[RFI] Defibrillator and RF Exposure Query
dgarnier at wi.rr.com
Tue May 9 22:26:58 EDT 2006
I work for a major medical electronics manufacturer in the Midwest.
We build MRI, CT, PET, Ultrasound, Conventional X-Ray and Patient
I conduct EMC test and compliance for some of this equipment.
(My company got out of that pacemaker business many years ago.)
I will give you _my take on this problem._
1) Even if you knew the manufacture of the medical electronics device
that was going to be implanted into your chest - I strongly doubt that
you could get anybody at the company to speak on the record to you.
_The real question you want to ask is what are their internal RF
susceptibility test levels._ This is an industry that sees many legal
taken against itself. Good luck on getting a serious answer.
2) I suspect 10 V/m is the test standard since it's a variation of patient
life support,_ but I don't know_. (I will look up those particular
tomorrow because you got me curious.) From my experience, I see
most susceptibility problems occur when AM modulation is turned on
and off. (In my opinion running high power CW or SSB would be a
3) _This is a serious question_. (I am surprised that the EME folks haven't
had an accident yet.) I am _not hopeful_ that you will receive a
answer from the implantable medical device manufacturer
4) I certainly hope there will be a "support person" present when your
friend keys his rig for the first time. In my opinion, don't even consider
running a Kilowatt, _it may exactly do that_.
Contact me off list if you would like to discuss this further.
Regards & 73's
Dave Garnier - wb9own
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