Magnetic embolic protection device and method

• US 20050240215A1
• Filed: 04/21/2004
• Published: 10/27/2005
• Est. Priority Date: 04/21/2004
• Status: Abandoned Application

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Ellis, Louis G.
• Application Number:
  US10/828,721
• Publication Number:
  US 20050240215A1
• Time in Patent Office: Days
• US Class Current: 606/200
• CPC Class Codes: A61F 2/01 Filters implantable into blood vessels
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• CPC Class Codes: A61F 2210/009 magnetic
• CPC Class Codes: A61F 2230/0006 circular

Abstract

An embolic protection device including an elongate shaft having a proximal end and a distal end. A magnetically permeable section can be disposed proximate the proximal end of the shaft and an embolic protection filter can be disposed on the elongate shaft. And a captivation tool including a magnetic section can be magnetically couplable to the magnetically permeable section disposed on the shaft.

Claims

1. An embolic protection device, comprising:

an elongate shaft having a proximal end and a distal end;

a magnetically permeable section disposed proximate the proximal end of the shaft; and

an embolic protection filter disposed on the elongate shaft.

2. A device in accordance with claim 1, further comprising of plurality spaced apart magnetically permeable sections disposed proximate the proximal end of the shaft.

3. A device in accordance with claim 2, further comprising of plurality of non-magnetically permeable spacers disposed between the magnetically permeable sections.

4. A device in accordance with claim 2, further comprising a captivation tool including a plurality of spaced apart magnetic sections magnetically couplable to the magnetically permeable sections.

5. A device in accordance with claim 1, further comprising a captivation tool including a magnetic section magnetically couplable to the magnetically permeable section.

6. A device in accordance with claim 5, further comprising a sheath being disposed between the magnetically permeable section and the magnetic section.

7. A device in accordance with claim 1, further comprising a delivery sheath disposed at least in part about the shaft.

8. A device in accordance with claim 1, wherein the shaft comprises a wire.

9. A device in accordance with claim 8, wherein the shaft comprises a NiTi alloy.

10. A device in accordance with claim 1, wherein the filter includes a frame including nickel titanium alloy.

11. A device in accordance with claim 1, wherein the filter is fixed to the elongate shaft.

12. The method of placing an embolic protection device in a vessel, comprising:

providing an elongate shaft having a proximal end and a distal end, an embolic protection filter disposed on the shaft and a magnetically permeable section disposed on the shaft;

providing a captivation tool including a magnetic section;

advancing the elongate shaft to a target site in the vessel; and

magnetically coupling the magnetically permeable section to the magnetic section.

13. A method in accordance with claim 12, further comprising advancing the shaft and the filter to the target site simultaneously.

14. A method in accordance with claim 12, further comprising providing a plurality of spaced apart magnetically permeable sections disposed proximate the proximal end of the shaft.

15. A method in accordance with claim 14, further comprising disposing a plurality of non-magnetically permeable spacers between the magnetically permeable sections.

16. A method in accordance with claim 14, further comprising providing the captivation tool with a plurality of spaced apart magnetic sections magnetically couplable to the magnetically permeable sections.

17. A method in accordance with claim 12, further comprising providing the captivation tool with a magnetic section magnetically couplable to the magnetically permeable section.

18. A method in accordance with claim 12, further comprising disposing a sheath between the magnetically permeable section and the magnetic section.

19. A method in accordance with claim 12, further comprising disposing a delivery sheath at least in part about the shaft.

20. A method in accordance with claim 12, wherein the shaft comprises a wire.

21. A method in accordance with claim 20, wherein the shaft comprises a NiTi alloy.

22. A method in accordance with claim 12, wherein the filter includes a frame including a nickel titanium alloy.

23. A method in accordance with claim 12, further comprising fixing the filter to the elongate shaft.

24. A method in accordance with claim 12, further comprising the step of advancing a therapeutic catheter along the elongate shaft to the target site.

25. A method in accordance with claim 24, further comprising withdrawing the therapeutic catheter from the elongate shaft and advancing a retrieval sheath over the shaft to retrieve the filter.

26. A method in accordance with claim 25, further comprising withdrawing the elongate shaft and retrieval sheath from the vessel.