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Pacemakers and woodturning

Joined
Jun 17, 2021
Messages
81
Likes
51
Location
Calgary, CA
I recently had a pacemaker installed to control my heart rate and have been trying to find out if there are any precautions necessary when I start turning in a few weeks time after all the healing.
I have a Nova Galaxy lathe, a direct drive system where the motor is encased in the cast iron head-stock. The last discussion here was in 2011 and things have progressed considerably since then.
I wondered if any turners here had any experience or advice, especially if they are pacemaker wearers.
 
Best of luck with your new device.
You need to understand your pace maker and what it does for you.
If you have a pacemaker tech they can give you lots of tips.
I had to see a tech a couple times during the healing to be sure the wires didn’t move.

I go to a pacemaker clinic once a year now it was every 3 months then every 6 months.
They put a magnet over the pacemaker to put it into test mode.
They told me not put an iPhone in my shirt pocket because the magnet will likely put the pacemaker in test mode.
Also said an Apple Watch isn’t an issue but don’t rest it over the pacemaker.

I avoid magnetic scanners.

My pacemaker keeps my heart rate at 60 or above. My heart decided to take a timeout every now and then and restart on its own.
Got mine December 2021.
 
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I used to design and develop pacemakers and implantable devices. @Alan Weinberg is right, talk to you cardiologist or EP.

Twenty years ago or so I, and another engineer, used my PM3520 and some test equipment to check potential interactions with a specific pacemaker at a patients request. My recollection in *that* case was all was good as long as the pacemaker wasn’t held for a time a few inches away from the motor or the VFD.

BUT THAT WAS FOR THAT SPECIFIC PACEMAKER AND A PM3520, you should contact the pacemaker manufacturer and follow their recommendations not something you read on the internet from someone you don’t know.

Best of luck with the new and improved life your pacemaker will enable for you.
 
I used to design and develop pacemakers and implantable devices. @Alan Weinberg is right, talk to you cardiologist or EP.

Twenty years ago or so I, and another engineer, used my PM3520 and some test equipment to check potential interactions with a specific pacemaker at a patients request. My recollection in *that* case was all was good as long as the pacemaker wasn’t held for a time a few inches away from the motor or the VFD.

BUT THAT WAS FOR THAT SPECIFIC PACEMAKER AND A PM3520, you should contact the pacemaker manufacturer and follow their recommendations not something you read on the internet from someone you don’t know.

Best of luck with the new and improved life your pacemaker will enable for you.
Best of luck with your new device.
You need to understand your pace maker and what it does for you.
If you have a pacemaker tech they can give you lots of tips.
I had to see a tech a couple times during the healing to be sure the wires didn’t move.

I go to a pacemaker clinic once a year now it was every 3 months then every 6 months.
They put a magnet over the pacemaker to put it into test mode.
They told me not put an iPhone in my shirt pocket because the magnet will likely put the pacemaker in test mode.
Also said an Apple Watch isn’t an issue but don’t rest it over the pacemaker.

I avoid magnetic scanners.

My pacemaker keeps my heart rate at 60 or above. My heart decided to take a timeout every now and then and restart on its own.
Got mine December 2021.
Thanks for your comments and information. My son has ordered a spectral analyzer to check the interference field. However, from Medtronic, it looks like the 2ft rule will apply.
 
20+ years ago, Medtronic specifically stated don't operate a chainsaw. A friend received a pacemaker this year and I had questioned him if the manufacturer specifically listed operating a chainsaw. He said no specifics, mostly generalities, maybe referring to the 2ft rule.
 
Here's the Medtronics info: https://www.medtronic.com/en-ca/l/your-health/electromagnetic-guide.html

More specifically:
12-Inch Distance (30 cm)


  • Boat Motor
  • Car Battery Charger – 100 amps or less
  • Gasoline Ignition Systems – from components of ignition system
  • Gasoline Powered Tools – from components of ignition system (lawn mower, snowblower, weed whacker, chainsaw)

2-Foot Distance (.6 m)


  • Bench Mounted/Free Standing Tools – for motors 400 horsepower or less (air compressor, drill presses, grinder, pressure washer, table saw)
  • Jumper Cables
  • Welding Equipment
    (with currents under 160 amps, see FAQs)

Not Recommended


  • Welding Equipment
  • (with currents over 160 amps
 
Graham, I'm glad that modern science is keeping you ticking, but those restrictions are harsh. I'm 6'3", but my arms are not long enough to keep 2' from my grinder or lathe motor. I would be asking what could happen if I break the rules. If something like a defibulator function of the device could be triggered, I would look for other options for my hobby. Awhile ago, I toured an antique wood shop display. There were no details of the equipment, but it was easy to see how things functioned. They had a couple lathes. One was operated like a treadle sewing machine. The other was connected to a motor with a 6 or 8' belt. There was a large grinding wheel similarly connected to that same motor. I would need to replace my Nova Galaxi, but I would think you could find a way to move your motor several feet.
 
Not giving advice here, but how about fashioning a faraday jacket? One can buy very fine copper or brass fabric. If this were sewn into a lining for a turning jacket, it would eliminate nearly all of the emi from motors, ac wiring or even cell signals. I’m guessing that the faraday cage would have to be grounded, but that would be easy to do.

Of course, I recommend NOT experimenting with your own pacemaker
 
My PM3520 VFD sits 6 feet from the lathe—machinist did that for me when new VFD was needed since I turn outside. So I detach VFD and store it inside when not turning. Motor in same position attached to headstock. Maybe that would work for you . . .
 
Not giving advice here, but how about fashioning a faraday jacket? One can buy very fine copper or brass fabric. If this were sewn into a lining for a turning jacket, it would eliminate nearly all of the emi from motors, ac wiring or even cell signals. I’m guessing that the faraday cage would have to be grounded, but that would be easy to do.

Of course, I recommend NOT experimenting with your own pacemaker
Marc,

Pacemakers and implantable defibrillators already have EMI filters on their inputs. Device engineers know more than patients about interactions and potential issues. I’d recommend taking the company rep’s advice, if they say keep 2ft away I’d follow that. Although well intended, I don’t think a jury-rigged faraday cage would do much (and won’t do anything for magnetic fields which can alter programming states in many implantable devices), and probably offer more opportunities for unintended consequences.
 
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Marc,

Pacemakers and implantable defibrillators already have EMI filters on their inputs. Device engineers know more than patients about interactions and potential issues. I’d recommend taking the company rep’s advice, if they say keep 2ft away I’d follow that. Although well intended, I don’t think a jury-rigged faraday cage would do much (and won’t do anything for magnetic fields which can alter programming states in many implantable devices), and probably offer more opportunities for unintended consequences.
Hey Ron,
Thanks for letting us know that the pacemakers have some small level of emi protection. That makes perfect sense.
Your other points, however are like “well da” and “no shit”.

I was talking ideas, said clearly that my comments were not advise, and recommended NOT playing with your devices.

Take a chill
 
@Marc Banka -
Sorry, didn’t mean to offend.

Just pointing out that a faraday cage will do nothing for magnetic fields (which is how you change modes etc on most pacemakers).

Additionally, not sure ‘fabric copper’ etc will be low enough resistance to create an effective faraday cage, along with other potential issues. I’m just recommending that’s not a path people go down very far.

Written discussion (especially short form threads) do a very poor job of conveying thoughts and intentions. I apologize again that my writing skills are lacking and my comments came across as anything other than intending to help.
- Ron
 
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Many thanks for all the replies!!!!
I have been informed that the magnetic field outside the Galaxy motor is about the same as that emitted by a computer monitor!
So I will take the risk when I start turning again in 4 weeks time*. If I feel any effects, I'll go the Oneway route.
* There's a weight restriction for my left arm for 6 weeks after the installation and I don't want to risk any strain.
You have to. It's for your health. :)
I'm still tempted:)
 
Yes, I'm strictly following the instructions from the cardiac unit to allow scar tissue to form around the wires. The 2-week ban on driving thankfully comes to an end tomorrow.
Under the new, absurd tariff regime, a Robust lathe becomes ridiculously expensive. As I'm Canadian, Oneway lathes are the obvious choice should I succumb to temptation.
 
@Marc Banka -
Sorry, didn’t mean to offend.

Just pointing out that a faraday cage will do nothing for magnetic fields (which is how you change modes etc on most pacemakers).

Additionally, not sure ‘fabric copper’ etc will be low enough resistance to create an effective faraday cage, along with other potential issues. I’m just recommending that’s not a path people go down very far.

Written discussion (especially short form threads) do a very poor job of conveying thoughts and intentions. I apologize again that my writing skills are lacking and my comments came across as anything other than intending to help.
- Ron
Hey Ron, No problem, and I apologize for being snippy.

Again, you’ve given great information, especially regarding magnetic fields. That’s a different problem, I guess. You seem to have a lot of knowledge about pacemakers. Are you a user or engineer? I’m not a scientist or engineer so appreciate, so appreciate when they speak to specifics.

My reasons for posting about faraday clothing is that I’m a thinker, a ponderer. I see problems and enjoy kicking them around, looking for solutions maybe not yet tried. And then, especially putting myself in the OP’s position, being strong and able enough for woodworking, but hampered by this devise, the pacemaker. I would be investigating my own idea.

Last evening, after our exchange, I did an experiment. I cut a section of this copper cloth we happened to get from a local metal scrapyard. I suppose they call it screen, but it’s so fine and flexible, more like cloth. I was listening to music in the shop. Streaming music from my phone to the Bluetooth speakers. I set the phone on the copper, folded it over the top of the phone and closed down the edges. Not anything fancy or well sealed, just with my hands. The phone immediately lost cell, WiFi and Bluetooth. I was surprised it went so dead, so fast. Not a solution, but an interesting experiment.

So, it seems that faraday jacket would shield from emi and rfi. What blocks the magnetic fields? And, what devise would one need to measure small magnetic fields?

Looking online for faraday clothing I found them for sale at suppliers for dooms day preppers, to stop snooping by whomever wants to snoop. Apparently they work. Also found that a faraday suit is worn by electricians working on high voltage towers. It protects them from electrocution. There is no voltage limit to the effectiveness of the clothing, or so I’ve read.

Let me state again, my comments here are for exploration and, as the forum name suggests, a discussion. I’m quite sure that a solution is there, and likely not complicated. Industry could make it,,or maybe already has. If not for our purposes, but areas with a greater need, like high voltage workers, or sensitive instrument work. Although a solution might be straightforward, no one is going to make something specific for the few craftsmen with a need.
 
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