man’s quest for immortality: simulation of an implantable cardioverter defibrillator
DESCRIPTION
Man’s Quest for Immortality: Simulation of an Implantable Cardioverter Defibrillator. ME 224 Final Project Andrik CardenasJohn Foglesong Monica KoepnickJon Moncton December 12, 2001. Presentation Agenda. Objectives Background Program Logic Results/Example Conclusion Questions. - PowerPoint PPT PresentationTRANSCRIPT
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Man’s Quest for Immortality:
Simulation of an Implantable Cardioverter Defibrillator
ME 224 Final Project
Andrik Cardenas John FoglesongMonica Koepnick Jon Moncton
December 12, 2001
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Presentation Agenda
ObjectivesBackgroundProgram LogicResults/
ExampleConclusionQuestions
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Objectives
ME Curriculum Objective: Understand and apply in-class teachings to
world around us to create solutions to everyday problems.
Final Project Objective: Create a simplified, yet realistic, ICD simulator
using LabVIEW to compare a heart rate in question with the appropriate range as determined from user-defined variables.
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What is an ICD?
Purpose: Prevent ventricular
fibrillation by monitoring heart rate and delivering precisely calibrated shocks to control abnormal heart rates
Physical Structure Size Materials
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What is an ICD?
88 mm
63 mm
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How does an ICD work?
Pacingbrief bursts of impulses to heart muscle at
faster than normal pace
Low-Energy Cardioversionmild shocks of 0.5-2.0 Joules to break
abnormal rhythm
Defibrillationintense shocks of 30 Joules to stop
ventricular fibrillation
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Simulation of an ICD
Key Considerations: Controllable patient characteristics
AgeActivity Level
Definition of healthy heart ratesActivity Level
Maximum Heartbeat (beats/min)
Minimum Heartbeat (beats/min)
High 220 – Age 100
Medium 60% of Max 80
Low 85 60
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Program Logic
Key Components User Inputs Signal Manipulation and Comparison Program Outputs to User
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Program Logic—User Inputs
Key Components Age Activity Level Initial Heart Rate
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Program Logic—Signal Manipulation and Comparison
Read current frequencyCompute upper and lower
boundariesCompare current frequencyDetermine if “shock” is necessary
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Program Logic—Program Output to User
Shock, if necessaryShow current heart rateDetermine LED outputGraph progress of heart rate
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Results
It works!Simulation Example
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Lab Feasibility
Main ObjectiveLengthProgram ComplexityDifficulty of Lab Handout
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The Future of ICDs
MiniaturizationTransition from
conventional electronics
Artificial heart replacement
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Conclusion
Conceptual OverviewUtilized LabVIEW CapabilitiesReplacement of Conventional
Electronics
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Questions?
JohnnyMonica
Jon
Andrik