(b)(4).Investigation summary: a device history record review was completed for provided material number 306575 and lot number 0315224.The review did not reveal any detected quality issues during the production process that could have contributed to this reported defect.To aid in the investigation, two samples were received for evaluation by our quality team.The samples came in a plastic bag with no packaging flow wrap, or tip cap and the plunger rod - rubber stopper is at 3.5ml of the scale marking.A visual inspection was performed and no defects or imperfections were observed.Each sample was then tested for sustaining force and all results were within specification.Based on the investigation results, the samples received did not show the symptom reported by the customer and an exact cause for this incident could not be identified.Further action has not been determined necessary at this time.Complaints received for this device and reported condition will continue to be tracked and trended.Our quality team regularly reviews the collected data for identification of emerging trends.
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