AN IMPLANTABLE MICROPOWER COMMAND RECEIVER FOR TELEMETRY BATTERY POWER SWITCHING

  • 1 January 1981
    • journal article
    • research article
    • Vol. 8  (3) , 173-179
Abstract
Command receivers that control the functioning of additional implanted circuitry can be useful in many medical telemetry applications. A thick-film hybrid command receiver system that directly interfaces with the second-generation ICP [intracranial pressure] telemetry system was designed and constructed. This command receiver controls telemetry on/off state through enabling/disabling the telemetry pulse generator stage. Lithium battery powering of the implant is made practical through use of this command receiver. An automatic power shutdown feature is incorporated to guard against accidental battery drain. The unit uses 2 commercial CMOS integrated circuits, a transistor, a resistor and an RH [radiofrequency] coil.