Methods and apparatus for luminal stenting
First Claim
Patent Images
1. A stent delivery device comprising:
- a self-expanding stent having an expanded configuration and a compressed configuration;
a push wire;
a first retaining polymer attached directly to and directly contacting the push wire and disposed about and retaining a proximal end portion of the self-expanding stent in the compressed configuration;
a second retaining polymer attached directly to and directly contacting the push wire and 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.
3 Assignments
0 Petitions
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
23 Claims
-
1. A stent delivery device comprising:
-
a self-expanding stent having an expanded configuration and a compressed configuration; a push wire; a first retaining polymer attached directly to and directly contacting the push wire and disposed about and retaining a proximal end portion of the self-expanding stent in the compressed configuration; a second retaining polymer attached directly to and directly contacting the push wire and 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. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A system for stent delivery comprising:
-
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 push wire is in electrical communication with the first resistance member and the second resistance member to deliver a current to the first resistance member and the second resistance member, wherein each of the first retaining polymer and the second retaining polymer is configured to disengage from the stent in response to different levels of applied current, thereby permitting expansion of the respective proximal and distal end portions to an expanded configuration. - View Dependent Claims (8, 9, 10, 11, 12, 13)
-
-
14. A method of delivering a stent comprising:
-
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; using the push wire to guide the stent delivery device through the catheter; and applying a current via the push wire to the second resistance member to release and expand the distal end portion. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
-
Specification