Device broke intra-operatively and was not implanted or explanted.(b)(6).Device is not distributed in the united states, but is similar to a device marketed in the us.Product investigation summary: the investigation of the cage has shown that the input side of instrument is in multiple parts with pieces broken off.Due to this damage, and without further information pertaining to the event, the exact root cause cannot be determined.However, it is likely that a mechanical overload situation during the application led to the significant deformation / breakage of cage.Without a valid lot number for the device, a review of the device history records could not be requested.Based upon the visual inspection/evaluation, however, no product fault could be detected.Device 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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