Highly porous self-cohered web materials having haemostatic properties
AssigneeGore Enterprise Holdings, Inc.
InventorsRoy Biran, Edward H. Cully, Ted R. Farnsworth, Charles Flynn, Philip P. Off, Charles F. White
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Abstract
The present invention is directed to implantable bioabsorbable non-woven self-cohered web materials having a high degree of porosity. The web materials are very supple and soft, while exhibiting proportionally increased mechanical strength in one or more directions. The web materials often possess a high degree of loft. The web materials can be formed into a variety of shapes and forms suitable for use as implantable medical devices or components thereof. The web materials possess haemostatic properties.
Claims23
An implantable article comprising melt-formed abraded bioabsorbable filaments and melt-formed continuous bioabsorbable filaments to form a porous web material, wherein said material is formed by self-cohering filaments to each other at multiple contact points and then subjecting the material to a carding procedure where at least some of the filaments are engaged and separated from each other, wherein said filaments comprise at least one semi-crystalline polymeric component covalently bonded to or blended with at least one amorphous polymeric component, wherein the filaments possess partial to full polymeric component phase immiscibility when in a crystalline state, and wherein said implantable article has a percent porosity greater than ninety absent inclusion of any fillers or other added components that may effectively reduce said porosity;
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- a non-bioabsorbable material releasably attached to a population of said melt-formed filaments.
An implantable article comprising melt-formed abraded bioabsorbable filaments and melt-formed continuous bioabsorbable filaments to form a porous web material, wherein said material is formed by self-cohering filaments to each other at multiple contact points and then subjecting the material to a carding procedure where at least some of the filaments are engaged and separated from each other, wherein said filaments comprise at least one semi-crystalline polymeric component covalently bonded to or blended with at least one additional semi-crystalline polymeric component, wherein the filaments possess partial to full polymeric component phase immiscibility when in a crystalline state, and wherein said implantable article has a percent porosity greater than ninety absent inclusion of any fillers or other added components that may effectively reduce said porosity;
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- a non-bioabsorbable material releasably attached to a population of said melt-formed filaments.
Dependencies are inferred from the claim text.