A second device comprises at least one ADC. The ADC(s) are configured to receive a composite analog signal. The composite analog signal comprises a plurality of modulated signals. Each signal in the modulated signals has been modulated to a distinct center frequency. Each signal in the modulated signals has originated from a sensor. At least two of the signals in the modulated signals comprise a plurality of frequency components. The ADC(s) are configured to convert the modulated signals into a digital signal. The second device comprises at least one control unit. The control unit(s) are configured to receive the digital signal. The control unit(s) are configured to perform: band pass filtering, frequency demodulation, and extraction of the signals sensed by the sensors.

A blood pressure detection method is provided. The method comprising: obtaining wrist circumference data, wrist fat thickness data, and blood pressure data and correcting the blood pressure data based on the wrist circumference data and the wrist fat thickness data.

Techniques are described for non-invasive, cuff-less measurement of blood pressure of a user using a portable electronic device. Illumination is projected through a body part and received by photodetectors on the other side of the body part. The body part includes elastic pathways of the circulatory system through which blood flows. Cycles of contraction and relaxation by the heart cause pulse waves to travel through the blood, which cause volumetric changes in the elastic pathways. The transient changes in blood volume result in corresponding transient changes in the amount of illumination that is absorbed by the body part versus the amount that passes through to the photodetectors, as manifest by a detection output signal. Calibration data can be used to convert the detection output signal to blood pressure measurements, such as including diastolic and systolic blood pressure readings.

Provided is a display device including a plurality of normal display pixel, one boost display pixel having a higher maximum luminance than the plurality of normal display pixels, and one light-receiving pixel disposed adjacent to the boost display pixel. Each of the normal display pixel, the boost display pixel, and the light-receiving pixel includes a first electrode, a second electrode, and an active layer, which is interposed between the first and second electrodes. The first electrodes of the normal display pixel, the boost display pixel, and the light-receiving pixel are disposed in the same layer. The second electrodes of the normal display pixel, the boost display pixel, and the light-receiving pixel are integrally connected to one another.

A blood pressure lowering training device comprises a head frame unit corresponding to a user's head shape, an audio stimulation unit for broadcasting binaural beats with frequency following response to both ears of the user, a display unit including a display module for displaying a virtual image and blood pressure information and a blood pressure measurement module for measuring blood pressure, and a control unit electrically connected with the audio stimulation unit and the display unit, so that the hypertensive patient can perform a variety of adjustable blood pressure lowering training in one use process, and effectively improve the use intention of the hypertensive patient.

A bi-directional perfusion cannula is provided that includes an elongate tube for insertion into an artery. The elongate tube has a first aperture at a distal end of the tube which is forward during insertion and configured so that blood can flow into the artery in the direction of insertion, an elbow formed in the elongate tube, and a second aperture formed in or slightly rearward of the elbow and configured for supplying blood into the artery in a second direction which is generally opposite to the insertion direction.

Methods, systems, and devices for optical signal measurement are described. A wearable electronic device may activate a first combination of optical sensors, the first combination of optical sensors including a set of transmitter sensors and a set of receiver sensors. In some cases, one or more optical sensor of the first combination of optical sensors may be positioned under a protrusion on an inner surface of the wearable electronic device. The device may measure, at the set of receiver sensors at a first time, one or more signals from the set of transmitter sensors, determine a signal quality metric associated with the one or more signals, and select a second combination of optical sensors for use at a second time based on the signal quality metric.

A sphygmomanometer includes a frame that spatially demarcates a region in which a display screen is displayed. On the display screen, a scale indication for making a value of pressure readable is displayed along one direction. On the display screen, a mark that represents a pressure of a cuff by a position of the mark with respect to the scale indication is displayed. When the pressure changes, a display control unit performs control to slide the scale indication with respect to the frame along the one direction at a slide speed corresponding to a predetermined pressure change rate or a pressure change rate obtained by actual measurement in a pressurizing process or a depressurizing process of the cuff so that the mark falls within the frame.

Provided is a sensor module according to the present disclosure including a base portion, a first pressure sensor portion and a second pressure sensor portion coupled to the base portion and arranged adjacent to each other, and a hard structure layer coupled to an upper portion of the first pressure sensor portion. A step difference of a first distance is formed between an upper portion of the hard structure layer and the upper portion of the second pressure sensor portion.

A biological information analyzing device includes: an indicator extraction unit that extracts an indicator pertaining to a characteristic of a blood pressure waveform using data of the blood pressure waveform obtained by a sensor, which is worn on a user's body and can non-invasively measure the blood pressure waveform for each of heartbeats, continuously measuring the blood pressure waveform; and a processing unit that carries out a process based on the extracted indicator.