CLOSED LOOP SYSTEM FOR CONTROLLING THE REFLUX OF A FLUID INJECTION

摘要

The invention describes a system for injecting and controlling a flow of liquid to be injected, comprising:
a peristaltic pump (4);a catheter (8) for delivering the fluid to be injected;a pressure sensor (6) for measuring the liquid pressure in the catheter,control means (44) for receiving data from the pressure sensor (6) and for controlling the pump (4) on the basis of the data measured at different times.

主权项

1. System for injecting and controlling a flow of liquid to be injected, comprising:
A catheter (8), comprising a duct, for delivering a fluid to be injected, A peristaltic pump (4), said pump operating in cycles, such that an elementary volume of fluid is delivered during each cycle, A pressure sensor (6), for measuring the liquid pressure in said duct, Control means (44) for receiving data from the pressure sensor (6), and for generating an indicator, relative to a cycle, on the basis of at least two measurements of said pressure at different times of a same cycle, The control means being able to control the pump on the basis of the value of this indicator.