Medical device expiration date: unknown.Device manufacture date: unknown.Investigation summary: a 2000e china product was not available for investigation; and the lot number was not provided in this instance.The customer indicated that a complete occlusion was observed; however no further information was available to assist the investigation in this instance.The details of this feedback were forwarded to the manufacturing site for investigation.The lot number was not available and therefore it is not possible to perform a review of the production documentation for this particular product.The root cause of the customer¿s experience could not be determined as the sample was not available for investigation.In this instance, without a sample it is not possible to determine whether a manufacturing defect could have caused or contributed to the customer¿s experience.Following a small number of similar reports, bd has conducted an in-depth investigation to identify any potential contributing factors for occlusion of this nature.The investigation has determined that a potential contributor could be the result of an insufficient amount of fluorosilicone having been injected into the piston of the smartsite during the assembly process; fluorosilicone is used as a lubricant within the smartsite to ensure the consistent opening of the piston when the smartsite is activated, and an insufficient amount may cause a temporary occlusion.Additionally, previous investigations have also determined that features on the surface of the male luer of the connecting products may also contribute to occlusions of this nature.These features include flash or a raised edge to the tip of the male luer which have previously been shown to intermittently lead to restricted flow due to them pinching the blue piston of the smartsite and not allowing it to open.This can sometimes be resolved by disconnecting and reattaching the same luer connection which may reposition the luer against the piston and improve the flow, or alternatively by changing the connecting male luer.In this instance as the connecting product and affected product were not available for investigation it could not be determined which is the most likely root cause for the customer's experience in this instance.Please note, in order to minimize reports for occlusions of this nature, the manufacturing site has repaired the assembly machine to ensure that an adequate amount of fluorosilicone is injected into each smartsite.A review of the customer feedback database indicates that this is a rare occurrence with a small number of similar reports against the 2000e china product in the past 12 months.
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