Fall 2007 Design Review

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Faculty Advisors:

• Eric Nauman

• Andrew Brightman

• Robert Hannemann

Team Teaching Assistant:

• Theresa Gordon

Team Leader:

• Nolan Jones

Project Leaders:

• Josh Compton – Vent Team

• Alvin Chen – Toy Team

• Ryan Fraley – AAC Team

SVAT Team

SVAT Project Teams

1. Vent Project• Develop a safe transportation method for

parents and patients on ventilators.

2. Toy Project• Develop a fun toy to quantitatively measure

patient strength and reaction time.

3. AAC Project• Develop a dynamic website to help children

with speech disabilities communicate.

Josh Compton, Nolan Jones, Jason Toler, Daniel Oegerle, Abish Malik, David Gordon

SVAT - Vent Team

Vent Project Team

Project Goals

• Develop an improved method of transport for parents of infant patients on ventilators through St. Vincent Hospital Rehabilitation Center.

– Consolidate equipment to decrease travel preparation time and difficulty

– Organize equipment to remove potential hazards to both child and parent

SVAT - Vent Team

Current Transport

• Suction and oxygen tank hang off stroller handle• Apnea monitor and ventilator on 2nd extended seat• Ventilator back-up battery in basket under seats• Ambu bag on top of stroller canopy

SVAT - Vent Team

Large Equipment

Suction machine in its bag Ventilator

ApneaMonitor

OxygenCanister

SVAT - Vent Team

Main Equipment

SVAT - Vent Team

Equipment Length (in) Width (in) Height (in) Weight (lbs)

Ventilator 11 4 14 14.8

AC Adapter 4 2.5 6.5 Not Available

Back-up Bettery 11 9.5 9 28.2

Apnea Monitor 9.5 8 7.5 12

AC Adapter 3.5 3 5 2.8

Oxygen Tank 6.5 6 15 8

Suction Machine 10 7 13.5 9.8

AC Adapter 4 3 6 2.8

Tubing 72 - - Negligible

Previous Design• Spring 2007 Concept

– Single container carrier

• Made of PVC foam by Meyer Plastics

• Organize equipment by fit/nursing-based orientation

– Eg. suction canister is upright

• Ventilator hangs from a bracket on side closest to the child

• Plastic dust cover added to protect equipment (not shown)

SVAT - Vent Team

Velcro straps for tubing

Apnea Monitor

Oxygen Tank

Suction Machine

Equipment Setup in Previous Design

Project Partner Interaction

• Met project partner (St. Vincent’s)– Angela, occupational therapist

• Stated therapists no longer need the stroller box design. They want a design to fit safely in a car and that can be used at home.

SVAT - Vent Team

Previous Design Assessment

• Demands of partner have changed due to a new location in the hospital

• Safely fit carrier into a vehicle• Compatible with any stroller design

–Current stroller design is not used by all parents• Mount equipment so that it is accessible by the

driver• Make the carrier easy to use

–Easily secures into vehicle–Equipment only fits one way–Light weight for easy transport

Concerns of previous concept:

SVAT - Vent Team

Current Prototype Design

SVAT - Vent Team

Apnea Monitor

Suction Bag

O2 Tank

Suction Machine

Ventilator Clip

Design Rationale

SVAT - Vent Team

• Project Partner wanted in-home use

• Two boxes to better distribute weight

• Top box smaller to allow tubes to easily connect

• Four wheels enables to roll around house and stand alone

• Extendable handles allow ease of movement while maintaining L.C.G.

• Ability strap on back on passenger seat and anchor to frame for added safety

• Better secure O2 tank

Design Constraints• Accessible controls on:

– apnea monitor – ventilator screens

• Easily access:– ambu bag– suction machine’s

• “on” button• suction tube

• Minimized weight of device for easy handling• Made of an aporous material

– Must withstand routine disinfection

SVAT - Vent Team

Work to be Completed

This Fall:

1. Finish carrier frame

2. Build two boxes for equipment

3. Test carrier in car

SVAT - Vent Team

Project Timeline

SVAT - Vent Team

Week #                          

Activity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orient and plan                                

Complete Paperwork for Delivery                                

Deliver Old Prototype                                

Research car safety                                

Feedback from PP                                

Modify carrier prototype                                

Design review                                

Deliver vent carrier                                

Evaluation period                                

Modification ideas/plans                                

End of Semester report                                

Next Semester

• Deliver prototype

• Feedback from PP

• Modify prototype design

SVAT - Vent Team

SVAT - Vent Team

QUESTIONS AND COMMENTS?

Quantitative Measurement Toy Project Team

Alvin Chen and Heather Barrett

St. Vincent’s Needs

• Therapists at St Vincent’s currently measure muscular strength subjectively, or with a hand dynamometer

• St Vincent’s Need: Want a way of measuring the muscular strength and reaction time of pediatric patients quantitatively

SVAT – Toy Team

Problems with Hand Dynamometer

• Problems– Expensive– Too heavy for the

child– Awkward to handle

and squeeze for the child

– Not fun

SVAT – Toy Team

St Vincent’s Pediatric Patients

• Pediatric patients have:– Cerebral Palsy 40%– Autism 30%– Orthopedic 10%– Brain injuries 5%– Muscular Dystrophy 5%– Genetic Disorders 5%– Down Syndrome 5%

• Toy Team works with Shannon– Approximately 40 pediatric patients– Most are 4-7 years old

SVAT – Toy Team

How our Toys meet St Vincent’s Needs

• Fun interactive toy for the children

• Measures their reaction time and muscular strength quantitatively for the therapists– The physical and occupational therapists can

use the output data to gage the effectiveness of the physical therapy and to see the progress of each pediatric patient

SVAT – Toy Team

Quantitative Measurement Toys

• Whack-a-Mole Generation 1

• Squeeze-o-Meter

SVAT – Toy Team

Electronic Components• WAM

– Microcontroller– LCD screen– Accelerometers– LEDs– Assembly language (AsmIde)

• Squeeze-o-Meter– Linear Potentiometer– Analog to Digital Converter, interfaced through USB– Excecutable Created with LabVIEW

SVAT – Toy Team

Squeeze-o-Meter• Engage muscles for both arms

• Two positions– Arms extended

• Biceps, Brachioradialis, Pectoralis Major, Triceps, Deltoids

– Arms Close to Trunk• Biceps and Deltoids.

• Handles for therapist to hold, for physically weaker children. Also allows for different variations of positions

• Uses Linear Potentiometer to measure spring compression.

SVAT – Toy Team

New Squeeze-O-Meter Design

Plastic rings to stabilize spring as well as potentiometer.

Moving cap attached to potentiometer.

Fixed end with threaded cap, allowing for spring to be changed.

SVAT – Toy Team

Prototype of Squeeze-O-Meter

SVAT – Toy Team

Electronic Components

1. Core sensor- Linear Potentiometer. Linear potentiometer provides different

voltage values depending on different displacement of compression.

2. Analog Digital Converter- converts the voltage reading from the potentiometer into a value which the computer can comprehend

SVAT – Toy Team

Analog Digital Converter

SVAT – Toy Team

Mechanical Components

1. Lexan Tubes and disks Durable more than 200times of glass and 30times of

acryl. Thus, make the toy more durable in the environment where kids punch and kick the toy around.

2. Springs – with varying spring constants of 25/4.5(lb/inch)3. PVC Caps 4. Bearings- Plastic rings. Reduces friction between the

cylinder and the caps. 5. Bolts- To provide more durability when assembling

components. 6. Threading – To provide ability to interchange springs by

removing caps.

SVAT – Toy Team

QUESTIONS AND COMMENTS?

SVAT – Toy Team

AAC Project

Ryan Fraley and Harsh Achukola

St. Vincent’s Problem

• Our team is working with Amy Riego and Dana Stewart.• Work with young children with speech impairments.• They use various different devices.

• Commercial devices are very expensive.• Health care for many children will only cover one

device in a lifetime.

• Need for cheaper alternatives to commercial devices.

SVAT – AAC Team

St. Vincent’s Current AAC Devices

Picture Board Handheld Touch Screen Device

•Simple word identification

•Time consuming to modify

•Therapist records each word

• Aids in more complex communication

•Easy to modify content

•Ability to form phrases or use for simple word identification

SVAT – AAC Team

Project Specifications

• Inexpensive– A communication tool that is significantly

cheaper than commercially available solutions

• Easy to use– Small learning curve for therapists and

caretakers– Comfortable and customizable interface for

patients

• Versatile– Adaptable content for multiple user accounts– Customizable format for various

communication and mobility levels

SVAT – AAC Team

Solution – Dynamic Website and Touch Screen

• Solution: Use a touch screen interface with a dynamic website to help children communicate.

• Website must be dynamic and customizable for each patient.– User account for each patient– Specify what content is on each page

• Functionality similar to high end commercial devices– Navigate using buttons that contain images

– Sounds are played when pushing buttons

SVAT – AAC Team

Website Interaction Schematic

SVAT – AAC Team

Main Directory

Food

School Toys

Family

•Snacks•Drinks•Fruits

•Mom•Dad•Sister•Brother•Grandma

•Train•Ball•Bubbles•Video Games

•Book bag•ABCs•123s•Colors

•Pudding•Yogurt

•Cookies•Pretzels•Crackers

•Milk•Juice•Water

•Banana•Grape

•Red•Yellow•Blue•Green•Black

Food

Family Toys

School

Book bag

Fruits

Drinks

Snacks

Example Navigation Chart

* Each menu will have image and audio/video option.

•Ruler•Crayons•Books

•1-10

•A-Z (song)

123s

Color

ABCs

About Me

School Manners

Food

Example of Communication Device

Dynamic Implementation

• Primarily utilizes PHP and MySQL database backend.

• Databases are used to store patients settings– Images– Sounds– Preferences– Communicator

SVAT – AAC Team

Work Done Last Semester

• Prototype version completed– Given to St. Vincent for testing and feedback

• User manual started

• Purchased hosting server

SVAT – AAC Team

Work Done This Semester• Revised “add and modify content” page

– Simpler to use

• Addressed issues with Internet Explorer

• Brainstormed ideas for further applications of website– PDA– Hospitals– Children at home

• Completed user manual

SVAT – AAC Team

Add and Modify Content

• Problem– Previous process was complex and difficult to

understand– Time consuming

• Solution– Create a drag and drop process using AJAX– Allows for “instant” updating– Simpler to understand

• Demo

SVAT – AAC Team

Internet Explorer Issues

• Problem– Internet Explorer was not playing sounds

• Solution– Sound Manager 2

• Javascript Sound API talks to Flash

• Concerns– Requires Flash Player

SVAT – AAC Team

Future Applications

• Portable offline version of communicator– PDA

• Software on PDA connects to server– Download static version of communicator

• Images• Sounds• Pages

• Launches downloaded pages

SVAT – AAC Team

Future Applications

• Software development issues on PDA– Lack of training– Limitation of PDA resources

• Purchased a PDA– Begin development

SVAT – AAC Team

Future Applications

• Portable communicator in hospitals– Language differences– Act as a translator

• Ability to store multiple languages onto one device

SVAT – AAC Team

Future Applications

• Children with lower mobility at home– Multiple monitors throughout house

SVAT – AAC Team

Work To Be Completed

• Begin PDA software development

• Continue to brainstorm future applications

• Obtain feedback on new “add and modify content” page

SVAT – AAC Team

SVAT – AAC Team

QUESTIONS AND COMMENTS?

Thank your for your time!