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Methods for maintaining a filtering device within a lumen

  • US 9,510,845 B2
  • Filed: 06/28/2013
  • Issued: 12/06/2016
  • Est. Priority Date: 01/03/2005
  • Status: Expired due to Fees
First Claim
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1. A method of filtering blood flow in a vena cava, comprising:

  • positioning a collapsed open loop filter support structure comprising a first end, a second end, and two opposing spiral support elements within the vena cava;

    deploying the open loop filter support within the vena cava to position a portion of the filter support along the wall of the vena cava, wherein the two opposing spiral support elements cross over each other to form a crossover section between the first end and the second end;

    filtering blood flow in the vena cava using a filter supported by the open loop filter support structure, the filter extending between the crossover section and at least one of the first end or the second end; and

    moving the portion of the filter support relative to the wall of the vena cava to maintain the shape of the filter over a physiological range of the vena cava.

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