SELF-EXPANDABLE SHAPE MEMORY ALLOY STENT AND MANUFACTURING METHOD THEREOF

摘要

PPROBLEM TO BE SOLVED: To provide a self-expandable shape memory alloy stent in which a narrow part is efficiently expanded regardless of the shape of a path at the narrow part, and to provide a manufacturing method thereof. PSOLUTION: The self-expandable shape memory alloy stent 80 includes first and second wires 10 and 11 made of superelastic shape memory alloy. The first wire 10 is extended downward from the highest end to the lowest end of the stent 80 without interlocking with itself, and extended upward from the lowest end to the highest end of the stent while interlocking with itself. Similarly, the second wire 11 is extended downward from the highest end to the lowest end of the stent 80 without interlocking with itself, and extended upward from the lowest end to the highest end of the stent while interlocking with itself. Thus, a rhombic space formed by the first wire is divided into four small rhombic spaces. The first wire and the second wire are woven with each other in such a manner that the second wire passes alternately below and above the first wire at intersection points. PCOPYRIGHT: (C)2007,JPO&INPIT