One inquiry steerable diagnostic catheter was received for evaluation.Slight bends were noted throughout the catheter shaft.Electrode bands 3 and 4 were displaced from the catheter shaft, and had moved distal to weld joints 3 and 4.Electrode bands 5 and 6 were misshapen.Electrodes 3 and 4 read as an open circuit during electrical testing.In addition, electrode rings 3 and 4 were distally displaced.The conductor wires for electrodes 3 and 4 had fractured at the weld joints of the electrode rings, consistent with the open circuits detected, the reported signal issue, and the displaced electrode rings.The device history record was reviewed to ensure that each manufacturing and inspection operation was performed.The cause of the fractured conductor wires is consistent with damage during use.The displaced electrodes is consistent with manipulation of the catheter during use with an introducer sheath.
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