Patent ID: 9198583
Filing Date: 2015-12-01
Classification: A61B

Abstract:
1. A method of correcting an error in a measured blood pressure, the method comprising: measuring a blood pressure at a first site of a first body by at least one sensor; calculating, using a processor, the error in the blood pressure, which is transmitted by the at least one sensor, based on a correlation between a shape of a sphygmogram measured at a first body part and a difference between a blood pressure measured at the first body and a blood pressure measured at a second body part; correcting, using the processor, the blood pressure which is transmitted by the at least one sensor using the calculated error; and outputting data corresponding to the corrected blood pressure to an output unit, wherein the first body part is one of the first site of the first body and a first site of a second body, which is a same body part as the first site of the first body, and the second part is one of a second site of the first body and a second site of the second body, wherein the calculation is performed by combining coefficient values and an index corresponding to the shape of the sphygmogram measured at the first body part, wherein the index is calculated based on a difference between a maximum amplitude blood pressure at which the sphygmogram measured at the first site of the first body has a maximum amplitude and the blood pressure which is transmitted by the at least one sensor, and the coefficient values are determined by using a method of calculating a trend line which indicates a correlation between the index and the error in the blood pressure which is transmitted by the at least one sensor.