Weekly Progress Reports (see sidebar), the Gantt chart, and this Project Management page should be printed out before meetings with the sponsor and instructor.
All team members should be able to explain all items on the progress report.
Place a "*" at the beginning of the title of the active week Progress Report (see * in sidebar).
MAE 156A
Team #1 (Team Capillary)
03/14/2017
Problem Definition Worksheet
Project Objectives
High Priority Objectives
Prevent device failure (no kinking / skipping of needle)
Correct insertion of catheter into subcutaneous tissues (correct depth)
Maintain consistent force/velocity of insertion
Second Priority Objectives
Injection should be fast enough to minimize pain
no one wants to use the device if its usage hurts the patients
Easy to use (ergodynamics)
Aesthetically appealing to the patients
Automated inserting system to minimize user error
Other Constraints and Issues
Preferably no spring
Size of helicon shape (gauge of wire, length of wire, radius of helicon shape)
Size of device
Budget of $700
User testing / feedback
WOW Design Solution
Integrated injection system which does not require any external devices to inject and deinject the stylet (self-contained system)
Risk Reduction Objectives
What force/velocity for helicon shape?
What if the polymer coated stainless still has no enough lateral force (stiffness)? And its spring constant?
How to convert potential energy to rotational force?
Example: Mechanical corkscrew
Materials and energy storage (rigidity of material and resistance from the skin and fat)
Proper material to store constant potential energy - Spring’s stiffness changes over time?
How we can make sure the tubes are sticked to the body (adhesive)
How we can easily remove the helicon shape needle after it injects the catheter ?
How we can make sure to extract the helicon shaped insertion
How to make sure the needle is inserted with helicon shape
What kind of material is okay to use with body
No user experience?
Risk Reduction Strategy
List areas of risk and strategy that will be used to eliminate risk really in the design process.
Referring to previous analysis of linear insertion (force/velocity) and anlyze the data for rotational insertion
Research human skin reaction with different materials
Understanding materials which can irritate skin
Examine a prototype with different skin tissues
Artificial tissue, pork butt, and etc
Clear documentation on the project website & Google Drive
Active communication among the team members and stakeholders through client liaison
Intermediate Milestones
Rough sketchy of prototype (Visualization)
3D CAD drawings of prototype (Animated Visualization & Energy Analysis)
Production of prototype
Testing of prototype & Receiving feedback from client and other stakeholders
Individual Component Analysis Topics
Maverick’s Interest
Energy storage and delivery method
Maverick’s Pick: Energy storage and delivery method
Dohwan’s Interests
Required force/velocity for penetration
Polymer coated stainless steel’s stiffness
How to convert potential energy to rotational force?
How we can easily remove the helicon shape needle?
Dohwan’s Pick: Required force/velocity for proper penetration
Related project objectives
High: Prevent device failure (no kinking / skipping of needle)
Second: Injection should be fast enough to minimize pain
Ryan’s Interests
Adhesive, infusion set hub
Safety during transport, prior to injection of infusion set hub
Soaker hose design
Effect of insulin dispersing at multiple side ports compared to traditional injection methods
Ryan’s Pick: Infusion set hub, providing sharp safe design
Peter’s Interests
Material interaction with skin/fat
Ease of use considering little user experience
Adhesive
Peter’s pick: material interaction with skin/fat
Weekly Meeting Time with sponsor:
Tuesdays at 2:30pm (via Phone/Video Call from Irvine)