Individual craniofacial bone piece auxiliary positioning guide plate system and preparation method thereof

Abstract

The invention discloses an individual craniofacial bone piece auxiliary positioning guide plate system and a preparation method thereof. The system comprises a pre-osteotomy guide plate device and a post-osteotomy guide plate device, wherein the pre-osteotomy guide plate device is formed by fixedly connecting a set of reference guide plates and fixed guide plates by pre-osteotomy connecting rods,and the post-osteotomy guide plate device is formed by fixedly connecting another set of reference guide plates and fixed guide plates by post-osteotomy connecting rods. The preparation method comprises the following steps of: firstly, acquiring a three-dimensional model of the preoperative craniofacial bone tissue by three-dimensional reconstruction software; secondly, designing solid models of the pre-osteotomy connecting rods for connecting the reference guide plates and fixed guide plates, wherein the reference guide plates, the fixed guide plates and the solid models of the pre-osteotomyconnecting rods form a solid model of the pre-osteotomy guide plate device; thirdly, designing solid models of post-osteotomy connecting rods for connecting the reference guide plates and fixed guideplates, wherein the reference guide plates, the fixed guide plates and the solid models of the post-osteotomy connecting rods form a solid model of the post-osteotomy guide plate device; and finally,processing the pre-osteotomy guide plate device and the post-osteotomy guide plate device according to the solid models.

Description

technical field [0001] The invention relates to an auxiliary medical device, in particular to an individualized craniofacial bone auxiliary positioning guide plate system and a preparation method thereof. Background technique [0002] For patients with bilateral asymmetry or deformity of the craniofacial bone structure caused by old trauma or congenital development, surgical operations are often required to improve the asymmetry or deformity of the craniofacial bone structure, that is, clinically, old Fracture reduction, orthopedic surgery and other operations. In these operations, it is necessary to accurately locate or reset the bone fragments to be corrected after amputation and freeing, to restore or reconstruct the craniofacial bone structure to make them bilaterally symmetrical, and to correct deformities so that the facial shape can be satisfactorily restored. This requires repeated comparisons to determine the relative optimal position of the free bone fragments bef...

AI Technical Summary

Problems solved by technology

[0003] With the development of medical imaging technology, computer technology, and advanced manufacturing technology, CT scans are used to reconstruct the three-dimensional model of the patient's craniofacial bone, and the model is processed by rapid prototyping, so that the doctor can obtain the patient's head model entity before the operation, and perform Model surgical operation, which can shorten the operation time and improve the surgical effect, but the preoperative design in the model surgery still cannot be accurately transformed into the operation, and the surgical effect cannot be accurately guaranteed

[0004] With the development of computer-aided surgery technology, the current surgical navigation system has begun to be used clinically (such as the Chinese patent CN200910237998.6 named orthopedic robot navigation device and positioning system), but the surgical navigation system equipment is expensive and the operation is complicated , which is not conducive to wide-scale popularization

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