JP2004154376A5 - - Google Patents

Claims (5)

In a circulatory dynamics measuring device for detecting the circulatory dynamics of blood circulating inside a living body by transmitting and receiving waves from the surface of the living body to blood inside the living body, a circulation sensor for detecting the circulatory dynamics, and a drive unit for driving the circulation sensor When a reception unit that receives a signal from the circulation sensor, a blood pressure measuring unit for measuring the blood pressure of the living body, a processing program related to the hemodynamics using data relating to blood pressure obtained from the blood pressure measurement unit executes a signal operation unit for, have a output unit for outputting results on the hemodynamics, the previous SL signal operation unit, the value correlated with blood flow rate flowing through the blood vessels in the in vivo, obtained from the blood pressure measuring portion A circulatory dynamics measuring device characterized in that blood rheology is obtained using an average blood pressure value calculated using a blood pressure value and a correction coefficient. The circulatory dynamics measurement apparatus according to claim 1, wherein the signal operation unit obtains the correction coefficient by using the blood vessel diameter of a blood vessel the circulating sensor is measured when obtaining the blood flow velocity, using the correction factor a mean blood pressure value calculated Te, circulatory dynamics measurement apparatus characterized by determining the blood rheology using a value correlated with the blood flow velocity through the vessel in the in vivo. The circulatory dynamics measuring device according to claim 2, wherein the signal calculation unit uses the minimum blood pressure value and the maximum blood pressure value obtained from the blood pressure value, the average blood pressure value is Pm, the minimum blood pressure value is Pd, and the maximum blood pressure value is calculated. Pm = Pd + (Ps−Pd) / C where Ps is the hypertension value and C is the correction factor.
In the mean blood pressure value calculated by a formula represented hemodynamics measuring apparatus and obtaining the blood rheology using a value correlated with the blood flow velocity through the vessel in the in vivo. In circulatory dynamics measurement apparatus according to any one of claims 1 to claim 3, wherein the signal operation unit, to seek blood rheology over the reciprocal of the mean blood pressure to a value that correlates with the blood flow velocity Characteristic circulatory dynamics measuring device. In circulatory dynamics measurement apparatus as claimed in any one of claims 4, circulatory dynamics measurement apparatus, characterized in that the circulation sensor is inside the blood pressure measurement unit.