Sintered coatings for implantable prostheses

Details Sintered coatings for implantable prostheses Sintered coatings for implantable prostheses

1993-01-22

1993-11-23

Isabella, David

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

623 18, 623 22, 623 11, 427 2, A61F 228, A61F 230, A61F 232, A61F 202

Patent

active

052639860

ABSTRACT:
A sinterable coating for an implantable prosthesis is provided having 1) interstices into which tissue or bone can grow, and 2) increased surface roughness which provides enhanced initial press-fit fixation. The coating includes at least two sets of particles having different mean diameters. The sizes and numbers of particles are chosen so as to produce a matrix of smaller particles in which are embedded a lesser number of spaced-apart larger particles. The smaller particles provide support for the larger particles, and the larger particles stand proud of the smaller particles to provide the enhanced surface roughness.

REFERENCES:
patent: 3605123 (1971-09-01), Hahn
patent: 4156943 (1979-06-01), Collier
patent: 4206516 (1980-06-01), Pillier
patent: 4542539 (1985-09-01), Rowe, Jr. et al.
patent: 4629464 (1986-12-01), Takata et al.
patent: 4713076 (1987-12-01), Draenert
patent: 4790852 (1988-12-01), Noiles
patent: 4813965 (1989-03-01), Roberts

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