Investigation: dhr review: release date: (b)(6) 2017.Released quantity was 428,400.All visual inspections were performed as per requirement with no quality notifications related to the complaint defect.Batch 7339675 was inspected and accepted based on meeting our inspection control plan and subsequently approved for shipment.Sample evaluation: three photos and two plastic bags containing a total of 114 loose 10ml syringes were received and evaluated.All samples were visually inspected, and the following defects were rejectable per product specification: 6 with plunger rod or barrel damage, 1 with missing print defect, 2 with ink foreign matter, and 6 with burnt plastic embedded foreign matter.The embedded foreign matter samples were from the following: mold c-187 cavity 20, mold c-189 cavity 27, mold c-10 cavity 24, mold c-197 cavity 18,mold c-189 cavity 31, mold c-189 cavity 29.The remaining 99 samples were observed to have cosmetic defects with no effect to the form fit or function of the device and all scale markings containing more than 50% of the intended print and were acceptable per product specification.Root cause: potential root cause for the damaged barrel and plunger rod defect is associated with the assembly process.The plunger rods were most likely damaged due to a broken component directly involved with transferring plunger rods from one dial to another.This could cause the plunger rods to become caught in the dials and becoming damaged.The damaged barrel flange is most likely due to a rail jam.The barrels are fed in a single file, if too many enter the rail at once damaged can occur.Potential root cause for the missing print defect is associated with the assembly process.There is a scuff mark present in the location of the missing print indicating this was most likely caused by the rail jam mentioned above.Potential root cause for the ink foreign matter defect is associated with the marking process.They appear to be contact smears which is most likely caused barrels making contact on the conveyor belt shortly after they were printed.Potential root cause for the embedded foreign 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.
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