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US 8,540,758 B2Granted
Bifurcation stent and delivery system
OwnerVimal I. Nanavatiinventor
Life of this patent
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Abstract
The present invention is directed to a device comprising a catheter tube, which includes a round opening and two platinum radio-opaque markers on its distal end; a guide-wire; a balloon, which includes a wedge-shaped opening; and a stent, which includes an elliptical-shaped opening and three platinum radio-opaque markers. The invention is also directed to methods for using the device for deploying stents to treat bifurcation lesions.
Claims7
A device, comprising:
- a balloon catheter for accessing an internal volume of an artery that is divided into a first and second branch, the balloon catheter comprising a first catheter tube, a first balloon and a first stent, the first catheter tube, the first balloon and the first stent each having an opening;
- a first guide-wire for advancing the balloon catheter to a site of plaque buildup substantially near the first and second branch, such that the balloon catheter is substantially at the center of the plaque buildup in the first branch;
- a second guide-wire that is advanced through the first catheter tube to a position substantially near the center of the first balloon;
- at least one metal radio-opaque marker on the balloon catheter that is used as a guide to align the openings in the first catheter tube, the first balloon and the first stent, respectively, with an opening to the second branch;
- wherein the second guide-wire is advanced into the second branch through the openings in the first catheter tube, first balloon and first stent;
- wherein the first balloon is inflated to deploy the first stent, and then the first balloon is deflated;
- a third guide-wire that is advanced into the second branch;
- a second balloon catheter that is advanced using the third guide-wire to the second branch through the first stent, the second balloon catheter comprising a second catheter tube, a second balloon and a second stent;
- a fourth guide wire that is advanced into the first branch;
- a third balloon catheter that is advanced using the fourth guide wire to the site of the previously deployed first stent in the first branch, which comprises a third catheter tube and a third balloon;
- wherein when the second and the third balloons are inflated, whereby the second stent is deployed in the second branch;
- and
- wherein the second and third balloons are deflated and removed from the internal volume.
10 more elements
Dependencies are inferred from the claim text.