Self-expanding stent delivery system
First Claim
Patent Images
1. A self-expanding stent delivery system comprising:
- a substantially tubular shaft having a proximal end, a distal end, a guidewire lumen extending between the proximal and distal ends, arid a stent bed proximate the distal end upon which the self-expanding stent is positioned; and
a substantially tubular sheath defining an interior volume and coaxially positioned over the tubular shaft and stent, the tubular sheath including an outer polymeric layer and a substantially impenetrable and lubricious inner layer.
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Abstract
A self-expanding stent delivery apparatus having a sheath comprising a hard and lubricious coating for the safe, effective and accurate deployment of self-expanding stents. The sheath comprises an inner layer of pyrolytic carbon or other similar substance which prevents the stent from becoming embedded. The inner layer is also lubricious. This combination of properties allows for easier deployment and reduced profile.
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Citations
8 Claims
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1. A self-expanding stent delivery system comprising:
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a substantially tubular shaft having a proximal end, a distal end, a guidewire lumen extending between the proximal and distal ends, arid a stent bed proximate the distal end upon which the self-expanding stent is positioned; and
a substantially tubular sheath defining an interior volume and coaxially positioned over the tubular shaft and stent, the tubular sheath including an outer polymeric layer and a substantially impenetrable and lubricious inner layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification