Methods and apparatus for stenting comprising enhanced embolic protection coupled with improved protections against restenosis and thrombus formation
First Claim
1. A method of reducing thrombus formation in a vessel of a vasculature comprising:
- providing an apparatus having a tubular expandable member and a membrane, the tubular expandable member having inner and outer surfaces and proximal and distal ends, the membrane being disposed about the tubular member, the membrane including a plurality of pores, the pores having a minimum width to promote endothelial cell ingrowth and a maximum width to prevent release of a predetermined size of emboli;
coupling the tubular member to a delivery system;
advancing the tubular member in a collapsed delivery configuration within the vessel; and
deploying the apparatus from a collapsed configuration to an expanded configuration in which the apparatus engages a wall of the vasculature at a treatment site, the membrane providing a smooth surface for fluid flow, promoting endothelial cell ingrowth, and preventing release of the predetermined size of emboli.
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Accused Products
Abstract
Apparatus and methods for stenting are provided comprising a stent attached to a porous biocompatible material that is permeable to endothelial cell ingrowth, but impermeable to release of emboli of predetermined size. Preferred stent designs are provided, as well as preferred manufacturing techniques. Apparatus and methods are also provided for use at a vessel branching. Moreover, embodiments of the present invention may comprise a coating configured for localized delivery of therapeutic agents. Embodiments of the present invention are expected to provide enhanced embolic protection, improved force distribution, and improved recrossability, while reducing a risk of restenosis and thrombus formation.
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Citations
15 Claims
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1. A method of reducing thrombus formation in a vessel of a vasculature comprising:
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providing an apparatus having a tubular expandable member and a membrane, the tubular expandable member having inner and outer surfaces and proximal and distal ends, the membrane being disposed about the tubular member, the membrane including a plurality of pores, the pores having a minimum width to promote endothelial cell ingrowth and a maximum width to prevent release of a predetermined size of emboli; coupling the tubular member to a delivery system; advancing the tubular member in a collapsed delivery configuration within the vessel; and deploying the apparatus from a collapsed configuration to an expanded configuration in which the apparatus engages a wall of the vasculature at a treatment site, the membrane providing a smooth surface for fluid flow, promoting endothelial cell ingrowth, and preventing release of the predetermined size of emboli. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification