(b)(4).The product was returned and the failure mode was not confirmed.The use history of the pump (s/n (b)(4) was pulled, and the daylog files indicated that the pump was not used on (b)(6) 2016, which is the date that the surgery resulting in joint overpressure was performed.Visual inspection : no physical damages seen on the unit.Seal was intact.Functional inspection: the pump booted up with the following software version: 01.04.05.The critical error log was reviewed and there were no errors related to the complaint.There was no entry in the daylogs folder that a surgery was performed on (b)(6) 2016 as mentioned in the complaint an inflow/outflow cassette tube set was inserted into the pump and connected with a crossfire console using a firewire cable.The crossfire had a footswitch, shaver, and rf probe connected.The crossflow tube sets were connected to a water source and joint test fixture that included a pressure sensor transducer.The pump was then run on standard settings.A set pressure of 50mm hg, 80mm hg and 120mm hg with suction percentages of 30%, 20% and 10% respectively per pressure setting.For each pressure setting, pressure was applied to the joint test fixture membrane and a shaver and rf probe were activated.The testing confirmed that the pump was able to recover and then maintain the set pressures within +/- 15mm hg during membrane depressions and handpiece activations.For each corresponding suction setting, the resulting suction output was normal.No issues observed during testing.Final qc procedure was performed and passed.The customer complaint was not duplicated, no problem found.The probable root cause/s could be (1) user settings (2) kinked outflow tubing.The product was returned for investigation and the reported failure mode was not confirmed.The failure mode will be monitored for future reoccurrence.
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