High-stability ultra-sharp bone file

Abstract

The utility model discloses a high-stability ultra-sharp bone file, which belongs to the field of medical instruments and comprises a bone file body and a handle connecting part, chip removal grooves are arranged on the surface of the bone file body in a staggered manner, tooth tips formed by staggered tracks of the chip removal grooves are cutting edges, and bevel edges on two sides of each cutting edge are cutting edges; the handle connecting part is arranged at the upper end of the bone file body, the handle connecting part is provided with two end faces, one end face is a parallel end face, the other end face is an inclined end face, an end face clamping groove is formed in the parallel end face, and a protruding cylindrical clamping piece is arranged on the inclined end face. According to the bone file, the cutting edge is sharp enough, the chip containing capacity is improved, accumulated chips can be conveniently taken out from a medullary cavity when the tool is pulled out, the medullary cavity can be conveniently cleaned, the bone file is used more smoothly, the annular groove reminds an operator of the driving depth in the process of using the bone file, and the accuracy of an operation is improved.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a highly stable and ultra-sharp bone rasp. Background Art

[0002] Bone rasps are commonly used medical knives in orthopedic surgery. The existing bone rasps on the market generally have the following problems: 1. In some operations, orthopedic surgeons have to swing a hammer and hit hard to complete joint replacement surgery, which greatly consumes the physical strength of orthopedic surgeons, which is a disadvantage; 2. When some patients have osteoporosis, facing the strong hitting of the hammer, the potential surgical risk increases. To solve this problem, ultra-sharp bone rasps came into being. It greatly increases the sharpness of the bone rasps to reduce friction, thereby saving doctors' physical strength and reducing potential surgical risks. Utility Model Content

[0003] The utility model aims to provide a highly stable and ultra-sharp bone rasp to solve the above problems, increase the sharpness of the bone rasp to reduce friction, save the doctor's physical strength, and reduce the potential risks of surgery.

[0004] Technical solution: The utility model provides a highly stable and ultra-sharp bone rasp, comprising: a bone rasp body and a handle connecting part, the surface of the bone rasp body is staggered with cutting grooves, the tooth tips formed by the staggered trajectories of the cutting grooves are cutting edges, and the bevels on both sides of the cutting edges are cutting edges; the handle connecting part is arranged at the upper end of the bone rasp body, the handle connecting part has two end faces, one of the end faces is a parallel end face, and the other is an inclined end face, the parallel end face is provided with an end face clamping groove, and the inclined end face is provided with a raised cylindrical clamping piece.

[0005] Furthermore, in the above-mentioned highly stable and ultra-sharp bone rasp, the cutting grooves are arranged crosswise at 90 degrees in an X shape.

[0006] Furthermore, in the above-mentioned highly stable ultra-sharp bone rasp, the edge clearance angle of the cutting edge of the chip removal groove is set to 70°. The chip capacity in the groove is increased, and when the tool is pulled out, the accumulated chips are taken out of the medullary cavity, which is convenient for cleaning the medullary cavity. The sharpness of the cutting edge is increased, and the tool will not get stuck during use, and the accumulated chips can be discharged more smoothly, making the bone rasp smoother to use.

[0007] Furthermore, in the above-mentioned highly stable and ultra-sharp bone rasp, two parallel annular grooves are symmetrically arranged near the handle connection portion at the upper end of the bone rasp body, so that the annular grooves can remind the operator of the insertion depth during the use of the bone rasp, thereby improving the accuracy of the operation.

[0008] Furthermore, in the above-mentioned highly stable and ultra-sharp bone rasp, the surface of the bone rasp body is covered with a titanium nitride coating to increase the surface hardness and prevent wear.

[0009] Furthermore, in the above-mentioned highly stable and ultra-sharp bone rasp, the cylindrical clamping piece is provided with a cylindrical clamping groove on the outer side, and the end face clamping groove is provided with a locking thread, so as to achieve precise positioning when the bone rasp cooperates with the clamping handle, and improve the connection stability by locking with screws.

[0010] It can be seen from the above technical scheme that the utility model has the following beneficial effects: the high-stability and ultra-sharp bone rasp described in the utility model has an X-shaped track chip discharge groove to ensure that the cutting edge is small enough and the cutting edge is sharp enough. The peripheral edge back angle of the cutting edge is set to 70°, which increases the chip capacity in the groove and facilitates the removal of accumulated chips from the medullary cavity when the tool is pulled out, thereby facilitating the cleaning of the medullary cavity and improving the sharpness of the cutting edge. The bone rasp will not get stuck during use and can be discharged more smoothly, making the bone rasp smoother to use. The annular groove is set to remind the operator of the insertion depth during the use of the bone rasp, thereby improving the accuracy of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of a highly stable and ultra-sharp bone rasp of the utility model;

[0012] Figure 2 This is a schematic diagram of the handle connection portion of the utility model;

[0013] Figure 3 It is a schematic diagram of the cutting groove of the utility model.

[0014] In the figure: a bone rasp body 1 , a handle connecting portion 2 , a cutting groove 11 , a cutting edge 12 , a cutting edge 13 , an annular groove 14 , an end face groove 21 , a cylindrical clamping piece 22 , and a cylindrical groove 221 . DETAILED DESCRIPTION

[0015] Example 1

[0016] like Figure 1-3 A highly stable and ultra-sharp bone rasp is shown, comprising: a bone rasp body 1, a handle connecting part 2, wherein the surface of the bone rasp body 1 is staggeredly provided with cutting grooves 11, the tooth tips formed by the staggered tracks of the cutting grooves 11 are cutting edges 12, and the bevels on both sides of the cutting edges 12 are cutting edges 13; the handle connecting part 2 is arranged at the upper end of the bone rasp body 1, and the handle connecting part 2 has two end faces, one of which is a parallel end face and the other is an inclined end face, the parallel end face is provided with an end face clamping groove 21, and the inclined end face is provided with a protruding cylindrical clamping part 22.

[0017] like Figure 3 The high-stability ultra-sharp bone rasp shown in the figure has the cutting grooves 11 arranged in an X-shape at 90°, and the edge clearance angle of the cutting edge 13 of the cutting groove 11 is set to 70°. The sharpness of the cutting edge 13 is improved, the friction between the bone rasp and the bone inside the medullary cavity is reduced, and the doctor can save more physical effort.

[0018] Example 2

[0019] On the basis of Example 1, in this example, Figure 1 The high-stability ultra-sharp bone rasp shown in the figure has two symmetrically arranged parallel annular grooves 14 at the upper end of the bone rasp body 1 near the handle connecting portion 2, which are used to remind the orthopedic surgeon the depth of the bone rasp being driven into the medullary cavity.

[0020] like Figure 2 In the highly stable and ultra-sharp bone rasp shown, a cylindrical clamping member 22 is provided with a cylindrical clamping groove 221 on the outer side thereof, so as to realize accurate positioning of the bone rasp when it cooperates with the clamping handle.

[0021] In this embodiment, a locking thread is provided in the end face slot 21. The connection stability is improved by screw locking.

[0022] In this embodiment, the surface of the bone rasp body 1 is covered with a titanium nitride coating to increase the surface hardness.

[0023] It should be noted that the above is only a technical solution of the utility model and is not a limitation. Although the utility model is described in detail with reference to the preferred embodiments, a person skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A highly stable and ultra-sharp bone rasp, characterized in that: include: A bone rasp body (1), wherein the surface of the bone rasp body (1) is staggeredly provided with cutting grooves (11), the tooth tips formed by the staggered tracks of the cutting grooves (11) are cutting edges (12), and the bevels on both sides of the cutting edges (12) are cutting edges (13); A handle connecting part (2) is provided on the upper end of the bone rasp body (1), the handle connecting part (2) has two end faces, one of which is a parallel end face and the other is an inclined end face, the parallel end face is provided with an end face clamping groove (21), and the inclined end face is provided with a protruding cylindrical clamping piece (22).

2. A highly stable and ultra-sharp bone rasp according to claim 1, characterized in that: The chip removal grooves (11) are arranged crosswise at 90 degrees in an X shape.

3. The highly stable and ultra-sharp bone rasp according to claim 1, characterized in that: The peripheral edge clearance angle of the cutting edge (13) of the chip removal groove (11) is set to 70°.

4. The highly stable and ultra-sharp bone rasp according to claim 1, characterized in that: Two parallel annular grooves (14) are symmetrically arranged at the upper end of the bone rasp body (1) near the handle connecting portion (2).

5. The highly stable and ultra-sharp bone rasp according to claim 1, characterized in that: The surface of the bone rasp body (1) is covered with a titanium nitride coating.

6. The highly stable and ultra-sharp bone rasp according to claim 1, characterized in that: A cylindrical clamping groove (221) is provided on the outer side of the cylindrical clamping member (22).

7. The highly stable and ultra-sharp bone rasp according to claim 1, characterized in that: A locking thread is provided in the end face slot (21).

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