H.6.Investigation summary: two photos, one opened tip cap tray and seven fully sealed tip cap trays with a total of 395 tip caps from batch 9078938 (p/n 305822) were received and evaluated.It was observed seven of the 395 tip caps contained black embedded foreign matter particles that appeared to be burnt plastic.Three of the seven tip caps had particles larger that level 1 in size and were acceptable per product specification.Four of the seven tip caps had particles larger than level 3 in size and were rejectable per product specification.The tip caps were from the following cavities: a53, a38, a57, a2, a11, a34 and a55.Furthermore, a device history record review showed no rejected inspections or quality issues during the production of the provided lot number that could have contributed to the reported defect.Potential root cause for the embedded foreign matter defect is associated with the molding process.The embedded fm is most likely degraded plastic.This occurs when the resin is exposed to prolonged high temperatures inside the molding machine, such as during start up.Per procedure, after start up, all molded parts are scrapped until no degraded plastic is observed.If this is not performed thoroughly a piece with this condition can get through.This type of defect is cosmetic and does not pose risk to the customer.No corrective actions are necessary based on the defective rate identified.Batch 9078938 is considered in compliance with our product specification requirements.
|