Transcript Active Ankle/Foot Orthotic - University of Wisconsin–Madison

Tissue Congestion
Relief
Client:
Dr. Doug Reinemann
Advisor:
Professor John Webster
Team Members:
Chelsea Wanta - Co-leader
Tony Schuler - Co-leader
Emily Andrews - Communicator
Tyler Vovos - BWIG
Steve Welch - BSAC
Presentation Outline
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Problem Statement
Background
Summary of PDS
Current Milking Machines
Design Alternatives
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Udder Vacuum
Reduced Liner Vacuum
Support Arm
Design Matrix
Future Work
References
Problem Statement
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

Strong vacuum force
Fluid collection in teat
Congestion and edema
 Painful
 Reduces milking speed
 Bacterial infection
 Hyperkeratinization
 Lost production time
Background
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Periodic compression
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Massage induces
circulation
Minimizes effects of
vacuum force
Recovery
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Positive pressure
Optimizes time in
milking parlor
Milking C ycle
1
Vacuum
0
0
1
2
Time (seconds)
3
Background
Summary of PDS
•
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•
•
•
•
•
Reduces congestion
High milking rate
Intuitive & convenient
Addition to existing machine
Sterile
Weight ≤ 2.3 kg
Constant pressure of 32-40 kPa
Current Milking Machines

Components
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Claw
Teat cups
Milk and vacuum
hoses
Connection hoses
Milk and vacuum
pipes
Pulsator
Current Milking Machines
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Constant vacuum for
milk extraction
Alternating
atmospheric and
vacuum pressure
Milking and massage
phases
Inadequate tissue
congestion relief
Udder Vacuum
Suction cup and
vacuum
 Alternating positive
pressure massage
+ Maximum congestion
relief
- Mechanically
complicated

Reduced Liner Vacuum
•
Reduced vacuum
pressure
• Alternating positive
pressure massage
+ Easy to fabricate and
implement
- Vacuum may hinder
congestion relief
Support Arm
•
•
Relieves claw weight
Positive pressure
massage
+ Requires no additional
vacuum
- Difficult to maintain and
implement
- Only applicable to
herring-bone parlors
Design Matrix
Congestion
Relief
(50)
Attachment
Support
(15)
Ease of Use
(15)
Durability
(10)
Cost
(10)
TOTAL
(100)
Udder
Vacuum
40
15
10
5
5
75
Reduced
Liner
Vacuum
35
10
15
10
10
80
Support
Arm
40
5
5
5
5
60
Future Work
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Continue congestion research
Finalize design
Build prototype
Implement prototype in milking lab
Test prototype
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Ultrasound
Pressure sensor
References
Mein, Graeme A., and Douglas J. Reinemann. "ACTION OF THE
CLUSTER DURING MILKING."
Questions…