hANDi hand orthose by Teljemo

Last crawled date: 3 years, 1 month ago

Hitstory
We adopted our son from Shanghai this spring.
He has a mild case of Spastic Cerebral palsy that is making his left side of the body not working perfectly.
His left hand is bent with muscle tension all the time. We need to stretch and do different kinds of training several times a day.
I had the idea for this hand for i while but haven't had any experience in 3D design.
But then a friend of mine sent me a link to this challenge and that gave me new motivation.
It took some time to learn a software program and a lot of starting all over, and when I got a design right I printed, tested and sometimes had to redo, but now I got it :)
So this is my contribution for the Thingiverse #AssistiveTech Challenge
Use
For my son right now the hand was made for only one purpose, to stretch.. but it turned out that somehow he also can now hold the hand in a upright position he never could before.
that's a huge bonus, it will really help him when playing.
hANDi both stretch his hand out by pulling it up against the "overhand plate". At the same time it stretches his fingers up.One thing I have to add to this section now after designing the add on "pen holder"
is that at the same time he gets the stretching he needs he can draw, and that really helps him with hit motor skills. It is amazing to sit down and see the progress he makes in using his arm.. amazing!!!
Other purposes for the hand is muscle rehabilitation. cause of the spring tension.I hope this hand can help other kids to with CP or some kind of hand injury.
So i made sure to do the design so it can be used on both left and right hand ;)
I also added a alternative arm between the ring and hand plate that has a 20 degree upward angle for more stretch.
About the size, our son is 4 years old and the finger tips of this design is a perfect fit for him... if it doesn't fit, just scale it up a little ;) or ask me and I will help you with it :) If you are using fusion 360 I can invite you to the project folder :)
Also... I have some options in fusion to extract the files. I am new to this so I dont know what file extension is the best to share? I have seen some people upload .STEP files.
Do you want me to do that?
After printing I added some soft materials to the inside of the arm ring and under the plate that lays on top of the hand. Then i used Velcro to tighten it all up.
I used springs and fishing line to attach the fingertips.
Latest recomended parts for complete hANDi:
Hand_ring_3_1.stl
overhand_2_2_left.stl or
overhand_2_2_right.stl
thumb_stag_2_2__45_anlge.stl or
thumb_stag_2_3_lower_angle
hand_stag_2_1.stl or
hand_stag_straight_1_1.stl
fingertip_2_0_thumb.stl
fingertip_2_0_middle_fingers.stl x3
fingertip_2_0_pinky.stl
Knut 2 or Knut or to easy tighten the lines:
Addon_hANDi_pennholder_1_1.stl (file here or in thing page Add on hANDi pen holder)
UPDATES:
Added video and comparison photo.
Showed his physiotherapist and got big thumps up :)
Designed a New thing to make it easier with all the knots.. Meet Knut
New thumb strut with 45* angle and two holes for the line for different thumb length.
New Overhand parts with double holes for the line. This to easy fit different finger length.
New version of Overhand parts, now with mount holes for addons.
Designed a addon, a pen holder, see pictures below.
New hand ring for better stability and lower filament use ;) bigger but smaller!
New pictures of latest hANDi version with new arm ring and add on :)
New Thing: Knut 2
New thumb strut with a different angle, our OT recomended us to try this one :)
Hope my English is understandable ;)