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Transcript of P16081: SYSTEMIC CIRCULATION MODEL Jacob Zaremski – Lead Engineer Mallory Lennon – Project...
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P16081: SYSTEMIC CIRCULATION MODEL
Jacob Zaremski – Lead Engineer
Mallory Lennon – Project Manager
John Ray – Communications Manager
Fabian Perez – Purchasing Coordinator
Robert Kelley – Document Control/EDGE Coordinator
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Our goals for this review
Updates from Phase I Review (Background)• Engineering Requirements
• Customer Requirements
• Market Analysis
Functional Decomposition
Concept Development
System Architecture
Engineering Analysis
Risk Assessment
Project Plans
Agenda
10 minutes
5 minutes
10 minutes
5 minutes
15 minutes
5 minutes
2 minutes
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Goals
1. Receive feedback
2. Identify obstacles between current state and desired
end goal
3. Clarify feedback
4. Create action plan for each
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Project Statement
• Develop a physical model of systemic
circulation
• Provide a teaching tool that will validate
theoretical models from Chapter 5 of Feher
• Measure relevant outputs: pressure and flow
• Interface with P16080 project
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Use Scenario
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Marketing Potential• Quantitative Human
Physiology: An Introduction by Joseph J. Feher
($119.95 @ RIT B&N)
• Add lab fee $15/student/semester
• Average 70 students/semester
• Covers ability to build new system each semester (if desired)
• Add model as addition to purchasing textbook
• Add lab experiment and computer program as additional costs
1
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Customer Requirements (1 of 2)
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Customer Requirements (2 of 2)
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Engineering Requirements (1 of 2)
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Engineering Requirements (2 of 2)
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System Architecture
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Flow Diagram
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Functional Decomposition
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Morph Chart (1 of 2)
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Morph Chart (2 of 2)
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Concept Selection Criteria
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Design Concepts
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Pugh Chart (1 of 3)
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Pugh Chart (2 of 3)
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Pugh Chart (3 of 3)
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Preliminary Engineering Analysis
• Lumped Parameter Model
• Governing Equations
• Critical Parameters and Ranges
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Lumped Parameter Model
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Lumped Parameter Model
QcQR
Resistance, RC
Resistance, RA
Resistance, RV
Pressure, PA
Pressure, PC Pressure, PV
Cardiac OutputVenous Return
v
P16081 Pump
Arterial Compliance,
CA
VenousCompliance,
CV
CapillaryCompliance,
CC
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Subsystem Model
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Measured
Defined
2
Governing Equations: Flow
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Governing Equations: Resistance• Poiseuille’s Law
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Governing Equations: Compliance
Tygon Tubing- has been shown to have physiologically relevant compliance- higher wall hardness for arterial, softer for venous
7
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Fluid Capacitors
Spring piston Air chamber acts as spring
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Spring piston
(Woodruff et al, 1997)
For A = 10 in2:
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PCylindrical Tank
Compliance Range: 1-200 mL/mmHg
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Rectangular Prism TanksPP
CArterial
CVenousCompliance Range: 1-200 mL/mmHg
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Concept Risks
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Technical Risks
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Resource Risks
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Safety Risks
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Environmental Risks
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Theoretical Risk Assessment
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Project Plans Phase 2
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Project Plan Phase 3
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Next Steps
• Engineering Analysis
• Budget Feasibility
• Iterate Pugh Chart
• Collaboration with P16080
• PASCO sensors
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Concerns1. Lacking sufficient background knowledge to
make supported decisions about system
components
2. Accurately modeling textbook models and
what precision we will be able to achieve
3. Creating the software interface to run system
and/or record desired outputs
4. Possible sources of error that are neglected in
calculations
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Acknowledgements
RIT Faculty• Dr. Jennifer Bailey• Dr. Steven Day
U of R Faculty• Dr. Schwartz• Dr. Doran Mix
Guide• Gerald Garavuso
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Sources1. http://www.amazon.com/Quantitative-Human-Physiology-Introduction-Engineering/dp/0123821630
2. Feher, Joseph J. Quantitative Human Physiology: An Introduction. Amsterdam: Elsevier/Academic,
2012. Print.
3. F. M. Donovan. Design of a Hydraulic Analog of the Circulatory System for Evaluating Artificial
Hearts, Biomaterials, Medical Devices, and Artificial Organs, 1975, 3:4, 439-449.
4. https://www.google.com/search?
q=needle+valve&espv=2&biw=1149&bih=659&source=lnms&tbm=isch&sa=X&ved=0CAYQ_AUoAW
oVChMIjIOY0-ieyAIVCqYeCh2pJwgr#imgrc=WwAmF7IltMl6-M%3A
5. http://www.terrybookers.co.uk/35mm-gate-valve-2226-p.asp
6. http://www.hassmfg.com/search.pl/1213638750-2927?keyword=1165
7. Varble N, et al. In vitro hemodynamic model of the arm arteriovenous circulation to study
hemodynamics of native arteriovenous fistula and the distal revascularization and interval ligation
procedure, Journal of Vascular Surgery, 2013, 59:5, 1410-1417.
8. Linearization and nonlinear fluid elements - Dartmouth College
http://www.dartmouth.edu/~sullivan/22files/linearization_and_fluid.pdf
9. Woodruff, Stewart J., Keith M. Sharp, and George M. Pantalos. "Compact Compliance Chamber
Design for the Study of Cardiac Performance in Microgravity." ASAIO Journal (1997): 316-20. Web.
30 Sept. 2015.
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ADDITIONAL SLIDES
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Customer Requirements Mapping (1 of 2)
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Customer Requirements Mapping (2 of 2)