The reported event of twisted insulation was not confirmed, while the reported event of helix mechanism issue was confirmed.As received, a complete lead was returned in one piece with the helix extended and clogged with blood/tissue.After cleaning and applying torque directly to the connector pin, the helix was able to retract and extend.The cause of the reported event of helix mechanism issue was due to the helix clogged with blood/tissue.Electrical, visual, and x-ray examination were normal with no anomalies found.
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