Multi-wire embolic protection filtering device

• US 7,137,991 B2
• Filed: 02/24/2003
• Issued: 11/21/2006
• Est. Priority Date: 02/24/2003
• Status: Expired due to Fees

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Fedie, Byron
• Primary Examiner(s): TRUONG, KEVIN THAO
• Application Number:
  US10/373,004
• Publication Number:
  US 20040167564A1
• Time in Patent Office: 1,366 Days
• Field of Search: 606/200, 606/113, 606/114, 606/127, 606/159, 606192-198, 606/108
• US Class Current: 606/200
• CPC Class Codes: A61F 2/0105 Open ended, i.e. legs gathered only at one side
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61F 2250/0003 having an inflatable pocket filled with fluid, e.g. liquid or gas

Abstract

An embolic protection filtering device and method of making and using the same. The present invention comprises a filtering device including an elongate shaft and a filter that may be releasably attachable to the shaft. The filter may include a coupling member that may be used to secure the filter to the shaft.

Claims

1. An embolic protection filtering device for coupling to an elongate shaft, comprising:

a filter capable of being coupled to the elongate shaft, the filter including an inflatable coupling member and an inflatable expansion member; and

wherein the inflatable coupling member is adapted to shift between a first deflated configuration in which the filter is slidable along the longitudinal axis of the shaft, and a second inflated configuration in which the position of the filter is substantially fixed relative to the shaft.

2. The filtering device of claim 1, wherein coupling member includes an inner surface and may include one or more teeth disposed along the inner surface.

3. The filtering device of claim 1, wherein the coupling member includes inflation port.

4. The filtering device of claim 3, further comprising an inflation tube coupled to the coupling member adjacent the inflation port.

5. The filtering device of claim 1, wherein the expansion member includes one or more inflation tubes.

6. The filtering device of claim 1, wherein the filter includes one or more inflatable longitudinal ribs.

7. The filtering device of claim 1, further comprising a slip ring disposed around the elongate shaft, one or more strut fibers extending between the filter and the slip member, and a proximal fiber attached to the slip ring and extending proximally therefrom.

8. An embolic protection filtering device, comprising:

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

a filter coupled to the shaft, the filter including a proximal mouth region, a filter membrane region, a distal region, and an inflatable coupling member disposed at the distal region, a proximal expansion member coupled to the proximal mouth region; and

wherein the inflatable coupling member is adapted to shift between a first deflated configuration in which the filter is slidable over the shaft, and a second inflated configuration in which the position of the filter is substantially fixed relative to the shaft.

9. The filtering device of claim 8, wherein the shaft comprises a guidewire.

10. The filtering device of claim 8, wherein inflatable coupling member includes an inflation port.

11. The filtering device of claim 10, further comprising an inflation tube detachably coupled to the inflation port.

12. The filtering device of claim 8, wherein the inflatable coupling member includes an inflation tube coupled thereto and extending proximally therefrom.

13. The filtering device of claim 8, wherein the proximal filter expansion member includes one or more inflation tubes coupled thereto and extending proximally therefrom.

14. The filtering device of claim 8, further comprising one or more inflatable longitudinal ribs.

15. The filtering device of claim 8, further comprising a slip ring disposed on the shaft and including a first wire attached to the filter and a second wire extending toward the proximal end of the shaft.