In-body device with virtual dipole signal amplification
First Claim
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1. An ingestible event marker comprising:
- an identifier configured to emit a signal when it contacts a target site, wherein the identifier comprises;
a first signal transmission element; and
a second signal transmission element arranged in an opposing spaced relationship to the first signal transmission element, the first and second opposing signal transmission elements are configured to produce an actual dipole having a predefined dipole length; and
an electrically insulative signal amplification element disposed between the first and second signal transmission elements configured to produce a virtual dipole having a length defined by the signal amplification element, wherein the virtual dipole length is larger than the actual dipole length.
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Abstract
Virtual dipole signal amplification for in-body devices, such as implantable and ingestible devices, is provided. Aspects of the in-body deployable antennas of the invention include antennas configured to go from a first configuration to a second configuration following placement in a living body, e.g., via ingestion or implantation. Embodiments of the in-body devices 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.
876 Citations
17 Claims
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1. An ingestible event marker comprising:
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an identifier configured to emit a signal when it contacts a target site, wherein the identifier comprises; a first signal transmission element; and a second signal transmission element arranged in an opposing spaced relationship to the first signal transmission element, the first and second opposing signal transmission elements are configured to produce an actual dipole having a predefined dipole length; and an electrically insulative signal amplification element disposed between the first and second signal transmission elements configured to produce a virtual dipole having a length defined by the signal amplification element, wherein the virtual dipole length is larger than the actual dipole length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system comprising:
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(a) an ingestible event marker comprising an identifier including a signal generation element configured to emit a signal when it contacts a target site, wherein the identifier comprises; a first signal transmission element; and a second signal transmission element arranged in an opposing spaced relationship to the first signal transmission element, the first and second opposing signal transmission elements configured to produce an actual dipole having a predefined dipole length; and an electrically insulative signal amplification element disposed between the first and second signal transmission elements configured to produce a virtual dipole having a length defined by the signal amplification element, wherein the virtual dipole length is larger than the actual dipole length; and (b) a receiver configured to detect a signal produced by the signal generation element. - View Dependent Claims (14, 15, 16, 17)
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Specification