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More Medical Devices Should Be Open Source, Like This ECG (github.com)

isza writes: This is a follow-up to the Slashdot story about mobilECG, a 12-lead, clinical-grade ECG being open sourced. We have not given up on our goal to get rid of the high-profit-margin and dishonest distribution practices of diagnostic ECGs, and make a certified open source version of this important diagnostic device. After many months of hard work, there is now a working prototype of a much more capable device than the first version, with its sources available on GitHub. MobilECG now has a Holter function, changeable lead-configurations and Bluetooth. Here's a video of the prototype working.

8 of 79 comments (clear)

  1. Mobile ECG Business card by psergiu · · Score: 4, Interesting

    Also check the guy's business card.

    https://www.youtube.com/watch?...

    The card is measuring the real Einthoven Lead I ECG curve between the two hands - sampled at 50Hz.

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  2. FDA by OverlordQ · · Score: 4

    So, who is going to pay for the FDA certification?

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  3. Unlikely to be usable in the USA by Fencepost · · Score: 4, Interesting

    I'm not directly involved with medical product design or certification, but while this looks fascinating I think they're going to have a difficult time with selling it, at least in the USA and I suspect in many other countries as well. That's because they're going to have a very hard time getting required certifications / FDA approval, and it'd be really hard to try to argue that this isn't a medical device.

    I'll give a couple of related examples: DICOM viewing software, which has a wide variety of open source and free low-end versions of commercial software, most or all of which are careful to note that they are "Not For Clinical Use" because they haven't been through a certification process. You can get them an use them (for example for reviewing your own medical imaging data), but physician's offices that actually use them for clinical purposes are running significant risks not so much of being sued but of having insurance complications on the off chance that they do get sued (or if the company somehow found out about it).

    The other example I'll offer is Cefaly, a device for treating migraines with low-level electrical stimulation. They were available for quite some time (including over the counter I believe) in Canada and Europe, but it took a couple of years before the FDA approved their marketing and sale in the USA (http://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/ucm388765.htm). The version approved for the US market was also simplified from the international version, having only a single level rather than the 3 modes found on international models. Cefaly was also reviewed through "the de novo premarket review pathway, a regulatory pathway for generally low- to moderate-risk medical devices that are not substantially equivalent to an already legally marketed device." That's not something that will be available for mobilECG which will likely get a variety of industry pushback noting that it's substantially similar to existing ECG and Holter devices.

    So overall this looks like a great way to improve cardiac care in second- and third-world hospitals lacking access to or priced out of purchasing equipment, but I think their market is a lot smaller than their video implies.

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    1. Re:Unlikely to be usable in the USA by MountainLogic · · Score: 3, Informative

      You will find that the analog front end for designing an EEG is non-trivial. Humans are a very low impedance source with a very poor signal to noise ratio due to cable, electrode, muscle and other subject generated noise that swamps the signal. Large sacks of electrolytes make great antennas for 50/60 Hz pick-up too. Add in the ability to survive a defibrillator hit of a life-safety device and the analog front end become very interesting. That said, TI has an entire analog front end for ECG that handles many of the thornier challenges including actively driving the leg electrode.

  4. Where is the proof of the rip-off ECGs? by mykepredko · · Score: 3

    This reminds me of an entrepreneur who approached me to help him design and code flat panel instrument panels for light aircraft. He felt that $25k+ for a panel and instruments was ridiculous when he could buy the parts for just a couple of hundred dollars. Then he looked into certifications (which included environmental testing) along with liability insurance and type certificates and suddenly that $25k wasn't so outrageous. This was around ten years ago - doing a quick check, it looks like Aspen Avionics has a fairly inexpensive PFD ($5k for a basic display).

    Now that I'm over 50, my doctor has an ECG he rolls out every couple of years and doesn't seem to regard it as anything other than a piece of equipment like a stethoscope. It has a simple LCD display and it connects via WiFi to the office network where it sends jpgs of the waveforms.

    So, how outrageous are the profits for ECGs and what are the dishonest distribution practices?

  5. Trouble is... by sbaker · · Score: 4, Interesting

    ...medical devices have to be certified by the FDA (or someone big and scary like that)...and that costs an off-the-charts amount.

    I built a gizmo for some sorts of diabetics who have to be careful about standing still for a long time because it can destroy their feet, There are a truly ghastly number of amputations each year because of this. So - pressure sensors in shoes, bluetooth gizmo, cellphone app that goes BEEEEP! If you're standing badly for too long. Cost to make - about $100...maybe $50 in quantity.

    Sure - any idiot with an arduino and some old-school hacking skills could do that - right? Sure - I don't claim to be all that clever!

    So I go to doctors who specialize in this stuff - they say that the current solution costs $12,000 and mine is just as good. In fact, I could trivially get it to log data, text or email it to the doctor, log it to the cloud...whatever...the $12k gizmo's don't do that.

    Oh - but FDA approval is needed. Human trials. Yadda yadda yadda. Cost of doing that is $500,000. Add product liability insurance, you name it.

    Estimated sales...oh darn. My $50 gizmo will have to sell for $15,000.

    So - 70,000 people who we could EASILY help for very low $$$ are still getting their feet amputated for absolutely no good reason every single year.

    Go figure.

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    1. Re:Trouble is... by sbaker · · Score: 4, Interesting

      In my case, it didn't matter whether the firmware was opensourced or not...the cost of the certification made it impossible for a small business to do...the cost of liability insurance was insane. There are requirements to certify the manufacturing process (so no $6 Arduino clone) and a requirement to offer a repair service (Really? Just throw the old one away and buy a new one!)...it's crazy.

      When you consider the cost of amputation (surgery - not being able to walk afterwards, loss of quality of life, etc) - even this device doesn't have to be anywhere near 100% reliable to do a lot of people a lot of good. But if just one person were to lose a foot because the gizmo failed to warn them - the resulting lawsuit would bankrupt any small business just like that.

      So, 70,000 people per year suffer one of the worst things that can happen to anyone as a direct consequence of a broken system.

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  6. Re:Hearing aids by Applehu+Akbar · · Score: 3, Informative

    "They are custom-fitted, high precision medical devices..."

    Which contain perhaps a hundred bucks worth of electronics and have a history of seldom working to the satisfaction of the patient. My town is full of high-end retirees, and every one I have spoken to has a drawerful of expensive hearing aids that suck. This area of medicine is overripe for disruption by some Silicon Valley company that can make a device that performs more like a natural ear.