Ultrasonic ranging and optical positioning coupled noninvasive real-time tracker

Abstract

The invention discloses an ultrasonic ranging and optical positioning coupled noninvasive real-time tracker and belongs to the technical field of medical instruments. The tracker comprises an optical positioning reference frame, an ultrasonic transducer dot matrix device, a data exchange interface and a bandage with an adjustable length, wherein the optical positioning reference frame is fixed onthe ultrasonic transducer dot matrix device through rigid connection; the ultrasonic transducer dot matrix device is fixed at a surgical site by the bandage with the adjustable length; the data exchange interface is led out from the ultrasonic transducer dot matrix device, and sends ultrasonic information acquired by the ultrasonic transducer dot matrix device to a host of a surgical navigation system in real time; the optical positioning reference frame transfers obtained optical positioning information to the host of the surgical navigation system in real time; and the noninvasive real-timetracking of bone tissues is realized by calculating coordinate transformation and position compensation by the host of the surgical navigation system. The tracker improves the accuracy and safety of surgeries, expands the using range of a surgical navigation technology in osteopathic operations, and improves the acceptability of the navigation system among medical staff and patients.

Description

technical field [0001] The invention relates to a tracker for orthopedic surgery navigation in the technical field of medical devices, in particular to a non-invasive real-time tracker coupled with ultrasonic ranging and optical positioning. Background technique [0002] The essence of image-guided orthopedic surgery navigation technology is to track the bone tissue and surgical instruments in the patient's surgical area in real time through a positioning tracker during surgery, and reflect the relative positional relationship between the two into the preoperative reconstruction model through spatial registration. Using image information to guide doctors to complete precise surgery, reduce surgical trauma, and improve surgical safety. Therefore, how to track the patient's bone tissue in real time during orthopedic surgery navigation is the primary problem that surgical navigation technology must solve. [0003] During orthopedic surgery, it may be necessary to change the sp...

AI Technical Summary

Problems solved by technology

This operation will cause additional trauma to the patient, which may lead to complications such as soft tissue infection and stress fracture; at the same time, the tracker fixed on the bone tissue must ensure that no movement or rotation occurs during the operation, otherwise it will directly affect the surgical accuracy

During the actual operation, the position between the tracker and the bone tissue will inevitably change, and the spatial registration operation often needs to be completed again, which increases the operation time and difficulty, increases the risk of the operation, and seriously affects the clinical application and promotion of navigation technology

[0004] After searching the prior art literature, it is found that there are no literature reports identical or similar to the subject of the present invention so far

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