Doser x100 Accessible Syringe Dosing Device Team #1 Bob Mock Gabe Goldman Megan Bowers Karen Young...
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Doser x100Doser x100
Accessible Syringe Dosing Device
Team #1Team #1Bob MockGabe GoldmanMegan BowersKaren Young
University of ConnecticutBiomedical EngineeringApril 29, 2005
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Statement of NeedStatement of Need
Intravenous medication necessary for Intravenous medication necessary for many diseases and disordersmany diseases and disorders
Self-dosing problematic for those with Self-dosing problematic for those with impaired vision, hearing, motor skillsimpaired vision, hearing, motor skills
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ObjectiveObjective
This instrument is a syringe-dosing This instrument is a syringe-dosing apparatus used to measure and mix apparatus used to measure and mix insulin or heparin before injection.insulin or heparin before injection.
Accurate to the nearest 0.01cc.Accurate to the nearest 0.01cc.
Microprocessor-controlled digital display.Microprocessor-controlled digital display.
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Doser x100 ClientsDoser x100 Clients
Insulin/Heparin dependentInsulin/Heparin dependent
Type 2 diabetes, strokes/heart attacks, Type 2 diabetes, strokes/heart attacks, Parkinson’s disease, tremorsParkinson’s disease, tremors
Blind and hearing impairedBlind and hearing impaired
Minimal physical exertionMinimal physical exertion
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Market ResearchMarket Research
Several products currently on the market:Several products currently on the market:– Count-A-Dose by Medicol: $59.95Count-A-Dose by Medicol: $59.95– Load-Matic by Palco Labs: $49.95Load-Matic by Palco Labs: $49.95– The Syringe Support by the Foundation The Syringe Support by the Foundation
Center Louise-Herbert: $19.95Center Louise-Herbert: $19.95
All three devices are difficult for use by All three devices are difficult for use by those with poor motor skills.those with poor motor skills.None of the devices have a digital display.None of the devices have a digital display.
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Preliminary DesignsPreliminary Designs
Our team fully documented three designs Our team fully documented three designs before choosing an optimal designbefore choosing an optimal design
Design I: Motor and gears, logic circuitDesign I: Motor and gears, logic circuit
Design II: Ball-screw and stage, motorDesign II: Ball-screw and stage, motor
Design III: Ball-screw, microprocessorDesign III: Ball-screw, microprocessor
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Doser x100Doser x100
Design aspectsDesign aspects– Case DesignCase Design– User InterfaceUser Interface– ElectronicsElectronics
ConclusionConclusion
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User Interface
MicroprocessorPowerSupply
Driver
LCDDisplay
Syringe Dosing Project Block Diagram
Linear Actuator
Syringe
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User InterfaceUser Interface
LCD displayLCD display
Braille KeypadBraille Keypad
Help optionHelp option
Text-to-speechText-to-speech
Pictures not to scale
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Case DesignCase Design
PlexiglasPlexiglas
Mounting of all components:Mounting of all components:– power supply, linear actuator, driver, PCB power supply, linear actuator, driver, PCB
board, syringe, and bottles. board, syringe, and bottles.
12x8.5 inches12x8.5 inches
Saw, mill, drill pressSaw, mill, drill press
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ElectronicsElectronics
Captive Linear ActuatorCaptive Linear Actuator– Motor rotates to pulls screwMotor rotates to pulls screw– Actuator piston does not spinActuator piston does not spin– High force, long length, small High force, long length, small
resolution per step (.000125”)resolution per step (.000125”)
DriverDriver– 24 volts24 volts– Simplifies design – 2 inputsSimplifies design – 2 inputs– Direction input - high pulls back Direction input - high pulls back
actuator and low pushes it forwardactuator and low pushes it forward– Clock pulse input – runs actuator in Clock pulse input – runs actuator in
addition to controlling speed by addition to controlling speed by frequency of pulsefrequency of pulse
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ElectronicsElectronics
PCB boardPCB board– The schematic The schematic
diagram of the entire diagram of the entire project is designed project is designed first.first.
– The PCB is designed The PCB is designed with connections to with connections to incoming devices incoming devices optimized for easy optimized for easy setup.setup.
– The schematic links to The schematic links to PCB to check for PCB to check for errors.errors.
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MicroprocessorMicroprocessor
PIC16F874A – 40 pin dipPIC16F874A – 40 pin dipAccepts data from the user interface.Accepts data from the user interface.Outputs data from user to LCD display.Outputs data from user to LCD display.Programmed in C++ and converted into Programmed in C++ and converted into assembly code assembly code Accepts inputs from keypad using strobe Accepts inputs from keypad using strobe inputs 4x4 matrix – Pulses are strobed inputs 4x4 matrix – Pulses are strobed through pins 1-4 of the keypad and then through pins 1-4 of the keypad and then read from pins 5-8read from pins 5-8
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BudgetBudget
DateDate CompanyCompany Cost ($)Cost ($)
1/7/051/7/05 JamecoJameco 40.4240.42
1/12/051/12/05 Maxi AidsMaxi Aids 56.2056.20
1/17/051/17/05 Digi-KeyDigi-Key 63.3863.38
1/21/051/21/05 JamecoJameco 8.478.47
1/25/051/25/05 Mansfield SupplyMansfield Supply 21.5121.51
1/24/051/24/05 Haydon SwitchHaydon Switch 371.90371.90
2/01/052/01/05 Mansfield SupplyMansfield Supply 21.5121.51
2/22/052/22/05 US DigitalUS Digital 51.7951.79
2/18/052/18/05 Mansfield SupplyMansfield Supply 4.354.35
3/7/053/7/05 JamecoJameco 66.9166.91
3/25/053/25/05 Digi-KeyDigi-Key 40.0340.03
3/25/053/25/05 JamecoJameco 25.4225.42
3/25/053/25/05 Hooleon CorpHooleon Corp 43.9043.90
3/25/053/25/05 Images SIImages SI 39.4539.45
3/25/053/25/05 Mansfield SupplyMansfield Supply 13.7913.79
4/1/054/1/05 Tsop-adapter.comTsop-adapter.com 39.4039.40
4/1/054/1/05 AcronameAcroname 152.95152.95
4/8/054/8/05 Stop & ShopStop & Shop 55.9855.98
4/15/054/15/05 JamecoJameco 43.8943.89
4/15/054/15/05 PCB PCB 53.4553.45
TOTALTOTAL 1214.601214.60
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ConclusionConclusion
Product is unique due to:Product is unique due to:– Accessibility to those with poor motor functionAccessibility to those with poor motor function– Digital user interfaceDigital user interface– Electrical and mechanical interfacesElectrical and mechanical interfaces
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Acknowledgements Acknowledgements
Dr. EnderleDr. EnderleChris LieblerChris LieblerSerge and RichSerge and RichTracy MakuchTracy MakuchHaydon Switch and Instruments (HSI)Haydon Switch and Instruments (HSI)The 2004-2005 National Student Design The 2004-2005 National Student Design Contest, funded by the Rehabilitation Contest, funded by the Rehabilitation Engineering Research Center on Engineering Research Center on Accessible Medical InstrumentationAccessible Medical Instrumentation
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Questions?