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The concerto implant coil was returned for analysis.The concerto implant coil was returned without the introducer sheath; therefore, any contributing factors could not be assessed.The concerto coil pushwire was found to be bent at ~5.0cm, kinked at ~15.0cm, at ~46.5cm, at ~83.0cm, bent at ~104.0cm and kinked at ~126.0cm from proximal end.The implant coil was found to be broken and not returned.Testing/analysis (including sem reports): the concerto coil tip od (outer diameter) was unable to be measured as it was broken and not returned.The id (inner diameter) of the introducer sheath was unable to be measured as it was not returned.No other anomalies were observed.Based on the device analysis and the reported information, the customer¿s report of ¿coil resistance/stuck in sheath¿ was unable to be confirmed as the implant coil was broken and introducer sheath were not returned.The root cause could not be determined.There were no reported issues pushing the concerto coil out from within its introducer sheath during preparation.Therefore, it is possible that the implant coil became damaged during return of the implant coil back into the introducer sheath.It is possible insufficient preparation of the concerto coil, damage during preparation or improper hubbing technique (over tightening of the rhv) could have contributed to the event.If information is provided in the future, a supplemental report will be issued.
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