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The device was returned for analysis.The reported difficulties deflating the balloon was unable to be confirmed.The reported difficulty removing the device from the anatomy could not be replicated in a testing environment as they are based on operational circumstances.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.The investigation was unable to determine a conclusive cause for the reported deflation problem as no issue was identified during return device analysis.The reported difficulty to remove the device appears to be related to operational context of the procedure as it is likely the partially inflated balloon interacted with the guiding catheter.It was reported that the balloon of the 4.50x28 mm xience skypoint stent delivery system (sds) was inflated once at 18 atmospheres for 40 seconds.Negative pressure was held for the entire removal.The balloon met resistance during removal and was removed partially deflated with the non-abbott guide catheter extension.It should be noted that the xience skypoint everolimus eluting coronary stent system instruction for use (ifu), 1.0 device description the rated burst pressure (rbp) should be 16 atmospheres, section 10.0 precautions it states, ¿do not exceed the rated burst pressure (brp) as indicated in the product label.¿ additionally, per ifu section 10.4 stent /system removal: if during withdrawal of the catheter from the deployed stent, resistance is met steps need to be taken to improve balloon rewrap.The balloon needs to be re-inflated to nominal pressure, deflate and change the pressure to neutral.Per the account the balloon was inflated only once.In this case, it is unknown if the reported ifu violations caused or contributed to the reported complaint.There is no indication of a product quality issue with respect to manufacture, design or labeling.
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