The Peristaltic Infusion Pump, and in particular the morecurved curvilinear design, is not only a preeminent infusionpump in today’s medical field but is gaining traction as theinfusion pump that can meet tomorrow’s needs in deliveringthe most precise, accurate dosing.Curvilinear peristaltic pumps are positive displacementpumps used for fluid transport in a variety of industries.1-2They can deliver large volume fluids at both medium- tohigh-flow rates and slower rates where precision andaccuracy are paramount.3 Today curvilinear peristalticpumps are indicated for a variety of infusions such ascontinuous, patient controlled analgesia (PCA), totalparenteral nutrition (TPN), intermittent and variabletherapies, some of which may include intravenous,epidural, or subcutaneous delivery methods.4How Peristaltic Pumps WorkPeristaltic pump mechanisms are either linear or curvilinear.Both operate in similar fashion, using a sequence of pumpstrokes or “boluses”. With each motor rotation, tubing issqueezed and released, thereby pushing fluid towards thepatient in a series of evenly spaced micro-boluses whileprohibiting backflow.2-3, 5 Pumps utilize “fingers” to exertand release pressure on tubing to direct fluid flow towardsthe patient. Fluid volume and speed is dictated by factorsincluding roller/finger size and number, pump settingsthat determine how close in time the “boluses” occur,3the chosen infusion therapy and patient need.