Lot number was previously unknown, but later identified with the returned product.Lot number is 64983625.A device history record review was completed and documented that device met all specifications upon distribution.Per additional information from the sales rep, the catheter was used for rapid pacing.A product evaluation was completed.The reported event of pacing issue was confirmed.Continuity testing found that a short condition occurred between the proximal and distal circuits in the y adaptor.No open or short condition was observed in the leadwires between distal side of y adaptor and the electrodes.No visible damage was observed from catheter body, balloon, and windings.The balloon inflated clear and concentric and remained inflated for 5min.Without leakage.An engineering evaluation was initiated to assess for any manufacturing related processes which could be correlated to the complaint.A product risk assessment was generated to cover the short condition at the y adaptor between proximal and distal lead wires for the bipolar pacing catheters for products nonconformance with moderate, major, or critical severity.The most probable root cause is related to a manufacturing defect.Complaint histories for all reported events are reviewed against trending control limits on a monthly basis and any excursions above the control limits are assessed and documented as a part of the monthly review.
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