Blood pressure measuring device and blood pressure measuring method

• Main Author: HABU YOSHIYUKI,HAGI KOUJI,OZAWA HITOSHI,AIHARA KIMIHISA,TATARA NAOE,MINO SHINJI,KOIZUMI HIROSHI
• Format: Patent
• Language: English
• Published: 12.09.2007
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

To provide a technique which makes it possible to obtain a proper pulse wave signal for high-accuracy blood pressure measurements, thereby saving the trouble of taking measurements repeatedly and reducing a physical burden imposed on the user by cuff pressure. A blood pressure measuring apparatus includes a cuff which is attached to and around an external ear; a first pulse wave detector and a second pulse wave detector which detect a pulse wave in a part squeezed by the cuff and which are affected differently from each other by a characteristic of body movements; a body movement detecting means which detects the characteristic of body movements; a pulse wave selecting means which selects a pulse wave detected by one of the first pulse wave detector and the second pulse wave detector based on the characteristic of body movements detected by the body movement detecting means; and a blood pressure value deriving means which derives a blood pressure value based on the pulse wave selected by the pulse wave selecting means.A blood pressure measuring technique enabling acquisition of a pulse signal adequate for high-accuracy blood pressure measurement and reducing the troublesomeness of remeasurement and the physical load on the user due to the cuff pressure. A blood pressure measuring device comprises a cuff installed on an auricle and its peripheral part, a first and second pulse detectors which detect pulses at the portion pressed by the cuff which are influenced differently by the feature of a body movement, body movement detecting means for detecting the feature of the body movement, pulse selecting means for selecting a pulse from either the first or second pulse detector on the basis of the feature of the detected body movement, and blood pressure value deriving means for deriving a blood pressure value from the selected pulse.