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During use, the powerflex pro balloon catheter ruptured at ten atmospheres (10 atm) during its initial inflation.There was no patient injury.Therefore, the balloon was replaced with a new competitor's balloon catheter and the procedure was completed successfully.The lesion was the left superficial femoral artery.The lesion seemed to be heavily calcified with a high rate of stenosis.An ipsilateral approach was made with a 6f competitor's guiding sheath.A competitor's 0.035 guidewire crossed the lesion and a powerflex pro was delivered to the lesion for pre dilation.The product was not returned for analysis.A product history record (phr) review of lot 17733286 revealed no anomalies or non-conformances during the manufacturing and inspection processes that can be associated with the reported event.The reported ¿balloon burst - at/below rbp¿ could not be confirmed as the device was not returned for analysis.The exact cause could not be determined.Vessel characteristics of heavy calcification with a high rate of stenosis may have contributed to the reported event, as it is known that calcium may damage balloon material.However, without return of the product for analysis, it is difficult to draw a clinical conclusion between the device and the reported event.According to the safety information in the instructions for use ¿if resistance is met during manipulation, determine the cause of the resistance before proceeding.Balloon pressure should not exceed the rated burst pressure.The rated burst pressure is based on the results of in vitro testing.At least 99.9% of the balloons (with a 95% confidence), will not burst at or below their rated burst pressure.Use of a pressure monitoring device is recommended to prevent over pressurization.Use only the recommended balloon inflation medium.Never use air or any gaseous medium to inflate the balloon.Prior to angioplasty, the catheter should be examined to verify functionality and ensure that its size and shape are suitable for the specific procedure for which it is to be used.¿ neither the phr nor the information available suggests a design or manufacturing related cause for the reported event; therefore, no corrective/preventive action will be taken at this time.
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