Endovascular therapy device

A method comprising:

• introducing a medical lead into vasculature of a patient, the medical lead comprising:
• a first lead body portion including a first group of coiled wire filars,
• a second lead body portion including a second group of coiled wire filars,
• a third lead body portion including a third group of coiled wire filars, and
• a plurality of electrodes, each electrode of the plurality of electrodes electrically connected to at least one coiled wire filar of the first group of coiled wire filars,
• wherein the first group of coiled wire filars splits to form the second group of coiled wire filars and the third group of coiled wire filars,
• wherein the second group of coiled wire filars is configured to electrically connect to a first feedthrough of a medical device, and
• wherein the third group of coiled wire filars is configured to electrically connect to a second feedthrough of the medical device;
• and
• advancing the medical lead until the plurality of electrodes are adjacent a target location in the vasculature of the patient.

A medical device system comprising:

• a medical lead including a lead body, the medical lead comprising:
• a first lead body portion including a first group of coiled wire filars,
• a second lead body portion including a second group of coiled wire filars,
• a third lead body portion including a third group of coiled wire filars,
• a first group of electrical contacts at a proximal portion of the second lead body portion, each electrical contact of the first group of electrical contacts electrically connected to respective filars of the second group of coiled wire filars,
• a second group of electrical contacts at a proximal portion of the third lead body portion, each electrical contact of the second group of electrical contacts electrically connected to respective filars of the third group of coiled wire filars,
• a plurality of electrodes, each electrode of the plurality of electrodes electrically connected to at least one coiled wire filar of the first group of coiled wire filars, and
• an expandable structure at a distal portion of the lead body configured to transform from a relatively low-profile delivery configuration to a deployed configuration in a blood vessel of a patient,
• wherein the plurality of electrodes are disposed on the expandable structure,
• wherein the first group of coiled wire filars splits to form the second group of coiled wire filars and the third group of coiled wire filars,
• wherein the second group of coiled wire filars is configured to electrically connect to a first feedthrough of a medical device via the first group of electrical contacts, and
• wherein the third group of coiled wire filars is configured to electrically connect to a second feedthrough of the medical device via the second group of electrical contacts;
• and
• a medical device configured to:
• control therapy delivery via the plurality of electrodes or sense a patient parameter via the plurality of electrodes.