Devices and methods for treating branching blood vessels
AssigneeRestore Endosystems, LLC
InventorStefan Georg Schreck
Life of this patent
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Abstract
Described herein are systems and methods for the treatment of branching blood vessels. The system can be introduced percutaneously or by surgical cutdown into a patient's arterial system. The bifurcation from the aorta to the iliac arteries (aortic bifurcation) is used as an example of a branching blood vessel which can be treated with the systems described herein. Also, described herein are methods for assembling the medical devices.
Claims16
A balloon catheter for treating a diseased bifurcating blood vessel, the balloon catheter comprising:
- a proximal hub;
- a shaft;
- a distal hub;
- a bifurcated balloon assembly comprising a first balloon having a proximal segment and a distal segment, and a second balloon having a proximal segment and a distal segment;
- and
- a first guidewire lumen and a second guidewire lumen,
- wherein the first balloon and the second balloon are arranged substantially in parallel,
- wherein the proximal segment of the first balloon is connected to the shaft, the distal segment of the first balloon is connected to the distal hub, and the distal segment of the second balloon is connected to the distal hub, and
- wherein the first guidewire lumen extends from the proximal hub through the shaft, the first balloon, and the distal hub, and the second guidewire lumen extends from the proximal hub through the shaft, the first balloon, the distal hub, and the second balloon.
A method of deploying a bifurcated stent from a balloon catheter for treating a diseased bifurcating blood vessel, the balloon catheter comprising:
- a proximal hub;
- a shaft;
- a distal hub;
- a bifurcated stent crimped to a bifurcated balloon assembly, the bifurcated balloon assembly comprising a first balloon having a proximal segment and a distal segment, and a second balloon having a proximal segment and a distal segment;
- a first guidewire lumen and a second guidewire lumen;
- a first guidewire that extends through the first guidewire lumen and exits a distal end of the balloon catheter;
- and
- a second guidewire that extends through the second guidewire lumen through the shaft, the first balloon, and the distal hub and then exits a first opening of the distal hub to form a loop distal to the distal hub and the second guidewire enters a second opening of the distal hub and extends through the second guidewire lumen to the second balloon and exits a proximal end of the second balloon,
- wherein the bifurcated stent comprises a main body stent having a proximal end and a distal end and two branch stents in at least two steps, wherein a first step comprises expanding the two branch stents and the main body stent with the first and second balloons.
A method of crimping a balloon-expandable bifurcated stent comprising a main body stent and two branch stents onto a bifurcated balloon assembly of a balloon catheter for treating a diseased bifurcating blood vessel, the balloon catheter comprising:
- a proximal hub;
- a shaft;
- a distal hub;
- the bifurcated balloon assembly comprising a first balloon having a proximal segment and a distal segment, and a second balloon having a proximal segment and a distal segment;
- and
- a first guidewire lumen and a second guidewire lumen,
- wherein the first balloon and the second balloon are arranged substantially in parallel,
- wherein the proximal segment of the first balloon is connected to the shaft, the distal segment of the first balloon is connected to the distal hub, and the distal segment of the second balloon is connected to the distal hub,
- wherein the first guidewire lumen extends from the proximal hub through the shaft, the first balloon, and the distal hub, and the second guidewire lumen extends from the proximal hub through the shaft, the first balloon, the distal hub, and the second balloon, and
- wherein the method comprises of a first step in which the main body stent and the two branch stents are compressed inward toward their respective centerlines, and a second step in which the main body stent and the two branch stents are compressed toward a common centerline.
Dependencies are inferred from the claim text.