MEDICAL SUCTION DRAINAGE APPARATUS

摘要

A suction drainage system for body cavities includes a suction collection container (22), and a disposable suction control chamber (30) through which an essentially constant level of suction is applied to a body cavity. Drained fluids flow into the suction collection container, into the suction control chamber through an elastomeric check valve (46) which precludes backflow of fluids to the patient. A pressure monitoring tube (64) in the suction control chamber has a lower end communicating with ambient pressure and an upper end communicating with the interior of the suction control chamber. A ball (68) in the tube rises to a level which is proportional to the negative pressure inside the suction control chamber. The suction control chamber (30) can be removably mounted to the collection container (22).