Drill bit dismounting handle

Abstract

The utility model belongs to a pullout auxiliary device of a reaming tool in the field of medical instruments, and particularly relates to a drill bit dismounting handle which comprises a handle body, the handle body is provided with an opening groove penetrating through the handle body in the length direction, and one end face of the handle body is provided with a limiting cavity along the opening groove. And a limiting step is formed at the bottom of the limiting cavity. According to the detachable handle, the drill bit and the driving shaft can be easily separated, so that the operation time of a doctor is greatly saved; and drill bits with different sizes can be detached.

Description

Technical Field

[0001] The utility model belongs to an extraction auxiliary device for a reaming tool in the field of medical devices, and particularly relates to a drill bit disassembly handle. Background Art

[0002] In a reaming - perfusion - aspiration operation, a detachable drill bit (as shown in Figure 1 ) is needed to ream the medullary cavity hole. During this operation, to reduce the damage to the medullary cavity, the reaming hole cannot be completed at one time, and the medullary hole needs to be slowly enlarged to the required size, which requires frequent replacement of drill bits of different sizes. Or after the reaming hole is completed, the drill bit needs to be removed from the drive shaft.

[0003] In order to easily remove the drill bit, a tool dedicated to separating the detachable drill bit needs to be developed. Summary of the Invention

[0004] The utility model provides a drill bit disassembly handle, which can easily remove the drill bit and greatly saves the operation time in surgical operations.

[0005] The technical solution provided by the utility model is as follows:

[0006] A drill bit disassembly handle, comprising:

[0007] A handle body, the handle body is provided with an opening groove penetrating through the handle body along the length direction, one end face of the handle body is provided with a limiting cavity along the opening groove, and a limiting step is formed at the bottom of the limiting cavity.

[0008] Preferably, the cross - sectional shape of the opening groove is a U - shaped groove.

[0009] Preferably, the outer shape of the handle body conforms to the ergonomic design.

[0010] Preferably, the shape of the limiting cavity is circular.

[0011] Preferably, the limiting step is a conical surface, and the radius of the conical surface gradually decreases from the end face of the handle body with the limiting cavity to the other end face of the handle body.

[0012] Preferably, the limiting step is a plane.

[0013] Preferably, the material of the handle body is POM or aluminum alloy or external silicone and internal aluminum alloy.

[0014] The beneficial effect of the disassembly handle of the utility model: In a reaming - perfusion - aspiration operation, the disassembly handle can easily separate the drill bit from the drive shaft, greatly saving the operation time of doctors. At the same time, the disassembly handle can also meet the disassembly of drill bits with different diameters and has a certain universality. Description of the Drawings

[0015] Figure 1 is a schematic diagram of a detachable drill bit of the prior art;

[0016] Figure 2 is a schematic structural diagram of the disassembly handle of the present utility model;

[0017] Figure 3 is the front view of the disassembly handle of the present utility model;

[0018] Figure 4 is Figure 3 the top view of;

[0019] Figure 5 is the usage state diagram of the disassembly handle of the present utility model;

[0020] In the figure, 1 is the drill bit, 11 is the drill bit tip, 12 is the shank, 2 is the handle body, 21 is the opening groove, 22 is the limiting cavity, 23 is the limiting step, and 3 is the drive shaft. Detailed Description of the Preferred Embodiments

[0021] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the disassembly handle of the present utility model will be further described in detail below through embodiments and in conjunction with the drawings. It should be understood that the specific embodiments described herein are only illustrative embodiments and are not used to limit the present utility model.

[0022] As Figure 1 shown, the detachable drill bit 1 includes a drill bit tip 11 and a shank 12, and the shank 12 is connected to the drive shaft 3.

[0023] As Figures 2 - 4 shown, the drill bit disassembly handle of the present utility model is mainly composed of a handle body 1, and its material is POM or aluminum alloy or external silicone with internal aluminum alloy. The handle body 1 is provided with a through opening groove 21 along its length direction. The opening groove 21 is used to accommodate the shank 12 of the drill bit 1, and the cross-sectional shape of the opening groove 21 is preferably a U-shaped groove. A limiting cavity 22 is provided along the opening groove 21 on one end face of the handle body 1, and the bottom of the limiting cavity 22 forms a limiting step 23. The limiting cavity 22 is used to accommodate the drill bit tip 11. In order to meet the disassembly of drill bits with different diameters, the size of the limiting cavity 22 is designed to the limit value to ensure that drill bit tips 11 with different diameters can be embedded and accommodated in the limiting cavity 22. For the ease of manufacturing the disassembly handle, generally the shape of the limiting cavity 22 is circular. The function of the limiting step 23 is to provide a support point during the disassembly process to help the doctor separate the drill bit and the drive shaft 3 more efficiently when applying force.

[0024] To enable doctors to hold the disassembly handle comfortably when applying a pulling force and reduce hand fatigue, the outer shape of the handle body 1 is designed ergonomically.

[0025] In some specific embodiments, the limiting step 23 is a plane or a conical surface, preferably a conical surface. As Figure 3 shown, the limiting step 23 is a conical surface, and the radius gradually decreases from one end surface of the handle body 2 with the limiting cavity 22 to the other end surface of the handle body 2. The conical surface limiting step 23 is easier to machine and is also beneficial for the drill bit tip 11 to make full use of the space of the limiting cavity 22.

[0026] As Figure 5 shown, when using the disassembly handle of the present invention, first place the shank 12 of the drill bit 1 into the opening groove 21, and the drill bit tip 11 is embedded in the limiting cavity 22 and supported by the limiting step 23. Then, the doctor holds the disassembly handle firmly and can easily separate the drill bit 1 from the drive shaft 3 by pulling the drive shaft 3. The whole disassembly process is simple and fast, greatly saving the operation time.

[0027] In conclusion, the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A drill bit removal handle, characterized in that, Including: A handle body, an opening groove running through the handle body along its length direction is provided on the handle body, a limiting cavity is provided along the opening groove on one end face of the handle body, and a limiting step is formed at the bottom of the limiting cavity.

2. The detachable handle according to claim 1, wherein The cross-sectional shape of the opening groove is a U-shaped groove.

3. The detachable handle according to claim 1, wherein, The outer shape of the handle body conforms to the ergonomic design.

4. The detachable handle according to claim 1, wherein The shape of the limiting cavity is circular.

5. The detachable handle according to claim 1, wherein The limiting step is a conical surface, and the radius of the conical surface gradually decreases along the direction from the end face of the handle body with the limiting cavity to the other end face of the handle body.

6. The detachable handle according to claim 1, wherein, The limiting step is a plane.

7. The detachable handle according to claim 1, wherein The material of the handle body is POM or aluminum alloy or external silicone with internal aluminum alloy.

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