Foster P A
Br J Anaesth. 1982 Mar;54(3):359-62. doi: 10.1093/bja/54.3.359.
A simple, compact and lightweight device for coupling active scavenging systems to shrouded breathing system valves is described. Provided a scavenging minute flow rate greater than the expired gas volume is available, the unit can handle automatically changes in both variables. Optimal function is achieved with scavenging flows from about twice the discharged gas flow to about 50 litre min-1. At these flows the valve can accommodate the outflow of gas-driven ventilators where driving gas and circuit gas are discharged through the same port. There is no interference with expiratory valve function in the event of scavenging failure.
描述了一种用于将主动清除系统与带罩呼吸系统阀门相连的简单、紧凑且轻便的装置。只要有大于呼出气体量的清除分钟流量可用，该装置就能自动处理这两个变量的变化。当清除流量约为排出气体流量的两倍至约50升/分钟时，可实现最佳功能。在这些流量下，该阀门可容纳气体驱动呼吸机的流出气体，其中驱动气体和回路气体通过同一端口排出。在清除失败的情况下，不会干扰呼气阀的功能。
