Balloon catheters for treating a diseased bifurcated blood vessel that includes 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, and a bifurcated balloon assembly with a first balloon and second balloon that are substantially parallel. 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 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.

An endovascular stent-graft includes a generally tubular body configured to assume a radially-compressed delivery state and a radially-expanded deployment state. The body includes a flexible stent member, and a tubular fluid flow guide attached to the stent member. The body includes a compliance-restoration body portion extending axially along a portion of the body, and including portions of the stent member and fluid flow guide. When the body is in the radially-expanded deployment state, the compliance-restoration body portion characterized by a greatest diastolic outer radius when the body is internally pressurized by fluid having a pressure of 80 mmHg, and radially expandable to a greatest systolic outer radius when the body is internally pressurized by fluid having a pressure of 120 mmHg. The greatest systolic outer radius (R.sub.S) is at least 5% greater than the greatest diastolic outer radius.

An endovascular graft, which is configured to conform to the morphology of a vessel to be treated, includes a tubular ePTFE structure; an inflatable ePTFE structure disposed over at least a portion of the ePTFE tubular structure; and an injection port in fluid communication with the inflatable ePTFE structure for inflation of the inflatable ePTFE structure with an inflation medium. The inflatable ePTFE structure may be longitudinally disposed over the tubular ePTFE structure. The ePTFE structure may be a bifurcated structure having first and second bifurcated tubular structures, where the inflatable ePTFE structure is disposed over at least a portion of the first and second bifurcated tubular structures.

An introducer assembly includes a distal sheath and a proximal sheath. A splitting element is located at a proximal end of the distal sheath and is arranged to split the distal sheath in a distal direction, so as to deploy first a branch element of a medical device and thereafter the distal end of the medical device. The proximal sheath can then be retracted to release the proximal end of the medical device. Deployment of the medical device from the branch element first enables accurate positioning of the branch element prior to deployment of the main body portion of the medical device.

The present disclosure is directed to a branched endoprosthesis comprising a graft component and at least one support component. In various embodiments, the branched endoprosthesis comprises a body portion and a plurality of leg portions, wherein the legs are in an aligned configuration for ease of cannulation. In various embodiments, at least one leg is in an open configuration for ease of cannulation. Cannulation methods are also described.

A stent graft includes a tubular aortic component that defines a lumen and a fenestration with a pocket at the fenestration. At least one proximal tunnel graft extends proximally within the lumen from the proximal opening of the pocket and is secured at a proximal end to the tubular component, and at least one distal tunnel graft extends distally within the lumen from the distal opening of the pocket and is secured at a distal end to the tubular aortic component. The stent graft can further include at least one branch stent graft, each of which extends through the fenestration and within at least one of the proximal tunnel graft or the distal tunnel graft. The stent graft can be implanted in a patient to thereby treat an aneurysm, such as a suprarenal or thoracoabdominal aortic aneurysm.

The present invention is directed to vascular implants and methods for fabricating the same. The implantable devices include but are not limited to stents, grafts and stent grafts. In many embodiments, the devices include one or more side branch lumens interconnected with the main lumen.

A stent delivery system includes a self expanding stent positioned about a distal support segment of a catheter, which includes a proximal segment. A constraint has a wrapped configuration, which has a hollow elongated shape, and an unwrapped configuration, which is a continuous length of a strip. The stent is in contact with, and held in a compressed state by, the constraint in the wrapped configuration, and the stent is in an expanded state out of contact with the constraint in the unwrapped configuration. The constraint may move from the wrapped configuration toward the unwrapped configuration responsive to tension in a control line connected to one end of the strip.

A vascular graft suitable for implantation, and more particular to a vascular graft having an expandable outflow region for restoring patency of the graft after implantation into a body lumen.

The present disclosure relates to an endoluminal prosthesis, such as a stent graft that includes one or more fenestrations to accommodate endovascular disease, such as an aneurysm in cases where one or more side branches is involved. In one aspect, the prosthesis includes fenestrations that are pivotable to accommodate the dynamic geometry of the aortic branches.