Pediculus arcus vertebrae screw screwing wrench

Abstract

The invention provides a pediculus arcus vertebrae screw screwing wrench, and belongs to the technical field of a medical apparatus. The pediculus arcus vertebrae screw screwing wrench comprises a screwing assembly, a first casing pipe and a locking assembly, wherein the head end of the screwing assembly cooperates with a pediculus arcus vertebrae screw, to be used for driving the pediculus arcusvertebrae screw; a first through hole allowing a guide pin to penetrate is formed in the pediculus arcus vertebrae screw screwing wrench; and the head end of the first casing pipe is connected with the tail end of the screwing assembly through a first thread structure, and a limiting member for axially limiting the guide pin is movably arranged at the tail end; and the locking member is movably arranged on the screwing assembly, and is used for locking the screwing assembly and the first casing pipe. According to the pediculus arcus vertebrae screw screwing wrench provided by the invention, the guide pin and the pediculus arcus vertebrae screw are implanted the pediculus arcus vertebrae at the same time, the screwing time is shortened, and in the screwing process, the guide pin can well cooperate with the pediculus arcus vertebrae screw.

Description

technical field [0001] The invention belongs to the technical field of medical instruments, and more specifically relates to a pedicle screw nailing wrench. Background technique [0002] For vertebral instability after spinal trauma, spondylolisthesis, degenerative diseases and other single-segment or multi-segment fractures, spinal internal fixators are often used. There are many types of fixators on the market, but most of them are composed of unidirectional pedicle screws, universal pedicle screws, connecting rods and other corresponding components. [0003] Most of the pedicle screws are hollow screws, which need to cooperate with the guide pin during implantation. In the prior art, during the implantation process of the pedicle screw, the guide pin is first implanted through the cortex, and the guide pin is left in the pedicle. Then use a tool to insert the pedicle screw into the guide wire, and implant it into the pedicle along the guide wire. After the pedicle screw ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a pedicle screw screw wrench, which aims to solve the complicated operation of the pedicle screw implantation method in the prior art, which cannot well control the cooperation of the guide pin and the pedicle screw.

Images