Nail-holding screwdriver for operation

Abstract

The nail-holding screwdriver comprises a screwdriver rod, a sleeve is arranged at one end of the screwdriver rod, an annular groove is formed in the position, close to an opening, of the inner wall of the sleeve, an elastic rubber ring is arranged in the annular groove in a matched mode, and the inner diameter of the elastic rubber ring is smaller than that of the sleeve. The screw can be held by itself, operation and use are facilitated, and the operation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a nail holding screwdriver for operation belongs to the technical field of operation medical instrument. BACKGROUND

[0002] The screwdriver is also called as a screwdriver, and is a special tool for fastening or unscrewing screws. According to the shape of the screw or screw cap, the head of the screwdriver is also provided with different structures, for example, the head of the screwdriver can be provided with a character type or a cross type, so as to be matched with a character groove or a cross groove on the screw cap. Of course, the cap of the screw can also be an outer hexagonal or inner hexagonal structure, and the head of the screwdriver needs to be provided with an inner hexagonal sleeve structure or an outer hexagonal rod body. In orthopedic surgery, the screw with the outer hexagonal cap structure is used, and the screw needs to be held by one hand and placed in position, and the sleeve of the screwdriver is used to cover the cap and rotate by the other hand. During the operation, due to the small space, such operation is inconvenient, the vision is affected, and the operation efficiency is affected. Therefore, a screwdriver capable of holding the screw automatically is needed. SUMMARY

[0003] In view of the problems existing in the prior art, the utility model provides a nail holding screwdriver for operation to solve the problem that the existing screwdriver cannot hold the screw.

[0004] The technical scheme of the utility model is as follows:

[0005] A nail holding screwdriver for operation, comprising a screwdriver rod, a sleeve is arranged at one end of the screwdriver rod, an annular groove is arranged on the inner wall of the sleeve close to the opening, and an elastic rubber ring is matched and arranged in the annular groove, and the inner diameter of the elastic rubber ring is smaller than the inner diameter of the sleeve.

[0006] Further, the elastic rubber ring is a silicone rubber ring.

[0007] Further, the sleeve is a hexagonal sleeve.

[0008] Further, a handle is sleeved at the other end of the screwdriver rod.

[0009] Advantages: the screwdriver provided by the utility model is provided with a hexagonal sleeve at one end of the screwdriver rod, and can be used to fasten or unscrew the screw with the outer hexagonal cap structure. In order to facilitate the holding of the screw, an annular groove is arranged on the inner wall of the hexagonal sleeve close to the opening, and a silicone rubber ring is matched and arranged in the annular groove, and the inner diameter of the rubber ring is smaller than the diameter of the hexagonal circumscribed circle. In this way, because the rubber ring can have a certain deformation amount, the cap of the screw can be inserted into the sleeve of the screwdriver by slightly using force, and after the hand is released, the cap of the screw is limited by the rubber ring, and the screw will not fall off from the screwdriver, which is convenient for operation and use, and improves the operation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 This is the front view of the nail-holding screwdriver of this utility model.

[0011] Figure 2 for Figure 1 AA section view in the image.

[0012] Figure 3 yes Figure 2 Enlarged view of the sleeve structure at the left end of the middle section.

[0013] Figure 4 yes Figure 3 BB section view in the middle.

[0014] Figure 5 yes Figure 2 A schematic diagram of the screwdriver rod.

[0015] The markings in the diagram are: 1 screwdriver rod, 2 handle, 3 hexagonal socket, 4 silicone rubber ring, 21 tail cap, 22 retaining ring, and 31 annular groove. Detailed Implementation

[0016] The present invention will now be described in a clear and complete manner with reference to the accompanying drawings.

[0017] like Figures 1-5 As shown, a surgical screwdriver includes a screwdriver rod 1, a sleeve structure fixedly mounted at one end of the screwdriver rod 1, and a handle 2 sleeved at the other end of the screwdriver rod 1. To prevent the handle from falling off, retaining rings 22 and end caps 21 are fixedly mounted on the screwdriver rod at both ends of the handle. The handle is located between the retaining rings 22 and the end caps 21. The handle 2 is fixedly connected to the screwdriver rod 1, and both can rotate synchronously around the axis of the screwdriver rod, driving the sleeve structure to rotate. The sleeve structure can accommodate the end cap of the screw to be tightened. The cross-sectional shape of the sleeve matches the shape of the end cap of the screw.

[0018] When the screwdriver is used vertically downwards, i.e., with the handle on top and the socket on the bottom, if the screw cap is inserted into the socket beforehand, the screw will automatically fall out of the socket once the hand is removed, meaning the screwdriver cannot hold the screw. To solve this problem, we provide an annular groove 31 on the inner wall of the socket near the opening, and an elastic rubber ring 4 is fitted inside the annular groove 31. Preferably, the elastic rubber ring is a silicone rubber ring, which is elastic, non-toxic, and easy to disinfect during surgery. The inner diameter of the elastic rubber ring is smaller than the inner diameter of the socket, i.e., the outer diameter of the screw cap is larger than the inner diameter of the rubber ring. When the screw cap is inserted into the socket, a little force is needed to overcome the elasticity of the rubber ring to deform it before insertion. Once the screw cap passes the rubber ring and enters the space inside the socket, the rubber ring will prevent the screw from falling out automatically, thus creating a self-holding effect, unless external force is used to overcome the elasticity of the rubber ring again.

[0019] The shape of the screw tail cap can be multiple choices, for example, it can be triangular, quadrangular, hexagonal, etc., and the cross-sectional shape of the sleeve is a regular triangle, a square, a regular hexagon, wherein the hexagonal screw tail cap is more common, and the corresponding sleeve is a hexagonal sleeve. Figure 4 The hexagonal structure is also commonly given. Of course, regardless of the structure, the screw can be self-held by the sleeve due to the presence of the rubber ring with a smaller inner diameter (for example, the inner diameter of the rubber ring is smaller than the diameter of the circumscribed circle of the hexagonal structure). When used in surgery, first insert the top cap of the screw into the sleeve, hold the handle, align the tip of the screw with the part to be nailed, and rotate or press the handle to nail the screw. When the screw is rotated in place, a little force upward or outward can make the sleeve and the screw cap separate.

[0020] Although the holding nail screwdriver given in the utility model is mainly used in shell surgery, it can free one hand from holding the nail, does not affect the surgical vision, and has the advantage of improving the surgical efficiency; the person skilled in the art should understand that the holding nail screwdriver described in the utility model can also be used in the general mechanical field or as a conventional tool in daily life, which also has the characteristics of not needing to hold the nail, freeing one hand, and improving the operation efficiency.

Claims

1. A surgical nail holding screwdriver comprising a screwdriver shaft, a handle being provided at one end of the screwdriver shaft, characterized in that, The other end of the improved chisel rod is provided with a sleeve, an annular groove is arranged on the inner wall of the sleeve close to the opening, and an elastic rubber ring is matched in the annular groove, and the inner diameter of the elastic rubber ring is smaller than the inner diameter of the sleeve.

2. The surgical nail holder screwdriver according to claim 1, wherein The elastic rubber ring is a silicone rubber ring.

3. The surgical nail holder screwdriver of claim 1, wherein, The sleeve is a hexagonal sleeve.

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