(b)(4).The device history record (dhr) for the dermatome hose, part number 00880100200 and serial number (b)(6), review by de-soutter medical limited noted no related non-conformances, requests for deviation (rfd), change notices (cn), or any other issues with manufacturing.The dhr review found no issues with the device and all verifications, inspections, and tests were successfully completed.On (b)(6) 2019, it was reported from kantonsspital graubünden that a dermatome hose exploded intraoperatively.On (b)(6)2019, a returned product investigation was performed on the dermatome hose.The physical evaluation revealed that the inner hose had blown apart at the connector.The results of the returned product investigation have confirmed the reported event.While the returned product investigation confirmed that the dermatome hose came apart at the connector, it cannot be determined from the information provided what actually caused the reported event.Therefore, based on the information provided, a specific root cause of the reported event cannot be determined.The investigation was based on the information that was provided initially and any information that was obtained throughout the follow-up process.
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