Colin Corporation

Colin Medical Technology Corporation

Takashi Nomura

Toshihiko Ogura

Tohru Oka

Hidekatsu Inukai

Hiroshi Sakai

Tomoko Ikawa

Hideichi Tsuda

Chikao Harada

Hideto Tsuchida

Satoshi Koike

Takeshi Kuroshaki

Setsuo Takatani

Douglas W Blakely

Keizo Kawaguchi

An apparatus for measuring a velocity at which a pulse wave propagates between a first portion and a second portion of a living subject, the apparatus including a propagation-signal producing device which is adapted to be worn on the first portion of the subject and produces a propagation signal, a propagation-signal detecting device which is adapted to be worn on the second portion of the subject and detects the propagation signal that has been produced by the propagation-signal producing device, has propagated through a body tissue of the subject, and has reached the second portion, a blood-vessel-length determining device for determining a length of a blood vessel of the subject that is located between the first and second portions of the subject, based on a signal propagation time from a time when the propagation signal is produced by the propagation-signal producing device, to a time when the propagation signal is detected by the propagation-signal detecting device, and a pre-stored velocity at which the propagation signal propagates through a body tissue of a human person, and a pulse-wave-propagation-velocity determining device for determining the velocity at which the pulse wave propagates between the first and second portions of the subject, based on the length of the blood vessel determined by the blood-vessel-length determining device.

Pulse-wave-propagation-velocity measuring apparatus

An apparatus for measuring an inferior-and-superior-limb blood-pressure index of a living subject, including an inferior-limb blood-pressure measuring device which measures an inferior-limb blood pressure of an inferior limb of the subject, a superior-limb blood-pressure measuring device which measures a superior-limb blood pressure of a superior limb of the subject, an inferior-and-superior-limb blood-pressure index determining device for determining the inferior-and-superior-limb blood-pressure index based on the inferior-limb blood pressure measured by the inferior-limb blood-pressure measuring device and the superior-limb blood pressure measured by the superior-limb blood-pressure measuring device, a heartbeat-synchronous-signal detecting device which detects a heartbeat-synchronous signal that is produced from the subject, a pulse-period-related-information obtaining device for obtaining, based on the heartbeat-synchronous signal detected by the heartbeat-synchronous-signal detecting device, pulse-period-related information that is related to a pulse period of the subject, and a neuropathy-related-information obtaining device for obtaining, based on the pulse-period-related information obtained by the pulse-period-related-information obtaining device, neuropathy-related information that is related to diabetic neuropathy.

Inferior-and-superior-limb blood-pressure index measuring apparatus

An apparatus for measuring a propagation velocity of a pulse wave which is propagated through an artery of a living subject, the apparatus including an electrocardiographic-waveform detecting device which detects an electrocardiographic waveform from the subject, a pulse-wave sensor which is adapted to be worn on the subject and which detects the pulse wave from the subject, a time-difference determining device for determining a time difference between a first periodic point relating to the detected electrocardiographic waveform and a second periodic point relating to the detected pulse wave, and a propagation-velocity determining means for determining the propagation velocity of the pulse wave based on the determined time difference.

Apparatus for measuring pulse-wave propagation velocity

An apparatus for evaluating a degree of recovery of a living subject from a surgical operation which the subject has undergone, the apparatus including a circulatory-organ-relating-information obtaining device for iteratively obtaining, after the operation, a piece of circulatory-organ-relating information relating to a circulatory organ of the subject, and a recovery-degree evaluating device for evaluating the degree of recovery of the subject, based on at least one piece of circulatory-organ-relating information obtained by the circulatory-organ-relating-information obtaining device.

Postoperative-condition evaluating apparatus

A substitute-heart control apparatus for controlling a substitute heart provided in a living body, including an information obtaining device which non-invasively obtains, from the living body, physical information relating to blood circulation in the living body, and a control device which supplies, to the substitute heart, a control signal to control a cardiac output that is a volume of blood outputted from the substitute heart per unit time, based on the physical information obtained by the information obtaining device, according to a predetermined relationship between cardiac output and physical information.

Substitute-heart control apparatus

From a fluctuation of pulse periods of a subject continuously measured by a pulse period measuring device, a first pulse period fluctuation signal HFC.sub.RR which corresponds to a first pulse period fluctuation component produced in substantial synchronism with a respiration of the subject and a second pulse period fluctuation signal LFC.sub.RR which corresponds to a second pulse period fluctuation component having a predetermined frequency lower than a frequency of the first pulse period fluctuation component are extracted by a pulse period fluctuation signal extracting means. Then, based on a ratio (HFC.sub.RR /LFC.sub.RR) of the first pulse period fluctuation signal HFC.sub.RR to the second pulse period fluctuation signal LFC.sub.RR, an anesthetic depth of the subject is calculated by an anesthetic depth calculating means. Thus, the present apparatus can objectively or quantitatively calculate the anesthetic depth of the subject. Additionally, the apparatus can accurately measure the anesthetic depth of the subject without needing operator's skill or the like.

Anesthetic depth measuring apparatus

An apparatus for measuring a propagation velocity of a pulse wave which is propagated through an artery of a living subject, includes an electrocardiographic-waveform detecting device which detects an electrocardiographic waveform from the subject, a pulse-wave sensor which is adapted to be worn on the subject and which detects the pulse wave from the subject, a time-difference determining device for determining a time difference between a first periodic point relating to the detected electrocardiographic waveform and a second periodic point relating to the detected pulse wave, and a propagation-velocity determining device for determining the propagation velocity of the pulse wave based on the determined time difference.

A physical-information collecting system for collecting physical information of living subjects, including a registering device which registers sets of identification data each of which identifies a corresponding one of the living subjects; a card reading device into which a personal card having a set of identification data is inserted by a living subject, the card reading device reading the set of identification data from the personal card inserted therein; an identifying device which identifies whether the set of identification data read by the card reading device is same as one of the sets of identification data registered in the registering device; a measuring device which obtains physical information from the living subject who has inserted the personal card into the card reading device; a first memory device which stores, each time the measuring device obtains physical information from the living subject, the obtained physical information of the living subject, subject to a positive identification of the identifying device that the set of identification data read by the card reading device is same as one of the sets of identification data registered in the registering device; and an output device which outputs, subject to the positive identification of the identifying device, the physical information of the living subject accumulatively stored in the first memory device.

Physical information collection system

An inflatable cuff for pressing a body portion of a living subject by being wound and inflated around the body portion, in measuring a blood pressure of the subject, the cuff having (a) a first group of graduations provided on a major surface of the cuff, the major surface being adapted to be visible when the cuff is wound around the body portion of the subject, so that the first group of graduations are used for measuring a circumferential length of the body portion; and (b) a second group of graduations provided on the major surface of the cuff, the graduations of the second group corresponding to the graduations of the first group, respectively, so that the cuff wound around the body portion of the subject is fixed at one of the graduations of the second group which corresponds to one of the graduations of the first group which indicates the measured circumferential length of the body portion.

Growing community of inventors

Komaki, Japan

Takashi Nomura