Minimally invasive insertion steel wire guider capable of bending and surrounding skeleton

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a minimally invasive steel wire guider capable of bending and surrounding skeleton. The minimally invasive steel wire guider comprises a guider body and a puncture steel wire, wherein the guider body comprises a body part, a handle part and a tightening piece, the body part comprises a head part, a movable part and a sleeve which are sequentially connected in series through the tightening piece, an opening is formed in the side wall of the head part, and the movable part comprises a plurality of spherical joints with notches in the front ends; the handle part comprises a first handle and a second handle which are hinged through a rotating shaft, the end of the first handle is connected with a sleeve, and the end of the second handle extends into the sleeve to be connected with the tightening piece; and the puncture steel wire penetrates through the sleeve and the movable part and can extendout of the opening. The minimally invasive steel wire guider is safe and reasonable in structure, and cannot penetrate into soft tissues to injure nerves and blood vessels. Both the front part of theguider and the puncture steel wire can be bent and deformed, so that the guider can move forwards in a turning manner and can also move forwards in a straight or backward manner, the guider is matched with bones in size and radian shape, minimally invasive penetration is realized, and the guider cannot penetrate into soft tissues to injure nerves and blood vessels.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a minimally invasive insertable steel wire guide that can bend around bones. Background technique [0002] Large oblique fractures of long bones of the limbs (including periprosthetic fractures) or displacement and separation of the third bone fragment can be reduced and fixed by wire cerclage. The traditional method of incision and direct exposure involves wearing steel wires, causing greater damage, more bleeding, and possible damage to blood vessels and nerves. The risk of postoperative infection and bone nonunion is higher. Existing wire cutters can also guide and penetrate steel wires. However, the size and curvature of each existing wire cutter are fixed, and the front part of the wire cutter cannot change its shape at will to adapt to different sizes and radians. skeleton. Therefore, there is a defect that the size and curvature of the wire cutters do...

AI Technical Summary

Problems solved by technology

Existing wire cutters can also guide and penetrate steel wires. However, the size and curvature of each existing wire cutter are fixed, and the front part of the wire cutter cannot change its shape at will to adapt to different sizes and radians. the skeleton

Therefore, there are defects that the size and curvature of the wire cutters do not match the size and curvature of the bone during use, and it will penetrate into some soft tissues; secondly, the shape of its metal structure cannot be bent, so it cannot truly achieve minimally invasive penetration.

In addition, when using a wire saw for osteotomy, the wire saw also needs to go around the bone for a week, and it was impossible to achieve minimally invasive penetration with the wire saw in the past.

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