Double-end switchover screwdriver for orthopaedic operation

Abstract

The invention relates to the technical field of medical devices, in particular to a double-end switchover screwdriver for orthopaedic operation. The double-end switchover screwdriver comprises a handle, a knife bar, a locating screw and a screw fixing post, wherein a knife bar groove and a placement groove are axially formed in the handle; the knife bar is inserted into the knife bar groove and connected with the knife bar groove in a sliding manner; flat tip rod is arranged at one end of the knife bar; a crosshead rod is arranged at the other end of the knife bar; knife bar threaded grooves are radially formed in the knife bar; a threaded groove is radially formed in the handle; one end of the locating screw is located in the threaded groove and movably spliced and matched with the knifebar threaded grooves; the other end of the locating screw is polygonal; a sleeve adapted to the polygon is vertically mounted on the screw fixing post; the screw fixing post is movably spliced into the placement groove; and the end part of the screw fixing post is exposed and extends out of the placement groove. The double ends of the screwdriver can be switched over; the screwdriver is quick to mount, low in difficulty, small in floor area after storage and convenient to store and carry.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a double-head switching screwdriver for orthopedic surgery. Background technique [0002] At present, in orthopaedic clinic and orthopedic surgery, screwdriver is a common tool, which is often used for implantation and removal of orthopedic screws: fixing plates, fixing grafts or removing internal fixation, etc., are used on larger open surgical incisions However, in the prior art, orthopedic screwdrivers are generally set according to the pattern of the top opening of the implanted and removed orthopedic screws. Since they can only operate on the same type of screws, they have a single function. , does not meet the needs of doctors. [0003] For example, a multifunctional screwdriver for orthopaedics disclosed in the authorization bulletin number CN206761759U, the upper part of the handle is a cavity, the lower front end of the handle is provided with a cutter bar, the ...

AI Technical Summary

Problems solved by technology

[0005] Although the above two solutions have two different cutter heads for switching, there are the following problems: one is that the cutter head must be removed and then installed on the cutter bar in reverse, which increases the difficulty of disassembling and installing the cutter head. Due to the greater force exerted by the cutter head and the orthopedic screw during the installation and removal of the orthopedic screw, and the cutter head and the cutter bar work together, it is easy to pull the cutter head out

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