A modular infusion pump system utilizes a positive displacement pump for pumping a known quantity of fluid for each stroke. A plurality of longitudinally spaced apart fixed combs cooperate with a resilient tube to define a known pumping volume. A plurality of movable combs are interdigitated with the...http://www.google.es/patents/US4781548?utm_source=gb-gplus-sharePatente US4781548 - Infusion pump system and conduit therefor
