Universal endovascular grafts are provided for evaluation and repair of damaged or aneurismal blood vessels. More particularly, the present invention relates to universal fenestrated and universal branched endografts for repair of blood vessels with branches, methods for implanting the endografts in the vessel and for making connection with one or more branches. The universal fenestrated endografts have a body with a first end, a second end, a first wall, a second wall, and an interior passage or lumen. The body further includes openings in communication with the passage at the first and second ends and one or more lateral fenestrations in communication with the lumen. The body further has a necked portion between the ends and a cannulation member. The universal branched endografts have a tubular body with a main lumen and four branch lumens. A large branch extends from the body. The four lumens are positioned about a circumference of the tubular body.

The stent graft includes a main body and an external coupling. The main body extends along a longitudinal axis and includes proximal and distal ends. The external coupling extends away from the main body and defines an opening having a center. The main body includes a first bracketing stent extending about a proximal side of the external coupling. The first bracketing stent includes first and second peaks. The first peak is circumferentially aligned with the center of the external coupling. The first peak is proximal the second peak about the main body along the longitudinal axis.

Provided is a stent that can be easily and reliably placed in a branched portion of a biological lumen. A stent is configured to be placed within a biological lumen and comprises: a first skeleton which is for placement within a first lumen of the biological lumen, and which is made of a wire material and formed into a tubular shape; and second skeletons which are for placement within a plurality of second lumens branched from the first lumen, and which are made of a wire material different from that of the first skeleton and whish are formed into a tubular shape. The plurality of second skeletons are provided so as to branch from one end section of the first skeleton and are engaged with each other at the branched portion.

Devices and methods divert blood flow from a first vessel to a second vessel and maintain blood flow in the first vessel. The device includes a first segment and a second segment. The first segment is configured to anchor in the first vessel. The first segment includes a window to allow blood to flow into the first segment, through the window, and distal in the first vessel. The second segment is configured to anchor in the second vessel. The second segment is configured to allow blood to flow into the first segment, through the second segment, and into the second vessel.

Methods and apparatuses to place a prosthesis within a receiving structure are provided. A delivery apparatus includes an elongated support member including a support member distal end. A stop cap is disposed at the support member distal end and includes a stop cap transverse dimension larger than an inner diameter of a receiving lumen of the receiving structure. An elongated prosthesis-positioning member extends along the support member and stop cap so a distal surface of the prosthesis-positioning member is disposed at a position longitudinally coincident with a portion of the stop cap. A sheath comprises a sheath lumen receiving the prosthesis-positioning member so the sheath translates longitudinally relative to the prosthesis-positioning member. The delivery apparatus has a loaded configuration in which the prosthesis is received in the sheath lumen with a proximal end of the prosthesis abutting the prosthesis-positioning member distal surface.

A stent system may include a stent including a first leg having a first end fixedly attached to the distal end of a main body portion and extending distally from the distal end of the main body portion in a deployed configuration, and a second leg having a first end fixedly attached to the distal end of the main body portion and extending distally from the distal end of the main body portion in the deployed configuration. The second leg may extend proximally from the distal end of the main body portion in a delivery configuration. A stent system may include a bifurcated delivery sheath and two guidewires for delivery of two stents at the same time. A method of treating a body lumen may include delivering a contrast fluid including an anti-gas agent while implanting a stent in the body lumen.

The devices and methods described herein include an implantable body lumen fluid flow modulator including an upstream flow accelerator separated by a gap from a downstream flow decelerator. The gap is a pathway to entrain additional fluid from a branch lumen(s) into the fluid stream flowing from the upstream flow accelerator to the downstream flow decelerator.

The techniques of this disclosure generally relate to a modular assembly including first and second stent-grafts. The first stent-graft includes a body portion having a first diameter and a waist portion having a second diameter less than the first diameter. The waist portion is at a distal end of the first stent-graft. The second stent-graft includes a captured proximal portion configured to be located within the first stent-graft. The captured proximal portion includes a seated portion configured to be located proximal to the waist portion. The seated portion has a third diameter greater than the second diameter to form a mechanical interlock between the first stent-graft and the second stent-graft.

A stent for use in a medical procedure having opposing sets of curved apices, where the curved section of one set of apices has a radius of curvature that is greater than the curved section of the other set of apices. One or more such stents may be attached to a graft material for use in endovascular treatment of, for example, aneurysm, thoracic dissection, or other body vessel condition.

Aneurysms are treated by placing a scaffold across an aneurysmal sac to provide a blood flow lumen therethrough. An aneurysmal space surrounding the scaffold is filled with one or more expandable structures which are simultaneously or sequentially expanded to fill the aneurysmal space and reduce the risk of endoluminal leaks and scaffold migration. The expandable structures are typically inflatable and delivered by delivery catheter, optionally with an inflation tube or structure attached to the expandable structure.