Biodegradable drug delivery vascular stent
First Claim
1. A stent having a generally tubular main body formed from a coiled strip for insertion into a lumen of a vessel of a living being wherein the main body includes an exterior surface for contacting the vessel when the main body is placed in a living being, said coiled strip including a cambered interior surface contacting a fluid passing through the lumen of the vessel, said coiled strip including a substantially flat exterior surface to which said cambered interior surfaces abuts, said cambered interior surface including a leading end facing a direction of flow and a trailing end wherein the leading end is immediately adjacent a wall of the vessel and the trailing end is immediately adjacent the wall of the vessel.
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Accused Products
Abstract
A stent includes a main body of a generally tubular shape having an exterior surface, a cambered interior surface, a leading end and a trailing end. The main body has substantially the same thickness at the leading end as at the trailing end. The stent may be made of a biodegradable material having a rate of degradation and including a drug releasable at a rate controlling the rate of degradation of the biodegradable material.
625 Citations
21 Claims
- 1. A stent having a generally tubular main body formed from a coiled strip for insertion into a lumen of a vessel of a living being wherein the main body includes an exterior surface for contacting the vessel when the main body is placed in a living being, said coiled strip including a cambered interior surface contacting a fluid passing through the lumen of the vessel, said coiled strip including a substantially flat exterior surface to which said cambered interior surfaces abuts, said cambered interior surface including a leading end facing a direction of flow and a trailing end wherein the leading end is immediately adjacent a wall of the vessel and the trailing end is immediately adjacent the wall of the vessel.
- 12. A stent having a generally tubular main body formed from a coiled strip for insertion into a lumen of a vessel of a living being wherein the main body includes an exterior surface for contacting the vessel when the main body is placed in a living being and said coiled strip including a cambered interior surface contacting a fluid passing through the lumen of the vessel, said coiled strip including a substantially flat exterior surface to which said cambered interior surfaces abuts, the cambered interior surface including a leading end and a trailing end, the leading end immediately adjacent a wall of the vessel and the trailing end immediately adjacent the wall of the vessel, wherein a camber of the cambered interior surface has an angle of curvature that is substantially within a range of 10 to 20 degrees.
Specification