The device history records have been reviewed and this lot met all release criteria.There was nothing found to indicate there was a manufacturing related cause for this event.This is the only complaint reported to date for this lot number and failure mode.One crosser s6 catheter was returned for evaluation.The distal tip was not in alignment with the proximal segment of the catheter.The core wire was fractured near the distal tip.A partial circumferential break was identified approximately 0.4cm from the distal tip.Therefore, the investigation is confirmed for an outer catheter break and a fractured corewire.As functional testing could not be performed, the investigation is inconclusive for device-device incompatibility.It is possible that additional force was applied in an attempt to advance the crosser catheter through the usher support catheter which may have caused the fractured corewire and outer catheter break.The definitive root cause could not be determined based on the available information.The review of the ifu (instructions for use), indications, warnings, precautions, cautions, possible complications, and contraindications showed that the product labeling is adequate.(b)(4).(expiry date: 12/2019).
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