An implantable pulse generator header comprising a spring contact ring (10) including:a. an outer housing (12) comprising an outer wall (14) and an inner wall (16) surrounding a bore (18) having a longitudinal axis andb. a spring (24) comprising a base (26) and a plurality of spiral, radial spring fingers (28) extending from the base (26), each spring finger including a flange portion (30) terminating in an electrical contact zone (32), said spring fingers being biased toward a longitudinal axis of the bore (18) and said spring fingers being permitted to flex within the bore (18).
