Snare

• US 8,142,442 B2
• Filed: 04/29/2008
• Issued: 03/27/2012
• Est. Priority Date: 12/23/1999
• Status: Expired due to Fees

• Current Assignee: Abbott Laboratories
• Original Assignee: Abbott Laboratories
• Inventors: Palmer, Olin, Shen, Christopher T., LaDuca, Robert, Voss, Larry, Phonthalasa, Saypin
• Primary Examiner(s): TRUONG, KEVIN THAO
• Application Number:
  US12/111,870
• Publication Number:
  US 20080275497A1
• Time in Patent Office: 1,428 Days
• Field of Search: 606/1, 606/113, 606/114, 606/127, 606/159, 606/200, 600/434, 600/585
• US Class Current: 606/113
• 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 2017/2212 having a closed distal end, e.g. a loop

Abstract

An intravascular snare device for use in capturing debris found in blood vessels. The snare device is fabricated from a tube and includes longitudinally and circumferentially extending members. The snare device specifically embodies structure that provides enhanced radial opening and angular resistance to collapse.

Claims

1. A snare device for use in vasculature, comprising:

an elongate member having a first end and a second end;

a distal tip portion located on the second end of the elongate member, the distal tip portion including a first coil and a second coil, the second coil being disposed adjacent to the first coil, the first and second coils being made from different materials; and

a body configured to engage or capture material found in the vasculature, the body including a proximally extending tab which is attached to the distal tip portion of the elongate member, wherein at least a portion of the second coil is disposed over at least a portion of the proximally extending tab.

2. The device of claim 1, wherein the distal tip portion includes a blunt terminal end formed from a solder joint.

3. The device of claim 1, wherein the first coil is made from nitinol.

4. The device of claim 3, wherein the second coil is made from an alloy made from about 90% platinum and about 10% iridium.

5. The device of claim 1, wherein the distal tip portion includes a weld which connects the proximally extending tab to the distal end of the elongate member.

6. The device of claim 1, further including a weld connecting the first coil to the distal end of the elongate member.

7. The device of claim 6, further including a weld connecting the first coil to the second coil.

8. The device of claim 1, further including a weld connecting the second coil to the distal end of the elongate member.

9. The device of claim 1, further includes a weld which connects the proximally extending tab to the distal end of the elongate member.

10. The device of claim 1, wherein the body includes a distal end having a distal tip made from an inner coil and an outer coil attached thereto, the outer coil being coaxially disposed about at least a portion of the inner coil.

11. The device of claim 10, wherein the inner coil is made from nitinol.

12. The device of claim 11, wherein the outer coil is made from an alloy made from about 90% platinum and about 10% iridium.

13. The device of claim 10, wherein at least a portion of the body extends distally from the distal end of the elongate member.

14. The device of claim 1, wherein the first coil is made from stainless steel.

15. The device of claim 14, wherein the second coil is made from an alloy made from about 90% platinum and about 10% iridium.

16. The device of claim 1, wherein at least a portion of the body extends distally from the distal end of the elongate member.