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1. (WO2007001862) MULTIPLE ELECTRODE IMPLANTABLE LEAD AND RELATED METHOD
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WHAT IS CLAIMED IS:

1. A lead assembly comprising:
a lead body;
a first conductor extending through the lead body and coupled to a first electrode;
a second conductor extending through the lead body and coupled to a second electrode;
a multi-filar coil extending through the lead body, the multi-filar coil including at least a first filar coupled to a first sensing or pacing electrode, and a second filar coupled to a second sensing or pacing electrode, the first filar electrically independent from the second filar.

2. The lead assembly of claim 1, wherein the first filar is substantially coradial with the second filar.

3. The lead assembly of any of claims 1 or 2, wherein the first filar includes a wire and coating of insulation over the wire.

4. The lead assembly of any of claims 1-3, wherein the lead body includes a first lumen, a second lumen, and a third lumen, the first conductor extending through the first lumen, the second conductor extending through the second lumen, and the multi-filar coil extending through the third lumen.

5. The lead assembly of any of claims 1-4, wherein the first electrode and second electrode are defibrillation electrodes.

6. The lead assembly of any of claims 1-5, wherein an antitachyarrhythmia therapy is deliverable through the first and second electrodes.

7. The lead assembly of any of claims 1-6, wherein at least one of the first conductor and the second conductor includes a cable including a plurality of wires.

8. The lead assembly of any of claims 1-7, wherein the multi-filar coil further comprises a third filar.

9. The lead assembly of claim 8, wherein the multi-filar coil further comprises a fourth filar.

10. The lead assembly of claim 9, wherein the third filar is electrically independent from the first filar and the second filar and is coupled to a third electrode, and the fourth filar is electrically independent from the first, second, and third filars and is coupled to a fourth electrode.

11. The lead assembly of any of claims 1-10, wherein at least one of the first sensing or pacing electrode and the second sensing or pacing electrode is adapted for both sensing and pacing.

12. The lead assembly of any of claims 1-11 coupled to a pulse generator.

13. A method comprising:
extending a first conductor through a lead body including at least one lumen; extending a second conductor through the lead body;
extending a multi-filar coil through the lead body, the multi-filar coil including at least a first filar and a second filar;
coupling a first electrode to the first conductor;
coupling a second electrode to the second conductor;
coupling the first filar of the multi-filar coil to a first sensing or pacing electrode; and coupling the second filar of the multi-filar coil to a second sensing or pacing electrode.

14. The method of claim 13, wherein extending the first conductor through the lead body includes extending a cable through the at least one lumen in the lead body.

15. The method of any of claims 13 or 14, wherein extending the first conductor through the lead body includes extending the first conductor through a first lumen in the lead body, and extending the second conductor through the lead body includes extending the second conductor through a second lumen in the lead body.

16. The method of any of claims 13-15, wherein extending the multi-filar coil through the lead body includes extending the multi-filar coil through a third lumen in the lead body.

17. The method of any of claims 13-16, comprising selecting a size of at least one of the first filar and the second filar based on, at least in part, a desired lead handling or pushability characteristic.

18. The method of any of claims 13-17, comprising winding the first filar and the second filar around a mandrel and forming the multi-filar coil on the mandrel.

19. The method of any of claims 13-18, comprising electrically coupling at least two of the electrodes.

20. The method of any of claims 13-19, comprising extending an outer covering over the lead body, and bonding the outer covering to the lead body.