The lot number is unknown for this complaint.The following are potential lot numbers and expiration dates for the reported product code: (sg3+2051) (1) 150102c - 12/31/2019 (2) 160408c - 03/31/2021 (3) 160603c - 05/31/2021 and (4) 141230c - 11/30/2019.The actual device was not returned to the manufacturing facility.Therefore, the investigation was based upon evaluation of the user facility information, and retention samples of the potential involved product/lot number combination.Retention samples revealed no defects.We have in-process inspection for visual, sensory test and functional test to assure quality performance of assembled sg3 needle.Prior shipment, qc conducts outgoing inspection to assure lots are in good quality.Without the return of the actual device the exact cause cannot be definitely determined based on the available information.(b)(4).
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