EXPANDABLE INTRAVASCULAR STENT Russian patent published in 2005 - IPC

FIELD: medicinal equipment, in particular, expandable intravascular stents.

SUBSTANCE: stent has flexible tubular body with longitudinal axis. Tubular body wall is defined by interconnected closed carcass members equipped with at least two parts adjoining to each other around circumference. Carcass members have sides made from material comprising elongated threads, said material being capable of transmitting compression forces in axial direction of threads, said force being continuously transmitted from one carcass member directly into subsequent carcass member in longitudinal direction. Sides of part in individual carcass member include at least two elongated converging first sides of said member. Stent may be expanded from radially compressed state into state, wherein it has greater diameter. In expanded state of stent, two converging interconnected second sides of part opposite to two first sides of part have interconnection point oriented longitudinally with respect to interconnection point of two converging first sides of part. First angle α arranged between first sides of part and oriented into said part is ranging between 20° and 120°, and second angle β between second sides of part and oriented into said part is ranging between 210° and 320°. Stent body is manufactured from pipe or piece of plate equipped with openings.

EFFECT: increased efficiency, provision for radial compression and expansion of stent without substantially changing the length of body, high uniform flexibility and compression strength.

15 cl, 6 dwg