Patent ID: 11918342
Assignee: BIORA THERAPEUTICS, INC.
Field: Medical technology (Instruments)
Classification: CPC A  G  Y | IPC A  G

Claim 0:
1. A method of determining a location of an ingestible medical device, the device having a housing shaped as a pill or capsule, within a gastrointestinal tract of a body,
the method including the steps of:
transmitting a first illumination at a first wavelength and a second illumination at a second wavelength towards an environment external to a housing of the ingestible device and detecting a first reflectance from the environment resulting from the first illumination and a second reflectance from the environment resulting from the second illumination, wherein the first reflectance has a value indicative of an amount of light in the first reflectance, and the second reflectance has a value indicative of an amount of light in the second reflectance;
storing a ratio of the first reflectance value and the second reflectance value in a data set, the data set including a plurality of values, each of the plurality of values corresponding to a respective ratio of a respective first reflectance and a respective second reflectance detected at a respective time;
obtaining, from the data set, a first subset of values, the first subset of values corresponding to a first predetermined number of stored ratios of recent first reflectances and second reflectances, the recent first reflectances and second reflectances detected during a recent time range;
obtaining, from the data set, a second subset of values, the second subset of values corresponding to a second predetermined number of stored ratios of past first reflectances and second reflectances, the past first reflectances and second reflectances detected during a past time range, wherein the recent time range is separated from the past time range by a predetermined period of time; and
identifying a change in the location of the ingestible device within the gastrointestinal tract of the body based on a difference or a ratio between a first mean value and a second mean value exceeding a threshold level; wherein the first mean value is the mean of the first subset of values and the second mean value is the mean of the second subset of values.