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