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SVAT Midsemester Design Review

SVAT Midsemester Design Review. February 19, 2013. Overview. Simon Leg Liam Leg Project Sew Microprocessor Hippotherapy. Simon Leg. Team Members: Rhiannon Olschansky, Jennie Boehm, Daniel Delacruz, Sean Kim, Kyle McNulty. Situation.

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SVAT Midsemester Design Review

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  1. SVAT Midsemester Design Review February 19, 2013

  2. Overview • Simon Leg • Liam Leg • Project Sew • Microprocessor • Hippotherapy

  3. Simon Leg Team Members: Rhiannon Olschansky, Jennie Boehm, Daniel Delacruz, Sean Kim, Kyle McNulty

  4. Situation Simon, a 4 year old boy, was born with a limb defect. No hip, knee, fibula, patella, missing most of femur. Currently has an above-knee prosthetic that does not allow for full range of motion.

  5. Simon’s Current Prosthetic

  6. Basic Idea: Lucas Leg Lucas was born with a condition known as Proximal Femoral Focal Deficiency (PFFD). He had an underdeveloped femur but had almost complete range of motion in his ankle. We plan to follow the basic design of Lucas’ previously designed prosthetic.

  7. Basic Idea: Lucas Leg Innovative gearbox design that enables movement similar to that of a real leg. The gearbox converted the range of motion in his ankle (about 40 degrees) to produce the range of motion similar to that of a knee joint (about 90 degrees).

  8. Adapting • Currently, our team is: • replicating the parts of the Lucas Leg in AutoCAD • in The Redesign Phase: making adjustments to the part dimensions to fit Simon’s specifications • Brainstorming other possible solutions • Complete by the end of the semester

  9. Simon’s Specifications • Height: 3’ 3” • Weight: 35 lbs. with his prosthetic • Cap • Left leg: • Hip to knee: 8” • Knee to ankle: 9” • Right Leg: • Hip to knee: N/A • Knee to ankle: 6” • Capabilities with current prosthetic: • Walk • Run (more of a skip) • Stairs • Learning to swim • Riding a bike (with difficulty)

  10. Possible Solutions • Piston Design Lucas Leg

  11. We welcome any Questions, Comments, and recommendations.

  12. Liam Leg Kelsey Wasilczuk, Jessica Place, Orla McGee, Lauren Kelso, Stephanie Eichman

  13. Our Client • 10 year old boy • Left knee is 4.5 inches higher than the right one

  14. Running/ Walking

  15. Current Activities • Can get along almost better without prosthetic • Tried sports, but cannot play right now • Soccer

  16. Design Requirements • Walk • Run • Ride a bike • Go up and down stairs • Quiet(no squeaking)

  17. Brice’s Prosthetic

  18. Modifications • Brice’s foot was amputated, so adding a “foot plate” similar to the one on current prosthetic • How clothes will fit over the new prosthetic • Dimensions of parts • Currently drawing parts in AutoCAD

  19. Rapid Prototyping

  20. Future Plans • Alter dimensions of AutoCAD drawings • Machine parts • Foot plate options

  21. Questions/ Comments?

  22. Project Sew Presented By: Hadley Stuart, Dawn Tse, Irene Simfia, Michael Dziekan

  23. Client Background • Client: Mary Lou Lawson • Medical Background: amputations due to complication during surgery • Purpose: To design a right hand prosthetic index finger to enable her to sew

  24. Problem Statement • The goal is to design a device(s) that can be used by Mary Lou Lawson to give her the abilities that she had before her fingers were amputated. • This device’s main task would be to enable Mary to be able to sew.

  25. Design Requirements • Tasks she would like to perform: • use a pair of scissors • wear jewelry • tie knots while stitching • The prosthetic device should not cause her any harm or worsen her condition.

  26. Issues With Previous Design • Finger is too long • Does not stay on • Hard to control

  27. Updated Design Requirements • She is only interested in the index finger • The material used must allow adequate grip on the needle • The device must be simple and easy to use

  28. Concepts • Finger Mold • Modify the existing device

  29. Plan of Action To be completed in 3 weeks: • Create several prototypes • Have a new design • Bring to Mary Lou and get feedback

  30. Questions?

  31. Microprocessor Lindsey Gengelbach, Iyll-Joon Doh, and Lee Georgakopoulos

  32. Why? • Three current projects require at least one microcontroller to read data. • BALL • FATIGUE • HEC HARDWARE • Each project has had some delay due to lack of knowledge of microcontrollers.

  33. Progress and Learning • The first five weeks of the semester were for learning about microcontrollers • LED activity • Graphing with a potentiometer • Outputting an ASCII Table and ASCII readings • Example video of activity:

  34. Fatigue • Purpose is the help physical therapists quantitatively measure muscle fatigue in patients. • Use multiple microcontrollers with accelerometers to record the force.

  35. Ball • Ball that contains a microcontroller with an accelerometer to record the force of a patient’s kick while the therapist can see the results on a graph. Arduino Uno ADXL 345

  36. HEC Hardware • Arduino will be use to communicate between the hardware and the software of the project. • A piano key design will complete the circuit so the information can be received by the ‘hit’ on the drum pad.

  37. Goals

  38. Questions and/or feedback?

  39. Hippotherapy David Schiffmiller Tessa Groll Chloe Morrical Matthew Jones

  40. What is Hippotherapy? • Hippotherapy • Aphysical, occupational, or speech and language therapy treatment strategy that utilizes equine movement • Our target • Children with core and trunk muscle defects http://www.americanhippotherapyassociation.org

  41. Project Partner Needs Hippotherapy… Need it for cost for the parents and for benefit of children System that simulates horseback riding for children who have underdeveloped muscles allowing children to gain: Strengthen core muscles Posture Motor function Balance Small children around ten Debilitating illnesses and movement dysfunction Poor posture Limited mobility

  42. Project Specification Overview Two Designs: • Motorized • Motorized horse has been put on hold while we finish non-motorized • Non-Motorized

  43. Motorized • Small disc will rotate from motor • Saddle will move on disc • Step 2 for children • More levels of speed • English saddle • Not much to hold on to • Requires more use of abdominal and leg muscles

  44. Non-Motorized • Whole frame • Frame will create up down motion because of CAM • Back oval wheel • Step 1 for children • Western saddle- easier to hold on to • More comfortable

  45. Pictures of Current Frame

  46. New Wheel System Ideas • CAM system with round wheels • Front wheels spin freely • Back wheel controls cam axle via chain

  47. Camshaft System • 2 offset cams on front axle • Each rotation creates rocking motion

  48. Back Wheel • Oval shaped • 8” by 7” • Easier to pull for therapist • Will still add a bump • Not too serious of a bump • Horse does not naturally do that

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