The reported events of stylet could not be removed and insulation damage were confirmed.As received, a complete lead was returned in one piece with the stylet stuck inside the lead.Visual inspection of the lead found that the connector pin and crimp sleeve were pulled out of the connector assembly along with the inner coil which is consistent with procedural damage and the ptfe stylet coating was bunched up/clogged with the inner coil distal to the connector pin.The cause of the reported event was due to bunched up ptfe coating of the stylet inside the inner coil that prevented the removal of the stylet and excessive forces resulted in the connector pin and crimp sleeve to be pulled out of the connector assembly.Further analysis found procedural damage to the lead insulation distal to the connector boot.The cause of the reported event of insulation damage was isolated to procedural damage.
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