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Pull back stent delivery system

  • US 5,733,267 A
  • Filed: 05/29/1996
  • Issued: 03/31/1998
  • Est. Priority Date: 04/05/1995
  • Status: Expired due to Term
First Claim
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1. A delivery system for implantation of a medical device in a vessel, comprising:

  • a medical device; and

    an elongate flexible catheter means having proximal and distal ends for delivering a medical device to a predetermined location in a vessel of a patient, the elongate flexible catheter means being further comprised of;

    an inner shaft which carries the medical device near its distal end;

    a middle pull back shaft concentrically arranged around the inner shaft; and

    an outer stiffening shaft concentrically arranged around the middle pull back shaft, the inner and outer shafts being permanently connected at their proximal ends to prevent any axial movement of the inner shaft with respect to the outer shaft such that the shafts constitute a single delivery catheter,wherein the middle pull back shaft is retracted relative to the inner shaft and the stiffening shaft to deploy the medical device.

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