Intraoperative real-time navigation method assisting removal of foreign body in mandibular area

Abstract

The present invention relates to the field of computer-aided surgery technology and craniomaxillofacial repair and reconstruction surgery medical equipment, in particular to an intraoperative real-time navigation operation method for assisting removal of foreign bodies in the mandibular region, which is characterized by the following steps: preoperatively modulating dental self-curing gum to make mouth opening Fix the guide plate, and then wear the guide plate in the mouth to perform thin-slice spiral CT scanning of the patient’s maxillofacial area, import the CT data into the navigation software i‑plan for preoperative planning, accurately mark the position of foreign bodies and set the approach of clamping instruments; , wearing a mouth opening guide plate for maxillofacial surgery area surface registration and clamping instrument registration, and the navigation operation can be performed after the accuracy is verified to be qualified. After exposing the operation area, follow the planned path and trajectory, observe and adjust the path of the instrument tip in real time on the navigation display, and remove the foreign body. The invention realizes the navigation surgery technique in the movable area of ​​the mandible, the method is convenient, the additional cost is low, easy to learn and use, and the curative effect is stable.

Description

technical field [0001] The invention relates to the field of intraoperative navigation systems, in particular to an intraoperative real-time navigation system and method for assisting removal of foreign bodies in the mandibular area. Background technique [0002] Foreign body retention after maxillofacial and neck trauma is very common. For superficial foreign bodies, its removal is relatively easy, but if the foreign body remains deep or is located near important anatomical structures, such as the infratemporal fossa / cervical neurovascular bundle, it is extremely difficult and risky to remove. For the determination of the location of foreign bodies in the human body, we can use imaging methods such as B-ultrasound, plain X-ray film, panoramic film, CBCT, CT, and MRI. During surgery, doctors can also use real-time surgical navigation. [0003] The surgical navigation system is the product of the combination of modern imaging technology, stereotaxic technology, computer tec...

AI Technical Summary

Problems solved by technology

But its disadvantages are obvious: 1. The bracket is fixed on the mandible, which increases the trauma of the non-operative area; 2. The bracket is fixed on the teeth, and it is difficult to obtain repeated fixed positions and stable retention; 3. If the bracket is fixed in the mouth, It must affect the surgical field of view and interfere with the surgical operation; 4. The use of brackets and retaining screws increases the cost of consumables

So far, there is still a lack of an economical and convenient method to realize real-time surgical navigation of the movable area of ​​the mandible at home and abroad.

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