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Pill-type swallowable transmitter

  • US 3,144,017 A
  • Filed: 01/03/1961
  • Issued: 08/11/1964
  • Est. Priority Date: 01/07/1960
  • Status: Expired due to Term
First Claim
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1. A PILL-TYPE SWALLOWABLE TRANSMITTER FOR TRANSMITTING TO AN EXTERNAL RECEIVER HAVING A RECEIVING COIL ELECTRICAL SIGNALS WHICH ARE INDICATIVE OF A CONDITION TO BE MEASURED IN THE DIGESTIVE SYSTEM OF A PATIENT, SAID TRANSMITTER COMPRISING, IN COMBINATION:

  • A CASING HAVING AN INTERIOR CAVITY;

    TRANSMITTER CIRCUIT MEANS LOCATED WITHIN SAID INTERIOR CAVITY;

    TRANSMITTER CIRCUIT MEANS LOCATED WITHIN SAID INTERIOR CAVITY;

    AND A TRANSMITTING COIL CONNECTED TO SAID TRANSMITTER CIRCUIT MEANS, SAID TRANSMITTING COIL BEING CARRIED BY SAID CASING AND LOCATED OUTSIDE OF SAID INTERIOR CAVITY, WHEREBY THE COUPLING BETWEEN SAID COILS IS GREATER THAN IF SAID TRANSMITTING COIL WERE LOCATED WITHIN SAID INTERIOR CAVITY.

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