Adjustable rat neck-bending fixing device

Abstract

The utility model relates to the technical field of fixing clamps, in particular to an adjustable rat neck bending fixing device. The adjustable rat neck bending fixing device comprises a frame assembly, a body fixing assembly and a rat head restraining assembly, the body fixing assembly and the rat head restraining assembly are both arranged on the frame assembly, a containing cavity used for containing a rat is formed in the body fixing assembly, the inner diameter of the containing cavity can be adjusted, and the rat head restraining assembly is arranged in the containing cavity. The mouse head restraining assembly comprises a first baffle used for restraining the angle of the mouse head, and the inclination angle of the first baffle can be adjusted. According to the technical scheme, rats with different body sizes can be stably fixed, the neck bending angle is adjusted according to experimental requirements, and different neck postures are simulated for experimental research.

Description

Technical Field

[0001] This utility model relates to the field of fixing clamp technology, and in particular to an adjustable rat neck fixing and flexion device. Background Technology

[0002] With the development of the information age, the habits of Chinese people in all aspects of learning, life, and work have changed. The high-frequency use of electronic devices such as smartphones has directly led to people of all ages maintaining a head-down posture for extended periods every day, especially among young people. This prolonged head-down posture greatly increases the load on the neck, and the continuous abnormal stress exacerbates neck muscle strain, induces cervical degeneration, and eventually leads to decreased cervical spine stability and function, ultimately resulting in cervical spondylosis. Studies have shown that the incidence of cervical degeneration and cervical spondylosis in today's young people is largely related to their prolonged head-down posture.

[0003] To investigate the pathological mechanism of cervical degeneration caused by prolonged head-down posture, it is necessary to construct an animal model simulating prolonged head-down posture. However, existing rat immobilization devices cannot maintain the rats in a flexed neck position, the flexion angle is not adjustable, and due to the differences in rat size, they cannot be stably immobilized and maintain the same position for a long period of time, which cannot meet the experimental requirements.

[0004] Therefore, there is an urgent need to provide an adjustable rat neck flexion fixation device to solve the above-mentioned technical problems. Utility Model Content

[0005] This invention provides an adjustable rat fixation and neck flexion device, which can ensure stable fixation of rats of different sizes and adjust the neck flexion angle according to experimental requirements to simulate different neck postures for experimental research.

[0006] This invention provides an adjustable rat neck-fixing device, comprising a frame assembly, a body fixation assembly, and a rat head restraint assembly. The body fixation assembly and the rat head restraint assembly are both disposed on the frame assembly. The body fixation assembly has an internal cavity for accommodating the rat, the inner diameter of which is adjustable. The rat head restraint assembly includes a first baffle for restraining the rat head angle, the tilt angle of which is adjustable.

[0007] Beneficial effects:

[0008] The adjustable rat neck flexion device provided by this invention, by setting up a body fixation component and a head restraint component, allows for the fixation of the rat's body using the body fixation component, and the inner diameter of the accommodating cavity can be adjusted according to the size of the rat's body. The head restraint component can also restrain the rat's head, and the tilt angle of the first baffle can be adjusted as needed. Therefore, the above technical solution can ensure the stable fixation of rats of different sizes, and adjust the neck flexion angle according to experimental requirements to simulate different neck postures for experimental research. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 A schematic diagram of an adjustable rat neck-fixing and flexion device according to one embodiment is shown.

[0011] Figure 2 for Figure 1 The diagram shows the structure of the rat neck fixation and flexion device after the hidden frame components are shown.

[0012] Figure 3 for Figure 1 The diagram shows an exploded view of part of the rat's neck flexion fixation device.

[0013] Figure 4 for Figure 1 A schematic diagram of the rotating gears and part of the body fixation components in the rat neck fixation and flexion device shown.

[0014] Figure 5 for Figure 1 An exploded schematic diagram of part of the body fixation components in the rat neck fixation and flexion device shown.

[0015] Figure label:

[0016] 1-Framework components;

[0017] 11-Side panel;

[0018] 12-Guide groove;

[0019] 13-Rotating gear;

[0020] 14-First arc-shaped groove;

[0021] 15 - Second baffle;

[0022] 16-Push rod;

[0023] 17-Fixing plate;

[0024] 2-Body fixation components;

[0025] 21-Receiving cavity;

[0026] 22-Connecting rod;

[0027] 23- Hinged panel;

[0028] 24-Guide rail plate;

[0029] 3-Rat head constraint component;

[0030] 31-First baffle;

[0031] 32-Fixed base;

[0032] 33-Horizontal groove;

[0033] 34 - Second arc-shaped groove;

[0034] 35 - Ruler. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," "outer," or "middle" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] like Figures 1 to 5 As shown, this utility model embodiment provides an adjustable rat neck fixation and flexion device, including a frame assembly 1, a body fixation assembly 2, and a rat head restraint assembly 3. The body fixation assembly 2 and the rat head restraint assembly 3 are both disposed on the frame assembly 1. The body fixation assembly 2 has a receiving cavity 21 for accommodating the rat. The inner diameter of the receiving cavity 21 is adjustable. The rat head restraint assembly 3 includes a first baffle 31 for restraining the angle of the rat head. The tilt angle of the first baffle 31 is adjustable.

[0040] In this embodiment, by setting up a body fixation component 2 and a rat head restraint component 3, the rat's body can be fixed using the body fixation component 2, and the inner diameter of the receiving cavity 21 can be adjusted according to the size of the rat's body. The rat head restraint component 3 can also restrain the rat's head, and the tilt angle of the first baffle 31 can be adjusted as needed. Therefore, the above technical solution can ensure the stable fixation of rats of different sizes, and adjust the neck flexion angle according to experimental requirements to simulate different neck postures for experimental research.

[0041] Understandably, the adjustable neck flexion device is a research instrument primarily used to immobilize rats and adjust their neck flexion angle to simulate a head-down posture for related studies. This device is a cylindrical structure designed to house the rat's body; its diameter and length are adjustable to accommodate rats of different sizes, ensuring stable immobilization. Furthermore, by adjusting the device, the flexion angle of the rat's head can be controlled, simulating different neck postures, making it suitable for studying the effects of neck flexion on physiological or pathological conditions.

[0042] In one embodiment of the present invention, the body fixing component 2 includes a connecting rod 22 and an opening and closing plate 23. The connecting rod 22 is fixed on the frame component 1, and the opening and closing plate 23 is sleeved on the connecting rod 22. The opening and closing plate 23 forms a receiving cavity 21 and can rotate relative to the connecting rod 22.

[0043] In one embodiment of this utility model, the body fixing assembly 2 further includes two guide rail plates 24, two connecting rods 22, and four opening and closing plates 23. Each pair of opening and closing plates 23 is sleeved on a connecting rod 22. Each pair of adjacent opening and closing plates 23 sleeved on different connecting rods 22 passes through the interior of the guide rail plate 24. The connecting rods 22 and the guide rail plates 24 can slide relative to the frame assembly 1. When the connecting rods 22 and the guide rail plates 24 slide, the connecting rods 22 and the guide rail plates 24 can drive the four opening and closing plates 23 to move, so as to adjust the inner diameter of the receiving cavity 21.

[0044] In one embodiment of the present invention, both side plates 11 of the frame assembly 1 are provided with guide grooves 12, and the connecting rod 22 and the opening and closing plate 23 can slide along the guide grooves 12.

[0045] In one embodiment of this utility model, the cross-sections of the main body of the opening and closing plate 23 and the guide rail plate 24 are both arc-shaped structures to form an adjustable inner diameter receiving cavity 21.

[0046] In one embodiment of this utility model, rotating gears 13 are provided on the exterior of both side plates 11 of the frame assembly 1. The rotating gears 13 are provided with four first arc-shaped grooves 14. The ends of the connecting rod 22 and the guide plate 24 are inserted into the first arc-shaped grooves 14. When the rotating gears 13 on both sides rotate in opposite directions, the connecting rod 22 and the guide plate 24 can slide along the first arc-shaped grooves 14, so that the connecting rod 22 slides up and down along the guide groove 12 and the opening and closing plate 23 slides left and right along the guide groove 12.

[0047] In this embodiment, the rotating gear rotates synchronously in opposite directions, driving the connecting rod 22 to slide up and down along the guide groove 12 and the opening and closing plate 23 to slide left and right along the guide groove 12, so that the diameter of the receiving cavity 21 can be flexibly adjusted to adapt to the changes in trunk diameter of rats of different body sizes.

[0048] In one embodiment of the present invention, a second baffle 15 for blocking the rat's tail and a push rod 16 for restricting the movement of the rat's tail are provided on one side of the frame assembly 1. The push rod 16 can move back and forth relative to the receiving cavity 21, and the second baffle 15 can move up and down relative to the frame assembly 1.

[0049] On the other side of the frame assembly 1, there is a fixation plate 17 for fixing the rat's neck. The fixation plate 17 is located on the same side as the rat head restraint assembly 3. The fixation plate 17 is made of rubber to prevent injury to the rat's neck organs.

[0050] In this embodiment, the fixing plate 17 is designed to be adjustable to accommodate changes in the diameter and height of the rat's neck.

[0051] In some embodiments, the second baffle 15 and the frame assembly 1 may employ a mortise and tenon joint guide design to facilitate disassembly and allow rats to enter and exit easily.

[0052] In some embodiments, the push rod 16 may employ a groove design to facilitate piston-like movement. By adjusting the extension distance of the push rod 16, it can adapt to the differences in rat body length, ensuring that the tail extends naturally and is fixed securely.

[0053] In one embodiment of the present invention, the mouse head restraint assembly 3 further includes two parallel fixed seats 32, and a first baffle 31 is disposed between the two fixed seats 32 and can rotate relative to the fixed seats 32 to adjust the tilt angle of the first baffle 31.

[0054] Each fixed seat 32 is provided with a horizontal groove 33 and a second arc-shaped groove 34. One end of the first baffle 31 can slide along the horizontal groove 33, and the other end can slide along the second arc-shaped groove 34. This allows the first baffle 31 to move back and forth and change its angle, thereby meeting the needs of the rat's neck length and head angle.

[0055] In some embodiments, the bolts and nuts connecting the first baffle 31 and the fixing seat 32 may be made of nylon material to facilitate X-ray imaging.

[0056] In one embodiment of this utility model, the rat head restraint assembly 3 further includes a scale 35 that fits against one of the fixed seats 32. The scale 35 is used to measure the tilt angle of the first baffle 31 and can conveniently and standardizedly adjust the rat head angle to achieve precise adjustment of the rat head flexion angle (0 to 90° adjustable) and meet the standardized requirements of different experiments for the neck flexion angle.

[0057] In summary, this invention provides a simple and safe adjustable rat neck-flexion fixation device for animal experiments. During operation, the rear fixing frame is first opened, allowing the rat to crawl into the fixing cylinder from the rear. Once the rat's head emerges from the front of the cylinder, the neck fixing plate can be adjusted to flexibly fix the rat's neck, preventing head retraction. Next, the tail baffle and push rod are fixed, allowing the rat's tail to extend naturally. The extension distance of the push rod is adjusted according to the rat's body length, and the sliding groove of the fixing cylinder is adjusted according to the rat's body diameter to ensure the rat's torso is free from displacement constraints within the fixing cylinder. Finally, the head baffle is adjusted according to the experimental objective to determine the head-down angle. This device significantly improves fixation efficiency and experimental repeatability, solving the problems of poor adaptability, cumbersome operation, and insufficient animal safety associated with traditional devices, providing a standardized experimental tool for long-term research on the pathological mechanisms of neck flexion.

[0058] Furthermore, this utility model embodiment also provides a method for using an adjustable rat neck-fixing and flexing device. Based on any of the above-mentioned adjustable rat neck-fixing and flexing device, the method includes:

[0059] The rat's body is fixed using the body fixation component 2, and the inner diameter of the receiving cavity 21 is adjusted according to the size of the rat's body.

[0060] The rat's head is restrained using the rat head restraint component 3, and the tilt angle of the first baffle 31 is adjusted as needed to control the rat's head.

[0061] It is understood that the method of using the adjustable rat neck fixation and flexion device provided in this embodiment is based on the same utility model concept as the adjustable rat neck fixation and flexion device provided in the above embodiment, and therefore the two have the same beneficial effects, which will not be elaborated here.

[0062] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An adjustable rat neck-fixing and flexion device, characterized in that, The device includes a frame assembly, a body fixation assembly, and a rat head restraint assembly. The body fixation assembly and the rat head restraint assembly are both disposed on the frame assembly. The body fixation assembly has an internal cavity for accommodating a rat, and the inner diameter of the cavity is adjustable. The rat head restraint assembly includes a first baffle for restraining the angle of the rat's head, and the tilt angle of the first baffle is adjustable.

2. The adjustable rat neck-fixing and flexion device according to claim 1, characterized in that, The body fixing assembly includes a connecting rod and a hinged plate. The connecting rod is fixed to the frame assembly, and the hinged plate is sleeved on the connecting rod, forming the receiving cavity. The hinged plate can rotate relative to the connecting rod.

3. The adjustable rat neck-fixing and flexion device according to claim 2, characterized in that, The body fixing assembly also includes two guide rail plates, two connecting rods, and four opening and closing plates. Each pair of opening and closing plates is fitted onto one of the connecting rods. Each pair of adjacent opening and closing plates fitted onto different connecting rods passes through the interior of the guide rail plate. The connecting rods and the guide rail plates can slide relative to the frame assembly. When the connecting rods and the guide rail plates slide, they can drive the four opening and closing plates to move, thereby adjusting the inner diameter of the receiving cavity.

4. The adjustable rat neck-fixing and flexion device according to claim 3, characterized in that, The frame assembly has guide grooves on both side plates, and the connecting rod and the opening / closing plate can slide along the guide grooves.

5. The adjustable rat neck-fixing and flexion device according to claim 3, characterized in that, Both the opening and closing plate and the main body of the guide rail plate have arc-shaped cross-sections to form the receiving cavity with an adjustable inner diameter.

6. The adjustable rat neck-fixing and flexion device according to claim 4, characterized in that, Rotating gears are provided on the exterior of both side plates of the frame assembly. Each rotating gear has four first arc-shaped grooves. The ends of the connecting rod and the guide plate are inserted into the first arc-shaped grooves. When the rotating gears on both sides rotate in opposite directions, the connecting rod and the guide plate can slide along the first arc-shaped grooves, so that the connecting rod slides up and down along the guide groove and the opening and closing plate slides left and right along the guide groove.

7. The adjustable rat neck-fixing and flexion device according to any one of claims 1-6, characterized in that, One side of the frame assembly is provided with a second baffle for blocking the rat's tail and a push rod for restricting the movement of the rat's tail. The push rod can move back and forth relative to the receiving cavity, and the second baffle can move up and down relative to the frame assembly. On the other side of the frame assembly is a fixation plate for fixing the rat's neck. The fixation plate is located on the same side as the rat head restraint assembly and is made of rubber.

8. The adjustable rat neck-fixing and flexion device according to any one of claims 1-6, characterized in that, The rat head restraint assembly also includes two parallel fixed seats, and the first baffle is disposed between the two fixed seats and can rotate relative to the fixed seats to adjust the tilt angle of the first baffle.

9. The adjustable rat neck-fixing and flexion device according to claim 8, characterized in that, Each of the fixed seats is provided with a horizontal groove and a second arc-shaped groove. One end of the first baffle can slide along the horizontal groove, and the other end can slide along the second arc-shaped groove.

10. The adjustable rat neck-fixing and flexion device according to claim 8, characterized in that, The rat head restraint assembly also includes a scale that abuts one of the mounting bases, the scale being used to measure the tilt angle of the first baffle.

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