Patent ID: 8239041

Claim:
An implantable lead having a length extending to and meeting with a distal lead end and a proximal lead end that is configured to be electrically connectable to an active medical device, the lead comprising a first multilayer helical wave filter in series with the lead somewhere along the length thereof, the first multilayer helical wave filter formed from an electrical conductor and comprising: a) a first helically wound segment having at least one first planar or round surface, a first end and a second end, the first helically wound segment forming a first inductive component; b) a first return segment comprising a first return segment first end connected to the second end of the first helically wound segment and extending to a first return segment second end connected to a first end of the second helically wound segment; c) a second helically wound segment having at least one second planar or round surface and comprising the first end connected to the second end of the first return segment and extending to a second end adjacent to the second end of the first helically wound segment and the first return segment first end, the second helically wound segment forming a second inductive component, wherein a portion of the first return segment residing in an axial relationship with respect to a longitudinal extent of the winds of the first and second helically wound segments resides entirely inside or outside both of them; and d) a first dielectric material disposed between the first and second planar or round surfaces facing each other, thereby forming a first capacitance between adjacent coils of the first and second helically wound segments; e) wherein the wave filter has a Q with a 3 db bandwidth that is at least 10 kHz.