The customer reported that after 60 minutes into the procedure, the operator observed foam and aggregates in the reservoir and air in the cassette circuit.Due to eu personal data protection laws, the patient information is not available from the customer.This report is being filed in response to the customer filing a sae report with their local authorities.
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Additional evaluation for method: manufacturing review investigation: the disposable set was received for investigation.Upon visual inspection no foam was observed in the reservoir which was noted to be half full.No occlusion of the set was found.No kinks of the channel lines were noted.The run data file was analyzed for this event.A review of the device history record (dhr) for this unit showed no irregularities during manufacturing that were relevant to this issue.Root cause: this collection had an unresolved occlusion in the disposable, blocking the flow.This can be caused by a misload, clumping, or an air block impeding flow.A review of the images showed only slight signs of clumping.The door was never opened to check for loading, which can help resolve an air block.The system operated as intended by correctly noting the volume issue and alarming to direct the operator to remove any obstructions from the collect line, check for clots, and ensure the channel and lines are correctly loaded.
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