Stent
AssigneesTokai University Educational System, Nipro Corporation
InventorsYuji IKARI, Kuniaki MATSUMOTO
Life of this patent
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Abstract
Provided is a stent having a novel structure, the stem simultaneously having both the stability of shape against the action of external force, such as compression force, tensile force, or torsional force, and high flexibility in the direction of twisting of the stem. Connection groups are provided at three or more positions set at circumferentially equally-spaced intervals, the connection groups each including connection sections which are disposed circumferentially close to each other between axially adjacent tubular divided bodies. The connection groups on both sides axially of each of the tubular divided bodies are provided at positions circumferentially offset from each other while at least one turning portion is present between the connection groups.
Claims11
A stent comprising:
- multiple tubular divided bodies each including multiple linear sections extending in an axial direction and being arranged at equal intervals in a circumferential direction, the circumferentially adjacent linear sections being connected with each other by turning portions at their ends in the axial direction so as to make zigzag turns in the axial direction and to be arranged in a tubular shape, and
- the multiple tubular divided bodies being arranged apart from each other in the axial direction;
- and connection sections provided between axially adjacent tubular divided bodies and connecting the axially adjacent tubular divided bodies with each other, wherein,
- three or more connection groups, each including a plurality of the connection sections that are provided close to each other in the circumferential direction between the axially adjacent tubular divided bodies and constitute a connection group, are installed at respective locations at equal intervals in the circumferential direction between the axially adjacent tubular divided bodies, and
- the connection groups located on axial both sides of each of the tubular divided bodies are installed at respective locations away from each other across at least one turning portion in the circumferential direction.
Dependencies are inferred from the claim text.