A method and apparatus for detecting proximal and distal occlusions of flexible tubing in a positive displacement pump. A volumetric pump (30) includes a motor (146) that rotatably drives a cam assembly (142). The rotating cam assembly actuates a plunger (48), causing it to compress a pumping portion...http://www.google.com/patents/US5116203?utm_source=gb-gplus-sharePatent US5116203 - Detecting occlusion of proximal or distal lines of an IV pump
