There is obviously no unique answer. You can:

- not use USB and provide a charger with a unique connector (my choice);

- use USB, but put full overvoltage and overcurrent protection in your product;

- rely on warning notices (not recommended!)

John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK

On 2018-04-10 17:21, Nick Williams wrote:
Colleagues,

EN 60601-1 3rd ed. requires the manufacturer to take a risk assessment based 
approach to the safety of their electrical medical products.

With the increased used of universal USB power as a source for battery 
charging, it’s easy for the risk assessment to identify use of the medical 
device with a potentially faulty charger either because the device manufacturer 
has not included a USB power adapter/charger wth the product or because the 
user has chosen to use a charger other than the one supplied by the 
manufacturer.

How far does the manufacturer need to go in order to provide protection against 
the hazards from a faulty charger, not supplied by them? Bear in mind the 
hazardous scenarios may include a patient contact device being used while being 
charged.

I await opinions with interest!

NIck.

-
----------------------------------------------------------------
This message is from the IEEE Product Safety Engineering Society emc-pstc discussion 
list. To post a message to the list, send your e-mail to <emc-p...@ieee.org>

All emc-pstc postings are archived and searchable on the web at:
http://www.ieee-pses.org/emc-pstc.html

Attachments are not permitted but the IEEE PSES Online Communities site at 
http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used 
formats), large files, etc.

Website:  http://www.ieee-pses.org/
Instructions:  http://www.ieee-pses.org/list.html (including how to unsubscribe)
List rules: http://www.ieee-pses.org/listrules.html

For help, send mail to the list administrators:
Scott Douglas <sdoug...@ieee.org>
Mike Cantwell <mcantw...@ieee.org>

For policy questions, send mail to:
Jim Bacher:  <j.bac...@ieee.org>
David Heald: <dhe...@gmail.com>


-
----------------------------------------------------------------
This message is from the IEEE Product Safety Engineering Society emc-pstc discussion 
list. To post a message to the list, send your e-mail to <emc-p...@ieee.org>

All emc-pstc postings are archived and searchable on the web at:
http://www.ieee-pses.org/emc-pstc.html

Attachments are not permitted but the IEEE PSES Online Communities site at 
http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used 
formats), large files, etc.

Website:  http://www.ieee-pses.org/
Instructions:  http://www.ieee-pses.org/list.html (including how to unsubscribe)
List rules: http://www.ieee-pses.org/listrules.html

For help, send mail to the list administrators:
Scott Douglas <sdoug...@ieee.org>
Mike Cantwell <mcantw...@ieee.org>

For policy questions, send mail to:
Jim Bacher:  <j.bac...@ieee.org>
David Heald: <dhe...@gmail.com>

Reply via email to