IP Library › Granted Patent US 12,569,252
Granted Patent B2
US 12,569,252 · App. 18/505,645 · Granted Mar 10, 2026

Systems and methods for treating aneurysms

Inventors: Junwei Li (Irvine, CA); Mark Ashby (Laguna Niguel, CA); Hoai Nguyen (Westminster, CA)
Assignee: COVIDIEN LP
A61B17/12113A61B17/12031A61B17/1214A61B17/12145A61B17/12172A61B17/12186A61B2017/00526A61B2017/00557A61B2017/00862A61B2017/00929A61B2017/12054A61B2017/12063A61B17/12168A61B2090/376A61B2090/3966B23P19/047
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Quick Facts
Patent No.
US 12,569,252
App. No.
18/505,645
Granted
Mar 10, 2026
Kind
B2
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.

Claims (29)

1 . 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.

2 . The treatment system of claim 1 , wherein the conduit comprises a flexible tubular member.

3 . The treatment system of claim 1 , wherein the conduit comprises a hypotube.

4 . The treatment system of claim 1 , wherein the core member comprises an elongated tubular member.

5 . The treatment system of claim 1 , wherein the conduit distal end extends to or distal to a distal end of the occlusive member.

6 . The treatment system of claim 1 , wherein the core member comprises a proximal insulating layer annularly contacting the proximal portion of the core member and a distal insulating layer annularly contacting the distal portion of the core member.

7 . The treatment system of claim 1 , wherein the embolic element is a liquid embolic.

8 . 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.

9 . The treatment system of claim 8 , wherein the conduit lumen is defined by a conduit extending alongside at least a portion of the core member, the conduit having a distal end configured to extend distal to a distal end of the occlusive member.

10 . The treatment system of claim 8 , wherein the detachment zone comprises a portion of the core member configured to be severed via electrolytic corrosion.

11 . The treatment system of claim 8 , wherein the core member comprises an elongate tubular shaft.

12 . The treatment system of claim 11 , wherein the conduit lumen extends through the elongate tubular shaft.

13 . The treatment system of claim 8 , wherein the conduit lumen is configured to pass the embolic element through the core member.

14 . The treatment system of claim 8 , wherein the embolic element is a liquid embolic.

15 . 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.

16 . The treatment system of claim 15 , wherein the detachment zone comprises a portion of the tubular member configured to be severed via electrolytic corrosion.

17 . The treatment system of claim 15 , wherein the conduit comprises a flexible tubular member.

18 . The treatment system of claim 15 , wherein the conduit comprises a hypotube.

19 . The treatment system of claim 15 , wherein the conduit distal end extends to a distal end of the occlusive member.

20 . The treatment system of claim 15 , wherein the embolic element is a liquid embolic.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 15, 2024
From: LI, JUNWEI; ASHBY, MARK; NGUYEN, HOAI
To: COVIDIEN LP
Reel/Frame 066470/0167 →
Continuity (8)
Continuation 16949561 · Nov 3, 2020
Provisional Application 62930303 · Nov 4, 2019
Provisional Application 62930357 · Nov 4, 2019
Provisional Application 62930487 · Nov 4, 2019
Provisional Application 62930333 · Nov 4, 2019
Provisional Application 62930421 · Nov 4, 2019
Provisional Application 62930324 · Nov 4, 2019
Related Publication 20240075565A1 · Mar 7, 2024
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