Vascular prosthesis includes a luminal graft component defining a graft fenestration, at least one support disk fenestration, and a moveable disk defining a moveable disk opening, wherein the graft fenestration, the support disk fenestration and the moveable disk opening are all aligned, and the moveable disk is sandwiched between the support disk and the luminal graft component or between two of the support disks. The moveable disk is moveable between the support disk and the luminal graft component. The support disk is fixed to the luminal graft component. The vascular prosthesis is implanted by a method that includes directing the vascular prosthesis to an aneurysm site of a patient, and then implanting a branch prosthesis through the graft fenestration and into an arterial branch, whereby the moveable disk opening moves within the support disk fenestration to properly align the branch prosthesis with the arterial branch.

A stent graft including a stent having a wall having at least one opening, an outer surface, and an inner surface and a covering of a composite material having a least one expanded fluoropolymer membrane and an elastomer is provided. The cover can be used to cover the outer and/or the inner surface of the stent. The expanded fluoropolymer membrane contains serpentine fibrils. In exemplary embodiments, the fluoropolymer is polytetrafluoroethylene. The composite material may be axially and/or circumferentially wrapped around the stent. The composite material is fold-free throughout its operating diameter range and exhibits a sharp increase in stiffness at a predetermined diameter. The stent graft can be designed to have a stop point in either a radial or axial direction. The stent graft can advantageously be implanted undersized with respect to a nominal diameter without having material infolding.

An improved medical device reduces the loss of longitudinal length during expansion of a stent-graft from a compressed state to an expanded state. For example, the stent-graft is placed over a cover that provides resistance to expansion of the balloon during inflation, which reduces longitudinal compressing forces exerted on the stent-graft.

An endograft (102) includes a stent structure. An optical shape sensing (OSS) system (104) is associated with the endograft and is configured to measure shape, position and/or orientation of the stent structure. The OSS system (104) is connected to the stent structure and removable in a plurality of ways. Methods for deployment and removal of the OSS system are also provided.

An endoprosthesis has an expanded state and an unexpanded state, the endoprosthesis includes a stent, wherein the stent has a first end, a second end, an inner surface defining a lumen, an outer surface, and a thickness defined between the inner surface and the outer surface; and a stent end covering disposed at one of the first and second ends, the stent end covering including a polymeric coating that includes a base and a plurality of protrusions, the base including a first major surface facing the outer surface of the stent, the base further including a second major surface from which each of the plurality of protrusions extends outwardly, the first major surface opposing the second major surface, wherein the protrusions are arranged in a micropattern. Methods of making and using an endoprosthesis are provided.

A covered stent, including a proximal end surface, a distal end surface and a peripheral surface located between the proximal end surface and the distal end surface, the peripheral surface including an inner surface and an outer surface. The outer surface is covered with a first coating membrane, and the inner surface is covered with a second coating membrane. The covered stent further includes a stent main body, which is between the first coating membrane and the second coating membrane. At least one of two ends of the first coating membrane and the second coating membrane fold inward or outward so as to wrap at least one from among the proximal end surface and the distal end surface.

The present disclosure relates generally to stents, systems, and methods for gastrointestinal treatment. In some embodiments, a stent may include a tubular scaffold having a first end opposite a second end, wherein a lumen extends between the first and second ends. The tubular scaffold may include a flared section and a medial section extending from the flared section, wherein a first diameter of the flared section is greater than a second diameter of the medial section. The stent may further include a liner extending partially along a surface of the tubular scaffold, wherein the liner is spaced from an anchoring region of the flared section to promote tissue ingrowth with the flared section.

A stent-graft system (100) includes a mainbody stent-graft (1), an outer branch (2), and at least one inner branch (3, 4). The mainbody stent-graft (1) is a tubular structure with covering membrane (102) on a surface thereof, forming a radially recessed concave portion (103) thereon. The outer branch (2) extends outside the mainbody stent-graft (1), with one end attached to a side wall of the concave portion (103). The inner branch (3, 4) is attached to the inside wall of the mainbody stent-graft (1), with an outer opening (31, 41) on the side wall of the concave portion (103), wherein the outer opening (31, 41) is distal to the inner opening (21).

A device includes a first end portion, a second end portion, an intermediate portion between the first end portion and the second end portion, and a graft material coupled to at least the intermediate portion. The first end portion has a first end diameter. The second end portion has a second end diameter larger than the first end diameter. The intermediate portion tapers between the first end portion and the second end portion. A method of diverting fluid flow from a first passage to a second passage comprising deploying the device in a third passage between the first passage and the second passage, expanding the first end portion against sidewalls of the first passage, and expanding the second end portion against sidewalls of the second passage.

The presently described stent-graft includes a stent frame forming a cavity and frame wires extending around the stent frame perimeter. The stent frame is formed such that the cavity cross sectional area decreases along a first length of a flow restricting section to a cavity minimum cross sectional area and increases along a second length of the flow restricting section. The first length extends from a cavity proximal cross sectional area to the cavity minimum cross sectional area and the second length extends from the cavity minimum cross sectional area to a cavity distal cross sectional area. When placed within a patient's aorta, the stent-graft may help the treatment of congestive heart failure by increasing blood flow to the kidneys. The provided stent-graft may also be adapted for placement within a patient's urethra to help the treatment of urinary incontinence.