(b)(4).Results of investigation:one representative (closed) sample was received for evaluation.The sample was inspected in accordance with our inspection procedure and no issues were found.In addition, the connector (mr850 ad ire mnfold w port) was dimensionally inspected according to the applicable drawing and no problems were observed.The returned sample was found within specifications.No issues were found during the review of internal production records for the lot indicated that could result in the reported condition.The material components of the connector were dimensionally inspected and component was found within carefusion specification.The manufacturing process review revealed no issues.At this time, carefusion quality personnel perform a sampling of product testing for leakage, along with an incoming inspection to the 22 mm plug is performed with a gauge prior to passing to the next stage.Based on the investigation results, the most probable cause for the issue reported could not be confirmed as the returned sample was found within carefusion specification.As a preventive action, carefusion recommends following the product label for recommended use.The product label states the following: humidifier: mr 850 with wire adapter 900mr801, minimum flow rates 3.0 lpm.Humidifier: mr700, mr720, mr730, hc500 with wire adapter 900mr901, minimum flow rates 1.5 lpm.Carefusion will continue to monitor and trend this report.
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