manotech associates formal design review march 2, 2006 jina kim forrest liau david lin teresa wang
TRANSCRIPT
Manotech Associates
Formal Design ReviewMarch 2, 2006
Jina KimForrest LiauDavid LinTeresa Wang
Questions To Be Answered
What are we trying to do?
How are we going to make it happen?
Vision & Mission
Vision: To provide a method for producing a anatomically user-matched prosthetic hand that is accessible to low-income users in poor communities
Mission: To design a prosthesis fabrication process that 1) creates a anatomically matching hand for the user and 2) uses materials that are inexpensive, processable by the user, and locally available when possible
“Accessible to low-income users"?
Accessible Solution is ultimately an option for our target user, which include ultra-low income individuals located in poor, remote areas
How would we make the solution "accessible"?
Materials are: Inexpensive locally available when possible
Process is: Performed by individuals in the community utilizing everyday tools
”Anatomically user-matched"?
Proportional to user's body Mirror image of other hand
NO skin detail
How do we make it "user-matched'?
Four-step process Initial Mold Solid hand Reversible mold Final underlayer product
How will we make this happen?
Proof-of-concept that process is feasible Initial Mold Solid hand Reversible mold Final underlayer product
Optimize materials based on basic performance specs and accessibility criteria (∏p vs. ∏a)
Optimize process to maximize accessibility with acceptable performance
Schedule
March April May6 13 20 27 3 10 17 24 1 8 15
Init. Mold Solid Hand Rev. Mold Fin. Und. Prod. PrototypeMaj. Test.B. PlanPoster/present.
Materials Selection Process Optimization
Backup Slides
Materials
Mold Clay Stone powder Alginate Sugar/cellulose
Solid hand Gypsum Sugar/cellulose
Reversible mold RTV polyurethane RTV silicon Sugar/cellulose
Final Underlayer Product
rubber silicone Liquid rubber Liquid polyurethane foam
Risks
All: Cost, consistency, temperature Initial Mold: Distorted shape, long time to form, difficult take-off, sticking to skin, trace marks, brittleness, flimsiness, lack of detail
Solid hand: difficult extraction, lack of detail, difficult remediation
Reversible mold: Brittleness, flimsiness, inadequate reversibility, distorted shape, non-uniform thickness, lack of detail
Final Underlayer Product: Short lifetime, inadequate cosmetics, lack of detail, excessive weight
Clay Work
Clay Work
Clay Work
Clay Work