Bioresorbable stent
AssigneeAMS Research Corporation
InventorBalkrishna S. Jadhav
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Abstract
A bio-compatible and bioresorbable stent is disclosed that is intended to restore or maintain patency following surgical procedures, traumatic injury or stricture formation. The stent is composed of a blend of at least two polymers that is either extruded as a monofilament then woven into a braid-like embodiment, or injection molded or extruded as a tube with fenestrations in the wall. Methods for manufacturing the stent are also disclosed.
Claims21
A bioresorbable, self-expanding stent comprising a tubular-shaped bioresorbable member having first and second ends, said bioresorbable member comprising a blend of at least two bioresorbable, bio-compatible homopolymers, wherein one of the two homopolymers is poly-ε-caprolactone having a molecular weight of approximately 200,000 daltons or greater, the stent having a non-compressed diameter of between approximately 12 millimeters and 18 millimeters.
A bioresorbable, self-expanding stent having a non-compressed diameter of between approximately 12 millimeters and 18 millimeters comprising
- a radially self-expanding tubular-shaped bioresorbable member having first and second ends, a walled surface disposed between said first and second ends;
- said walled surface comprising a plurality of substantially parallel pairs of monofilaments;
- said substantially parallel pairs of monofilaments woven in a helical shape such that substantially one-half of said substantially parallel pairs of monofilaments are wound clockwise in the longitudinal direction and one-half of said substantially parallel pairs of monofilaments are wound counterclockwise in the longitudinal direction such that an alternating, over-under plait of said substantially parallel pairs of monofilaments results;
- said monofilaments consisting essentially of poly-L-lactide and poly-ε-caprolactone, wherein the poly-ε-caprolactone has a molecular weight of approximately 200,000 daltons or greater.
Dependencies are inferred from the claim text.