Single-rod type bone transport device

Abstract

The invention provides a single-rod type bone transport device. The single-rod type bone transport device comprises a bone transport device body structure, a knitting needle clip and a bone needle, wherein the bone transport device body structure comprises a base rod and a casing, the base rod comprises an adjusting section in the middle and first and second fixing sections at two ends, the casingsleeves the adjusting section in a sliding manner, an axially extending guide groove is formed in the adjusting section, a guide key in guide sliding fit with the guide groove is detachably mounted on the casing, an external thread is arranged on the outer surface of the adjusting section, first and second nuts in threaded fit with an external thread through internal threads are arranged at the two ends of the casing, the first and second nuts are screwed to drive the casing to move axially, the knitting needle clip and the bone needle are mounted at the first and second fixing sections to fix two ends of to-be-pulled bone, and the knitting needle clip and the bone needle are installed on the casing. The single-rod type bone transport device has the advantages of being simple in structure, easy in skeleton fixation, low in cost, convenient and rapid to operate and capable of being combined with a ring type external fixing support and a combined external fixing support for use.

Description

technical field [0001] The invention relates to a single-rod bone moving device. Background technique [0002] Bone transfer device is a special device for bone lengthening. Bone transfer is distraction osteogenesis, which is mainly aimed at bone regeneration of bone defect. Soft tissue and blood supply, the bone transfer device fixes both ends of the bone, and slowly pulls the truncated free bone segment towards the defect, continuously stimulates the body tissue, stimulates the regeneration potential of the body tissue, and makes the osteotomy gap form new bone to reach the bone. purpose of regeneration. The traditional external fixation brackets for bone lengthening are ring-type external fixation brackets or orbital-type external fixation brackets, which have complex structures, cumbersome operations, screw fixation cannot freely pass needles, and cannot give suitable stress stimulation to the fracture end, resulting in the stress of external fixation brackets. Disadva...

AI Technical Summary

Problems solved by technology

The traditional external fixation brackets for bone lengthening are ring-type external fixation brackets or orbital-type external fixation brackets, which have complex structures, cumbersome operations, screw fixation cannot freely pass needles, and cannot give suitable stress stimulation to the fracture end, resulting in stress on the external fixation brackets. Disadvantages such as occlusion, delayed bone healing, non-union, slow bone mineralization, and long time on the frame limit its popularization and application.

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