This event has been recorded by zimmer biomet under (b)(4).On april 20, 2018, it was reported that the device was spontaneously decompressing at times and it was alarming.The customer returned an a.T.S.1200 tourniquet device, serial number (b)(4), for evaluation.The device history record (dhr) review noted no related non-conformances, requests for deviation, change notices or any other issues with manufacturing or with the device.The dhr review also found that all verifications, inspections and tests were successfully completed.Zimmer biomet australia has not previously repaired/evaluated a.T.S.1200 tourniquet serial number (b)(4) as documented in the repair reports in livelink.Product review of the a.T.S.1200 tourniquet by zimmer biomet australia on april 20, 2018 revealed that the device was occluding on the second channel.The inflate valves were found to be turned around (photo taken).The valves are to be put in the correct position.With the valves in the correct position no occlusion errors were present.The decompression problem as reported was not observed.The battery also needed replaced.Repair of the a.T.S.1200 tourniquet was performed by zimmer biomet australia on april 20, 2018 which included replacement of the battery and placing the valves in the correct position.A.T.S.1200 tourniquet, serial number (b)(4), was then tested and functioned properly.It was repaired, inspected and tested.The reported event was non-verifiable since during the product review by zimmer biomet australia it was noted that the decompression problem as reported was not observed.However, it was found that the unit was occluding on the second channel.The root cause of the reported event could not be specifically determined with the information that was provided.During the product review by zimmer biomet australia it was noted that the decompression problem as reported was not observed.However, it was found that the unit was occluding on the second channel.It was found that the inflate valves had been installed backwards in the device.It is unknown with the information that was provided how this occurred.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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