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Team Guide - Dr. Daniel Phillips Project Sponsor - Dr. Michel Berg Team Members Alan StrandburgChris Abramo Ntongho AminGordon Yeung Nick ColumbareAlbert.

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Presentation on theme: "Team Guide - Dr. Daniel Phillips Project Sponsor - Dr. Michel Berg Team Members Alan StrandburgChris Abramo Ntongho AminGordon Yeung Nick ColumbareAlbert."— Presentation transcript:

1 Team Guide - Dr. Daniel Phillips Project Sponsor - Dr. Michel Berg Team Members Alan StrandburgChris Abramo Ntongho AminGordon Yeung Nick ColumbareAlbert Lam Automatic Home Medication Dispenser Project # P07009

2 Project Background Warfarin is an anticoagulant used for blood clotting medical conditions. Dosages of Warfarin need to be frequently adjusted to maintain effectiveness. For the first few months of the regimen, adjustments are made based on weekly or bi- weekly blood test results. This requires frequent coordination with the physician, patient and pharmacist.

3 Problem Statement Frequent coordination between the physician, patient, and pharmacist is –Time consuming –Inconvenient –Increases chance of dosage error Solution: A real-time adaptive system needs to be developed.

4 Fundamental Concept Using a computer, the doctor programs the daily dosages for the patient. This schedule is sent through the internet and connects to the automatic pill dispenser. At a designated time, the unit will sound an alarm, reminding the patient to take his/her medication. User pushes a button and the correct combination of pills are dispensed. Patient brings device to the pharmacist to be refilled.

5 Objective/Scope Create a prototype Warfarin dispensing device Unit used for demonstration of concept Must reliably dispense medication in accurate doses Communicates with physician via a computer interface Equipped with operating checks and alerts Easily refillable by the pharmacist Easy to use and simple user interface Spill-proof design Minimize future manufacturing cost

6 Final Pill Dispenser Design

7 Working Demo

8 Display Demo

9 Innovative Components

10 Friction Hinges / Vented Assembly Friction hinges –Supports weight of lid –Cover can be rotated and held open at various positions –Prevents the lid from violently dropping closed Outer housing –Easily removed for maintenance and cleaning –Four screws fasten the outer housing to the unit –The case mounted electronics are harnessed to facilitate removal –Venting the housing offers ample convective cooling for the electronics.

11 Slotted Tubes Tube Configuration –Consistent orientation –Minimized jamming / damage to the pills Slotted feature –Directs pill following mechanism Material requirements –Rigid –Corrosion resistant –Machinable –Manufactured in seamless tubing –9mm inner diameter Stainless steel tubes were determined to satisfy these requirements. –Original material – polycarbonate

12 Stainless Steel Plates Machined from stainless steel Material selection –Durability –Reduction of sliding friction

13 Micro-Servos Original design used larger servo-motors –Design deficiencies Separate mounting platform Clearance and alignment liabilities Required more operating space Final Design used micro servo-motors –More compact and efficient –Pushing motion –Eliminated the need for a separate mounting platform –Reduced the size, complexity, machining time, and cost of the unit

14 Power -Battery powered by 7.2V Lithium Ion. -Also accepts wall power. -Voltage is regulated to 5Vdc. -Battery recharged using a MAX745 smart Lithium Ion recharging chip. -The chip supplies a regulated charging current of 4A to the battery.

15 Speaker Amplifier

16 Functional Block Diagram

17 Motor Control

18 Pill Slide Consists of two angles: –Primary slide angle angle at which all the pills would slide at –Secondary slide angle allows pills from the outermost tubes to be moved towards the center of the unit and into the cup Angles were researched and tested to ensure that the pills would not become stuck after they are ejected from the pill plates

19 Pill Slide Angle Test

20 Pills Slide Demo

21 Pill Follower Assembly Meets the customer requirement of being spill proof Spring –provides sufficient force to keep pills from disorienting when unit is inverted Self contained one-piece unit

22 Pill Follower Demo

23 Pill Loading Device Loading Device –Relatively quick loading with short initial learning curve –Pills poured into the funnel and are stacked within the polycarbonate tube –Release pin stops pills at end of tube –Using slot as guide, mechanism is lowered over SS tubes –Pin is released and pills fall into tube –Maintains consistent and reliable pill orientation

24 Pill Loading Device Demo

25 Handle with Sensor Switch Modeled in vision of customer provided example Presence of handle is detected through micro-switch Secured through locking grab catch Stability in unit

26 General Operation

27 Accomplished Design Requirements ME Requirements: Enable one pill to be moved from a bulk compartment to delivery compartment at a time. Contain one month supply of Warfarin. Enclosed and latched with tamper evident indicator. Deliver correct dose without error. Rapid delivery of dose after dose button push. Quickly demonstrable. Loading of device done easily and quickly. Spill-proof. Large / easily visible buttons for dose retrieval and information. Reasonably quiet. Easy to use latching cup handle.

28 Accomplished Design Requirements EE Requirements: Backlit color screen with large characters for messages. Rapid delivery of dose after dose button push. Quickly demonstrable. Alert for service when pill supply is low. Delivery compartment with removable dose cup needs to be in place prior to dispensing. Audio/visual alarm to alert patient that it is time to take medication.

29 Accomplished Design Requirements CE Requirements: Remote dose programming through interactive software interface. Programmable messages from programmer to dispenser. Rapid delivery of dose after dose button push. Update dosing information by physician. Quickly demonstrable. Alert for service when pill supply low. Audio/visual alarm to alert patient that it is time to take medication.

30 Questions? (Positive Comments Only)


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