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Retrievable device having a reticulation portion with staggered struts

  • US 8,845,677 B2
  • Filed: 12/23/2011
  • Issued: 09/30/2014
  • Est. Priority Date: 06/20/2005
  • Status: Active Grant
First Claim
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1. An assembly for treating a stenotic lesion in a body vessel, the assembly comprising:

  • an outer catheter including a tubular body having a distal end; and

    a retrievable device coaxially disposable within the tubular body of the outer catheter and deployable through the distal end thereof for treatment of the stenotic lesion in the body vessel, the device comprising;

    a reticulation portion having a deployed state and a collapsed state, the reticulation portion forming an axial section of the retrievable device and including a plurality of struts and at least three longitudinally spaced single pivoting joints defining longitudinal reticulation sections therebetween, each pivoting joint of the reticulation portion being longitudinally offset from all other pivoting joints of the reticulation portion, each of the pivoting joints connecting a longitudinally coextending pair of the plurality of struts, the number of struts within each of the reticulation sections singly increasing from the reticulation section to a distally adjacent reticulation section along the entire reticulation portion, the pairs of struts of the reticulation portion being configured to fold along the longitudinal axis defining a collapsed state of the device for retrieval;

    an expandable body distally extending from the reticulation portion along an outer diameter for treatment of the stenotic lesion, the expandable body being configured to expand in the deployed state and collapsed in the collapsed state of the reticulation portion for retrieval; and

    a retrieval stem extending proximally from the reticulation portion for retrieval of the device in the collapsed state.

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