Preparation method for medical metal implant material porous niobium

An implant material and porous niobium technology, which is applied in the field of preparation of porous niobium implant materials, can solve the problems of insufficient purity of finished products, reduced biological safety, carbon skeleton residues, etc. Effect
CN102475903AInactive Publication Date: 2012-05-30CHONGQING RUNZE PHARM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHONGQING RUNZE PHARM CO LTD
Publication Date
2012-05-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a preparation method for a medical metal implant material porous niobium. According to the invention, a solution prepared from ethyl cellulose which is used as an organic binder and anhydrous ethanol which is used as a dispersant and mixed powder prepared from starch and niobium powder which has an average particle size of less than 43 mu m and oxygen content of less than 0.1% are used to prepare niobium powder slurry which is casted and dipped into an organic foam; the organic foam is dried and then is subjected to degreasing under the protection of an inert gas atmosphere and to sintering in vacuum so as to prepare a porous sintered body, sintered niobium powder particles mutually have a sintering neck structure, and after annealing in vacuum and normal post-treatment, porous niobium is prepared; wherein, the content of starch in the mixed powder of metallic niobium powder and starch is 5 to 10%. The medical metal implant material porous niobium prepared in the invention has excellent bio-compatibility and bio-safety; meanwhile, the porous niobium has a sintering neck structure, which enables mechanical properties of the porous niobium like ductility, etc., to be improved; the invention provides a good method for convenient and effective application of porous niobium in the field of medical metal implantation.
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Description

technical field

[0001] The invention relates to a preparation method of porous niobium as a medical implant material, in particular to a preparation method of a porous niobium implant material suitable for light-bearing parts of a human body. Background technique

[0002] Porous medical metal implant materials have important and special purposes such as treating bone tissue trauma and femoral tissue necrosis. The common materials of this type include porous metal stainless steel and porous metal titanium. As a porous implant material used in the treatment of bone tissue trauma and femoral tissue necrosis, its porosity should reach 30-80%, and the pores should be all connected and uniformly distributed, or partially connected and uniformly distributed according to the needs, so that it can be connected with The growth of bone tissue in the human body is consistent, and the weight of the material itself is reduced, so that it is suitable for human implantation.

[0003] The r...

Claims

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