Stent apparatuses for treatment via body lumens and methods of use
First Claim
Patent Images
1. An enhanced stent apparatus, comprising:
- a support element comprising metal struts constructed to be positioned in a body lumen; and
a cover disposed over an exterior of the support element, wherein the cover is knitted and consists essentially of a single polymer fiber having a diameter of at least 40 nanometers to 30 microns, the single polymer fiber is biodegradable or bioresorbable, said knitted cover extending over an entire length of the exterior and having apertures sized from 100 microns to 200 microns in diameter to expose the exterior of the support to a luminal wall when the stent apparatus is placed in a body lumen, wherein said single fiber and the apertures are correspondingly sized to facilitate the growth of endothelial cells therethrough, and wherein the knitted cover has sufficient slack in the single fiber as knit to permit the knitted cover to expand upon radial expansion of the support element,wherein the cover is a single knit layer disposed directly over and adjacent to the support element, the cover is configured to hold detached plaque in place thereby preventing it from traveling into a blood stream in the lumen, and the cover is disposed as a single layer at each end of the support element, andwherein the cover and the support element are attached together at a plurality of locations using sliding connections, each sliding connection being a loop of the single polymer fiber connecting the cover and the support element, and the sliding connections providing additional expandability to the cover and allowing the cover to expand differently than the support element.
6 Assignments
0 Petitions
Accused Products
Abstract
An enhanced stent apparatus, comprising: a support element, wherein the support element is constructed to be positioned in a body lumen; and, a porous structure, the porous structure located on a surface of the support element, and wherein the porous structure is comprised of at least one fiber under 30 microns in diameter, has a coverage area of less than 30% and is provided with apertures.
-
Citations
42 Claims
-
1. An enhanced stent apparatus, comprising:
-
a support element comprising metal struts constructed to be positioned in a body lumen; and a cover disposed over an exterior of the support element, wherein the cover is knitted and consists essentially of a single polymer fiber having a diameter of at least 40 nanometers to 30 microns, the single polymer fiber is biodegradable or bioresorbable, said knitted cover extending over an entire length of the exterior and having apertures sized from 100 microns to 200 microns in diameter to expose the exterior of the support to a luminal wall when the stent apparatus is placed in a body lumen, wherein said single fiber and the apertures are correspondingly sized to facilitate the growth of endothelial cells therethrough, and wherein the knitted cover has sufficient slack in the single fiber as knit to permit the knitted cover to expand upon radial expansion of the support element, wherein the cover is a single knit layer disposed directly over and adjacent to the support element, the cover is configured to hold detached plaque in place thereby preventing it from traveling into a blood stream in the lumen, and the cover is disposed as a single layer at each end of the support element, and wherein the cover and the support element are attached together at a plurality of locations using sliding connections, each sliding connection being a loop of the single polymer fiber connecting the cover and the support element, and the sliding connections providing additional expandability to the cover and allowing the cover to expand differently than the support element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
-
-
35. An enhanced stent apparatus, comprising:
-
a support element comprising metal struts constructed to be positioned in a body lumen; and a cover disposed over an exterior of the support element, wherein the cover is knitted from a single polymer fiber having a diameter of at least 40 nanometers to 30 microns, with a stitch length of 300-400 microns, wherein the single polymer fiber is biodegradable or bioresorbable, wherein the knitted cover comprises 5 to 50 courses per cm, extends over an entire length of the exterior of the support element in a single layer and has approximate apertures sized from 100 microns to less than 200 microns in diameter to expose the exterior of the support to a luminal wall when the stent apparatus is placed in a body lumen, wherein said single fiber and the apertures are correspondingly sized to facilitate the growth of endothelial cells therethrough, and wherein the knitted cover has sufficient slack in the single fiber as knit to permit the knitted cover to expand upon radial expansion of the support element, wherein the cover is a single knit layer disposed directly over and adjacent to the support element, the cover is configured to hold detached plaque in place thereby preventing it from traveling into a blood stream in the lumen, and the cover is disposed as a single layer at each end of the support element, and wherein the cover and the support element are attached together at a plurality of locations using sliding connections, each sliding connection being a loop of the single polymer fiber connecting the cover and the support element, and the sliding connections providing additional expandability to the cover and allowing the cover to expand differently than the support element. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42)
-
Specification