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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
First Claim
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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.

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