1. Overview 2013 Senior Design: Novel Portable and Private Adult Changing Table James Carlucci 1, Cory Darden 2, Ryan Firman 2, Saman Rostami 1, Anna Sung 2 Dept. of Mechanical 1 & Biomedical 2 Engineering, University of Delaware, Newark, DE Advisor: Anita Singh, PhDSponsor: Alliance for Individuals with Dependent Care NeedsCourse: MEEG401/BMEG450 We would like to thank our sponsor, the Alliance for Individuals with Dependent Care Needs, our advisor, Anita Singh, PhD, Mr. Steven Beard, and the rest of the Senior Design Staff Acknowledgements MetricsTarget Value Weight50 lbs Compact VolumeSUV Trunk (15.2’’ x 49.1’’ x 41.7’’) Parts to Use5 Concealment100% Set up Time5 min. Rail SafetyHospital Bed Safety Rail Guidelines CleanlinessCleanable by disinfectant by caretaker(s) Final Design Metrics TABLE 1: List of top metrics with assigned target values determined by sponsor request, group discussion, or research. ComponentTest DescriptionMetricsValidation Privacy Visibility test, simulate rain & windy conditions Concealment 100%, stability maintained Rails & Table Frame Functionality, rails & frame sustain max load with a safety factor Safety Stability, abide by Hospital Bed Safety Rail Guidelines Material Wash simulation (1095 washes for 3-year daily use) Cleanliness Maintain structural & functional integrity; cleanable User Functionality Safety, functionality, ease of use, privacy; survey with volunteer Volunteer, Staff, Sponsor feedback Metrics achieved Portability Ease of portability; survey Staff feedback Portable, 5 min. assembly Background and Significance Over 15 million Americans suffer from some form of incontinence [1], the lack of bladder and bowel control. For adults, individuals requiring care for incontinence are limited to two-hour outings, and there is a lack of means by which incontinent care can be provided. Oftentimes, unsafe or expensive accommodations must be made on the fly. Needs A portable changing table with adjustable height and angle that provides privacy and comfort for the disabled and caretakers. Project Scope Develop a portable changing system to assist those caring for a developmentally disabled adult, such that incontinent care can be provided safely and privately in a variety of settings. Retrofitted Oakworks© Boss™ table to meet sponsor’s wants and needs. Added 1/8” thick aluminum backing to foam and vinyl for angling mechanism. Attached a “U” shaped bar to either side near the head of the table. - Allows the backing to be set at angles of 10 and 20 degrees. Four fiberglass poles attached via bolt and bracket to each corner of table. Nylon fabric cover surrounding assembly to allow privacy. Four PVC railings surrounding table, fit into individual aluminum brackets. - Locked vertically up or down via two pins for each bracket. - Overlap one another when the entire unit is folded in half. Folded up table can be rolled suitcase-style via two wheels on one side. FIG 3: (Left) Prototype with privacy mechanism tarp on; (Right) prototype with tarp taken down, privacy poles in upright position. Reference [1] Urology Care Foundation. “Incontinence: Surgical Management.” American Urological Association. TABLE 3: Testing procedures with description for separate components and overall user functionality. MetricsTarget ValueDataValidation Weight50 lbs.48 lbs.Exceeded Compact Volume SUV Trunk (15.2’’ x 49.1’’ x 41.7’’) 7 ¾”x 37” x 31”Exceeded Parts to Use 55 (Legs, poles, railing, angle, privacy mech.) Met Concealme nt 100% Met Set up Time 5 min2 min 10 sec (assembly); 40 sec. (disassembly) Exceeded Rail SafetyHospital Bed Safety Rail Guidelines Adhere to guidelines, held 200 lb Met Clean- liness Cleanable by disinfectant 1095 washes; fabric unchanged Met TABLE 4: Metrics validated by testing. Compo- nent Selected Design SafetyRailings MaterialVinyl Portability Luggage System Angle Bookstand Mechanism Frame BOSS™ Table PrivacyCanopy TABLE 2: Final concepts selected for the listed components. FIG 1: Generated ideas for the various components. (A) 8-panel folding privacy mechanism – top & side view; (B) canopy mechanism. (C) BOSS™ table frame; (D) telescoping legs. (E) Slotted teeth angle mechanism; (F) bookstand mechanism. Differentiate Components Privacy Frame Angl e Materia l Portability Safety B C D E F A Concept GenerationTesting Validation A B FIG 2: (A) Bookstand mechanism reiteration; from blocks to grooves. (B) Handle reiteration; from separate handle to using railings. (C) Privacy mechanism pole reiteration from pins to brackets. C A B FIG 3: (A) Compression- tipping test of 400 lbs rolled side to side. (B) Wash simulation of vinyl. unwashed vs. washed; no prominent changes. Unwashed Washed

2. Potential solutions for each component were weighed against the benchmark in a custom scoring system designed to evaluate how they addressed design metrics. Concepts scored via Likert scale (- 2 to 2) with benchmark assigned score of 0. Design metrics ranked in importance through sponsor input, team discussion, and research. Concepts were assigned a total score: summation of the multiplication of the Likert scale score and Pscore for each metric. Component Evaluation Sample Scoring Table Selected Concepts FIG 2: Sample scoring table for concept generation. Concepts weighed against benchmark via Likert scale (-2 to 2). Total score: summation of multiplication of the Likert scale score and Pscore for each metric. Performed testing proved that design met all of the required metrics. Weight: Final weight 48 lbs (via scale) Size-related metrics: Measured in the appropriate manner, X’’ x Y’’ x Z’’ Parts to use: Counted in user testing: X part minimum Safety: 2 straps, Railings do meet FDA Safety Guidelines and held a X pound load Wind/Rain Simulation: Initial failure. Redesign of privacy allowed for retention of 100% concealment and a waterproof design throughout testing. Cleanliness: Fabric was unchanged after 1000 washes. (Pictured?) Stability: Table held 400 lbs. of evenly distributed load & offset. Ease of use (including set up time): Survey results included: Testing Method Visibility test, wind & rain simulation Compression-Tipping test Strength, abrasion, piling resistance Volunteers (sponsor provided) Performed by Stockley staff