It was reported that an unknown balance middleweight (bmw) guide wire was easily placed and the dragonfly opstar imaging catheter was easily advanced into the vessel via the guide wire.When attempting the first pull back of the optical coherence tomography (oct) there was slight displacement at the proximal portion of the guide wire noted.When positioning for the second pullback with the catheter further proximally in order to be able to examine the distal main trunk, there was significant dislocation [kink] of the wire proximally with a step on the wire already visible near the distal end of the wire.Advancement of the bmw was no longer possible because the wire was still far enough distally.After the third pull back was performed, the catheter could not be removed; therefore, the bmw wire and catheter were removed together with resistance.The bmw guide wire was noted to have kinked twice.The procedure was completed without further oct.There was no adverse patient effects and no clinically significant delay in the procedure.No additional information was provided.
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Visual and dimensional analysis was performed on the returned devices.The reported difficulty removing was unable to be confirmed due to the device condition.The damage to the dragonfly catheter was confirmed and consistent with the reported difficult to remove.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.The investigation determined that the difficulties were likely related to circumstances of the procedure.It is likely that the reduced clearance between the inner diameter of the catheter lumen and the outer diameter of the guide wire caused the resistance.Furthermore, while attempting to reposition the device against resistance caused by the bent shaping ribbon and core, the guide wire exit port was stretched and torn.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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