Multipolar conduction system pacing lead with atrial sensing

An implantable lead for use with an implantable medical device (IMD), the implantable lead comprising:

• a tubular lead body having a proximal portion including a proximal end, a distal portion including a distal end opposite the proximal end, and an intermediate portion between the proximal portion and the distal portion;
• a helical electrode extending distally from the distal end of the tubular lead body;
• a plurality of pacing/sensing electrodes located in the distal portion;
• and
• at least one electrical conductor extending through the tubular lead body and mechanically and electrically coupled to the helical electrode and the plurality of pacing/sensing electrode.

An implantable lead for use with an implantable medical device (IMD), the implantable lead comprising:

• a tubular lead body having a proximal portion including a proximal end, a distal portion including a distal end opposite the proximal end, and an intermediate portion between the proximal portion and the distal portion, the intermediate portion having a pre-formed bend;
• at least one atrial electrode disposed in the intermediate portion of the tubular lead body, wherein the pre-formed bend of the intermediate portion is configured to urge the at least one atrial electrode against a surface of the right atrium when the lead is implanted;
• at least one pacing/sensing electrode located in the distal portion;
• a helical electrode extending distally from the distal end of the tubular lead body;
• and
• a plurality of electrical conductors extending through the tubular lead body and mechanically and electrically coupled to respective ones of the helical electrode, the at least one atrial electrode, and the at least one pacing/sensing electrode.