(b)(4).The device history record (dhr) for 00515048200 lot number z000011421, review 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) 2018, it was reported from (b)(6) that 1 out of 10 pulsavac ac kits were melted inside the package.On (b)(6) 2019, a returned product investigation was performed on the 00515048200.The physical evaluation revealed that the device had a battery pack that had ruptured inside of the packaging.The results of the returned product investigation have confirmed the reported event.While the returned product investigation confirmed that the 00515048200 had a ruptured battery inside of the sterile tray, 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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