Jaw osteotomy guide plate in-position indicating system

Abstract

The invention discloses a jaw osteotomy guide plate in-position indicating system which comprises an in-position indicating device, an osteotomy guide plate and an in-position hole. The in-position hole is formed in the osteotomy guide plate and matched with the in-position indicating device. The in-position indicating device comprises a thick column, a thin column and an outer side panel which serve as a main body, the in-position indicating device is integrally in a conical flask shape, the thick column and the thin column are directly and fixedly connected, the thin column is connected with the outer side panel, the in-position hole is integrally in a circular truncated cone shape, and the inner diameter of the hole channel is matched with the inner diameter of the thick column of the indicating device. Under the condition that the visual field is limited, whether the osteotomy guide plate is completely attached to the bone surface or not can be accurately judged, the position of the osteotomy line is visually and accurately determined, and the operation efficiency and accuracy are improved.

Description

technical field [0001] The invention belongs to the field of auxiliary medical devices, in particular to an in-position indicating system for a jaw osteotomy guide plate. Background technique [0002] Jaw bone is an important part of facial structure and function, but factors such as congenital malformation, trauma, tumor resection, and inflammatory reaction can lead to jaw bone deformity. Jaw deformity can be repaired by plastic surgery, among which jaw osteotomy is one of the most commonly used surgical methods to correct jaw deformity, such as maxillary Lefort type I osteotomy or mandibular sagittal split osteotomy for bone II , Class III dental and maxillofacial deformities, mandibular angle osteotomy for correction of mandibular angle hypertrophy, etc. The surgical approaches for jaw osteotomy mainly include extraoral, intraoral, and combined intraoral and extraoral approaches. The intraoral approach of jaw osteotomy is concealed, and there is no surgical trace left o...

AI Technical Summary

Problems solved by technology

[0004] However, the currently used clinical osteotomy guide plate lacks a positioning indicator device. When it is placed in the oral surgery area, due to the limitation of the size of the lips and the influence of local anatomy, only the fit between the upper edge of the guide plate and the bone surface can be seen in the field of vision.

However, the fit between the inner surface and the lower edge of the osteotomy guide plate and the bone surface cannot be determined, and it can only be determined by the operator's feeling and experience.

Therefore, it is impossible to ensure that the medial surface and lower edge of the osteotomy guide plate fit closely with the bone surface and the alignment is accurate during the operation.

When the lower part of the guide plate is tilted or rotated, it will lead to inaccurate osteotomy position, and even cause a series of problems such as intraoperative bleeding, accidental fracture, unsmooth osteotomy line, bilateral asymmetry, and unsatisfactory postoperative results.

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