Patent ID: 8639358

Claim:
An integrated bipolar implantable medical electrical lead comprising a single low voltage electrode, a single high voltage electrode, and a connector terminal assembly including a first contact, corresponding to the low voltage electrode, and second and third contacts, both corresponding to the high voltage electrode; and the lead further comprising: a tri-lumen insulative lead body extending between the electrodes and the connector terminal assembly; a pair of individual conductors connecting, in parallel, the low voltage electrode to the first contact of the connector terminal assembly, a first conductor of the pair of individual conductors extending within a first lumen of the tri-lumen lead body, and a second conductor of the pair extending within a second lumen of the lead body; and a third conductor connecting the high voltage electrode to the second contact and to the third contact of the connector terminal assembly, the third conductor extending within a third lumen of the tri-lumen lead body; wherein the first and second conductors each comprise a central wire bundle of a first type made up of a plurality of wire filars, each wire filar of the first type having a first diameter; and the third conductor comprises a central wire bundle of a second type made up of a plurality of wire filars, each wire filar of the second type having a second diameter, the second diameter being greater than the first diameter.