Adjustable tweezers for animal spinal cord injury filming

Abstract

The utility model relates to the field of medical auxiliary instruments, in particular to adjustable tweezers for animal spinal cord injury filming, which comprise an L-shaped tweezers arm I and an L-shaped tweezers arm II, specifically, a through groove is formed in the surface of one support arm on the concave side of the tweezers arm II, one support arm of the tweezers arm I penetrates through the through groove, and the other support arm of the tweezers arm II penetrates through the through groove. The first tweezer arm and the second tweezer arm are combined to form a [-shaped structure. Through the cooperation of the first tweezers arm and the second tweezers arm in the L-shaped state, the distance between the first tweezers arm and the second tweezers arm can be freely adjusted, the two tweezers arms are kept parallel all the time in the operation process, it is guaranteed that the damage degrees of the two sides of the spinal cord are similar, and the problem that the damage degrees of ventral spinal cord tissue and dorsal spinal cord tissue differ too much is solved; and the minimum closing distance between the two tweezers arms can be controlled through the limiting plate, so that the construction of light, moderate and severe spinal cord injury models is realized.

Description

Technical Field

[0001] The utility model relates to the field of medical auxiliary instruments, in particular to an adjustable forceps for making animal spinal cord injury membranes. Background Art

[0002] The construction of a spinal cord injury model is the cornerstone of research on its pathogenesis and rehabilitation treatment. Among them, the crush injury model constructed by tools such as forceps and artery clamps is the most commonly used injury modeling method in current spinal cord injury-related research. Due to its own structural design, ordinary V-shaped forceps will cause inconsistent crush injuries to the dorsal spinal cord tissue far from the tip of the forceps and the ventral spinal cord tissue close to the opening of the tip of the forceps. Usually, the dorsal spinal cord tissue far from the tip of the forceps will be more severely crushed, while the ventral spinal cord tissue close to the tip of the forceps (where the opening spacing is significantly larger) has less damage. This inconsistent problem will lead to the instability of the spinal cord injury model and it is difficult to effectively distinguish the degree of spinal cord injury. To solve this problem, an adjustable forceps for making animal spinal cord injury membranes is proposed. Content of the Utility Model

[0003] In view of the deficiencies of the prior art, the utility model provides the following technical solutions:

[0004] An adjustable forceps for making animal spinal cord injury membranes, comprising: a forceps arm one in an L shape and a forceps arm two in an L shape.

[0005] Specifically, a through groove is formed on the surface of one branch arm on the concave side of the forceps arm two, one branch arm of the forceps arm one passes through the through groove, and the forceps arm one and the forceps arm two are combined to form a U-shaped structure.

[0006] As an improvement of the above technical solution, the branch arm of the forceps arm one passing through the through groove is a column rod, the column rod is threadedly connected to the through groove, one end of the column rod far from the forceps arm one has an integrally formed nut, the other end of the column rod has a connection ring, and an inner groove penetrating to the inside is formed on one side of the forceps arm one close to the connection ring, and the connection ring is arranged inside the inner groove.

[0007] As an improvement of the above technical solution, the lower end of the forceps arm one has a cutting part, and a limiting plate is magnetically adsorbed on one side of the cutting part.

[0008] As an improvement of the above technical solution, a limiting groove is formed on one side of the forceps arm one, one end of the limiting plate is fixed with an insertion part, filling parts are arranged on both sides of the insertion part, and the insertion part and the filling parts are embedded inside the limiting groove.

[0009] Advantages of the Utility Model

[0010] Through the cooperation between the forceps arm 1 and the forceps arm 2 in the L-shaped state, the free adjustment function of the distance between the two can be realized. When opening and clamping are required, it is only necessary to control the corresponding forceps arm 1 and the forceps arm 2 to separate or approach each other. The distance between the two forceps arms can be accurately controlled. It is not limited by the V-shaped structure of conventional forceps. During the operation, the two forceps arms always remain parallel to ensure that the degree of injury on both sides of the spinal cord is similar, and will not cause the problem of too large a difference in the degree of injury of the spinal cord tissue on both sides. The minimum closing distance between the two forceps arms can be controlled by the limit plate, so as to realize the construction of mild, moderate and severe spinal cord injury models. After the operation is completed, the friction between the support arm and the through groove will form a position limit, thereby ensuring the stability between the structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0012] Figure 2 It is an exploded view of the utility model;

[0013] Figure 3 for Figure 2 Enlarged structural diagram of point A in the middle.

[0014] Figure numerals: 10, forceps arm one; 11, cutting part; 12, inner groove; 13, limiting groove; 14, limiting plate; 15, inserting part; 16, filling part; 20, forceps arm two; 21, through groove; 30, column rod; 31, connecting ring. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0016] Forceps are usually used in existing spinal cord compression injury modeling schemes. However, due to the V-shaped structure of the forceps, the dorsal spinal cord tissue away from the tip of the forceps and the ventral spinal cord tissue close to the opening of the tip of the forceps will suffer inconsistent compression injuries. Usually, the dorsal spinal cord tissue away from the tip of the forceps will suffer more severe compression injuries, while the ventral spinal cord tissue close to the tip of the forceps (the opening spacing is significantly larger) will suffer less damage. This inconsistency problem will lead to the instability of the spinal cord injury model and make it difficult to effectively distinguish the degree of spinal cord injury.

[0017] To solve the above problems, see Figures 1 to 3 , an adjustable forceps for forming membranes for animal spinal cord injuries, comprising: an L-shaped forceps arm 10 and an L-shaped forceps arm 20.

[0018] Specifically, a through groove 21 is formed through the surface of one of the support arms on the concave side of the forceps arm two 20. One of the support arms of the forceps arm one 10 passes through the through groove 21, and the forceps arm one 10 and the forceps arm two 20 are combined to form a U-shaped structure.

[0019] The above scheme can ensure the linear movement function between the forceps arm one 10 and the forceps arm two 20. When support is needed, the distance between the forceps arm one 10 and the forceps arm two 20 can be enlarged. When clamping is needed, the distance between the forceps arm one 10 and the forceps arm two 20 can be reduced. After the forceps arm one 10 and the forceps arm two 20 are adjusted, they are restricted by the friction force between the support arm and the through groove 21. The friction force at the connection can also be increased by adding rubber rings or rubber pads to form a function similar to damping, so as to ensure the stability of the adjustment after direct connection.

[0020] In some cases, it may be necessary to keep the tightened state between the forceps arm one 10 and the forceps arm two 20 for a certain period of time. In this case, if the operator times it himself, there may be a problem of misremembering. To avoid this problem, a pressure sensor (not shown in the figure) and a timer (not shown in the figure) can also be set on the support arm of the forceps arm one 10 or the forceps arm two 20. When the forceps arm one 10 and the forceps arm two 20 are clamped, the pressure sensor senses the pressure and starts the timer to time. After the preset time, a buzzer sounds to remind.

[0021] While achieving the same degree of closure on the dorsal and ventral sides of the spinal cord tissue through the pressure sensor and the timer, the minimum closing distance and closing time of the forceps arms are controlled. When the closing time is 30 s, the smaller the closing distance, the more severe the spinal cord injury, and the larger the distance, the lighter the injury.

[0022] Conventional methods for grading spinal cord injuries include: a spacing of 0.6 mm is a mild injury, a spacing of 0.4 mm is a moderate injury, a spacing of 0.2 mm is a severe injury, and a spacing of 0 mm can achieve a complete transection injury.

[0023] In some cases, only relying on friction for stability may result in insufficient stability between the structures. To avoid the problem of structural loosening, please refer to Figure 1 and Figure 2 The support arm of the forceps arm one 10 passing through the through groove 21 is a column rod 30. The column rod 30 is threadedly connected to the through groove 21. One end of the column rod 30 away from the forceps arm one 10 has an integrally formed nut, and the other end of the column rod 30 has a connection ring 31. An inner groove 12 penetrating to the inside is formed on one side of the forceps arm one 10 close to the connection ring 31, and the connection ring 31 is arranged inside the inner groove 12.

[0024] The fixing and adjustment between the two is achieved by a threaded connection structure. The connection between the threaded column 30 and the through groove 21 can be adjusted according to the actual situation. The length of the threaded screw is the distance between the two forceps arms. Figure 3 In the state shown in the figure, the connection ring 31 is embedded in the internal state to realize the rotation with a fixed position, that is, when the column rod 30 is screwed and displaced, the relative position between the forceps arm 10 and the column rod 30 remains unchanged, while the distance between the support arm of the forceps arm 10 and the forceps arm 20 changes. The adjustment function of the clamping or opening state is formed by the change in the distance between the two. Since a threaded structure is adopted, except for the shaking between the connection ring 31 and the inner groove 12, the position of the rest of the structure is stable, and the gap between the connection ring 31 and the inner groove 12 can be filled with a rubber ring for reinforcement.

[0025] In one embodiment, see Figure 1 and Figure 2 The lower end of the forceps arm 10 has a cutting portion 11, and a limiting plate 14 is magnetically adsorbed on one side of the cutting portion 11.

[0026] Since the cutting portion 11 is provided at the lower end of the tweezer arm 10, the end of the tweezer arm 10 has a cutting function. In order to further ensure the normal use of the structure, the cutting portion 11 is limited by a magnetically adsorbed limiting plate 14. When cutting is required, the limiting plate 14 is removed so that the cutting portion 11 is exposed and cutting can be performed. When cutting is not required, the limiting plate 14 can be attached to the position of the cutting portion 11 so that the blade of the cutting portion 11 is blocked and cannot be cut, thereby only having the function of the tweezers themselves.

[0027] In order to further facilitate the control of the exposure and shielding of the cutting portion 11, please refer to Figure 1 and Figure 2 A limiting groove 13 is provided on one side of the forceps arm 10 , an inserting portion 15 is fixed to one end of the limiting plate 14 , and filling portions 16 are provided on both sides of the inserting portion 15 , and the inserting portion 15 and the filling portion 16 are embedded in the limiting groove 13 .

[0028] The insertion part 15 is inserted and withdrawn for fixing. When cutting is required, the insertion part 15 is pushed into the interior of the limiting groove 13. At this time, the limiting plate 14 will move up with the insertion part 15, thereby exposing the cutting part 11. When cutting is not required, the insertion part 15 is pushed down until the cutting part 11 is covered. Since the limiting plate 14 is fixed by magnetic adsorption, during operation, the limiting plate 14 will always be tightly fixed on the inner side of the tweezer arm 10.

[0029] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. An adjustable forceps for forming membranes for animal spinal cord injuries, characterized in that: Comprising: A pair of tweezers arm one (10) in an L shape; And A pair of tweezers arm two (20) in an L shape. A through groove (21) is provided on the surface of one of the arms on the concave side of the tweezers arm two (20). One of the arms of the tweezers arm one (10) passes through the through groove (21), and the tweezers arm one (10) and the tweezers arm two (20) are combined to form a U-shaped structure.

2. The adjustable forceps for forming membranes for animal spinal cord injuries according to claim 1, characterized in that: The arm of the tweezers arm one (10) passing through the through groove (21) is a column rod (30). The column rod (30) is threadedly connected to the through groove (21). One end of the column rod (30) away from the tweezers arm one (10) has an integrally formed nut. The other end of the column rod (30) has a connection ring (31). An inner groove (12) penetrating to the inside is provided on one side of the tweezers arm one (10) close to the connection ring (31). The connection ring (31) is arranged inside the inner groove (12).

3. The adjustable forceps for forming membranes for animal spinal cord injuries according to claim 1, characterized in that: The lower end of the tweezers arm one (10) has a cutting part (11). A limiting plate (14) is magnetically adsorbed on one side of the cutting part (11).

4. The adjustable forceps for forming membranes for animal spinal cord injuries according to claim 3, characterized in that: A limiting groove (13) is provided on one side of the tweezers arm one (10). One end of the limiting plate (14) is fixed with an insertion part (15). Filling parts (16) are arranged on both sides of the insertion part (15). The insertion part (15) and the filling parts (16) are embedded inside the limiting groove (13).

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