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EMBOLIC OBSTRUCTION RETRIEVAL DEVICES AND METHODS

  • US 20110009875A1
  • Filed: 07/08/2009
  • Published: 01/13/2011
  • Est. Priority Date: 07/08/2009
  • Status: Active Grant
First Claim
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1. An embolic obstruction retrieval 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 an embolic obstruction of a patient, the expandable member comprising a plurality of generally longitudinal undulating elements with adjacent undulating elements being interconnected in a manner to form a plurality of diagonally disposed cell structures, the expandable member having a proximal end portion, a cylindrical main body portion and a distal end 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 and distal end portions extending less than circumferentially around the longitudinal axis of the expandable member, the outer-most cell structures in the proximal end portion having proximal-most linear wall segments that, in a two-dimensional view, form first and second substantially linear rail segments that each extend from a position at or near the proximal-most end of the expandable member to a position at or near the cylindrical main body portion; and

    a first proximally extending elongate flexible wire connected to the proximal-most end of the expandable member.

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