(b)(4).This appears to be a "malfunction" type of event not because there was a technical malfunction of the device, but since due to a use error, the device did not perform as intended.An investigation was carried out into this complaint.Following the information received, it appears that during the night, the nimbus 3 mattress burned in a patient's room.The patient was not injured.When reviewing similar reportable events, we have found a number of cases with similar fault description (the mattress system damaged by naked flames or cigarettes).The occurrence rate observed for reportable complaints with this failure mode is currently considered to be very low.The circumstances of the incident indicate a use error.According to the information collected "aggressive alcoholic and drugged" patient set his mattress on fire.Based on the information received neither the mattress nor the pump was a source of fire.Photographic evidence provided confirmed very severe damage to the mattress.From the picture provided we are unable to see the condition of the pump, however following the information collected the pump was intact.In relation to the risk of fire, our mattress material is flame retardant to (b)(4) ((b)(4) standard flame retardant bedding for bedcovers and sheets ) and we also warn our customers (as per the 'general warning' pages in the instruction for use for nimbus 3) of the remaining flammability risks involved in using our product.The product ifu #(b)(4) contains the following: "do not expose the system, especially the mattress, to naked flames, such as cigarettes, etc." based on the information gathered and our investigation performed it can be concluded that the issue reported is solely a result of an event beyond the realm of our control.Our product at the time of the event was functioning as per its intended use and was not a direct cause of the incident, it was simply present and the existing risk mitigations performed as intended.Although nobody was injured as a result of this event, the risk associated to this particular incident is regarded as severe, therefore we considered this complaint to be reportable to the competent authorities in abundance of caution.
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