Qn# (b)(4).The returned device size was the same as the complaint description.Review on the product appearance showed no abnormality such as a tear, burst, or rear at the cuff or joint.A leak test was performed and there was no presence of bubble on the cuff or joint area.A second flow leak test was performed to ensure there was no leak identified at gluing area or cuff to backplate and airway tube to backplate.There was no leak found.The device history review for lot 11f22c0205 was reviewed and there was no nc for that lot during production.No corrective action is required at this time.The root cause was identified as no problem found on the sample.
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