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The device is not available for analysis; therefore, no physical or visual analysis of the product could be performed.A device history record (dhr) review was performed and confirmed that the device met all manufacturing specifications, and therefore the failure was unlikely related to manufacturing.A risk review was completed and confirmed that the event of fiber break was defined in the risk documentation.This event type has been accounted for during product risk analysis to support acceptable risk benefit for the product.A labeling review was performed on the device instructions for use (ifu).The ifu states to carefully inspect the fiber for kinks, punctures, fractures or other damage.If the fiber appears damaged, do not use the device.Return it to the manufacturer for a replacement.There is no indication that the device was not used in accordance with the ifu.Based on all the available information, the reported event of the fiber breaking could not be confirmed.Therefore, the conclusion code of cause not established has been assigned to this investigation.
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