Drug-filled stents with filaments for increased lumen surface area and method of manufacture thereof

A stent comprising:

• a hollow wire formed into a stent pattern, wherein the hollow wire includes:
• an outer member having an outer surface and an inner surface;
• a lumen extending longitudinally within the hollow wire;
• a plurality of openings, wherein each opening is disposed through the outer member to the lumen and wherein each opening of the plurality of openings is spaced from adjacent openings of the plurality of openings;
• and
• a plurality of filaments extending longitudinally within the lumen, wherein each filament of the plurality of filaments is spaced from adjacent filaments of the plurality of filaments, and
• wherein no material is disposed within spacing between adjacent filaments and spacing between adjacent filaments of the plurality of filaments is configured to permit tissue in-growth between the adjacent filaments.

A stent comprising:

• a hollow wire formed into a stent pattern, wherein the hollow wire includes:
• an outer member having an outer surface and an inner surface;
• a lumen extending longitudinally within the hollow wire;
• at least one opening disposed through the outer member to the lumen;
• and
• a plurality of filaments extending longitudinally within the lumen, wherein each filament of the plurality of filaments is spaced from adjacent filaments of the plurality of filaments, and wherein the plurality of filaments includes at least ten filaments, and
• wherein spacing between adjacent filaments of the plurality of filaments is configured to permit tissue in-growth between the adjacent filaments.

A stent comprising:

• a hollow wire formed into a stent pattern, wherein the hollow wire includes:
• an outer member having an outer surface and an inner surface;
• a lumen extending longitudinally within the hollow wire, wherein the lumen is defined by the inner surface of the outer member and extends longitudinally within the outer member;
• at least one opening disposed through the outer member to the lumen;
• and
• a plurality of filaments extending longitudinally within the lumen, wherein each filament of the plurality of filaments is spaced from adjacent filaments of the plurality of filaments, and
• wherein no material is disposed within spacing between adjacent filaments and the spacing between adjacent filaments of the plurality of filaments is configured to permit tissue in-growth between the adjacent filaments.