Ingestible event marker systems
First Claim
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1. An ingestible event marker comprising:
- a battery section including two electrodes configured to supply a battery voltage upon contacting a body fluid by generating a current between the two electrodes using the body fluid as a conductive medium;
an integrated circuit (IC) configured to store an identification code; and
an electric monopole antenna communicatively coupled to the IC;
wherein the IC comprises;
a control logic configured to control an impedance between the two electrodes to alter the current flowing through the body fluid to transmit a coded signal representing the identification code through the electrical monopole antenna as a monophasic electrical signal;
a power supply circuit coupled to the control logic; and
a capacitor coupled to the control logic, the battery section, and the power supply circuit, the capacitor configured to be chargeable by the battery voltage.
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Accused Products
Abstract
Ingestible event marker systems that include an ingestible event marker (i.e., an IEM) and a personal signal receiver are provided. Embodiments of the IEM include an identifier, which may or may not be present in a physiologically acceptable carrier. The identifier is characterized by being activated upon contact with a target internal physiological site of a body, such as digestive tract internal target site. The personal signal receiver is configured to be associated with a physiological location, e.g., inside of or on the body, and to receive a signal the IEM. During use, the IEM broadcasts a signal which is received by the personal signal receiver.
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Citations
14 Claims
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1. An ingestible event marker comprising:
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a battery section including two electrodes configured to supply a battery voltage upon contacting a body fluid by generating a current between the two electrodes using the body fluid as a conductive medium; an integrated circuit (IC) configured to store an identification code; and an electric monopole antenna communicatively coupled to the IC; wherein the IC comprises; a control logic configured to control an impedance between the two electrodes to alter the current flowing through the body fluid to transmit a coded signal representing the identification code through the electrical monopole antenna as a monophasic electrical signal; a power supply circuit coupled to the control logic; and a capacitor coupled to the control logic, the battery section, and the power supply circuit, the capacitor configured to be chargeable by the battery voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An ingestible event marker comprising:
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a battery section including two electrodes configured to supply a battery voltage upon contacting a body fluid by generating a current between the two electrodes using the body fluid as a conductive medium; an integrated circuit (IC) coupled to the battery section and configured to store an identification code; and wherein the IC comprises; a transmission switch transistor coupled to the two electrodes; a control logic configured to control the transmission switch transistor to control an impedance between the two electrodes to alter the current flowing through the body fluid to transmit a coded signal representing the identification code using binary phase-shift keying (BPSK) modulation via a carrier frequency generated by an oscillator; a power supply circuit coupled to the control logic; and a capacitor coupled to the control logic and the power supply circuit, the capacitor configured to be chargeable by the battery voltage.
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Specification