Longitudinally flexible expandable stent
First Claim
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1. A stent in the form of a thin-walled, cylindrical tube with a longitudinal axis, the stent comprising:
- a multiplicity of interior circumferential sets of strut members and one end circumferential set of strut members at each of the two longitudinal ends of the stent, each interior circumferential set of strut members and each end circumferential set of strut members having a first end and a second end;
each interior circumferential set of strut members including a plurality of strut members connected by curved sections, the plurality of strut members including long strut members and short strut members, at least two of the long strut members being attached to one another by one of the curved sections, the curved sections located at the first and second ends, the curved sections including connected curved sections and unconnected curved sections, each two adjacent strut members connected by a single curved section,the strut members including at least one connected strut member consisting of a long diagonal section having a longitudinal length fixedly attached to a connected curved section,each connected curved section being joined by a longitudinal connecting link to one connected curved section of an adjacent circumferential set of strut members, each connecting link that connects adjacent circumferential sets of strut members is connected at a connected curved section,the strut members also including at least one unconnected strut member consisting of a short diagonal section having a longitudinal length fixedly joined to an unconnected curved section.
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Abstract
Segmented articulatable stent of open structure comprised of end-connected struts of first and second lengths making up first and second segments with angular interconnects between adjacent first and second segments.
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Citations
23 Claims
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1. A stent in the form of a thin-walled, cylindrical tube with a longitudinal axis, the stent comprising:
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a multiplicity of interior circumferential sets of strut members and one end circumferential set of strut members at each of the two longitudinal ends of the stent, each interior circumferential set of strut members and each end circumferential set of strut members having a first end and a second end; each interior circumferential set of strut members including a plurality of strut members connected by curved sections, the plurality of strut members including long strut members and short strut members, at least two of the long strut members being attached to one another by one of the curved sections, the curved sections located at the first and second ends, the curved sections including connected curved sections and unconnected curved sections, each two adjacent strut members connected by a single curved section, the strut members including at least one connected strut member consisting of a long diagonal section having a longitudinal length fixedly attached to a connected curved section, each connected curved section being joined by a longitudinal connecting link to one connected curved section of an adjacent circumferential set of strut members, each connecting link that connects adjacent circumferential sets of strut members is connected at a connected curved section, the strut members also including at least one unconnected strut member consisting of a short diagonal section having a longitudinal length fixedly joined to an unconnected curved section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A cylindrical expandable stent comprising:
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a plurality of undulating band-like elements aligned on a common longitudinal axis to define a generally tubular stent body having a first end and a second end, each band-like element having alternating peaks and troughs, the peaks and troughs taking a generally longitudinal direction along the cylinder, the peaks of each band-like element comprising peaks of a first amplitude and peaks of a second amplitude, at least three peaks which are immediately circumferentially adjacent to one another having the second amplitude, the first amplitude being less than the second amplitude; and a plurality of interconnecting elements, each interconnecting element having a first end and a second end, the first and second ends extending from adjacent band-like elements, the first and second ends displaced circumferentially along the stent. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A stent comprising:
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a multiplicity of interior sets of strut members, each interior set having a first end and a second end and a plurality of strut members which are connected one to the other, adjacent strut members within an interior set arranged in pairs of strut members wherein some of the strut pairs include a longer strut member and a shorter strut member and some of the strut pairs include two longer strut members, adjacent interior sets connected to one another via interconnecting elements, wherein the interconnecting elements are arranged such that each interconnecting element which connects to an interior set adjacent the first end of the interconnecting element is connected to another interconnecting element which connects to the interior set adjacent the second end of the another interconnecting element via a pathway of only three connected strut members of the interior set. - View Dependent Claims (21, 22, 23)
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Specification