Skills Applied

Technical Skills

<aside> ✅ Sketching

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<aside> ✅ Prototyping

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Soft Skills

<aside> ✅ Collaboration

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<aside> ✅ Project Management

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Public Speaking (3MT) & Script Writing

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Overview

For DP1, we created an ostomy device for a colostomy patient that is easily adjustable and comfortable for strenuous exercise, since excessive adjustments cause the ostomy pouch to loosen and/or fall off the coupling.

Patient Profile

<aside> 🩺 Our patient jogs, bends and twists often in her daily life. However, she has issues with her ostomy pouch constantly falling off as a result of frequent adjustment, which loosens the snap function.

She uses a two-piece pouch with a convex base plate/flange that is not flexible. </aside>

Objectives and Constraints

Objectives	Constraints
Comfortable	Flexible Flange
Cost-efficient	Secure clip/snap
	Easily adjustable & rotatable along the coupling
	Long lasting & durable
	Thin coupling

Convex Flange

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Two-piece pouch

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Final Deliverables

Our Solution: The O-SAC

<aside> 📌 O-SAC is the spinnable, adjustable, and convenient addition to an ostomy bag. It is a spinnable bearing system with solid walls of hard plastic that allow for a more sturdy and durable design. Releasing a jar-like latch unjams the bearings to create a spinnable mechanism separate from the pouch and flange.

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Form & Function
Fabrication & Assembly
Device/User Interaction

Click play to see our prototypes in action!

Our product’s logo.

Design Process

Sketches

Initial Sketch

<aside> 📏 The first sketch features a spinnable ring at the base of the coupling. The ostomy bag does not have to be detached every time that it is moved out of the way. Pushing both buttons on either side unlocks the spinning function.

Button has two settings similar to that of a micropipette. The first push loosens coupling for rotation and the second removes the coupling.

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Pros	Cons
Spin feature is easily unlocked; great for runners	Buttons are bulky/uncomfortable
Ambidextrous	No air-tight seal

Second Sketch

<aside> 📏 In our initial sketch, we were unsure of which mechanism will allow the device to spin. We decided to use a ball-bearing mechanism, similar to that of a fidget spinner. The spinning mechanism is locked by closing a latch that deforms the clamp and jams the bearings. At this point we had not yet decided how to incorporate the clamp.

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Uses a clamp mechanism similar to that of a jar.

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