| 摘要 |
A pneumatic shuttle valve for a ventilator (1842) is disclosed. The pneumatic shuttle valve selectively connects one of two inlet openings (312, 334) to an outlet opening (338) . The shuttle valve has a plug (336) that is forced by gas pressure entering the second inlet opening, to move to and seal against a first sealing surface (340) , thereby forming a passageway between the second inlet opening and the outlet opening. The plug is forced by gas entering the first inlet opening, to move to and seal against a second sealing surface (342) , thereby forming a passageway between the first inlet opening and the outlet opening. |
