Abstract: A wrist sphygmomanometer includes an operation unit operable by a user. A manometer measures blood pressure. A detector detects the posture of the user. A storage stores an optimum posture for the user. A comparator compares the posture detected by the detector and the optimum posture stored beforehand in the storage to generate posture information. A communication unit communicates the posture information to the user. A setting unit sets the optimum posture in the storage. The storage includes a first storage section, which stores a fixed optimum posture corresponding to an unspecified user, and a second storage section, which stores a second optimum posture corresponding to a specified used. The setting unit stores the second posture based on a value detected by the detector as the second optimum posture in the second storage section in accordance with an operation of the operation unit.

Abstract: Contact pressure sensing apparatus for use with exercise equipment sensors are described. An example apparatus includes a sensor to detect a physiological condition of a user of an exercise device through physical contact with the user and a pressure sensor to detect a contact pressure applied by the user to the sensor.

Abstract: A phase line tilt calculating unit (actual measurement) receives phase characteristics Pa(f) and Pb(f) outputted from frequency conversion units, and calculates phase difference characteristics of actual measurement based on a phase difference on each frequency component between the phase characteristics. A phase line tilt calculating unit (model) calculates phase difference characteristics between a transfer function Ga(f) and a transfer function Gb(f) calculated by a transfer function calculating unit, and outputs the calculated phase difference characteristics to a search unit. The search unit fits a variable k and determines a variable kopt (optimum solution) in which a tilt g(k) and a tilt gexp substantially match each other. The variable kopt is an index indicating a degree of arterial sclerosis of a subject.

Abstract: The present disclosure relates, in some embodiments, to devices, systems, and/or methods for collecting, processing, and/or displaying stroke volume and/or cardiac output data. For example, a device for assessing changes in cardiac output and/or stroke volume of a subject receiving airway support may comprise a processor; an airway sensor in communication with the processor, wherein the airway sensor is configured and arranged to sense pressure in the subject's airway, lungs, and/or intrapleural space over time; a blood volume sensor in communication with the processor, wherein the blood volume sensor is configured and arranged to sense pulsatile volume of blood in a tissue of the subject over time; and a display configured and arranged to display a representative of an airway pressure, a pulsatile blood volume, a photoplethysmogram, a photoplethysmogram ratio, the determined cardiac output and/or stroke volume, or combinations thereof.

Abstract: Implantable self-calibrating biosensor Subcutaneously or intracorporeally implantable biosensor, characterized by a closed microfluidic circuit with calibrating fluids, which communicates by a backward micro-dialysis logic with the exterior of said circuit, an open and in contact with the tissues and the interstitial fluid working electrode, for its self-calibration. One or more working electrodes may be positioned inside openable boxes from EAP, and be opened for the duration of the measurement and closed immediately after, succeeding one another in the measurement, as their sensitivity is diminished.

Abstract: The present invention relates to a brain dysfunction and seizure detector monitor and system, and a method of detecting brain dysfunction and/or seizure of a subject. The various embodiments of the system of the present invention were developed for the brain activity and preferably EEG monitoring of a single patient or multiple patients. Preferably, the system or monitor of the present invention also includes one or more seizure detection algorithms. The analysis method is specifically optimized to amplify abnormal brain activity and minimize normal background activity. This analysis yields a seizure index whose value is directly related to the current presence of ictal activity in the signal. In addition, a seizure probability index based on historical values of the aforementioned seizure index, is derived for diagnostic purposes. The seizure probability index quantifies the probability that the patient has exhibited abnormal brain activity since the beginning of the recording.

Abstract: Methods and apparatus for determining a cardiac parameter from cardiovascular pressure signals including arterial blood pressure (ABP) and the photoplethysmographic signal to quantify the degree of amplitude modulation due to respiration and predict fluid responsiveness are disclosed. Disclosed embodiments include a method for assessing fluid responsiveness implemented in a digital computer with one or more processors comprising: (a) measuring a cardiovascular signal, and (b) computing a dynamic index predictive of fluid responsiveness from said cardiovascular signal using a nonlinear state space estimator. According to one particular embodiment, and without limitation, the nonlinear state space estimator is based on a model for cardiovascular signals such as arterial blood pressure or plethysmogram signals, and employs a marginalized particle filter to estimate a dynamic index predictive of fluid responsiveness that is substantially equivalent to a variation in pulse pressure of said cardiovascular signal.

Abstract: An implantable neurostimulator device for implantation in a head of a patient includes a housing adapted to be implanted beneath a patient's scalp, and a cardiac monitoring element, a brain monitoring element, and a processor. The processor is configured to receive a cardiac signal from the cardiac monitoring element, identify cardiac events in the cardiac signal, receive a brain signal from the brain monitoring element, identify neurological events in the brain signal, and indicate a relationship between the neurological events and the cardiac events.

Abstract: An exemplary embodiment providing one or more improvements includes a blood oxygen sensing apparatus and method in which an infra-red light is absorbed blood in portions that are related to levels of oxygen in the blood along a path.

Abstract: A vital sign measurement device includes a sensor fixation device, an optical sensing system, and an output unit. The sensor fixation device is adapted to be placed against an anatomical location of a subject, within which is an artery. The optical sensing system includes an optical source, an optical refractor, and an optical detector, all of which are held by the sensor fixation device and move with movement of the sensor fixation device. The optical sensing system is positioned with respect to the sensor fixation device to sense movement corresponding to an arterial pulse when the sensor fixation device is placed against the anatomical location of the subject. The optical sensing system can sense an arterial pulse from the movement, bending, or compression of at least one portion of the optical sensing system relative to other portions of the optical sensing system resulting in a change in an optical signal received by the optical detector.

Abstract: A vital sign measurement device includes a sensor fixation device, an optical sensing system, and an output unit. The sensor fixation device is adapted to be placed against an anatomical location of a subject, within which is an artery. The optical sensing system includes an optical source device and an optical detector, both of which are held by the sensor fixation device and move with movement of the sensor fixation device. The optical source device is configured to produce a speckle pattern output. The optical detector is positioned to detect at least a portion of the speckle pattern output and generate therefrom the detected portion of the speckle pattern output. The optical sensing system can sense an arterial pulse from the movement, bending, or compression of at least one portion of the optical sensing system relative to other portions of the optical sensing system resulting in a change in the optical signal received within the detected portion of the speckle pattern output.

Abstract: Disclosed herein is a system for diagnosing a deficient pulse and an forceful pulse. The system includes a pulse diagnotic device, a deficient pulse and forceful pulse determining device, and an output device. The pulse diagnotic device measures pulse condition information at an examinee's Cun (˜\f˜) Gu (H), and Chi (,R) pulse-taking locations on his or her wrist using one or more pulse-taking sensors. The deficient pulse and forceful pulse determining device is operably connected to the pulse diagnotic device, analyzes the pulse pressure information measured by the pulse diagnotic device, calculates a quantified deficiency/forceful coefficient, and determines whether a pulse of interest is a deficient pulse or an forceful pulse. The output device is connected to the determining device and displays results of the determination.

Abstract: A blood pressure measurement bladder (50) has a predetermined amount of air introduced and sealed therein. A CPU (30) measures in advance the P-V property. The blood pressure measurement bladder (50) is wrapped around a measurement site. By exerting pressure from the outer side to the blood pressure measurement bladder (50), the internal pressure in the blood pressure measurement bladder (50) is increased to exert pressure on the blood vessel. During this process, the cuff pressure in the blood pressure measurement bladder (50) generated by volumetric change of the blood vessel by changing the pressure exerted from the outer side to the blood pressure measurement bladder (50), and the pressure pulse wave data are detected. By adding the cuff compliance property obtained by the P-V property that was measured in advance to the detected data as a correction value of the pressure pulse wave, blood pressure is calculated.

Abstract: An option which is considered to be desired by a user is determined by using an electroencephalogram interface (IF), and a determination error for the option is detected based on an electroencephalogram. If a determination error is detected, the option is corrected based on the electroencephalogram information which was used for the option determination. A correction apparatus to be incorporated in an electroencephalogram IF system is provided. The electroencephalogram IF system includes a biological signal measurement section, an analysis section for analyzing an event-related potential contained in an electroencephalogram signal of a user, an inference section for inferring an option desired by the user based on a result of analysis, and an output section for presenting the option inferred by the inference section to the user. The biological signal measurement section measures the electroencephalogram signal of the user based on a point of presenting the option to the user as a starting point.

Abstract: A blood pressure measuring apparatus controls a winding mechanism in parallel with increase or decrease of a pressure of a measuring fluid bladder after the measuring fluid bladder is wound around a measurement region. Therefore, a change in a winding state of the measuring fluid bladder is prevented. Additionally, measurement accuracy is improved by keeping compliance of the measuring fluid bladder constant.

Abstract: An apparatus for detecting vital functions has a pulse wave sensor attachable to a body and a control unit. The control unit checks if amplitude of pulse wave signals produced from the pulse wave sensor varies. The control unit further checks if a large change in the amplitude during a systolic phase of a pulse wave corresponding to the systolic phase of the heart. If a first large change in the amplitude during a diastolic phase of a pulse wave corresponding to the diastolic phase of the heart, it is highly probable that a motion artifact has occurred. Therefore, a motion artifact flag is set. Next, it is checked if the amplitude in the next diastole is changing by more than 30%. if it is presumed that the occurrence of cough is highly probable, a cough flag is set. if it is neither the motion artifact nor the cough, then a yawn flag is set.

Abstract: The electric-powered air release valve comprises a nozzle, a fixed iron core; an excitation coil; a movable iron plate; a leaf spring: a rubber valve; and a yoke; wherein a circular hole capable of accommodating a circular column part at one end of the fixed iron core when the movable iron plate is moved toward the nozzle is formed in the movable iron plate; and a magnetic gap is maintained between an internal periphery of the circular hole and an external periphery of the circular column part at one end of the fixed iron core.

Abstract: Embodiments of the present invention provide methods, apparatuses, and systems associated with detecting, analyzing, and/or displaying historical glucose levels and/or trends in a body.

Abstract: A method for estimating systolic and diastolic pressure is disclosed herein. The method includes obtaining a predetermined type of blood pressure data from a patient, and providing previously acquired blood pressure data obtained from a plurality of different subjects. The method also includes implementing the previously acquired blood pressure data to select systolic and diastolic amplitude ratios that most closely correlate with the predetermined type of blood pressure data obtained from the patient. The selected systolic and diastolic amplitude ratios are adapted to compensate for the effects of arterial compliance. The method also includes implementing the selected systolic and diastolic amplitude ratios to generate a systolic and diastolic blood pressure estimates.

Abstract: A method and device for recording data on a recording medium, includes storing, in a memory, image data in frame units; comparing a stored image frame with a subsequent image frame following the stored image frame; and recording, on a recording medium, the subsequent image frame based on a result of the comparison. A method and device for reproducing data recorded on a recording medium, includes receiving a channel selection signal; reproducing image data recorded on a recording medium based on the channel selection signal; determining whether the image data corresponds to predictive-picture (P-picture) data; and generating a full screen image signal based on the image data if the image data does not correspond to P-picture data, or generating a full screen image signal based on intra-picture (I-picture) data corresponding to the image data if the image data corresponds to P-picture data.