Everting stent and stent delivery system
First Claim
Patent Images
1. A stent delivery assembly comprising:
- a microcatheter having a distal region, a proximal region, and a lumen that extends from the proximal region through the distal region;
a delivery tube having a lumen and a distal end, the delivery tube extending within the microcatheter lumen;
a stent having a first end, a second end, an intermediate region disposed between the first end and the second end, and a lumen extending from the first end to the second end, the first end being (i) disposed within the delivery tube lumen and (ii) constrained by the delivery tube from radially expanding beyond a delivery tube lumen diameter, the second end being (i) disposed outside of the delivery tube distal end and (ii) substantially radially unconstrained by the delivery tube to expand beyond the delivery tube lumen diameter; and
an elongate release member having a distal portion and extending within the delivery tube lumen and the stent lumen, the distal portion being moveable between a first position, in which the distal portion and the delivery tube collectively engage the stent first end to fix the stent first end relative to the delivery tube lumen, and a second position, in which the distal portion is moved beyond the delivery tube distal end to release the stent first end.
3 Assignments
0 Petitions
Accused Products
Abstract
A stent delivery assembly is provided that includes a microcatheter, a delivery tube, a stent, and an elongate release member. The stent can have a first end that is (i) disposed within a delivery tube lumen and (ii) constrained by the delivery tube from radially expanding beyond a delivery tube lumen diameter. The stent can have a second end that is (i) disposed outside of a delivery tube distal end and (ii) substantially radially unconstrained by the delivery tube to expand beyond the delivery tube lumen diameter. The elongate release member can be moveable between first and second positions to engage or release the stent.
144 Citations
26 Claims
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1. A stent delivery assembly comprising:
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a microcatheter having a distal region, a proximal region, and a lumen that extends from the proximal region through the distal region; a delivery tube having a lumen and a distal end, the delivery tube extending within the microcatheter lumen; a stent having a first end, a second end, an intermediate region disposed between the first end and the second end, and a lumen extending from the first end to the second end, the first end being (i) disposed within the delivery tube lumen and (ii) constrained by the delivery tube from radially expanding beyond a delivery tube lumen diameter, the second end being (i) disposed outside of the delivery tube distal end and (ii) substantially radially unconstrained by the delivery tube to expand beyond the delivery tube lumen diameter; and an elongate release member having a distal portion and extending within the delivery tube lumen and the stent lumen, the distal portion being moveable between a first position, in which the distal portion and the delivery tube collectively engage the stent first end to fix the stent first end relative to the delivery tube lumen, and a second position, in which the distal portion is moved beyond the delivery tube distal end to release the stent first end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for delivering a tubular stent to a target vessel region, the method comprising the steps of:
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providing a stent having a first end and a second end; providing a microcatheter having a distal region, a proximal region, and a lumen that extends from the proximal region through the distal region; providing a delivery tube having a lumen and a distal end, the delivery tube extending within the microcatheter lumen, wherein the stent first end is disposed within the delivery tube lumen such that the delivery tube constrains the stent first end from radially expanding, and the stent second end is disposed outside of the delivery tube distal end such that the stent second end is substantially radially unconstrained by the delivery tube; providing an elongate release member having a distal portion extending within the delivery tube lumen, the distal portion having a first position, in which the distal portion and the delivery tube engage the stent first end to fix the stent first end relative to the delivery tube distal end; advancing the stent, the microcatheter, the delivery tube, and the release member distally to a location near the target vessel region; and moving the release member to a second position to release the stent first end. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A stent delivery assembly, the assembly comprising:
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a microcatheter having a distal region, a proximal region, and a lumen that extends from the proximal region through the distal region; a delivery tube having a lumen, a lumen diameter, and a distal end, the delivery tube extending within the microcatheter lumen; a release member positioned within the lumen of the delivery tube; and a stent having a first end and a second end, the first end being disposed within the delivery tube distal end and grasped between the delivery tube and the release member, the second end being disposed outside of the delivery tube distal end and substantially radially unconstrained by the delivery tube to expand to a diameter greater than the delivery tube lumen diameter. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification