Qn#(b)(4).The complaint sample was received.The size and lot number were the same as the complaint description.The part from the device that detached during the procedure also was returned for investigation.On review of the device, it was noted that there was not excess glue that detached from the device because the color was different.Glue was clear colored, but the detached part was light blue.The excess glue was hard to detach from the cuff with the clear color.Additional testing was performed by comparing the detached part with the airway tube.Visual inspection was performed, the material condition and color were the same as the airway tube.The round shape of the part potentially from the airway tube area.The root cause is that both areas, backplate distal end and drain tube to backplate gluing area have the presence of the glue on the jointing area but there was no clear evidence that an excess glue was detached from both areas.Furthermore, the foreign part or small plastic ring as per the complaint description was not available with the complaint sample to further investigate.Based on the review results of the two complaints, one was manufacturing related, and one is undetermined.The device history review found no abnormality related to the tube foreign matter/flashing.Further investigation will be carried out through nonconformance.
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