Navigation device for bone block directional movement in orthognathic surgery and manufacturing method thereof

Abstract

The invention relates to a navigation device for bone block directional movement in an orthognathic surgery. The navigation device for bone block directional movement in the orthognathic surgery comprises a U-shaped occluding plate; an upper jaw left navigation plate and an upper jaw right navigation plate, a lower jaw left navigation plate and a lower jaw right navigation plate or a chin navigation plate; an upper jaw left connecting piece and an upper jaw right connecting piece, a lower jaw left connecting piece and a lower jaw right connecting piece or a chin connecting piece; at least two upper jaw fixing splints which are used for navigating upper jaw bone block movement during the surgery and fixing an upper jaw bone block which is moved in place, at least two lower jaw fixing splints which are used for navigating lower jaw bone block movement and fixing a lower jaw bone block which is moved in place, or at least one chin fixing splint which is used for navigating chin bone block movement and fixing a chin bone block which is moved in place. The components are designed through software and are manufactured by adopting a quick forming method.

Description

technical field [0001] The invention belongs to the field of auxiliary medical devices, and in particular relates to a navigation device for directional movement of bone blocks in orthognathic surgery and a manufacturing method thereof. Background technique [0002] Orthognathic surgery improves craniofacial deformities by separating the maxilla, mandible, and / or chin parts and moving them to the target position. Traditional orthognathic surgery uses an occlusal occlusal splint as a moving and positioning tool for bone fragments, but its fabrication process is complicated. Because it is difficult to ensure the stability of the mandibular condyle in the glenoid fossa during the operation, and the traditional occlusal splint is positioned according to the occlusal position of the dentition, it cannot guarantee the relative position between the bone blocks, and there is a large error in the moving position of the bone blocks. [0003] Patent CN201420093818.8 discloses "an inte...

AI Technical Summary

Problems solved by technology

Although this kind of intermediate guide plate can accurately locate the position of the maxillary bone fragment before the bone fragment is fixed, there are the following problems: after using the intermediate guide plate to locate the maxillary bone fragment and moving to the target position, the surgeon needs to select and place the retention splint by himself , so the shape of the retention splint is difficult to ensure a complete fit with the bone surface, which affects the stability of the position of the bone block; the fixation of the small positioning plate needs to drill holes in the bone surface, and the installation of the retention splint also needs to drill holes in the bone surface, so it will be difficult for the patient. Additional trauma and increased procedures

Images