公开(公告)号：US4958075A

公开(公告)日：1990-09-18

申请号：US453227

申请日：1989-12-14

申请人： Leslie E. Mace ,  Daniel W. Knodle ,  Lawrence L. Labuda ,  Philip F. Nuzzo

发明人： Leslie E. Mace ,  Daniel W. Knodle ,  Lawrence L. Labuda ,  Philip F. Nuzzo

IPC分类号： A61B5/083 ,  G01N21/03 ,  G01N21/05 ,  G01N21/35 ,  G01N33/497

CPC分类号： G01N33/497 ,  A61B5/0836 ,  G01N21/05 ,  G01N2021/0321 ,  G01N21/3504

摘要： Sampling attachments or systems for infrared gas analyzers of the non-dispersive type. Major components of the system include a sampling device or cuvette, a vacuum pump for effecting a flow of the gases to be analyzed through the cuvette, a microprocessor based pump control, and a switch which is closed and allows the pump to be turned on only if an appropriate sampling cuvette is connected up to the pump. The sampling attachments are designed for medical applications--to provide readings of tidal carbon dioxide, for example. They have a minimally invasive nasal cannula for collecting the gases which are to be subjected to analysis; viz., those exhaled by a patient. These gases are conducted to the cuvette through a line which is gastight but allows moisture to escape, thereby keeping moisture mixed with the gases being analyzed from corrupting the readings outputted by the gas analyzer. The attachment can be easily and quickly disassembled and the components disposed of or sterilized and recycled if they become contaminated. Provision is made for collecting the gases after they have been discharged from the cuvette so that they will not be discharged into and perhaps contaminate the ambient surroundings.

摘要翻译： 非分散型红外线气体分析仪的取样附件或系统。 该系统的主要部件包括取样装置或比色皿，用于通过比色皿进行待分析气体的流动的真空泵，基于微处理器的泵控制器和关闭的开关，并允许泵仅打开 如果适当的采样比色皿连接到泵。 采样附件设计用于医疗应用 - 例如提供潮气二氧化碳的读数。 它们具有用于收集要进行分析的气体的微创鼻插管; 即患者呼出的那些。 这些气体通过气体传导到比色杯，气体气体允许水分逸出，从而保持水分与被分析气体混合，从而破坏气体分析仪输出的读数。 附件可以方便快捷地拆卸，并将其组件处理或灭菌，并且如果它们被污染则可循环使用。 这些设备是在从比色皿排出之后收集气体，以便它们不会排出，也可能污染周围环境。