Biocompatible composite material and a method for producing the

Details Biocompatible composite material and a method for producing the Biocompatible composite material and a method for producing the

1989-11-07

1991-12-31

Ryan, Patrick J.

Stock material or miscellaneous articles

Composite

Of quartz or glass

428688, 424602, 424656, 424682, 427380, 501 17, B32B 900

Patent

active

050771329

ABSTRACT:
A biocompatible composite material comprising a substrate having a glass-hydroxyapatite ceramic layer disposed thereon, and optionally having an intermediate glass layer between the substrate and the layer. The glass-hydroxyapatite ceramic layer comprises a continuous glass phase having a hydroxyapatite ceramic dispersed therein, said hydroxyapatite ceramic having a calcium/phosphorous molar ratio of 1.50 to 1.75, wherein said hydroxyapatite ceramic is comprised mainly of hydroxyapatite. The surface portion of the layer is in a roughened state having voids and having the hydroxyapatite ceramic exposed. The composite material may be produced by a method comprising applying a blend of a powdery glass with a hydroxyapatite ceramic to the surface of a substrate with or without a glass layer disposed thereon, firing the resulting coated substrate and subjecting the fired coated substrate to an etching action with an acid. The composite material is useful as a bone substitute material for the reconsutrction of bone defects.

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