Visual examination of the returned nephromax balloon dilatation catheter revealed there was a longitudinal tear in the balloon material.The tear was located at 1.5cm proximal to the proximal edge of the distal markerband and it extended proximally for a total length of 2cm.An examination of the balloon material identified no issues which could potentially have contributed to the tear.Therefore, the condition of the returned device confirms the reported.Based on all gathered information, the most probable root cause classification is operational context.
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It was reported to boston scientific corporation that a nephromax balloon dilatation catheter was used during a percutaneous nephrolithotomy procedure performed on (b)(6) 2015.According to the complainant, during the procedure, the balloon ruptured at 14 atm while it was inflated inside the patient.The procedure was completed with a different balloon dilatation catheter.There were no patient complications reported as a result of this event.The patient condition at the conclusion of the procedure was reported to be stable.Note: this event has been deemed an mdr-reportable event based on investigation results which revealed that the balloon was torn longitudinally.
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