Investigation: a total of (b)(4) units were built on afa line 18 and packaged on packaging line 8 starting on mar 8, 2017 through mar 14, 2017.Per review of the dhr it was concluded that all required challenges samples and testing was performed per specification in accordance with the set-up and in process sampling plans.Per review it was noted that there were no reject activity findings throughout the build of this lot that would impact upon the quality of the product.Set-up and in process samples (including but not limited to) for damaged component (grip, button, spring, hub), needle retraction by button activation and barrel un-seated-cracked) were performed on various stages throughout the process, all the inspections passed per specifications.No significant discoveries were found.Received one used iag 18ga unit and an empty/open package from lot number 7059836, the unit consisted of a safety barrel/needle assembly and a needle cover.The unit was received with the needle partially retracted into the safety barrel.Damage (cracks, stress marks) was observed on the safety barrel.The cannula was pushed into the out position, the cannula was not bented, scratched or pinched and there was no visible damage on the hub or the spring.Retraction was not successful; the damage found on the safety barrel prevented the needle/hub assembly from fully retracting.There was damage (cracks, stress marks) observed on the safety barrel of the unit returned for evaluation.The failure of needle retraction failure was confirmed with evaluation performed on the unit received for evaluation.The needle retraction failure described in the incident report was potentially caused by the damage (cracks, stress marks) found on the safety barrel.The unit received had been used; consequently it is unknown where this damage occurred (manufacturing/user/transit).
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