What is mean by Oxygen Rich Environment as per the IEC 60601-1 clause no 11.2.2

Kunal Deshpande

Starting to get Involved
#1
Hello Expert,

Can you please explain what is mean by Oxygen Rich Environment as per the IEC 60601-1 clause no 11.2.2, which type of medical equipment is used in Oxygen Rich Environment
 
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Kunal Deshpande

Starting to get Involved
#3
Thanks Ronen,

In definition mention" a) greater than 25 % for ambient pressures up to 110 kPa; or
b) the partial pressure of oxygen is greater than 27,5 kPa at ambient pressures exceeding 110 kPa"

So I am confused, is OT is considered as an Oxygen Rich Environment?
 

Peter Selvey

Staff member
Moderator
#5
If the device has a port to connect to a mains oxygen gas supply or an oxygen gas cylinder it's likely that at least parts of the device will be enriched oxygen. Examples are incubators, ventilators, even humidifiers and CPAPs and anything that could be in the path of oxygen therapy.

"Enriched oxygen" sounds scary and might seem difficult to assess. But in fact you still need a combination of unlikely events to create a problem. The approach in the standard is quite reasonable and is based on making sure the specific combination of events cannot occur. Compliance can be achieved by common sense engineering, such routing the oxygen away from mains or high power parts, double seals and so on.
 
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