VALVE FOR USE WITH CHEST DRAINAGE SYSTEM

摘要

A valve for use in a chest drainage device is disclosed, the chest drainage device is adapted to receive liquid and air a patient's chest cavity via an inlet and to permit air to escape through an outlet for air to leave the chest drain, the inlet and outlet define a flow path and the valve is disposed along the flow path. The valve has a valve element that separates an upstream chamber from a downstream chamber and has a first and second sealing surface that are opposed so that when the first and second sealing surfaces that are opposed so that when the first and second sealing surfaces are in contact, air pressure below a predetermined value will be prevented from moving from the downstream location to the upstream location.