One used device was returned for evaluation.During functional testing, a syringe was used to inflate the device cuff with 8 cc of air.The device was then submerged in water.Bubbles were observed escaping a small pin hole located on the pilot balloon.Manufacturing performs a 100% leak test prior to product dispersal.Had the hole been present at that time, a leak would have been detected and the device scrapped.The root cause for the hole could not be definitely determined; however, the issue was not identified as being attributed to the manufacturing of the device.
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