Ringer Drone / Drones for the patient

When many bleeding patients occur during the war time, they need to be prescribed ringer solution.
However, since there are no place to hang the ringer, a medical practitioner must hold it
over the patient's head.
Keeping the ringer in the hand leads to a waste of manpower,
when a small number of medical practitioners need to treat a large number of patients at a short time.
The drones which fly in the air and act as a hanger of the ringers.
As a result, the doctors won't have to hold the ringers at outdoors for a long time.
A small number of doctors will be able to provide sufficient amount of first aid
to a large number of patiets