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VASCULAR AND BODILY DUCT TREATMENT DEVICES AND METHODS

  • US 20110009950A1
  • Filed: 07/08/2010
  • Published: 01/13/2011
  • Est. Priority Date: 07/08/2009
  • Status: Active Grant
First Claim
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1. A device comprising:

  • an elongate self-expandable member movable from a first delivery position to a second placement position, in the first delivery position the expandable member being in an unexpanded position and having a nominal first diameter and in the second position the expandable member being in a radially expanded position and having a second nominal diameter greater than the first nominal diameter for deployment within a vessel or duct of a patient, the expandable member comprising a plurality of cell structures, the expandable member having a proximal end portion with a proximal end and a cylindrical main body portion, the cell structures in the main body portion extending circumferentially around a longitudinal axis of the expandable member, the cell structures in the proximal end portion extending less than circumferentially around the longitudinal axis of the expandable member, the cell structures having dimensional and material characteristics that result in about a −

    1.5N to a about a −

    3.5N overall reduction in radial force along the length of the expandable member per millimeter of expansion during about an initial 0.50 mm diametric range of expansion from the nominal diameter and that results in about a −

    0.10N to about a −

    0.50N overall reduction in radial force along the length of the expandable member per millimeter of expansion during subsequent diametric ranges of expansion.

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