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Self-tightening bone drill head

A self-tightening, bone drill technology, applied in the field of medical devices, can solve the problems of complex installation process, damage or slippage, no self-tightening function, etc., and achieves compact overall structure, simple and convenient use, and good clamping reliability. Effect

Active Publication Date: 2017-08-08
CHONGQING XISHAN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many types of existing bone drill chuck mechanisms. In order to ensure the stability of the clamping, the key locking mechanism is generally used. The installation process is complicated, and it does not have the self-tightening function. It is easy to cause damage when encountering a large torque during use. or skidding

Method used

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  • Self-tightening bone drill head
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  • Self-tightening bone drill head

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Effect test

Embodiment Construction

[0026] figure 1 It is a structural schematic diagram of the present invention, figure 2 It is a schematic diagram of the structure of the active end face cam sleeve, image 3 It is a schematic diagram of the structure of the cam sleeve on the driven end face, Figure 4 is a schematic diagram of the jaw structure, Figure 5 It is a schematic diagram of the structure of the transmission sleeve of the jaw group, Image 6 is the schematic diagram of the input drive sleeve structure, Figure 7 Schematic diagram of the structure of the inner guide sleeve, Figure 8 It is a schematic diagram of the axial side of the input transmission sleeve, as shown in the figure: the self-tightening bone drill head of this embodiment includes a chuck assembly, and the chuck assembly includes a jaw set and a jaw guide sleeve, and the jaw set and the jaw guide sleeve make the jaw set clamp or release the drill bit through axial relative movement, and also include an end face cam pair, the end ...

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Abstract

The invention discloses a self-tightening type bone drilling machine head. The self-tightening type bone drilling machine head comprises a chuck component and an end cam pair. The chunk component comprises a clamping jaw group and a guide sleeve for the clamping jaw. The clamping jaw group clamps or releases drills through the axial relative movement of the clamping jaw group and the guide sleeve for the clamping jaw. The end cam pair comprises a power input end and a power output end. The power input end receives driving power, and the power output end outputs the power to the clamping jaw group. The self-tightening type bone drilling machine head is a structure to realize tightening on the clamping jaw component through the axial movement of the guide sleeve for the clamping jaw and a structure with conical surface, drill locking through a key is not needed, and the use is convenient and simple. The end cam pair is utilized to drive the transmission, in the using process after a drill is clamped, the clamp force of the chunk on the drill is increased along with the increase of a torque, the self-tightening function is achieved, the reliability of clamping is good, the massive structure is compact, and improving of the work efficiency is improved.

Description

technical field [0001] The invention relates to a medical device, in particular to a drill chuck device with self-tightening function in surgical operation. Background technique [0002] Orthopedic drill is a relatively common surgical method in orthopedics. It is completed by orthopedic drill equipment (handle); when in use, it is clamped by a chuck and driven by a power handle to achieve high-speed rotation for drilling. [0003] There are many types of existing bone drill chuck mechanisms. In order to ensure the stability of the clamping, the key locking mechanism is generally used. The installation process is complicated, and it does not have the self-tightening function. It is easy to cause damage when encountering a large torque during use. or skidding. [0004] Therefore, it is necessary to improve the existing orthopedic drill chuck assembly without using a key to lock the drill bit. During the use of the clamped drill bit, as the torque increases, the clamping forc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/16
CPCA61B17/1604A61B17/1615A61B17/162A61B17/1624A61B2017/564
Inventor 郭毅军赵正王宴斌张金彬
Owner CHONGQING XISHAN SCI & TECH
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