Wear Station Optimization for Knee Simulator Testing at Orthopaedic Innovation Centre
Loading...
Date
2017-12-06
Authors
Calsbeck, Derek
Hernandez, Israel
Onweni, Mercy
Smith, Jeremy
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
The purpose of this report is to present the completed design of a system to minimize fluid loss and setup time of the knee wear simulator test at the Orthopaedic Innovation Centre (OIC). The OIC currently experiences a high frequency of low-fluid alarms in their closed-loop lubrication system, resulting in testing delays and missed deadlines. The primary objective of the project is to redesign the reservoirthat containsthe lubricant so that fluid loss due to evaporationfrom the reservoir is minimized. A secondary objective is to ensure that the reservoir is simple to set up and maintain.An engineering design approach was used to develop a conceptual designbased on six criteria: quality of seal, volume, ease of setup, overall simplicity, ease of manufacture, and fail-safe reliability. The design was optimized,and a manufacturing plan was developedfor the reservoir.The final design uses a threadedlid that compressesan O-ring to seal the container. The reservoir has inlet and outlet ports for the lubricant positioned on the top surfaceof the container. A vertical rod protruding upwards from the floor of thecontainer serves as aguide for the magnetic level float. The entire design is made from 316 Stainless Steeland is compatible with the sterilizerused at the OIC. With the lid fully inserted, the reservoir has an overall height of4.319”,an outer diameter of 4.75”,and a wall thickness of 3/16”. The reservoir volume has been increased toapproximately735mL. The team is confident in the ability of the redesigned reservoirto perform as expected and meet theneeds of the client,based on the systematic methodology used to arrive at the final design.