(b)(4).Investigation summary: a device history record review was performed for provided lot number 223825.The review did not reveal any detected quality issues during the production process that could have contributed to this reported incident.To aid in the investigation of this incident, four samples were received for evaluation by our quality team.The samples came with no saline solution and with the plunger rod- rubber stopper all the way down.A visual inspection was performed and no defects or imperfections were observed.Then, each sample was tested for sustaining force and the results were within specification.Investigation conclusion: based on the investigation and with the sample analysis the symptom reported by the customer could not be confirmed.Root cause description: the cause for this defect could have resulted if the customer noticed that more than usual force was required to expel the solution, as one of the samples force result was towards the high specification limit.Rationale: further action has not been determined necessary at this time.Our quality team will continue to monitor the manufacturing process for this defect and other emerging trends.
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It was reported that the bd posiflush¿ normal saline syringe plunger was difficult to push after "5 ml" had been injected.The following information was provided by the initial reporter: "10 ml 0.9% saline syringes become very difficult to push after 5 ml has been injected.Initially, we thought it was an iv issue, but we have had several syringes from the same lot that we've had an issue with.It has been reported this has happened on multiple occasions and it has happened with flushes from different boxes.The first few times it was thought to be an iv issue.Iv tubing information: they use bd saf-t-intimas but we have had this issue with patients that have angiocaths as well".
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