Biomedical aid or implant

Abstract

The invention relates to a stent manufactured from an alloy which contains at least 60% by weight, based on the weight of the alloy, of one or more metals selected from the group of gold, platinum, palladium and silver, silver being used only in combination with gold, platinum and/or palladium, and the alloy having a yield point of at least 200 N/mm 2 and an elongation at break of at least 8%.

1 . (canceled)  
     
     
         2 . The method according to  claim 9 , wherein the weight ratio of gold: palladium is between 3:1 and 0.5:1.  
     
     
         3 . The method according to  claim 9 , wherein the weight ratio of silver: palladium is between 3:1 and 0.3:1.  
     
     
         4 . The method according to  claim 9 , wherein the alloy contains at least 0.5% by weight, based on the weight of the alloy, of one or more metals selected from the group consisting of iridium, indium, gallium, tin, titanium, copper, zinc, and ruthenium.  
     
     
         5 . The method according to  claim 9 , wherein the alloy has a yield point of at least 300 N/m 2 .  
     
     
         6 . The method according to  claim 9 , wherein the alloy has an elongation at break of at least 20%.  
     
     
         7 . The method according to  claim 9 , wherein the alloy further contains one or more of the metals selected from the group consisting of rhodium, rhenium, cerium, germanium, boron, iron, tantalum, nickel, cobalt, aluminum, niobium, zirconium, manganese, chromium, molybdenum and tungsten.  
     
     
         8 . The method according to  claim 9 , wherein the alloy further contains one or more elements from the group consisting of silicon and carbon.  
     
     
         9 . A method of use of an alloy which contains at least 60% by weight, based on the weight of the alloy, of a combination of gold and palladium, or of a combination of silver and palladium, and the alloy having a yield point of at least 200 N/mm 2  and an elongation at break of at least 8%, comprising the step of manufacturing a biomedical aid or implant, comprising the alloy, for application in the human body at a site where the aid or implant is not exposed to the atmosphere.  
     
     
         10 . A method according to  claim 9 , wherein the aid or implant is a stent, aneurysm clip, cardiac valve, occlusion coil, suture material, artificial joint or osteosynthesis material.  
     
     
         11 . A method of use of an alloy which contains at least 60% by weight, based on the weight of the alloy, of a combination of gold and palladium, or of a combination of silver and palladium, and the alloy having a yield point of at least 200 N/mm 2  and an elongation at break of at least 8%, comprising manufacturing a biomedical aid or implant having a structure comprising the alloy for increasing the MR compatibility of the biomedical aid or implant.  
     
     
         12 . The method of  claim 11 , wherein the biomedical aid or implant has a higher MR compatibility than a second biomedical aid or implant which has the same structure as the biomedical aid or implant comprising the alloy but for comprising stainless steel 316 instead of the alloy.  
     
     
         13 . The method of  claim 11 , wherein the biomedical aid or implant has a higher MR compatibility than a second biomedical aid or implant which has the same structure as the biomedical aid or implant comprising the alloy but for comprising nitinol instead of the alloy.  
     
     
         14 . The method of  claim 11 , wherein the biomedical aid or implant has a higher MR compatibility than a second biomedical aid or implant which has the same structure as the biomedical aid or implant comprising the alloy but for comprising tantalum instead of the alloy.  
     
     
         15 . The method of  claim 9 , wherein said manufacturing comprises forming a wire comprising the alloy.  
     
     
         16 . The method of  claim 9 , wherein said manufacturing comprises forming a tube comprising the alloy.  
     
     
         17 . The method of  claim 11 , wherein said manufacturing comprises forming a wire comprising the alloy.  
     
     
         18 . The method of  claim 11 , wherein said manufacturing comprises forming a tube comprising the alloy.  
     
     
         19 . The method of  claim 11 , wherein the weight ratio of gold: palladium is between 3:1 and 0.5:1.  
     
     
         20 . The method of  claim 11 , wherein the weight ratio of silver: palladium is between 3:1 and 0.3:1.  
     
     
         21 . The method of  claim 11 , wherein the alloy contains at least 0.5% by weight, based on the weight of the alloy, of one or more metals selected from the group consisting of iridium, indium, gallium, tin, titanium, copper, zinc, and ruthenium.