Removable occlusion system for aneurysm neck

• US 20050021077A1
• Filed: 08/20/2004
• Published: 01/27/2005
• Est. Priority Date: 07/10/1997
• Status: Active Grant

• Current Assignee: Stryker European Operations Holdings, LLC (Stryker Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: McCrory, Jennifer J., Chin, Yem, Hudson, Richard, Tremaglio, Anthony R. Jr.
• Granted Patent: US 7,229,461 B2
• Time in Patent Office: Days
• 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
• 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 medical device comprising:

a first elongate tubular body;

a second elongate tubular body slidably disposed in a lumen of the first elongate tubular body; and

a shield formed of a plurality of non-woven elongate struts and the plurality of elongate struts having a first end coupled to the first elongate tubular body and a second end coupled to the second elongate tubular body and expandable from an elongate profile to a radially expanded profile upon slidable movement of the second elongate tubular body relative to the first elongate tubular body.

2. The medical device of claim 1 wherein the plurality of elongate struts have variable dimensions.

3. The medical device of claim 1 wherein the plurality of elongate struts have a variable cross-sectional dimension.

4. The medical device of claim 1 wherein elongate struts of the plurality of elongate struts have a variable length dimension between the first and second ends thereof.

5. The medical device of claim 1 wherein the plurality of elongate struts include a plurality of perforations.

6. The medical device of claim 1 wherein the plurality of elongate struts are formed of one of flat strip or of elongate wires or filaments.

7. The medical device of claim 1 wherein the plurality of elongate struts include a plurality of inner struts and a plurality of outer struts about an outer circumference of the first and second tubular bodies.

8. The medical device of claim 1 wherein the first and second tubular bodies are rotatable relative to one another.

9. The medical device of claim 1 wherein the plurality of struts are formed by a plurality of slits or notches formed in a tubular body coupled to the first and second elongate tubular bodies.

10. The medical device of claim 1 wherein the plurality of non-woven elongate struts form an inner layer and the sheath includes an outer layer formed of a perforated elastomeric sheath.

11. The medical device of claim 1 wherein the second ends of the plurality of elongate struts are coupled to the second elongate body at a location radially offset from the coupling between the first ends of the plurality of elongate struts and the first elongate tubular body.

12. A medical device comprising:

a first elongate body;

a second elongate body slidably disposed relative to the first elongate body; and

a shield including a plurality of elongate struts having a first end coupled to the first elongate body and a second end coupled to the second elongate body and the plurality of elongate struts having different length dimensions between the first ends and the second ends.

13. The medical device of claim 12 wherein the second elongate body is slidable disposed a lumen of the first elongate body.

14. The medical device of claim 12 wherein the first and second elongate bodies are formed of a tubular body having an inner lumen.

15. The medical device of claim 12 wherein the first and second elongate bodies are coaxially aligned and rotatable relative to one another.

16. The medical device of claim 12 wherein the plurality of elongate struts are formed of one of flat strips or of elongate wires or filaments.

17. A medical device comprising:

a first elongate body;

a second elongate body slidably disposed relative to the first elongate body; and

a shield including a plurality of elongate struts having a first end coupled to the first elongate body and a second end coupled to the second elongate body and the plurality of elongate struts having a variable cross-sectional shape.

18. The medical device of 17 wherein the variable cross-sectioned shape provides a smaller cross-sectional area proximate to the first ends of the plurality of elongate struts and a larger cross-sectional area proximate to the second ends of the plurality of elongate struts.

19. A medical device comprising:

a first elongate body;

a second elongate body slidably disposed relative to the first elongate body; and

a shield including a plurality of elongate struts having a first end coupled to the first elongate body and a second end coupled to the second elongate body and the plurality of elongate struts having a plurality of perforations along a portion of a length thereof between the first and second ends.

20. A medical device comprising:

a first elongate body;

a second elongate body slidably disposed relative to the first elongate member; and

a tubular body having a first end coupled to the first elongate body and a second end coupled to the second elongate body and expandable from an elongate profile to a radially expanded profile upon slidable movement of the first and second elongate bodies and the tubular body including a plurality of elongate slits or notches therealong forming a plurality of elongate struts.

21. The medical device of claim 20 wherein the slits or notches are angled so that the plurality of elongate struts are angled relative to the first and second elongate bodies.

22. The medical device of claim 20 wherein the first and second elongate bodies are tubular and the second elongate body is slidably disposed in a lumen of the first elongate body.

23. The medical device of claim 20 wherein the plurality of elongate struts include a plurality of perforations.

24. The medical device of claim 20 wherein the first and second elongate bodies are rotatable relative to one another.

25. A medical device comprising:

a first elongate body;

a second elongate body slidably disposed relative to the first elongate body; and

a shield including a plurality of elongate strands having a first end coupled to the second elongate body about a circumference of the second elongate body and the plurality of elongate strands having a constrained profile and a radially expanded profile and in the radially expanded profile the plurality of elongate strands curving outwardly from the first ends of the plurality of elongate strands to outwardly curved cantilevered ends of the plurality of elongate strands.

26. The medical device of claim 25 wherein the second elongate body is slidable in a lumen of the first elongate body and the plurality of elongate strands are biased in the constrained profile via the first elongate body

27. The medical device of claim 25 wherein the plurality of elongate strands are formed of nylon, teflon, polypropylene, nitinol or stainless steel material.

28. The medical device of claim 25 wherein the plurality of elongate strands extend about an outer circumference of the second elongate body.