Patent ID: 8267988

Claim:
Method for delivering an expandable prosthetic device comprising the steps of: advancing a main body guidewire into a main vessel; advancing a side branch guidewire into a side branch vessel; providing a catheter assembly comprising a first catheter having opposite proximal and distal catheter portions and a catheter main guidewire lumen; an expandable main body device disposed along the distal catheter portion and having a first open end, a second open end, a wall extending from the first open end to the second open end, a lumen extending from the first open end to the second open end, at least one side opening in the wall; a guidewire tube having a first end, a second end, and a lumen, the guidewire tube extending through the expandable main body device lumen between at least the at least one expandable main body device side opening and a point proximal to the second open end; and a constraining sleeve disposed around and compressing the expandable main body device onto a portion of the guidewire tube extending through the expandable main body device lumen; backloading the catheter main guidewire lumen of the first catheter and the lumen of the expandable main body device onto the main body guidewire; backloading the guidewire tube onto the side branch guidewire; removing the guidewire tube from the compressed expandable main body device; advancing the first catheter and the expandable main body device into the main vessel and aligning the at least one side opening with the side branch vessel; expanding the expandable main body device by releasing the constraining sleeve; and removing the first catheter.