Application of digitization technology to oral approach mandibular condylar lesion surgical excision

Abstract

The invention relates to application of a digitization technology to oral approach mandibular condylar lesion surgical excision. The application comprises the following steps: planting five self-tapping titanium screws into a mandible of a patient to be used as registration mark points of a navigation system in a surgery; photographing maxillofacial region CT (Computed Tomography) scanning and storing in a DICOM (Digital Imaging and Communications in Medicine) format; establishing a patient lesion three-dimension pattern; designing an osteotomy face and an osteotomy range according to a lesion boundary; introducing navigation software in an STL (Standard Template Library) format to reestablish a three-dimensional geometrical model; mounting a navigation reference frame, and registering by using a navigation positioning probe and the mark points; setting an incision and dissecting and separating a joint capsule under an endoscope view to expose a condylar process; searching an osteotomy face position by using the positioning probe and calibrating a coordinate of a bone saw; adjusting the bone saw to the position of the osteotomy face and the cutting angle; and under the guidance of the incision stretched endoscope probe and a navigation positioning image, carrying out condylar osteotomy by holding the bone saw via a surgery doctor. By the aid of the application, the surgery doctor can accurately cut off condylar tumors according to preoperative plans, so the ideals of minimally invasive surgery and accurate surgery are uniformed.

Description

technical field [0001] The invention relates to the technical field of computer-aided surgery, in particular to the application of digital technology in surgical resection of mandibular condylar process lesion through intraoral approach. Background technique [0002] In the prior art, the condyle is an important anatomical structure of the maxillofacial region, and the integrity of the shape and function of the condyle is the key to ensure the opening and closing of the mandible and the chewing movement. The condyle is composed of cortical bone and cancellous bone, and the surface is covered with cartilage components. Tumors that arise in bony structures and cartilaginous tissues, such as osteochondroma, can also occur in the condyles. Neoplastic disease of the condyles often leads to temporomandibular joint pain, joint dysfunction, and facial asymmetry and occlusal disturbances. The main treatment is surgical resection of the tumor or even the involved condyle. However, ...

AI Technical Summary

Problems solved by technology

Due to the limitation of endoscopic technology itself, only two-dimensional field of view can be provided

Although the endoscopic probe can clearly and magnify the details of the local anatomy, it cannot provide an overall stereoscopic view.

Since the surgical operation cannot be performed under direct vision, the surgeon only relies on the local field of view of the endoscope, and it is difficult to accurately determine the spatial position of the surgical operation and surgical instruments

Images