Embolic basket

• US 8,137,377 B2
• Filed: 04/29/2008
• Issued: 03/20/2012
• 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.
• Primary Examiner(s): TRUONG, KEVIN THAO
• Application Number:
  US12/111,911
• Publication Number:
  US 20080275498A1
• Time in Patent Office: 1,421 Days
• Field of Search: 606/1, 606/113, 606/114, 606/127, 606/159, 606/200, 600/434, 600/585
• 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 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• 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 2002/016 made from wire-like elements
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2230/0097 Harpoon-shaped
• CPC Class Codes: A61M 29/00 Dilators with or without means for introducing media, e.g. remedies instruments for performing visual medical inspections of cavities or tubes of the body A61B1/00

Abstract

An intravascular basket device for use in capturing either naturally occurring or foreign debris found in blood vessels or other regions of the body. The basket device is fabricated from a tube and includes a mid-section having at least one ring configured in an alternating V-pattern. The basket device specifically embodies structure that provides enhanced radial opening and angular resistance to collapse.

Claims

1. A medical retrieval device for use in a patient'"'"'s vasculature, comprising:

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

a body attached to the distal end of the elongate member which is configured to engage or capture material found in the vasculature, the body including a distally directed extension; and

a distal tip portion including a first coil and a second coil which coaxially extend over the distally directed extension of the body.

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

3. The device of claim 1, wherein the second coil is made from an alloy made from about 90% platinum and about 10% iridium.

4. The device of claim 1, further including a weld which connects the distally directed extension to the first coil.

5. The device of claim 1, further including a second distally directed extension which has the first and second coils coaxially disposed thereover.

6. The device of claim 5, wherein the first distally directed extension has longitudinal length which is longer than the longitudinal length of the second distally directed extension.

7. The device of claim 1, wherein the first coil has a longitudinal length and the second coil has a longitudinal length, the longitudinal length of the first coil being shorter that the longitudinal length of the second coil.

8. The device of claim 7, wherein the second coil is coaxially disposed over at least a portion of the first coil.

9. The device of claim 8, wherein the distal end of the first coil is located proximal to the distal end of the second coil.

10. The device of claim 9, wherein the first coil is made from nitinol.

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

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