The suspect medical device was not returned to the manufacturer for evaluation/investigation but to olympus shanghai (osh), (received at osh on (b)(6) 2022).The evaluation at osh confirmed the occurrence of both error message e090 and error message e091 and traced these back to a defective generator board.Thus, the reported event/incident can be attributed to component failure.Any error messages that may appear during operation are triggered by the safety system of the esg-400 and communicated visually and acoustically to the user.They are part of the device's own security concept.In particularly critical cases, further use of the device is prevented by the security system until the error has been corrected.A material or quality problem can be excluded since a manufacturing and quality control review was performed for the affected serial number of the hf-generator without showing any abnormalities.The case will be closed on olympus side with no further actions.The reported event/incident will be recorded for trending and surveillance purposes and the user will be informed about the investigation results.Please note: this report is being submitted although the suspect medical device is not marketed in the usa.However, a similar device is marketed.Model # / catalog #: wb91051w; brand name: electrosurgical generator "esg-400"; common device name: hf-generators; 510(k): k203682; product code: gei.
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