The complainant was unable to report the lot number; therefore the manufacture date and expiration date are unknown.However, the complainant stated that the device was used prior to the expiration date.(b)(4) wire broke.Visual evaluation of the returned device showed that there were multiple kinks in the working length.The entire length of the guide wire rx channel was torn, and the ro marker was missing from the distal tip of the device.Functional evaluation found the brush would not extend.The device was disassembled and the pull wire at the distal end of the handle hypotube was found to be broken.The event was most likely caused by some operational or anatomical aspect of the procedure which restricted the pull wire¿s ability to move freely within the catheter.Attempts to extend and retract the brush with pull wire movement restricted resulted in the broken pull wire.Therefore, the most probably root cause for this event is determined to be operational context.
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