A multi-stage guiding and positioning electric bone drill

Abstract

The invention discloses a multi-stage guiding and positioning type electric bone drill, which comprises a bone drill shell. A driving mechanism and a transmission mechanism connected to each other are arranged inside the bone drill shell. For the positioning and clamping mechanism for centering and clamping the Kirschner wires, the rear end of the bone drill housing is perforated with a multi-stage positioning mechanism for centering the Kirschner wires with different diameters. The multi-stage positioning mechanism can realize the centering of Kirschner wires with various diameters of 0.5mm-4mm, so that the corresponding positioning and clamping mechanism does not need to be replaced frequently, reducing operation steps and being easy to use. The multi-stage guiding and positioning type electric bone drill has simple connections between various mechanisms, easy disassembly and assembly, and is convenient for all-round disinfection of the bone drill after use.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a multi-stage guiding and positioning electric bone drill. Background technique [0002] A Kirschner wire is a stainless steel needle that connects broken bones. In orthopedic surgery, Kirschner wires are commonly used as internal fixation materials for fracture fixation. As an auxiliary tool for Kirschner wires, electric bone drills are often used to drill holes in patients' bones. When the Kirschner wire is used, it is clamped by an electric bone drill and drilled into the bone through high-speed rotation. [0003] With the wide application of Kirschner wires, Kirschner wires have developed needles with various diameters ranging from 0.5mm to 4mm. During use, in order to clamp the drill chuck more tightly, it is usually necessary to replace the drill chuck according to the corresponding diameter, thereby increasing the steps in the operation process and making th...

AI Technical Summary

Problems solved by technology

During use, in order to make the drill chuck clamp more tightly, it is usually necessary to replace the drill chuck according to the corresponding diameter, which increases the steps in the operation process and makes the operation process more cumbersome

Moreover, in the prior art, the clamping process of the drill chuck is very prone to eccentricity, resulting in increased drilling resistance, enlarged drilling holes, and even breakage of the Kirschner wire in severe cases.

In addition, since the rear end of the Kirschner wire is not clamped or fixed, it is easy to shake when rotating at high speed, and it is easy to cause plastic deformation such as bending of the Kirschner wire before it works, and it also makes the drilling process unstable. Difference

Due to the complex structure of the existing electric bone drill, it is difficult to disassemble and fully disinfect, which increases the risk of infection for patients

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