Expansion-assisting delivery system for self-expanding stent
First Claim
1. A delivery system for a self-expanding stent, the delivery system comprising:
- an inner member having a distal end, the inner member being configured to retain a self-expanding stent proximate the distal end, the inner member including a marker band disposed between a distalmost leading end of the self-expanding stent and a trailing end of the self-expanding stent, wherein the marker band indicates a re-constrain limit of a partially-expanded, self-expanding stent;
a holding sleeve coaxially mounted about the inner member;
an outer member positioned about the inner member and the holding sleeve, the outer member being slidable relative to the inner member in an axial direction, wherein when the self-expanding stent is loaded onto the delivery system, the self-expanding stent is placed between the holding sleeve and the outer member; and
a single inflatable device positioned about the inner member, wherein the inflatable device is disposed solely between the holding sleeve and the distal end of the inner member.
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Abstract
A delivery system for a self-expanding stent includes a catheter having a distal end and being configured to retain a self-expanding stent proximate the distal end. The delivery system also includes an inflatable device provided on the catheter and positioned proximate the distal end. The inflatable device, typically a balloon, is configured to selectively assist the self-expanding stent with radial expansion. The catheter includes a tubular member and an outer member coaxially positioned about the tubular member. The outer member can slide relative to the tubular member in an axial direction. The outer member is configured to retain a self-expanding stent in a radially-compressed position and to release the self-expanding stent to a radially-expanded position.
78 Citations
13 Claims
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1. A delivery system for a self-expanding stent, the delivery system comprising:
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an inner member having a distal end, the inner member being configured to retain a self-expanding stent proximate the distal end, the inner member including a marker band disposed between a distalmost leading end of the self-expanding stent and a trailing end of the self-expanding stent, wherein the marker band indicates a re-constrain limit of a partially-expanded, self-expanding stent; a holding sleeve coaxially mounted about the inner member; an outer member positioned about the inner member and the holding sleeve, the outer member being slidable relative to the inner member in an axial direction, wherein when the self-expanding stent is loaded onto the delivery system, the self-expanding stent is placed between the holding sleeve and the outer member; and a single inflatable device positioned about the inner member, wherein the inflatable device is disposed solely between the holding sleeve and the distal end of the inner member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification