Visual and dimensional analysis was performed on the returned devices.The reported difficulty removing was unable to be confirmed as the dragonfly was able to be advanced through a proxy guide wire with no resistance noted.The dragonfly was noted to be stretched distally 2.2 cm from the distal tip.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.Additionally, a review of the complaint history identified no other similar complaints reported from this lot.Based on the information received and analysis of the returned device, the investigation was unable to determine a cause for the reported difficulties.It may be possible that, during the procedure, the guide wire was inadvertently bent/damaged.Furthermore, it may be possible that damaged guidewire caused the dragonfly to become inadvertently caught.The noted stretching suggests that the guidewire and catheter were likely spread apart during removal.However, this could not be confirmed.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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