A device history review was conducted for lot number 8117623.Our records show the reported lot was manufactured on 05/03/2018, and determined that this is the only instance of foreign matter being observed in this production batch.According to the sampling plan applied for product performance, this lot was accepted and released without defects being noted during the final assembly or visual inspections of packaged goods.Although a photo was submitted by your facility, the image proved to be insufficient for our purposes.Process (b)(4) and process (b)(4) were reviewed and there are proper controls in place to detect product malfunctions.Based on investigation results to date, root cause for manufacturing process cannot be determined.
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