A cerebral aneurysm stent (1) of the present invention comprises a hollow tubular main body (10) and a coil support (20) integrally formed with the main body (10) at one end of the main body (10) in the longitudinal direction, wherein the coil support (20) comprises a closed structure (21) with respect to the radially inner side of the cerebral aneurysm stent (1), the closed structure (21) being located at an outer end portion of the cerebral aneurysm stent (1) in the longitudinal direction.

To fix an intersection at a stent, a stent is configured such that multiple strands are woven in a spiral shape, two crossing strands are fixed by a fixing material having rubber elasticity at an intersection between the strands.

A prosthetic mitral valve includes a stent frame and an anchor assembly coupled to and peripherally surrounding the stent frame. The anchor assembly includes atrial anchors on the inflow end, ventricular anchors on the outflow end, and a central waist portion disposed therebetween. The anchor assembly generally defines an hourglass shape wherein the atrial and ventricular anchors flare radially outward and the central waist portion has a relatively smaller diameter. The prosthetic valve may include a gasket disposed peripherally around the central waist portion to seal the space between the body of the valve and the native valve annulus to prevent paravalvular leakage without increasing the profile of the valve to allow for smooth insertion into and deployment from a delivery device. The prosthetic valve may alternatively include a sealing fabric surrounding the anchor assembly defining a radial protrusion around the central waist portion to seal the native annulus.

A stent and a securely-installed artificial valve replacement device having the same, the stent being of a cylindrical structure; the top of the stent is provided with a fixed ear (60); the fixed ear (60) has a neck portion (601) connected to the top of the stent, and a head portion (602) engaged with the fixed head of the stent; the head portion (602) has a bending structure for improving the overall radial thickness; and the artificial valve replacement device is comprised of a stent and a prosthetic valve fixed on the stent. The stent with a bending structure overcomes the problem of easily disengaging from the fixed head of the stent, while not affecting the release of the stent.

A stent includes a high radial force segment and a highly flexible segment, where the diameters of the high radial force segment and the highly flexible segment are different. For example, the stent may be formed from a tube having varying diameters as it extends distally combined with increased strut density to achieve increased flexibility distally while reducing loss of radial stiffness. The stent may further be placed with an additional stent segment, where the additional stent segment has a radial force similar to the radial force of the highly flexible force segment.

A prosthetic heart valve may include a stent, a valve assembly, a flange, and a plurality of coupling tubes. The stent may have a collapsed condition, an expanded condition, and a plurality of cells arranged in circumferential rows, the stent having a longitudinal axis, an inflow end and an outflow end. The valve assembly may be disposed within the stent. The flange may comprise a plurality of braided wires and may have a flared portion. The plurality of coupling tubes may couple the flange to the stent so that the flared portion is adjacent the inflow end of the stent. Each of the coupling tubes may have a first end receiving corresponding ones of the braided wires and a second end coupled to a corresponding portion of the stent.

A low pressure gradient prosthetic heart valve for implant in a human. The valve includes a support frame with undulating inflow cusps and outflow commissure posts to which flexible leaflets attach and coapt in a flow area. The commissure posts angle outward in a neutral state to widen the outflow orifice area. Also, the leaflets are designed to fit within the support frame and expand outward in a valve open state without creating a shelf or belly that would restrict flow.

Methods for securing strand ends of devices configured for insertion into an anatomical structure, and the resulting devices.

A medical device for treating a heart valve insufficiency, with an endoprosthesis which can be introduced into a patient's body and expanded to secure a heart valve prosthesis in the patient's aorta. In an embodiment, the endoprosthesis has a plurality of positioning arches configured to be positioned with respect to a patient's aorta and a plurality of retaining arches to support a heart valve prosthesis. The endoprosthesis includes a first collapsed mode during the process of introducing it into the patient's body and a second expanded mode when it is implanted.

A stent graft delivery system and method of operating the same are disclosed. The system includes a stent graft cover, a screw gear, and a handle assembly. The handle assembly includes an external slider configured to rotate about the screw gear, and a central hub configured to slide linearly along the screw gear as the external slider is rotated. The central hub defines a main lumen port extending therethrough and configured to receive the stent graft cover, and a branched lumen port configured to receive a branched lumen. The stent graft cover can be fixed to and within the main lumen port. Rotation of the handle causes the central hub to slide linearly, which simultaneously retracts the stent graft cover and the branched lumen.