A flexible assembly for use within an articulated component of a motor driven surgical system is disclosed comprising a flexible shaft circuit strip comprising a plurality of wires, a knife bar comprising a first laminated plate disposed along a first side of the flexible shaft circuit strip and a second laminated plate disposed along a second side of the flexible shaft circuit strip, and a leaf spring disposed between the first side of the flexible shaft circuit strip and the first laminated plate. The knife bar is configured to reciprocate along a longitudinal axis of the flexible shaft circuit strip.