|
As of today, the medical device is not available for analysis, therefore the device itself could not be investigated.The analysis is thus based on the inspection of the manufacturing documents of the device as well as on the provided data.The quality documents accompanying the manufacturing process for this device were reinvestigated.All production steps were performed accordingly, and in particular the final acceptance test proved the device functions to be as specified.The analysis of the provided trend data, acquired between 15th of april 2021 and 8th of december 2021 recorded intermittent spontaneous drops of pacing impedance from initially 700 ohms to less than or equal to 200 ohms at the end of the recording period.Furthermore, it recorded a strongly fluctuating sensing amplitude between 5.5 v and greater than or equal to 20 mv.The analysis of the provided iegm episodes revealed artifacts on the rv channel, which led to the reported oversensing as well as an inappropriate icd charging cycle.In spite of the available information, no conclusion can be drawn regarding the root cause of the clinical observation.An analysis of the lead itself would be necessary to determine the root cause.Should additional information or the device itself become available for analysis, the investigation will be updated.
|