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Method and device for filtering body fluid

  • US 20050203570A1
  • Filed: 05/03/2005
  • Published: 09/15/2005
  • Est. Priority Date: 07/08/1994
  • Status: Active Grant
First Claim
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1. A method for filtering emboli from blood flowing through a body vessel during therapeutic treatment at a treatment site in the vessel comprising:

  • providing a guidewire having distal and proximal ends and carrying a filter on a distal portion of the guidewire, the filter being expandable from a collapsed delivery configuration to an expanded deployed configuration;

    providing an introduction member having distal and proximal ends and a lumen sized to receive the guidewire;

    providing a retrieval member having distal and proximal ends and a lumen sized to receive the guidewire;

    introducing the introduction member into the vessel;

    advancing the guidewire through the vessel while the filter is contained within the lumen of the introduction member in its collapsed delivery configuration;

    expanding the filter to its expanded deployed configuration at a location within the vessel distal to the treatment site;

    removing the introduction member from the vessel;

    after the introduction member has been removed performing a therapeutic treatment at the treatment site;

    filtering emboli released into blood during the therapeutic treatment with the filter;

    after the therapeutic treatment has been performed introducing the distal end of the retrieval member into the vessel;

    advancing the retrieval member over the guidewire to retrieve the filter; and

    removing the retrieval member, guidewire and filter from the vessel.

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