Patent ID: 9707321
Date: 2017-07-18
CPC Classifications: A61C,A61F,A61L,B22F,C22C,Y10T

Claim:
1. A porous implant material, comprising: a first set of metal bodies; and a second set of porous metal bodies having a higher porosity than and bonded to the metal bodies of the first set in an alternating manner, the metal bodies of the first and second sets bonded with each other at a bonded-boundary surface parallel to a first direction; wherein the implant material has a total porosity rate of 50 to 92%, each of the porous metal bodies of the second set has a three-dimensional network formed from a continuous skeleton in which a plurality of pores are interconnected, and in which the pores are long along the direction parallel to the bonded-boundary surface and short along the direction orthogonal to the bonded-boundary surface, each of the metal bodies of the first set has a porosity rate of 0.5 to 50%, substantially spherical pores that are more spherical than the pores in the porous metal bodies of the second set, and a thickness less than a respective thickness of each of the porous metal bodies of the second set, and a compressive strength compressing in a direction parallel to the bonded-boundary surface is 1.4 times to 10 times a compressive strength compressing in a direction orthogonal to the bonded-boundary surface; and wherein the porous implant material is structurally configured for use as one of (i) a sponge bone with a compressive strength in the direction parallel to the bonded-boundary surface of 4 to 70 MPa and a compressive elastic modulus in the direction parallel to the bonded-boundary surface of 1 to 5 GPa, and (ii) a cortical bone with a compressive strength of 100 to 200 MPa and a compressive elastic modulus in the direction parallel to the bonded-boundary surface of 5 to 20 GPa.