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US 12,569,252 B2Granted
Systems and methods for treating aneurysms
AssigneeCovidien LP
InventorsJunwei Li, Mark Ashby, Hoai Nguyen
Life of this patent
Estimating the term…
Abstract
Treatment of aneurysms can be improved by delivering an occlusive member (e.g., an expandable braid) to an aneurysm sac in conjunction with an embolic element (e.g., coils, embolic material). A treatment system for such treatment can include an electrolytically corrodible core wire having a proximal portion, a distal portion, and a detachment zone between the proximal portion and the distal portion. An occlusive member having a proximal hub is coupled to the core wire distal portion. A conduit extends along at least a portion of the core wire. The conduit has a lumen configured to pass an embolic element therethrough.
Claims20
A treatment system comprising:
- an electrolytically corrodible core member having a proximal portion, a distal portion, and a detachment zone between the proximal portion and the distal portion;
- an occlusive member having a proximal hub coupled to the core member distal portion, the occlusive member having:
- (1) a constrained state for delivery to an aneurysm;
- (2) a first expanded state in which at least a portion of the occlusive member is configured to be disposed across a neck of the aneurysm, and (3) a second expanded state in which an embolic element disposed between a distal face of the occlusive member and a wall of the aneurysm causes a sidewall of a portion of the occlusive member to invert such that the portion of the occlusive member is convex towards the aneurysm wall in the first expanded state and concave towards the aneurysm wall in the second expanded state;
- and
- a conduit extending along at least a portion of the core member, the conduit having a distal portion configured to be disposed within the aneurysm along with the occlusive member, the conduit having a lumen configured to pass the embolic element therethrough.
3 more elements
A treatment system comprising:
- a core member having a proximal portion, a distal portion, and a detachment zone between the proximal portion and the distal portion;
- an occlusive member having a proximal hub coupled to the core member distal portion, the occlusive member having a constrained state for delivery to an aneurysm and an expanded state in which at least a portion of the occlusive member is configured to be disposed across a neck of the aneurysm while an embolic element is disposed between a distal face of the occlusive member and a wall of the aneurysm, wherein the occlusive member has a first internal volume in the expanded state in which a portion of the occlusive member is convex towards a wall of the aneurysm and the occlusive member is configured to at least partially collapse when contacted by the embolic element, thereby reducing the internal volume from the first internal volume to a second internal volume in which the portion of the occlusive member is concave towards the aneurysm wall;
- and
- a conduit lumen extending along at least a portion of the core member and configured to pass the embolic element therethrough to within the aneurysm, the conduit lumen having a distal end configured to be disposed within the aneurysm concurrently with the occlusive member.
1 more element
A treatment system comprising:
- an elongate tubular member having a proximal portion, a distal portion, and a detachment zone between the proximal portion and the distal portion;
- an occlusive member having a proximal hub coupled to the tubular member distal portion, the occlusive member having a constrained state for delivery to an aneurysm and an expanded state in which at least a portion of the occlusive member is configured to be disposed across a neck of the aneurysm while an embolic element is disposed between a distal face of the occlusive member and a wall of the aneurysm, wherein the occlusive member has a first internal volume in the expanded state in which a portion of the occlusive member is convex towards a wall of the aneurysm and the occlusive member is configured to at least partially collapse when contacted by the embolic element, thereby reducing the internal volume from the first internal volume to a second internal volume in which the portion of the occlusive member is concave towards the aneurysm wall;
- and
- a conduit extending through the elongate tubular member and defining a conduit lumen configured to pass the embolic element therethrough to within the aneurysm, the conduit lumen having a distal end configured to be in fluid communication with the aneurysm while the occlusive member is disposed within the aneurysm.
1 more element
Dependencies are inferred from the claim text.