Infusion pumps provide significant benefits over the manual method of fluid administration, which also include the ability to deliver fluids at a precisely programmed rate or automated intervals fluids in very small quantities.
There is a large variety of infusion pumps, designed for specialized purposes:
· PCA pump (Patient-controlled analgesia) is used to administer painkillers, and allows patients to independently control the amount of medication they need.
· Enteral pump is a pump which is used to deliver liquid medications and nutrients to the digestive tract of a patient.
· Insulin pump is often used at home, and is specially designed to deliver insulin to diabetic patients.
mechanical or electrical.
Different pumps work in different ways:
· In an elastomeric pump, the fluid is held in an expanding tank reservoir and the fluid delivery in this type of pump is controlled by the pressure from the elastic walls of the balloon.
· In a syringe pump, the fluid is held in the syringe container and the rate at which the fluid is delivered is controlled by the movable piston.
· With a multichannel pump, liquids can be delivered from multiple containers at multiple rates.
· A Smart pump is equipped with safety features such as user notifications which are activated in the event of a risk of undesirable drug interactions, or when the user defines the pump parameters beyond the specified safety limits.
· In the peristaltic pump, a set of rollers pinches down on a length of flexible tubing, pushing fluid forward.