A kind of internal fixation material for fracture reduction and preparation method of internal fixation nail

Abstract

The invention provides an internal fixation material for fracture reduction and preparation methods of internal fixation nails. The used materials mainly comprise a high polymer material having the excellent mechanical property, the excellent chemical resistance, the excellent high temperature resistance, the excellent radiation resistance, the excellent hydrolysis resistance, the excellent creep resistance, the excellent wear resistance and high cleanliness, continuous carbon fibers or glass fibers, biological ceramics having bone conduction and bone induction functions, or a degradable inorganic material having the bone cell induction function. The preparation methods comprise the preparation method of an internal solid fixation nail for fracture reduction and the preparation method of an internal hollow fixation nail for fracture reduction. The fixation material prepared by adopting the above components has the excellent biocompatibility, follows the BO fixation conception, mainly adopts the elastic internal fixation, and has the sufficient mechanical strength, so that the mechanical demand needed by internal fracture fixation can be satisfied, meanwhile, the elasticity modulus is similar to that of the skeleton, so that the stress shielding of the fixation part can be avoided, the heal of the bone tissue can be promoted, the problem that the degradation and the bone heal rate are not matched is solved, and the secondary operation for taking out is not needed.

Description

technical field [0001] The invention relates to an internal fixation material for fracture reduction and a preparation method of an internal fixation nail. Background technique [0002] Since the late 1950s, the strong internal fixation technique promoted by the AO school has been the classic rule in the field of fracture treatment. On the basis of summarizing the experience of predecessors, the AO school proposed four principles for fracture treatment: [0003] 1. Anatomical reduction; [0004] 2, strong and fixed; [0005] 3. Non-invasive operation; [0006] 4. Early painless activities. [0007] Its core purpose is to eliminate the local micro-movement of the fracture through the compression fixation of the fracture end and the reconstruction of the anatomical structure, so that the fracture can achieve primary healing without callus. If a callus appears on the broken end of the bone, it is usually considered a sign of unstable fixation and should be avoided as much ...

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Problems solved by technology

However, in clinical use, this material also shows its own defects, such as low initial strength of degradable materials, mismatch between degradation and bone healing rate, acidity of degradation products leading to necrosis of surrounding bone tissue, generation of sinuses, sterility Inflammation and fluid accumulation etc.

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