Catheter support for stent delivery
First Claim
1. A stent delivery system comprising a catheter having a inner shaft and expandable inflatable means associated therewith at a distal part of the inner shaft and including mounting and retaining means for receiving a stent on the expandable means for radial expansion of the stent, the mounting and retaining means being associated with the inflatable means and being constructed and arranged for selectively providing an enlargeable mounting body for receiving the stent, wherein the inner shaft and the mounting body are inside the inflatable means and wherein the enlargeable mounting body is capable of being remotely enlarged and is at least partially axially movable relative to the inner shaft.
1 Assignment
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Accused Products
Abstract
An angioplasty and stent delivery system to facilitate introduction and placement of a stent, including a catheter having an expandable distal portion constructed and arranged for expanding the outer diameter of the catheter from a contracted state to an expanded state: a stent positioned around the distal portion of the catheter having a contracted condition and being expandable to an expanded condition, and being sized in the contracted condition to closely surround the catheter in the contracted state, the expandable distal portion of the catheter including a balloon within which or over which there is included on a catheter shaft at least one axially movable or enlargeable body of a diameter larger than the catheter shaft to which the stent and balloon are fitted, as by crimping, for holding the stent in place until it is released therefrom by expansion of the balloon.
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Citations
18 Claims
- 1. A stent delivery system comprising a catheter having a inner shaft and expandable inflatable means associated therewith at a distal part of the inner shaft and including mounting and retaining means for receiving a stent on the expandable means for radial expansion of the stent, the mounting and retaining means being associated with the inflatable means and being constructed and arranged for selectively providing an enlargeable mounting body for receiving the stent, wherein the inner shaft and the mounting body are inside the inflatable means and wherein the enlargeable mounting body is capable of being remotely enlarged and is at least partially axially movable relative to the inner shaft.
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16. A method of changing the profile of a balloon catheter for improving the mounting of a stent thereon and providing a catheter for multiple use, comprising the steps of:
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providing a balloon catheter of relatively low profile adapted and rearranged for use in an angioplasty procedure, the balloon catheter having an inner shaft and a balloon;
providing a stent mounting body having a first length onto the inner shaft, within the balloon;
shortening the length of the stent mounting body into a position on the inner shaft associated with the balloon for receiving a stent and enlarging the catheter profile at that position, and mounting a stent on the balloon and mounting body at that position.
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17. In a balloon catheter apparatus, the method of enlarging the catheter profile for facilitating the mounting of a stent thereon, comprising:
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selectively providing an enlargeable mounting body within the balloon in a position to receive a stent; and
enlarging the enlargeable mounting body from a position on the balloon catheter apparatus remote from the enlargeable mounting body, wherein the enlargeable body is enlarged by shortening its length. - View Dependent Claims (18)
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Specification