(b)(4).The customer provided one photo for analysis.The image shows a small crack in the arterial hub.The customer also returned one connector assembly from a hemodialysis kit for evaluation.Signs of use in the form of biological material were observed.Visual analysis revealed that the arterial luer hub contained a crack on the threads.In addition, a small fragment from the threads was partially separated from the luer hub.Microscopic examination confirmed the damage.The appearance of this damage is consistent with over-tightening on the hubs.A lab inventory syringe filled with water was attached to the extension lines and flushed.When flushing the arterial line, water was observed leaking out of the crack on the threads.A device history record review was performed, and no relevant findings were identified.The ifu provided with the kit informs the user, "repeated over tightening of bloodlines , syringes and caps will reduce connector life and could lead to potential connector failure".The report of a cracked luer hub was confirmed through complaint investigation.Visual analysis revealed that the arterial luer hub contained a crack on the threads.The appearance of the damage is consistent with overtightening or repeated tightening of the hub.Functional testing revealed that water leaked from the crack when flushing.A device history record review was performed, and no relevant findings were identified.Based on the customer report and the sample received, unintentional use error likely caused or contributed to this event.Teleflex will continue to monitor and trend for reports of this nature.Date of event corrected to 02-jun-2023.
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