Filter/emboli extractor for use in variable sized blood vessels

• US 7,179,273 B1
• Filed: 08/05/2002
• Issued: 02/20/2007
• Est. Priority Date: 06/21/1999
• Status: Expired due to Fees

• Current Assignee: EndoVascular Technologies Incorporated (Boston Scientific Corporation)
• Original Assignee: EndoVascular Technologies Incorporated (Boston Scientific Corporation)
• Inventors: Palmer, Olin J., Voss, Larry, Ken, Christopher G. M., Hancock, deceased, Hancock, legal representative
• Primary Examiner(s): TRUONG, KEVIN THAO
• Application Number:
  US10/212,298
• Time in Patent Office: 1,660 Days
• Field of Search: 606/113,114,127,159,200
• US Class Current: 606/200
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• 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 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/22034 for gripping the obstruction or the tissue part from inside
• CPC Class Codes: A61B 2017/22038 with a guide wire
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop

Abstract

An extraction device for the removal of clots and foreign bodies from vasculature. The extractor device is connected to an elongate mandrel and is located within a longitudinally extending lumen defined by a catheter. A clot or foreign material extracted from a vessel by moving the extraction device and catheter proximally until the clot or foreign material does not perfuse a critical organ.

Claims

1. A device for removing unwanted material from vasculature, comprising:

an elongate wire having a distal end; and

a mesh structure, the mesh structure originating from one side of the wire.

2. The device of claim 1, wherein the mesh structure is knitted.

3. The device of claim 1, wherein the mesh structure includes a distal end and a proximal end attached to the wire, the mesh structure having a relaxed configuration wherein the wire is offset laterally from a longitudinal axis passing through the mesh structure.

4. The device of claim 3, wherein the proximal end of the mesh structure is open.

5. The device of claim 3, wherein the distal end of the mesh structure is open.

6. The device of claim 1, wherein the wire has a tubular configuration.

7. The device of claim 1, further comprising arms connecting the mesh structure to the wire.

8. The device of claim 1, the mesh structure further comprising a terminal end that is generally at a right angle to a longitudinal axis of the mesh structure.

9. The device of claim 1, wherein the mesh structure is porous.

10. The device of claim 1, the mesh structure including a generally cylindrical mid-section.

11. The device of claim 1, wherein the mesh structure is configured proximate the distal end of wire.

12. The device of claim 1, wherein the mesh structure originates from one side of the wire at an origination point, the mesh structure being connected to the elongate wire at only the origination point.

13. A device for removing unwanted material from vasculature, comprising:

an elongate wire having a distal end; and

a material engaging structure attached to the elongate wire, the material engaging structure including a plurality of members originating from one side of the wire and from substantially a common longitudinal position therefrom.

14. The device of claim 13, wherein the material engaging structure defines a mesh structure.

15. The device of claim 14, wherein the mesh structure includes a distal end and a proximal end attached to the wire, the mesh structure having a relaxed configuration wherein the wire is offset laterally from a longitudinal axis passing through the mesh structure.

16. The device of claim 15, wherein the proximal end of the mesh structure is open.

17. The device of claim 16, wherein the distal end of the mesh structure is open.

18. The device of claim 13, wherein the material engaging structure is positioned approximate the distal end of the wire.

19. The device of claim 13, wherein the wire has a tubular configuration.

20. The device of claim 13, further comprising arms connecting the material engaging structure to the wire.

21. The device of claim 13, the material engaging structure further comprising a terminal end is generally at a right angle to a longitudinal axis of the mesh structure.

22. The device of claim 13, wherein the material engaging structure is porous.

23. The device of claim 13, wherein the material engaging structure includes a generally cylindrical midsection.

24. The device of claim 13, wherein the material engaging structure defines a loop.

25. The device of claim 13, wherein the material engaging structure comprises a plurality of loops.

26. The device of claim 13, wherein the material engaging structure including a plurality of members originate from an origination point on the elongate wire, the material engaging structure being connected to the elongate wire at only the origination point.