The invention relates to generally to a vascular access graft that includes a magnetic element disposed about a flow tube for guiding a blood flow between an arterial end adapted for arterial anastomosis to a portion of an artery, and a venous end adapted for venous anastomosis to a portion of a vein. The magnetic element may include a plurality of magnets disposed about the flow tube so that a magnetic field may be applied to blood flowing therein; the magnetic element may alternatively include a circuitry configured to generate a magnetic field applied to the flow tube.

An endoprosthesis may include an expandable framework including an anchoring portion and a body portion extending axially from the anchoring portion, the body portion having a plurality of body cells; and a polymeric cover disposed on at least a portion of the expandable framework. The anchoring portion includes a first transverse flange and a second transverse flange proximate the first transverse flange, the first and second transverse flanges being configured to secure the anchoring portion at an orifice of a body lumen. The body portion includes a window through a side of the body portion, the window occupying space equivalent to at least two of the plurality of body cells. The window is devoid of the polymeric cover and any other structure within a perimeter of the window.

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 techniques of this disclosure generally relate to an assembly including a single multibranch stent device. The single multibranch stent device includes a main body, a proximal coupling extending radially from the main body, and a distal coupling extending radially from the main body. The main body, the proximal coupling, and the distal coupling are permanently coupled to one another and the single multibranch stent device is a single piece. By forming the single multibranch stent device as a single piece, the single multibranch stent device can be deployed in a single deployment thus simplifying the deployment procedure.

A variable flow stent is described for use with AV fistulas, TIPS procedures or dialysis grafts. The flow may be varied by adjusting the diameter of the stent. Embodiments include: a covered stent having a secondary chamber that functions as an air or fluid bladder; an expandable chamber within an interior stent covering; a retractable jack device with hooks that engage (snag) opposing walls of the stent; and, a stent with a hollow chamber or pocket in the interior stent covering into which an expandable balloon can be inserted. A self-healing valve is described for inflating or deflating expandable elements within the stent and may be implemented using a self-healing membrane. A radiopaque collar may be used to provide a marker surrounding the self-healing valve. If under-shunting or over-shunting occurs over time, the variable diameter stent may be adjusted using a second procedure.

The present application discloses a covered stent and a method for navigating the covered stent to a branch vessel, the covered stent comprising a main body and at least one lateral side branch connected to the main body, wherein the lateral side branch is flexible and expandable. A system of covered stents and a method for interconnecting the covered stents is also disclosed.

The present invention comprises a highly conformable stent graft with an optional portal for a side branch device. Said stent graft comprises a graft being supported by a stent, wherein said stent comprises undulations each which comprise apices in opposing first and second directions and a tape member attached to said stent and to said graft such that the tape member edge is aligned to the edge of the apices in the first direction of the each of the undulations, thus confining the apices in the first direction of the undulations to the graft and wherein the apices in the second direction of the undulation are not confined relative to the graft; wherein said graft forms unidirectional pleats where longitudinally compressed and wherein said apices in the first direction of said undulation is positioned under an adjacent pleat when compressed. The invention also discloses and claims methods of making and using said highly conformable stent graft and method of making the optional portal.

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 magnet assisted surgical device, system, and method employs magnetic sections, catheters, and guidewires to modify tubular stentgrafts in-situ. One example application provides a more reliable way for surgeons to modify stentgrafts insitu to allow blood flow to continue to branching blood vessels that would otherwise be blocked by the stentgraft itself. One such method includes placing a tip section of the device in the desired location, deploying a stentgraft, placing a magnetic device inside the stentgraft, connecting the magnetic device to the tip section, and excising the portion of the stentgraft held between the magnet and the tip section.

A device and method for repair of a patient's aorta is disclosed. The device includes a first component including an outer diameter equal to a first diameter, a second component attached to a distal end of the first component, and a plurality of third components positioned in a chamber defined in the second component. The second component includes a proximal surface extending outwardly from the distal end of the first component, and a plurality of openings defined in the proximal surface. Each third component includes a passageway extending inwardly from an opening of the plurality of openings defined in the proximal surface. Each passageway is sized to receive a tubular conduit, and the proximal surface has an outer edge that defines a second diameter greater than the first diameter.