Percutaneous cable with redundant conductors for implantable blood pump
A blood pump system for left ventricle assist has an implantable pump unit having a multiphase stator having a plurality of windings connected between respective junctions for forming first, second, and third phases. An external control unit comprises an H-bridge inverter having first, second, and third phase legs. A percutaneous cable is provided having first, second, and third parallel pairs of redundant conductors. Each conductor pair is connected between a respective phase leg and a respective junction. The conductors are arranged concentrically around a cable core so that individual conductors of each pair are separated by at least one conductor of a different conductor pair.
1. A blood pump system for left ventricle assist comprising:
an implantable pump unit having a multiphase stator having a plurality of windings connected between respective junctions for driving first, second, and third electrically parallel pairs of redundant conductors in corresponding first, second, and third phases;
an external control unit comprising an H-bridge inverter having first, second, and third phase legs; and
a percutaneous cable having the first, second, and third electrically parallel pairs of redundant conductors, wherein each conductor pair is connected between a respective phase leg within the external control unit and a respective common junction within the implantable pump unit, wherein the conductors are arranged concentrically around a cable core so that individual conductors of each pair are separated by at least one conductor of a different conductor pair.
2. The system of claim 1 wherein the concentric arrangement of the conductors places the individual conductors of each pair in diametric opposition.
3. The system of claim 1 wherein the cable is cylindrically-shaped, and wherein the individual conductors are helically twisted within the cable.
4. The system of claim 1 wherein the cable further comprises an outer jacket surrounding the concentrically-arranged conductors.
5. A blood pump system for left ventricle assist, comprising:
an implantable pump unit having a multiphase stator having a plurality of windings connected between respective junctions for driving first, second, and third electrically parallel pairs of redundant conductors in corresponding first, second, and third phases;
an external control unit comprising an H-bridge inverter having first, second, and third phase legs; and
a percutaneous cable having the first, second, and third electrically parallel pairs of redundant conductors, wherein each conductor pair is connected between a respective phase leg within the external control unit and a respective common junction within the implantable pump unit, wherein the conductors are arranged concentrically around a cable core so that individual conductors of each pair are separated by at least one conductor of a different conductor pair and are placed in diametric opposition.