Analysis: the oasis chest drain was not returned.No product number or lot number was provided.Multiple attempts to obtain more detailed information from the physician were requested.No responses from the physician were received.As stated in the instruction for use (ifu): ¿manual high negativity vent: to lower the height of the water seal column and to lower chest drain vacuum pressure when connected to suction, depress the high negativity vent located on top of the drain until the water seal column lowers to the desired level.¿ conclusion: based on the results of the investigation atrium medical corporation cannot conclude that the oasis chest drain was faulty.
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