After pullback was performed during an optical coherence tomography (oct) procedure, the catheter was found to be leaking.While the device was inside the patient's anatomy, a contrast leak was noticed from a hole where the small tube connected to the catheter.It was difficult to get contrast out of the distal tip due to the leak.A large syringe was used but the issue persisted.The procedure was completed without oct with no adverse consequences to the patient.
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One dragonfly optis imaging catheter was received for evaluation.The results of the investigation concluded that a leak was noted at the proximal seal of the x-ring retainer.Further investigation revealed that the seal was damaged, resulting in a deformation on the seal, from which a leak was noted.It was also noted that the syringe was exchanged for a larger syringe during the procedure.The ifu instructs the user to ¿use a 3 ml syringe and purge until 3-5 drops exit from the purge exit.Do not remove this syringe from the catheter purge port.¿ additionally, the catheter goes through a 200% inspection process for leaks and damages, ensuring the defect and subsequent leak were not present at the time of manufacturing.The device history record was reviewed to ensure that each manufacturing and inspection operation was performed.Based on the information provided, a conclusive cause for the reported difficulties could not be determined.
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