Hospital instructed that chamber be taken out of service.On (b)(6) 2018, the hospital assigned an independent technician (b)(6) with (b)(4) to inspect the chamber and the chamber was found to meet specification.On august 27, 2018 (b)(4) with sechrist industries, the chamber was tested and performed to manufacturer specifications.A dhr (device history record) review was performed.The chamber, serial number (b)(4), was manufactured on 07/01/2011.There is no indication that there were any relevant discrepancies during manufacturing.A review of the device history record (dhr) found no nonconformance that could cause or contribute to the reported issue.
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