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(b)(4).Evaluation summary: a visual inspection was performed on the returned device.The reported detachment of the device (shaft separation) was confirmed.The investigation was unable to determine a conclusive cause for the reported shaft detachment.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.Additionally, a review of the complaint history identified no other incidents.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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