Sleeve to protect ratcheting stent from interference with guide catheter
First Claim
1. A system for delivering a stent to a target site in a vessel, comprising:
- a delivery catheter;
a stent disposed on the distal portion of the delivery catheter, the stent having a ratchet mechanism; and
an elastic sleeve positioned over the stent, the elastic sleeve moveable from a first position to a second position, wherein in the first position the ratchet mechanism is covered by the elastic sleeve and in the second position the ratchet mechanism is uncovered.
1 Assignment
0 Petitions
Accused Products
Abstract
A system for delivering a stent having a ratchet mechanism includes a delivery catheter having a movable elastic sleeve. The elastic sleeve covers the ratchet mechanism of the stent and prevents the ratchet mechanism from contacting a guide catheter or the vascular wall, and facilitates retraction of the delivery catheter into a guide catheter. The sleeve is retracted in order to deploy the stent. One embodiment of the invention includes a guide catheter having a curved, flexible distal tip to facilitate delivery of the stent. Another embodiment of the invention includes a method of repositioning and deploying a stent having a ratchet mechanism within a blood vessel.
17 Citations
24 Claims
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1. A system for delivering a stent to a target site in a vessel, comprising:
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a delivery catheter;
a stent disposed on the distal portion of the delivery catheter, the stent having a ratchet mechanism; and
an elastic sleeve positioned over the stent, the elastic sleeve moveable from a first position to a second position, wherein in the first position the ratchet mechanism is covered by the elastic sleeve and in the second position the ratchet mechanism is uncovered. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of repositioning and deploying a ratcheting stent within a vessel, the method comprising:
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advancing a distal end of a guide catheter adjacent to a target site within the vessel;
advancing a delivery catheter having a ratcheting stent disposed on the distal portion thereof, and having an elastic sleeve positioned thereover, through the distal end of the guide catheter, wherein the elastic sleeve maintains a tongue portion of the stent within an inner diameter of the guide catheter;
retracting the delivery catheter into the guide catheter;
repositioning the delivery catheter adjacent to a final target site;
re-advancing the delivery catheter through the distal end of the guide catheter;
retracting the elastic sleeve; and
deploying the stent at the final target site. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification