| CPC A61B 90/39 (2016.02) [A61B 17/221 (2013.01); A61F 2/89 (2013.01); A61F 2/95 (2013.01); A61B 2017/22041 (2013.01); A61B 2017/2215 (2013.01); A61B 2090/3966 (2016.02); A61F 2220/0075 (2013.01); A61F 2250/0039 (2013.01); A61F 2250/0098 (2013.01)] | 8 Claims |
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1. An intravascular treatment device comprising:
an elongated guide; and
an expandable framework movable from a collapsed configuration sized to traverse a lumen of a catheter to an expanded configuration sized to extend within a lumen of a blood vessel, the expandable framework comprising:
a plurality of ring struts, each ring strut of the plurality of ring struts encircling the elongated guide, and each ring strut of the plurality of ring struts movable from a constricted position around the elongated guide when the expandable framework is in the collapsed configuration to a radially expanded position around the elongated guide when the expandable framework is in the expanded configuration;
a plurality of central struts, each central strut of the plurality of central struts joining two adjacent ring struts of the plurality of ring struts such that each ring strut of the plurality of ring struts is joined by one or more central struts of the plurality of central struts to only a first adjacent ring strut of the plurality of ring struts, each central strut of the plurality of central struts comprising a shape when the expandable framework is in the collapsed configuration that is essentially the same as a shape of the central strut when the expandable framework is in the expanded configuration; and
a plurality of bent struts, each bent strut of the plurality of bent struts joining two adjacent ring struts of the plurality of ring struts such that each ring strut of the plurality of ring struts is joined by one or more bent struts of the plurality of bent struts to only a second adjacent ring strut of the plurality of ring struts opposite the first adjacent ring strut of the plurality of ring struts, each bent strut of the plurality of bent struts movable from a longitudinally elongated shape when the expandable framework is in the collapsed configuration to a radially expanded shape when the expandable framework is in the expanded configuration,
wherein, when the expandable framework is in the expanded configuration, a first group of bent struts of the plurality of bent struts is positioned to define a first circumference of the expandable framework, and
wherein a first group of central struts of the plurality of central struts are positioned to define a second circumference of the expandable framework measuring smaller than the first circumference.
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