Built-in arc distraction osteogenesis apparatus

Abstract

The invention relates to a built-in arc distraction osteogenesis apparatus, which comprises a cobalt-chromium crown, wherein the cobalt-chromium crown sleeves teeth at two sides; an arc-shaped guide rail is arranged at the cheek side of the cobalt-chromium crown; the bending degree of the arc-shaped guide rail is consistent with the physiological bending degree of the teeth; an anchor device is arranged on the cobalt-chromium crown, and the arc-shaped guide rail is fixed to the cobalt-chromium crown via the anchor device; a distraction osteogenesis device is additionally arranged on the arc-shaped guide rail; the distraction osteogenesis device comprises a traction device main body, a threaded rod and a guide rod; the traction device main body comprises two fixed supporting rods which arearranged in a parallel mode; one end of each of the two fixed supporting rods is inserted into the arc-shaped guide rail; through holes, from which the threaded rod and the guide rod can run through,are additionally arranged in the fixed supporting rods; the threaded rod and the guide rod are arranged in a mode of being perpendicular to the fixed supporting rods; and the threaded rod is arrangedbetween the arc-shaped guide rail and the guide rod. The built-in arc distraction osteogenesis apparatus provided by the invention is simple in structure; jawbone can undergo arc traction, so that anideal jawbone form can be recovered; and in addition, the built-in arc distraction osteogenesis apparatus is stable in traction force applying mode and good in controllability.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a built-in arcuate distraction osteogenesis device. Background technique [0002] Cleft lip and palate and cleft alveolar ridge are common congenital deformities in clinical practice. Early surgery is the main method of treatment. However, clinical investigations have found that patients with cleft lip and palate are prone to craniofacial and maxillary deformities after surgery. had a serious impact. Traditional orthopedic treatment of craniofacial and maxillofacial deformities after cleft lip and palate and alveolar ridge cleft is not effective. Osteogenesis refers to a technique in which a special traction device is used to continuously and constantly apply traction force between two cut bone segments to induce new bone formation to lengthen or widen the bone. Clinically, linear retractors are often used, but they cannot meet the needs of the repair of special jaw...

AI Technical Summary

Problems solved by technology

Clinically, linear retractors are often used, but they cannot meet the needs of the repair of special jaws. The jaw is a complex three-dimensional structure. The jaw of normal people grows in an arc shape, and only two-dimensional reconstruction is achieved when the jaw is defective. The axial elongation does not meet the actual needs; most of the current technologies for arc stretching use external stretchers, the main device is located outside the skin, and the stretchers are complex in structure, bulky and cumbersome to operate, which is extremely difficult during treatment. The earth affects the patient's diet and sleep, and it is impossible to carry out normal social activities; in addition, due to the large distance between the external instrument and the cortical bone, most of the traction force during traction is converted into bending of steel nails or bone nails Torque, which will affect the later traction and traction results

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