The present invention relates to a wearable sensor device and method for a thermogenic and/or psychogenic stress response of a subject. The wearable sensor device comprises a first electrode (11) configured to contact a first non-glabrous skin part of the subject, a second electrode (12) configured to contact a second non-glabrous skin part of the subject, a third electrode (13) configured to contact a glabrous skin part of the subject, and a skin conductance sensor (14) configured to provide a voltage signal between a positive input terminal (141) and a negative input terminal (142) and to measure a skin conductance signal at an output terminal (143). A switching arrangement (15) switches connections between the first to third electrodes and the positive and negative input terminals of the skin conductance sensor between at least three switching states. A processing unit (15) determines a 10 thermogenic and/or sychogenic stress response from the measured skin conductance signals during the at least three switching states.

An airbag (10), a blood pressure measurement apparatus, and a blood pressure measurement method are provided. The blood pressure measurement apparatus includes a cavity (20), a pressing part (30), an air pump (40), a barometric pressure sensor (50), and an airbag (10). The airbag (10) is long-strip-shaped, the airbag (10) has a fixed end (113) and a free end (115), the fixed end (113) is fixed in the cavity (20), a plurality of grooves (101) are distributed on a surface of the airbag (10) along a length extension direction, and the grooves (101) extend along a width direction of the airbag (10). Each groove (101) can divide the airbag (10) into a pressurized area (110) and a non-pressurized area (115) along the length direction when the pressing part (30) movably disposed in the cavity (20) is pressed against the groove (101). The pressurized area (110) and the non-pressurized area (115) isolate air flow from each other, air holes (102) connecting the inside and the outside of the airbag (10) are distributed between every two adjacent grooves (101), and the cavity (20) is configured to accommodate the non-pressurized area (115) of the airbag (10), and when the airbag (10) does not work, accommodate the entire airbag (10). The blood pressure measurement apparatus in this application can adjust ratios of the pressurized area to wrist circumferences of different people. This improves blood pressure signal collection stability and blood pressure measurement accuracy.

A band device according to an aspect of the present disclosure includes a sensor unit, and a band unit that is linked to the sensor unit and forms a hollow part together with the sensor unit. The band unit includes an end piece section to which a watch head section is attached, and an engaging section that makes detachable engagement in a state where the band unit is wrapped around a wrist.

A fluid circuit of a blood pressure measurement device includes a first cuff connected to a secondary side of a pump that supplies a fluid to a secondary side, a second cuff connected to a secondary side of the first cuff, a first valve provided between the first cuff and the second cuff, the first valve that closes when a differential pressure between the first cuff and the second cuff reaches a predetermined differential pressure, and a fluid resistor provided between the first valve and the second cuff.

A portable electronic device configured to be positioned on a users wrist, the portable device being configured to perform an electrocardiogram, ECG, the portable electronic device includes a watchcase, a case back, configured to be at least partially in contact with the skin of the wrist, a glass, a bezel, mounted on the watchcase and surrounding the glass, movable in rotation with respect to the watchcase, a first ECG electrode, made of conductive material, on the case back and configured to be in contact with the skin of the wrist, a second ECG electrode, made of conductive material, on the bezel, an ECG electronic module, electrically connected to the first ECG electrode and the second ECG electrode, and configured to receive and process electrical signals from a user and retrieved by the ECG electrodes, to perform an electrocardiogram.

The present invention provides a photodiode for a wearable sensor system, the photodiode having a rectangular active area sensitive to wavelengths within the spectral range of 1200 nm to 2400 nm. The present invention also provides a wearable sensor system comprising the photodiode.

A biological-measurement device includes a light-emitting unit configured to emit light on a body of a test-subject, a light-detecting unit configured to detect light reflected in the body of the test-subject, a control-unit configured to calculate information regarding a pulse-wave of the body of the test-subject based on the light detected by the light-detecting unit, a circuit-board that is flexible and has a first-surface on which the light-emitting unit and the light-detecting unit are provided, the circuit-board further having wiring connecting the light-emitting unit and the control-unit together and connecting the light-detecting unit and the control-unit together, a shielding-unit that is provided on the first-surface, the shielding-unit being situated between the light-emitting unit and the light-detecting unit and configured to protrude beyond the light-emitting unit and the light-detecting unit in a direction perpendicular to the first-surface, and an adhesive-part for firmly contacting with the body of the test-subject.

Systems are provided for generating data representing electromagnetic states of a heart for medical, scientific, research, and/or engineering purposes. The systems generate the data based on source configurations such as dimensions of, and scar or fibrosis or pro-arrhythmic substrate location within, a heart and a computational model of the electromagnetic output of the heart. The systems may dynamically generate the source configurations to provide representative source configurations that may be found in a population. For each source configuration of the electromagnetic source, the systems run a simulation of the functioning of the heart to generate modeled electromagnetic output (e.g., an electromagnetic mesh for each simulation step with a voltage at each point of the electromagnetic mesh) for that source configuration. The systems may generate a cardiogram for each source configuration from the modeled electromagnetic output of that source configuration for use in predicting the source location of an arrhythmia.

Athletic activity may be tracked while providing encouragement to perform athletic activity. For example, energy expenditure values and energy expenditure intensity values may be calculated and associated with a duration and type of activity performed by an individual. These values and other movement data may be displayed on an interface in a manner to motivate the individual and maintain the individual's interest. The interface may track one or more discrete “sessions”. The sessions may be associated with energy expenditure values during a duration that is within a second duration, such as a day, that is also tracked with respect to variables, such as energy expenditure. Other individuals (e.g., friends) may also be displayed on an interface through which a user's progress is tracked. This may allow the user to also view the other individuals' progress toward completing an activity goal and/or challenge.

A method of generating a model for generating a synthetic electrocardiography (ECG) signal comprises: receiving subject-specific training data for machine learning, said training data comprising a photoplethysmography (PPG) signal acquired from the subject and an ECG signal acquired from the subject, wherein the ECG signal provides a ground truth of the subject for associating the ECG signal with the PPG signal; using associated pairs of a time-series of the PPG signal and a corresponding time-series of the ECG signal as input to a deep neural network, DNN; and determining, through the DNN, a subject-specific model relating the PPG signal of the subject to the ECG signal of the subject for converting the PPG signal to a synthetic ECG signal using the subject-specific model.