Filter/emboli extractor for use in variable sized blood vessels

• US 6,458,139 B1
• Filed: 06/21/2000
• Issued: 10/01/2002
• Est. Priority Date: 06/21/1999
• Status: Expired due to Term

• Current Assignee: Abbott Cardiovascular Systems Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: EndoVascular Technologies Incorporated (Boston Scientific Corporation)
• Inventors: Palmer, Olin J., Voss, Larry, Hancock, David, Ken, Christopher G. M.
• Primary Examiner(s): TRUONG, KEVIN THAO
• Application Number:
  US09/599,146
• Time in Patent Office: 832 Days
• Field of Search: 606/159, 606/113, 606/114, 606/127, 606/200
• US Class Current: 606/113
• 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

at least two radially extending structures spaced apart longitudinally along the elongate wire proximate the distal end, at least one radially extending structure including a loop having a rounded atraumatic end, the loop originating and terminating at a substantially common longitudinal position on the elongate wire.

2. The device of claim 1, wherein the radially extending structures have a different outside radius.

3. The device of claim 2, wherein a distal most radially extending structure has a larger outside radius than the adjacent radially extending structure.

4. The device of claim 1, wherein each radially extending structure is affixed to the elongate wire such that rotation of the wire entangles the radially extending structures in the unwanted material.

5. The device of claim 1, wherein each radially extending structure comprises a plurality of loops arranged in an annular radial array about the circumference of the wire.

6. The device of claim 1, wherein certain of the radially extending structures overlay an adjacent radially extending structure.

7. The device of claim 1, wherein the radially extending structures extend transversely to the elongate wire.

8. The device of claim 1, wherein the elongate wire has a length sufficient to extend from within a patient'"'"'s vasculature to outside the patient'"'"'s vasculature.

9. The device of claim 1, wherein the device is configured to be used with a delivery catheter.

10. The device of claim 9, wherein the delivery catheter is configured to retain the device in a radially compressed configuration.