Disclosed is an intravenous fluid dispensing system (3) for dispensing one or more fluids from one or more reservoirs (2) towards a dosing device (4) to allow improved medication of a patient. The fluid dispensing system comprises a reusable interconnection set (1) suited for use with multiple patients. The reusable interconnection set comprises for each reservoir a first tubing part (7) for establishing a fluid connection from the reservoir to a corresponding filling chamber (5) of a filling and injection device (6) where each filling chamber stores an amount of fluid from the corresponding reservoir； and a second tubing part (10) for establishing a fluid connection from each of the filling chambers towards the dosing device, along with a first particle filter (13) for preventing particles of a size larger than a predetermined first size from being injected into the patient. The first particle filter is located downstream of the one or more filling chambers, within the second tubing part of the reusable interconnection set downstream of the filling chambers so that the first particle filter can be reused for several patients. A disposable interconnection line is used and is intended to be renewed with each patient； the disposable interconnection line providing a fluid connection between the reusable interconnection set and the dosing device and comprising a first and a second tubing part which are releasably connectable to each other in a liquid tight manner, wherein the fluid connection between the first and the second tubing part is established by means of an one-way valve.
