Patent ID: 8012199
Filing Date: 2011-09-06
Classification: A61F

Abstract:
1. Method for fitting a radially expandable prosthesis to the walls of branches of conduits forming a bifurcation, said bifurcation comprising a main conduit and a collateral conduit that branches off from a wall of the main conduit, comprising the following stages: providing a first endolumenal device and a second endolumenal device, the second endolumenal device comprising: positioning a first guidewire in the main conduit so that it passes the bifurcation, and positioning a second guidewire in the collateral conduit, said guidewires being positioned in such a way as to follow an initial proximal section of path together and second distal sections of path that diverge at said bifurcation; fitting said first endolumenal device equipped with a radially expandable prosthesis onto a proximal end of the second guidewire, so that said second guidewire is received in a guidewire lumen of the endolumenal device through a distal guidewire port located on the tip of its elongated body; inserting said first endolumenal device into said conduits following the proximal and then the distal sections of path of the second guidewire in order to position the radially expandable prosthesis in the collateral conduit so that its proximal edge is positioned near a mouth of said collateral conduit; activating said expansion device so that said prosthesis is in its radially expanded condition and fixed by pressure to the wall of the collateral conduit; withdrawing said expansion device and the first endolumenal device from the second guidewire until it has been removed from the conduits; fitting said second endolumenal device equipped with a radially expandable prosthesis onto a proximal end of the first guidewire so that said first guidewire is received in a guidewire lumen through a distal guidewire port located on the tip of the second endolumenal device; fitting said second endolumenal device onto a proximal end of the second guidewire so that said second guidewire is received in the guidewire lumen through a distal guidewire port located on the portion of the elongated body that lies between a distal and a proximal end of the expansion device; inserting said second endolumenal device into the main conduit and slid along the proximal section of path of the guidewires until a distal portion of the second endolumenal device, located between the tip of said second endolumenal device and the distal guidewire port of the second guidewire lumen, is positioned beyond the bifurcation; activating the expandable device of said second endolumenal device so as to bring said prosthesis into its radially expanded condition and fixed by pressure to the wall of the main conduit and straddling the bifurcation; withdrawing said expansion device and then withdrawing the second endolumenal device from the guidewires until it has been removed from the conduits.