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Monkey Restraint Device. Department of Biomedical Engineering UW-Madison. Monkey Restraint Group. Group: Kelly Toy Kawai Chan Brian Frederick Miguel Benson Ross Gerber Aman Ghotra Client: B’Ann Gablet, MS Advisor: Willis Tompkins, PhD. Problem Statement.

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monkey restraint device

Monkey Restraint Device

Department of Biomedical Engineering


monkey restraint group
Monkey Restraint Group

Group: Kelly Toy Kawai Chan

Brian Frederick Miguel Benson

Ross Gerber

Aman Ghotra

Client: B’Ann Gablet, MS

Advisor: Willis Tompkins, PhD

problem statement
Problem Statement
  • To modify an existing monkey restraint device in order to effectively restrain a monkey’s head for topical eye-drop administration.
background information
Background Information
  • 50 years of non-human primate studies
  • Rhesus are 95% genetically similar to humans
  • B’Ann Gabelt performs glaucoma research on rhesus monkey
  • Current restraint was made by Midwest Regional Primate Research Center
background material restraint procedure
Background MaterialRestraint Procedure
  • Monkeys transported via transport cages (A)
  • Monkeys are pushed into treatment cage (B)
  • Restraint swings to vertical position



background material restraint process
Background MaterialRestraint Process

Open treatment cage

Closed treatment cage

product design specifications client needs
Product Design SpecificationsClient Needs
  • Restrain head of monkey
  • Compatible with existing restraint
  • Work with various sized monkeys
  • Not harm the monkey
product design specifications group specs
Product Design SpecificationsGroup Specs
  • Extremely durable
  • Operable by one person
  • Easily sanitized
  • Fits under protocol
design 1
Design #1
  • Durable plastic, set across bars of cage
  • Chin restraint
  • Able to slide up to chin
  • Locked in place by a fastener
  • Monkey able to cover eyes, grab
design 2
Design #2
  • Wide winged plastic sheet
  • Hole for monkey’s head
  • Keeps monkey’s hands below sheet
  • Locks onto bars of cage
  • Allows chin ducking
design 3
Design #3
  • Wide winged plastic sheet
  • Chin restraint that slides to monkey
  • Prevents monkey from using arms
  • Compatibility with all sized monkeys?
group 2 s designs ross gerber and aman ghotra
Group 2’s DesignsRoss Gerber and Aman Ghotra
  • U-Cup with Pin
  • Chin Strap
  • Headband Strap Restraint
u cup pin
U-Cup Pin
  • Different pin settings
  • Comfortable chin post
  • Attach at back of cage and swivels
chin strap
Chin Strap
  • Like football chin strap
  • Flexible durable material
  • Secures to back of cage
headband restraint
Headband Restraint
  • Fits around head and down around the chin
  • Straps on top act like zip ties
  • Monkey’s own movements tighten device
group 3 s designs kawai and miguel s designs
Group 3’s DesignsKawai and Miguel’s Designs
  • 1. Flatboard Design
  • 2. Stick and Clamp Design
  • 3. Velcro Design
flatboard design
Flatboard Design

View from the top

stick and clamp design
Stick and Clamp Design
  • Component:

1. Stick

2. Clamps

3. Headrest

velcro design
Velcro Design
  • Components:

1. Headrest

2. Two Velcro Stripes

final decision
Final Decision
  • Velcro Design
  • Easy to make, components can be purchased separately