Implantable expandable structures for treating small vessels

A treatment device comprising:

• a tubular member having a first end, a second end, and a longitudinal axis extending therebetween, wherein the tubular member has a compressed configuration for delivery through a catheter and an expanded configuration in which the tubular member is configured to be implanted in a blood vessel lumen, and wherein the tubular member comprises a plurality of struts arranged in a plurality of bands, each band extending circumferentially about the tubular member, and wherein, within each of the bands, circumferentially adjacent struts are coupled at their respective ends at an apex such that each band includes a plurality of apices, and wherein the plurality of apices of each band includes:
• connector apices, each of which is connected to a corresponding connector apex of a longitudinally adjacent one of the bands, and
• free apices that do not connect to one of the longitudinally adjacent bands, wherein the free apices include first free apices disposed at a first longitudinal end of a corresponding band and second free apices disposed at a second longitudinal end of a corresponding band,
• wherein each of the plurality of struts has a width measured orthogonal to longitudinal and radial dimensions of the respective strut, and
• wherein, when the tubular member is in the compressed configuration, the first free apices of a first one of the bands are circumferentially aligned with the second free apices of a second one of the bands that is longitudinally adjacent the first one of the bands, wherein, for each aligned pair of first free apices and second free apices:
• the first free apices connect a narrower one of the struts within the first one of the bands to a wider one of the struts within the first one of the bands, the narrower one of the struts having a width that is less than a width of the wider one of the struts, and wherein the narrower one of the struts is disposed clockwise of the wider one of the struts about a circumference of the tubular member,
• the second free apices connect a narrower one of the struts within the second one of the bands to a wider one of the struts within the second one of the bands, the narrower one of the struts in the second one of the bands having a width that is less than a width of the wider one of the struts in the second one of the bands, and wherein the narrower one of the struts in the second one of the bands is disposed counter-clockwise of the wider one of the struts in the second one of the bands about a circumference of the tubular member,
• wherein, when the tubular member is in the expanded configuration, the first free apices of the first one of the bands are circumferentially offset from the second free apices of the second one of the bands.