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Temporary stent system

  • US 6,371,953 B1
  • Filed: 04/18/2000
  • Issued: 04/16/2002
  • Est. Priority Date: 03/30/1993
  • Status: Expired due to Term
First Claim
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1. A stent delivery system comprising:

  • a catheter having distal and proximal ends, said catheter defining at least one lumen extending therethrough and having two longitudinally displaced openings extending from the at least one lumen to an outer surface of the catheter;

    a self expanding coil stent mounted on the outer surface of said catheter, said stent having proximal and distal ends, said stent having a mounted configuration with a first region having coils separated by a first spacing and a second region having coils separated by a second spacing, the first spacing being smaller than the second spacing;

    restraining members structurally distinct from said stent and holding each of the proximal and distal ends of the stent to the catheter;

    at least one release wire positioned in and extending longitudinally through the at least one lumen, wherein said restraining members extend through the longitudinally displaced openings to hold both ends of the stent, so that as the at least one release wire is withdrawn proximally, the coils of the stent self-unwind; and

    said catheter defining one or more grooves positioned between the longitudinally displaced openings for retaining said stent in the mounted configuration with the first spacing at the first region and the larger second spacing at the second region.

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