Intraoperative navigation method and system for assisting in surgery

Abstract

The invention discloses an intraoperative navigation method and system for assisting in surgery. The method comprises the steps of preoperative scanning, establishment of a three-dimensional model, fixation of a first coordinate system reference mark and a second coordinate system reference mark, scanning through a structured light scanner, rough registration, refined registration and completion of the navigation process through a controller and a displayer. Due to the rough registration process, the process of refined registration between a three-dimensional image and a pre-registered region is very short, and registration preparation time before start of surgical navigation can be greatly shortened. Moreover, since two three-dimensional spaces are utilized for refined registration, the probability of errors is extremely low, and the accuracy and reliability of registration between a sick body and the three-dimensional model can be improved apparently; accordingly, the quality of the surgery is improved, and the success rate of the surgery is increased.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to an intraoperative navigation method for assisting surgical operations. In addition, the invention also relates to an intraoperative navigation system. Background technique [0002] Among common surgical operations, orthopedic operations such as spine and joints and brain surgery are difficult and have a high failure rate due to high precision requirements, complex operations, and serious postoperative complications. Epidemiological data show that at least 1 million to 1.5 million osteoarthritis patients, 1.5 million to 2 million spinal disease patients, and 300,000 to 400,000 brain surgery patients need surgical treatment every year in China. The navigation system provides doctors with visual information during the operation, and performs instrument navigation and monitoring, which can greatly improve the success rate of the operation. In the process of navigating the operati...

AI Technical Summary

Problems solved by technology

In clinical operations, doctors generally report that when using this navigation system for multi-point registration, the registration accuracy is not ideal due to the influence of operational errors and multi-point registration methods, and the amount of information in multi-point registration data is very limited. Not only is there the possibility of misjudgment by the navigation system, resulting in a complete failure of the operation, but also the high failure rate of the navigation system for multi-point registration verification. Doctors often need to perform manual multi-point registration repeatedly, which prolongs the operation time and increases the risk of surgery.

Images