| 摘要 |
PURPOSE:To enable the selection of the artificial blood vessel and transfusion vessel suitable for a treatment and to make the treatment, etc., of a high degree by providing an elastic vessel (artificial blood vessel, etc.) and fluid transfer pump in the middle of a fluid circuit, measuring the fluid pressure in the elastic vessel and identifying a fluid parameter. CONSTITUTION:The identifying device 1 for identifying the fluid parameter of the elastic vessel 3, such as artificial blood vessel or artificial transfusion vessel, has the fluid circuit 2 provided with the elastic vessel 3 to be measured of the fluid pressure and the transfer pump 4 in the middle. The device measures the fluid pressure in the elastic vessel 3 by means of pressure sensors 5, 6 and inputs the results of the measurement via an A/D conversion board 7 to a microcomputer, thereby identifying the fluid parameter of the elastic vessel 3. For example, the parameter is so determined as to minimize the square sum of the error with the water pressure calculated by calculation using the DC component of the water pressure measured by the pressure sensor 6 of the side further from the pump 4 and the initial value of the water flow. The initial value of the water flow is obtd. by measuring the discharge rate of the pump 4 with a measuring cylinder and using the rate during 1sec thereof. |
