Examination and functional testing of the returned device was unable to confirm the reported event.The returned pin puller was functionally tested with a depuy retained pin and found the grab, hold and secure the pin as intended.Although a surgical environment could not be replicated, the device performed as intended.The investigation could not verify or identify any product contribution to the reported event with the information provided as the returned device functioned as intended.Based on the inability to identify root cause, the need for corrective action was not indicated.Continue to monitor via (b)(4).Depuy considers the investigation closed at this time.Should the additional information be received, the information will be reviewed and the investigation will be re-opened as necessary.
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