DIFFERENTIAL DILATION STENT AND METHOD OF USE

摘要

Embodiments herein provide differential dilation stents for use in percutaneous interventions, such as transluminal bypass procedures. In some embodiments, the stents may be used in the process of creating an arteriovenous (AV) fistula during a percutaneous bypass procedure, and such stents may have two or more specialized regions that are configured to adopt a predetermined diameter, shape, and/or tensile strength upon insertion in order to suit the needs of the vessel or procedure. The disclosed stents may be used for creating and/or maintaining an arterial/venous fistula for bypass of an occlusion in a cardiac artery using a cardiac vein, or the femoral artery, for example using the tibial or popliteal vein.

主权项

1. A stent configured for insertion in a human blood vessel, the stent comprising:
a bent wire formed into a cylindrical body comprising a plurality of serpentine rings including a terminal ring at one end of the body and an adjacent ring inward from the terminal ring, wherein each serpentine ring comprises a plurality of axial struts, wherein circumferentially adjacent axial struts are joined by arcuate joints and wherein each serpentine ring has an inside surface, an outside surface, a proximal end, and a distal end, and wherein at least some of the axially adjacent serpentine rings other than the terminal ring and inward ring maintain a longitudinal gap between ends of adjacent arcuate joints.