Facial autologous fat transplantation operation navigation system and virtual scale prompting method

Abstract

The invention provides a facial autologous fat transplantation operation navigation system and a virtual scale prompting method. The system comprises a dental cast registration block, a dental cast connecting sleeve, a dental cast registration marking plate, a surgical instrument registration marking plate and an identification map, and can further comprise an intelligent terminal. The system is based on an augmented reality technology, a personalized noninvasive registration tooth socket is utilized, virtual information, namely skin, blood vessels, bones and preoperative planning, and real information, namely a patient entity are fused and superposed, a marking nail does not need to be manually implanted before an operation, and through personalized dental cast noninvasive registration, additional trauma brought to a patient by invasive implantation is avoided; and a three-dimensional model of the patient and preoperative operation planning are fused with patient entity information during the operation, surgical instruments are tracked in real time, and a pose and a needle inserting distance of an injector in a needle inserting process are reminded in real time, so that a doctor can complete the operation more accurately.

Description

technical field [0001] The invention relates to the technical field of medical image processing and application, in particular to an augmented reality-based navigation system for facial autologous fat transplantation and a virtual scale prompting method. Background technique [0002] For facial autologous fat transplantation, due to skin occlusion, surgeons cannot observe the distribution of many blood vessels on the face of the human body. Therefore, it is impossible to accurately judge the end position of the syringe injection. Fat particles are injected into the blood vessels, and once the fat particles enter the blood vessels, it will lead to complications such as blindness, cerebral infarction, skin necrosis and even death. In addition, this technique relies heavily on the operator to grasp the amount of fat grafting through visual observation, which consumes a lot of time and energy, and the treatment effect is also uncertain. [0003] With the development of augmente...

AI Technical Summary

Problems solved by technology

However, when the traditional augmented reality surgical navigation technology is used for 3D registration, the manual implantation of marker nails is required before the operation, which not only increases the operation time, but also brings additional trauma to the patient due to the invasive implantation.

In addition, this method only superimposes the preoperative planning on the patient entity in a visual way. For doctors who do not have real-time reminders of the position and posture of the syringe and the needle insertion distance during the needle insertion process, large errors are likely to occur, resulting in preoperative planning. Difficult to implement accurately

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