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 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.

A wearable device includes a wearable device main body, a sensor part configured to contact a skin surface of a user of the wearable device, and measure a bio-signal of the user, and a shock absorber that is interposed between the wearable device main body and the sensor part to mechanically connect the wearable device main body and the sensor part, and that is configured to reduce motion transmission between the wearable device main body and the sensor part to permit the wearable device main body to move independently from the sensor part.

A tourniquet includes a surrounding device, a measuring portion, and an elastic band portion connected in series, wherein the measuring portion defines an accomodating space for placing an air bag device with an elastic air bag. A radial resonant ring formed by connecting the measuring portion and the elastic band portion in series can reduce the influence of non-radial vibration, so as to improve the sensitivity and accuracy of the radial resonance of the tourniquet of the present disclosure.

A pulse wave detecting device includes: a pressure pulse wave detector which is configured to press a pressing surface in which a pressure detecting element is formed, against a radial artery under a skin of a wrist of a subject, and which is configured to detect a pressure pulse wave from the radial artery; and a housing which accommodates the pressure pulse wave detector in a state where the pressing surface is exposed toward the wrist. The housing is configured so that a compression pressure which is exerted by the housing in an attachment state where the housing is attached to the wrist, and which is applied onto the radial artery is smaller than a compression pressure which is exerted by the pressing surface in the attachment state, and which is applied onto the radial artery.

An apparatus device may include a bio-impedance sensor configured to take a bio-impedance measurement from a body of an individual, an optical sensor configured to take an optical measurement from the body of the individual, and a processing device configured to receive a first bio-impedance measurement from the bio-impedance sensor taken during a first period of time and a first optical measurement from the optical sensor taken during the first period of time, receive first location information of the individual during the first period of time, determine a first correlation between a physiological parameter and at least one of the first location, the first bio-impedance measurement, or the first optical measurement, and determine a first level of the physiological parameter based on the first correlation.

The present disclosure relates to optical methods and devices based on pulsate behavior of blood and optical absorption spectroscopy to measure the level of water and/or other substances or compounds, such as an alcohol or lipid, in the blood and the tissues surrounding blood vessels and arteries.

A flexible sheet for neurostimulation has a flexible non-conductive substrate matrix in which electrodes are embedded along a lower surface. Electrically conductive wires extend from the electrodes through the flexible substrate to another exterior surface of the substrate. Methods of making the flexible sheet and making a device using the flexible sheet are also disclosed.

The present invention is related to a biological data sensor for measuring biological data from a user. The biological data sensor comprises a sensing module and a wearable charging module. The sensing module is formed by flexible printed circuit (FPC) and attached to the user's skin. The sensing module includes light emitting units, at least one sensing unit, and a rechargeable battery. The light emitting unit emits a first sensing light onto the user's skin. The first sensing light is transmitted onto the user's skin and reflected from the user's skin as a second detecting light. The sensing unit receives the second sensing light and outputs the biological data. The rechargeable battery is electrically connected to the light emitting units and the sensing unit, and the rechargeable battery provides power to the light emitting units and the sensing unit. The wearable charging module is worn on a part of the user adjacent to the sensing module. The wearable charging module includes a charger and a first transmitter. The first transmitter is electrically connected to the charger, obtains power from the charger, wirelessly transmits the power to the rechargeable battery of the sensing module, and receives the biological data from the sensing module.