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Minimum interface biomedical monitoring system

  • US 5,016,631 A
  • Filed: 03/23/1990
  • Issued: 05/21/1991
  • Est. Priority Date: 03/23/1990
  • Status: Expired due to Fees
First Claim
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1. An electrical apparatus for a main implant module interfaced with at least one implant sensor module, comprising:

  • a power source located in the main implant module;

    first and second wires running from the main implant module to a particular sensor module, said first wire connected to ground;

    a switching means located in the main implant for selectively connecting said second wire to said power source during a powering phase and to electronics located in said main implant during a reading phase;

    a sensor means located in the sensor module for detecting a physiological parameter;

    processing electronics internal to said sensor module and operably coupled to said sensor means for providing a current, I, along the second wire to the electronics located in said main implant, said current I being functionally related to the sensed physiological parameter;

    a capacitor means located in the sensor module and positioned across said first and second wires that is charged during the powering phase and for providing power to said processing electronics during the reading phase; and

    a diode means located in the sensor module for disconnecting said capacitor from said second line during the reading phase.

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