Bone-supporting type mandibular tractor guide plate device and manufacturing method thereof

Abstract

The invention relates to a bone-supporting type mandibular tractor guide plate device and a manufacturing method thereof, which comprises a guide plate body, wherein the inner surface of the guide plate body is matched with the surface contour of the mandibular angle region of a patient, a truncated bone groove and a fixing hole are formed in the guide plate body, the shape and the position of thetruncated bone groove are formed according to the direction and the position of the truncated bone line which is determined during an operation, and the distribution of the fixing hole on the guide plate body coincides with the mounting hole of the tractor. The manufacturing method comprises the following steps of: carrying out three-dimensional model reconstruction on the mandible of the patient; carrying out three-dimensional pre-bending on the tractor model to determine the position of the truncated bone line; designing the guide plate body according to the surface contour of the mandibular ramus and the mandibular angle region of the mandible model of the patient; designing the fixing holes on the guide plate body according to the installation hole position of the pre-bending tractormodel; designing the truncated bone groove on the guide plate body according to the determined position of the truncated bone line; 3D-printing the finished product. The device is simple in structureand convenient to operate, and can improve the accuracy of determining the truncated bone line and positioning and fixing the tractor.

Description

technical field [0001] The invention belongs to the technical field of mandibular distraction osteogenesis, in particular to a bone-supported mandibular distractor guide plate device and a manufacturing method thereof. Background technique [0002] Mandibular distraction osteogenesis is a solution to various diseases such as the first and second branchial arch syndrome, mandibular retrusion, mandibular microcrosis, hemifacial shortness, and temporomandibular joint ankylosis. In the previous extraoral incision approach, the implantation method of the retractor is relatively clear. Because it is an extraoral approach, the exposure of the surgical area is relatively clear. In the past, the implantation position of the retractor was tended to be adjusted during the operation or the bone-supported method was used during the operation. Guides. [0003] In the prior art, the surgical guide plate is divided into two pieces, one is an osteotomy guide plate, and the other is a retrac...

AI Technical Summary

Problems solved by technology

The existing technology mainly has the following problems: first, the operation is complicated, and it needs to be taken and worn repeatedly to verify the position; second, the position of the osteotomy guide plate cannot be fixed during the operation, so that the scribing of the osteotomy line cannot guarantee accuracy ;Third, the position guide plate of the retractor can only locate the axial position of the retractor, and the fixed position of the retractor needs to be judged by the surgeon based on experience, which may easily cause the axial displacement of the retractor

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