The device was not 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.The investigation was unable to determine a conclusive cause for the reported deflation problem.A conclusive cause for the reported patient effect(s), and the relationship to the product, if any, cannot be determined.There is no indication of a product quality issue with respect to manufacture, design or labeling.The xience proa device is currently not commercially available in the us; however, it is similar to a device sold in the us.
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It was reported that the procedure was to treat a de novo lesion in the left circumflex artery (lcx) with 78% stenosis.A 2.5x33mm xience proa stent delivery system (sds) was advanced and the balloon inflated to 11 atmospheres.The stent was successfully implanted; however, the balloon of the sds failed to deflate as expected and st-elevation was noted on the electrocardiogram (ecg).The balloon of the sds ultimately deflated slowly once negative was held on the indeflator and the balloon was able to be removed.The st-elevation spontaneously resolved once the balloon was removed from the anatomy.Once outside the patient the balloon was re-inflated; however, deflated slowly again.There were no adverse patient sequela and no reported clinically significant delay in the procedure.No additional information was provided.
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