Implanted date: device was not implanted.
Explanted date: device was not explanted.
The actual device was returned for evaluation.
Visual inspection upon receipt revealed no defects.
Saline solution was filled in the blood phase.
With the blood outlet port side clamped, air pressure was applied to the blood phase from the blood inlet port side, while the actual sample being observed for any leak.
No leak was confirmed.
The actual sample was built into a circuit with tubes.
The procedures instructed in the ifu being followed, the actual sample was primed with colored saline solution.
No air remained inside the oxygenator.
After above test, the saline solution was circulated at the flow rate of 0.
5l/min, where an air was applied into the gas phase at 0.
5l/min - 20l/min.
There was no air bubble going into the blood phase.
Subsequently, the pressure inside the gas phase was increased by applying a large volume of air exceeding 20l/min into the gas phase.
Air bubbles were found to be going into the blood phase.
The investigation result verified that the actual sample was the normal product with no anomaly related to air entrainment.
There is no evidence that this event was related to a device defect or malfunction.
As a cause of this complaint, it is likely that the pressure inside the blood phase became lower than that inside the gas phase, due to which air was pulled into the blood phase through the fibers.
However, the exact cause of the reported event cannot be definitively determined based on the available information.
A review of the manufacturing record and the product release decision control sheet of the involved product/lot# combination was conducted with no findings.
The ifu states: "do not supply gas during priming.
Do not obstruct gas outlet port.
Avoid build-up of excess pressure in the gas phase to prevent gaseous emboli entering the blood phase.
Pressure in the blood phase should always be higher than that in the gas phase to prevent gaseous emboli entering the blood phase".
(b)(4).
|
The user facility reported air bubbling on the involved capiox device.
There are no anomalies reported to be seen on the oxygenator when user opened the box.
The user started priming (no patient was involved) as usual around 9am.
By 9.
30am, it was noticed that bubbles began to appear in the arterial filter which suddenly lead to the whole circuit including oxygenator and began to fill up with bubbles.
It was reported that they do connect the gas supply when they prime.
It was reported that according to them, it may help to clear the micro debris.
It was reported that they did not use a hemoconcentrator for this case.
The case was successful by using the new oxygenator and patient was reported to be safe and was not harmed.
|