Bone Retractor

Abstract

A bone fragment distractor, including a distractor fixed bracket, an adjustable stretch frame, a distractor control device, a steel needle fixing clip and a Kirschner wire; the distractor fixed bracket is provided with a manual adjustment nut The placement hole and the fixed bracket limit through hole are intersecting, and the manual adjustment nut placement hole and the fixed bracket limit through hole intersect; the adjustable drafting frame is composed of a first guide plate and a second guide plate, and the first guide plate Both ends of the plate and both ends of the second guide plate are provided with guide plate through holes, and between the guide plate through holes at both ends, the first guide plate and the second guide plate are also provided with guide plate through holes. Length adjustment hole; the drafter control device includes a manual adjustment nut, a drafting threaded adjustment rod, a guide shaft head and a bolt set. The invention has a novel structural design and perfect functions. It can adjust the stretching length, angle and scale, realize three-dimensional adjustment of the bone stretcher, and can be widely used for transverse and longitudinal stretching surgical treatment of various bones.

Description

technical field

[0001] The invention relates to the field of medical instruments, in particular to a bone fragment stretching device. Background technique

[0002] The development of new orthopedic external fixation devices in my country has made considerable progress and development, but there are shortcomings in the research and development of bone distractors. Most of the existing bone distractors are bone longitudinal traction stretchers, which do not have Lateral traction function. At present, the orthopedic field has started to research and develop bone transverse retractor products based on the mechanism of rich blood supply in the bone marrow cavity and the rapid formation of new blood vessels. Although some bone external fixators have bone transverse traction in the structure function, but its design is not perfect. For example, when implementing horizontal drafting, because the adjustment nuts of the draft fixing pins are all matched separately, when adjustment is re...

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