Magnetism guided reduction and fixation device for orthopedic surgery

Abstract

The invention discloses a magnetism guided reduction and fixation device for orthopedic surgery. The device comprises a reduction tong body and a guide structure, wherein the guide structure comprises guide apparatus and a magnetic metal ball I; the guide apparatus comprises a guide ball, spherical fixing shells, a positioning pin, a locking bolt and a guide pipe, and the guide ball can freely rotate relative to the central axes of the spherical fixing shells at very low friction force; the positioning pin and the locking bolt can position and lock the guide ball. By means of the technical scheme, a screw can be accurately implanted in orthopedic surgery of some parts in a minimally invasive manner, and repeated, tentative and temporary fixation and excessive X ray irradiation to a patient are avoided; the guide structure in the technical scheme has the advantages of being accurate in guide and simple, convenient and stable to position.

Description

technical field [0001] The invention relates to a navigation device with reset function in orthopedic surgery, in particular to a magnetically guided resetting and fixing device for orthopedic surgery. Background technique [0002] With the continuous improvement of people's living standards, patients have increasingly strong requirements for accurate reduction and firm fixation of fractures in orthopedic surgery while reducing surgical trauma. The research and understanding of the factors affecting bone union continue to deepen, and the number of patients with nonunion of fractures is increasing clinically. Minimally invasive surgery in orthopedic surgery has become an inevitable development trend. However, in minimally invasive surgery, some parts of the surgery require Precisely insert the screw into a certain position in the bone to achieve effective fixation and avoid important structures such as articular surfaces, neurovascular, etc. Some types of fractures require th...

AI Technical Summary

Problems solved by technology

[0002] With the continuous improvement of people's living standards, patients have increasingly strong requirements for accurate reduction and firm fixation of fractures in orthopedic surgery while reducing surgical trauma. The research and understanding of the factors affecting bone union continue to deepen, and the number of patients with nonunion of fractures is increasing clinically. Minimally invasive surgery in orthopedic surgery has become an inevitable development trend. However, in minimally invasive surgery, some parts of the surgery require Precisely insert the screw into a certain position in the bone to achieve effective fixation and avoid important structures such as articular surfaces, neurovascular, etc. Some types of fractures require the head of the screw to be placed accurately at one time There is currently no portable orthopedic device that can meet the above requirements at the place where the fracture reduction is maintained on the opposite side of the surgical field of view. In order to meet the above requirements, the traditional surgical method often needs to fully expand the surgical field of view, which increases the surgical trauma. Although invasive surgery can meet the above requirements with the help of X-ray fluoroscopy, it often requires repeated temporary fixation and fluoroscopy, which increases the risk of surgical failure and trauma to the patient, prolongs the operation time, and X-ray radiation is harmful to patients and patients. The physical health of surgeons has been affected. Although some computer 3D navigation equipment can avoid the above problems and place screws quickly and accurately, the computer 3D navigation equipment is not widely used in some lower-level hospitals and economically underdeveloped hospitals due to its high price. Areas that are difficult to popularize

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