manotech associates formal design review march 2, 2006 jina kim forrest liau david lin teresa wang
TRANSCRIPT
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Manotech Associates
Formal Design ReviewMarch 2, 2006
Jina KimForrest LiauDavid LinTeresa Wang
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Questions To Be Answered
What are we trying to do?
How are we going to make it happen?
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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
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“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
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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
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”Anatomically user-matched"?
Proportional to user's body Mirror image of other hand
NO skin detail
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How do we make it "user-matched'?
Four-step process Initial Mold Solid hand Reversible mold Final underlayer product
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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
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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
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Backup Slides
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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
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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
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Clay Work
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Clay Work
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Clay Work
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Clay Work