A review of four stopcock assemblies found severe damage/cracks to the luers which would result in leakage, confirming the complaint.Root cause investigation found no discrepancies with the molding process or the annealing process which could be factors in the failure observed.Additional testing was conducted on in-house parts, pre and post anneal process, and the damage/cracks could not be duplicated.The cause of the damage/cracks may possibly be related to the type of substance used to wipe the product or that was injected through the product.The ifu warns, ¿do not use patient monitoring products with parenteral nutritional solutions containing lipids or nitroglycerin.These substances are known to degrade some medical plastics resulting in cracks and/or leaks.Other drugs or solutions may have similar effects¿.The user facility has not responded to requests for additional information to confirm if incompatible substances were used on the product.
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