Distal protection device and method

• US 6,974,469 B2
• Filed: 02/22/2002
• Issued: 12/13/2005
• Est. Priority Date: 03/06/1997
• Status: Expired due to Term

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Hektner, Thomas R., Daniel, John M. K., Broome, Thomas E.
• Primary Examiner(s): TRUONG, KEVIN THAO
• Application Number:
  US10/080,743
• Publication Number:
  US 20020082639A1
• Time in Patent Office: 1,390 Days
• Field of Search: 606/200, 606/113, 606/114, 606/127, 606/159
• US Class Current: 606/200
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 2017/00539 hydraulically
• CPC Class Codes: A61B 2017/22038 with a guide wire
• CPC Class Codes: A61B 2017/22042 Details of the tip of the guide wire
• CPC Class Codes: A61B 2017/22049 Means for locking the guide wire in the catheter
• CPC Class Codes: A61B 2017/22061 for spreading elements apart
• CPC Class Codes: A61F 2/0105 Open ended, i.e. legs gathered only at one side
• CPC Class Codes: A61F 2/0108 Both ends closed, i.e. legs gathered at both ends
• CPC Class Codes: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2002/30092 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61F 2230/0008 elliptical or oval
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61M 2025/09125 Device for locking a guide wire in a fixed position with respect to the catheter or the human body
• CPC Class Codes: A61M 2025/09183 having tools at the distal tip

Abstract

A device adapted for deployment in a body vessel for collecting floating debris and emboli in a filter. The device includes a collapsible proximally tapered frame for operably supporting the filter between a collapsed insertion profile and an expanded deployment profile. The tapered collapsible frame includes a mouth which is sized to extend to walls of the body vessel in the expanded deployed profile to seal the filter relative to the body vessel for collecting debris floating in the body vessel.

Claims

1. A distal protection device, comprising:

a sheath;

a guidewire having a proximal end and a distal end, wherein at least a portion of the guidewire passes through the sheath;

a filter coupled to the guidewire; and

a docking member coupled to the guidewire distally of the filter, the docking member including a channel adapted to receive a portion of the filter therein.

2. The distal protection device in accordance with claim 1, wherein the filter includes a plurality of openings for fluid flow therethrough.

3. The distal protection device in accordance with claim 1, further comprising a tapered frame coupled to the filter.

4. The distal protection device in accordance with claim 3, wherein the frame includes a mouth adapted to operate between an expanded profile and a collapsible profile.

5. The distal protection device in accordance with claim 4, further comprising a rib having a first end and a second end, wherein the first end is coupled to the guidewire and the second end is coupled to the mouth.

6. The distal protection device in accordance with claim 4, wherein the mouth is biased to be in the expanded profile.

7. The distal protection device in accordance with claim 1, wherein the docking member is tapered.

8. The distal protection device in accordance with claim 1, wherein the docking member is rigidly coupled to the guidewire.

9. The distal protection device in accordance with claim 1, wherein the docking member is detachably coupled to the guidewire.

10. The distal protection device in accordance with claim 1, wherein at least a portion of the docking member is disposed within the sheath.

11. A distal protection device, comprising:

a sheath;

a guidewire, wherein at least a portion of the guidewire passes through the sheath;

a filter having a plurality of openings;

a tapered frame coupled to the filter, the frame including a mouth;

a rib having a first end and a second end;

wherein the first end is coupled to the guidewire and the second end is coupled to the mouth; and

a docking member coupled to the guidewire, the docking member including a channel adapted to receive a portion of the filter therein.

12. The distal protection device in accordance with claim 11, wherein the mouth is adapted to operate between an expanded profile and a collapsible profile.

13. The distal protection device in accordance with claim 12, wherein the mouth is biased to be in the expanded profile.

14. The distal protection device in accordance with claim 11, wherein the docking member is tapered.

15. The distal protection device in accordance with claim 11, wherein the docking member is rigidly coupled to the guidewire.

16. The distal protection device in accordance with claim 11, wherein the docking member is detachably coupled to the guidewire.

17. The distal protection device in accordance with claim 11, wherein at least a portion of the docking member is disposed within the sheath.

18. A distal protection device, comprising:

a sheath;

a guidewire, wherein at least a portion of the guidewire passes through at least a portion of the sheath;

a filter having a proximal end and a distal end, where both the proximal end and the distal end are slidably connected to the guidewire;

a filter advancing member slidable relative to the guidewire and having a distal end and proximal end, the filter being engaged with the filter advancing member proximal the distal end of the filter engaging member; and

a stop coupled to the guidewire.

19. The distal protection device in accordance with claim 18, wherein the filter includes mouth adapted to operate between an expanded profile and a collapsible profile.

20. The distal protection device in accordance with claim 19, wherein the mouth is biased to be in the expanded profile.

21. The distal protection device in accordance with claim 18, wherein the stop is tapered.

22. The distal protection device in accordance with claim 18, wherein the stop is rigidly coupled to the guidewire.

23. The distal protection device in accordance with claim 18, wherein the stop is detachably coupled to the guidewire.

24. The distal protection device in accordance with claim 18, wherein the stop further comprises a channel.

25. The distal protection device in accordance with claim 24, wherein a portion of the filter may be disposed within the channel.