Orthopedic surgery site tracker fixing device

Abstract

The invention relates to the technical field of medical instruments, in particular to an orthopedic surgery site tracker fixing device which comprises a fixing device main body, a fixing device auxiliary body outer frame, a fixing device rotating steel ball, a fixing device connecting rod, an auxiliary body knob and a main body knob. Through linkage of the main body knob, the main body locking bolt and the fixing device clamping module, clamping of double spicules is achieved, and operation is easy and convenient; through linkage of an auxiliary body knob, an auxiliary body locking bolt, an auxiliary body inclined wedge block and an auxiliary body bowl-shaped wedge block, clamping of a rotating steel ball of a fixing device is achieved, meanwhile, extrusion force and friction force are generated, the tracker is firmly fixed to the expected position, a hidden limiting pin exists in the tracker, it can be guaranteed that the locking bolt does not fall off, and the integrity of the tracker is guaranteed. In addition, due to the fact that movement paths of related movable parts are preset, for example, related parts of the bone needle clamping structure can only move linearly, and a ball head of the steel ball pressing structure can only rotate, operation of medical staff is more direct and simpler, and operation time is saved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a fixation device for an orthopedic operation site tracker. Background technique [0002] In the existing orthopedic surgery assisted by surgical robots, a tracker composed of luminous or reflective markers arranged in a certain arrangement is an important positioning device and is an important part of orthopedic surgery. In order to achieve accurate positioning of the surgical site, the tracker needs to be fixed. [0003] At present, there are mainly several kinds of fixation methods commonly used. The first one is to drive the bone needle into the bone, clamp the bone needle with two pieces of metal, and lock the metal with screws. One end of the metal has a threaded hole for Installing a tracker, although this method is simple and practical, does not limit the direction of the two locking metals, and requires the operator to be more patient. At the same time, the acqu...

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly several fixation methods commonly used. The first one is to drive the bone needle into the bone, clamp the bone needle with two pieces of metal, and lock the metal with screws. One end of the metal has a threaded hole for Installing a tracker, although this method is simple and practical, does not limit the direction of the two locking metals, and requires the operator to be more patient. At the same time, the acquisition direction of the array is not comprehensive enough, which limits the operation space and increases the difficulty of the operation; the second method The method is to improve the clamping of the bone needle, and use it as a whole module, leaving two pin holes and a locking bolt, and the relative movement between the two locking metals can only be along one direction, and the other array connection On the one hand, some connecting rod structures are used, and only certain directions are taken, but if the operator loosens too much in this way, the whole structure will fall apart, which increases the risk; the third way is to use three bone needles, using triangular Stabilization to increase the stability of the immobilization device, but increases trauma

Therefore, the existing tracker fixation device cannot meet the needs of orthopedic surgery

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