Bifurcated balloon catheters and methods of use

A bifurcated stent assembly for placing a bifurcated stent into a diseased bifurcated blood vessel, the bifurcated stent assembly comprising:

• a catheter hub;
• a proximal balloon hub;
• a distal balloon hub;
• a catheter tip;
• a catheter shaft comprising a proximal shaft and a distal shaft, wherein a proximal end of the proximal shaft is connected to the catheter hub and a distal end of the proximal shaft is connected to the proximal balloon hub, a proximal end of the distal shaft is connected to the distal balloon hub and a distal end of the distal shaft is connected the catheter tip;
• a bifurcated balloon assembly comprising a first balloon and a second balloon, wherein the first balloon and the second balloon are arranged substantially in parallel;
• a first lumen that extends from a first port of the catheter hub through the proximal shaft, the proximal balloon hub, the first balloon, the distal balloon hub, the distal shaft, and the catheter tip;
• a second lumen that extends from a second port of the catheter hub through the proximal shaft, and the proximal balloon hub to a distal opening in the proximal balloon hub;
• and
• a bifurcated stent comprising a main body portion, a first branch portion, and a second branch portion,
• wherein a proximal end of the first balloon is connected to the proximal balloon hub, a distal end of the first balloon is connected to the distal balloon hub, and a distal end of the second balloon is connected to the distal balloon hub, and
• wherein the main body portion is disposed around distal portions of the first balloon and the second balloon, the first branch portion is disposed around a proximal portion of the first balloon, and the second branch portion is disposed around a proximal portion of the second balloon.

A method for placing a bifurcated stent into a diseased bifurcated blood vessel comprising:

• advancing a bifurcated stent assembly over a guidewire to the bifurcated blood vessel through a first vessel, the bifurcated blood vessel comprising the first vessel, a second vessel, and a third vessel, the bifurcated stent assembly comprising:
• a catheter hub;
• a proximal balloon hub;
• a distal balloon hub;
• a catheter tip;
• a catheter shaft comprising a proximal shaft and a distal shaft, wherein a proximal end of the proximal shaft is connected to the catheter hub and a distal end of the proximal shaft is connected to the proximal balloon hub, a proximal end of the distal shaft is connected to the distal balloon hub and a distal end of the distal shaft is connected the catheter tip;
• a bifurcated balloon assembly comprising a first balloon and a second balloon, wherein the first balloon and the second balloon are arranged substantially in parallel, and wherein a proximal end of the second balloon has a contralateral tip;
• a first lumen that extends from a first port of the catheter hub through the proximal shaft, the proximal balloon hub, the first balloon, the distal balloon hub, the distal shaft, and the catheter tip;
• a second lumen that extends from a second port of the catheter hub through the proximal shaft, and the proximal balloon hub to a distal opening in the proximal balloon hub;
• and
• a bifurcated stent comprising a main body portion, a first branch portion, and a second branch portion,
• wherein a proximal end of the first balloon is connected to the proximal balloon hub, a distal end of the first balloon is connected to the distal balloon hub, and a distal end of the second balloon is connected to the distal balloon hub, and
• wherein the main body portion is disposed around distal portions of the first balloon and the second balloon, the first branch portion is disposed around a proximal portion of the first balloon, and the second branch portion is disposed around a proximal portion of the second balloon;
• advancing the bifurcated stent assembly into the second vessel until the contralateral tip clears the bifurcated blood vessel;
• retracting a contralateral guidewire from the proximal balloon hub, the contralateral guidewire extends from the distal shaft through the distal balloon hub, the second balloon, the contralateral tip, and the proximal balloon hub;
• extending the contralateral guidewire into the third vessel adjacent to the first vessel and the second vessel;
• advancing the second balloon and the second branch portion into the second vessel and simultaneously retracting the first balloon and the first branch portion into the first vessel, wherein the first balloon and the second balloon are not parallel;
• inflating the first balloon and the second balloon to expand the bifurcated stent against walls of the first vessel, the second vessel, and the third vessel;
• deflating the first balloon and the second balloon;
• advancing the first balloon and the second balloon into the second vessel;
• pulling the second balloon against the first balloon so that the first balloon and the second balloon are substantially parallel;
• and
• retracting the bifurcated stent assembly from the first vessel.