This follow-up report is submitted to fda in accord with applicable regulations ¿ and as indicated by terumo cardiovascular systems in the initial report submitted to the fda on june 08, 2018.(b)(4).The actual sample was not returned and the affected lot number was not provided; therefore, a thorough investigation could not be performed and a definitive root cause could not be determined.Similar complaint reports were reviewed and the most likely root cause for this event may have been the large blue vent cap for the shunt sensor was not fully tightened either during setup of the circuit, or after the gas calibration.When the large blue vent cap was loosened, it may not have been re-tightened fully prior to use in the line, causing a leak.All available information has been placed on file in quality management for appropriate tracking, trending, and follow-up.
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