FIELD: medicine.
SUBSTANCE: group of inventions relates to medical equipment, namely to systems for injection of one or several medical liquids in object, such as patient. Medical liquid injection system comprises driving mechanism of syringe piston, which includes control source and driving plunger, and logic circuit of driving plunger movement control. Control source is configured to move driving plunger in direction of liquid release, causing medical liquid release from syringe, inserted into said system of injection of medical liquid. Logic circuit of control is configured to implement speed increase of driving plunger on basis of preset pressure. Preset pressure is related with movement of driving plunger in direction of fluid release and is independent variable. In second version of medical liquid injection system logic circuit of driving plunger movement control is configured for iterative obtaining of drive plunger movement rate from beginning of at least one phase of injection protocol and for at least part of at least one phase. Each rate obtaining is based on difference between preset pressure and observed pressure, and preset pressure is independent variable. In third version medical liquid injection system comprises pressure control circuit, configured to obtain observed pressure on basis of power, supplied to control source, and rate of driving plunger. Observed pressure is related with movement of driving plunger, performed by control source. In fourth version medical liquid injection system comprises first syringe piston drive mechanism, second syringe piston drive mechanism and logical circuit for determining flow rate, wherein drive mechanisms operate simultaneously. First syringe piston drive mechanism includes first control source and first driving plunger. Second syringe piston drive mechanism includes second control source and second driving plunger. Logic circuit for determining flow rate is configured to calculate flow rate for each plunger drives of first and second syringes on basis of input data of total flow rate and concentration for at least one phase of injection protocol. In fifth version medical liquid injection system comprises logical circuit for determining volume of injection, configured to calculate volume of injection for each drive, based on input values of total volume of injection and concentration for at least one phase of injection protocol. In sixth version medical liquid injection system comprises display and logic circuit of display control, including programmed variable of concentration. Logic circuit of display control is configured to display at least one polychromatic graphic image on display and to set ratio of number of colors in at least one polychromatic graphic image with programmed variable of concentration for phase of injection protocol.
EFFECT: inventions allow automatic adjustment of flow rate, not requiring correction by operator.
69 cl, 13 dwg
