Prosthesis formation having solid and porous polymeric component

Details Prosthesis formation having solid and porous polymeric component Prosthesis formation having solid and porous polymeric component

1981-08-10

1984-06-19

Frinks, Ronald L.

Surgery

Truss

Pad

3 191, 128 92C, 128 92CA, 427 2, A61F 124

Patent

active

044546122

ABSTRACT:
A prosthesis having a porous polymeric coating over a non-porous polymeric substrate is disclosed. The porous polymeric coating is constructed by forming a mass of randomly arranged fibers of polymeric material in contact with a non-porous polymeric substrate of a compatible material. The entire prosthesis and mass of fibers is enclosed in a mold with interior dimensions conforming to the intended shape of the article. The mold is then subjected to an elevated temperature for sufficient time to sinter the fibers of the mass to each other and to the underlying substrate yet leave a pore volume of about 50%. The preformed material is ultra-high molecular weight polyethylene. Preferred sintering conditions are also disclosed.

REFERENCES:
patent: 3938198 (1976-02-01), Kahn et al.
patent: 3986212 (1976-10-01), Sauer
patent: 3987499 (1976-10-01), Scharbach et al.
patent: 4118532 (1978-10-01), Homsy
patent: 4129470 (1978-12-01), Homsy
patent: 4164794 (1979-08-01), Spector et al.
patent: 4213816 (1980-07-01), Morris

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