There was no patient involvement.Serial number is unknown.This information will be provided in a supplemental report if made available.As the serial number is unknown, the device manufacture date could not be determined.This information will be provided in a supplemental report if made available.Livanova (b)(4) manufactures the centrifugal pump system with tubing clamp.The incident occurred in (b)(6).The technician in charge was not able to reproduce the failure reported.However, the shaft angle encoder and the cpu circuit board were replaced precautionary.The replaced parts were returned back to the manufacturer site for further investigation.The described error could not be reproduced.A visual inspection, a functional test and an hardware analysis have been performed.No problem could be detected.Based on the above facts, it cannot be ruled out the an intermittent connection between the encoder and the cpu board led to the reported malfunction.
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