Preparation method of porous tantalum as medical metal implant material

An implant material, porous tantalum technology, which is applied in the field of porous medical metal implant materials, can solve the problems of insufficient purity of finished products, reduced biological safety, carbon skeleton residues, etc., and achieve the goal of reducing impurity content, increasing porosity, and uniform quality Effect
CN102465211AActive Publication Date: 2012-05-23CHONGQING RUNZE PHARM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING RUNZE PHARM CO LTD
Publication Date
2012-05-23

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Abstract

The invention discloses a preparation method of porous tantalum as a medical metal implant material. The preparation method comprises the steps of: preparing tantalum powder slurry by using tantalum powder and a solution prepared from ethyl cellulose and absolute ethyl alcohol, casting the slurry into organic foams, immersing the organic foams until pores of the organic foams are fully filled with the tantalum powder slurry, then, drying to remove dispersants in the organic foams cast with the tantalum powder slurry, performing degreasing treatment in an inert gas protective atmosphere to remove organic binders and the organic foams, sintering under vacuum to obtain a porous sintered body, annealing under vacuum, and performing conventional treatment to obtain the porous tantalum, wherein the tantalum powder has the average particle size being smaller than 10mum and the oxygen content being smaller than 0.1%. The porous tantalum as the medical metal implant material prepared in the invention has a very good biocompatibility and better mechanical performance, and is particularly suitable for being used as the medical implant material for a connecting component at scapulae, skull and facial bones with tissue trauma and damages. Meanwhile, the preparation method is simple in process and easy to control; and an entire preparation process is harmless and has no pollution and no toxic dust, and the porous tantalum has no side effects to human bodies.
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Description

technical field

[0001] The invention relates to a porous medical metal implant material, in particular to a method for preparing porous tantalum as a medical implant material, in particular to a porous tantalum implant suitable for light-bearing parts of the human body and having good biocompatibility. The method of preparation of the input material. 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, ...

Claims

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