Nihon Kohden Corporation

Hideki Fujisaki

Kazumasa Ito

Yoshinori Ueda

Teiji Ukawa

Naoki Kobayashi

Kumi Sugiyama

Toru Maeda

Masahiro Takeuchi

Tetsuo Suzuki

Nobuyoshi Watanabe

Noriaki Todokoro

Keiichi Sugiura

Takahiro Abe

Tomomi Murozono

Jiongxun Chen

Makiko Fumoto

A reusable portion includes a first connector and a light emitter. A disposable portion includes a support, a second connector and a light detector. The support has a translucent portion and adapted to be attached on a body of a subject. The second connector is supported by the support and configured to couple with the first connector. The light detector is supported by the support and configured to output a signal corresponding to an amount of light incident on the light detector. Under a condition that the first connector and the second connector are coupled, the light emitter is disposed so as to face the translucent portion, so that the first connector is enabled to detect the signal via the second connector.

Medical sensor, reusable portion of medical sensor, and disposable portion of medical sensor

A medical photometer includes a signal producing section that produces a first control signal to emit a first light having a first wavelength, a second control signal to emit a second light having a second wavelength, a third control signal to emit a third light having a third wavelength, and a fourth control signal to emit a fourth light having a fourth wavelength, a signal acquiring section that acquires a first to fourth intensity signals, a processor, and a memory that stores instructions. In the medical photometer, the first wavelength and the second wavelength are selected as two wavelengths at each of which an extinction coefficient of blood is a first value. The third wavelength and the fourth wavelength are selected as two wavelengths at each of which the extinction coefficient of the blood is a second value which is different from the first value.

Medical photometer and medical photometry system

A vital sign information sensor for acquiring vital sign information from a physiological tissue of a subject includes: a sensor element configured to acquire the vital sign information from the subject; and a memory storing URI information. The URI information is capable of gaining access to an electronic content provided by a WEB server disposed on a communication network. When the vital sign information sensor is communicably connected to a vital sign information display apparatus, the URI information is transmitted from the memory to the vital sign information display apparatus. The electronic content includes information relevant to the vital sign information sensor.

Vital sign information sensor and vital sign information display system

A vital sign information processing system includes a sensor configured to be attached to a living body, and an information acquisition apparatus configured to acquire vital sign information of the living body through the sensor. A first memory is disposed in the sensor and stores first site information indicative of a site at which the sensor is to be used. A second memory is disposed in the information acquisition apparatus and stores second site information indicative of a site at which the information acquisition apparatus is to be used. A processor disposed in the information acquisition apparatus causes the information acquisition apparatus to perform notification when the first site information and the second site information are not matched.

Sensor and vital sign information processing system

A sensor includes a probe that acquires a blood light absorber concentration in a subject and a cuff that acquires a non-invasive blood pressure of the subject. In the sensor, the probe is configured to be attached to a first portion of a digit of the subject, and the cuff is configured to be attached to a second portion of the digit, the second portion being located on a periphery side with respect to the first portion.

Sensor

A physiological information display device includes: In the device, the numerical value contains a first digit and a second digit, the first digit is always displayed in a first size and in a first area of the display, the number of significant digits is changed depending on whether the second digit is displayed in a second size and in a second area of the display or is not displayed, the second size being smaller than the first size, and a position and size of the first area are not changed even when the second digit is displayed.

Physiological information display device, and physiological information output method

A medical photometer includes a processor and a memory that stores an instruction readable by a computer. When the instruction is executed by the processor, the medical photometer acquires an intensity of one of a first intensity signal and a second intensity signal, the first intensity signal corresponding to an intensity of a first light beam that has a first wavelength and that is transmitted through or reflected from a tissue of a living body, and a second intensity signal corresponding to an intensity of a second light beam that has a second wavelength and that is transmitted through or reflected from the tissue of the living body acquires an intensity ratio of the first intensity signal and the second intensity signal, and detects an artifact of the living body based on the acquired intensity and the acquired intensity ratio.

Medical photometer and medical photometer control method

A medical photometer includes a processor and a memory that stores an instruction readable by a computer. When the instruction is executed by the processor, the medical photometer acquires a first light attenuation of a first light beam that is transmitted through or reflected from a tissue of a living body, and that has a first wavelength, based on a first intensity signal corresponding to an intensity of the first light beam, acquires a second light attenuation of a second light beam that is transmitted through or reflected from the tissue, and that has a second wavelength, based on a second intensity signal corresponding to an intensity of the second light beam, calculates a tissue thickness based on a ratio of the first light attenuation and the second light attenuation, and detects an artifact of the living body based on a temporal variation of the tissue thickness.

A pulse photometer includes a light emitter, a light detector, a first signal separator that separates a first signal component and a first noise component, a second signal separator that separates a second signal component and a second noise component, a first determining section, a second determining section, and a concentration calculating section that calculates a concentration of a light absorption material in blood of the subject based on a fundamental frequency of the first signal component or a fundamental frequency of the second signal component.

Pulse photometer

A pulse photometer includes: a first variation acquirer acquiring a first variation corresponding to a light attenuation variation of a first light beam due to pulsation of blood in a subject based on a first intensity signal corresponding to an intensity of the first light beam transmitted through or reflected from a body of the subject and having a first wavelength; a second variation acquirer acquiring a second variation; a third variation acquirer acquiring a third variation; a concentration calculator calculating a blood light absorber concentration based on the first variation and the second variation; an estimated value calculator calculating an estimated value of the third variation based on the first variation and the second variation; and an evaluator evaluating reliability of a calculated value of the blood light absorber concentration based on the third variation and the estimated value.

Pulse photometer and method for evaluating reliability of calculated value of blood light absorber concentration

A pulse photometer includes: a first variation acquirer acquiring a first variation corresponding to a light attenuation variation of a first light beam due to pulsation of blood in a subject, based on a first intensity signal corresponding to an intensity of the first light beam that is transmitted through or reflected from a body of the subject, and that has a first wavelength; a second variation acquirer acquiring a second variation; and a concentration calculator calculating a blood light absorber concentration, based on the first and second variations, the second variation containing a first offset which is based on an inverse of the light attenuation variation of the first light beam.

Pulse photometer and method for calculating concentration of light absorber in blood

A probe which is to be attached to a finger of a subject to acquire physiological parameter of the subject includes a light emitter that emits a light beam toward the finger, a light detector that outputs a signal corresponding to a light beam that is transmitted through or reflected from the finger, a first holding face that has a portion which is faced with a nail of the finger and another portion which is faced with a side face of the finger, and a second holding face that has a portion which is faced with a pad of the finger and another portion which is faced with the side face of the finger. In a state where the probe is attached to the finger, the first holding face and the second holding face are placed to be continuous to each other.

Probe

A medical photometer includes a processor and a memory that stores an instruction readable by a computer. When the instruction is executed by the processor, the medical photometer acquires a first light attenuation of a first light beam that is transmitted through or reflected from a tissue of a living body, and that has a first wavelength, based on a first intensity signal corresponding to an intensity of the first light beam, acquires a second light attenuation of a second light beam that is transmitted through or reflected from the tissue, and that has a second wavelength, based on a second intensity signal corresponding to an intensity of the second light beam, and calculates a light absorber amount that is an amount of a first light absorber in the tissue, based on a ratio of the first light attenuation and the second light attenuation.

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Tokyo, Japan

Hideki Fujisaki