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Upon receipt, the lead under complaint was subjected to an extensive analysis.The performance of the lead was scrutinized, including a visual, mechanical and electrical inspection.The analysis revealed cuts into the insulation 34.5 cm distal to the is4 connector pin and a bent conductor coil 59 and 65 cm distal to the is4 connector pin, these damages most likely resulted from the explantation procedure.However, a thorough analysis of the lead did not show any deviations which might have led to the reported dislodgement.The lead tip did not show any anomalies.Prior to the analysis of the device, the quality documents accompanying the manufacturing process for this device were re-investigated.All production steps were performed accordingly, and in particular the final acceptance test proved the device functions to be as specified.In conclusion, the analysis did not reveal any sign of a material or manufacturing problem.
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