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Procedure to produce a medical implant from a magnesium alloy
专利权人:
SYNTELLIX AG
发明人:
NEUBERT, VOLKMAR,SCHAVAN, ROBERT
申请号:
ES12753710
公开号:
ES2547353T3
申请日:
2012.08.28
申请国别(地区):
ES
年份:
2015
代理人:
摘要:
Procedure for producing a medical implant, especially in the form of a bone screw, a bone nail, a bone bolt, a plate, a suture anchor or the like, to fix soft parts, especially tendons, muscles and ligaments, to a bone, or in the form of a stent or at least a portion thereof, from a magnesium alloy consisting of a proportion of magnesium of at least 80% by weight, a ratio of rare earth metal of 2.5 at 5% by weight, a yttrium ratio of 1.5 to 5% by weight, a zirconium ratio of 0.1 to 2.5% by weight, a zinc ratio of 0.01 to 0.8% in weight, and unavoidable impurities, where the total content of possible impurities is below 1% by weight and the proportion of aluminum is less than 0.5% by weight, and the rest up to 100% by weight contains magnesium, which It comprises the following steps: a) melt the alloy components at 700 to 900 ° C and then mix to obtain a to magnesium alloy, and strain the magnesium alloy into coke shells at a temperature of 700 to 900 ° C, b) melt the magnesium alloy to obtain an alloy melt, c) nebulize the alloy melt at a temperature of 775 to 850 ° C and a pressure of 17 to 23 bar under an atmosphere of protective gas, and thereby cool the nebulized alloy melt below its solidification point to obtain an alloy powder, d) shape the powder of alloy by pressing under cold isostatic conditions to obtain an alloy preform at least 100 bars, e) extrude the alloy preform to obtain a molded piece of magnesium alloy, where the alloy preform is heated before extrusion at a temperature of 300 to 400 ° C, and f) finish the medical implant from the magnesium alloy molded part.Procedimiento para producir un implante médico, especialmente en forma de un tornillo para hueso, un clavo para hueso, un perno para hueso, una placa, un anclaje para sutura o similares, para fijar partes blandas, especialmente tendones, músculos y ligamentos, a un hueso, o en forma de una endoprótesis o al menos una parte de la misma, a partir de una aleación de magnesio que consiste en una
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