Device expiration date: unknown.Device manufacture date: unknown.(b)(4).Investigation summary: as the lot provided for this complaint is 'unknown,' a device history record review could not be completed.To aid in the investigation, one photo was provided for evaluation by our quality team.The photo shows a syringe with a red solution in it.The area of the rubber stopper has a hand drawn yellow circle.From the photo there is no solution that has past the rubber stopper or is it possible to observe any solution between the rubber stopper ribs.Based on the investigation results, the sample received did not show the symptom reported by the customer and an exact cause for this incident could not be identified.There are quality controls currently in place to detect this type of defect during the production process.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.Investigation conclusion: based on the investigation and with the photo sample analysis the symptom reported by the customer could not be confirmed.We will continue monitoring the complaint trend for this product and symptom.Probable root cause is unknown.
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