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Hollow helical stent system

  • US 7,942,917 B2
  • Filed: 04/17/2009
  • Issued: 05/17/2011
  • Est. Priority Date: 04/17/2009
  • Status: Active Grant
First Claim
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1. A stent system comprising:

  • an actuation shaft having an elongated tubular body defining a lumen;

    a stent releasably attached to the actuation shaft and formed from a resilient tube having a fluid passageway in fluid communication with the actuation shaft lumen, the stent having a helical expanded configuration where the resilient tube forms consecutive loops which have a blood flow lumen therethrough and a linear delivery configuration where the loops of the resilient tube are substantially straightened,wherein the stent is transformable from the delivery configuration to the helical expanded configuration through introduction of a deployment fluid into the fluid passageway of the resilient tube via the actuation shaft lumen;

    a guidewire with an elongated body having a reduced diameter distal portion; and

    a ring attached to a distal end of the stent, wherein the ring is slidable over the guidewire distal portion to abut a step in the guidewire.

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