摘要:
A prosthesis delivery device includes an inner cannula, a positioner disposed coaxially over a first portion of the inner cannula, a concentric cannula disposed coaxially over a second portion of the inner cannula, and a tip assembly (18) disposed over a third portion of the inner cannula. A distal end of the concentric cannula is attached to a proximal end of the positioner. The tip assembly (18) comprises a distal tip segment and a proximal tip segment, with the distal tip segment attached to a proximal end of the concentric cannula and the proximal tip segment attached to a proximal end of the inner cannula. A prosthesis is carried on the concentric cannula and a sheath is mounted coaxially over the prosthesis. The sheath comprises a split defining a proximal sheath segment and a distal sheath segment. A proximal end of the proximal sheath segment is attached to the proximal tip segment.
摘要:
A prosthesis fixation system includes a delivery device having a distal end and a proximal end. The delivery device includes an inner cannula extending between the distal end and the proximal end of the delivery device, a positioner disposed coaxially over a first portion of the inner cannula, and a tip assembly (18) attached to a proximal end of the inner cannula. A prosthesis is releasably coupled to the delivery device at the proximal end of the delivery device. At least one trigger wire extends longitudinally within a lumen of the positioner and at least one suture loop (78) is attached to the proximal end of the positioner. A proximal end of the trigger wire extends proximally beyond the proximal end of the positioner such that trigger wire passes through the at least one suture loop (78) and is removably attached to an end of the prosthesis.
摘要:
A prosthesis can be configured to grasp intralumenal tissue when deployed within a body cavity and prevent axial flow of fluid around an exterior of the prosthesis. The prosthesis can include an expandable frame configured to radially expand and contract for deployment within the body cavity, and an annular flap positioned around an exterior of the expandable frame. In some embodiments, the annular flap can extend outward from the frame and have a collapsed configuration and an expanded configuration.
摘要:
A patch for repairing a hernia defect including a patch body that is reducible into a small configuration for delivery through a narrow incision or cannula into a patient. A support member assists in unfurling the patch body from the small configuration into an expanded configuration. A sleeve releasably mounts the support member to the patch body.
摘要:
The invention provides a multi-component (modular) percutaneous valve device that includes a valve module having valve leaflets and a valve frame. The valve frame includes one or more, for example two, ring members and a plurality of masts. Also provided is a valve frame having specially designed pivot points at the connection between masts and first and second ring members to assist folding the valve module and minimizing delivery diameter. The valve frame may also include wire guides to facilitate combining the valve module with a support module. The masts or a ring of the valve frame may also include locking members, such as shafts for closing the valve module and securing the valve module to the support module. The support module includes corresponding locking members, such as spears that align with the shafts on the valve module for assembly and locking the valve module to the support module.
摘要:
A vascular stent (1) for scaffolding a vessel (11) from the inside, wherein the stent is provided with a plurality of tube-forming elements (3A), (3B), and (3C) for forming a tube (2), the tube-forming elements combining with each other to construct a single flow path. Each of the tube-forming elements is formed by bending a strand comprising a single continuous biodegradable polymer, and first and second projecting parts (4, 5) are formed by successive alternation. Formation occurs in multiple stages in the axial direction of the tube by connecting using connecting legs (6) for successively connecting one side of the first projecting part and the other side of the second projecting part where the first and second projecting parts successively alternate. Elastic displacement parts (9) for performing elastic displacement by applying a pressing force to the tube are formed in the middle of the connecting legs successively connecting the first and second projecting parts of the tube-forming elements.
摘要:
A method of making a stent-graft (16) is provided. The method includes mounting a stent on a mandrel so that the stent is stretched when it is on the mandrel. A graft layer (18) is then adhered to the stent while it is mounted on the mandrel. When the stent-graft is removed from the mandrel, the stent contracts and the graft layer becomes partially wrinkled when the stent is in its expanded relaxed state.
摘要:
Die Erfindung betrifft eine Kombination aus einem Implantat (1) für Blutgefäße, insbesondere zur Beeinflussung des Blutflusses im Bereich arteriovenöser Fehlbildungen, und einem Einführdraht (14), wobei das Implantat (1) über ein Halteelement (15) an den Einführdraht (14) gekoppelt ist, wobei das Implantat (1) über eine Wandung aus einzelnen Filamenten (2) verfügt, die zu einem im Wesentlichen röhrenförmigen Geflecht zusammengefasst sind, das sich in axialer Richtung von proximal nach distal erstreckt, wobei die einzelnen Filamente (2) sich gegenseitig kreuzen und miteinander Kreuzungspunkte (3) bilden, das Implantat (1) in der Weise verformbar ist, dass es in einem Einführungskatheter eine Form mit vermindertem Durchmesser annimmt und am Ort der Implantation unter Anpassung an den Blutgefäßdurchmesser expandiert, am proximalen und/oder distalen Ende des Geflechts die Filamentenden jeweils mindestens paarweise zusammengeführt und miteinander dauerhaft verbunden sind, wobei die miteinander verbundenen Filamentenden atraumatisch geformt sind, und wobei an den proximalen Filamentenden Verbindungselemente (11) angebracht sind, die sich in proximaler Richtung erstrecken und an deren Enden sich Verdickungen (6) befinden, die vom Halteelement (15) formschlüssig in peripher angeordneten Ausnehmungen gehalten werden, wobei eine Freisetzung des Implantats (1) erfolgt, wenn eine formschlüssig über das Halteelement (15) mit eingepassten Verbindungselementen (11) gezogene schlauchartige Abdeckung (13) zurückgezogen wird oder das Halteelement (15) aus dem Katheter austritt, und wobei das Halteelement (15) rotationssymmetrisch ist und die peripher angeordneten Ausnehmungen eine umlaufende Nut ausbilden. Gemäß einer alternativen Ausführungsform ist ein Abschnitt (16) des Halteelements (15) elektrolytisch korrodierbar ausgebildet.
摘要:
The invention concerns a device to be implanted and assembled in a patient, the device comprising a base part (1) with a liquefiable material, and comprising a nail or plate (85) for being inserted in an inner space of a tubular bone (45) for stabilizing a fracture of the tubular bone, the nail or plate comprising a non-liquefiable material. The device is to be assembled with a method that comprises providing a through opening (10) in the bone tissue (11) of the tubular bone (45), positioning the nail or plate (85) relative to the bone tissue (11), positioning the base part (1) in the through opening (10) such that a distal end or portion thereof is in contact with the nail or plate (85) or such that the base part reaches through a through opening of the nail or plate (85) and is in contact with an opposite wall of the tubular bone (45) and its proximal face is situated in the region of a proximal mouth of the opening (10), and pressing the base part (1) against the nail or plate (85) or the opposite wall and coupling mechanical vibration into the base part (1) for liquefying the liquefiable material of the based part and letting it fill a space between the based part (85) and the bone wall of the tubular bone (45), whereby said space forms a positive fit connection with the liquefiable material.