Pacing leads appear to be simple, mechanical structures, but they have not improved in reliability in a parallel fashion to pulse generators.
Tyers
G F
GF
D002304:Cardiac Pacing, Artificial; D004567:Electrodes, Implanted / Q000592:standards*; D004867:Equipment Design; D004868:Equipment Failure; D006801:Humans; D011140:Polyurethanes
D011140:Polyurethanes