Patent ID: 8961590
Filing Date: 2015-02-24
Classification: A61F

Abstract:
1. A tubular flexible stent having proximal and distal end portions and a cylindrical shape, with luminal and abluminal surfaces and a thickness there between, the cylindrical shape defining a longitudinal axis, the tubular flexible stent comprising: a proximal helical section, a distal helical section and an intermediate ring section there between, each of the proximal and distal helical sections having of a plurality of longitudinally oriented strut members and a plurality of circumferentially oriented hinge members connecting circumferentially adjacent strut members to form a band, the band being wrapped about the longitudinal axis in a substantially helical manner to form a plurality of helical windings, wherein the distal helical section is wound about the longitudinal axis in the opposite direction from the proximal helical section, wherein no helical windings are proximal of the proximal helical section and no helical windings are distal of the distal helical section, wherein the intermediate ring section comprised of a plurality of longitudinally oriented strut members and a plurality of circumferentially oriented hinge members connecting circumferentially adjacent strut members to form an endless ring, the intermediate ring section being attached to the distal end of the proximal helical section by at least one ring connector member and attached to the proximal end of the distal helical section by at least one ring connector member and wherein each strut member has a substantially rectangular shape with opposing longitudinally oriented long sides and opposing circumferentially oriented short sides, each hinge member being connected to the circumferentially adjacent strut member along the short side of the strut member.