Mandible external fixation device with navigation

Abstract

The invention provides a mandible external fixation device with navigation. The mandible external fixation device with navigation includes a mandible external fixation bridge and a navigation reference frame; and the mandible external fixation bridge includes a central locking mechanism, position fixing arms at two sides and alveolar position fixing legs at two sides, and a connection device connected with the navigation reference frame is arranged on the central locking mechanism. The mandible external fixation device with navigation has the advantages that the mandible external fixation bridge and the navigation reference frame are combined, and the reference frame is located at the middle of a mandible so that registration positioning accuracy of the mandible during mandible remodelingcan be significantly improved. An original position of the mandible is fixed and recorded, meanwhile, the mandible is registered and positioned noninvasively and directly, therefore, a mandible remodeling operation process is simplified, and the accuracy of mandible remodeling is improved.

Description

technical field [0001] The invention relates to the technical field of surgical instruments, in particular to a mandibular external fixation device with navigation used in oral and maxillofacial reconstruction surgery. Background technique [0002] Chinese patent CN105342702B discloses a personalized mandibular fixation guide plate based on 3D printing, which is equipped with a fixation rod, vertical wings and parallel wings. The fixed part on the outer side of the remaining mandible is completely fitted, the fixed rod end is fixedly connected to the outer side of the vertical wing, the vertical wing and the parallel wing are connected at an angle, and the vertical wing extends outward in the direction of the fixed rod end. This device is a 3D The printed personalized fixed guide plate can overcome the problem of inaccurate positioning in the current mandibular reconstruction to a certain extent, but the personalized 3D printing design cycle is long, requires additional cost...

AI Technical Summary

Problems solved by technology

[0002] Chinese patent CN105342702B discloses a personalized mandibular fixation guide plate based on 3D printing, which is equipped with a fixation rod, vertical wings and parallel wings. The fixed part on the outer side of the remaining mandible is completely fitted, the fixed rod end is fixedly connected to the outer side of the vertical wing, the vertical wing and the parallel wing are connected at an angle, and the vertical wing extends outward in the direction of the fixed rod end. This device is a 3D The printed personalized fixed guide plate can overcome the problem of inaccurate positioning in the current mandibular reconstruction to a certain extent, but the personalized 3D printing design cycle is long, requires additional costs for patients, and cannot be organically integrated with existing navigation technologies. Clinical application limited

However, the mandibular external fixation bridge does not have a navigation device. During the operation, the navigation reference frame needs to be placed on the skull, and the positions of the maxilla and mandible are relatively fixed by intermaxillary ligation, so as to register the position of the mandible.

This method indirectly determines the position of the mandible through the position of the skull, and its accuracy is greatly reduced. At the same time, there will be micro-movement in the intermaxillary ligation, which will also affect the registration accuracy of the mandible.

In addition, placing a reference frame on the skull to register the position of the mandible would cause additional trauma to the patient, limiting the utility of this method

In clinical practice, the reference frame is directly fixed on the mandible, and the position of the mandible is directly registered. This method avoids the additional trauma of the patient’s skull registration, but it is only suitable for patients with complete mandible continuity, and cannot be used in jaw reconstruction surgery. application

[0004] There are currently no reports on the placement of navigation devices on mandibular external fixation bridges

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