It was reported that while attempting to treat a severe calcified lesion in btk vessel using an amphirion plus device, the physician noted the balloon ruptured during the first inflation at 6 atm immediate after starting inflation on the first inflation.Slight resistance was experienced when the device was delivered to the lesion.After the event, the device was withdrawn safely and the procedure was completed using other device.The device was prepared following the ifu and no abnormalities noted.No patient injury was reported for this event.Device return: during the technical investigation the returned sample was visually inspected.There is no evidence of dirt or clotted blood all along the device.Catheter hub, shaft tube and balloon portion (including also the device tip) do not show any damage.Balloon appears unfolded.A 0.014'' guide wire was inserted in the guide wire lumen without resistance.The balloon was inflated with water using a manometric syringe at 10atm but it could not hold the pressure and a pinhole was detected on the distal portion of the balloon.The balloon was inflated with air to detect the location of the pinhole.The pinhole was around 0.3mm long and located on the balloon distal neck not involved in the distal balloon welding with the guide wire tube (tip).
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