| 摘要 |
A ventilation training analyzer manikin, for providing a quantitative measurement of the relative proportions of breathable gas volume delivered to a patient's lungs and patient's stomach during ventilation attempts by a user, thus demonstrating that the user is or is not using proper ventilation methods and equipment operating techniques. The manikin has a pressure actuated valve that opens at 15 cm H2O gas pressu re to mimic the opening of the human esophageal sphincter. The opening of the valv e at high pressure shows users that delivery of excess volumes of high pressure g as results in aspiration of the stomach contents, potential lung damage and risk of dea th in some cases. The manikin provides (1) an anatomical simulation of a human respiratory tract including a pharynx model structure, a larynx model structure; and lun g model structure for mimicking the physiological attributes of a human bronchia and lungs, and measuring the tidal volume of gas delivered to the lungs and (2) an anatomical simulation of an upper portion of a human alimentary canal including the pharynx model structure and an esophagus model structure with means for measuring th e tidal volume of gas delivered to the stomach and lower esophageal sphincter pressu re actuated valve for mimicking the physiological attributes of a human lower esophageal sphincter to open when gas pressure differential between an upstream and a downstream portion of the esophageal model structure exceeds a selected threshold pressure differential such as 15 cm H2O. Gas volume detection means can include: a vane type respirometer; a flow transducer; and a pressure transducer.</SDOAB >
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