Minimally occlusive flow disruptor stent for bridging aneurysm necks

• US 6,139,564 A
• Filed: 06/16/1998
• Issued: 10/31/2000
• Est. Priority Date: 06/16/1998
• Status: Expired due to Term

• Current Assignee: Stryker European Operations Holdings, LLC (Stryker Corporation)
• Original Assignee: Target Therapeutics, Inc. (Boston Scientific Corporation)
• Inventors: Teoh, Clifford
• Primary Examiner(s): Jackson, Gary
• Application Number:
  US09/098,124
• Time in Patent Office: 868 Days
• Field of Search: 606/139, 606/151, 606/213, 606/191, 623/11, 623/12
• US Class Current: 606/213
• 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 17/12113 within an aneurysm
• CPC Class Codes: A61B 17/12131 characterised by the type of occluding device
• CPC Class Codes: A61B 2017/12063 electrolytically detachable
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2002/823 Stents, different from stent-grafts, adapted to cover an aneurysm

Abstract

This is a device for bridging the neck of a wide-necked or narrow-necked aneurysm in the vasculature. In general, it is a device used to stabilize aneurysms found in the vasculature by at least partially closing the opening to that aneurysm with consequent limiting of the amount of blood flowing into and out of the chamber. The device is generally made of a metallic or polymeric sheet and is of a shape which may be deployed using a catheter. The device typically has three major components: the central closure area, the centrifugal stabilizers, and the axial stabilizers. The device is intended to be a permanent implant and may be used with or without occlusive devices and materials placed inside the aneurysm volume.

Claims

1. An aneurysm closure device deliverable through the vasculature comprising a single-piece sheet having a generally central closure region sized to cover at least most of an opening in a selected vascular aneurysm, at least two circumferential struts extending in generally opposite directions from said closure region, and at least two longitudinal struts extending in generally opposite directions from said closure region, generally orthogonal to said circumferential struts, and together of a length sufficient to stabilize said aneurysm closure device from movement when positioned to cover said at least most of an opening in a vascular aneurysm in cooperation with said circumferential struts.

2. The aneurysm closure device of claim 1 wherein said sheet is metallic.

3. The aneurysm closure device of claim 1 wherein said sheet is polymeric.

4. The aneurysm closure device of claim 2 wherein said metallic sheet comprises a superelastic alloy.

5. The aneurysm closure device of claim 4 wherein said superelastic alloy is an Ni/Ti alloy.

6. The aneurysm closure device of claim 2 wherein said metallic sheet comprises a stainless steel alloy.

7. The aneurysm closure device of claim 1 wherein said at least two circumferential struts together are of a length sufficient to overlap some but not all of a circumference of a vascular lumen outside said aneurysm when said aneurysm closure device is positioned to cover said at least most of an opening in a vascular aneurysm.

8. The aneurysm closure device of claim 1 wherein said generally central closure region is sized to cover all of an opening in a selected vascular aneurysm.

9. The aneurysm closure device of claim 1 further comprising one or more vaso-occlusive devices.

10. The aneurysm closure device of claim 1 wherein said sheet comprises a composite of polymers and polymeric fibers.

11. The aneurysm closure device of claim 1 wherein said sheet comprises a composite of polymers and metallic fibers.