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Ergo-Arm Study Oct 2002 DesignWorks The Need... “Scientific evidence shows that musculoskeletal disorders of the lower back and upper extremities can be.

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Presentation on theme: "Ergo-Arm Study Oct 2002 DesignWorks The Need... “Scientific evidence shows that musculoskeletal disorders of the lower back and upper extremities can be."— Presentation transcript:

1 Ergo-Arm Study Oct 2002 DesignWorks The Need... “Scientific evidence shows that musculoskeletal disorders of the lower back and upper extremities can be attributed to particular jobs and working conditions – including heavy lifting, repetitive and forceful motions, and stressful work environments…but the problem can be reduced with well- designed intervention programs.” National Academy of Sciences Report (1/18/2001) FY 02: 62% LBNL DOE-Recordable cases caused by poor ergonomics (Strains/Sprains, CTDs & RSIs). FY 02: LBNL Property Management dBase inventoried > 9,400 computers (desktops and laptops) issued to employees. 7/99-8/02: 20% LBNL employee visits (168) to Health Services triggered by computer use. 4/85-6/02: 145 WComp “ergo claims” resulting > $2M incurred costs and 13,602 days of TD/Loss Work Days (productivity).

2 Ergo-Arm Study Oct 2002 DesignWorks The Flow Idea Engineering Studies Lab set up Concept generation Hardware Fab, Mod, Iterate Testing and Evaluation Screen candidates Invention disclosure Engineering development Industry CRADA Commercialization Acquire instrumentation Refine Evaluation Criteria Develop Engineering Prototypes Conduct Engineering tests Conduct Human tests Field Test $ $ Industry Solution Development Funding LBL Presentation McGraw Presentation Seed money $ Production Prototype Funding $ Industry Presentation Product Development Phase IPhase IIPhase III Develop Product requirements Design for manufacture Produce production prototypes Conduct product testing

3 Ergo-Arm Study Oct 2002 DesignWorks The plan The overall plan is to study, design, and develop practical ergonomic support devices. And to refine appropriate designs into applied solutions of interest to Manufacturers. –Use LBNL/Engineering skills and expertise to provide public benefit in an area that is ubiquitous and in need of significant improvement. –Offer good potential for commercialization & subsequent income stream to LBNL. –Address area of interest to all parties involved: DesignWorks, EH&S, EETD, LBL. Conduct a 3 phase program : –Phase 1 Set up lab and test facilities. Generate concepts, Fabricate Prototypes. Fabricate, test, and screen proposed solutions. –Phase 2 Acquire instrumentation Refine evaluation criteria. Develop Engineering prototypes. Conduct quantitative evaluation and Human tests. Field test –Phase 3 Develop Product requirements Design for manufacture Produce production prototypes Conduct product testing

4 Ergo-Arm Study Oct 2002 DesignWorks Engineering Studies Lab set up Dedicated Lab space in DesignWorks development Laboratory (77-2xx) {picture} Basic ‘Tool-up’ including Tool kits, Shop equipment, and Software. { Lists } Concept generation Early on, the team adopted a structured iteration cycle to accelerate the development process. Access to and use of the DesignWorks ‘Brainstorming’ team establishes a range of options. Sketches, crude mock-ups, hand-calculations, approximate measurements refine options Next Concept based on tested results in real-time and is realized in hardware. {Pictures, lists} Hardware Hardware focused on applying load points to the human arm and shoulder. With appropriate fixtures we can both apply and measure forces and vectors between points { Pictures, lists } Body supported systems Device reroutes forces from one part of the anatomy to another { Pictures, lists } External support systems Device absorbs or applies forces to the anatomy { Pictures, lists } Testing and Evaluation Mechanical measurements and temporary test set ups set practical range of forces for prototypes and fixtures { Pictures, lists } Human try-outs brought sharp focus to iterations of practical mechanical fixtures and prototypes { Pictures, lists } { Need to formalize our evaluation data }

5 Ergo-Arm Study Oct 2002 DesignWorks Candidates Body supported systems Device reroutes forces from one part of the anatomy to another { Pictures, lists } External support systems Device absorbs or applies forces to the anatomy { Pictures, lists }


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