Problem Statement - University of Wisconsin–Madison
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Transcript Problem Statement - University of Wisconsin–Madison
Client: Dr. Jonathan Jaffery
Advisor- Brenda Ogle
Aaron Freis, Matthew Kudek, Jenna Spaeth, Timothy Balgemann
Problem Statement
Femoral Vein Catheterization and Position of
Patient
Client Expectations
Available Positioners and Current Practices
Choosing a Design
Progress Now and for the Future.
Design a leg positioner for use in femoral vein
catheterization that is optimized for the
following functions:
Securing a patient’s leg at a set angle
If necessary securing the pannus
Catheter inserted distal to
inguinal ligament
Often used for fluid
infusion or cardiac
diagnostics
Gives access to large blood
flow for hemodialysis
d.yimg.com/.../ls/he/healthwise/n5551133.jpg
Ideal leg position
Knee flexed
Hip abducted and externally
rotated
Allows for easier catheter
insertion
Difficult to keep in position
without holding leg
Disposable
Does not obstruct operating field
Inhibit leg from moving during entire
procedure
Provide an attachable device to retract the
pannus
Device does not slip or rotate during procedure
Manual method – “Nurse Restraint”
Patents:
3,931,654
4,730,609
5,010,900
7,234,180
None of the patents are similar to our design,
or have the same functionality.
Cuff attached to
opposite leg
Insert foot to produce
proper angle
Angle and length
adjustable
Supports opposite leg
Extends leg of interest
Foam material
Different sizes
3-piece system
Weight Plate
Rod/Cuff
Pannus Plate
Securing
mechanisms
Adjustable length
and rotation angle
Rod and
Counterweight
Foam
Wedge
Foot
Holder
Client interest (50)
50
20
5
Cost (10)
4
10
3
Meets component
expectations (10)
10
5
5
Versatility (20)
18
8
4
Total
82
43
17
Finalized our design
Ordered parts this past
Monday
Still need to decide on
some things yet..
Begun discussing rough
ideas on attachment
devices
Hinges, ball and socket
Go to Home Depot/Menards to look for attachment
mechanisms
Locking swivel mechanism
Construct prototype based on already ordered
materials
Test completed prototype on simulated catheter
procedure