Devices are provided with an internal dimension that can be reduced and increased in vivo. In one example, an interatrial shunt for placement at an atrial septum of a patient’s heart includes a body. The body includes first and second regions coupled in fluid communication by a neck region. The body includes a shape-memory material. The body defines a passageway through the neck region for blood to flow between a first atrium and a second atrium. The first and second regions are superelastic at body temperature, and the neck region is malleable at body temperature. A flow area of the passageway through the neck region may be adjusted in vivo.

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 sealable vascular endograft system for placement in a vascular defect includes a delivery catheter shaped to be disposed within a blood vessel. The delivery catheter includes an implant delivery catheter sheath defining an implant delivery catheter lumen and an endovascular implant removably disposed within the implant delivery catheter lumen in a compressed or folded state for delivery thereof to the vascular defect. The endovascular implant includes a tubular implant body and a sealable circumferential collar including a variable sealing device and a control lead traversing from the variable sealing device to a user and controlling variability of the variable sealing device by the user. The sealing device and the control lead cooperate to reversibly expand and contract the sealable circumferential collar to circumferentially adjust during deployment thereof to achieve a repositionable fluid-tight seal between the sealable circumferential collar and the internal walls proximal to the vascular defect.

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 invention includes modifications of a Z stent to allow the top struts of two Z stents deployed in the vena cava in a bilateral relationship, to interleave. One embodiment includes Z stents with angled top surfaces. A second embodiment includes Z stents having an intermediary suture but lacking the top suture in the topmost stent of a stacked stent module.

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.

A heart valve assembly includes an inner frame comprising a graft covering housing a prosthetic heart valve, wherein the graft covering extends around the prosthetic heart valve for providing sealing to the heart valve, an outer frame formed from a metallic material and defining a gridded configuration, and being secured to the graft covering by a plurality of stitches, and a sealing material positioned externally to the outer frame for providing sealing between the outer frame and a patient's anatomical wall to prevent paravalvular leaks. The sealing material includes a plurality of radially extending fibers that extend outwardly of the outer frame. The graft covering is made of polyester, polytetrafluoroethylene, expanded polytetrafluoroethylene, or a polymer.

The techniques of this disclosure generally relate to an assembly including a single branch stent device and a modular stent device configured to be coupled to the single branch stent device. The single branch stent device includes a main body and a branch coupling extending radially from the main body. The modular stent device includes a main body configured to be coupled inside of the main body of the single branch stent device, a bypass gate extending distally from a distal end of the main body of the modular stent device, and an artery leg extending distally from the distal end of the main body of the modular stent device.

A device for inducing weight loss in a patient includes a tubular prosthesis self-expandable from a collapsed position in which the prosthesis has a first diameter to an expanded position in which the prosthesis has a second, larger, diameter. In a method for inducing weight loss, the prosthesis is placed in the collapsed position and inserted into a stomach of a patient. The prosthesis is allowed to self-expand from the collapsed position to the expanded position and into contact with the walls of the stomach, where it induces feelings of satiety and/or inhibits modulation of satiety-controlling factors such as Ghrelin.