Manufacturing device history record review was not performed because the results of the complaint investigation do not indicate a problem with the manufacture of the device.No causes or potential causes of the customer's reported problem were found during the review of service and repair records.A product sample was received for evaluation.Visual and functional testing was performed.Visual inspection found contaminated of fluid/med.Functional testing found the customer problem was duplicated.Running three accuracy tests, the pump was found to be over delivering to the manufacturing specifications.Found contaminated of fluid ingression on device by the downstream occlusion sensor, chassis base and cases may soaped into the inside of expulsor/gasket which possible the root cause of the issue.Replaced expulsor assembly.The root cause of the issue could not be determined.This issue will be monitored for any increase in occurrence.If the occurrence of this issue increases significantly, additional investigative action will be taken accordingly.This remediation mdr was generated under protocol (b)(4), as a result of warning letter cms# (b)(4).
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