A removable smartphone case is disclosed. The removable smartphone case includes a case body configured to receive a smartphone, a radio frequency (RF) front-end connected to the case body and including a semiconductor substrate and an antenna array including at least one transmit antenna configured to transmit radio waves below the skin surface of a person and a two-dimensional array of receive antennas configured to receive radio waves, the received radio waves including a reflected portion of the transmitted radio waves, wherein the semiconductor substrate includes circuits configured to generate signals in response to the received radio waves, a communications interface connected to the case body and configured to transmit digital data that corresponds to the signals generated by the semiconductor substrate from the removable smartphone case, and an alignment feature integrated into the case body and configured to align the antenna array with an object.

Provided is a blood pressure measuring apparatus including: a pressurizing unit applying pressure to a blood vessel according to a first condition or a second condition; a pressure sensor sensing a sphygmus wave and a pressure of the blood vessel from the blood vessel under the first condition or the second condition; a standard blood pressure calculating unit for calculating a systolic standard blood pressure and a diastolic standard blood pressure; a continuous blood pressure calculating unit for calculating continuous blood pressure; and a repressurizing determining unit for determining whether pressure is applied to the blood vessel under the second condition during measuring of continuous blood pressure.

A measurement device and method for measuring psychology stress index and blood pressure is disclosed. When the measurement device is in the psychology stress measurement mode and a pressurizing motor unit is pressurizing an airbag unit with a variable speed, the micro-processor unit may control the pressurizing motor unit to stop pressurizing the airbag unit after the pressure signal is determined as a pulse signal, and the micro-processor unit may measure the pulse signal to determine the psychology stress index. The psychology stress index is a ratio of SDNN and RMSSD according to interval data of the pulse signal within a period of time.

A pulse wave analyzing apparatus comprises an acquiring section (11) which acquires a pulse wave that is non-invasively measured, and an analyzer (12) which calculates data on the frequency axis by using the pulse wave, and which obtains the index value of the respiratory-induced variation based on the calculated data on the frequency axis.

A Virtual Patient Care (VPC) platform establishes a video call between a patient application and a clinician application. During the video call Selfie Vitals are measured using the selfie camera on the patient's smartphone. The patient's video is paused to the clinician and sent to Artificial Intelligence (AI) engines using remote Photoplethysmography (rPPG) or Transdermal Optical Imaging (TOI) techniques to extract vital signs. Pulse, blood pressure, oxygen saturation, and respiration rate vital signs are generated and displayed on the clinician' s user interface. Audio continues while video conferencing may be paused during vitals measurement. The patient's smartphone can perform pre-processing to generate metadata that is sent to a VPC server with more powerful AI engines. Vitals measurement can be initiated by the patient selecting a Selfie Vitals icon on a patient user interface during the video conference call or can be initiated by the clinician.

An apparatus for non-invasively measuring bio-information is provided. The apparatus for estimating bio-information may include a pulse wave sensor including a plurality of channels, and configured to measure pulse wave signals at a plurality of points of an object; and a processor configured to generate oscillograms corresponding to the plurality of channels based on the pulse wave signals measured by the plurality of channels; determine a channel, from among the plurality of channels, for estimating the bio-information based on the oscillograms; and estimate the bio-information based on an oscillogram of the channel.

In one embodiment, a method includes accessing first time-series data based on electromagnetic radiation in a first spectrum and second time-series data based on electromagnetic radiation in a second spectrum. The method also includes comparing the first time-series data with the second time-series data and determining, based on the comparison, (1) whether a stopping condition associated with a device has occurred or (2) whether a discarding condition associated with the first time-series data or the second time-series data has occurred.

An apparatus for estimating cardiovascular information includes: a main body; and a strap connected to the main body and formed to be flexible to be wrapped around an object, wherein the main body may include: a pulse wave measurer configured to measure, from the subject, a first pulse wave signal by using a first light of a first wavelength, and a second pulse wave signal by using a second light of a second wavelength, the first wavelength being different from the second wavelength; a contact pressure measurer configured to measure a contact pressure between the object and the pulse wave measurer; and a processor configured to extract a cardiovascular characteristic value based on the first pulse wave signal, the second pulse wave signal, and change in the contact pressure, and estimate cardiovascular information based on the extracted cardiovascular characteristic value.

A blood pressure measurement method of acquiring a change in a blood pressure with respect to time includes a pulse wave acquisition step of acquiring a time waveform based on a volume pulse wave, a DN point detection step of detecting a DN point, which corresponds to a dicrotic notch point in a blood pressure waveform indicating the change in the blood pressure with respect to time, in the time waveform, and a waveform correction step of correcting the time waveform so that a time waveform value at the DN point becomes a predetermined blood pressure value and acquiring the change in the blood pressure with respect to time.

A system, device and method for automatically and remotely acquiring sensor data from a wearable patch mounted on a patient. An example device implemented as a wearable patch includes a sensor assembly comprising a plurality of sensors configured to detect a corresponding plurality of sensory modalities and generate electrical signals representing the sensory modalities. A signal converter receives the electrical signals from the plurality of sensors and converts the signals to sensor data signals comprising a data representation of at least one of the electrical signals. A communications interface communicates the sensor data signals to a sensor data processing system.