IN-BODY DEVICE WITH VIRTUAL DIPOLE SIGNAL AMPLIFICATION
First Claim
1. An ingestible event marker comprising an identifier that emits a signal when it contacts a target site, wherein said identifier comprises a first element and a second transmission element having a first actual dipole length and a signal amplification element that produces a virtual dipole length between said first and second transmission elements that is larger than said first 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.
244 Citations
29 Claims
- 1. An ingestible event marker comprising an identifier that emits a signal when it contacts a target site, wherein said identifier comprises a first element and a second transmission element having a first actual dipole length and a signal amplification element that produces a virtual dipole length between said first and second transmission elements that is larger than said first actual dipole length.
- 27. An in-body device comprising a virtual dipole signal amplification element.
Specification