Endovascular aneurysm embolization device

• US 6,613,074 B1
• Filed: 03/03/2000
• Issued: 09/02/2003
• Est. Priority Date: 03/10/1999
• Status: Expired due to Term

• Current Assignee: Codman & Shurtleff Incorporated (Johnson & Johnson)
• Original Assignee: Cordis Corporation (Cardinal Health, Inc.)
• Inventors: Martinez, Susana, Mitelberg, Vladimir
• Primary Examiner(s): Snow, Bruce
• Assistant Examiner(s): Pellegrino, Brian E
• Application Number:
  US09/518,398
• Time in Patent Office: 1,278 Days
• Field of Search: 623/1.11, 623/1.13, 606/191, 606/200, 606/198, 606/108
• US Class Current: 623/1.11
• 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 17/12118 for positioning in conjunction with a stent
• CPC Class Codes: A61B 17/1219 expandable in contact with liquids
• CPC Class Codes: A61B 2017/1205 Introduction devices
• CPC Class Codes: A61F 2002/823 Stents, different from stent-grafts, adapted to cover an aneurysm

Abstract

The present invention relates to a medical device for placement at a predetermined location within a vessel of the human body, and more particularly, relates to a collapsible aneurysm embolization device that is delivered through the lumen of a catheter and exits the catheter at a predetermined position within the vessel to thereby embolize a blood vessel defect, such as an aneurysm.

Claims

1. An aneurysm embolization system for treating a blood vessel defect comprising:

a catheter having proximal and distal ends and a lumen extending therethrough;

a push rod slidably disposed within the lumen of the catheter; and

,

a collapsible aneurysm embolization device comprised of a stabilizing member and an occluding member;

said stabilizing member comprises a resilient wire which when released takes the form of a generally circular configuration for stabilizing the embolization device within a blood vessel;

said occluding member comprises a resilient wire scaffold which when released extends around only a portion of the interior circumference of a blood vessel and forms a configuration adapted to extend across an opening of an aneurysm to thereby embolize the aneurysm, said occluding member is attached to the stabilizing member; and

,

said aneurysm embolization device being collapsed and slidably disposed within the lumen at the distal end of the catheter whereby movement of the push rod distally against the aneurysm embolization device causes the aneurysm embolization device to exit the lumen of the catheter and to expand into position within the blood vessel.

2. The aneurysm embolization system as defined in claim 1, wherein the stabilizing member and the occluding member of said aneurysm embolization device are formed of a nickel titanium alloy.

3. The aneurysm embolization system as defined in claim 2, wherein the stabilizing member and the occluding member of said aneurysm embolization device are comprised of radiopaque material.

4. The aneurysm embolization device as defined in claim 1, wherein the occluding member is formed of a mesh capable of producing thrombus in the aneurysm.

5. An aneurysm embolization system for treating a blood vessel defect comprising:

a catheter having proximal and distal ends and a lumen extending therethrough;

a push rod slidably disposed within the lumen of the catheter; and

,

a collapsible aneurysm embolization device comprising a first stabilizing member, a second stabilizing member and an occluding member;

said first stabilizing member comprises a resilient wire which when released takes the form of a generally circular configuration for stabilizing the embolization device within a blood vessel;

said second stabilizing member comprises a resilient wire which when released takes the form of a generally circular configuration for stabilizing the embolization device within a blood vessel;

said occluding member comprises a resilient wire scaffold which when released extends around only a portion of the interior circumference of a blood vessel and forms a configuration adapted to extend across the opening of an aneurysm to thereby embolize the aneurysm, said occluding member is attached distally to the first stabilizing member and attached proximally to the second stabilizing member; and

,

said aneurysm embolization device being collapsed and slidably disposed within the lumen of the catheter whereby movement of the push rod distally against the aneurysm embolization device causes the aneurysm embolization device to exit the lumen of the catheter and to expand into position within the blood vessel.

6. The aneurysm embolization system as defined in claim 5, wherein the first and second stabilizing members and the occluding member of said aneurysm embolization device are formed of a nickel titanium alloy.

7. The aneurysm embolization system as defined in claim 6, wherein said aneurysm embolization device, wherein the first and second stabilizing members and the occluding member of said aneurysm embolization device are comprised of radiopaque material.

8. The aneurysm embolization device as defined in claim 5, wherein the occluding member is formed of a mesh capable of producing thrombus in the aneurysm.

9. An aneurysm embolization system for treating a blood vessel defect comprising:

a catheter having proximal and distal ends and a lumen extending therethrough;

a push rod slidably positioned within the lumen of the catheter; and

a collapsible aneurysm embolization device comprising a stabilizing member and an occluding member;

said stabilizing member takes the form of a resilient wire which when released forms a generally circular configuration for stabilizing the embolization device within a blood vessel;

said occluding member comprises a wire scaffold having a cover attached to said wire scaffold, said occluding member with said cover when released, extends around only a portion of the interior circumference of a blood vessel and forms a configuration adapted to extend across the neck of an aneurysm, said occluding member is attached to said stabilizing member; and

,

said aneurysm embolization device being collapsed and slidably disposed within the lumen of the catheter whereby movement of the push rod distally against the aneurysm embolization device causes the aneurysm embolization device to exit the lumen of the catheter and to expand into the blood vessel.

10. The aneurysm embolization system as defined in claim 9, wherein said cover takes the form of a fabric mesh.

11. The aneurysm embolization system as defined in claim 10, wherein said cover takes the form of a permeable membrane.

12. The aneurysm embolization system as defined in claim 11, wherein said cover comprises a radiopaque material.

13. The aneurysm embolization device as defined in claim 11, wherein said cover comprises an expandable foam.

14. An aneurysm embolization system for treating a blood vessel defect comprising:

a catheter having proximal and distal ends and a lumen extending therethrough;

a push rod slidably positioned within the lumen of the catheter; and

,

a collapsible aneurysm embolization device comprising a first stabilizing member, a second stabilizing member and an occluding member;

said first stabilizing member comprises a resilient wire which when released takes the form of a generally circular configuration for stabilizing the embolization device within a blood vessel;

said second stabilizing member comprises a resilient wire which when released takes the form of a generally circular configuration for stabilizing the embolization device within a blood vessel;

said occluding member comprises a wire scaffold having proximal and distal ends and a cover attached to said wire scaffold, said occluding member with said cover when released, extends around only a portion of the interior circumference of a blood vessel and forms a configuration adapted to extend across the neck of an aneurysm, said occluding member is attached at its distal end to the first stabilizing member and attached at its proximal end to the second stabilizing member; and

,

said aneurysm embolization device being collapsed and slidably disposed within the lumen of the catheter whereby movement of the push rod distally against the aneurysm embolization device causes the aneurysm embolization device to exit the lumen of the catheter and to expand into the blood vessel.

15. The aneurysm embolization system as defined in claim 14, wherein said cover takes the form of a fabric mesh.

16. The aneurysm embolization system as defined in claim 15, wherein said cover takes the form of a permeable membrane.

17. The aneurysm embolization system as defined in claim 16, wherein said cover comprises a radiopaque material.

18. The aneurysm embolization device as defined in claim 14, wherein said cover comprises an expandable foam.

19. An aneurysm embolization device for treating a blood vessel defect comprising:

a catheter having proximal and distal ends and a lumen extending therethrough;

a collapsible aneurysm embolization device which takes the form of a cylinder with a substantial portion of the cylinder removed which comprises;

a first stabilizing member when released forms a generally circular configuration for stabilizing the embolization device within a blood vessel;

a second stabilizing member when released forms a generally circular configuration for stabilizing the embolization device within a blood vessel; and

,

an occluding member takes the form of a scaffold having a cover and when released said occluding member with said cover extends around only a portion of the interior circumference of a blood vessel and forms a configuration adapted to extend across an opening of an aneurysm.

20. The aneurysm embolization system as defined in claim 19, wherein said cover takes the form of a fabric mesh.

21. The aneurysm embolization system as defined in claim 20, wherein said cover takes the form of a permeable membrane.

22. The aneurysm embolization system as defined in claim 21, wherein said cover comprises a radiopaque material.

23. The aneurysm embolization device as defined in claim 19, wherein said cover comprises an expandable foam.