Infusaid implantable infusion pump

Vapor Pressure. The Shiley Infusaid implantable infusion pump utilizes energy stored in a two-phase fluorinated hydrocarbon fluid. The pump consists of a refillable chamber that holds the dmg and a chamber that holds the fluid. The equiUbrium vapor pressure of the fluid, a constant 60 kPa (450 mm Hg), compresses the bellows, pumping the dmg through a bacterial filter, a capillary flow restrictor, and an infusion cannula to the target body site (56,116). 

Figure 2.2 Diagrammatic representation of the Infusaid implantable infusion pump during operation (top) and during refilling (bottom).

A typical example is the development of Infusaid , an implantable infusion pump by Metal Bellows, for the constant infusion of heparin in anticoagulation treatment,of insulin in the normoglycermic control of diabetics,and of morphine for patients suffering from the intensive pain of a terminal cancer. ... 

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