An endovascular graft is provided that includes a stent structure adapted to move between a collapsed and a deployed configuration. An endovascular graft material is mounted with respect to the stent structure. At least one lumen- or chute-forming structure is associated with the stent structure internal to the endovascular graft material. The at least one lumen- or chute-forming structure is adapted to move between a first position and a second position, wherein the at least one lumen- or chute-forming structure is rolled within itself in the first position, and wherein the at least one lumen- or chute-forming structure moves from the first position to the second position by unrolling. When in the second position, the at least one lumen- or chute-forming structure defines a passage having a greater cross-sectional area as compared to the first position. Stent-graft deployment to one or more branch arteries/vessels may be accomplished through the at least one lumen- or chute-forming structure. The present disclosure also provides advantageous methods for deploying the disclosed endovascular graft and delivery of stent-grafts to branch arteries/vessels therethrough.

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.

Various systems, devices, and methods for endovascular implants and placement thereof are disclosed. The implants include a proximal implant segment, a distal implant segment, connector struts connecting the proximal implant segment to the distal implant segment, and a side opening between the proximal implant segment and the distal implant segment. The implants can be used to create an arteriovenous fistula or connect one vessel of the body to another by placement of the proximal implant segment and the distal implant segment within the vessels to be connected. The implants can include one or more anchors for securing the implant in place with respect to the vessels of the body it is connecting. The implants can also include a continuous strut or ring at a distal edge of the proximal implant segment. Also disclosed are methods for percutaneous placement of the implants, and a device for percutaneous delivery.

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.

A stent-graft (20) comprises strut members (30) and a graft member (32), which is fixed to the strut members (30). The strut members (30) and the graft member (32) are arranged so as to define, when the stent-graft (20) is in a radially-expanded state: a main tube (40), which is shaped so as to define a main lumen (42); and a lateral tube (50), which (a) has (i) a distal end (52) and (ii) a proximal end (54) that is joined to a lateral wall (56) of the main tube (40) at a junction (60), (b) is shaped so as to define a lateral lumen (62) that is in fluid communication with the main lumen (42), and (c) defines a central longitudinal axis (64). The strut members (30) that define the lateral tube (50) are shaped so as to define two to four non-contiguous arcuate members (70), which (a) are centered around the central longitudinal axis (64), and (b) collectively subtend at least 150 degrees around the central longitudinal axis (64).

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.

A medical device for treating a target site within a lumen having an arcuate portion is provided. The medical device includes a first tubular portion comprising a proximal and distal end, and a second tubular portion comprising a proximal and distal end. A linking portion couples the first and second tubular portions, and an opening defined between the distal end of the first tubular portion and the proximal end of the second tubular portion. At least part of the linking portion is configured to conform to at least a portion of the arcuate portion of the lumen. Associated methods for using a medical device are also provided.

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.

An intravascular system having a first catheter having a first non-circular transverse cross-sectional configuration and a first delivery device configured for insertion into the lumen of the catheter. The first delivery device includes an implantable medical device and an elongated member supporting the first medical device such that the first elongated member and the first medical device are movable through the lumen of the first catheter. The first elongated member has a second non-circular transverse cross-sectional configuration corresponding to the first non-circular transverse cross-sectional configuration to thereby inhibit rotation of the first elongated member within the catheter and control orientation of the first medical device relative to the catheter.

Systems, devices and methods for treating lymphatic congestion are disclosed. In one method, a balloon is placed at or near the veno-lymph junction. The balloon is inflated and deflation through cycles of slow inflation and rapid deflation. In another embodiment, an arteriovenous fistula is created near the veno-lymph junction. Alternate embodiments may also include axial pumps, stents, or balloons in combination with the fistula. These devices and methods create an acceleration of the blood flow past the lymphatic duct which reduces local pressure via the Venturi effect and according to the Bernoulli principle which facilitates lymph entering into the bloodstream.