Orthopaedics operation navigation system

Abstract

The invention relates to a medical device, in particular to an orthopedic surgery navigation system which is used in a closed intramedullary nail for fracture recovery surgery. The orthopedic surgery navigation system includes a binocular stereo vision sensing device and markers, the binocular stereo vision sensing device includes: a computer with the main frequency of not less than 1G, a locator which is arranged on a locator support, two CCD cameras which are arranged in the locator and a dual-channel signal synchronizer which is connected with an image collection card, at least three active luminous diodes which are not positioned on a same straight line are arranged on the markers, wherein, an intramedullary nail is rigidly inserted and connected on one marker, and the other marker is rigidly inserted and connected with a special surgical electric drill. The invention aims at providing the orthopedic surgery navigation system and realizing the accurate positioning of the relative position relationship of a surgical tool and the lesion part of patients, so a surgeon can accurately and successfully drill a twist-locking hole of the intramedullary nail under the guidance of a screen of the computer.

Description

technical field [0001] The invention relates to a medical device, in particular to an orthopedic surgery navigation system for fracture restoration surgery of a closed intramedullary nail. Background technique [0002] At present, in orthopedic surgery, long bone fractures account for a large proportion, and the most common treatment for long bone fractures is the closed intramedullary nail internal fixation technique. Intramedullary nailing is a better "biological" internal fixation technique. Femoral and tibial fracture surgery using locking intramedullary nail internal fixation, the effect is very good, has become the preferred method of treatment of femoral and tibial fractures at home and abroad. This technology aids the healing of broken bones by inserting intramedullary nails, reduces further damage to the fracture, increases the stability between the two ends of the fracture, and reasonably distributes the physiological stress between the fracture fragments, which i...

AI Technical Summary

Problems solved by technology

[0004] ①X-ray images are used to determine the surgical anatomical position. Since the images are static, the actual area displayed is limited. Therefore, in order to obtain the exact position of the lock hole, fluoroscopy must be frequently used, which leads to repeated suffering for surgeons and patients. X-ray radiation damage

[0005] ②When the X-ray fluoroscopy system is used to assist positioning during the operation, the doctor can only observe a single-plane view. When it is necessary to observe the position of the surgical instrument on a multi-plane view, it is necessary to repeatedly adjust the position of the C-arm for scanning and positioning, resulting in Surgery is interrupted and time consuming

[0006] ③Surgeons must use their own experience to reconstruct the position of the screw relative to the twist lock hole in their minds in terms of time and space. There is no visual real-time feedback tool to manipulate the surgical tool (electric drill) to accurately drive the screw into the twist lock in the hole

It is difficult to locate the locking hole of the intramedullary nail, and it is difficult to lock it accurately, which will prolong the operation time and affect the fixation effect. These problems have already attracted the attention of many experts and professors in the world, and joint replacement, tooth replacement, facial correction, etc. have been carried out successively. Surgical navigation research, but no research has been conducted on femur and tibial fractures, especially in my country, only some theoretical discussions have been made on the principles of such systems, and no in-depth research on practical applications has been carried out.

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