BME Design 200/300 Glaucoma Medication Reminder

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Team Info  Members  Chris Webster  Mike Oldenburg  Ksenija Bujanovic  Jessica Hause  Advisor  Dr. John Webster  Professor, Biomedical Engineering Dept  Clients  Leo Wang  Ophthalmologist  Paul Kauffman  Chairman of Ophthalmology Department

Overview  Problem Statement  Motivation  Background/Symptoms  Specifications  Current Technology  Three Design Ideas  Design Matrix  Final Design  Future Work

Problem Statement  Develop a portable device to alert glaucoma patients to take their next medicine.  Patients are severely sight-impaired so an audio signal will be necessary.  The device needs to be programmable for six different medications.  Reset mechanism, types of reminder signals, durability/portability, and power options must be taken into consideration.

Motivation  To make it as easy as possible for patients to remember to take medications  To help prevent potential blindness caused by noncompliance to the medications

Glaucoma Background  Causes blindness  Ocular pressure build up  Crushes the optic nerve  If untreated, blindness may result in a few years

Symptoms  Usually no pain or symptoms from pressure  Peripheral vision is first to deteriorate  Can go unnoticed until late stages  Cannot be prevented or cured, but can be controlled

Specifications  Remind patients when each medication should be taken  Alarm with volume control  Clock with current time for scheduling  Able to remind for up to six different medications  Digital screen with big, bold, black characters  Programmable by physician with a locking mechanism  Durable  Estimated Size - 5½’’ x 2¾’’ x ¼ - ½’’  Battery operated

Current Technology  Many on the market  Wide range of costs, as low as $20  Portable, adjustable, found in local drug store  Insensitive to the sight impaired or elderly  Some only support one timer

Design Idea 1: LCD System  Use an LCD touch screen  Windows/USB compatible  Relatively easy to program  Easy to lock

LCD System (Advantages and Disadvantages) Advantages  Prevents patient tampering  Visual and audio alert  Easy to program  One-time programming Disadvantages  Expensive  Requires manufacturing  Risk of malfunction

LCD System (Materials and Costs) MaterialsCost LCD Kit (includes screen, controller, and USB interface) $199 Power Supply $25 Plastic casing $10 Programming Software $ Total$

Design Idea 2: Modified PDA   Use a standard PDA   Write a computer program that meets the client’s needs

Modified PDA (Advantages and Disadvantages) Advantages  Only have to write one program  Easy mass distribution  Lockable to prevent patient tampering  Visual and Audio alert  More cost effective than LCD  Smallest Disadvantages  Difficulty of programming  PDA cost  Depending on model  Battery life  Average ~4 hours

Modified PDA (Materials and Costs) MaterialsCost PDA$ Programming Software $ Total$

Design Idea 3: Modified Egg Timer  Six separate timers, each programmable  Large text and buttons for the sight impaired

Modified Egg Timer (Advantages and Disadvantages) Advantages  Prevents patient tampering  Visual and audio alert  Cost-effective Disadvantages  Less capabilities  Requires outside casing  Requires Manufacturing  Higher risk of malfunction

Modified Egg Timer (Materials and Costs) MaterialsCost Grey LED screens with bold black numbers and letters $10-20 Colored LED lights $5-10 Plastic casing $10 Timers and programming circuit $50 Speakers$10 Control knobs $2 Total$87-102

Design Matrix Design Modified Egg Timer Modified PDA LCD System Ease of Unit Interface 355 Size454 Cost1086 Ease of Implementation 344 Ease of Use 8610 Durability444 Production Time 532 Meet Client Requirements 1088 Total474343

Final Design: Modified Egg Timer  Cost effective.  Easy to use  Fits all the clients needs.

Future Work  Finalize design specs with client  Order parts  Build final product