1. Midpoint Project Review P10454 VAD Test Loop
Alex Moulton
Mechanical Engineer BS/ME

2. Project Information Project Name: -----------VAD Test Loop
Project Number: P10454
Project Family: P09454, P09021
Start Term: Fall 20091
End Term: Winter 20092
Track: Assistive Devices and
Bioengineering
Faculty Guide: Dr. Steven Day
Technical Advisor: ----Ed Hanzlik
Primary Customer: ----Dresser-Rand
Secondary Customer: Dr. Day, SD teams

3. Planning Mission Statement
Overview:
Left Ventricular Assistant Device (LVAD) is designed for people in the future to have mobility while waiting for a heart transplant.
The test loop is a model of the human body so we can identify and model the pump characterization curves and to test the damage caused by the LVAD to the blood.
Family Goals:
Create a more effective/efficient blood circulation loop
My Goals:
Fit & Finish, decrease it’s size and take care of the flaws/problems the previous teams have been suffering.
Future Goals:
LVAD eventually be placed in the human body
Primary Market:
Patients on the heart transplant waiting list, healthy enough for day to day living
Stakeholders:
Staff and Teachers affiliated with this project, students in present and upcoming senior design teams, and future patients.

4. Concept Development Customer/Interview/Minutes
Interviewed Check List
Dr. Day (FG), Ed Hanzlik (TA), Christine Lowry (SD Design Engineer), Jon Klien (SD Project Lead)
Compressed Minutes
Heating/Cooling, Connection/Leaks, Blood Damage/Coagulation, Sensor Accuracy, Overall Size

5. Merging of Projects 09021 and 09454 have very similar needs.
454 is researching impellers and diffusers
021’s pump is heating the blood excessively and causing blood damage
If 454 can create an impeller that is more efficient and generates less heat 021 will not have nearly the same blood damage that they expect to have with the current impeller.

6. Concept Development Customers Needs
Reason for investment:
The current available LVAD is to large and is not portable.
Test Loop System will help with the design of the LVAD
Produce an LVAD that is small enough to be implanted in the abdomen or be able to attach to ones belt.
Direct correlation to the patients quality of life.
A new technology that has to be explored.

7. Assumptions and Constraints
Blood is Newtonian
No blood damage
Drain and fill times must be fast (minutes)
Cost must be within budget
Continuous use
Pressure must be low enough for quick connect usage
Temperature must be held constant +/-
Data processing must be completed in seconds
Flow rate must be around 5 liters/min

8. Affinity Diagram Maintainability Complexity Compatibility Time
Resources
LVAD’s continuous use
Only a few people know how to use programs
Interfaces not hooking up
Insufficient Time for completion
Conflicting Priorities
Cleaning clogs out
How to model circulatory system
Parts not connecting properly
Unrealistic Schedules
Changing requirements/needs
Keep sensors working
Biocompatible
Computer programs not working
Parts not coming in
Bottlenecking
Leak Prevention
LVAD not much info about
People not working well together
Overworked
Not knowing answers or needs

9. Voice of the Engineer

10. Objective Tree

11. Function of the Project (Test Loop)

12. House of Quality VOC to VOE Data Processing Portability Protect Blood
Pump Blood
Size 1
Ease of use 9
Dependability 3
Comfort

13. Future Plans Quarter Plans Produce an LVAD Test Loop that would
Be smaller, more
efficient, more
effective, and have
greater sensor
capabilities in each
model made.
I would like to visit
the current 021 team
in their review
sessions and get
more feed back from
their design problems.
For the final presentation have
a conclusion on what needs to
be fixed for next year

14. Latest Meeting Info
No Leaks and quick connects have about 3 drops when they are disconnected
Draining system works great. Complete drainage in 20 seconds
Heater is assembled but not active
Pump works great for circulation of the water tank
Water tank is used for the heating and cooling of the blood (indirect and slow)
Epoxy or grease is needed to seal the o-ring for the glycerin (blood substitute) lid

15. Sources
Edge website 09021
Edge website 09454

16. Questions?