H6: investigation summary it was reported the rubber stopper inside the syringe does not move easily against the plastic, so it is difficult to flush the syringe.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, which is the force applied to the plunger rod while moving downwards when expelling the saline solution, per it287and the result was within specification.A device history record review was completed for provided material number 306546, lot 2227032.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 determined.H3 other text : see h10.
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