Distal protection device

• US 6,053,932 A
• Filed: 05/20/1998
• Issued: 04/25/2000
• Est. Priority Date: 03/06/1997
• Status: Expired due to Term

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Daniel, John M. K., Holtan, David J., Cassell, Robert L.
• Primary Examiner(s): Jackson, Gary
• Assistant Examiner(s): Lewis, William W.
• Application Number:
  US09/082,096
• Time in Patent Office: 706 Days
• Field of Search: 606/1, 606/159, 604/96, 604/101, 604/104-108
• 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 blood flowing in the vasculature. The emboli capturing system includes a guidewire having a longitudinal axis and defining a lumen along at least a portion thereof. An expandable member is coupled to a distal portion of the guidewire and has an interior being in fluid communication with the lumen in the guidewire. The expandable member is configured to receive fluid through the lumen to expand radially outwardly relative to the guidewire and have fluid removed from the interior thereof to collapse radially inwardly relative to the guidewire. The expandable member, when expanded, has a spaced portion thereof spaced radially outwardly from the guidewire. An emboli capturing device is coupled to the expandable member and is configured to deploy radially outwardly relative to the guidewire upon expansion of the expandable member.

Claims

1. An emboli capturing system for introduction into vasculature to capture emboli in blood flowing in the vasculature, the emboli capturing system comprising:

a guidewire;

an emboli capturing device operably coupled to a distal portion of the guidewire, the emboli capturing device having a first end coupled to the guidewire and a second, expandable end; and

a cinch assembly disposed at the second end of the emboli capturing device, the cinch assembly including a cinching actuator extending proximally, actuation of the cinch actuator retracting the second end of the emboli capturing device.

2. The emboli capturing system of claim 1 wherein the emboli capturing device comprises a mesh.

3. The emboli capturing system of claim 1 wherein the guidewire has a lumen extending therethrough and wherein the cinch actuator extends from the second end of the emboli capturing device, proximally through the lumen.

4. The emboli capturing system of claim 1 wherein the second end of the emboli capturing device opens distally.

5. The emboli capturing system of claim 1 wherein the second end of the emboli capturing device opens proximally.

6. The emboli capturing system of claim 1 wherein the guidewire has a lumen extending at least through a distal region thereof and wherein the first end of the emboli capturing device is disposed within the lumen.

7. The emboli capturing system of claim 1 wherein the cinch assembly includes a plurality of eyelets disposed at the second end of the emboli capturing device and wherein the cinching actuator includes a wire, threaded through the eyelets.

8. The emboli capturing system of claim 1 wherein the emboli capturing device, when in a collapsed position, has an outer diameter approximating an outer diameter of the guidewire.

9. The emboli capturing system of claim 1 wherein the emboli capturing device is biased in a collapsed position in which it has an outer diameter approximating the outer diameter of the guidewire, and wherein the emboli capturing device includes an expansion actuator actuable to expand and deploy the emboli capturing device radially outwardly relative to the guidewire.

10. The emboli capturing system of claim 1 wherein the emboli capturing device is biased in a deployed position in which it is expanded radially outwardly relative to the guidewire, and wherein actuation of the cinching actuator causes the emboli capturing device to move to a retracted position wherein the emboli capturing device has an outer diameter approximating an outer diameter of the guidewire.