Expandable stent
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United States of America Patent
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Issued Date -
Aug 9, 2007
app pub date -
Nov 27, 2006
filing date -
Nov 28, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An expandable stent for medical implantation is described which has a generally cylindrical structure with a central longitudinal axis. At least a portion of the generally cylindrical structure is formed from an arrangement of circumferentially curved structural members. The portion expands from a compressed state to an expanded state by a spiraling motion of each of the structural members about the central longitudinal axis. In the compressed state, each of the structural members may nest within an open region formed by segments composing the structural member, such that the portion of the generally cylindrical structure has no overlapping regions. A ratio of a circumferential length of each structural member to a spacing between adjacent structural members may be in the range of about 1.8 to about 2.3.
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