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VASCULAR PUNCTURE CLOSURE SYSTEM WITH GUIDE SHEATH STABILIZER

  • US 20100179588A1
  • Filed: 01/14/2009
  • Published: 07/15/2010
  • Est. Priority Date: 01/14/2009
  • Status: Abandoned Application
First Claim
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1. An apparatus for guiding a puncture closure device to a percutaneous puncture in a blood vessel wall comprising:

  • an elongate sheath having proximal and distal ends and having a longitudinally extending central lumen receptive to a puncture closure device and a pair of longitudinally extending wire lumens, each of the lumens terminating in a separate distal port at the distal end of the sheath and the distal ports of the wire lumens being circumferentially spaced at opposing locations about a distal port of the central lumen, the ports each intersecting an imaginary plane extending centrally through the sheath;

    each of the wire lumens containing a slidably movable retention wire, the distal end of each retention wire being sharp and adapted to pierce the wall of the vessel, the retention wires being slidable between a retracted position in which the distal ends are contained within their respective lumens and a deployed position in which the sharp ends are extended beyond the distal ports of their respective lumens;

    a distal portion of each retention wire being preformed to a non-linear anchoring configuration when unconstrained, the anchoring configuration being adapted to resist detachment of the retention wire from the vessel wall when engaged with the vessel wall, the wire having sufficient flexibility to enable it to assume a linear configuration within its respective lumen when retracted into its lumen to its retracted position;

    whereby the sheath may be located with its distal end adjacent and in registry with the puncture in the vessel and with the central plane of the sheath intersecting and extending longitudinally of the vessel, such that the retention wires can be advanced from their retracted positions to cause their sharp ends to engage and pierce the vessel wall at spaced locations proximally and distally of the puncture and to assume their anchoring configuration when engaged with the vessel wall to stabilize the sheath and central lumen in that position.

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