Biosensor capsule and system
AssigneeEnterasense Limited
InventorsMaria Chiara Dicarlo, Donal Devery
Life of this patent
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Abstract
A biosensor system has a capsule with a housing configured for ingesting in a mammal GI tract, being cylindrical with domed ends. The housing forms an external space akin to a “cut-out” shape with two opposing transparent walls facing each other in the longitudinal direction and a base wall facing radially. An LED emitter emits at a number of wavelengths in time sequence, and radiation is detected by a photo-detector via the wall which forms a concave lens. An antenna is for wireless transmission of data to an external device and is in the form of conical spiral in an overall conical shape, located for optimum space efficiency in a domed end. A battery compartment is at the opposed end of the housing, separated from the antenna by the external space.
Claims13
A biosensor system comprising:
- a capsule comprising:
- a housing configured for ingesting in a mammal GI tract and having a longitudinal axis, at least some portions of the housing being transparent to radiation of a sensing wavelength, and wherein the housing is configured to form an external space which is open to access by fluids,
- a radiation emitter and a radiation detector arranged to emit radiation into said external space and to detect radiation from said external space, through said transparent portions of the housing,
- a drive circuit for the radiation emitter and a signal processing circuit linked to the detector, and
- an interface with an antenna for wireless transmission of data to a processor for locally processing and storing detection data,
- wherein the emitter comprises a plurality of emitter devices each adapted to emit at a particular wavelength and the drive circuit is configured to activate each emitter device according to a time multiplex scheme,
- the signal processing circuit being configured to determine a ratio of far red/red to indicate old blood and a ratio of far red/green for fresh blood.
Dependencies are inferred from the claim text.