Miniature built-in automatic continuous sutural distraction osteogenesis device

Abstract

A miniature built-in automatic continuous sutural distraction osteogenesis device comprises a main anchorage rod and a distracter; the main anchorage rod is a slender titanium alloy rod, the front part of which is provided with a distracter hole and the tail of which is provided with at least two fixing holes; the distracter is made of an iron-nickel memory alloy wire, the preset shape is a W, the restored shape is a U, both ends are bent, and one of the ends is mounted in the distracter hole; and an auxiliary anchorage rod is arranged on one side of the main anchorage rod, so that a triangular support is formed. The device is individually designed by the three-dimensional CT computer-assisted design technology, can be fabricated in a simple way, and accords with the low-carbon economy, the operation of the surgery is convenient, the distraction process is smooth, and the distraction effect is accurate; the distraction process is simple and convenient, the surgery is minimally invasive and simple, the length of stay is short, the frequency of further consultation is less, the expense is less, and the device is highly compatible with the tissues of the human body, can be safely andreliably fixed, cannot fall apart due to external force, cannot affect the normal study, life, outing and the like of a diseased child, can be worn for a long time, and has a remarkable treatment effect.

Description

technical field [0001] The invention relates to a medical orthopedic device, in particular to a miniature built-in automatic continuous suture traction osteogenesis device for treating hypoplastic bones in the middle of the face. Background technique [0002] Skeletal hypoplasia in the middle of the face is one of the severe craniofacial deformities, accounting for about 50% of craniofacial deformities. [0003] The mainstay of treatment in the past has been traditional orthognathic surgery and osteotomy and distraction osteogenesis. [0004] The main problems of traditional orthognathic surgery are large trauma, heavy bleeding, high risk, limited maxillary advancement distance, need for bone grafting, donor site complications, long operation time, and difficult to obtain intraoperative or postoperative prediction. As a result, the postoperative recurrence rate is 10% in non-cleft lip and palate patients and 25-50% in cleft lip and palate patients. [0005] Osteotomy and d...

AI Technical Summary

Problems solved by technology

[0009] The main problem at present is that ① a hard external fixation traction device needs to be installed on the skull or a craniofacial bow needs to be worn as an anchorage (see Figure 9 ), coupled with the long traction period and long fixation period, it is necessary to wear a bulky traction device for half a year, which brings a lot of inconvenience to the patient's study, life, outing activities and visits

②At the same time, the hard external fixation device installed outside the skull is easy to be loosened and scattered by external force to stop the traction and needs to be relocated

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