Abstract: A device for the administration of liquids, drugs,. or nutrients to a patient includes a deformable bag for containing a liquid, a drug, or a nutrient to be administered, in fluid communication, through a tube, with a needle, or a tube, or a catheter that can be inserted in a patient. The device includes an expandable air container whose expansion generates the compression of the deformable bag, a compressed air generation component adapted to introduce air into the expandable air container, a first proportional valve associated with the tube. The valve is configured to regulate the flow of the liquid, drug, or nutrient from the deformable bag generated by the compression of the bag due to expansion of the expandable air container, and a control unit connected to the valve configured to control operation of the valve according to parameters of administration of the liquid, drug, or nutrient to the patient.