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Ingestible event markers comprising an ingestible component

  • US 9,149,423 B2
  • Filed: 05/10/2010
  • Issued: 10/06/2015
  • Est. Priority Date: 05/12/2009
  • Status: Active Grant
First Claim
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1. A device comprising:

  • an ingestible event marker comprising;

    an identifier circuitry component that transmits a conductive signal through a body as a conductive medium when activated, where the conductive signal forms a current signature that identifies the ingestible event marker;

    a first electrochemical material electrically coupled to the identifier circuitry component;

    a second electrochemical material electrically coupled to the identifier circuitry at a different location from the first electrochemical material, where the second electrochemical material is dissimilar from the first electrochemical material such that the first and second electrochemical materials provide a voltage potential difference when in contact with a conductive fluid to power the identifier circuitry component and cause the identifier circuitry component to transmit a conductive signal through the conductive fluid; and

    an electrically insulative signal amplification element disposed between the first electrochemical material and the second electrochemical material, that extends beyond outer edges of the first electrochemical material and the second electrochemical material, such that the electrically insulative signal amplification element is configured to define a current path about the electrically insulative signal amplification element that is greater than a distance between the first electrochemical material and the second electrochemical material; and

    an osmotic ingestible component attached to the ingestible event marker, the osmotic ingestible component configured to provide the conductive fluid to the identifier circuitry of the ingestible event marker.

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