Upper Extremity Exerciser & Nazareth PT Layout Redesign James Letts – Team Leader Eduardo Borges - ISE Dennis Bradford - ME Daniel Kelly - ME Renzo Salazar Najar - ISE Chris Reed – ISE Julie Watkins – ME Mark Perkins – ME Dr. DeBartolo – Guide Dr. Marshall - Guide

Two Parts:  Upper Extremity Exerciser  Physical Therapy Dept. Layout Redesign Also – Ramp/Platform mobility improvement

Upper Extremity Exerciser Background Information:  This project is sponsored by the NSF and completed for the Nazareth Physical Therapy Dept.  Studies show that patients who have lost the use of an extremity due to neurological trauma may regain some functional control of that extremity through repetitive motion.

Upper Extremity Exerciser Objective:  Design, build, and test a device to assist patient with movement of upper extremity.  Create assistance to raise the arm in front of the body while creating resistance to lowering the arm

Device Description Acrylic beam guides motion Bungee cord with ratchet provides adjustable force Backpack frame provides stability and base for vertical and horizontal adjustment

Upper Extremity Exerciser cont. Customer Needs: 1. Safety 2. Adjustability 3. Economical 4. Ease of Use 5. Assists natural arm movement

Design Specifications Design SpecificationImportance Unit of Measure Marginal ValueIdeal Value Starting position of extremity3Degrees05 Final position of extremity in sagittal plane flexion 9Degrees95100 deg. Weight of device9Pounds2520 Size of device9Inches 32-42” waist 5'2” to 6'4” height 28”-46” waist size 5'0"-6'6" height Force output9Pounds3 to 102 to 20 Total cost9Dollars Time to train3Minutes3010 % of population able to use hand grip(s) 3N/A75.00%100.00% Time to put on3Minutes74 Number of steps to operate9Steps42 Right or left side capable9BinaryYes

Design Progression – Original Concept to Current Design Guides to prevent beam twist Relocation of ratcheting device  Simplifies design Surgical tubing vs. bungee cord  FMEA, friction Device-to-extremity interface  Attachment specified by customer Original Concept Sketch

Current state of design Re-examine bungee cord elongation vs. force Beam deflection optimization Durability issues with acrylic  Life cycle testing

Schedule for Senior Design 2 Beam and Cord testing – March 23 rd Fabricate end bracket – March 28 th Complete device assy. – April 6 th Instruction Manual – April 13th Evaluate/Modify Prototype – April 26 th Complete prototype and final testing – May 16 th

Facility Background Instructional non-profitable physical therapy facility that attends patients recovering from strokes or other similar chronic health problems. Group and individual appointments. Neurological and orthopaedic clinic.

Existing Layout

Related Issues  Limited free space for therapy.  New equipment introduction.  Therapy devices are often blocked by patients at other devices.  Equipment presents unsafe obstacles.  Unnecessary equipment.

Therapist Must step over treadmill Exercise bike cannot be used Examples of Issues

Unnecessary items  Conference table  2 Copiers  TV  Fridge  File cabinets  Coffee maker  Microwave  Mat  2 Mirrors  Pedal bike  Mount with canes and walkers  Linens shelves  Treadmill  Trampoline  Screens  Chalkboard  Tumble forms (3 remaining).  One board.  6 chairs.

Facility redesign Action items for facility  Redesign floor layout Flow analysis Remove unnecessary items Include new equipment  5s Sort, Straighten, Shine, Standardize, Sustain  Maximize free space for therapy.

Monitor improvements Improve utilization of cabinets and shelves. Reduce frequency therapist avoids an obstacle.  Currently 50% of related activities Availability of equipment  Currently 25% obstructed/unavailable. Increase therapy space  Currently therapy space 580 sq. ft.

Ramp Modification Solution:  Add wheels and handles to make the ramp and platform easily movable  Before modification: 50 lbs. of force required  After modification: 16.7 lbs. of force required

Ramp Modification Problems:  Existing ramp and platform are heavy and awkward to move  Ramp and Platform weigh 50 lbs. each and need to be carried to an open floor area for use  As a result they are not used Objective:  Modify ramp and platform to be more mobile  Acceptable weight to lift for 10 th percentile female  Maintain current footprint for storage  Meets specifications for Physical Therapist use

Senior Design II Schedule Facility Layout  Observe Clinic in operation: Through March 30 th  Develop New Layout and Implement changes: Through April 30 th Ramp Modification  Order wheels and handles: By March 12 th  Assemble components to ramp & platform: By March 23 rd