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No patient involvement was reported.Device is an instrument and is not implanted/explanted.(b)(6).Dhr review, part number: 399.36 lot number: a7oa47), date of manufacture: dec 01, 2005, place of manufacture: (b)(6).Description of dhr review: a review of the device history record from the manufacturing site (b)(6) showed that there were no issues at the time of manufacturing of this device that would contribute to the issue outlined in this complaint.A review of inspection records and certifications confirm that the components and final product met inspection records and certification.All 200 parts of the lot were checked 100% for important features and for function at the final inspection on (b)(6) 2005 and found to be conforming.Customer quality conducted an investigation of the returned device.The returned instrument (part 399.36, lot a7oa47, mfg dec 01, 2005) was inspected at customer quality and the complaint was confirmed.The instrument was returned with a crack migrating out from the dowel pin in the phenolic handle.Whether this complaint could be replicated is not applicable because the device was returned cracked.Investigation methods/evaluation results.A visual inspection, drawing and device history record review were performed as part of this investigation.Material and hardness testing is not applicable at this time as they were tested at the time of manufactured and confirmed to have no issues through the dhr review.Dimensional analysis is not applicable at this time as the dowel pin is deformed due to the manufacturing process.Upon visual inspection, it was noted that the phenolic handle had a crack migrating out of from the dowel pin.The crack measured 26.71 mm long.Additionally, there was staining noted on the metal shaft and dowel pin.Drawing was reviewed and were determined to be suitable for the intended design, application and dimensional conformity when used as recommended.A review of the device history record from the manufacturing site (b)(6) showed that there were no issues at the time of manufacturing of this device that would contribute to the issue outlined in this complaint.During the investigation, no product design issues or discrepancies were observed that may have contributed to the complaint condition therefor no further corrective and preventive actions are proposed.Device was used for treatment, not diagnosis.If information is obtained that was not available for the initial medwatch, a follow-up medwatch will be filed as appropriate.
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