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It was reported that the procedure was performed to treat a target lesion in the severely stenosed left brachial vein.The 7.0 x 80 mm armada 35 dilatation catheter was advanced to the target lesion.The balloon was inflated without issue; however, it could not be deflated.The physician connected two different indeflators, but was unable to deflate the balloon.A 20 cc syringe was then attached, but the balloon could still not be deflated.The physician then administered 3000 units of heparin and administered lidocaine at the region.An 18 gauge needle was then used, through the skin, to puncture the balloon.The balloon was then able to deflate and was removed.A second armada dilatation catheter was then used to complete the dilatation.There was no adverse patient sequela and the patient was doing well post procedure.There was no clinically significant delay.No additional information was provided.
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Visual, dimensional, and functional inspections were performed on the returned balloon dilatation catheter (bdc).The reported deflation issue was unable to be confirmed due to the puncture on the balloon.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 and/or complaints reported from this lot.Possible factors that may contribute to deflation failure or slow deflation of the device may include, but not limited to, manufacturing damage, deflation technique, anatomical conditions/patient anatomical morphology, contrast mixing/dilution, bends, or kinks of the shaft while inside the anatomy affecting the inflation/deflation lumen and/or stretched outer member thereby reducing the deflation lumen or constricting contrast flow.The investigation was unable to determine a conclusive cause for the reported deflation issue.In this case it is possible that the challenging anatomical conditions restricted contrast flow resulting in the reported failure to deflate; however, this could not be confirmed.Additionally, the treatment appears to be related to the operational context of the procedure as the physician administered heparin, lidocaine and an 18-gauge needle was used through the skin, to puncture the balloon.There is no indication of a product quality issue with respect to manufacture, design, or labeling.
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