a stent includes a matrix of struts . the matrix of struts may be disposed parallel to one another in a non - expanded disposition . a plurality of loops along the longitudinal axis may be formed by the matrix of struts . in one aspect , a plurality of cusps in each loop of the plurality of loops connects adjacent struts , the plurality of cusps including tied cusps and free cusps . the tied cusps of one loop can be connected to the tied cusps of an adjacent loop by a bridge extending therebetween . in one aspect , the adjacent struts connected by a tied cusp have different lengths . in one aspect , at least one free cusp in each loop joins two struts of approximately equal length .