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The device was returned for analysis.The reported failure to fold (bunched) was confirmed.The reported difficulty to remove could not be confirmed due to the condition the device was returned for analysis.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 incidents from this lot.Return analysis confirmed that the balloon was bunched on the distal end of the balloon.In this case, it is possible that deflation technique contributed to the noted flat appearance and balloon bunching at the distal end of the balloon giving the impression of a distorted (damaged) balloon.Additionally, it should be noted that the coronary dilatation catheters (cdc), nc trek rx, global, instruction for use (ifu, precaution section) states: with 4.5 mm and 5.0 mm balloon dilatation catheters, some increased resistance may be noted upon insertion or withdrawal into or out of the guiding catheter.In this case, it is possible that the combination of the larger profile of the 4.50 mm balloon and the bunching of the balloon contributed to the resistance met with the guiding catheter, resulting in the difficulty removing the bdc.Based on the information reviewed, there is no indication of a product quality issue with respect to manufacture, design or labeling.
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