Outer mandible fixing bridge

Abstract

The invention discloses an outer mandible fixing bridge which is composed of a central locking structure, a universal retention arm and a phatnoma retention foot. Retention is conducted on the residual end of the mandible at any angle through the central locking structure and the universal retention arm. The central locking structure fixes the position of the retention arm through a locking device, is controlled in a single-joint mode, is good in operability and more flexible and accordingly facilitates intra-operative operation. The universal retention arm can be applicable to fixing of the residual end of the bilateral mandible at any position and is convenient to use. The universal retention arm is also provided with a locking structure so that the retention arm can be locked at any angle to stabilize the relative position of the residual end of the mandible. Accordingly, the mandible remodeling process is simplified, and the accurate mandible remodeling effect is achieved. A phatnoma retention block can be separated from a fixing bridge body, the phatnoma retention foot is fixed to the residual end of the mandible through four holes to facilitate the intra-operative operation performed by a surgeon, and the face, in contact with the phatnoma, of the phatnoma retention block is zigzag so that the stability of the phatnoma retention block can be stabilized.

Description

technical field [0001] The invention belongs to the field of medical equipment, and more specifically relates to a mandibular external fixation bridge used in oral and maxillofacial reconstruction surgery. Background technique [0002] The following methods and instruments are currently used clinically: [0003] Intermaxillary ligation (Yildirim, S. and T. Akoz, Use of Kirschner wire invisible reconstruction: case report and review of the literature. Microsurgery, 2004.24 (1): p.3-7.): This traditional method uses the occlusal relationship of the teeth to determine the relative position of the bilateral stumps, but this method only It is limited to patients with bilateral occlusal relationship, and it is not suitable for patients with bone reconstruction with only mandibular ramus or condyle, and this method affects the normal eating of patients after surgery, which is not conducive to the protection of oral hygiene. [0004] Mandibular fixation technique: This method is su...

AI Technical Summary

Problems solved by technology

This method is highly operable, but it can cause iatrogenic damage to healthy bones and soft tissues, and it is not rigorous to use soft tissues as resistance, which is prone to mandibular displacement

[0008] CAD / CAM technology: According to the principle of mirror image, copy the mandible of the affected side according to the mandible of the healthy side, use it as a template to simulate the operation, determine the osteotomy line and shape the bone tissue template, and reconstruct the mandible during the operation after success, which can achieve a good However, the cost of making the model is relatively high, which is an important reason restricting the wide application of this technology (Toro, C., et al., Feasibility of preoperative planning using anatomical facsimile models formal and massive reconstruction. Head Face Med, 2007.3: p.5.)

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