The reported event of difficulty screwing and securing on the torque wrench on the atrial (a)and left ventricular (lv) leads was confirmed.The analysis found the torque wrench had a fractured shaft.Because of the fracture the torque wrench could not tighten the setscrews.Analysis of the torque wrench found it fractured attempting to loosen a setscrew that required more torque capability than the wrench could handle.The event description only indicates the wrench was being used to tighten the setscrews to connect the leads.How the wrench was being used before this is unknown.The analysis of the crt-p device showed that the a-, lv-, and v-setscrews tightened and loosened normally with no indications of a stuck setscrew or any mechanical problem.The torque wrench was being used beyond its capacity and was expected to fracture.No electrical anomalies were found.The battery voltage is above eri near bol.
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