| 摘要 |
<p>A valve arrangement for breathing apparatus comprises a tubular member (1) figs. 1 and 2 not shown, adapted for supplying breathing gas to a face mask, having a branch tube (3) connected thereto terminating in an aperture in the wall thereof and a valve member (6) in the form of a flexible disc seated on the inside of the tubular member (1) to cover the aperture and deformable on inhalation to communicate the branch pipe and the tubular member. A conduit (2) connects the member (1) to a face mask for narcosis or inhalation or the like, whilst a rubber bag (4) for possibly supplying air to the patient is attached to the other end of the member (1). A dosage tube (5) for a narcotic extends concentrically with the branch tube (3) into the aperture of this tube, and on the dosage tube is a notch for supporting centrally the valve disc (6). When closed the valve disc (6) has a shape corresponding to the curvature of the member (1), and is provided with one or more notches (7) by which a locking member on the inside wall of the member (1) may retain the disc.</p> |
