Low profile antenna for in body device
First Claim
Patent Images
1. An ingestible event marker comprising:
- a wall configured to dissolve in body fluid;
an ingestible identifier located within the wall, the ingestible identifier comprising an integrated circuit configured to emit a signal when activated at a target site within a body, wherein the integrated circuit comprises a signal generation element coupled to an antenna that is at least partially coated and configured to transmit the signal to a receiver located outside the body;
an ingestible battery located within the wall, the ingestible battery comprising two dissimilar electrochemical materials which constitute an anode and a cathode of the battery, wherein the battery produces a potential difference to drive the signal generation element when the two dissimilar electrochemical materials come in contact with a fluid within the body;
wherein the at least partially coated antenna has a first configuration prior to ingestion and a second configuration after ingestion;
wherein the at least partially coated antenna comprises a first end and a second end and defines an effective area related to the distance between the first and second ends, wherein the effective area in the first configuration is different than the effective area in the second configuration; and
wherein the ingestible battery and the at least partially coated antenna are exposed to the body fluid during operation after the wall is at least partially dissolved in the body fluid.
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Accused Products
Abstract
Low profile antennas for ingestible devices, such as ingestible event markers, are provided. Aspects of the ingestible devices of the invention include low profile signal transmission antennas configured such that they are flexible or degrade after use, allowing the antenna and attached components to pass easily through the body. Embodiments of the low profile antennas are configured to emit a detectable signal upon contact with a target physiological site. Also provided are methods of making and using the devices of the invention.
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Citations
33 Claims
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1. An ingestible event marker comprising:
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a wall configured to dissolve in body fluid; an ingestible identifier located within the wall, the ingestible identifier comprising an integrated circuit configured to emit a signal when activated at a target site within a body, wherein the integrated circuit comprises a signal generation element coupled to an antenna that is at least partially coated and configured to transmit the signal to a receiver located outside the body; an ingestible battery located within the wall, the ingestible battery comprising two dissimilar electrochemical materials which constitute an anode and a cathode of the battery, wherein the battery produces a potential difference to drive the signal generation element when the two dissimilar electrochemical materials come in contact with a fluid within the body; wherein the at least partially coated antenna has a first configuration prior to ingestion and a second configuration after ingestion; wherein the at least partially coated antenna comprises a first end and a second end and defines an effective area related to the distance between the first and second ends, wherein the effective area in the first configuration is different than the effective area in the second configuration; and wherein the ingestible battery and the at least partially coated antenna are exposed to the body fluid during operation after the wall is at least partially dissolved in the body fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system comprising:
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a wall configured to dissolved in body fluid; an ingestible identifier located within the wall, the ingestible identifier comprising an integrated circuit configured to emit a signal when activated at a target site within a body, wherein the integrated circuit comprises a signal generation element coupled to an antenna that is at least partially coated configured to transmit the signal outside the body; an ingestible battery located within the wall, the ingestible battery comprising two dissimilar electrochemical materials which constitute an anode and a cathode of the battery, wherein the battery produces a potential difference to drive the signal generation element when the two dissimilar electrochemical materials come in contact with a fluid within the body; wherein the at least partially coated antenna has a first configuration prior to ingestion and a second configuration after ingestion; wherein the at least partially coated antenna comprises a first end and a second end and defines an effective area related to the distance between the first and second ends, wherein the effective area in the first configuration is different than the effective area in the second configuration; a receiver located outside the body, the receiver configured to detect the signal produced by the signal generation element; and wherein the ingestible battery and the at least partially coated antenna are exposed to the body fluid during operation after the wall is at least partially dissolved in the body fluid. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An ingestible event marker comprising:
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a wall configured to dissolve in body fluid; an ingestible identifier located within the wall, the ingestible identifier comprising an integrated circuit configured to emit a signal when activated at a target site within the body, wherein the integrated circuit comprises a signal generation element coupled to a low profile antenna that is at least partially coated and configured to transmit the signal to a receiver located outside the body; an ingestible battery located within the wall, the ingestible battery comprising two dissimilar electrochemical materials which constitute an anode and a cathode of the battery, wherein the battery produces a potential difference to drive the signal generation element when the two dissimilar electrochemical materials come in contact with a fluid within the body; wherein the at least partially coated low profile antenna has a first configuration prior to ingestion and a second configuration after ingestion; wherein the at least partially coated low profile antenna comprises a first end and a second end and defines an effective area related to the distance between the first and second ends, wherein the effective area in the first configuration is different than the effective area in the second configuration, wherein the second configuration is more flexible than the first configuration; and wherein the ingestible battery and the at least partially coated low profile antenna are exposed to the body fluid during operation after the wall is at least partially dissolved in the body fluid. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification