The invention discloses a measurement element (100, 500, 600, 700) for an oral care device. The measurement element comprises at least one elongate ridge element (102) for engaging an interproximal region or adjacent teeth within an oral cavity, and at least a first sensing region (104) for acquiring data from gingival tissue within the oral cavity. The invention also discloses an oral care device (10), an attachment (1000) for an oral care device.

A sensor includes: a transmitting antenna with N transmitting antenna elements transmitting transmission signals; a receiving antenna with M receiving antenna elements, each receiving N received signals including a reflection signal generated by the living body reflecting part of the N transmission signals; a circuit; and a memory. The circuit extracts a second matrix corresponding to a specified frequency range from an NM first matrix calculated from each received signal and indicating a propagation property between each transmitting antenna element and each receiving antenna element, estimates the position where the living body is present using the second matrix, calculates a radar cross-section (RCS) value of the living body based on the estimated position and the positions of the transmission and receiving antennas, and estimates the motion of the living body using the calculated RCS value and information indicating correspondence between RCS values and motions of the living body.

Methods and systems for monitoring blood pressure in a person are disclosed. A method for monitoring a blood pressure in a person involves transmitting millimeter range radio waves over a three-dimensional (3D) space below the skin surface of a person, receiving radio waves on multiple receive antennas, the received radio waves including a reflected portion of the transmitted radio waves that is reflected by blood in a blood vessel in the 3D space, isolating a signal that corresponds to the portion of the transmitted radio waves that is reflected by blood in the blood vessel in response to receiving the radio waves on the multiple receive antennas, and outputting a signal that corresponds to a blood pressure level in the person in response to the isolated signal.

The apparatus includes a sensor having a multi-portion dielectric composite. A microstrip transmission line is formed on the dielectric composite and includes an input section, radiator portion, and an output section. The dielectric material adjacent the radiator portion is selected to substantially match that of the certain portions of a live organism being sensed, allowing other constituents of the organism to be sensed. This allow the radiator portion to effectively respond as if it were embedded inside the organism, removing substantial uncertainly from the measurement process. By then applying a plurality of signals to the sensor, the reflected and transmitted components of the signal can be measured and used to determine the amount of certain constituents are present in the organism.

A single non-thermal atmospheric plasma generation device is used to detect and analyze vital fields of a living subject to determine the presence of a condition, such as an illness or injury, and responsively modify characteristics of the plasma to treat, heal, or alleviate the condition. The device includes a capacitance dielectric discharge array of plasma emitters, and a controller having a power supply, a transformer, and circuit components for driving the transformer at a resonant frequency of the plasma emitters to cause the plurality of plasma emitters to ionize surrounding air and produce the non-thermal plasma. The resonant frequency is around 60 GHz and harmonics thereof. A receiver of the device recovers frequency mixing products from the plasma, which are extracted by signal processing circuitry; signals in the VHF and UHF bands are extracted and analyzed to determine whether signatures of particular vital fields are present.

Methods for training a model for use in monitoring a health parameter in a person are disclosed. In an embodiment, a method involves monitoring a blood pressure of a person using a control blood pressure monitoring system, receiving control data that corresponds to the monitoring using the control blood pressure monitoring system, receiving stepped frequency scanning data that corresponds to radio waves that have reflected from blood in a blood vessel of the person, wherein the stepped frequency scanning data is collected through multiple receive antennas over a range of frequencies, generating training data by combining the control data with the stepped frequency scanning data in a time synchronous manner, and training a model using the training data to produce a trained model, wherein the trained model correlates stepped frequency scanning data to values that are indicative of a blood pressure of a person.

Provided is a technique for detecting a state of an occurrence of a body motion of a measurement target person affecting measurement by using an apparatus configured to measure biological information using a radio wave. A biological information measurement apparatus (1) according to an aspect of the present disclosure includes: a transmitter (3) configured to transmit a radio wave to a measurement site of a living body; a receiver (4) configured to receive a reflected wave of the radio wave by the measurement site and output a waveform signal of the reflected wave; a feature extractor (1051) configured to extract information indicating a feature of a waveform from the waveform signal; and a body motion detector (1052) configured to detect a state of an occurrence of a body motion of the living body affecting measurement of the biological information, based on the extracted information indicating the feature of the waveform.

A microwave radiometric sensor probe module configured to fit within at least an external portion of an auditory or ear canal of a patient encloses a microwave integrated circuit and associated waveguide printed probe. The probe is configured to receive microwave radiation from a dielectric rod antenna of the module oriented into the auditory canal towards a tympanic membrane. Radiation from the tympanic membrane is coupled into the rod antenna, projected towards the printed probe, and received at the integrated circuit. A communications interface connects the integrated circuit to a temperature monitor and control unit for receiving the sensor output and for deriving at least a measure of patient brain temperature from the sensor output. The temperature monitor and control unit may be connected to a targeted temperature management system for controlling the temperature of a patient on the basis of the derived brain temperature.

A system for estimating breathing frequency and heartbeat frequency of a subject, comprises at least one ultra-wideband (UWB) transceiver, connected to at least one hardware processor, configured to: receive a plurality of readings from the UWB transceiver, each of the readings having a time and comprising a plurality of intensity values at the time, each of the intensity values having a corresponding distance value representing a distance between the UWB transceiver and the subject; determine a Range-Doppler map from the plurality of readings; analyze the Range-Doppler map to determine a breathing frequency value of the subject; perform null steering of a plurality of Doppler-map frequencies in the Range-Doppler map to nullify the breathing frequency value and integer multiples of the breathing frequency value to obtain a plurality of combined frequencies; and determine a heartbeat frequency value for which a plurality of computed frequencies corresponds with the plurality of combined frequencies.

A system and method for monitoring lung water content of a patient. The system may include at least two microwave sensors and a processor. The system may transmit one or more microwave signals into the thorax of a patient using one or more of the microwave sensors. The system may then receive one or more of the microwave signals using one or more of the microwave sensors. The one or more received microwave signals may each have at least one associated frequency component with a magnitude and a phase. The system may analyze the phase of one or more received microwave signals to monitor changes in the lung water content. The system may analyze the magnitude of one or more received microwave signals to determine whether the lung water content is increasing or decreasing.