This report is being submitted as follow up no.1 to provide the device return date in section d9, update section h3, and to provide the completed investigation results.The actual sample was received for evaluation and the user provided a movie.Review of the provided movie showed that the leak was coming from the side of the air vent port.Three-way stopcocks, three pieces in total, were attached to the air vent port and the pressure monitor port of the actual sample.These three-way stopcocks had not been installed when the product was released from the manufacturer.Visual and magnifying inspection of the actual sample revealed that the air bent port had been cracked from the edge.Based on experience, it was likely that the crack in such a form occurred due to over-tightening, chemical crack, or interaction of both factors.The streak that had occurred lengthwise near the crack was confirmed to be a parting line occurred at the joint between molds in the injection molding process and not a crack.A factory-retained cap was attached to the air bent port of the actual sample, and then physiological saline solution was flowed by head into the actual sample.As a result, leak from the crack was observed.Based on the provided information and investigation results, there is no definitive evidence that this event was related to a device defect or malfunction.It was confirmed that the actual sample had the crack leading to the leak.This product is subjected to the leak test with the caps for inspection attached.As for the caps for the products, they are tightened to the quantitatively controlled torque after the leak inspection, and then the products are shipped from the factory.Since the specifications of the circuit products and the customer's usage condition were unknown, the exact cause of the reported event cannot be definitively determined based on the available information.
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