A rat fixing support for rat electric stimulation experiment

Abstract

The utility model relates to test equipment technical field, concretely relates to a rat fixing support for rat electric stimulation experiment, including outer fixed cylinder and inner fixed cylinder, the inner fixed cylinder is sleeved in the outer fixed cylinder, and both sides of outer fixed cylinder and the top of inner fixed cylinder are all seted up with fixed groove, and the fixed groove is provided with the clamping mechanism for improving the clamping stability, and the locking mechanism is seted up between the outer fixed cylinder and the inner fixed cylinder, and the locking mechanism is used for locking position, the position of rat is limited to the limit mechanism in the inner fixed cylinder, the rat is placed in, and the limit mechanism is limited to the rat in the inner placement, guarantees the stability of rat placement, and the limb of rat is fixed through fixed groove and is fixed, and further clamping is carried out with the cooperation of the clamping mechanism that sets up, effectively improves the stability of limb fixation, and it is convenient for subsequent stable test operation.

Description

Technical Field

[0001] This utility model relates to the field of experimental equipment technology, and in particular to a rat fixation brace for rat electrical stimulation experiments. Background Technology

[0002] Rats are one of the most commonly used laboratory animals in medicine. Securely and accurately restraining unanesthetized rats is a prerequisite for conducting experiments on them. Treatment experiments using electrical stimulation on rats are a routine procedure in existing studies. During these experiments, the rats need to be immobilized to ensure stable operation.

[0003] Application No. 2013101918285 discloses a rat restraint device, which uses two semi-elliptical structures, a head restraint and a tail restraint, to form an elliptical cavity structure to restrain the rat. The tail of the rat can be extended by adopting a cylindrical structure at the end, thus effectively restraining the rat.

[0004] However, during use, the rat's tail can only be extended outside the restraint for testing. When the limbs need to be used for testing, the restraint cannot meet the requirements. Furthermore, when the tail is extended outside the restraint, it cannot be effectively fixed. As the rat struggles, it sways inside the cylinder, thus affecting the operation of the test. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose a rat fixation brace for rat electrical stimulation experiments, so as to solve the problems of not meeting the usage requirements and poor fixation of specific parts.

[0006] To achieve the above objectives, this utility model provides a rat fixation brace for rat electrical stimulation experiments, comprising an outer fixation cylinder and an inner fixation cylinder. The outer and inner fixation cylinders are open at their opposite ends. The inner fixation cylinder is fitted inside the outer fixation cylinder. Fixing grooves are provided on both sides of the outer fixation cylinder and the top of the inner fixation cylinder. A clamping mechanism for improving clamping stability is provided in the fixing grooves. A locking mechanism is provided between the outer and inner fixation cylinders to lock the relative positions of the outer and inner fixation cylinders. A limiting mechanism is provided inside the inner fixation cylinder to limit the position of the rat.

[0007] A further improvement is that the clamping mechanism includes a clamping plate, which has a U-shaped structure. The clamping plate is slidably engaged on both sides of the fixed groove, and a clamping spring is connected between the clamping plate and the inside of the fixed groove.

[0008] A further improvement is that guide blocks are fixedly connected to both sides of the outer surface of the inner fixing cylinder and the top of the inner surface of the outer fixing cylinder, and the guide blocks are arranged in a figure-eight shape.

[0009] A further improvement is that the locking mechanism includes a locking block, an installation hole is provided on the inner fixing cylinder, the locking block is movably installed in the installation hole, a pressing spring is connected to one side of the bottom of the locking block, one end of the pressing spring is connected to the inside of the inner fixing cylinder, and a locking hole is provided on the outer fixing cylinder.

[0010] A further improvement is that the top of the locking block has an inclined structure.

[0011] A further improvement is that the limiting mechanism includes a limiting seat and a limiting plate. The limiting seat is installed at the bottom of the inner fixed cylinder, and the limiting plate is installed on the upper side of the outer fixed cylinder. The limiting plate has an arc-shaped structure.

[0012] A further improvement is that both the outer and inner fixing cylinders have several vent holes on their surfaces.

[0013] The beneficial effects of this utility model are as follows: by setting an outer fixation cylinder and an inner fixation cylinder, the outer fixation cylinder and the inner fixation cylinder are nested together to form a cavity for placing the rat. The outer fixation cylinder and the inner fixation cylinder are equipped with a limiting mechanism. The limiting seat is used for positioning the rat. The limiting plate limits the rat from the top, reducing the rat's activity space in the inner fixation cylinder, thereby ensuring the stability of the rat fixation.

[0014] The outer and inner fixation cylinders are equipped with fixing grooves for the rat's limbs to extend. The closed ends of the fixing grooves and the corresponding ends of the outer and inner fixation cylinders clamp and fix the rat's limbs. Furthermore, by setting up a clamping mechanism, the clamping plates move closer together with the guide blocks to clamp and fix the rat's limbs from multiple directions, thereby improving the stability of the rat's limb fixation. Moreover, the cooperation between the clamping plates and the guide blocks prevents relative rotation between the outer and inner fixation cylinders, thus ensuring the stability of use, preventing rotational misalignment, and reducing the occurrence of accidents. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in 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 only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the longitudinal cross-sectional structure of the outer fixing cylinder in an embodiment of this utility model; Figure 3 This is a schematic diagram of the transverse cross-sectional structure of the outer fixing cylinder in an embodiment of this utility model; Figure 4This is a schematic diagram of the longitudinal cross-sectional structure of the inner fixed cylinder in an embodiment of this utility model; Figure 5 This is a schematic diagram of the transverse cross-sectional structure of the inner fixed cylinder in an embodiment of this utility model; Figure 6 This is a schematic diagram of the clamping mechanism structure according to an embodiment of the present utility model; Figure 7 This is a schematic diagram of the locking mechanism structure in an embodiment of the present utility model.

[0017] The diagram is marked as follows: 1. Outer fixing cylinder; 2. Inner fixing cylinder; 3. Fixing groove; 4. Clamping plate; 5. Clamping spring; 6. Guide block; 7. Locking block; 8. Mounting hole; 9. Pressing spring; 10. Locking hole; 11. Limit seat; 12. Limiting plate; 13. Vent hole. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0019] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] like Figure 1 As shown, a rat fixation brace for an electrical stimulation experiment includes an outer fixation tube 1 and an inner fixation tube 2. The outer fixation tube 1 and the inner fixation tube 2 are open at their opposite ends. The inner fixation tube 2 is fitted inside the outer fixation tube 1. The rat is inserted through the open end of the inner fixation tube 2, and the inner fixation tube 2 is fitted inward through the open end of the outer fixation tube 1 to fix the rat. Both the outer fixation tube 1 and the inner fixation tube 2 are provided with a number of ventilation holes 13 for allowing the rat to breathe.

[0021] like Figure 3 , 5As shown, the inner fixation cylinder 2 is equipped with a limiting mechanism for limiting the position of the rat. The limiting mechanism includes a limiting seat 11 and a limiting plate 12. The limiting seat 11 is installed at the bottom inside the inner fixation cylinder 2, and the limiting plate 12 is installed on the upper inside the outer fixation cylinder 1. The limiting plate 12 has an arc-shaped structure. The limiting seat 11 is used to place the rat. The rat climbs on the limiting seat 11, with its hind limbs straddling the limiting seat 11. As the outer fixation cylinder 1 gradually slides outward from the inner fixation cylinder 2, the limiting plate 12 gradually fits against the upper side of the rat. The limiting plate 12 and the limiting seat 11 limit the rat from both the top and bottom, reducing the rat's activity space and facilitating the fixation of multiple rats. The limiting plate 12 can be slidably connected to the closed end side wall of the outer fixation cylinder 1. A bolt is threadedly connected to the top of the outer fixation cylinder 1, and the lower end of the bolt is rotatably connected to the limiting plate 12. The height of the limiting plate 12 can be adjusted by rotating the bolt, allowing for easy adjustment of the height of the limiting plate 12 to fix the rat according to the actual situation.

[0022] like Figure 2 , 4 As shown in Figure 7, a locking mechanism is provided between the outer fixing cylinder 1 and the inner fixing cylinder 2. The locking mechanism is used to lock the relative positions of the outer fixing cylinder 1 and the inner fixing cylinder 2. The locking mechanism includes a locking block 7. The inner fixing cylinder 2 has an installation hole 8. The locking block 7 is movably installed in the installation hole 8. A pressing spring 9 is connected to one side of the bottom of the locking block 7. One end of the pressing spring 9 is connected to the inside of the inner fixing cylinder 2. The outer fixing cylinder 1 has a locking hole 10. The top of the locking block 7 has an inclined structure. When the outer fixing cylinder 1 and the inner fixing cylinder 2 are fitted together, the outer fixing cylinder 1 slides along the outer surface of the inner fixing cylinder 2. When the outer fixing cylinder 1 touches the locking block 7, it is pushed along the inclined structure at the top of the locking block 7, causing it to retract into the mounting hole 8. When the locking block 7 corresponds to the locking hole 10, the locking block 7 is reset by the action of the pressing spring 9 and extends into the locking hole 10 to lock the position after the outer fixing cylinder 1 and the inner fixing cylinder 2 are fitted together. When it is necessary to release the lock, the locking block 7 is pressed and the outer fixing cylinder 1 is pulled to separate the locking block 7 from the locking hole 10.

[0023] like Figure 2 , 3 As shown in Figures 4 and 5, fixing grooves 3 are provided on both sides of the outer fixing cylinder 1 and on the top of the inner fixing cylinder 2. The fixing grooves 3 on both sides of the outer fixing cylinder 1 are used for the rat's forelimbs to extend outward and are fixed by the cooperation of the end of the inner fixing cylinder 2. The fixing groove 3 on the top of the inner fixing cylinder 2 is used for the tail to extend outward and is fixed by the cooperation of the end of the outer fixing cylinder 1. A clamping mechanism is provided in the fixing groove 3 to improve the clamping stability. The clamping mechanism clamps the forelimbs and tail to ensure the stability of the fixation when they extend.

[0024] like Figure 6As shown, the clamping mechanism includes a clamping plate 4, which has a U-shaped structure. The clamping plate 4 is slidably engaged on both sides of the fixing groove 3. Guide blocks 6 are fixedly connected to both sides of the outer surface of the inner fixing cylinder 2 and the top of the inner surface of the outer fixing cylinder 1. The guide blocks 6 are arranged in a figure-eight shape. When the outer fixing cylinder 1 and the inner fixing cylinder 2 are inserted, the clamping plate 4 is located between the guide blocks 6. As the insertion is gradually made, the clamping plate 4 moves from the large opening of the guide block 6 to the small opening. By gradually narrowing the opening, the clamping plates 4 on both sides of the fixing groove 3 move closer to each other. The closer proximity of the clamping plates 4 clamps the limbs of the rat in the fixing groove 3, ensuring the stability of the rat's limb fixation. In addition, the cooperation of the guide blocks 6 and the support plate also provides positioning guidance between the outer fixing cylinder 1 and the inner fixing cylinder 2, reducing the rotation between them. A clamping spring 5 is connected between the clamping plate 4 and the fixing groove 3. The clamping spring 5 is used to pull the clamping plate 4 to slide back to both sides of the fixing groove 3 after the outer fixing cylinder 1 and the inner fixing cylinder 2 are separated, so as to release the fixation of the rat.

[0025] In use, the rat is placed inside the inner fixation cylinder 2, with its hind limbs secured to the limiting seat 11. The rat's tail extends through the fixing groove 3 on the inner fixation cylinder 2, and the rat's forelimbs extend through the fixing grooves 3 on both sides of the outer fixation cylinder 1. The outer fixation cylinder 1 is gradually fitted onto the inner fixation cylinder 2. The limiting plate 12 extends into the inner fixation cylinder 2 to limit the rat's body. The clamping plate 4 gradually approaches and clamps the rat through the action of the guide block 6. The fixing groove 3 and the corresponding opening ends of the inner fixation cylinder 2 and the outer fixation cylinder 1 cooperate to clamp the rat, achieving multi-directional clamping. When the outer fixation cylinder 1 is in place, the locking block 7 is squeezed to slide into the locking hole 10 and extend out, thereby locking the outer fixation cylinder 1 and the inner fixation cylinder 2, facilitating subsequent stable operation.

[0026] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this utility model is limited to these examples; within the framework of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this utility model as described above, which are not provided in the details for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rat fixation brace for rat electrical stimulation experiments, comprising an outer fixation tube (1) and an inner fixation tube (2), wherein the outer fixation tube (1) and the inner fixation tube (2) are open at opposite ends, and the inner fixation tube (2) is fitted inside the outer fixation tube (1), characterized in that, Fixing grooves (3) are provided on both sides of the outer fixing cylinder (1) and the top of the inner fixing cylinder (2). A clamping mechanism for improving clamping stability is provided in the fixing groove (3). A locking mechanism is provided between the outer fixing cylinder (1) and the inner fixing cylinder (2). The locking mechanism is used to lock the relative position of the outer fixing cylinder (1) and the inner fixing cylinder (2). A limiting mechanism is provided in the inner fixing cylinder (2) for limiting the position of the rat.

2. The rat fixation brace for rat electrical stimulation experiments according to claim 1, characterized in that, The clamping mechanism includes a clamping plate (4), which is a U-shaped structure. The clamping plate (4) is slidably engaged on both sides of the fixed groove (3). A clamping spring (5) is connected between the clamping plate (4) and the inside of the fixed groove (3).

3. The rat fixation apparatus for use in electrical stimulation experiments on rats according to claim 1, characterized in that Guide blocks (6) are fixedly connected to both sides of the outer surface of the inner fixed cylinder (2) and the top of the inner surface of the outer fixed cylinder (1). The guide blocks (6) are arranged in a figure-eight shape.

4. The rat fixation apparatus for use in electrical stimulation experiments on rats according to claim 1, characterized in that, The locking mechanism includes a locking block (7), an installation hole (8) is provided on the inner fixing cylinder (2), the locking block (7) is movably installed in the installation hole (8), a pressing spring (9) is connected to one side of the bottom of the locking block (7), one end of the pressing spring (9) is connected to the inside of the inner fixing cylinder (2), and a locking hole (10) is provided on the outer fixing cylinder (1).

5. The rat immobilization apparatus for use in electrical stimulation experiments on rats according to claim 4, characterized in that The top of the locking block (7) is an inclined structure.

6. The rat fixation brace for rat electrical stimulation experiments according to claim 1, characterized in that, The limiting mechanism includes a limiting seat (11) and a limiting plate (12). The limiting seat (11) is installed at the bottom inside the inner fixed cylinder (2), and the limiting plate (12) is installed on the upper side inside the outer fixed cylinder (1). The limiting plate (12) has an arc-shaped structure.

7. The rat fixation brace for rat electrical stimulation experiments according to claim 1, characterized in that, Both the outer fixing cylinder (1) and the inner fixing cylinder (2) have several vent holes (13) on their surfaces.

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