Infusion pumps are medical devices that deliver fluids, medications, or nutrients into a patient's body at specific rates and volumes. There are two main types - syringe pumps which use a motor-driven plunger to push fluid from a syringe, and volumetric pumps which use rollers or pistons to control fluid delivery. Infusion pumps are used for chemotherapy, pain management, nutrition, and anesthesia/sedation. Proper maintenance of infusion pumps includes cleaning, changing tubing and batteries as directed, and keeping electromagnetic sources away from the pump to avoid interference.