Hiroshima University

Nihon Kohden Corporation

Jms Co., Ltd.

Masashi Kawamoto

Teiji Ukawa

Tsuneo Takayanagi

Toshio Tsuji

Masao Yoshizumi

Noboru Saeki

Yukihito Higashi

Haruka Morimoto

Ryuji Nakamura

Hideo Ozawa

Atsushi Kimura

Yuma Hayashi

Abdugheni Kutluk

Akinobu Kohno

Tetsuya Horiuchi

Takashi Kondo

Sachiko Otsuki

Kensuke Yanabe

Ryosuke Kubo

A blood pressure measuring apparatus includes a pressure control unit that controls an applied pressure applied to a region of a living body in which a vein and artery exist by a cuff mountable to the region, a detection unit that detects pressure waveforms in which pulse wave components from the region overlap with the applied pressure, and an analysis unit that obtains a respiratory variation on the waveform of artery and a venous pressure based on the pressure waveforms detected by the detection unit through one-time blood pressure measurement. The analysis unit obtains the respiratory variation on the waveform of artery based on data of a first pressure waveform in a first process, and the venous pressure based on data of a second pressure waveform in a second process and the data of the first pressure waveform.

Blood pressure measuring apparatus and blood pressure measuring method

A pulse wave analyzing apparatus comprises an acquiring section () which acquires a pulse wave that is non-invasively measured, and an analyzer () which calculates data on the frequency axis by using the pulse wave, and which obtains the index value of the respiratory-induced variation based on the calculated data on the frequency axis.

Pulse wave analyzing apparatus

Provided is a gas storing mask which, with a simple configuration, allows a reduction in feeling of discomfort given to a patient. An oxygen delivering mask () includes a first sheet () and a second sheet (), oxygen supplied from outside the oxygen delivering mask () being stored in a gas storing part () formed between the first sheet () and the second sheet ().

Gas storage mask

An apparatus for evaluating a vascular endothelial function, includes: a cuff pressure controlling unit configured to perform continuous pressure stimulation on a part of a body of a subject for a predetermined time, by using a cuff adapted to be wrapped around the part of the body of the subject; a cuff pressure detecting unit configured to detect a cuff pressure from an output of a pressure sensor connected to the cuff; a pulse wave detecting unit configured to detect a pulse wave from the output of the pressure sensor; and an analyzing unit configured to evaluate the vascular endothelial function by comparing vessel viscoelastic indexes which are obtained from the pulse wave detected in two of zones before, during, and after the pressure stimulation, and which exclude an amplitude of the pulse wave.

Apparatus for evaluating vascular endothelial function

An apparatus for evaluating a vascular endothelial function using a first cuff that occludes an artery of a patient, measuring pulse waves from pressure of a second cuff at a different position than the first cuff, and evaluating the vascular endothelial function using the pulse waves.

An apparatus for evaluating a vascular endothelial function includes: a cuff, to be wound around a part of a body of a subject; a cuff pressure controller, configured to control a pressure of the cuff, and configured to apply continuous pressure stimulation; a cuff pressure detector, configured to detect the pressure of the cuff from output of a pressure sensor connected to the cuff; a pulse wave detector, configured to detect, from the output of the pressure sensor, pulse waves before and after the continuous pressure stimulation is applied; and an analyzer, configured to evaluate the vascular endothelial function by comparing the pulse waves detected before and after the continuous pressure stimulation is applied.

Apparatus and method of evaluating vascular endothelial function

A vessel wall monitoring apparatus includes: a first detecting unit which detects vessel diameter information based on first biological information obtained from a subject; a first producing unit which differentiates the vessel diameter information detected by the first detecting unit, to produce a vessel diameter function; a second detecting unit which detects blood pressure based on second biological information obtained from the subject; a second producing unit which performs a logarithmic operation on the blood pressure detected by the second detecting unit, to produce a logarithmic blood pressure function; and an outputting unit which produces an impedance model expression by using the vessel diameter function, the logarithmic blood pressure function, and mechanical characteristic values including a stiffness, viscosity, and inertia, and which calculates and outputs at least one of the stiffness, the viscosity, and the inertia based on the impedance model expression.

Vessel wall monitoring apparatus

Growing community of inventors

Hiroshima, Japan

Masashi Kawamoto