Removable occlusion system for aneurysm neck

• US 6,344,048 B1
• Filed: 04/28/1999
• Issued: 02/05/2002
• Est. Priority Date: 07/10/1997
• Status: Expired due to Term

• Current Assignee: Stryker European Operations Holdings, LLC (Stryker Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Chin, Yem, Hudson, Richard, Tremaglio, Anthony R. Jr., McCrory, Jennifer J.
• Primary Examiner(s): Reip, David O.
• Assistant Examiner(s): Woo, Julian W.
• Application Number:
  US09/301,084
• Time in Patent Office: 1,014 Days
• Field of Search: 606/200, 606/194, 606/159, 604/107, 604/95, 604/104
• US Class Current: 606/200
• CPC Class Codes: A61B 17/0057 Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 17/12036 partial occlusion
• CPC Class Codes: A61B 17/1204 temporary occlusion
• CPC Class Codes: A61B 17/12113 within an aneurysm
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 17/12186 liquid materials adapted to be injected
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/1205 Introduction devices
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers

Abstract

A system for treating an aneurysm in a vessel includes a delivery device having a delivery portion suitable for delivery of embolic material. The delivery device is placed in a neck of the aneurysm and an expandable member is placed proximate the neck. The expandable member is expanded to overlie substantially the entire neck. Embolic material is delivered to the aneurysm with a delivery device. The expandable member is held over the neck to inhibit movement of the embolic material out of the aneurysm. Blood is allowed to flow out of the aneurysm, past the neck of the aneurysm, and through the vessel while the expandable member is held over the neck of the aneurysm.

Claims

1. A system for treating an aneurysm in a vessel, the aneurysm having a mouth communicating with the vessel, the system comprising:

a first elongate tubular member including a first lumen extending therealong;

a second elongate tubular member including a second lumen extending therealong and slidably disposed in the first lumen of the first elongate tubular member and longitudinally movable relative to the first elongate tubular member;

a shield member having opposed first and second ends, the first end being coupled to the first elongate tubular member and the second end being coupled to the second elongate tubular member and the shield member operable between a first collapsed profile coaxially aligned with the first and second elongate tubular members and a second profile in response to longitudinal movement of the first and second elongate tubular members relative to one another, in the second profile, the shield member is angled relative to the longitudinal axis of the first and second elongate tubular members and the shield member including an inner layer and an outer layer covering the inner layer and expandable therewith, the inner layer forming a plurality of interspacial openings in the second profile and the outer layer being pervious to fluids; and

wherein the shield member is configured in the second profile to cover the mouth of the aneurysm and the inner and outer layers inhibiting embolic material from moving out of the aneurysm into the vessel, and allowing blood to flow through the vessel and to flow out of the aneurysm during delivery of the embolic material into the aneurysm.

2. The system of claim 1 wherein the inner layer is formed of a mesh material.

3. The system of claim 2 wherein the mesh material is formed of one of radiopaque metal strands, or a polymer material.

4. The system of claim 2 wherein the outer layer is formed of a perforated elastomeric sheath.

5. The system of claim 1 wherein the outer layer is formed of a woven material.

6. The system of claim 1 wherein the inner layer is formed of a plurality of struts.

7. The system of claim 6 wherein the plurality of struts of include a proximal and distal portion along a length thereof, the distal portion having a larger surface area than the proximal portion for inhibiting fluid flow.

8. The system of claim 1 wherein the inner and outer layers include a plurality of struts.

9. The system of claim 8 wherein the inner and outer layers are formed of inner and outer collapsible tube portions forming the plurality of struts of the inner and outer layers.

10. The system of claim 9 and further comprising a micro catheter deployable to insert embolic material into the aneurysm having the mouth covered by the shield member.

11. A device for treating an aneurysm comprising:

a first elongated member having a proximal and distal end;

a second elongated member coaxially aligned with and slidable relative to the first elongated member and having a proximal and distal end;

a shield member having a first portion coupled proximate to the distal end of the first member and a second portion coupled proximate to the distal end of the second member and, the shield member being operable between a first collapsed profile coaxially aligned with the first and second members and a second profile angled relative to the longitudinal axis of the first and second members, the shield member being actuated between the first collapsed profile and the second profile via slidable movement of the first and second members, in the second profile, the shield member being configured to cover a mouth of an aneurysm and the shield member including an inner layer and an outer layer covering the inner layer and expandable therewith and the inner layer forming a plurality of interspacial openings in the second profile and the outer layer being pervious to fluids to permit blood flow through the shield member; and

an embolic delivery lumen adapted to extend through a mouth of an aneurysm covered by the shield member in the second profile for inserting an embolic material into an aneurysm.

12. The device of claim 11 wherein the first member is a tubular member and the embolic delivery lumen is formed through a center conduit of the tubular member.

13. The device of claim 11 wherein the embolic delivery lumen is formed through a tubular member coaxially inserted with the first and second members.

14. The device of claim 11 wherein the inner layer is formed of a mesh material.

15. The device of claim 14 wherein the mesh material forms a concave shape in the second profile to cover a mouth of an aneurysm.

16. The device of claim 14 wherein the mesh material forms a relatively flat shape in the second profile to cover a mouth of an aneurysm.

17. The device of claim 14 wherein the mesh is formed of woven strands of polymer material filled with a radiopaque material.

18. The device of claim 14 wherein the mesh is formed of braided metal and polymer strands.