Rehabilitation Engineering Group #13 Oral Presentation #4 13 March 2007 Andrew Carroll Nina Connell Kristin Duncan Jennifer Young Advisors: Mark Richter Aaron Fitzsimmons

Advisors Dr. Mark Richter Dr. Mark Richter Mechanical Engineering Mechanical Engineering MAX Mobility, Brentwood, TN MAX Mobility, Brentwood, TN Aaron Fitzsimmons, CP, OTR Aaron Fitzsimmons, CP, OTR Certified Prosthetist, Registered Occupational Therapist Certified Prosthetist, Registered Occupational Therapist Industry expert, prosthetist at Superior Orthotics and Prosthetics in Nashville, TN Industry expert, prosthetist at Superior Orthotics and Prosthetics in Nashville, TN Tina Fitzsimmons, OT Tina Fitzsimmons, OT Occupational Therapist for Metro School District, Assistive Technology Occupational Therapist for Metro School District, Assistive Technology Industry expert on working with special needs children Industry expert on working with special needs children

Project Background Client Details Client Details 8 year old male, only child 8 year old male, only child Physical disabilities in upper extremities Physical disabilities in upper extremities Client currently has a personal assistant Client currently has a personal assistant Cannot use the restroom by himself Cannot use the restroom by himself Is able to pull down his pants Is able to pull down his pants Work Completed By Others Work Completed By Others ES 101 students at Vanderbilt ES 101 students at Vanderbilt Private assistive technology companies Private assistive technology companies

Project Definition/Overview Goals Goals The client and his family have expressed the need for a wiping device, which will be completed by April The client and his family have expressed the need for a wiping device, which will be completed by April We plan to complete our iterative process of building prototypes and improving them based on client feedback. We plan to complete our iterative process of building prototypes and improving them based on client feedback. Desired Characteristics Desired Characteristics Easy install Easy install Sanitation Sanitation Compact and portable Compact and portable

Market Potential There were 1,285,000 persons in the U.S. living with the limb loss (excluding fingers and toes) in There were 1,285,000 persons in the U.S. living with the limb loss (excluding fingers and toes) in The prevalence rate in 1996 was 4.9 per 1,000 persons. The prevalence rate in 1996 was 4.9 per 1,000 persons. The incidence rate was 46.2 per 100,000 persons with dysvascular disease, 5.86 per 100,000 persons secondary to trauma, 0.35 per 100,000 secondary to malignancy of a bone or joint. The incidence rate was 46.2 per 100,000 persons with dysvascular disease, 5.86 per 100,000 persons secondary to trauma, 0.35 per 100,000 secondary to malignancy of a bone or joint. The birth prevalence of congenital limb deficiency in 1996 was per 100,000 live births. The birth prevalence of congenital limb deficiency in 1996 was per 100,000 live births. The prevalence rate is highest among people aged 65 years and older ~19.4 per 1,000. The prevalence rate is highest among people aged 65 years and older ~19.4 per 1,000.

Alternative Solutions Portable Bidet Portable Bidet Doesn’t work because it is too difficult to set up Doesn’t work because it is too difficult to set up Does not solve social issues Does not solve social issues Client does not want a bidet Client does not want a bidet Patent number:

Current Status Prototype A constructed December 2006 Prototype A constructed December 2006 Presented to prosthetist and advisor Presented to prosthetist and advisor Visited client’s house to ascertain personal needs Visited client’s house to ascertain personal needs Prototype B tested January 2007 Prototype B tested January 2007 Hands-on testing by client Hands-on testing by client Usable but still crude Usable but still crude Prototype C tested March 2007 Prototype C tested March 2007 Improved custom fit on most toilets Improved custom fit on most toilets

Prototype A

Prototype Iteration Problems with Prototype A Problems with Prototype A Mounting location Mounting location Unnatural motion Unnatural motion Potentially high device failure rate Potentially high device failure rate Unrealistic materials Unrealistic materials Has to be preloaded Has to be preloaded

Prototype B

Prototype Iteration Improvements made by Prototype B Improvements made by Prototype B Mounted on toilet vs. wall Mounted on toilet vs. wall Front to back wiping Front to back wiping Highly stable, improved base strength Highly stable, improved base strength More comfortable and realistic materials More comfortable and realistic materials Self Loaded Self Loaded Problems with Prototype B Problems with Prototype B Finger holes too stiff Finger holes too stiff Not universal Not universal Materials and design not comfortable Materials and design not comfortable

Prototype Iteration Solutions realized by Prototype C Solutions realized by Prototype C Foam inset for tighter fit Foam inset for tighter fit Improved wedge shape Improved wedge shape Finger holes (Swiffer-like design) Finger holes (Swiffer-like design) Problems with Prototype C Problems with Prototype C Swiffer-like finger grips difficult to get used to Swiffer-like finger grips difficult to get used to Foam made toilet seat too high Foam made toilet seat too high Polyethylene arm not rigid enough Polyethylene arm not rigid enough

Current Work Prototype C Completion & Testing Prototype C Completion & Testing Continue to tweak final design Continue to tweak final design Communication with AutoCAD expert Communication with AutoCAD expert Client Feedback Client Feedback Positive feedback from client and his family Positive feedback from client and his family Continued communication for final design Continued communication for final design

Future Plans Final Design Final Design Ease of use Ease of use Size Size Stability Stability Materials research Materials research Professionally Manufactured Product Professionally Manufactured Product Send to get machined ($300) Send to get machined ($300) Sole Supports is helping with AutoCAD software Sole Supports is helping with AutoCAD software

References DisabilityInfo. public/public/DisplayPage.do?parentFolderId=500 DisabilityInfo. public/public/DisplayPage.do?parentFolderId=500http:// public/public/DisplayPage.do?parentFolderId=500http:// public/public/DisplayPage.do?parentFolderId=500 Hosmer Products. Campbell, CA. Hosmer Products. Campbell, CA. Max Mobility. Nashville, TN. Max Mobility. Nashville, TN. RSLSTEEPER Prosthetics RSLSTEEPER Prosthetics Superior Orthotics and Prosthetics. Nashville, TN guidelines.htm Superior Orthotics and Prosthetics. Nashville, TN guidelines.htm guidelines.htm guidelines.htm

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