[Cyborg] Building a home polysomnograph to record heart rate, blood oxygen while you sleep.

Kevin Burton burtonator at gmail.com
Wed Jun 1 19:51:30 PDT 2011


http://ian.ahands.org/progs/pulseox/index.html

is probably the best solution......

the CMS50E is wireless too ..... so no cable to get caught up in.

And it's just a USB character device which I think is supported pretty much
everywhere (Linux, OS X , Windows).

I think I"m going to buy one of these bad boys :)

On Wed, Jun 1, 2011 at 7:43 PM, Kevin Burton <burtonator at gmail.com> wrote:

> There's this one:
>
> http://focus.ti.com/docs/toolsw/folders/print/tmdxmdkpo8328.html#buy
>
> But it's $400.
>
> The problem is that there is so much money in the medical industry that
> they can charge whatever the F they want because insurance just pays for it
> (granted it's a bit more complicated than that)
>
> ....
>
> http://tinkerish.com/blog/?p=181
>
> this guy build a hard core one :)
>
> On Wed, Jun 1, 2011 at 6:38 PM, John E <neurofog at gmail.com> wrote:
>
>> Kevin,
>>
>> +1 Its a good idea, and can be made surprisingly cheap.
>>
>> The trick for Spo2 measurement is buy the sensors, and make the
>> measuring electronics yourself. TI offers Hardware Development kits
>> for medical applications that might help.
>>
>> Regards,
>> John
>>
>> On Wed, Jun 1, 2011 at 6:18 PM, Eric Boyd <mrericboyd at yahoo.com> wrote:
>> > Hey, great idea, it'd be super awesome to have a USB-capable
>> pulse-oximetry
>> > device.  I haven't heard of such a thing, at any price, though you're
>> > probably right that expensive ones exist.  I once hacked a cheap ($30)
>> > finger-clamp one in order to get out the heart-beat information, but
>> > basically all I did was wire into the LED display - it had a little
>> display
>> > with 5 LEDs serving as a kind of bar-graph display for the signal from
>> the
>> > heart, so all I did was wire into the 3rd and 4th LED, and feed that
>> into
>> > the digital pins on my microcontroller.  Easy hack.  But I imagine it
>> > wouldn't be that much harder to find e.g. the control circuitry for the
>> > display and reverse it to get out the characters that are being shown
>> (and
>> > thus the oxi-reading).  Feed that into a new Uno arduino and you could
>> write
>> > the USB-interfacing stuff.  I'd love to help but sadly I'm in Toronto
>> now.
>> > Hopefully someone will step forward to help you out!
>> >
>> > Eric
>> >
>> >
>> > On 6/1/11 8:31 PM, Kevin Burton wrote:
>> >
>> > Hey gang.
>> > Long story short.  I'm a data/fitness/compsci geek.
>> > I've been aggressively tracking all of my body telemetry as part of my
>> long
>> > term project to improve my health (and live at peak physical condition).
>> > Here are a few links:
>> >
>> http://feedblog.org/2011/04/19/on-polysomnographs-apnea-oximeters-ant-and-data-recorders/
>> >
>> http://feedblog.org/2011/04/17/reflecting-on-my-recent-sleep-experiments/
>> >
>> http://feedblog.org/2011/03/29/the-horrible-problem-of-synchronized-fitness-data/
>> > http://feedblog.org/2011/03/19/my-quantified-self/
>> > I'd like to now build a cheap home polysomnograph.
>> > http://en.wikipedia.org/wiki/Polysomnography
>> > I did a bunch of research and a professional ONE NIGHT visit to a sleep
>> > clinic to get a polysomnograph is $2500.
>> > So what I want to do is basically buy a cheap oximeter to measure blood
>> > oxygen and heart rate.
>> > A recent paper was released showing that oximetry is the leading
>> indicator
>> > of apnea and that this $2500 polysomnograph is just a waste of money (I
>> can
>> > find the link if someone wants it but I have to track it down).
>> > But these oximeters are cheap... $24.
>> >
>> http://www.google.com/products/catalog?client=safari&rls=en&q=oximeter&oe=UTF-8&um=1&ie=UTF-8&tbm=shop&cid=312759277086602921&sa=X&ei=I9nmTZ3zEoT0swPxpOSKCw&ved=0CJIBEPMCMAE#ps-sellers
>> > The problem is that none of them have PC integration support.  There is
>> a
>> > chinese company that has one for USB but Windows only drivers and it's
>> $150.
>> > These are designed to be spot monitors.
>> > I think the reason is that the market for more professional ones is like
>> > $500-1000 for "professional" home monitoring.
>> > What I'd like to do is buy one of these cheap ones and mod the hardware
>> to
>> > interface with USB and then publish the specs on how to mod them.
>> > I'm not a hardware hacker though... nor do I have any real motivation to
>> > work on hardware.  This is a one time project.
>> > Any pointers?  I can do the software and analytics component of this and
>> > will volunteer myself as a guinea pig.  I just need a USB interface for
>> the
>> > oximeter data..
>> > Kevin
>> >
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>> >
>>
>
>
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