Composite prosthetic device with porous polymeric coating

Details Composite prosthetic device with porous polymeric coating Composite prosthetic device with porous polymeric coating

1975-04-11

1976-10-19

Frinks, Ronald L.

Surgery

Truss

Pad

3 1912, 128 92C, 3 1, A61F 124

Patent

active

039862127

ABSTRACT:
The invention is an improvement in a prosthetic device of the type that is a composite of a first material adapted to be strong enough to withstand the wear and stress exerted on the prosthetic device and a second material in the form of a coating fixed to the first material over a substantial portion of the outer surface of the prosthetic device that engages the bone to which the prosthetic device is attached. The coating is adapted to allow adjacent human tissue to grow therein. The improvement comprises the coating being at least 1 mm. thick and formed of a porous polymeric material that includes a network of interconnected pores throughout its volume. The average pore diameter of the coating ranges from 50 .mu.m - 300 .mu.m, the minimum pore volume being 30%.

REFERENCES:
patent: 3744061 (1973-07-01), Frost
patent: 3765033 (1973-10-01), Goldberg et al.
patent: 3790507 (1974-02-01), Hodosh
patent: 3808606 (1974-05-01), Tronzo
"Porous Implant Systems for Prosthesis Stabilization", by C. A. Homsy et al., Reprint from Clinical Orthopaedics, No. 89, Nov.-Dec., 1972, pp. 220-235.
"The Role of Porous Polymeric Materials in Prosthesis Attachment", by B. W. Sauer et al., presented at the Clemson University Fifth Annual Biomaterial Symposium, Apr. 14-18, 1973, (8 pages).
"The Response of the Body Environment to Implants", by P. F. Williams, (chapter 5), Implants in Surgery by Williams & Roaf, W. B. Saunders Co. Ltd. publisher (London), July 3, 1973, p. 227.

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