The investigation was based on the reported event, email correspondence and photo of the affected oxylog 3000 plus s/n.(b)(6).Later, the device was provided to the manufacturer for inspection.According to the investigation results, the housing shows severe heat / fire damages.However, based on the results of the examination, the source of the heat is unclear, but it is obvious that the oxylog cannot be the cause of the damage.The interior of the unit, particularly the pneumatics, shows no damage or evidence of heat or flame.The battery is also completely undamaged, as are the circuit boards, these show no signs of heat generation, only the area where the smoke entered the housing through the holes is stained black.Nor could the flame have been caused from the breathing tube system as reported, because the disposable breathing tube system with its very thin wall thickness could never carry the heat for such a long time as was necessary to cause the damage.Based on the damage to the side and rear of the equipment, it can be assumed that an external heat source must have been the cause of the fire, possibly caused by a gas flame or similar.These areas must have been exposed to tremendous heat for at least several minutes to cause this damage.In addition, there must have been some sort of "air flow" as molten particles/droplets of molten plastic were blown far inside the enclosure (see blue droplets on the pneumatic cover and orange splatter on the valve wires inside the pneumatic.No health consequences have been reported on users or patients.In case that the device is destroyed by a fire nearby it cannot be used any more and must be replaced.The event was classified as non-reportable according to the european meddev 2.12 rev.8 and the medical devices regulation (mdr (b)(4)), as no evidence of device malfunction or evidence of cause as a fire was detected from the device.The results of the investigation did not reveal any new risks which are not covered by the product risk management file.
|