摘要:
Apparatus is provided for use with a delivery catheter, including a primary stent-graft and a flared endovascular stent-graft, which is configured to initially be positioned in the delivery catheter in a radially-compressed state, and to assume a radially-expanded state upon being deployed from the delivery catheter. The primary stent-graft includes: a structural member, which includes a plurality of structural stent elements, and which, when the flared endovascular stent-graft assumes the radially-expanded state, is shaped so as to define a flared caudal portion, which flares radially outward in a caudal direction; at least one biologically-compatible substantially fluid-impervious flexible sheet, which is coupled to at least the flared caudal portion; and a stent-engagement member, which is generally tubular when the flared endovascular stent-graft assumes the radially-expanded state, which is disposed at least partially within the flared caudal portion, and which is configured to be sealingly coupled to the primary stent-graft.
摘要:
A personalized prosthesis for implantation at a treatment site of a patient includes a self- expanding mesh or membrane having collapsed and expanded configurations. The collapsed configuration is adapted to be delivered to the treatment site, and the expanded configuration engages the personalized prosthesis with the treatment site. The mesh or membrane is personalized to match the treatment site in the expanded configuration, and has an outer surface that substantially matches the treatment site shape and size. The self-expanding mesh or membrane forms a central lumen configured to allow blood or other body fluids to flow therethrough. Methods of manufacturing and delivery of the personalized prosthesis are also disclosed.
摘要:
A vascular band (1) comprises a biocompatible flexible material (2) and a plurality of radiopaque bars (4) extending transversely across the width of the material and spaced apart along the length of the biocompatible material. The bars provide some rigidity to the flexible material in the width direction thereby preventing buckling of the band in use and the radiopaque nature of the bars enable visualization of a landing zone for a stent graft during deployment thereof. The bars can be crimped or woven into the material. The band can be stitched, stapled, or hooked around a vessel.
摘要:
A stent is provided that is capable of inhibiting shifting of position within the body. A stent 10 is provided with a main body portion 15 formed in a cylindrical shape and marker attachment portions 16 for mounting a marker for imaging. The marker attachment portions 16 are connected respectively to both ends in an axial direction of the main body portion 15. The marker attachment portions 16 are provided so as to protrude in the axial direction relative to the main body portion 15. Leg portions 17 that connect the marker attachment portions 16 to the main body portion 15 are provided with bent portions 21 that tilt the marker attachment portions 16 outward in a radial direction of the main body portion 15.
摘要:
A stent includes a tubular support structure extending from a distal end to a proximal end, the tubular support structure including an inner surface and an outer surface. A retractable anchor system is disposed relative to the tubular support structure and includes a frame member and a plurality of retractable anchors secured to the frame member. The plurality of retractable anchors are biased to a deployed configuration in which the plurality of retractable anchors extend radially outward from the outer surface of the tubular support structure but are radially inwardly compressible into a delivery configuration.
摘要:
A device for placement in the aortic arch of a patient is provided. The device includes a distal portion for being engageably received in an aortic arch of a patient beyond the left subclavian artery and a stent portion fluidly engaged with the distal portion, the stent portion being permeable and configured to span a portion of the aortic arches to which the brachiocephalic trunk, left common carotid artery, and left subclavian artery attach to the aortic arch. A diameter of the stent portion may be modified by translation of the proximal portion to thereby alter a length of the stent portion thus causing modification of the diameter of the stent portion to fit anatomical features of differing dimensions.
摘要:
A system and method for percutaneous heart valve replacement includes implanting a heart valve replacement prosthetic into tissue and driving anchors into the heart valve replacement to affix the prosthetic to the tissue.
摘要:
The present invention relates to a tack device for holding plaque against a blood vessel wall, comprising: a frame consisting of a single column of cells, the column of cells comprising: a pair of concentric side rings spaced apart coaxially from each other, each of said pair of concentric side rings having a compressed state and an expanded state, wherein each side ring forms a respective end of the device; and a plurality of longitudinally extending bridge members connecting the pair of concentric side rings, wherein each bridge member of the plurality of longitudinally extending bridge members connects to one of the pair of concentric side rings at one end and to the other of the pair of concentric side rings at the opposite end; and one or more barbs on each of the bridge members; wherein each cell of the single column of cells comprises a portion of each of the pair of concentric side rings and two of the plurality of longitudinally extending bridge members