Distal protection device and method

• US 6,663,652 B2
• Filed: 05/30/2002
• Issued: 12/16/2003
• Est. Priority Date: 03/06/1997
• Status: Expired due to Term

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Daniel O. Adams, David J. Holtan, John M.K. Daniel, Robert L. Cassell, Thomas E. Broome
• Inventors: Adams, Daniel O., Daniel, John M. K., Broome, Thomas E., Holtan, David J., Cassell, Robert L.
• Primary Examiner(s): Milano, Michael J.
• Assistant Examiner(s): NGUYEN, VI X
• Application Number:
  US10/160,450
• Publication Number:
  US 20030083693A1
• Time in Patent Office: 565 Days
• Field of Search: 606/200, 606/113, 606/114, 606/127, 606/159
• US Class Current: 606/200
• CPC Class Codes: A61B 17/22031 Gripping instruments, e.g. forceps, for removing or smashing calculi A61B17/221 takes precedence
• 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 2017/00539 hydraulically
• CPC Class Codes: A61B 2017/22038 with a guide wire
• CPC Class Codes: A61B 2017/22042 Details of the tip of the guide wire
• CPC Class Codes: A61B 2017/22049 Means for locking the guide wire in the catheter
• CPC Class Codes: A61B 2017/22061 for spreading elements apart
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61F 2/0105 Open ended, i.e. legs gathered only at one side
• CPC Class Codes: A61F 2/0108 Both ends closed, i.e. legs gathered at both ends
• 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 2/014 Retrograde blood flow filters, i.e. device inserted against the blood flow direction
• CPC Class Codes: A61F 2002/015 Stop means therefor
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2002/30092 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61F 2230/0021 square
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2230/0076 ellipsoidal or ovoid
• CPC Class Codes: A61F 2230/008 : paraboloidal
• CPC Class Codes: A61F 2230/0086 : Pyramidal, tetrahedral, or wedge-shaped
• CPC Class Codes: A61F 2250/0003 : having an inflatable pocket filled with fluid, e.g. liquid or gas
• CPC Class Codes: A61M 2025/09125 : Device for locking a guide wire in a fixed position with respect to the catheter or the human body
• CPC Class Codes: A61M 2025/09183 : having tools at the distal tip

Abstract

An emboli capturing system captures emboli in a body lumen. A first elongate member has a proximal end and a distal end. An expandable emboli capturing device is mounted proximate the distal end of the first elongate member, and is movable between a radially expanded position and a radially contracted position. When in the expanded position, the emboli capturing device forms a basket with a proximally opening mouth. A second elongate member has a proximal and a distal end with a lumen extending therebetween. The lumen is sized to slidably receive a portion of the first elongate member. An expandable delivery device is mounted to the distal end of the second elongate member and is movable from a radially retracted position to a radially expanded position. The delivery device has a receiving end configured to receive the emboli capturing device, and retains at least the mouth of the emboli capturing device in a radially retracted position.

Claims

1. An embolic protection device, comprising:

an elongate member having a proximal end and a distal end, and a transversely extending protrusion;

a tubular member disposed about the elongate member at least a portion of the tubular member being slidable over the elongate member;

a porous member attached to the tubular member; and

wherein the protusion limits the sliding movement of the tubular member over the elongate member.

2. An embolic protection device in accordance with claim 1, wherein the tubular member includes a plurality of struts connected thereto.

3. An embolic protection device in accordance with claim 2, wherein the struts comprise NiTi alloy.

4. An embolic protection device in accordance with claim 3, wherein the NiTi alloy comprises Nitinol.

5. An embolic protection device in accordance with claim 2, wherein the struts are moveable between a first position and an expanded position.

6. An embolic protection device in accordance with claim 5, wherein the porous membrane is attached to the struts.

7. An embolic protection device in accordance with claim 6, wherein, when the struts move from the first position to the expanded position, the porous membrane moves from a collapsed to an expanded position.

8. An embolic protection device in accordance with claim 7, wherein, when the porous membrane is in the expanded position, blood and emboli can pass by a proximal portion of the struts, blood can flow through the porous membrane, and emboli can be retained by the porous membrane.