Methods and apparatus for luminal stenting
First Claim
Patent Images
1. A system for stent delivery, the system comprising:
- a self-expanding stent having a proximal end portion, a distal end portion, anda lumen;
a push wire extending through the lumen;
a first retaining polymer (a) in direct contact with the push wire and (b) disposed about and retaining the proximal end portion in a compressed configuration;
a second retaining polymer (a) in direct contact with the push wire and (b) disposed about and retaining the distal end portion in a compressed configuration;
a first resistance member in thermal communication with the first retaining polymer; and
a second resistance member in thermal communication with the second retaining polymer;
wherein the second retaining polymer is releasable from the stent independently of release of the first retaining polymer from the stent.
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Accused Products
Abstract
A stent delivery device includes a first retaining polymer disposed about and retaining a self-expanding stent at a proximal end portion, a second retaining polymer disposed about and retaining the self-expanding stent at a distal end portion, a first resistance member in thermal communication with the first retaining polymer, and a second resistance member in thermal communication with the second retaining polymer. The second retaining polymer and second resistance member are configured to allow release and expansion of the distal end portion of the self-expanding stent without expansion of the proximal end portion of the self-expanding stent.
590 Citations
18 Claims
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1. A system for stent delivery, the system comprising:
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a self-expanding stent having a proximal end portion, a distal end portion, and a lumen; a push wire extending through the lumen; a first retaining polymer (a) in direct contact with the push wire and (b) disposed about and retaining the proximal end portion in a compressed configuration; a second retaining polymer (a) in direct contact with the push wire and (b) disposed about and retaining the distal end portion in a compressed configuration; a first resistance member in thermal communication with the first retaining polymer; and a second resistance member in thermal communication with the second retaining polymer; wherein the second retaining polymer is releasable from the stent independently of release of the first retaining polymer from the stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of delivering a stent, the method comprising:
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introducing a stent delivery device via a catheter to a desired treatment location in a subject, the stent delivery device comprising; a first retaining polymer (a) in direct contact with a push wire and (b) disposed about and retaining a proximal end portion of a self-expanding stent when the stent is in a compressed configuration; a second retaining polymer (a) in direct contact with the push wire and (b) disposed about and retaining a distal end portion of the self-expanding stent in the compressed configuration; a first resistance member in thermal communication with the first retaining polymer; and a second resistance member in thermal communication with the second retaining polymer; wherein the second retaining polymer and the second resistance member are configured to permit expansion of the distal end portion of the self-expanding stent to an expanded configuration without expansion of the proximal end portion of the self-expanding stent; applying a current to the second resistance member to release and expand the distal end portion. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification