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Filter membrane with increased surface area

  • US 6,969,396 B2
  • Filed: 05/07/2003
  • Issued: 11/29/2005
  • Est. Priority Date: 05/07/2003
  • Status: Expired due to Term
First Claim
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1. An embolic protection filtering device, comprising:

  • an elongate shaft having a proximal end and a distal end;

    a filter coupled to the shaft, the filter including a filter frame, and a filter membrane coupled to the filter frame; and

    the filter membrane and the filter frame expandable between a collapsed position and an expanded position, in the expanded position, the filter membrane has a proximal region and a distal region, the proximal region defining a generally smooth sided open filter mouth and the distal region includes including one or more pleats, wherein the pleats are defined by one or more bonds between the filter membrane and the shaft.

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