Patent ID: 8871142
Filing Date: 2014-10-28
Classification: A61F,A61L,B22F,C22C

Abstract:
1. A method for processing a green body comprising mixing at least one metal powder with extractable particles of salt or sugar, thereby forming a powder mixture in which said metal powder and extractable particles assume respective positions; shaping said power mixture into a shaped object; compacting said shaped object to form said green body; exposing said green body to a solvent in which said extractable particles are soluble to remove at least a portion of said extractable particles thereby forming a green body having a porosity of about 50 to 90%; and impacting said green body that has been exposed to said solvent with a particulate material for a time and under conditions effective to displace a portion of said metal powder from said green body; sintering said green body having a portion of said metal powder displaced therefrom to form an implant having a roughness that corresponds to a Pa value of at least 50, a roughness that corresponds to a Pp value of at least 90, a roughness that corresponds to a Pt value of at least 200, or a roughness that corresponds to a Pq value of at least 60.