Medical Device Inductive charger Qi

Q

Qmwgork

#1
We are developing a medical device that is powered by rechargeable batteries. We intend to recharge with an inductive charger according to the Qi standard. There are many questions that we do not yet have answers to:
- How do we deal with the requirements of current leakage, shock, etc.?
- Must the charger be approved for medical use?

Best Regards
 
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Peter Selvey

Staff member
Super Moderator
#3
A normal charger with a wired connection can conform to the relevant standard(s) for a battery charger rather than medical standards, provided that the equipment is not used at the same time as being charged.

So in your case with a non-wired connection it is obviously OK to use the appropriate standard for a battery charger, e.g IEC 60335-2-29 (I'm not sure exactly which standard would be appropriate, you would need to check scope).

In some cases, manufacturers prefer to use the medical standard anyway (IEC60601-1) as it makes it easier for marketing, avoid confusion or just simplicity (dealing with one standard instead of two, i.e 601 series one for the device, and 335 series for the charger). If you need NRTL recognition, for example, you might need to deal with two different testing groups, separate factory inspections and so on.
 
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