Lot number: lot contains the following possible numbers: 180528.(b)(6).Device evaluation: one breathing circuit was received for investigation.The sample was received in used condition without its original packaging.Immediate visual inspection detected a hole in the product.A leak functional test was completed and the device did not pass.In addition, leak tests were audited in order to verify that all components were free of damage or defects.Thirty two (32) units were reviewed and no discrepancies were found.A review of the manufacturing process was also conducted and was considered adequate and correct.Based on the evidence and testing, the complaint allegation was confirmed.The root cause was listed as unknown.
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