摘要:
Apparatus, systems, and methods for a medical implant with improved durability and strength. An implant structure having a mesh, wherein struts of the mesh vary in width as a function of length, where one or more segments are defined by one or more corresponding equations that define strut width. Connecting elements may be optionally included and may further optionally vary in width and shape. Strut tapering functions may be one or more segments of piecewise linear equations. Implant mesh structures may be symmetric, asymmetric, or may vary in segments along the length and/or circumference of the mesh. The mesh may be of a self-expanding or balloon expandable material suitable for medical use.
摘要:
La présente invention concerne un dispositif de dérivation interne d'une paroi intestinale, de préférence pour la protection d'une anastomose au niveau de l'œsophage (11) comprenant un élément de dérivation (1) du type stent dont l'ancrage peut être modifié de façon contrôlée, ledit stent ayant des propriétés d'élasticité radiale et longitudinale de sorte qu'il peut être comprimé radialement en position rétractée pour permettre son introduction et son retrait par un orifice naturel, de préférence l'orifice nasal d'un patient et adopter une dite position d'expansion radiale maximale après relâchement de la compression radiale, ledit élément de dérivation étant recouvert sur sa surface externe d'un revêtement externe étanche (1a) sur une partie de sa longueur au moins, caractérisé en ce que ledit élément de dérivation(1) est couplé à un tube support souple semi rigide (2) apte à s'étendre en longueur depuis l'orifice naturel jusqu'en aval du dit élément de dérivation lorsque celui-ci est ancré au niveau de l'intestin, le dit tube support (2) traversant la lumière interne (2') dudit élément de dérivation de part en part, le dit tube support étant fixé à une partie au moins du dit élément de dérivation, l'ensemble dudit dit tube support recouvert du dit élément de dérivation en position rétractée radialement présentant un diamètre externe tel qu'il est apte à être introduit et retiré par ledit orifice naturel, de préférence l'orifice nasal.
摘要:
For percutaneous minimally-invasive intervention in vessels originating from other tortuous vessels, such as the tortuous aortic arch, guide wires / catheters are used to enable procedural catheters to access the vessels where an interventional procedure is needed. Two new methods for fixing a stabilization wire / catheter and providing the needed tension and stabilization without a second percutaneous access are disclosed (1) using a micro-anchor and pin and (2) using a modified Fogarty Balloon. These methods are also usable for access to and treatment of peripheral embolisms in tortuous vessels as well as renal and other visceral interventions.
摘要:
A system for placement in at least one blood vessel includes a main graft body, one or more inflatable channels, and a filling structure. The one or more inflatable channels are attached to the main graft body. The filling structure is inflatable around at least a portion of the main graft body and at least a portion of at least one of the one or more inflatable channels. Various systems further include a graft extension that is insertable into a lumen formed by the main graft body, where the filling structure is inflatable around at least a portion of the graft extension. A method includes inserting a main graft body into a blood vessel, filling an inflatable channel attached to the main graft body, and filling a filling structure to inflate around at least a portion of the main graft body and at least a portion of the inflatable channel.
摘要:
A diametrically adjustable endoprosthesis includes a controlled expansion element extending along at least a portion of a graft and is supported by a stent. The controlled expansion element diametrically constrains and limits expansion of the endoprosthesis. Upon deployment from a smaller, delivery configuration, the endoprosthesis can expand to the initial diameter set by the controlled expansion element. Thereafter, the endoprosthesis can be further diametrically expanded (e.g., using balloon dilation) by mechanically altering the controlled expansion element.
摘要:
A compliance restoration device includes a compliance balloon lumen, a chamber support structure disposed in the compliance balloon lumen and configured to expand to support an expanded volume of the compliance balloon lumen, and a spring assembly configured to cause the chamber support structure to expand by applying a force on a first end of the chamber support structure.
摘要:
There is provided a device for maintaining a vascular connection comprising a vein- supporting section and an artery-supporting section. The centreline of the vein-supporting section and the centreline of the artery-supporting section meet at an intersection point which defines the origin of a right-handed Cartesian coordinate system. The centreline of the artery-supporting section is arcuate and lies in the region y
摘要:
A prosthetic assembly for repairing a target tissue defect within a target vessel region configured includes an exclusion structure sized to substantially bypass target tissue defect, and includes a branch assembly. The branch assembly can include a self-expanding outer branch prosthesis having an inflow region configured to deform to a non-circular cross- sectional-shape when deployed, and a support structure at least partially disposed within the inflow region. The support structure preserves blood flow to the branch vessel while the deformed inflow region inhibits blood leakage between and/or around the prosthetic assembly.
摘要:
Die vorliegende Erfindung betrifft eine Gefäßprothese für ein Blutgefäß eines Patienten, die folgendes aufweist: einen hohlzylindrischen Grundkörper (11) mit einem sich darin erstreckenden Hauptlumen (12), sowie eine Vielzahl an nicht untereinander verbundenen Stentringen (18), die in Längsrichtung der Gefäßprothese (10) in einem Abstand hintereinander angeordnet und mäanderförmig umlaufend sind. Die Gefäßprothese weist ferner vier Seitenäste auf, die sich von zwischen den Stentringen (18) liegenden Fenestrierungen (26) im Prothesenmaterial (21) ins Hauptlumen (12) nach distal erstrecken.