Patent ID: 9138301
Filing Date: 2015-09-22
Classification: A61C,A61F,A61L

Abstract:
1. A medical device comprising: a main body which is an artificial prosthetic member made of metal or ceramics; and a metallic porous sintered body joined to at least a part of a surface of the main body, wherein the metallic porous sintered body is made of a sintered metal powder and includes a plurality of metallic porous thin layers including a first thin layer joining to the main body and a second thin layer coming in contact with living tissue, a porosity of the first thin layer is lower than the second thin layer, the porosity of each of the metallic porous thin layers is in the range of 40 to 97%, each of the first and second porous thin layers is prepared by molding a slurry, which contains a metal powder and a foaming agent, into a sheet shape by a doctor blade method, subjecting the slurry to a foaming process, drying the slurry, and defatting and sintering the resulting compact, an average pore diameter in the first and the second thin layers is in the range of 20 to 800 μm, each of the first and second thin layers has a three-dimensionally-open pore structure in a substantially spherical shape defined by foams formed by an action of the foaming agent in the foaming process, and a specific surface area of each of the first and the second thin layers is in a range of 0.01 to 0.5 m