Reduced granulation and inflammation stent design

A stent with a variable radial force comprising:

• a first serpentine band comprising struts interconnected by proximal turns and distal turns, a first strut angle, a first number of strut pairs, and a first wall thickness, the first strut angle measured between interconnected struts at the proximal or distal turns of the first serpentine band;
• and
• a second serpentine band comprising struts interconnected by proximal turns and distal turns, a second strut angle less than the first strut angle, a second number of strut pairs greater than the first number of strut pairs, and a second wall thickness greater than the first wall thickness, the second strut angle measured between interconnected struts at the proximal or distal turns of the second serpentine band;
• wherein the second number of strut pairs is twice the first number of strut pairs;
• wherein the first strut angle is 5 to 15 times larger than the second strut angle;
• and
• wherein the first wall thickness is 1.5 to 4 times greater than the second wall thickness.

A stent comprising:

• a first serpentine end band forming a first end of the stent, and a second serpentine end band forming a second end of the stent, each serpentine end band comprising an end band number of strut pairs interconnected by proximal turns and distal turns, an end band strut angle measured between the pairs of interconnected end band struts at the proximal or distal turns, and an end band thickness, wherein a longitudinal axis of the stent extends from the first end of the stent to the second end of the stent;
• a plurality of serpentine center bands comprising a center band number of strut pairs interconnected by proximal turns and distal turns, the center band number of strut pairs being greater than the end band number of strut pairs, a center band strut angle measured between the pairs of interconnected center band struts at the proximal or distal turns, the center band strut angle being less than the end band strut angle, and a center band thickness being greater than the end band thickness;
• circumferential connectors engaging proximal turns of adjacent center serpentine bands, wherein the proximal turns of the adjacent center serpentine bands engaged by one of the circumferential connectors are offset circumferentially from each other by at least two proximal turns;
• a first plurality of longitudinal connectors engaging one of the center serpentine bands to the first serpentine end band;
• and
• a second plurality of longitudinal connectors engaging another of the center serpentine bands to the second serpentine end band;
• wherein the center struts are at an angle relative to the longitudinal axis of the stent and the end struts are parallel to the longitudinal axis of the stent, wherein each end strut is positioned a first circumferential distance from one adjacent end strut and a second circumferential distance from another adjacent end strut, the second distance being greater than the first distance.