| 摘要 |
PROBLEM TO BE SOLVED: To provide a system device that monitors an operation of a pump for injecting fluid into a patient.SOLUTION: A pump for pumping fluid includes a tube platen, a plunger, a biasing member, an inlet valve, a delivery valve, an actuator mechanism, a pressure sensor and a processor. The pressure sensor is adjacently disposed in at least one of the inlet valve, the delivery valve and the plunger. The processor is connected to the pressure sensor and receives a pressure signal from the pressure sensor. The inlet valve, the delivery valve and the plunger are configured to feed the fluid in multiple cycles, and each cycle has a bottom pressure level and a peak pressure level. The processor is configured to determine that a downstream blockage exists when a difference between the peak pressure level and the bottom pressure level is larger than a predetermined threshold value in one cycle of multiple cycles by using a pressure signal.SELECTED DRAWING: None |
