Patent ID: 8784325
Filing Date: 2014-07-22
Classification: A61B

Abstract:
1. A blood pressure measuring apparatus comprising: a pressure sensor for detecting a sphygmus wave and pressure of a blood vessel in a subject; a pulse detecting unit for detecting a peak-to-peak interval of the sphygmus wave of the subject, which is detected by the pressure sensor; an optimum rate of pressure change detecting unit for detecting an optimum rate of pressure change of the blood vessel by using the peak-to-peak interval of the sphygmus wave; a compression unit for performing a compression operation in which the blood vessel is compressed at the optimum rate of pressure change detected by the optimum rate of pressure change detecting unit, or a decompression operation in which the blood vessel is compressed so as to be closed, and is then decompressed at the optimum rate of pressure change; and a blood pressure detecting unit for detecting blood pressure of the subject, based on the sphygmus wave and the pressure of the blood vessel, which are detected in the compression operation and the decompression operation; the pressure sensor being in operative communication with the pulse detecting unit, the optimum rate of pressure change detecting unit, the compression unit and the blood pressure detecting unit, and wherein the optimum rate of pressure change detecting unit detects the optimum rate of pressure change of the blood vessel by using information that the peak-to-peak interval of the sphygmus wave is inversely proportional to the optimum rate of pressure change of the blood vessel.