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The following fields were updated due to additional information: d.9.Device available for eval?: yes.D.9.Returned to manufacturer on: 29-mar-2022.H.6.Investigation: two photos, one sample with open packaging, and five representative samples were received by our quality team for evaluation.From the photos, an oily liquid was observed inside the syringe barrel.The six samples were subjected to visual inspection to check for foreign matter inside the barrel.All samples were observed with excessive lubricant on the 1ml plunger instead of inside the barrel.A review of the internal manufacturing device records and raw material history files for the reported lot number was performed and no recorded quality problems or rejections to this incident were found.There were no abnormalities observed during the production of the affected batches.The packaging line was reviewed and there is no lubricant (silicone) used at the line.The 1ml syringe part is manufactured from bd canaan.The quality team at bd canaan has performed a supplemental investigation on this nonconformance.The team visually evaluated the samples, and each sample was observed to have a sticky substance outside of the fluid path, on the flange, and coated on the plunger.The substance observed appeared to be a silicone lubricant used in the assembly process.The inspection procedures, production records and technician logs were reviewed, the process engineer was interviewed, and an in-depth machine evaluation was performed as part of this investigation.No issues around the silicone system were noted in the production records or the technician logs.The silicone gun on the machine was observed to have excessive play.The ideal set-up is a gun held to the backing plate of the assembly dial.At the time of the review, the gun was able to slide laterally about a quarter of an inch.It was also observed that the silicone gun purge function was directly accessible on the human-machine interface that operators handle daily.This function expels air and silicone from the gun and its associated hose.This is a function that should only be accessible to authorized technicians as misuse can lead to quality issues around siliconization, especially if machine dials are not cleaned post purging, or removed prior to purging.The adjustment procedure for the silicone system also did not capture post-adjustment qualifications for the silicone gun purge function.Ensuring the assembly system is clean of excess lubricant is essential in ensuring quality product post purge.A trial was performed on the machine to replicate the defect.It was noted that the machine would run while the gun was in a purge state.Additionally, it was found that after purging the silicone gun and not properly cleaning the machine dials before returning to production the complaint defect would occur.The potential root causes for the excessive silicone defect were determined to be improper positioning of the silicone gun leading to overspray on the barrel flanges and the machine dial, excessive silicone presence due to the misuse of the silicone gun purge function, inadequate capture and confliction in inspection procedures for silicone outside of the fluid path, and improper adjustment requirements for silicone purge function.H3 other text : see h.10.
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