Abstract: A method for calibrating a blood pressure measurement device includes obtaining first blood pressure measurement information and a current confidence coefficient corresponding to the first blood pressure measurement information, determining the first blood pressure measurement information as blood pressure calibration information in response to the blood pressure measurement device comprising the historical calibration parameter list, and the current confidence coefficient being greater than or equal to a preset confidence coefficient or the historical confidence coefficient, and updating the historical calibration parameter list based on the first blood pressure measurement information and the current confidence coefficient.

Abstract: A technique for determining skin sodium content using bioimpedance spectroscopy includes applying a current at a predetermined frequency to skin of a subject, measuring a voltage across the skin of the subject produced by the current, determining a resistance across the skin of the subject at the predetermined frequency using the measured voltage, and determining skin sodium content using the measured voltage.

Abstract: A blood pressure measurement apparatus includes a measuring device that includes a plurality of pressure sensors and is for measuring blood pressure information for each heartbeat in a measurement target, and an arrangement state inferring unit for extracting a feature quantity from an output waveform of each of the pressure sensors for each heartbeat, and inferring an arrangement state of the measuring means relative to an artery that is the measurement target based on a distribution profile of values of the feature quantity for the plurality of pressure sensors. The apparatus also includes a reliability calculating unit for calculating a reliability of the blood pressure information measured by the measuring means, based on the inferred arrangement state.

Abstract: According to embodiments, a substantially coaxial arrangement of a camera, a light source, and an ultrasonic sensor can be positioned in an housing of a system that can be deployed from the tool port of a standard bronchoscope. Illumination from the light source facilitates positioning of the system by an operator using information from the camera. The ultrasonic system can determine when an object to be biopsied is adjacent to a biopsy needle.

Abstract: Systems and methods for detecting an anomaly in a cardiovascular signal using hierarchical extremas and repetitions. The traditional systems and methods provide for some anomaly detection in the cardiovascular signal but do not consider the discrete nature and strict rising and falling patterns of the cardiovascular signal and frequency in terms of hierarchical maxima points and minima points. Embodiments of the present disclosure provide for detecting the anomaly in the cardiovascular signal using hierarchical extremas and repetitions by smoothening the cardiovascular signal, deriving sets of hierarchical extremas using window detection, identifying signal patterns based upon the sets of hierarchical extremas, identifying repetitions in the signal patterns based upon occurrences and randomness of occurrences of the signal patterns and classifying the cardiovascular signal as anomalous and non-anomalous for detecting the anomaly in the cardiovascular signal.

Abstract: A system and method for estimating blood pressure (BP) using photoplethysmogram (PPG) has been explained. The PPG is captured from a PPG sensor (102). For preparing training model, a pulse oximeter is used for capturing PPG. For testing, a smartphone camera is used for capturing the PPG signal. A plurality of features are extracted from the preprocessed PPG signal. A BP distribution is then generated using the plurality of features and the training model. The BP distribution is part of a set of BP distributions generated from different subjects. Finally, a post-processing methodology have been used to reject inconsistent data out of the set of BP distributions and BP value is estimated only for the remaining BP distributions and a statistical average is provided as the blood pressure estimate.

Abstract: A system and method for accurately estimating cutaneous water loss resulting from exercise. The system comprises a component to determine the ambient temperature and a component to determine the total energy expenditure resulting from exercise. The cutaneous water loss is calculated with the equation: Cutaneous Water Loss=(m*(air temperature)+b)*(energy expenditure) where m is a function of air temperature and h is a constant.

Abstract: Apparatus and methods are described, including apparatus that includes an antenna (34), configured to, by drawing energy from a magnetic field, provide a main supply voltage. The apparatus further includes operational circuitry (46, 22) configured to operate only if a derived supply voltage, derived from the main supply voltage and supplied to the operational circuitry, is greater than a threshold value, and modulating circuitry (36, 40, 42), configured to modulate a load of the antenna by alternatingly (i) connecting current-drawing circuitry to the main supply voltage, thus causing the main supply voltage to drop below the threshold value, and (ii) disconnecting the current-drawing circuitry from the main supply voltage without disconnecting the operational circuitry from the main supply voltage. Other embodiments are also described.

Abstract: A device provides a first data signal that indicates an activity of at least one muscle of a patient that is relevant for an inspiratory breathing effort and a second data signal that indicates an activity of at least one muscle of the patient that is relevant for an expiratory breathing effort. The data signals are generated from electromyography (EMG) signals detected by surface electromyography sensors. A computer is configured to determine breathing phase information on the basis of a breathing signal and to check at least one of the electromyography signals or at least one of the separated signals for detectability of a heart signal component and further to assign the signals to an inspiratory breathing activity as well as to an expiratory breathing activity of the patient as a function of the breathing phase information.

Abstract: Provided in the embodiments of the present disclosure are a control method and device based on brain signal, and a human-machine interaction device, which periodically acquire EEG signals and cerebral oxygen signals within a target period, generate an electroencephalogram (EEG) wave curve representing changes of the EEG signals and a cerebral oxygen wave curve representing changes of the cerebral oxygen signals respectively within the target period, determine whether the EEG wave curve and the cerebral oxygen wave curve satisfy a condition for controlling a controlled device to perform a target operation, and control the controlled device to perform the target operation when the EEG wave curve and the cerebral oxygen wave curve satisfy the condition.

Abstract: A scoliosis diagnosis assistance device includes: a first shape information acquisition module configured to acquire back shape information representing the three-dimensional shape of a back of a subject; a second shape information acquisition module configured to acquire minor-symmetry information representing a three-dimensional shape having a minor-symmetry relationship with the three-dimensional shape of the back of the subject with respect to a sagittal plane of the three-dimensional shape; a deviation distribution acquisition module configured to acquire a distribution of deviation between the three-dimensional shape represented by the back shape information and the three-dimensional shape represented by the mirror-symmetry information; and an output controller configured to cause a display to display the distribution of deviation, for example.

Abstract: A sensor assembly of the present invention includes a fluid chamber. A pressure transmitting fluid disposed facing an artery passing portion of a part to be measured via a film which forms a part of an outer wall of the fluid chamber is accommodated in the fluid chamber. A pressure sensor is provided for detecting pressure of the pressure transmitting fluid as pressure applied to the artery passing portion of the part to be measured. Plate members each having a flat shape along a longitudinal direction of a wrist as the part to be measured are disposed on a side opposite to the part to be measured along the film.

Abstract: The present invention relates generally to a non-invasive device for monitoring blood pressure using principle of applanation tonometry. A novel device for measuring pressure pulse comprises a differential screw mechanism, a sensor module connected to the screw mechanism, and an overall enclosure housing the sensor module and the differential screw mechanism in one unit. A pair of straps is attached to the enclosure, wherein said straps as a flex lock brace through a hinge to change the angle of extension of the wrist as required. The multi component sensor module comprises of a snap-fit enclosure, which houses a tactile-based force sensitive resistor, and a mechanism to transmit the forces from the artery. The force transmission mechanism comprises of a gel layer and a gel head. The differential screw mechanism ensures precise hold down pressure in multiple stages via screwing and unscrewing steps to accurately measure the blood pressure.

Abstract: An electronic device for measuring hydrature, and a method for the same are disclosed. The electronic device includes a display, a capacitive sensor and a processor implementing the method, including setting an attribute of a capacitive sensor using a first value, acquiring a first data measurement from the capacitive sensor in when an external object contacts a display and determining that a touch input has occurred based on the first data, detecting whether the determined touch input satisfies a prespecified condition, setting the operational attribute of the capacitive sensor using a second value when the prespecified condition is satisfied, acquiring a second data measurement from the capacitive sensor while the external object contacts the display when the at least one operational attribute is set using the second value, and determining a hydrature value associated with the external object at least based on the acquired second data measurement.

Abstract: Methods and systems for express estimation of the arterial elasticity in a subject are presented. The methods and systems provide simplicity in measurement and the opportunity to measure the arterial elasticity through HRV. The method includes imposing a rhythmical stimulation at a frequency between about 0.06 Hz and 0.081 Hz to cause an oscillation on the cardiovascular system of a subject. The method further include measuring a response associated with the oscillation on the cardiovascular system and determining the arterial elasticity of the subject based on a level of the response associated with the oscillation.

Abstract: Disclosed herein are system, method and/or device embodiments for using a wireless mouthguard with pressure sensors for measuring bite compression forces generated by a bruxism patient during sleep. A system comprises a mouthguard and a microelectromechanical system (MEMS) coupled to a portion of the mouthguard covering an axial plane of a tooth. The MEMS comprises an antenna, a capacitive sensor, a microcontroller, and a power supply. The sensor generates sensor signals corresponding to a force generated by a mouthguard wearer's bite. The MEMS may then transmit data describing the wearer's bite force over a period of time to an external computing device for display and analysis.