John Graeme Dockrill | Mechatronics Engineering

6th Year Student at UBC | graeme.dockrill01@gmail.com

Urology Collector

February - June 2021


Project Overview

Developed Skills

  1. Consulted directly with a client to assess their needs and determine what they want exactly
  2. Prepared sketches and models and presented them to the client for feedback
  3. Printed and delivered several models to the client
  • Client Consulting
  • CAD Design
  • Product Design
  • Additive Manufacturing
  • Prototyping

Objective

This project is a consulting job through UBC Rapid, where the client wanted me to design a scale and two containers that can be used together in urology testing (either in the doctor's office or for patients at home).


Sketch of Uripan

Contact with Client and Inital Sketches

Before replying to the client's job request by email, I read through their provided information and prepared any questions I had before I could start on the project.

After contacting the client and arranging a meeting, I was handed the parts to get a better feel for what I would be designing.

I then prepared several sketches to show the client for feedback.


Section view of Uripan

Section view of Uripan with concept scale inside


Sketch of collapsible basin

Concept sketch of collapsible basin

Concepts of scale connection


Feedback on Sketches and Modelling

The client liked the sketches I had presented them and asked me to move forward with the collectors and the flat-bottom scale concept.

I prepared models in OnShape of the two different containers (Uripan and collapsible) along with the scale fitted inside and the collectors on top.

I zip-tied the strips to the frame to get a feel for how the lights would actually sit on the bike and how long the jumper wires would need to be to connect the strips.

Uripan OnShape model with collector inside


OnShape model of collapsible basin with collector


Section view of scale and collector

Centering the Collector

Once the models were completed, I came up with a way the collectors would be held in place on the scale (using a lip that goes over the scale's edge).

I also came up with an idea of how to attach the scale to the bottom of the collapsible basin. There were small holes around the bottom of the basin so I extruded small pins to fit through the holes

I modified the Uripan and the collapsible basin models to show to the client, so they could give some feedback.


Section view of Uripan model

Section view of collapsible basin model


Modifying the Collapsible Basin Collector

With the client satisfied about the changes to the design, they wanted me to make the collector a bit deeper and to include a small guide for the user to help place the scale in the basin.

After all of the modelling was complete,I began printing our the scale and collectors, but there was an issue with the large collector - it was too large to print in one go.

So I had to cut it into smaller pieces that could be printed separately.

Section of modified collector with guide (in red)


Full collector in Cura

Base of collector, cut to fit in print bed

Walls of collector, cut to fit in print bed


Final print that was delivered to client

Final Prints and Delivery

After completing all of the models and printing them out, they were personally delivered to the client.

The client was satisfied with the results and the CAD files were also given to the client so the design could be further developed.


Final Remarks

After completing this project, there are a few things that I would have done differently to speed up the process and reduce the amount of iteration needed in the design.

Firstly, I would have spent a bit more time coming up with concepts in the early stages to avoid creating some wasteful prototypes.

Though the solutions to some of the issues were well executed and in the end, the client was satisfied, so the project was overall a success.