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H

hell toupee

Member
Sep 9, 2024
57
[Disclaimer: This is entirely theoretical - I have not built or tested the device I'm about to describe, which is the reason for this thread - I hope to stimulate a discussion where we can improve upon this device, exchange ideas, etc. If it works, and I don't see any reason why it wouldn't, it could be the holy grail that we are after - a quick, painless, guaranteed ticket to the afterlife using 3 cheap items that can be bought by anyone, anywhere.]

We all know that the closest thing a human being has to an easily accessible on/off switch is the carotid arteries.

During WW2, a team of scientists led by a chap named Rossen were studying the phenomenon of why aircraft pilots were losing consciousness on rapid ascents after bombing runs. In order to do this, they built a makeshift cuff that used the bladder from a blood pressure cuff called the "KRA Cuff" (see pics below). All of this can be looked up on the Internet. The device essentially inflates the bladders so that pressure is applied to the sides of the neck, right where your carotid arteries are. Note in the pics below that there is an opening in the front so no pressure is applied to the trachea, and none of the (presumably) uncomfortable or painful sensations one would get when attempting to hang or with night-night method.

58 volunteers sat in the chair and every single one lost consciousness within 5-15 seconds. Every single one. To my eyes, this KRA Cuff is simply replicating a choke hold in martial arts. If you've ever watched any type of mma/Judo/Jujitsu/etc, you know that guys get choked unconscious all the time - and these are guys who are breathing really heavy while it's happening - if there was any kind of suffocation going on, there would be panic, but there isn't, they just kind of fall asleep. A choke hold is where the forearms are applying pressure to the sides of the neck, but the windpipe is left exposed and unobstructed.

Falling asleep, or going unconscious when your carotid arteries are occluded, is just a stage before death - if circulation is not restored within just a few minutes, brain death occurs. I might be wrong about this, but I believe after 10 minutes there is no return. Let's just say 30 minutes to be safe.

Here is the "KRA Cuff":

images


images


images




I was wracking my brain last night trying to think of an easy way to replicate this, and here is what I came up with. I would like to think of this as a forum project, where anyone interested can help with ideas, suggestions, tips, etc. I think this is very doable so give me a dose of reality if you think this is not going to work.

You would need to buy 2 analog (old fashioned) blood pressure cuffs (or any other product that has a bladder or tube that can be inflated) - the digital ones have auto release, so that wouldn't be very good. Something like this:

x600-5372.Jpg


You would need 2, because if you only used 1, it would have to wrap around your entire neck, and that's no bueno - we don't want to suffocate and I don't like the idea of taking the chance that my carotids would be blocked before I asphyxiate.

Next, we need something to secure the cuffs, which I thought a neck brace would work - there are many styles and types - here are a few:

coretech-cervical-collar-sup2049gry.jpg


philadelphia_collar6561330_m.jpg


You get the idea.

What I am thinking is you would buy a neck brace that is just a little bit too big for your neck, so there is space to put the cuff in there - if it's adjustable, that might be better as long as the velcro doesn't come undone but you could just wrap duct tape around it once everything is in place if you wanted.

You would then need to unroll each cuff so it's flat (maybe keeping it rolled up is fine if both placed on sides of neck - need to experiment) and place the cuff between the neck brace and your neck, leaving the windpipe open so you can breathe. Placement should be similar to the KRA cuff in the closeup.

You inflate the cuffs, it pinches your carotids and goodbye.

Concerns:

1. Will the cuffs hold air for at least an hour (I want insurance)? I plan on ordering one, inflating it, then sitting on it for an hour to see if it deflates at all.
2. Too much pressure maybe breaks the neck brace, or causes velcro to come undone - this could be remedied by wrapping duct tape around the outside of the brace once everything is in place and you are ready to go
3. Cuffs possibly slipping inside of the neck brace? I don't see this as a concern - too much pressure but will need to test.
4. As mentioned above, I want to eventually test if it works better with the cuffs unrolled and placed on each side of the neck and around the back (they will overlap in the back most likely) or to simply keep them rolled up and just make sure they are covering the general area of your carotids (sides of neck up to, but not over, your adam's apple.

My biggest concern is if the cuffs are powerful enough to actually occlude the carotids - but I don't see why they wouldn't be, obviously will need to test.

And that's it. No anchor points needed, no pain, no shady chemicals that you have to source, no loud noises, no knots to come undone, etc., and it's inexpensive.

EDIT: I wonder if maybe using bicycle inner tubes would work (or similar) instead of the cuffs - like an inner tube for a small tire or something...

As I said, this just kind of came to me last night, and I'm sure there will be some kinks to work out, but I really think that we could make something like this work.
 
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theboy

theboy

Illuminated
Jul 15, 2022
3,348
Is it very suspicious to buy both in the same place or at the same time?
 
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H

hell toupee

Member
Sep 9, 2024
57
Is it very suspicious to buy both in the same place or at the same time?

Not in the slightest. Nothing like this even exists, so I would say there is 0% chance that it raises any suspicions. Zero.
 
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Firefly.Forest

Firefly.Forest

Member
Aug 28, 2025
10
Including earlier informational post from SS for reference.

 
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H

hell toupee

Member
Sep 9, 2024
57
Very interesting

I found some more possibilities that might work instead of the blood pressure cuffs - I just searched in Google for "inflatable bladder":

These are for welding and can be bought in very small sizes:

I_Purge_Isolator_Inflatable_Pipe_Stopper___Single_Purge_Bladder-800-409_216dfef0-46a9-469b-8bb8-239749cb7613.jpg


This might be perfect (you would need 2, obviously)

transformer-conservator-rubber-bag.jpg

inflatable-pipe-plugs-nrc-big.jpg


They make small ones for pipes as well:

114022-450x450.webp

I actually like these better than the blood pressure cuff idea. You would need an additional item - a small hand held air pump/bulb which you can buy for less than $10.

If you wanted to get fancy, you could buy air hose and a splitter (like in the KRA Cuff diagram) that way 1 pump inflates both bags on either side of the neck,

The good thing about the blood pressure cuffs is they come with a little air pump bulb and if you are on a budget you wouldn't need to buy them separately.
Including earlier informational post from SS for reference.


Awesome.

My concern is whether or not these small air bladders, or the cuffs, will provide enough force, but I would certainly think so.

Do you have any thoughts/ideas? I want to gather as much info as possible before I start buying parts and testing.
 
S

SissySteph

Member
Aug 29, 2025
18
Sounds like this is similar to the tourniquet method, but potentially more comfortable?
 
H

hell toupee

Member
Sep 9, 2024
57
Sounds like this is similar to the tourniquet method, but potentially more comfortable?
Not really.

Tourniquet is more akin to hanging or night-night (ie using a ratchet strap) - where you are placing pressure around the entire neck, which includes the airway. People have difficulty with those because it's kind of like a bull in a china shop - you are just compressing the entire neck and then hoping the carotids get occluded quicker than you suffocate.

This would completely alleviate the need to even risk suffocation, and would specifically target the carotid arteries. As I mentioned in the study by Rossen, all 58 volunteers immediately lost consciousness - certainly if any kind of suffocation or suffering was going on, it would have been reported.

For me personally, as long as I lose consciousness immediately and painlessly, that's good enough for me.


EDIT (don't know why this forum stacks my posts in to earlier replies - the following is just a general post - not necessarily to you Sissy)

: My biggest concern atm is whether or not the air bladder/cuff, will be powerful enough to occlude the carotids. Perhaps they just start expanding the neck brace rather than pushing in to your neck - this part could be solved with tightly wound duct tape over the neck brace once everything is in place.

Another concern is whether or not a squeeze bulb will allow you to squeeze enough air in to the bladder to dig in to the carotids. If that's the case, perhaps a bicycle type pump would be needed that gives you more leverage.

At this point, I'm just rambling and it seems there isn't much interest in this, so instead of clogging up the forums, I'll just start taking notes and doing what I can.

If I disappear within about a month, you'll know it worked. If the thread gains more traction, of course I'll contribute - I just thought that by posting what I'm thinking, it might trigger some more ideas, but maybe not.

Best of luck to you all.
 
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H

hell toupee

Member
Sep 9, 2024
57
Ok, just an update if anyone is interested, as I think I have this dialed in. I ordered the following from Amazon just a few hours ago.

Extrication Cervical Collar $13

shopping


Air Wedge Bag Pump x2 (about $10 ea) - are made to hold 100's of lbs of weight - used as a jack and to lift furniture, etc. More than strong enough.

61i7KHVSAoL.jpg


Ratchet Strap ($5 - $10) - my concern was that the air bladder would exert force towards the brace instead of fully compressing the neck, so the ratchet strap goes on over the neck brace once the 2 air bladders are in place. This will insure that all of the force from the air bag goes in to carotid arteries.

6107epftrGL._UF350,350_QL50_.jpg

That's everything. I'll post again with pics once I have it put together but there really is no assembly here - its just placing the bags around neck up to but not over windpipe, then putting on the cervical brace over it, and finally, when ready to punch the ticket, rapping the ratchet strap around the brace and cranking it down tight. I plan to squeeze the bulbs until I just pass out.
 
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