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External steerable fiber for use in endoluminal deployment of expandable devices

  • US 9,877,858 B2
  • Filed: 11/19/2013
  • Issued: 01/30/2018
  • Est. Priority Date: 11/14/2011
  • Status: Active Grant
First Claim
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1. A catheter assembly comprising:

  • a leading end;

    a trailing end;

    an expandable device positioned at the leading end, the expandable device having a proximal end and a distal end, the expandable device having a collapsed configuration for endoluminal delivery of the expandable device to a treatment site in a body of a patient, and an expanded configuration having a diameter larger than the diameter of the collapsed configuration;

    an axially displaceable sheath extending around the expandable device to releasably constrain the expandable device toward the collapsed configuration to allow outward expansion of the expandable device from the collapsed configuration toward an intermediate configuration and a partially deployed configuration in response to axial displacement of the axially displaceable sheath at the treatment site in the body of the patient;

    a flexible film sleeve wrapped circumferentially around the expandable device;

    a coupling member cooperating with a plurality of openings in the sleeve for releasably coupling portions of the sleeve to one another to limit expansion of at least a portion of the expandable device after removal of the axially displaceable sheath, the sleeve limiting expansion of the expandable device to the intermediate configuration and partially deployed configuration;

    a pusher axially slidable relative to the axially displaceable sheath and configured to prevent movement of the expandable device in response to release of the axially displaceable sheath; and

    a steering line operatively coupled to the sleeve to allow axial bending of the at least a portion of the expandable device while in the intermediate configuration and the partially deployed configuration in response to selective displacement of the steering line relative to the catheter.

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