COVID_CLAMP

Last crawled date: 1 year, 10 months ago

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CC BY-NC-SA

Because of the covid 19 crisis in early 2020, I was contacted by a local second year medical student from the University of Ottawa, Mina Boshra, who was interested in designing a 3D printed clamp for the intubation tubing used on the hospitals ventilators. Mina has an interest in curating CAD models for medical uses. He received feedback from the doctors with which he was working, that they were running out of the standard and expensive kosher clamps (typical used in surgeries). They wanted to see if a cost effective 3d printed alternative could be used.

I worked on the design for a few weeks, with many iterations along the way. I didn't have access to the correct tubing from the beginning so I used a stand in tube for the first iterations which was too soft. We quickly realized that this wouldn't work so Mina shipped the correct tube and I was able to move forward quickly. The original design iterations focused on keeping things simple and included an integrated flexible hinge, but the 11mm intubation medical tubing has VERY thick walls and is not easily squeezed. It requires ALOT of force to get it to a full flow stop closure. My original designed weren't going to work, the plastic hinge wasn't strong enough. The design evolved into a "pliers" type design with integrated latch clip. I feel this is the only method to allow for the sort of force necessary to get a full stop closure.

Print details:
No raft
LH = .15-.25
Infill = 40%+
M5 screw, 20-25mm long, use a 13/64 drill bit to clean up the hole


Your job:

Distribute this file around the world, built upon it and make it better. This design works great but one of the requests of the doctors was to have it be removable with one hand. The current design requires two handed removable. I think with some tweaking to the latch, it could be made to hold closed, yet still be able to be flicked open with a little pressure from fingers. Also, I wanted to test out if a 3d printed "bolt" or pivot could work instead of having to use an M5 bolt. This way there would be no need to source the hardware....

For further details regarding this project, please contact
Mina Boshra
mbosh103@uottawa.ca
or myself
truespecID@gmail.com

Let's help save some lives.