Rat intramuscular injection assist device

Abstract

The utility model relates to the technical field of animal experiment auxiliary devices, solves the problem that in the prior art, the animal fixing mode is low in efficiency, and discloses a rat intramuscular injection auxiliary device which comprises a bottom plate, a plurality of fixing assemblies and a plurality of tarsal bone fixing parts. The fixing assembly comprises a base and two fixing frames. The fixing frame is arc-shaped; one end of each fixing frame is connected with one side of the base, and the other end of each fixing frame extends away from the base; a fixing space for wrapping the trunk of the rat is formed between the two fixing frames; the plurality of bases are arranged on the bottom plate at intervals; one fixing assembly and two tarsal bone fixing parts form one group; in each group, the tarsal bone fixing pieces are arranged on the bottom plate at intervals. Through combined use of the multiple fixing assemblies and the tarsal bone fixing part, stable fixing of multiple rats is achieved.

Description

Technical Field

[0001] This application relates to the technical field of animal experimental auxiliary devices, and in particular to a rat intramuscular injection aid. Background Technology

[0002] Common drug administration methods for laboratory animals include injection, gavage, and nasal drops. The appropriate method is selected based on the experimental purpose, animal species, drug formulation, and dosage. Injection methods mainly include intradermal injection, subcutaneous injection, intramuscular injection, intraperitoneal injection, and intravascular injection. Intramuscular injection is generally used for drugs with specific administration requirements, or for drugs that are insoluble or poorly soluble in water but suspended in oils or other solvents. Muscle tissue is rich in capillaries, which are porous lipid membranes, allowing drugs to pass through faster than through other biological membranes. Intramuscular injection results in faster drug absorption and a faster onset of action compared to oral or subcutaneous injection. Intramuscular injection sites in laboratory animals are often the inner or outer thigh muscles.

[0003] In existing techniques, when operating on mice, researchers can restrain the animal with one hand, expose the leg muscles, and perform injections. However, rats are larger and cannot be handled with one hand; two people are required, one to restrain the animal and the other to perform the injection, which is inefficient. Especially when multiple rats need to be injected, the aforementioned procedure must be repeated continuously, resulting in low efficiency. Utility Model Content

[0004] To address the issue of low efficiency in animal fixation methods in existing technologies, this application provides a rat intramuscular injection aid.

[0005] The following technical solution is adopted:

[0006] A rat intramuscular injection aid includes a base plate, several fixation components, and several tarsal fixation members. Each fixation component includes a base and two fixation frames. Each fixation frame is arc-shaped. One end of each of the two fixation frames is connected to one side of the base, and the other ends extend away from the base. A fixation space for enclosing the rat's torso is formed between the two fixation frames. Several bases are spaced apart on the base plate. One fixation component and two tarsal fixation members form a group. In each group, the tarsal fixation members are spaced apart on the base plate.

[0007] By employing the above-described technical solution, the rat's torso is stably immobilized by wrapping it with two arc-shaped fixing frames of the fixation component. This facilitates keeping the rat still during injection, reducing struggling and improving the accuracy and safety of the injection. Simultaneously, the tarsal fixation component further stabilizes the rat's feet, enhancing overall stability. The combined use of multiple fixation components and tarsal fixation components can meet the immobilization needs of multiple rats.

[0008] Optionally, the base plate is made of a flexible material.

[0009] By adopting the above technical solution, the base plate material is relatively soft, and it can be rolled up for daily placement and carrying, making it convenient to carry and saving space.

[0010] Optionally, a soft magnetic sheet is provided at the bottom of the base plate.

[0011] By adopting the above technical solution, it has a magnetic attraction function and can be attached to the metal test platform to prevent animals from struggling and making the operation unstable.

[0012] Optionally, the fixing frame includes two arc-shaped rods and a connecting rod; one end of each of the two arc-shaped rods is connected to the base, and the other end is connected to one end of the connecting rod; a plurality of reinforcing rods parallel to the connecting rod are provided in the middle of the arc-shaped rods.

[0013] By adopting the above technical solution, a more stable fixation frame structure is formed through the combination of two arc-shaped rods and a connecting rod, which can more effectively wrap and fix the rat's torso. The addition of reinforcing rods further enhances the strength and stability of the fixation frame, preventing deformation or damage caused by the rat struggling during injection.

[0014] Optionally, one of the arc-shaped rods is slidably connected to the base, and both the connecting rod and the reinforcing rod are telescopic rods.

[0015] By adopting the above technical solutions, the sliding connection between the arc-shaped rod and the base, as well as the telescopic design of the connecting rod and the reinforcing rod, allows the fixing frame to be flexibly adjusted according to the body size of different rats, providing a wider range of applicability.

[0016] Optionally, the arc-shaped rod has elastic deformation capability.

[0017] By adopting the above technical solution, the elastic deformation capability of the arc rod allows the fixation frame to better adapt to the shape and contour of the rat's torso, providing a tighter and more comfortable fixation effect.

[0018] Optionally, one of the two connecting rods located in the same group is provided with a tension band, and the other connecting rod is provided with a locking block through which one end of the tension band passes; the locking block is provided with a limiting component to restrict the tension band from continuing to move after sliding.

[0019] By employing the aforementioned technical solution, the combined design of the tension band and locking block allows the auxiliary device to further enhance the fixation effect on the rat. By adjusting the tightness of the tension band, a tighter wrapping and fixation of the rat's torso can be achieved.

[0020] Optionally, the limiting component includes a locking hook and an elastic element; a connecting groove is provided in the locking block; the locking hook is rotatably connected to the connecting groove via a rotating shaft; a limiting groove is provided on the inner wall of the locking block, and one end of the locking hook can pass through the groove to abut against the tension band; a clearance groove is provided on the outer wall of the locking block for the locking hook to pass through; the elastic element ensures that the locking hook always tends to abut against the tension band.

[0021] By adopting the above technical solution, the setting of the limiting component ensures the stability and reliability of the tension belt during the fixing process, and prevents fixing failure caused by the slippage of the tension belt.

[0022] Optionally, the tarsal fixation member is made of a double-sided adhesive fixation material; the tarsal fixation member has a cavity in the middle for the rat's foot to enter.

[0023] By adopting the above technical solution, the tarsal fixation component uses a double-sided adhesive fixation material, which can be firmly attached to the rat's foot, thus achieving effective fixation of the rat's foot.

[0024] In summary, this application includes at least one of the following beneficial effects:

[0025] 1. Improved injection accuracy and safety: The combination of fixation components and tarsal fixation devices achieves stable fixation of rats, reducing struggling and movement, thereby improving the accuracy and safety of injection.

[0026] 2. Enhanced applicability and flexibility: The sliding connection and telescopic design of the fixed frame, as well as the elastic deformation capability of the arc-shaped rod, allow the assist device to be flexibly adjusted according to the body shape of rats of different sizes, providing a wider range of applicability.

[0027] 3. Enhanced support and fixation: The design of the tension band and limiting components, as well as the adhesive fixation and cavity design of the tarsal fixation piece, enable rats to remain comfortable and stable during injection, reducing damage caused by improper fixation. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure when the rat was immobilized in Example 1;

[0029] Figure 2 This is a structural schematic diagram of Embodiment 1;

[0030] Figure 3 This is a schematic diagram of the structure after curling in Example 1;

[0031] Figure 4 This is a schematic diagram of the fixed component structure in Embodiment 2;

[0032] Figure 5 yes Figure 4Top view and cross-sectional view of the base structure;

[0033] Figure 6 This is a schematic diagram of the fixed component structure in Embodiment 3;

[0034] Figure 7 yes Figure 6 A magnified structural diagram at point A;

[0035] Figure 8 yes Figure 7 A cross-sectional view of the locking block structure.

[0036] Explanation of reference numerals in the attached drawings: 1. Base plate; 11. Soft magnetic sheet; 2. Tarsal fixation component; 21. Cavity; 3. Fixing assembly; 4. Base; 41. Slide groove; 5. Fixing frame; 51. Arc-shaped rod; 511. First arc-shaped rod; 512. Second arc-shaped rod; 52. Slider; 521. Linkage rod; 53. Connecting rod; 531. First sleeve; 532. First rod body; 54. Reinforcing rod; 541. Second sleeve; 542. Second rod body; 55. Fixing space; 61. Tension band; 611. Groove; 62. Locking block; 621. Through groove; 622. Connecting groove; 623. Limiting groove; 624. Relief groove; 7. Limiting assembly; 71. Locking hook; 711. Rotating shaft; 72. Elastic element. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1 To be continued Figure 8 This application will be described in further detail.

[0038] Example 1:

[0039] Because rats are large, they cannot be handled with one hand; two people are required: one to restrain the animal and the other to administer the injection, which is inefficient. This is especially true when multiple rats need to be injected, as the procedure must be repeated continuously, further reducing efficiency.

[0040] Therefore, to address the issue of low injection efficiency in animals using existing technologies, this embodiment provides a rat intramuscular injection aid. It includes a base plate 1, several fixing components 3, and several tarsal fixation members 2. The base plate 1 provides support, the multiple fixing components 3 fix the rat's torso, and the tarsal fixation members 2 fix the rat's hind legs, thereby allowing multiple rats to be fixed and enabling a single experimenter to administer injections to rats in batches.

[0041] Specifically, the fixation component 3 includes a base 4 and two fixation frames 5. The base 4 is a rectangular strip structure, and its bottom is connected to the surface of the base plate 1. Several bases 4 are spaced apart on the base plate 1, and the length direction of the base 4 is perpendicular to the length direction of the base plate 1. The fixation frames 5 are arc-shaped. One end of each of the two fixation frames 5 is connected to one side of the base 4, and the other end extends away from the base 4. The dots of the two fixation frames 5 are positioned opposite each other. An approximately cylindrical fixation space 55 is formed between the two fixation frames 5 to wrap around the rat's torso. One fixation component 3 and two tarsal fixation pieces 2 form a group. In each group, the tarsal fixation pieces 2 are spaced apart on the base plate 1.

[0042] Furthermore, the base plate 1 is made of a flexible material. Preferred flexible materials include soft PVC, rubber, and metal. In this embodiment, the base plate 1 is made of a rectangular strip of soft PVC material. The soft PVC is composed of PVC resin, plasticizers, stabilizers, and other additives, with a relatively high proportion of plasticizers, making the PVC soft. By using a flexible material to make the base plate 1, the surface of the soft PVC is smooth, making it easy to clean and disinfect, and adaptable to various tabletops. Simultaneously, the soft PVC material can be rolled up for daily storage and transport, saving space, and can be flattened during use.

[0043] Furthermore, a soft magnetic sheet 11 is provided at the bottom of the base plate 1. The soft magnetic sheet 11 covers the bottom of the base plate 1 and can be rolled up as the base plate 1 is rolled up. The soft magnetic sheet 11 has a magnetic attraction function, which allows it to be easily adsorbed onto a metal surface, such as a laboratory table, when the base plate 1 is unfolded, thereby achieving rapid fixation of the auxiliary device and avoiding the risk of inconvenience or rat injury caused by the movement of the auxiliary device during injection. Moreover, the soft magnetic sheet 11 is relatively heavy, which increases the overall adsorption of the base plate 1.

[0044] Furthermore, two fixing frames 5 are respectively disposed on both sides of the base 4 and are positioned opposite each other. Each fixing frame 5 includes two arc-shaped rods 51 and a connecting rod 53. The two arc-shaped rods 51 are spaced apart (the spacing is determined according to the rat's trunk length), with one end of each arc-shaped rod 51 connected to the base 4 and the other end extending away from the base 4, and the circular shape of the arc-shaped rod 51 positioned above the base 4. The connecting rod 53 is perpendicular to the two arc-shaped rods 51, and the arc-shaped rods 51 are respectively connected to both ends of the connecting rod 53. Several reinforcing rods 54 parallel to the connecting rods 53 are disposed in the middle of each arc-shaped rod 51. The ends of each reinforcing rod 54 are connected to the corresponding arc-shaped rods 51.

[0045] The implementation principle of this embodiment is as follows:

[0046] Rats are guided into the fixation space 55 through two fixed frames 5, positioned near one end of the tarsal fixation piece 2. Once in the appropriate position, the rats' feet are secured using the tarsal fixation piece 2. Several rats are then secured sequentially. During injection, only one hand is needed to hold the rat down to limit excessive movement, while the other hand holds the syringe to administer the injection. This simplifies the overall rat injection procedure and allows for batch injections, resulting in higher efficiency.

[0047] Example 2:

[0048] In this embodiment, the base plate 1 and the tarsal fixation component 2 have the same structure and principle. The difference lies in the fact that in the fixation component 3 of this embodiment, both the connecting rod 53 and the reinforcing rod 54 are set as telescopic rods, which can be adjusted according to the animal's body size.

[0049] Specifically, the connecting rod 53 includes a first sleeve 531 and a first rod body 532. The first rod body 532 is coaxially inserted into the first sleeve 531 and slides relative to the first sleeve 531. One end of the first sleeve 531 is connected to an arc-shaped rod 51, which is referred to as the first arc-shaped rod 511 for ease of description. The other end is connected to the first rod body 532. The end of the first rod body 532 away from the first sleeve 531 is connected to another arc-shaped rod 51, which is referred to as the second arc-shaped rod 512 for ease of description. The reinforcing rod 54 includes a second sleeve 541 and a second rod body 542. One end of the second sleeve 541 is connected to the first arc-shaped rod 511, and the other end allows the second rod body 542 to coaxially insert into the second sleeve 541. The end of the second rod body 542 away from the second sleeve 541 is connected to the second arc-shaped rod 512. The first arc-shaped rod 511 is slidably connected to the base 4. That is, the first arc-shaped rod 511 slides, while the second arc-shaped rod 512 is fixed.

[0050] Furthermore, a groove 41 is provided inside the base 4, extending along the length of the base 4. A slider 52 is provided at one end of the first arc-shaped rod 511, and the slider 52 is slidably connected in the groove 41. Adjacent sliders 52 are connected by a linkage rod 521, allowing the two sliders 52 to slide simultaneously. This enables adjustment of the lengths of the connecting rod 53 and the reinforcing rod 54.

[0051] The implementation principle of this embodiment is as follows:

[0052] The lengths of the connecting rod 53 and the reinforcing rod 54 are adjusted by a telescopic structure to accommodate rats of different sizes.

[0053] Example 3:

[0054] This embodiment has the same base plate 1, base 4, connecting rod 53, and reinforcing rod 54 as Embodiment 2. Their structure and principle are the same; the difference lies in that the arc-shaped rod 51 in this embodiment has elastic deformation capability. The arc-shaped rod 51 is made of hard polymer compound or hard metal material, possessing both deformation capability and the elastic ability to recover its original shape after deformation. Among the two connecting rods 53 located in the same group, one connecting rod 53 is equipped with a tension band 61 (generally installed on the first sleeve 531 to ensure the range of telescopic adjustment), and the other connecting rod 53 is equipped with a locking block 62 (also connected to the first sleeve 531) through which one end of the tension band 61 passes. The locking block 62 is equipped with a limiting component 7 to restrict the continued movement of the tension band 61 after sliding.

[0055] Furthermore, the locking block 62 has a rectangular structure, and a through groove 621 is formed along the length of the vertical connecting rod 53. One end of the tension band 61 can pass through the locking block 62 via the through groove 621. A connecting groove 622 is formed in the locking block 62. The vertical limiting component 7 of the locking block 62 includes a locking hook 71 and an elastic element 72. The locking hook 71 has a Z-shaped structure, and the middle part of the locking hook 71 is rotatably connected to the connecting groove 622 via a pivot 711 to form a lever structure. A limiting groove 623 is formed on the inner wall of the locking block 62 where the through groove 621 is located, and the two are connected. One end of the locking hook 71 can pass through the limiting groove 623 and abut against the tension band 61. Several grooves 611 are formed at intervals along the length of the tension band 61 to increase the limiting stability of the locking hook 71 on the tension band 61. A relief groove 624 is formed on the outer wall of the locking block 62 for the locking hook 71 to pass through, and the relief groove 624 is connected to the connecting groove 622. The elastic element 72 ensures that the locking hook 71 always tends to resist the tension band 61. The elastic element 72 is a torsion spring and is coaxially sleeved on the rotating shaft 711. One end of the elastic element 72 is connected to the bottom inner wall of the connecting groove 622, and the other end is connected to the locking hook 71.

[0056] Furthermore, the tarsal fixation component 2 is made of a double-sided adhesive fixing material. Preferably, it is a hooked band, and the tarsal fixation component 2 consists of two mutually adsorbing surfaces: one is a hooked surface with small barbs, and the other is a hairy surface with fine hairs. The side with the hairy surface is glued to the base plate 1. A cavity 21 is left in the middle of the tarsal fixation component 2 for the rat's foot to enter, and the cavity 21 does not contain the hooked surface.

[0057] The implementation principle of this embodiment is as follows:

[0058] The rat is more stably fixed by using an arc-shaped rod 51 with elastic deformation capability and a tension band 61 to further adjust the fixation space 55.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rat intramuscular injection aid, characterized in that: The device includes a base plate (1), several fixing components (3) and several tarsal fixation members (2); the fixing component (3) includes a base (4) and two fixing frames (5); the fixing frames (5) are arc-shaped; one end of each of the two fixing frames (5) is connected to one side of the base (4), and the other end extends away from the base (4); a fixing space (55) for wrapping the rat's trunk is formed between the two fixing frames (5); several bases (4) are spaced apart on the base plate (1); one fixing component (3) and two tarsal fixation members (2) form a group; in each group, the tarsal fixation members (2) are spaced apart on the base plate (1).

2. The rat intramuscular injection aid according to claim 1, characterized in that: The base plate (1) is made of a flexible material.

3. The rat intramuscular injection aid according to claim 2, characterized in that: A soft magnetic sheet (11) is provided at the bottom of the base plate (1).

4. The rat intramuscular injection aid according to claim 1, characterized in that: The fixed frame (5) includes two arc-shaped rods (51) and a connecting rod (53); one end of each of the two arc-shaped rods (51) is connected to the base (4), and the other end is connected to one end of the connecting rod (53); a number of reinforcing rods (54) parallel to the connecting rod (53) are provided in the middle of the arc-shaped rods (51).

5. The rat intramuscular injection aid according to claim 4, characterized in that: The first arc-shaped rod (51) is slidably connected to the base (4), and the connecting rod (53) and the reinforcing rod (54) are both telescopic rods.

6. The rat intramuscular injection aid according to claim 5, characterized in that: The arc-shaped rod (51) has elastic deformation capability.

7. The rat intramuscular injection aid according to claim 6, characterized in that: Two connecting rods (53) located in the same group, one of the connecting rods (53) is provided with a tension band (61), and the other connecting rod (53) is provided with a locking block (62) through which one end of the tension band (61) passes; the locking block (62) is provided with a limiting component (7) to restrict the tension band (61) from continuing to move after sliding.

8. The rat intramuscular injection aid according to claim 7, characterized in that: The limiting component (7) includes a locking hook (71) and an elastic element (72); a connecting groove (622) is provided in the locking block (62); the locking hook (71) is rotatably connected to the connecting groove (622) via a rotating shaft (711); a limiting groove (623) is provided on the inner wall of the locking block (62), and one end of the locking hook (71) can pass through the limiting groove (623) to abut against the tension band (61); a relief groove (624) is provided on the outer wall of the locking block (62) for the locking hook (71) to pass through; the elastic element (72) makes the locking hook (71) always tend to abut against the tension band (61).

9. The rat intramuscular injection aid according to claim 1, characterized in that: The tarsal fixation member (2) is made of double-sided adhesive fixation material; the tarsal fixation member (2) has a cavity (21) in the middle for the rat's foot to enter.

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