Methods for deploying stents in bifurcations

摘要

A method of deploying a stent in a bifurcation includes introducing two guidewires through the main vessel and using the two guidewires for guiding a dual lumen catheter carrying a stent first to an initial position proximal to the stent deployment position, retracting one wire, and projecting it from the catheter and through a side of the stent a branch guidewire into the second branch vessel, and then moving the catheter to the predetermined deployment position while guided by the main guidewire in the first branch vessel, and the branch guidewire in the second branch vessel. The stent is then expanded, and the catheter is removed with the stent remaining in its deployed position An alternative embodiment includes introducing one wire, advancing the system over the one wire and subsequently introducing the second wire.

主权项

1. A method of deploying a stent in a bifurcation of a main vessel which separates into first and second branch vessels, the method comprising:
first, inserting a first guidewire into the main vessel such that the first guidewire extends across the bifurcation and into the first branch vessel; providing a stent delivery device including a main lumen for receiving the first guidewire, a branch lumen for receiving a second guidewire, and an expandable stent disposed thereon; after inserting the first guidewire into the main vessel, inserting the second guidewire into the branch lumen of the stent delivery device such that a distal end of the second guidewire is adjacent to a distal end of the branch lumen; after the second guidewire is inserted into the branch lumen, advancing the stent delivery device over the first guidewire through the main vessel to a position adjacent to the bifurcation; without retracting the second guidewire, advancing the second guidewire through the distal end of the branch lumen and into the second branch vessel; advancing the stent delivery device over the first guidewire and the second guidewire to a stent deployment position adjacent the bifurcation; and radially expanding the stent with at least a proximal end of the stent extending into the main vessel.