Production of porous coating on a prosthesis

Details Production of porous coating on a prosthesis Production of porous coating on a prosthesis

1984-01-09

1987-02-24

Lechert, Jr., Stephen J.

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

Implantable prosthesis

Bone

419 2, 419 8, 419 36, 419 37, 419 49, 427 2, 427180, 427191, 427201, 428550, 428926, A61F 504

Patent

active

046449426

ABSTRACT:
Preselected surface areas of a prosthesis are covered by a blend of matching primary metallic particles and expendable particles. The particles are compressed and heated to assure that deformation and metallurgical bonding occurs between them and between the primary particles and the surface boundaries of the prosthesis. Porosity is achieved by removal of the expendable material. The result is a coating including discrete bonded particles separated by a network of interconnected voids presenting a homogeneous porous coating about the substrate. It has strength suitable for bone implant usage without intermediate adhesives, and adequate porosity to promote subsequent bone ingrowth.

REFERENCES:
patent: 3905777 (1975-09-01), Lacroix
patent: 4017911 (1977-04-01), Kafesjian et al.
patent: 4073999 (1978-02-01), Bryan et al.
patent: 4156943 (1979-06-01), Collier
patent: 4309488 (1982-01-01), Heide et al.
patent: 4374669 (1983-02-01), MacGregor

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