The warmer, nti part number 6-820-00; serial number (b)(4) arrived at nti on 1/30/2020 from (b)(4) distributor (b)(4).The unit was evaluated under nti capa (b)(4).During engineering inspection, the warmer was found to have experienced high heat as evidenced by the inside of housing fused together with the core.The backnutnut of the connecter was found to not be fully engaged onto the housing.The connector pins were found to be indexed one position axially, which, per capa (b)(4) (closed october 2018), causes the warmer to overheat and not display on-screen and no audible alert.Upon follow-up communication with the distributor in (b)(4), it was determined that the warmer had been autoclaved approximately 100 times, which is the defined life of the warmer according to the product requirement specification document (b)(4).The root cause is that connector was indexed in such a way which resulted in the device not showing the warmer icon and overheating with no audible alert.This root cause was identified in capa (b)(4) and corrective actions were taken on all product manufactured after closure of capa.The overtemperature event was not identified by the end user and was identified in a lab setting by the distributor.The device history record for (b)(4) from september of 2017 (manufacturing order (b)(4)) was reviewed and the device passed all testing.Nothing out of the ordinary was noted.The device has not been returned to nti for repair / evaluation previously.There have been no other complaints reported to nti for this device.(b)(4).
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On 1/17/2020, northgate technologies was made aware of an issue with an in-line warmer from distributor (b)(4) in (b)(4) where it was alleged, "our customer couldn't use the product and asked us to check it.During our inspection, even though the warmer connected to nebulae i, the unit didn't display any thermometer symbol.And after that, the warmer heated and smoked with no alarm.No adverse event and no delayed procedure.".
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