Added most of the english readme

This commit is contained in:
joladisto 2025-01-25 11:48:52 +01:00
parent 18c953fac8
commit 290ec3e847
2 changed files with 25 additions and 3 deletions

View file

@ -14,17 +14,39 @@ If you want an actual field-tested tourniquet, please go check out [GliaX/tourni
We will use a lot of their testing as comparison, and recommend using the same print settings as them. We also designed our strap and windlass in comparison to theirs : the strap must be as wide or wider, and the windlass must be as thick or thicker (_as they had windlass failure in an earlier version, thus we knew it was a potential weak point_).
Even though the GliaX tourniquet project is an amazing and fully developed project, we still thought that their could be place four our design, as we designed a tourniquet that requires some sawing, but way less than the GliaX design (_as ours is design around the SOF-T design rather than the CAT design_) ; with also less printed parts.
We know our design makes application slightly slower than with a CAT-like tourniquet (like the GliaX tourniquet), but we estimate the difference to be marginal (less than 5 seconds), thus we believe the gain in cost and manufacturing could still make it a viable option in some context.
## 2 - The design of our tourniquet
_To do._
We designed our tourniquet to have a similar application to a SOF-T tourniquet. The main difference is that the mechanism to slide and then hold tension of the webbing is a double-D mechanism (similar to motorcycle helmets).
## 3 - Recommanded usage of our tourniquet
This allows very simple assembly as only the double-D and windlass holder have to be held on one side of the webbing, then the windlass has to be fixed, which requires very little 3D-printing and assembly.
<u>**Proposed application procedure :**</u> we thus propose storing the tourniquet with as little webbing passed through the double-D as possible. Then you can pass as much webbing as necessary through the first double-D to tighten the tourniquet around the victim's limb, then pass this webbing through the second D to tighten and block the webbing in place. You can then turn the windlass until bleeding stops, before passing one end of the windlass through the windlass holder to hold it in place.
## 3 - 3D-printing the plastic pieces
<img src="https://git.deuxfleurs.fr/distorsion/3D-printed-israeli-bandage/media/branch/main/pictures/tourniquet_sliced.png?raw=true" alt="Image not available" height="400" />
You simply need to print two D located at [3Dfiles/double_D.stl](./3Dfiles), one windlass holder located at [3Dfiles/windlass_holder.stl](./3Dfiles) and one windlass located at [3Dfiles/windlass.stl](./3Dfiles). Some minimal support is needed to properly print the underside of the windlass.
We recommand printing using PETG (or ABS, but we haven't tested it), using the following parameters (taken from the GliaX tourniquet) :
- Layer Height: 0.2mm
- Infill: 100%
- 4 top and bottom layers
- 4 perimeter shells/walls
These parameters result in 40g of plastic being used for a single tourniquet, including ~2g of support material ; and a ~3h print on a prusa mk3.
Note that - **although we don't recommend it** - we tested a 0.3mm layer height with 60% infill, and while tightening the tourniquet between two metal posts (_see [manual/tests-results.md](./manual/tests-results.md)_) we didn't observe any critical failure before our strength (with two hands !) was the limiting factor.
## 4 - Assembly of the tourniquet
_To do._
## 4 - Testing and performance of our tourniquet
## 5 - Testing and performance of our tourniquet
We have a detailed review of our current performance testing of this tourniquet available at [manual/tests-results.md](./manual/tests-results.md).

Binary file not shown.

After

Width:  |  Height:  |  Size: 255 KiB