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Controlled sequential deployment

  • US 8,808,349 B2
  • Filed: 03/08/2012
  • Issued: 08/19/2014
  • Est. Priority Date: 04/27/2006
  • Status: Active Grant
First Claim
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1. A stent graft introducer comprising a deployment catheter and a handle assembly;

  • the deployment catheter comprising a pusher, a stent graft releasably retained onto the pusher, a temporary stent graft retention arrangement, a sheath coaxially around the pusher and enclosing the stent graft and a sheath hub to which the sheath is mounted proximate the distal end of the sheath;

    the handle assembly comprising, a handle, at least one slide and a slider, the at least one slide able to slide to retract within the handle, the slider being longitudinally movable within the handle, the at least one slide including a releasable engagement arrangement to engage and retain the sheath hub to the at least one slide, a first removable stop arrangement engaged between the handle and the slider to prevent relative movement thereof and disposed within the handle assembly, the pusher extending longitudinally through the at least one slide and being mounted to the handle, the temporary stent graft retention arrangement including trigger wires extending through the pusher and the trigger wires being affixed to the slider;

    whereby movement of the at least one slide with respect to the handle moves the sheath hub and thereby the sheath on the pusher to expose the stent graft until the at least one slide engages against first removable stop arrangement and causes disengagement of the first removable stop arrangement with the handle whereupon the disengagement of the first removable stop arrangement with the handle enables the slider to move with respect to the handle and the at least one slide thereby withdrawing the trigger wires and releasing the temporary stent graft retention arrangement.

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