| 摘要 |
The invention provides for intra-luminal stents, especially stent having controlled fracture connection, as well as, methods of making and using the same. In one embodiment, a stent for implantation into a vessel has a plurality of annular segments collectively forming tubular shape, characterized by at least first and second adjacent annular segments each defined by a plurality of struts and at least one joint interconnecting respective struts of the first and second segments on a non-permanent basis. |
| 主权项 |
1. A stent comprising:
a plurality of circumferentially disposed first segments, each first segment comprising a plurality of struts defining a plurality of closed cells having peaks; and a plurality of circumferentially disposed second segments, each second segment being sandwiched between two first segments, and each second segment comprising a plurality of sinusoidal struts, each sinusoidal strut being disposed in an arc about less than a circumference of the stent and connected to at least one first segment of the two first segments, wherein a second segment of the plurality of second segments comprises:
a first sinusoidal strut having a first end and a second end; anda second sinusoidal strut having a third end and a fourth end, the second sinusoidal strut being circumferentially adjacent to the first sinusoidal strut, wherein, when a section of the stent including the first and second sinusoidal struts is flattened, the first and second ends of the first sinusoidal strut are offset from each other in a direction perpendicular to a longitudinal axis of the stent such that the first and second ends are aligned in a direction parallel to the longitudinal axis with different closed cells of the plurality of closed cells, and wherein when the section of the stent is flattened, the second end of the first sinusoidal strut and the third end of the second sinusoidal strut are both positioned between the first end of the first sinusoidal strut and the fourth end of the second sinusoidal strut in the direction perpendicular to the longitudinal axis, the second and third ends being offset from each other in the direction parallel to the longitudinal axis, and wherein when the section of the stent is flattened, the first and second ends of the first sinusoidal strut are spaced from each other in the direction perpendicular to the longitudinal axis by a distance greater than a length of one closed cell of the plurality of closed cells, the length being measured in the direction perpendicular to the longitudinal axis. |
