Ostial stent and method for deploying same
First Claim
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1. An expandable stent to be advanced intralumenally through a great vessel to the ostium of a branch vessel and implanted therein, comprising:
- an elongated tubular body having a proximal end and a distal end, the tubular body having a diameter sized for delivery through the ostium to be positioned in the branch artery and being expandable from a compressed position to an implanted position; and
an elongated stent stop mounted adjacent the tubular body proximal end and configured to be deployed in the great vessel from an undeployed position coextensive with the wall of the tubular body to a transversely projecting deployed position projecting laterally from the tubular body to, upon the tubular body being advanced into the branch vessel, engage the wall of the great vessel to limit further distal advancement of the stent.
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Abstract
An expandable stent to be positioned and implanted at the intersection of a great vessel and a branch vessel. A deployable stop engages the wall of the great vessel surrounding the ostium and the stent body extends into and is implanted in a branch vessel. A sheath holds the stent in a compressed state during delivery and a retainer holds the stop in an undeployed position while the delivery system is advanced to a desired location at the intersection of the great vessel and the branch vessel.
87 Citations
23 Claims
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1. An expandable stent to be advanced intralumenally through a great vessel to the ostium of a branch vessel and implanted therein, comprising:
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an elongated tubular body having a proximal end and a distal end, the tubular body having a diameter sized for delivery through the ostium to be positioned in the branch artery and being expandable from a compressed position to an implanted position; and
an elongated stent stop mounted adjacent the tubular body proximal end and configured to be deployed in the great vessel from an undeployed position coextensive with the wall of the tubular body to a transversely projecting deployed position projecting laterally from the tubular body to, upon the tubular body being advanced into the branch vessel, engage the wall of the great vessel to limit further distal advancement of the stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19)
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16. A stent and catheter delivery system for repairing a branch vessel branching off from a great vessel, comprising:
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a stent including an elongated tubular body having a compressed position and being expandable to an implanted position for engaging the walls of the branch vessel, the stent further including a stop at a proximal end of the tubular body pivotable from a retracted position to a deployed position projecting laterally relative to the longitudinal axis of the tubular body to engage the wall of the great vessel on the opposite sides of the ostium;
a catheter having a mounting region at the distal extremity for mounting the stent thereon;
a retainer sheath to cover and retain the stent on the mounting region, and a retractor member associated with the retainer sheath and being moveable to withdraw the retainer off of the stent to release the stent for expansion to the implanted position.
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20. A method for delivery of an expandable stent to a branch vessel branching outwardly from an ostium of a great vessel, comprising:
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providing a stent having an elongated tubular body which is expandable to an implanted position in a vessel and further having an elongated stop adjacent a proximal end thereof;
mounting the stent on a distal end of a catheter;
introducing and advancing the catheter into the great artery;
deploying the stop from a retracted position to a deployed position projecting laterally relative to the longitudinal axis of the stent to engage the wall of the great vessel at the ostium;
further advancing the catheter to advance the stent into the branch vessel a distance sufficient to engage the stop with the wall of the great vessel; and
expanding the stent into contact with the wall of the branch vessel. - View Dependent Claims (21, 22, 23)
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Specification