Development of a Membrane Oxygenator Combined with Pumping Function

为缩短体外循环回路，提高氧合效率，设计了一种结合泵送功能的新型膜式氧合器。在聚碳酸酯圆筒中，将1500根硅胶管捆绑在弹性硅胶填料中。气瓶进出侧均装有球阀，膜总有效面积为7.4×10~(-2)m~(-2)。在性能试验中，膜由往复泵气动驱动，气体侧100%氧气循环。模拟试验表明，当泵入1·7×10~(-6)S盐水溶液时，氧分压由入口的0·7×10~(-4)Pa升至氧合器出口的7×10~(-4)Pa。

A new membrane oxygenator combined with pumping function was designed to shorten the extracorporeal circulation circuit and to increase the efficiency of oxygenation. At a polycarbonate cylinder, 1500 silicone tubes were bundled and packed among elastic silicone filler. In both inflow and outflow sides of the cylinder, ball valves were equipped.The total available area of the membrane was 7.4*10^<-2> m^2. The membrane was pneumatically driven with a reciprocating pump in performance tests, in which 100% oxygen circulated in the gas side. The mock test shows that the partial pressure of oxygen increases from 0.7*10^4 Pa at the inlet to 7*10^4 Pa at the outlet of the oxygenator when 1.7*10^<-6> m^3 s^<-1> saline solution is pumped.