INJECTOR FOR FLUID INJECTION INTO HUMAN OR ANIMAL BODY AND METHOD TO CONTROL THIS INJECTOR Russian patent published in 2017 - IPC A61M5/00 

FIELD: medicine.

SUBSTANCE: injector for fluid injection into a human or animal body comprises a pump for fluid supply at a certain flow rate, a control device to control the pump and establish the desired fluid flow rate, and a pressure measuring device connected to the control device to measuring the pressure of fluid supplied by the pump. The required amount of pumped fluid pressure is predetermined in the control device and the control device is designed to compare the fluid pressure measured by the pressure measuring device to the desired value of the pump fluid pressure, with a possibility of integration, in the event that the necessary pressure is exceeded in some time interval of the function of dependence on pressure time measured by the pressure measuring device. The control device also has a possibility of integration of pressure difference between the pressure measured by the pressure measuring device and the desired pressure of the fluid supplied by the pump, over this time interval to obtain the pressure integral value. The control device disconnects the pump or reduces its power if the resulting pressure integral value exceeds the predetermined limit value of the integral. A method to control the injector for fluid injection is disclosed.

EFFECT: inventions allow to increase safety by preventing excess of dangerous pressure in the injection system and excluding extension of the injection process due to decreased power.

18 cl, 4 dwg