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(b)(4).A review of the device history record has been completed.No deviations or non-conformances noted.Device evaluation: analysis of the returned device identified: underweight, broken shell and missing shell.A visual and microscopic analysis was performed which identified: sharp broken on radius.A dimension measurement in the shell was performed which identify the thickness within specification.Based on the device analysis the final assessment is sharp broken on radius assessed as an unidentified (tear) opening, and a missing shell assessed as inconclusive.Further information from the reporter regarding event, product, or patient details has been requested.No additional information is available at this time.Reason for reoperation: rupture.
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