Abstract: A light emitter and a light receiver are provided at a side surface of a lever. When a user grips the lever with his hand, the light emitter and the light receiver are positioned close to bases of the middle finger, a ring finger, and a little finger, as a measurement portion of a palm. A blood-flow blockage reducing component protrudes to contact a portion between the index finger and the middle finger, and a thumb, as a contact portion of the palm.

Abstract: A biosensor includes light emitting elements and a light receiving element disposed on a principal surface of a wiring board; a light shielding portion disposed between a light-emitting-element sealing portion and a light-receiving-element sealing portion; a base medium having light transmitting properties, disposed in parallel with the wiring board with the light shielding portion therebetween; an adhesion layer having light transmitting properties, configured to bond the base medium with the light-emitting-element sealing portion, the light-receiving-element sealing portion, and the light shielding portion; and a first electrocardiograph electrode attached to a principal surface of the base medium. The refractive index of the base medium is set to be higher than that of the adhesion layer, and a surface of the first electrocardiograph electrode which is adjacent to the base medium is roughened so that stray light passing through the base medium will be scattered.

Abstract: A pulse wave transit time measurement device includes a pulse wave transit time calculator that calculates a pulse wave transit time based on a peak time difference between an electrocardiographic signal and a pulse wave signal, a posture classifier that classifies time serial data of the pulse wave transit time based on a posture detected by an acceleration sensor, and a fluctuation identifier that sets a reference posture from among classified postures, corrects, in conformity with the reference posture, the time serial data of the pulse wave transit time classified into the posture different from the reference posture, and determines fluctuations in the pulse wave transit time based on the time serial data of the pulse wave transit time in the reference posture and the time serial data of the pulse wave transit time having being corrected.

Abstract: A pulse wave transit time measurement device includes a neck band, a pair of electrocardiographic electrodes detecting an electrocardiographic signal, a photoplethysmographic sensor detecting a pulse wave signal, and a pulse wave transit time calculator calculating a pulse wave transit time based on a peak time difference between the electrocardiographic signal detected by the electrocardiographic electrodes and the pulse wave signal detected by the photoplethysmographic sensor. The photoplethysmographic sensor is positioned in or substantially in a central region of the neck band at a location at which the photoplethysmographic sensor is in contact with a neck of a user at or near a midline of the neck on the backside when the neck band is worn around the neck of the user.

Abstract: A biological state estimating apparatus includes a pair of electrocardiographic electrodes, a photoplethysmographic sensor, and a controller that includes a peak detecting section, a pulse transmission time measuring section, a correlation information storing section, and a biological state estimating section. The electrocardiographic electrodes detect an electrocardiogram signal and the photoplethysmographic sensor, which has light-emitting and light-receiving elements, detects a photoplethysmogram signal. The controller detects peaks of the electrocardiogram and photoplethysmogram signals and determines a pulse transmission time from the time difference between the respective peaks of the photoplethysmogram and the electrocardiogram signal. Memory stores information determined in advance based on the relationship between pulse transmission time and biological state.

Abstract: An optical sensor device includes a light emitter for emitting, to a living body, lights having two wavelengths and blinking at a predetermined frequency, and a light receiver for receiving the lights from the living body. The light receiver outputs first and second detection signals corresponding to the respective wavelengths. A filter circuit extracts, from the first and second detection signals, modulation signals that are obtained with amplitude modulation of signals of the predetermined frequency. The modulation signals are amplified by a post-amplifier and are taken into an arithmetic processing unit after being converted to digital signals by an AD converter. The arithmetic processing unit calculates DC components and AC components of the first and second detection signals by employing the modulation signals converted the digital signals.

Abstract: A handheld electrocardiographic measurement device includes a substantially spheroidal body, a stopper projecting along an axial direction of the body to restrict a position of a thumb of one hand by abutting on a side surface of the thumb when a user grips the body with the one hand, a plate-shaped flange projecting from a side surface of the body in a direction orthogonal or substantially orthogonal to a projecting direction of the stopper, a first electrocardiographic electrode disposed on a back side of the body to touch a finger of the one hand when the body is gripped with the one hand, and a second electrocardiographic electrode disposed on a surface of the flange to touch a finger of the other hand when the flange is pinched by the other hand.

Abstract: A biosensor including light emitting elements and a light receiving element disposed on a principal surface of a wiring board; a light shielding portion disposed between a light-emitting-element sealing portion and a light-receiving-element sealing portion; a base medium having light transmitting properties, disposed in parallel with the wiring board with the light shielding portion therebetween; an adhesion layer having light transmitting properties that bonds the base medium with the light-emitting-element sealing portion, the light-receiving-element sealing portion, and the light shielding portion; and a first electrocardiograph electrode attached to a principal surface of the base medium. Both end portions of the adhesion layer and both end portions of the base medium are disposed such that they overlap neither of the light-receiving-element sealing portion nor the light-emitting-element sealing portion when viewed from a direction normal to the principal surface of the wiring board.

Abstract: A smart phone includes photoelectric pulse wave sensing units that obtain photoelectric pulse wave signals from hands holding the smart phone, a touch screen on which a plurality of operation switches that accept operations performed by thumbs are displayed, and a switch arrangement changing unit that changes the arrangement of the displayed plurality of operation switches. The switch arrangement changing unit, when photoelectric pulse wave signals are obtained by the photoelectric pulse wave sensing units, changes the arrangement of the operation switches displayed on the touch screen in such a manner that the operation switches are arranged along a circular arc of a virtual circle whose center is located at a carpometacarpal joint of the thumb of a right hand performing operations and whose radius is the distance from the carpometacarpal joint to the tip of the thumb.

Abstract: A biosensor including light emitting elements and a light receiving element disposed on a principal surface of a wiring board; a light shielding portion disposed between a light-emitting-element sealing portion and a light-receiving-element sealing portion; a base medium having light transmitting properties, disposed in parallel with the wiring board with the light shielding portion therebetween; an adhesion layer having light transmitting properties that bonds the base medium with the light-emitting-element sealing portion, the light-receiving-element sealing portion, and the light shielding portion; and a first electrocardiograph electrode attached to a principal surface of the base medium. Both end portions of the adhesion layer and both end portions of the base medium are disposed such that they overlap neither of the light-receiving-element sealing portion nor the light-emitting-element sealing portion when viewed from a direction normal to the principal surface of the wiring board.

Abstract: A biological signal detection apparatus includes a neck band worn by a user along a circumferential direction of a neck of the user and a pair of sensors mounted to both ends of the neck band to detect a biological signal. Each sensor includes a conductive cloth with a planar or substantially planar shape, a main body on which the conductive cloth is set, a frame body that holds a periphery of the conductive cloth between the main body and the frame body, and an input terminal provided on a surface of the main body that opposes the frame body.

Abstract: A pulse transmission time measuring apparatus includes a first photoplethysmographic sensor that includes a first light emitter and a first light receiver and detects a first photoplethysmographic signal, and a second photoplethysmographic sensor that includes a second light emitter and a second light receiver and detects a second photoplethysmographic signal. The first and second photoplethysmographic sensors are disposed on a contact surface that comes into contact with the body when the pulse transmission time measuring apparatus is attached to the body. The spacing between the second light emitter and the second light receiver is smaller than the spacing between the first light emitter and the first light receiver. The second photoplethysmographic sensor detects the second photoplethysmographic signal corresponding to the flow of blood in the capillaries.

Abstract: A sleep support apparatus includes a pair of electrocardiographic electrodes that detect an electrocardiographic signal, a photoelectric pulse wave sensor that includes a light emitter and a light receiver and that detects a photoelectric pulse wave signal, peak detectors that respectively detect the peaks of the electrocardiographic signal and the photoelectric pulse wave signal, a pulse wave transit time clock that obtains a pulse wave transit time from a time difference between the peak of the photoelectric pulse wave signal and the peak of the electrocardiographic signal, a sleep state detector that determines that a user's body has not reached a state suitable for sleep when the pulse wave transit time is less than or equal to a certain threshold, and a forearm heater that increases a temperature of a forearm when it is determined the user's body has not reached a state suitable for sleep.

Abstract: A pulse wave propagation time measurement device including a first signal processor section that filters an electrocardiographic signal detected by an electrocardiographic sensor, a second signal processor section that filters a photoelectric pulse wave signal detected by a photoelectric pulse wave sensor, peak detectors respectively that detect peaks of the electrocardiographic signal and the photoelectric pulse wave signal, delay time obtaining sections respectively that obtain a delay time of the electrocardiographic signal and of the photoelectric pulse wave signal, peak correctors respectively that correct the peaks of the electrocardiographic signal and the photoelectric pulse wave signal based on the delay time of the electrocardiographic signal and the photoelectric pulse wave signal, and a pulse wave propagation time measurement section that obtains a pulse wave propagation time from a time difference between the corrected peaks of the electrocardiographic signal and the photoelectric pulse wave sign

Abstract: A biosensor includes light emitting elements and a light receiving element disposed on a principal surface of a wiring board; a light shielding portion disposed between a light-emitting-element sealing portion and a light-receiving-element sealing portion; a base medium having light transmitting properties, disposed in parallel with the wiring board with the light shielding portion therebetween; an adhesion layer having light transmitting properties, configured to bond the base medium with the light-emitting-element sealing portion, the light-receiving-element sealing portion, and the light shielding portion; and a first electrocardiograph electrode attached to a principal surface of the base medium. The refractive index of the base medium is set to be higher than that of the adhesion layer, and a surface of the first electrocardiograph electrode which is adjacent to the base medium is roughened so that stray light passing through the base medium will be scattered.

Abstract: A biosensor includes light emitting elements and a light receiving element disposed on a principal surface of a wiring board; a light shielding portion disposed between a light-emitting-element sealing portion and a light-receiving-element sealing portion; a base medium having light transmitting properties, disposed in parallel with the wiring board with the light shielding portion therebetween; an adhesion layer having light transmitting properties, configured to bond the base medium with the light-emitting-element sealing portion, the light-receiving-element sealing portion, and the light shielding portion; and a first electrocardiograph electrode attached to a principal surface of the base medium. The refractive index of the base medium is set to be higher than that of the adhesion layer, and a surface of the first electrocardiograph electrode which is adjacent to the base medium is roughened so that stray light passing through the base medium will be scattered.

Abstract: An optical sensor device includes a light emitter for emitting, to a living body, lights having two wavelengths and blinking at a predetermined frequency, and a light receiver for receiving the lights from the living body. The light receiver outputs first and second detection signals corresponding to the respective wavelengths. A filter circuit extracts, from the first and second detection signals, modulation signals that are obtained with amplitude modulation of signals of the predetermined frequency. The modulation signals are amplified by a post-amplifier and are taken into an arithmetic processing unit after being converted to digital signals by an AD converter. The arithmetic processing unit calculates DC components and AC components of the first and second detection signals by employing the modulation signals converted the digital signals.

Abstract: The occurrence of trunk muscle contraction associated with body movement and the like is accurately and timely detected using pulse data. A trunk muscle contraction detection apparatus includes a change-component acquisition unit that extracts change-component data representing a change component of pulse-interval data, the change component regarding pulse intervals, a vibration-component removing unit that generates vibration-component removal data by removing, from the change-component data, a vibration component corresponding to periodic vibrations in the pulse-interval data, and a variation-component extraction unit that extracts a certain variation component from the vibration-component removal data, and determines the occurrence of trunk muscle contraction in accordance with the certain variation component, which has been extracted.

Abstract: An optical sensor device includes a light emitter for emitting, to a living body, lights having two wavelengths and blinking at a predetermined frequency, and a light receiver for receiving the lights from the living body. The light receiver outputs first and second detection signals corresponding to the respective wavelengths. A filter circuit extracts, from the first and second detection signals, modulation signals that are obtained with amplitude modulation of signals of the predetermined frequency. The modulation signals are amplified by a post-amplifier and are taken into an arithmetic processing unit after being converted to digital signals by an AD converter. The arithmetic processing unit calculates DC components and AC components of the first and second detection signals by employing the modulation signals converted the digital signals.

Abstract: A biological state estimating apparatus includes a pair of electrocardiographic electrodes, a photoplethysmographic sensor, and a controller that includes a peak detecting section, a pulse transmission time measuring section, a correlation information storing section, and a biological state estimating section. The electrocardiographic electrodes detect an electrocardiogram signal and the photoplethysmographic sensor, which has light-emitting and light-receiving elements, detects a photoplethysmogram signal. The controller detects peaks of the electrocardiogram and photoplethysmogram signals and determines a pulse transmission time from the time difference between the respective peaks of the photoplethysmogram and the electrocardiogram signal. Memory stores information determined in advance based on the relationship between pulse transmission time and biological state.