One used list #146870489, primary plum set, clave secondary port, clave y-site, secure lock, 103 inch; lot #unknown was receive for evaluation.The event related to black particles inside cassette of tubing set was confirmed.An assessment was carried out in the cassette area to determine if it is possible that during the cassette assembly process, grease particles could be produced on the silicone diaphragm.The cut piece of the cassette was examined, and several black particles could be observed.This piece was disassembled, and the black particles were found to be grease.During the molding process, the tools use grease as lubricant, there is a possibility that these small particles of grease may have fallen off on the diaphragm.Lot history review was performed and no nonconformities were identified that may have contributed to the reported complaint.
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