A laser path tracker and its application

Abstract

The invention discloses a laser path tracker. The laser path tracker comprises a hollow guide handle, the tail end of the guide handle is in a disc structure, and the center of the tail end is provided with a glass micropore convenient for laser to pass through. A mirror forming a 45-degree bevel with the center line of the guide handle is arranged in the head end of the guide handle, a reflection surface of the mirror faces the tail end, and only the center of the mirror is provided with reflecting surface. The side wall, opposite to the mirror, of the guide handle is provided with a transparent ground glass window, when laser is emitted through the glass micropore in the tail end of the guide handle, the laser is reflected by the mirror and then emitted out through the transparent ground glass window, constant emission of the laser through the transparent ground glass window is guaranteed by position adjustment of the guide handle, accordingly uniformity of a laser path and a center line of the guide handle is guaranteed, and laser path tracking is realized. The invention further provides application of the laser path tracker to puncture or screw setting navigation. The laser path tracker has the advantages of simple structure, low cost, convenience in manufacturing and quickness and accuracy in positioning.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a laser path tracker used for intraoperative laser navigation and an application thereof. Background technique [0002] In orthopedics, brain surgery, etc., the use of navigation devices for nail placement and positioning operations is a relatively advanced method at present, which can quickly and directly reach the designated position, reduce intraoperative radiation exposure, and improve the success rate of surgical operations. The general principles of navigation devices currently in use are as follows: [0003] (1) Infrared navigation: similar to the GPS navigation device, that is, the infrared receiver is used to determine the position of the receiver in the indoor space according to the indoor infrared emission probe. Registration, at the same time, it is also necessary to register the preoperative images, and the intraoperative computer will calculate, and give the correct ...

AI Technical Summary

Problems solved by technology

[0005] The above two kinds of navigation are the current mainstream, but they have the following disadvantages: (1) Infrared navigation needs to be planned accordingly when the operating room is constructed, the overall economic investment is large, and the equipment is expensive; The installation and positioning are cumbersome, time-consuming, prone to displacement and alarms, and often require secondary registration; (3) Both are compared with preoperative CT images. Although they are called "real-time", they are "false" Real-time", so its accuracy rate is generally reported at home and abroad as 80% to 86%

In the operation of spine surgery, the requirements for accuracy are very high, once deviation, it may lead to serious consequences, and the above two kinds of navigation cannot provide intraoperative real-time navigation

(4) The supporting equipment needs to be disinfected before operation; (5) The above two kinds of navigation have the problems of cumbersome preoperative preparation and cumbersome operation

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