[In vitro testing of the intravenacaval respiratory assist device (I)--Pressure drop characteristics and oxygen transfer performance].
The intravenacaval respiratory assist device(IVOX) of three different sizes developed by the present authors were evaluated experimentally in vitro. The tests using in turn two different test chamber materials(rigid and elastic) showed that a pressure drop occured. The pressure drop was higher in rigid test chamber than that in the elastic one, and the pressure drop difference between these two kinds of chamber increased with the diameter of the bundle of IVOX. Oxygen transfer rate, with water as the medium in the tests, was augmented with increasing water flow rate and gas flow rate, and with decreasing inlet oxygen concentration in water. It was concluded that, to avoid bubbles produced by IVOX, the gas flow rate should be controlled with fixed outlet water pressure, and vacancy be used in the effluent gas system.
Huang
Y
Y
Engineering Mechanics Department, Sichuan Union University, West Campus, Chengdu 610065.
Tan
X
X
Pei
J
J
D015199:Extracorporeal Membrane Oxygenation; D066298:In Vitro Techniques; D008962:Models, Theoretical; D010106:Oxygenators; D011312:Pressure; D014684:Venae Cavae