Patent ID: 6055457
Filing Date: 2000-04-25
Classification: A61N

Abstract:
An implantable pacing lead system for pacing a patient's heart, comprising:a delivery catheter;an elongated insulative lead body locatable in said delivery catheter and taking the form of a single non-diverging filament having a proximal end and a distal end;a first electrode mounted to a distal portion of the lead body; anda second electrode which is an active fixation device mounted fixedly to and extending laterally from the lead body proximal to the first electrode and longitudinally spaced from the first electrode, locatable within the delivery catheter;wherein said lead body comprises means for providing torsional rigidity extending between said active fixation device and the proximal end of the lead body and wherein said lead has greater torsional rigidity proximal to said active fixation device than distal to said active fixation device.