System and method for delivering and deploying an occluding device within a vessel

• US 20060271149A1
• Filed: 05/25/2005
• Published: 11/30/2006
• Est. Priority Date: 05/25/2005
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Chestnut Medical Technologies, Inc. (Medtronic Plc)
• Inventors: Tran, Quang Quoc, Berez, Aaron Lee
• Granted Patent: US 8,147,534 B2
• Time in Patent Office: Days
• US Class Current: 623/1.110
• 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 2017/1205 Introduction devices
• CPC Class Codes: A61B 2017/12054 Details concerning the detachment of the occluding device from the introduction device
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/9662 the middle portion of the stent or stent-graft is released first
• CPC Class Codes: A61F 2002/823 Stents, different from stent-grafts, adapted to cover an aneurysm
• CPC Class Codes: A61F 2002/9665 with additional retaining means

Abstract

A system and method for deploying an occluding device that can be used to remodel an aneurysm within the vessel by, for example, neck reconstruction or balloon remodeling. The system comprises an introduer sheath and an assembly for carrying the occluding device. The assembly includes an elongated flexible member having an occluding device retaining member for receiving a first end of the occluding device, a proximally positioned retaining member for engaging a second end of the occluding device and a support surrounding a portion of the elongated flexible member over which the occluding device can be positioned.

Claims

1. A system for supporting and deploying an occluding device, said system comprising an introducer sheath and an assembly for carrying the occluding device, said assembly comprising an elongated flexible member having an occluding device retaining member for receiving a first end of the occluding device, a proximally positioned retaining member for engaging a second end of the occluding device and a support extending along a portion of the elongated flexible member and having an outer surface for engaging an inner surface of said occluding device, said occluding device being movable relative to said support.

2. The system according to claim 1 wherein said elongated flexible member includes a guidewire having a flexible atraumatic tip.

3. The system according to claim 2 wherein said guidewire is movable relative to said introducer sheath.

4. The system according to claim 3 wherein said guidewire has at least two sections having different diameters.

5. The system according to claim 3 wherein said guidewire has sections of differing flexions.

6. The system according to claim 1 wherein said support surrounds a portion of said elongated flexible member.

7. The system according to claim 1 wherein said proximally positioned retaining member includes a biasing member that urges the occluding device toward a distal end of the flexible member when the occluding device is positioned on said support.

8. The system according to claim 1 wherein said proximally positioned retaining member includes a portion of said elongated flexible member.

9. The system according to claim 1 wherein said occluding device retaining member includes an internal opening for receiving the first end of the occluding device.

10. The system according to claim 1 wherein said occluding device retaining member includes a coiled spring.

11. The system according to claim 1 further comprising a catheter into which said assembly and the occluding device can be positioned.

12. The system according to claim 1 wherein said support comprises an elongated coil positioned about a portion of said elongated flexible member.

13. The system according to claim 1 wherein said elongated member includes a flexible guidewire that is rotatable relative to said introducer sheath and the occluding device.

14. The system according to claim 1 wherein the occluding device retaining member has an outer surface that extends farther from an outer surface of said elongated member than an outer surface of said support.

15. The system according to claim 1 wherein said occluding device retaining member includes a portion for protecting the first end of the occluding device.

16. A system for supporting and deploying an occluding device, said system comprising an assembly for carrying the occluding device, said assembly comprises an elongated member including a flexible distal tip portion, a retaining member having a portion for receiving and retaining a first end of the occluding device, and a support extending along a portion of the elongated flexible member and forming an outer support surface for engaging and supporting the occluding device relative to said elongated member such that said occluding device is movable relative to said support.

17. The system according to claim 16 wherein the retaining member has an outer surface that extends farther from an outer surface of said elongated member than an outer surface of said support.

18. The system according to claim 16 further comprising an introducer sheath for carrying said assembly.

19. The system according to claim 16 wherein said elongated member includes a flexible guidewire.

20. The system according to claim 19 wherein said guidewire has at least two sections having different diameters.

21. The system according to claim 19 wherein said guidewire has sections of differing flexions.

22. The system according to claim 16 wherein said distal tip portion includes an atraumatic tip.

23. The system according to claim 16 wherein said retaining member includes an internal recess for receiving and holding the first end of said occluding device prior to deployment of said occluding device.

24. The system according to claim 16 wherein said retaining member includes a coiled spring.

25. The system according to claim 16 further comprising a second retaining member spaced from the first retaining member for engaging a portion of occluding device and urging the occluding device toward the first retaining member.

26. The system according to claim 16 further comprising a catheter into which said assembly and the occluding device can be positioned.

27. The system according to claim 26 wherein said elongated member includes a flexible guidewire that is rotatable relative to said catheter and the occluding device.

28. The system according to claim 16 wherein said support includes a flexible coil that extends over and surrounds a portion of said elongated member.

29. The system according to claim 16 wherein said retaining member includes a portion for protecting the first end of the occluding device.

30. A method for introducing and deploying an occluding device within a vessel, said method comprising:

introducing an elongated sheath including an introducer sheath with a guidewire assembly into a catheter;

advancing said guidewire assembly out of said sheath and into said catheter;

positioning an end of said catheter proximate an aneurysm;

advancing at least a portion of said guidewire assembly out of said catheter;

rotating a portion of said guidewire assembly while deploying said occluding device at the aneurysm.

31. The method according to claim 30 further comprising the step of removing the guidewire assembly from within the catheter.

32. The method according to claim 30 further comprising the step of removing the catheter from within the vessel.

33. The method according to claim 30 further comprising the step of confirming the position of said occluding device prior to deploying said occluding device.

34. The method according to claim 30 further comprising the step of creating friction between an inner surface of said catheter and said occluding device when deploying said occluding device.

35. The method according to claim 30 wherein said step of rotating said guidewire assembly includes the step of separating said occluding device from an end of a retaining member.