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Intravascular filter and method

  • US 7,618,433 B2
  • Filed: 03/18/2003
  • Issued: 11/17/2009
  • Est. Priority Date: 02/24/1999
  • Status: Expired due to Fees
First Claim
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1. A method for delivering an embolic protection filter, comprising the steps of:

  • providing a filtering assembly, the assembly including an elongate shaft, a filter coupled to the shaft, and a sheath for delivering the filter, the sheath having a proximal section and a flared distal housing section;

    disposing a portion of the filter within the sheath so that a proximal mouth portion of the filter is partially collapsed and disposed within the housing section and so that a tapered distal portion of the filter, including a porous filter material, extends at least in part distally out of the housing section;

    advancing the filtering assembly through a blood vessel to a position adjacent a target site while the porous filter material extends at least in pan distally out of the housing section; and

    proximally retracting the sheath relative to the filter so that the filter emerges from the sheath and expands within the blood vessel.

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