The following were reviewed as part of this investigation: patient severity, trend analysis, applicable previous investigation(s), sample (if available), and applicable fmea documents.Based on a review of this information, the following was concluded: the complaint of detached intraosseous needle stylet magnets was confirmed; however, the root cause was not identified.The product returned for evaluation was one photograph depicting an intraosseous needle.The stylet magnet was in place on the depicted device.Also visible were two loose stylet magnets.The magnets appeared to have become detached from two different stylet assemblies.While detached magnets were observed in the submitted photograph, inspection of the photograph was insufficient to identify the cause.Consequently this complaint is confirmed as ¿cause unknown¿ at this time.Potential contributing factors include insufficient adhesive application and insufficient adhesive curing during device assembly.A lot history review (lhr) review is not possible, as no manufacturing lot number has been provided by the complainant.
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