Infusion pump principle

Infusion pump is a mechanical or electronic control unit, it passed to the conduit to achieve the purpose of controlling the infusion rate.

Commonly used to require strict control and dosage for infusion, as in application boost drugs, antiarrhythmics drugs that infants with intravenous infusion or intravenous anesthesia. Infusion pump press output constant factors into liquid pressure pump and constant flow pump. For liquid chromatography, infusion pump flow stability is more important, this is because the velocity of change will cause the solute retention value changes and leave the value is the main basis of chromatographic qualitative. Therefore, the constant flow pump of wider application. Infusion pump according to the workings of a mechanical pump pneumatic pump and two broad categories. Mechanical pumps and screw-driven injection pump, single-piston pump, double-piston pump and reciprocating pump. Several basic properties of infusion pump summarized in the table below. Several high pressure infusion pump performance comparison name constant current or voltage pulse replacement mobile-phase gradient Elution Recirculation pump constant pressure pneumatic amplified prices are convenient need two pumps are not high screw-driven injection pump is easy to take two constant flow pump is not a medium single-piston pump and constant flow have convenient cocoa lower Pistons reciprocating pump and constant flow of small convenience cocoa high current has reciprocating pump diaphragm for cocoa medium