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This case was reviewed and investigated according to the manufacturer's policy.It was reported during a planned diagnostic coronary procedure, inside the body, before normalization, the user tried to fix the manufacturer's device at (the) usual position in the connector but it could not be caught.The device was reconnected but the problem was not solved.Additional information was provided, the device had been inspected prior to the procedure with no visible defects observed.Post procedure, the device was observed to have damage at the connection to the connector.Reportedly, no portions of the device separated or detached within the patient.A second of the same make and model of the manufacturer's device was used to successfully complete the procedure.There was no patient injury and no adverse event.Visual and microscopic inspection were performed on the returned device.The proximal conductive band and its locking core were separated and missing.The probable cause of the reported failure was damaged during use, as evidenced by the missing proximal conductive band and locking core.Manipulation and strain on the device can cause damage to components and result in the reported failure.We were unable to conclusively determine when and how the damage occurred.The instructions for use (ifu) warns, "do not flex the proximal (electrical connector) end of the device when not inserted in the connector.Excessive flexing can damage or break the internal components".The manufacturing documentation for this device was reviewed and the device met all quality and manufacturing release criteria this event is being reported as there is a potential for harm if the malfunction were to recur.
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