Method for measuring blood pressure, and apparatus for measuring blood pressure based on said method
First Claim
Patent Images
1. A method of measuring blood pressure, the method comprising:
- sensing, by a pressure sensor, a static pressure, which is sum of an atmospheric pressure and an applied pressure, and a blood pressure of a blood vessel delivered to a skin, and outputting an electrical signal based on the sensed static pressure and the sensed blood pressure, wherein the electric signal is a composite signal of the atmospheric pressure, the applied pressure, and the blood pressure;
dividing the electrical signal into a direct current (DC) signal component and an alternating current (AC) signal component;
processing the DC signal component and the AC signal component;
calculating the applied pressure using the processed DC signal component, by subtracting the atmospheric pressure from the static pressure sensed by and output from the pressure sensor;
calculating a blood pressure average using calculated applied pressures and swing values of the processed AC signal component, wherein a swing value of the processed AC signal component is a difference between the maximum and minimum values of the processed AC signal component;
after the calculating of the blood pressure average, calculating a pulse pressure by;
(a) dividing a value, which is obtained by subtracting a second constant from a product of the blood pressure average and a first constant, by the applied pressure, and(b) multiplying a resulting value of the (a) by the swing value; and
displaying at least one of the blood pressure average and the pulse pressure on a display device,wherein the dividing, the processing, the calculating the applied pressure, the calculating the blood pressure average, and the calculating the pulse pressure are each implemented via at least one processor.
1 Assignment
0 Petitions
Accused Products
Abstract
A method of measuring blood pressure, including: sensing an atmospheric pressure, an applied pressure, and a blood pressure of a blood vessel delivered to a skin and outputting an electrical signal indicating a result of sensing the pressures; dividing the electrical signal into a divided electrical signal which includes a direct current (DC) signal and an alternating current (AC) signal; processing the divided electrical signal; calculating the applied pressure using the processed electrical signal; and calculating a blood pressure average using the calculated applied pressure and a swing value of the processed electrical signal.
-
Citations
6 Claims
-
1. A method of measuring blood pressure, the method comprising:
-
sensing, by a pressure sensor, a static pressure, which is sum of an atmospheric pressure and an applied pressure, and a blood pressure of a blood vessel delivered to a skin, and outputting an electrical signal based on the sensed static pressure and the sensed blood pressure, wherein the electric signal is a composite signal of the atmospheric pressure, the applied pressure, and the blood pressure; dividing the electrical signal into a direct current (DC) signal component and an alternating current (AC) signal component; processing the DC signal component and the AC signal component; calculating the applied pressure using the processed DC signal component, by subtracting the atmospheric pressure from the static pressure sensed by and output from the pressure sensor; calculating a blood pressure average using calculated applied pressures and swing values of the processed AC signal component, wherein a swing value of the processed AC signal component is a difference between the maximum and minimum values of the processed AC signal component; after the calculating of the blood pressure average, calculating a pulse pressure by; (a) dividing a value, which is obtained by subtracting a second constant from a product of the blood pressure average and a first constant, by the applied pressure, and (b) multiplying a resulting value of the (a) by the swing value; and displaying at least one of the blood pressure average and the pulse pressure on a display device, wherein the dividing, the processing, the calculating the applied pressure, the calculating the blood pressure average, and the calculating the pulse pressure are each implemented via at least one processor. - View Dependent Claims (2, 3, 4, 5, 6)
-
Specification