Method and apparatus for guiding an external needle to an implantable device

摘要

A system to generate a navigation field relative to an implanted device is disclosed. The system can include a small and/or thin localizer array positioned in the implanted device. A power management scheme and circuits can be provided to conserve and resource power in the implanted device.

主权项

1. A system to generate a field relative to an implanted medical device, comprising:
a coil array positioned in the implanted medical device includes a plurality of coils, each coil of the plurality of coils has a winding group formed on a flexible circuit and positioned with the implanted medical device relative to a port formed by the implanted medical device; a single power source in the implanted medical device to power all components of the implanted medical device which includes energizing the coil array; and a processor operable to control the energizing of the coil array from the single power source according to selected instructions to assist in providing at least one of a substantially constant amplitude alternating current or voltage to the coil array; wherein each coil of the plurality of coils in the coil array is formed substantially thin in the flexible circuit to provide a substantially thin profile of the flexible circuit; wherein each coil includes a first winding portion separated from a second winding portion by an isolation layer; wherein the first winding portion and the second winding portion are operable as a single coil that has a selected total number of windings equal to the first winding portion and the second winding portion.