Pores of controlled geometry on a thermoplastic polymer
AssigneeVitaphore Corporation
InventorsStanley R. Conston, Glenn C. Buchanan
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Abstract
A process is provided for manufacturing nonwoven, nonbiodegradable tissue ingrowth-inducing, tissue-interfacing substrates with predetermined oriented uniform pore diameter, pore density and pore depth. Pins are inserted to a predetermined depth into a softened thermoplastic substrate or, heated pins are inserted into the substrate, then removed to form the predetermined pore pattern.
Claims3
A nonwoven, nonbiodegradable tissue ingrowth-inducing, tissue-interfacing thermoplastic substrate having surface pores of a substantially uniform density, diameter and depth, said pore density in the range of about 20 to 10,000 pores per square centimeter;
- said uniform pore diameter being in the range of about 50 to 500 microns, said pores characterized by substantially cylindrical shape with substantially flat or slightly curved bottom surfaces.
Dependencies are inferred from the claim text.