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Delivery apparatus for a self-expanding stent

  • US 6,773,446 B1
  • Filed: 08/02/2000
  • Issued: 08/10/2004
  • Est. Priority Date: 08/02/2000
  • Status: Expired due to Term
First Claim
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1. A delivery apparatus for a self-expanding stent, said apparatus comprising:

  • a. an outer sheath comprising an elongated tubular member having distal and proximal ends; and

    b. an inner shaft located coaxially within said outer sheath, said outer sheath covering substantially all of said inner shaft, said shaft having a distal end, a proximal end and a longitudinal axis extending therebetween, said shaft further including a distal tip having a proximal end attached to said distal end of said shaft and a distal end extending therefrom, said distal tip including a proximal end having a diameter equal to the inner diameter of the outer sheath, a distal end having a diameter less than the inner diameter of the outer sheath, a rounded section having a diameter greater than the inside diameter of the outer sheath and configured to prevent said outer sheath from moving distally over the distal tip positioned between the proximal end and the distal end, and a proximally tapered section, extending between the rounded section and the distal end, said distal tip being configured to have a flexible leading edge that gradually decreases in flexibility in the proximal direction.

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