Lead for an implantable stimulation device for cardiac stimulation of a patient

A method for operating an implantable stimulation device for cardiac stimulation of a patient, comprising:

• providing a lead generally extending along a longitudinal axis, the lead comprising a body section including an electrically conductive core and a distal lead section extending from the body section along the longitudinal axis and forming a distal end, wherein the electrically conductive core is only exposed towards an outside of the body section at the distal end, the lead further comprising a first electrode device having a shape of a screw, the first electrode device configured for at least one of transmitting an electrical pacing signal and sensing an electrical sense signal and a second electrode device arranged on the body section for emitting an electrical defibrillation signal, the first electrode device is configured to pierce into intra-cardiac tissue for fixing the lead at the distal end to intra-cardiac tissue, the first electrode device extending from the distal end by a length, as measured along the longitudinal axis, and is configured to reach into a left bundle branch of the cardiac conduction system for injecting a pacing signal into the left bundle branch or receiving sense signals from the left bundle branch, wherein the entire distal lead section has a first isodiametric cross-sectional shape defined by a first diameter and the entire body section has a second isodiametric cross-sectional shape defined by a second diameter, wherein the first diameter is smaller than the second diameter which results in reduced bending stiffness of the distal lead section with respect to the body section,
• using the first electrode device, which is engaged with intra-cardiac tissue to reach into a left bundle branch of the cardiac conduction system, to at least one of inject pacing signals into or receive sense signals from the left bundle branch.