The following fields were updated due to additional information: d10: device available for eval yes, d10: returned to manufacturer on: 18-sep-2023.H6: investigation summary: it was reported the plunger is difficult to move.To aid in the investigation, two empty samples with no packaging flow wrap, or tip cap, and one photo was received for evaluation by our quality team.A visual inspection was performed, and no defects or imperfections were observed.Each sample was then tested for sustaining force, which is the force applied to the plunger rod while moving downwards when expelling the saline solution, and all results were within specification.The photo provided shows one of the samples received.A device history record review was completed for provided material number 306546, lot 3090870.The review did not reveal any detected quality issues during the production of this lot that could have contributed to the reported defect.There were no related quality notifications.All processes and final inspections complied with specification requirements.To date, there have been no other similar events reported for this lot.Based on the investigation and with the returned sample analysis the symptom reported by the customer could not be confirmed and a probable root cause could not be determined.
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