Follow up with the customer clarified that the healthcare worker (hcw) experienced a burning sensation from his wrist to elbow after having opened the door to the unit and stated that contact with h2o2 did not occur from handling the cassette.Asp investigation summary: the investigation included a review of the device history record (dhr), trending of lot number, system risk analysis (sra), concomitant product evaluation, and review of instruction for use (ifu).Method: actual device not evaluated.Result: no results available since no evaluation performed.Dhr could not be performed without lot number provided.Trending of the lot could not be performed without lot number provided.The sra indicates the risk associated with hazard of 'exposure to toxic or corrosive material 'is "low." the product was not returned for evaluation.A field service engineer (fse) was dispatched to the site and resolved h2o2 delivery failure/area too low and noise by adjusting the cassette carriage and by inserting a new cassette.The unit successfully completed a test plan after the repairs were performed.The user stated that contact with h2o2 did not occur during handling of the cassette.As a precaution, the instructions for use of the cassette were reviewed and found to be adequate to address the event of h2o2 contact while handling a cassette, "caution: wear personal protective equipment if handling a used cassette, or any of the cassette case components that may have been subject to a liquid leak.This includes a cassette that has been ejected (for any reason) after insertion." in this case, contact with hydrogen peroxide did not result in permanent impairment or intervention required.The user believes the burning sensation occurred during troubleshooting of the unit, however, it remains uncertain how h2o2 contact occurred.The issue will continue to be tracked.Without lot number provided and additional information, further investigation could not be performed.A definitive assignable cause could not be determined.
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