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Controlled activation ingestible identifier

  • US 10,238,604 B2
  • Filed: 12/15/2014
  • Issued: 03/26/2019
  • Est. Priority Date: 10/25/2006
  • Status: Active Grant
First Claim
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1. A pharmaceutical composition comprising:

  • a pharmaceutically active agent;

    a controlled activation identifier configured to transmit a signal upon contact with a target site of a body, wherein the controlled activation identifier comprises;

    first and second materials with dissimilar electrochemical properties;

    a dried conductive medium precursor; and

    a plurality of protective layers comprising;

    a first layer configured to prevent mechanical damage to the controlled activation identifier;

    a second layer configured to dissolve at a target pH; and

    a third layer configured to control exposure of the dried conductive medium precursor to the target site.

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