A sphygmomanometer includes: a sensing cuff that includes a second sheet disposed to face the pressing member's inner circumferential surface and a first sheet facing the second sheet; a fluid storage control part providing a control of supplying and storing the pressure-transmitting fluid into sensing cuff in a worn state wherein the pressing member and sensing cuff are worn on the wrist; and a blood-pressure calculating part calculating a blood pressure based on a pressure of the pressure-transmitting fluid stored in the sensing cuff. The fluid storage control part supplies fluid in the worn state such that the first and second sheets are in contact with each other in a region corresponding to an ulna, a region corresponding to a radius, and a region corresponding to a tendon while first and second sheets are separated from each other in regions corresponding to two arteries that are radial and ulnar arteries.

Techniques are described for integrating blood pressure measurement (BPM) into a portable electronic device. For example, an input interface of the device includes an integrated force sensor. Human-discernable feedback is output to the user, while using the force sensor to monitor fingertip pressure being applied by the user on the input interface, to guide the user into a first condition in which capillary fingertip blood flow (CFBF) is occluded. The human-discernable feedback is then output to the user, while continuing to use the force sensor to monitor the fingertip pressure, to guide the user into one or more subsequent conditions that allow non-occluded CFBF signals to be sensed by one or more sensors (e.g., the force sensor, an optical fingerprint sensor, etc.). The sensed non-occluded CFBF signals can be used to generate one or more CFBF-based BPM readings for the user (e.g., which can be calibrated to arterial BPM).

What is disclosed is a system for measurement and analysis of blood pressure of a test subject comprising a blood pressure measuring cuff unit; a waveform analysis subsystem coupled to said blood pressure measuring cuff unit via a network; and wherein said cuff unit acquires a digital pulse pressure waveform from a wrist of the test subject, said digital pulse pressure waveform is transmitted over said network to said waveform analysis subsystem, and said waveform analysis subsystem processes said digital pulse pressure waveform to extract one or more blood pressure parameters and hemodynamic parameters.

A blood pressure measuring device includes a curler configured to bend along a circumferential direction of a wrist of a living body, and configured to come into contact with a portion of the wrist at least between a dorsal side and a palmar side; a strap provided to a device main body, and configured to cover an outer surface of the curler; a sensing cuff arranged in a region of the wrist where arteries exist; a back plate provided on a side of the sensing cuff nearer to the curler; a rubber plate provided on a side of the back plate nearer to the curler; a pressing cuff provided between the curler and the rubber plate; and a cuff provided on a side of the curler nearer to the living body and arranged on the dorsal side of the wrist.

A pressure sensitive device including a body having a proximal portion and a distal portion opposite the proximal portion, the distal portion being made of a shape memory alloy, a flexible diaphragm at least partially surrounding the body and defining a fluid chamber between the flexible diaphragm and the distal portion of the body, and a non-compressible fluid disposed within the flexible diaphragm and exhibiting a hydraulic pressure in communication with the flexible diaphragm.

According to one aspect, a medical device may be configured to couple to a body. The medical device may comprise a material layer; a plurality of adhesive layers coupled to the material layer and configured to couple to a user's skin, wherein each adhesive layer of the plurality of adhesive layers includes a plurality of micro passages; a channel extending between two adjacent adhesive layers of the plurality of adhesive layers; and a superhydrophobic coating covering at least a portion of each of the two adjacent adhesive layers and the material layer forming the channel.

A modular wristband and sensor system and method of using the same are disclosed. The system uses top and bottom sensor modules that contain conductive ports for connection to wristbands' conductive ports. The wristbands' conductive ports are electrically connected to wires embedded within each wristband segment. These allow for the transfer of data and power between the bands and the top and bottom sensor modules. Having power and data conducted through wristbands into sensors makes it possible for wristband sensors to have swappable bands while maintaining connectivity. Other embodiments include a wristband that includes swappable top and bottom sensor modules communicating wirelessly with each other.

While power consumption is suppressed, biological information is measured without fail when a condition of a subject changes. An aspect of the present invention is configured to acquire a biological signal related to a beat of a heart of the subject from a biometric sensor, detect a feature of the biological signal from the biological signal acquired, determine an abnormal change in the feature based on the feature detected and first threshold information set in advance, set an operation mode of the biometric sensor to a continuous operation mode when the abnormal change in the feature is determined, and set the operation mode of the biometric sensor to an intermittent operation mode in a period without the abnormal change.

According to various embodiments, a wearable electronic device comprises a memory, a first sensor, a second sensor, and a processor, wherein the processor may be configured to, obtain a user's first biometric signal in a user's first posture through the first sensor, obtain, from an external electronic device, information about the user's first blood pressure value measured by the external electronic device in the first posture, obtain first calibration information for quantifying first blood pressure information measured in the first posture, based on information about features of the first biometric signal and the first blood pressure value, identify whether calibration data sets for a plurality of postures of the user, pre-stored in the memory, meet a specific condition for estimating second calibration information for quantifying second blood pressure information measured in the user's second posture, and when the calibration data sets meet the specific condition, estimate the second calibration information based on the calibration data sets and the first calibration information.

A single-arm micro air-pressure pump device, having an air pump body and a driving unit. The air pump body includes a supporting frame, an air chamber unit coupled to a side of the supporting frame, and a swing arm provided on the air chamber unit. The driving unit is fixed on the supporting frame and has an output shaft. The output shaft is provided with an eccentric shaft and is configured to rotate the eccentric shaft, and the eccentric shaft has an end coupled to the output shaft and an opposite end coupled to the swing arm in order to drive the swing arm into a reciprocating motion between at least a proximal position and a distal position with respect to the air chamber unit. The reciprocating motion pushes a piston unit provided on one end of the swing arm and causes the air output.