Carotid stent apparatus and methods for treatment via body lumens
First Claim
1. A carotid stent assembly adapted to carotid arterial placement, comprising:
- a self-expanding support element having a distal end and a proximal end and comprising metal struts, including a distal strut disposed at the distal end and a proximal strut disposed at the proximal end, the support element constructed to be positioned in a body lumen and expanded from a retracted state to an expanded state; and
a knitted cover disposed over an exterior of the support element and along an entire length thereof, wherein the knitted cover and the support element are attached together only at the distal strut at a distal end of the knitted cover and the proximal strut at a proximal end of the knitted cover, wherein the knitted cover comprises a single polymer fiber having a diameter of at least 40 nanometers to 30 microns, wherein the self-expanding support element and knitted cover together have apertures sized 20 microns to smaller than 100 microns in diameter to block larger debris when the carotid stent assembly is placed in a carotid artery and expanded to the expanded state,wherein the knitted cover and the support element are attached together by sliding connections, wherein the sliding connections comprise one or more flexible loops formed from the single polymer fiber, the sliding connections being formed in the knitted cover and attached to a flexible portion of the support element, wherein a first flexible loop of the one or more flexible loops is attached to the distal strut and slides only along the distal strut and a second flexible loop of the one or more flexible loops is attached to the proximal strut and slides only along the proximal strut to permit radial sliding of the knitted cover relative to the support element at the distal strut and the proximal strut.
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Accused Products
Abstract
A stent assembly adapted to carotid arterial placement that includes a self-expanding support element comprising metal struts constructed to be positioned in a body lumen and expanded from a retracted state to an expanded state, and a knitted cover disposed over an exterior of the support element and along an entire length thereof, wherein the knitted cover comprises a single polymer fiber having a diameter of at least 40 nanometers to 30 microns, wherein the self-expanding support element and knitted cover together have apertures sized 20 microns to smaller than 100 microns in diameter to block larger debris when the stent assembly is placed in a carotid artery and expanded to the expanded state. Methods of stenting a carotid artery by applying the stent assembly to the carotid artery of a patient in need of treatment and expanding the stent assembly in situ are disclosed.
194 Citations
30 Claims
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1. A carotid stent assembly adapted to carotid arterial placement, comprising:
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a self-expanding support element having a distal end and a proximal end and comprising metal struts, including a distal strut disposed at the distal end and a proximal strut disposed at the proximal end, the support element constructed to be positioned in a body lumen and expanded from a retracted state to an expanded state; and a knitted cover disposed over an exterior of the support element and along an entire length thereof, wherein the knitted cover and the support element are attached together only at the distal strut at a distal end of the knitted cover and the proximal strut at a proximal end of the knitted cover, wherein the knitted cover comprises a single polymer fiber having a diameter of at least 40 nanometers to 30 microns, wherein the self-expanding support element and knitted cover together have apertures sized 20 microns to smaller than 100 microns in diameter to block larger debris when the carotid stent assembly is placed in a carotid artery and expanded to the expanded state, wherein the knitted cover and the support element are attached together by sliding connections, wherein the sliding connections comprise one or more flexible loops formed from the single polymer fiber, the sliding connections being formed in the knitted cover and attached to a flexible portion of the support element, wherein a first flexible loop of the one or more flexible loops is attached to the distal strut and slides only along the distal strut and a second flexible loop of the one or more flexible loops is attached to the proximal strut and slides only along the proximal strut to permit radial sliding of the knitted cover relative to the support element at the distal strut and the proximal strut. - 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)
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Specification