STENT DELIVERY SYSTEM WITH ANCHORING GUIDE WIRE AND METHOD FOR DEPLOYING A SELF-EXPANDING STENT

摘要

A stent delivery system includes a delivery catheter and an anchoring guide wire with an associated expandable member designed to expand within the patient's body vessel to anchor at least a distal portion of the delivery catheter within the body vessel. The anchoring of the distal portion of the delivery catheter helps to prevent a self-expanding stent, mounted on the delivery catheter, from jumping longitudinally in the body vessel as the outer restraining member of the catheter is being retracted since a portion of the self-expanding stent remains pressed against the wall of the body vessel allowing the stent to expand laterally with the vessel.

主权项

1. A stent delivery system for placing a stent within a body vessel, comprising:
a delivery catheter including an inner member having a distal portion and a stent mounting region for mounting a stent thereon, the inner member having an anchoring guide wire lumen with an exit port; a stent mounted in the stent mounting region of the inner member; and an anchoring guide wire having an expandable member which can pass through the exit port of the anchoring guide wire lumen, the expandable member being expandable outside of the inner member to press at least a portion of the distal portion of the inner member against the wall of the body vessel.