The following fields were updated due to additional information: d10: device available for eval yes.D10: returned to manufacturer on: 24aug2023.Investigation summary: it was reported it is difficult to push the plunger down.To aid in the investigation, one empty sample with no packaging flow wrap or tip cap was received for evaluation by our quality team.A visual inspection was performed, and no defects or imperfections were observed.The sample was then tested for sustaining force per it287, which is the force applied to the plunger rod while moving downwards when expelling the saline solution, and the result was within specification.A device history record review was completed for provided material number 306546, lot 3047971.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.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 offered.
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