One bi-directional, curve d-f, sensor enabled, advisor hd grid mapping catheter was received for evaluation.Electrodes 2, 11, and 14 read as an open circuit.In addition, the electrodes were displaced and the pellethane tubing was stretched.The device history record was reviewed to ensure that each manufacturing and inspection operation was performed.The root cause of the open circuits was unable to be confirmed; however, this is consistent with the observed paddle damage.The displaced electrodes and stretched pellethane tubing is consistent with damage during use.
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