Endoprosthesis deployment system for treating vascular bifurcations
First Claim
Patent Images
1. A deployment system for treating a bifurcation of a main vessel and a first and second branch vessels, comprising:
- an elongate, flexible body, having a proximal end, a distal end, a guidewire lumen, and a control element lumen;
a first stent carried in a recess on the distal end of the body, the first stent comprising a marker at a proximal end of the stent;
a stent stop located proximal to the recess comprising a slot configured to receive the proximal marker;
and a releasable restraint, for retaining the stent on the flexible body;
wherein the releasable restraint is coupled to an axially moveable control element such that moving the axially moveable control element in a proximal direction with respect to the first stent causes the releasable restraint to move in the proximal direction with respect to the first stent, wherein the axially moveable control element extends at least partially within the control element lumen in the elongate, flexible body, and wherein the guidewire lumen is located outside of the control element lumen;
wherein a proximal end of the releasable restraint is configured to surround a portion of the control element lumen and move independently relative to the surrounded portion of the control element lumen as the releasable restraint is moved in the proximal direction;
wherein a distal end of the stent is larger in diameter than the proximal end of the stent in an unconstrained expanded configuration; and
wherein at least a portion of the expanded stent tapers in a distal direction from a smaller proximal diameter to a larger distal diameter, the stent is not covered, andthe stent is configured to be unattached to another stent or stent segment when deployed in an unconstrained expanded configuration at the bifurcation.
2 Assignments
0 Petitions
Accused Products
Abstract
A device and method for treating pathological narrowing of fluid-carrying conduits of the human body (such as blood vessels) in an area of a bifurcation is disclosed. In particular, a stent delivery system configured to carry one or more of a pair of dissimilar stents. At least one of the stents is particularly suited for treating a widened portion of a blood vessel immediately proximal to a bifurcation. The stent delivery system can also include a handpiece adapted to selectively deliver the stents.
279 Citations
20 Claims
-
1. A deployment system for treating a bifurcation of a main vessel and a first and second branch vessels, comprising:
-
an elongate, flexible body, having a proximal end, a distal end, a guidewire lumen, and a control element lumen; a first stent carried in a recess on the distal end of the body, the first stent comprising a marker at a proximal end of the stent; a stent stop located proximal to the recess comprising a slot configured to receive the proximal marker; and a releasable restraint, for retaining the stent on the flexible body; wherein the releasable restraint is coupled to an axially moveable control element such that moving the axially moveable control element in a proximal direction with respect to the first stent causes the releasable restraint to move in the proximal direction with respect to the first stent, wherein the axially moveable control element extends at least partially within the control element lumen in the elongate, flexible body, and wherein the guidewire lumen is located outside of the control element lumen; wherein a proximal end of the releasable restraint is configured to surround a portion of the control element lumen and move independently relative to the surrounded portion of the control element lumen as the releasable restraint is moved in the proximal direction; wherein a distal end of the stent is larger in diameter than the proximal end of the stent in an unconstrained expanded configuration; and wherein at least a portion of the expanded stent tapers in a distal direction from a smaller proximal diameter to a larger distal diameter, the stent is not covered, and the stent is configured to be unattached to another stent or stent segment when deployed in an unconstrained expanded configuration at the bifurcation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification