Patient reports pump serial number (b)(4) has been alarming no disposable for the past few weeks.They attempt to realign the cassette but pump will still alarm and they end up needing to mix a new cassette.Author advised we would replace pump but added it could also be a cassette issue.Patient was able to provide lot and expiration date info for current cassette lot 4116349, exp 03/19/2026.Product fault occurred while in use.Product fault did not cause injury.Device available for investigation.Device being replaced.Patient was unable to switch to back up because patient was waiting for backup pump to arrive which also experienced the same issue.Patient able to continue infusion using current pump.Infusion is life sustaining.Reported to (b)(6) by pt/caregiver.
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