Skull ring and bar combined external fixing support

Abstract

The invention discloses a skull ring and bar combined external fixing support. The support comprises a plurality of side plates, connecting pillars and sliding blocks, wherein the connecting pillars and the sliding blocks are connected between the side plates. The sliding blocks move in side plate frames, gears on the sliding blocks and inner racks of the side plates are engaged, and thus precision moving can be achieved. The rotating gears drive the whole sliding blocks to move along an arc line, and the side plates have different radians to be selected. Arc-shaped bosses on the two sides of each sliding block are clamped in arc-shaped grooves of the side plates to slide, and thus the accuracy of a trajectory is guaranteed. The sliding blocks and the connecting pillars are both provided with a plurality of bone pins, so that multidirectional positioning is achieved. The sliding blocks can stably slide in a four-side framework through the four-side framework established by the arc-shaped side plates and the connecting pillars, and the bone pins are driven to carry out a bone transport clinical operation along a certain radian; the structure is simple and adjusting is convenient.

Description

technical field [0001] The invention relates to a skull ring rod combined external fixation bracket. Background technique [0002] Skull fractures or skull defects during craniotomy are generally modified clinically by using allogeneic biological or metal materials, and this repair has brought many disadvantages such as: foreign body rejection, thermal expansion, etc., Russia has This literature and clinical data show that using bone transfer to repair bone defects is a very effective operation. Since it is in the skull, it requires professional orthopedic instruments for fixation and bone transfer to help the defective bone recover and heal as soon as possible. Skull ring rod combined external fixation bracket is a professional medical device used in clinical surgery. At present, most of the orthopedic ring-rod combination external fixation brackets commonly used in domestic and foreign medical markets are combined with a general-purpose ring and threaded rod, and generall...

AI Technical Summary

Problems solved by technology

At present, most of the orthopedic ring-rod combination external fixation brackets commonly used in domestic and foreign medical markets are combined with a general-purpose ring and threaded rod, and generally have the following disadvantages: 1. During the bone transfer process, it is impossible to accurately slide and adjust according to the different curvatures of the skull. Fixed; 2. The structure of general equipment is complex and the operation of combination is cumbersome

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