Experimental A2 finger pulley injury pressure ring clamp

prusaprinters

DISCLAIMER: This is not a medical device, this has not been developed with any input from any qualified medical professional or been tested in a systematic way. It has the potential to cause further injury or circulation issues even if used correctly. I believe the one I made and wore to be relatively safe for me but I do not make any claim about anyone else using this. I am publishing this in a hope someone else may find it educational. If you choose to try this you do so at your own risk and I accept no liability to anything that might happen. This is a ring that is designed to help recover after an A2 pulley injury by applying pressure just to the front and back of the finger, not the side, which allows fairly substantial pressure to be applied to the pulley region without cutting off the blood supply in the side of the fingers. This is supposed to help heal a finger pulley injury quickly. It is inspired from the devices tested in this study: https://www.wemjournal.org/article/S1080-6032(15)00477-9/fulltext Printed 0.2mm in Colorfabb varioShore TPU NATURAL at 200C (no foaming), which is approximately 92A shore hardness. This is sized very specifically for my RING FINGER, which measures approximately 18mm diameter. You will need to iterate the size to get a snug fit but not TOO TIGHT - this is the real risk, that one might cut off the blood supply to the finger, especially if wearing overnight. You can get a pretty good idea of this both from the feel of it and if your finger gets at all colder than the others after a couple of minutes. I find the TPU a bit itchy on bare skin so I've taken to flipping it inside out and lining the inside with finger tape. I've worn it for 3 weeks on and off and found my very mild A2 pulley injury improve significantly. I don't wear it climbing, then I tape more aggressively. I think it probably gets pretty dirty, and at the cost of printing them, would probably be better to just make a load and change them every time you wash your hands. I think this is much easier to use than H taping as it 1) doesn't leave residue 2) you can take it off when you get your hands wet 3) should theoretically provide better recovery if it recreates the clamps described in Schneeberger's paper and 4) isn't so fiddly to put on correctly - I've found taping is easy to make too tight or make a huge mess. Print Settings Printer: Artillery Sidewinder X1 Rafts: No Supports: No Resolution: 200 Infill: 38 Filament: ColorFabb TPU Natural How I Designed This =================== Designed in Freecad 0.19 more or less with just one very complex sketch. Key to the fit was getting the circumference right. I designed it squashed like it is so that when on the finger it is already bent and keeps the pressure off the side of the finger as designed without having to be too wide. This is really very important. Category: Biology