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Rolling membrane stent delivery device

  • US 5,662,703 A
  • Filed: 09/19/1996
  • Issued: 09/02/1997
  • Est. Priority Date: 04/14/1995
  • Status: Expired due to Term
First Claim
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1. A device for deploying an expandable stent at a treatment site within a body;

  • comprising;

    a first catheter having a proximal end region and a distal end region;

    a stent retaining member disposed at the distal end region of the first catheter and including an inner layer extending distally beyond the first catheter, said member being turned back upon itself to form an outer layer extending toward the first catheter, said inner layer adapted to retain an expandable stent in a reduced state along an axial length of the stent with the stent located distally of the first catheter; and

    a moving means operable to displace the outer layer relative to the first catheter, thereby to displace the inner layer remove the member from its retaining relation to the stent, thus to release the stent for expansion at the treatment site;

    wherein a distal end of the first catheter is positioned near a proximal end of the stent when the inner layer of the stent retaining member retains the stent, to abut the stent and thereby prevent any substantial proximal migration of the stent as the retaining member is removed.

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