×

STENT DELIVERY SYSTEM

  • US 20110196472A1
  • Filed: 03/29/2011
  • Published: 08/11/2011
  • Est. Priority Date: 09/30/2008
  • Status: Abandoned Application
First Claim
Patent Images

1. A stent delivery system comprising:

  • a shaft section through which extends a guide wire lumen which is open at opposite ends for receiving a guide wire to guide the stent delivery system to a desired position within a living body;

    a sheath encircling at least a distal portion of the shaft section so that an inner surface of the sheath faces an outer surface of the shaft section, with a space between the inner surface of the sheath and the outer surface of the shaft section, the sheath being movable in a proximal direction relative to the shaft section;

    a self-expandable stent possessing a central axis and a proximal end, the stent encircling the distal portion of the shaft section and being positioned in the space between the inner surface of the sheath and the outer surface of the shaft section so that the sheath covers the stent;

    the stent being compressed inwardly towards the central axis of the stent while covered by the sheath, and automatically expanding outwardly into a pre-compression shape when the sheath is moved in the proximal direction relative to the shaft section to a position no longer covering the stent;

    the stent comprising a plurality of through openings at a proximal end of the stent;

    a breakable fixing wire comprising a first portion and a second portion both fixed to the shaft section so that the first portion and the second portion of the breakable fixing wire move together as a unit with the shaft section, the breakable fixing wire comprising a third portion spaced from the first portion and the second portion, the third portion of the breakable fixing wire passing through the through openings at the proximal end of the stent so that the breakable fixing wire engages the stent and holds the stent relative to the shaft section; and

    means for breaking the fixing wire to release the stent from engagement by the other portion of the fixing wire, the third portion of the fixing wire being a portion of the fixing wire between the first portion and the second portion.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×