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Hoseless CPAP
#1
Over the last several years almost everything has gone wireless, it's very rare to even connect a computer to an Ethernet jack.

Why hasn't CPAP technology caught up? The companies out there should have developed a hoseless CPAP system by now. The CPAP machine could be located somewhere central, maybe near the Internet router, and the apnea sufferer should just be able wear their mask anywhere in the house.

Maybe some day it will even be like cell phones, when you travel you will just take your mask, and it will connect to the nearest apnea tower.
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#2
There is a hoseless CPAP system

[fundraising website link removed - fundraising and crowd-funding sites for new commercial ventures are basically commercial in nature and links to such sites are not allowed under forum rules. Instead, to get to the website, simply do a Google search for "Airing Revolutionary Micro-CPAP"]

It's very basic and has a long way to go but it could certainly be the future of PAP therapy





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To maintain our status as an educational organization, the only commercial links allowed in this forum are to CPAP-related manufacturer websites. This is stated in the Apnea Board Rules with details given in the Commercial Links Policy section.
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#3
My post was a joke, funny that it resulted in a link to a product that actually is trying to be hoseless. Thank you for the link! It's interesting, though I don't think that particular product will ever see the light of day. But hopefully someday there will be more options.
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#4
All that's needed is a way to reduce the sizes and weights of the components.

Sleepster
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INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
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#5
Apologies folks for the commercial link I posted - didn't really think about it when answering the question.
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#6
Since we have a lot of engineer types here does anyone know what minimum size and weight specifications would be required to blow between 4 and 20 cm/H2O and provide adequate heat and humidity to tubing? It seems daunting but never say never!
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INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. 
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#7
(11-20-2016, 12:32 PM)sonicboom Wrote: Since we have a lot of engineer types here does anyone know what minimum size and weight specifications would be required to blow between 4 and 20 cm/H2O and provide adequate heat and humidity to tubing? It seems daunting but never say never!

If you search on the device mentioned above you can find at least two different discussion threads, one was even from an engineering site, debating whether the device in question can accomplish what it claims. As is usually the case on subjects like this, there was a great deal of debate about the proper way to calculate it due to the variables involved.

FWIW the engineering consensus was the particular device above is a pipe dream (some were less kind and calling it a fraud campaign). Even without the engineering side, after looking at other variables such as the history of the founder, the fact that they claim it's going to be disposable and run for 1 day, cost $3 each, and last 8 hours, I predict the odds we'll see one in 2017 is about the same as winning the lottery.
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#8
Along with the pressure requirements, the air flow required is the other major parameter. The masks I have all have intentional venting rates around 50 lpm, and if we add in the allowed unintentional leakage rate we need a maximum flow rate of about 75 lpm or more.

So there you go, Mr Dyson... or maybe some budding young turbofan designer Smile
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#9
If a device like this was feasible, the intentional leak could be omitted, so flow needs to be sufficient to meet the minute volume (probably with a safety factor), and pressure needs. Without a hose or mask volume, there is no need to purge expired air. I am the biggest skeptic of the technology, but I think 12 liters per minute should be the objective, and thy might get by with as little as 10. That is still a tall order for something that needs to be contained within the mask interface with its power source, and still be light enough to wear. And that's the bottom line. The technologies for blower power and battery power in such a small package do not exist, and have never even been conceptually demonstrated except in movie magic for the crowd funding campaign.
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#10
Simple answer: Ain't gonna happen.

Complicated answer: The laws of physics might not actually forbid it, but you're going to have to improve a whole lot of things like pumps and batteries an unreasonable amount before it happens.

It's going to be really difficult to do humidification with such a device. Maybe some sort of moisture recovery on exhale, but really tricky.
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