Expansion-assisting delivery system for self-expanding stent
AssigneeBoston Scientific Scimed, Inc.
InventorSusan I. Shelso
Life of this patent
Estimating the term…
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.
Claims18
A delivery catheter and stent combination comprising:
- a self-expanding stent;
- and
- a catheter comprising:
- an inner member having a distal portion, a tapered tip located at a distal end of the distal portion, and a holding sleeve coaxially mounted around the distal portion;
- an inflatable member affixed to the inner member distal to the holding sleeve and proximal to the tapered tip;
- and
- an outer member axially slidable relative to the inner member, the tapered tip, and the holding sleeve;
- wherein at least a portion of the self-expanding stent surrounds the holding sleeve with the self-expanding stent positioned within the outer member.
A delivery catheter and stent combination comprising:
- a self-expanding stent;
- and
- a catheter comprising:
- an inner member having a distal portion, a tapered tip located at a distal end of the distal portion, and a holding sleeve coaxially mounted around the distal portion of the inner member;
- an inflatable member having proximal and distal ends affixed to the inner member distal to the holding sleeve and proximal to the tapered tip;
- and
- an outer member disposed over the holding sleeve and axially slidable relative to the inner member, the tapered tip, and the holding sleeve;
- wherein the self-expanding stent surrounds the holding sleeve and the outer member surrounds the stent, wherein the holding sleeve and outer member cooperate to prevent axial movement of the stent.
A delivery catheter and stent combination comprising:
- a self-expanding stent;
- and
- a catheter comprising:
- an inner member having a distal portion, a tapered tip located at a distal end of the distal portion, and a holding sleeve coaxially fixed to the distal portion;
- an inflatable member affixed to the inner member distal to the holding sleeve and proximal to the tapered tip;
- and
- an outer member axially slidable relative to the inner member, the tapered tip, and the holding sleeve;
- wherein the stent is positioned between the holding sleeve and the outer member with the holding sleeve positioned within an interior of the stent.
Dependencies are inferred from the claim text.