Stent
AssigneePiolax, Inc.
InventorsHiroyuki Asano, Ichizo Okata
Life of this patent
Estimating the term…
Abstract
A stent having a cylindrical shape includes frame-like unexpandable portions incapable of being expanded in a circumferential direction, and frame-like expandable portions capable of being expanded in the circumferential direction. The unexpandable portions and the expandable portions are alternately connected together in the circumferential direction.
Claims15
A stent having a cylindrical shape, said cylindrical shape having a diameter adjustable between an expanded state and a reduced state, said stent comprising:
- frame-like unexpandable portions incapable of being expanded in a circumferential direction;
- and
- frame-like expandable portions capable of being expanded in the circumferential direction;
- wherein said unexpandable portions and said expandable portions are alternately connected together in the circumferential direction,
- each of said unexpandable portions comprising a triangular frame, said frame having a portion which extends along the circumferential direction of said stent.
A stent having a cylindrical shape, said cylindrical shape having a diameter adjustable between an expanded state and a reduced state, said stent comprising:
- frame-like unexpandable portions incapable of being expanded in a circumferential direction;
- and
- frame-like expandable portions capable of being expanded in the circumferential direction;
- wherein said unexpandable portions and said expandable portions are alternately connected together in the circumferential direction,
- each of said expandable portions being constructed into a frame-like shape by first sides extending along the circumferential direction and opposed to each other in the axial direction, and second sides extending in the axial direction and opposed to each other in the circumferential direction, said frame-like shape being designed such that in the diameter-expanded state of said stent, the second sides of said frame are outwardly curved, and
- wherein an X-shaped beam connecting said first sides together is provided in the interior of the frame of each of said expandable portions.
A stent having a cylindrical shape, said cylindrical shape having a diameter adjustable between an expanded state and a reduced state, said stent comprising:
- frame-like unexpandable portions incapable of being expanded in a circumferential direction;
- and
- frame-like expandable portions capable of being expanded in the circumferential direction;
- wherein said unexpandable portions and said expandable portions are alternately connected together in the circumferential direction,
- each of said expandable portions being constructed into a frame-like shape by first sides extending along the circumferential direction and opposed to each other in the axial direction, and second sides extending in the axial direction and opposed to each other in the circumferential direction, said frame-like shape being designed such that in the diameter-reduced state of said stent, said second sides are displaced relative to said first sides so that the first side and the second side of said frame-like shape may form an acute angle and the first side and the second side of said frame-like shape may form an obtuse angle, whereby said stent is expanded in its diameter, and
- wherein an X-shaped beam connecting said first sides together is provided in the interior of the frame-like shape of each of said expandable portions.
A stent having a cylindrical shape, said cylindrical shape having a diameter adjustable between an expanded state and a reduced state, said stent comprising:
- frame-like unexpandable portions incapable of being expanded in a circumferential direction;
- and
- frame-like expandable portions capable of being expanded in the circumferential direction;
- wherein said unexpandable portions and said expandable portions are alternately connected together in the circumferential direction,
- wherein said unexpandable portions are directly connected to each other in an axial direction to form a column of unexpandable portions, whereby unexpandable portion columns and expandable portion columns extending in the axial direction are alternately disposed in the circumferential direction.
Dependencies are inferred from the claim text.