Embolic basket

• US 7,004,956 B2
• Filed: 04/25/2003
• Issued: 02/28/2006
• Est. Priority Date: 12/23/1999
• Status: Expired due to Term

• Current Assignee: EndoVascular Technologies Incorporated (Boston Scientific Corporation)
• Original Assignee: EndoVascular Technologies Incorporated (Boston Scientific Corporation)
• Inventors: Shen, Christopher T., Palmer, Olin
• Primary Examiner(s): TRUONG, KEVIN THAO
• Application Number:
  US10/423,300
• Publication Number:
  US 20030204202A1
• Time in Patent Office: 1,040 Days
• Field of Search: 606/200, 606/159, 606/113, 606/114, 606/127, 623/1.15, 623/1.16
• 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 first end and a second end, the first end extending exterior of the vasculature;

a body having a first section, a second section and a third section configured to form a basket, the body being attached to the second end of the elongate member;

the body first section is a first end portion having at least one first member section;

the body second section is a mid-portion having at least one ring member having a plurality of generally equal length members connected in an alternating V-pattern; and

the body third section is a second end portion having at least one second member section.

2. The device of claim 1, the body further comprising an open first end and a substantially closed second end.

3. The device of claim 2, wherein the body is manufactured from a tube.

4. The device of claim 1, wherein the body has a longitudinal axis and is defined by a generally tubular sidewall, the elongate member extending from the sidewall in a parallel relationship with the longitudinal axis.

5. The device of claim 1, wherein the body has a compressed configuration and an expanded configuration.

6. The device of claim 1, the straight member section of the first end portion further comprising a plurality of straight or curvilinear members having proximal ends and distal ends.

7. The device of claim 6, wherein the straight or curvilinear members form a V-shape having converging vertices defining a proximal end and diverging branches defining a distal end.

8. The device of claim 1, the second section further comprising a plurality of straight members, the straight members forming a V-shape having diverging single branches defining a proximal end and converging vertices defining a distal end.

9. The device of claim 8, the second end portion further comprising a plurality of extending members, the extending members extend from the converging vertices of the distal end of the second section.

10. The device of claim 9, wherein the extending members are connected to form a distal tip to the body.

11. The device of claim 10, the distal tip further comprising a coil coaxially arranged about the extending members.

12. The device of claim 1, wherein the ring members include a plurality of apices defining a proximal end and a distal end, the apices are formed from the straight members merging in the alternating V-pattern.

13. The device of claim 1, wherein the first end portion further comprising a pair of the diverging undulate members, each of the undulate members having a first end and a second end, the first end of the undulate members converge to form a tab, the tab being affixed to the second end of the elongate member.

14. The device of claim 1, further comprising a generally tubular delivery catheter, the delivery catheter including an internal lumen sized to slidably receive the elongate member and the body.

15. The device of claim 1, wherein the device is fabricated from a tubular element using a laser.

16. The device of claim 1, wherein the device is made from self-expanding, superelastic, or shape memory material.

17. The device of claim 1, the body further comprising a distal tip portion.

18. The device of claim 17, the distal tip portion further comprising a blunt terminal end formed from a soldered joint.

19. The device of claim 1, further comprising a branch configured between pairs of diverging members defining the body.

20. The device of claim 19, the branch further comprising a length and a terminal end.

21. The device of claim 20, wherein the terminal end defines a pattern which is discontinuous from the length.