A sample was received to perform an investigation.Visual inspection found the device had no damage.The flowrate was measured out at 112 ml/min and would not perform a hi/lo calibration, and the monitor would not see the gas.The reported problem was verified.The co2 bench was replaced and resolved the issue.The cause of the reported problem was related to a defective co2 bench due to wear.This unit was sold in 2010 and this was the first time for repair.The co2 bench has reached the end of its useful life after nearly 10 years of operation.As a result, a fault could not be assigned.Operator of device is unknown.No product information has been provided to date.This remediation mdr was generated under protocol (b)(4), as a result of warning letter cms# (b)(4).
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