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A device history record (dhr) review was conducted which indicated all inspections were completed and no issues were noted during manufacture.Three product samples were received for evaluation.Visual and functional testing were performed.Visual inspection was performed at 12" under normal lighting to received unit, in order to detect any damage on the cuff, airline or pilot balloon.No discrepancies were found.Samples were filled with 5cc of air in order to see if there was any functional problem.The sample were inflated, sample 1 and 2 with air, the cuff only inflated one side.According to the instruction for use(ifu), the pilot balloon was manipulated and the cuff inflated completely.After the whole cuff inflated, it was deflated and inflated 4 times, all the times the cuff inflated completely.When the sample 3 was inflated, the pilot balloon inflated but all air was stuck in it.According to the ifu, the pilot balloon was manipulated and the cuff inflated completely.After the whole cuff inflated, it was deflated and inflated 4 times, all the times the cuff inflated completely.Air cuff symmetry test was performed to the unit.When the cuffs were measured the cuffs, the percentage for the symmetry for sample 1: 37.83%, for sample 2: 29.41 and for sample 3: 36.11%.These results are below 33.3% that is the minimum acceptable.Based on the test, the unit 2 is out of spec.The complaint is confirmed.A corrective and preventative action has been opened to address root cause and actions.This remediation mdr was generated under protocol b10009406, as a result of warning letter cms# (b)(4).
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