The user facility reported to terumo cardiovascular that during cardiopulmonary bypass, the vent valve never worked properly.The customer was able to pull some volume through the valve and then stopped.When it started the full volume again, it squirted blood for approximately 2cc.Product was changed out.Procedure was completed successfully.
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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 april 6, 2017.(b)(4).Visual inspection was performed on the returned sample, during which it was found that the negative umbrella was not in its proper place, as not all of the edges were outside of the housing.Ops valves are subject to a 100% leak test, which includes five different tests the units are run through to ensure there are no leaks and both the umbrellas and duckbills are functioning properly.The following test was performed: program 1: the sample was connected in a circular circuit and pressurized with a syringe to 3.5psi while submerged under water to test the body of the ops for leaks.A leak was seen from the negative umbrella, and the valve was not able to hold pressure.All units are also 100% visually inspected both during the leak testing step and during packaging.It is possible that the unit was subjected to damage at some point after final release causing the negative umbrella to not be seated properly.As this event occurred during cpb, and not prime, it is possible for the valve to have been hit during use causing the damage to the umbrella valve.All available information has been placed on file in quality management for appropriate tracking, trending, and follow-up.
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