The device was not returned for evaluation.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 incidents and/or complaints from this lot.The investigation was unable to determine a conclusive cause for the reported failure to deflate.However, factors that may contribute to difficulty deflating the balloon may include, but are not limited to, deflation technique, contrast concentration, tortuous anatomy, loose connection with the indeflator, contamination in the inflation lumen or damage to the guide wire and/or inflation lumen.The reported separation, additional treatment and removal of foreign body appear to be related to circumstances of the procedure as the shaft separated since the balloon remained inflated during attempts to remove the device.Additional treatment was performed in an attempt to retrieve the balloon via lasso, the balloon was intentionally crushed with the lasso and thus partially deflated and ultimately retrieved through the left radial artery.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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It was reported that the procedure was to treat a left anterior descending artery (lad) with a kissing technique.A 2.5x23mm xience stent was in the diagonal artery and a 4x15mm trek balloon was in the lad.There was no resistance when advancing both devices in the non-abbott guiding catheter.The stent was implanted without issue and the stent delivery system was removed.The trek balloon was inflated once at nominal pressure without issue.However, after the kissing technique was used, the trek balloon completely failed to deflate.The balloon remained inflated at the distal part of the guiding catheter and when pulling it in the shaft separated.In an attempt to retrieve the balloon via lasso, the balloon was intentionally crushed with the lasso and thus partially deflated and ultimately retrieved through the left radial artery.There were no adverse patient effects and no clinically significant delay.No additional information was provided.
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