Mandible body osteotomy protection device

Abstract

The invention discloses a mandible body osteotomy protection device, one set of the device comprises a mesial osteotomy protection device and a distal osteotomy protection device which are both of irregular structures, each of the two osteotomy protection devices comprises an inner side baffle, an outer side fixing rod and a sliding screw assembly, the horizontal parts of the inner side baffle and the outer side fixing rod are located below the lower edge of the mandible, the length of the horizontal parts is slightly smaller than the thickness of a mandible body, the width of horizontal parts is equal to that of the outer side fixing rod, the inner side baffle comprises a fixing rod corresponding stress part, an osteotomy line area inwards-concave part, a plane extending part and an inner side baffle horizontal part, and the outer side fixing rod comprises an outer side fixing rod vertical part, an outer side fixing rod bone contact surface lining and an outer side fixing rod horizontal part. Through the design of the device, soft tissue on the inner side of the mandible can be effectively protected in the osteotomy process, and iatrogenic injury caused by a saw blade, a drill bit, an osteotome and other mandible osteotomy or trimming instruments is avoided.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a mandibular body osteotomy protection device. Background technique [0002] Partial mandibular defects caused by tumors, trauma, and inflammation are important clinical problems in the field of oral and maxillofacial surgery. With the maturation of microsurgery and digital surgical techniques, autologous free bone graft and vascularized autologous bone graft have become important methods for the clinical treatment of mandibular defects. Whether it is traditional mandibular reconstruction surgery or computer-assisted digital mandibular reconstruction surgery, intraoperative osteotomy is one of the most critical steps in this type of surgery, and the most involved mandibular osteotomy area in clinical practice is the mandibular body. However, due to the special anatomical shape of the mandible, the inner muscles, blood vessels, nerves and other soft tissues are easily d...

AI Technical Summary

Problems solved by technology

The use of alternative instruments not only does not meet the operating requirements, but also lacks in-place fixation measures and requires the coordination and cooperation of assistants. Therefore, during the operation, dangerous situations such as instrument position deviation and slippage often occur, which affect the operation; It is very easy to produce insufficient osteotomy depth and it is difficult to disconnect, or the osteotomy depth is too large to damage the medial soft tissue and increase surgical trauma. Therefore, it is urgent to optimize and improve the existing technology to provide a mandibular body osteotomy protection device to solve the above problems

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