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SIGNAL SENSING IN AN IMPLANTED APPARATUS WITH AN INTERNAL REFERENCE

  • US 20080146894A1
  • Filed: 12/19/2007
  • Published: 06/19/2008
  • Est. Priority Date: 12/19/2006
  • Status: Abandoned Application
First Claim
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1. An apparatus for sensing biological signals from an animal, the apparatus comprising:

  • at least one set of electrodes that is configured to be implanted in the animal and disposed at a first set of locations to sense biological signals from the first set of locations;

    a set of insulated conductors connected to the at least one set of electrodes, the set of insulated conductors formed in a configuration adapted to be substantially immune to electromagnetic interference,a network of filters connected to the set of insulated conductors, the network of filters configured to filter the sensed biological signals;

    an amplifier connected to the network of filters, the amplifier including an internal voltage reference and the amplifier configured to amplify the filtered biological signals to provide an amplified differential signal;

    an energy source powering at least the amplifier, the energy source configured to be substantially free of an externally grounded energy supply external to the animal; and

    a signal analysis module configured to receive the amplified differential signal and to analyze the amplified differential signal to determine at least one physiological parameter.

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