Title:
HEMOMANOMETER
Document Type and Number:
Japanese Patent JP3727592
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a hemomanometer capable of continuously measuring the blood pressure.
SOLUTION: The highest blood pressure Po1 and the lowest blood pressure Po2 are calculated from the pressure pulse wave by a cuff 2 and a cuff pressure sensor 24, and a reference blood pressure area V0 is also calculated. Near infrared light is irradiated by a photoelectric sensor 7 and the quantity of the reflected light from a blood vessel is detected as the photoelectric volume pulse wave, and light of a wavelength shorter than blue light is irradiated by a body movement sensor 8 to detect the body movement of a subject. By subtracting the output waveform of the body movement sensor 8 from the output waveform of the photoelectric sensor 7, that is the photoelectric volume pulse wave, the body movement component is removed from the photoelectric pulse wave. After that, a data processing device 20 determines whether the cycle of the photoelectric volume pulse wave is within a permissible range or not, and the waveform data of an abnormal cycle part are replaced with a previously calculated standard waveform model. In this way, the blood pressure is calculated based on the pressure pulse wave and the photoelectric pulse wave from which the component leading to an error is removed.
Inventors:
Kondo Haruji
Toru Takemoto
Toshihiro Honda
Noriaki Sakakibara
Toru Takemoto
Toshihiro Honda
Noriaki Sakakibara
Application Number:
JP2002000856A
Publication Date:
December 14, 2005
Filing Date:
January 07, 2002
Export Citation:
Assignee:
K&S Co., Ltd.
Kyoho Manufacturing Co., Ltd.
Kyoho Manufacturing Co., Ltd.
International Classes:
A61B5/022; A61B5/145; A61B5/1455; (IPC1-7): A61B5/022
Domestic Patent References:
| JP9294728A | ||||
| JP60135029A | ||||
| JP2000041959A | ||||
| JP5184547A |
Foreign References:
| EP1317902A1 | ||||
| US20030109791 |
Attorney, Agent or Firm:
Arisa Ushiro