Hydraulic controlled retractable tip filter retrieval catheter

• US 7,153,320 B2
• Filed: 12/13/2001
• Issued: 12/26/2006
• Est. Priority Date: 12/13/2001
• Status: Expired due to Fees

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Broome, Thomas E., Euteneuer, Charles L.
• Primary Examiner(s): HO, TAN-UYEN THI
• Application Number:
  US10/017,877
• Publication Number:
  US 20030114879A1
• Time in Patent Office: 1,839 Days
• Field of Search: 606/200, 606113-114, 606/127, 606/194, 623/1.11
• US Class Current: 606/200
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0067 conical

Abstract

Distal protection filter retrieval devices and methods of retrieving a distal protection filter. A filter retrieval catheter may comprise an inner tube, an outer tube disposed over the inner tube, an annular lumen disposed between the inner tube and the outer tube, and a tapered member coupled to the lumen. The tapered member may be movable between a first position for passing a lesion and a second position retrieving a filter.

Claims

1. A filter retrieval catheter, comprising:

an inner tube having a proximal end, a distal end, and an inner lumen extending therethrough;

an outer tube disposed over the inner tube, the outer tube including a proximal end and a distal end;

wherein an annular lumen is defined between the inner tube and the outer tube;

a filter disposed on a shaft, the shaft disposed at least in part in the inner lumen proximate the distal end of a sheath; and

a tip member including a rolling member in fluid communication with the annular lumen, the rolling member adapted and configured to transition between a first tapered position for advancing to the filter and a second expanded position for receiving the filter, the rolling member configured to transition by a change in fluidic pressure within the annular lumen.

2. The filter retrieval catheter in accordance with claim 1, wherein, in the first position at least a portion of the rolling member is disposed proximal to the distal end of the inner tube.

3. The filter retrieval catheter in accordance with claim 1, wherein, in the second position at least a portion of the rolling membrane extends distally of the distal end of the inner tube.