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Active Ankle/Foot Orthotic - PowerPoint PPT Presentation


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Active Ankle/Foot Orthotic. Client : Dr. Robert Pryzbelski Advisor : Professor Brenda Ogle Team Members : Jessica Hause - Co-leader Erin Main - Co-leader Joshua White - Communicator Anthony Schuler - BWIG Emily Andrews - BSAC. Presentation Outline. Problem Statement Background

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Presentation Transcript
active ankle foot orthotic

Active Ankle/Foot Orthotic

Client:

Dr. Robert Pryzbelski

Advisor:

Professor Brenda Ogle

Team Members:

Jessica Hause - Co-leader

Erin Main - Co-leader

Joshua White - Communicator

Anthony Schuler - BWIG

Emily Andrews - BSAC

presentation outline
Presentation Outline
  • Problem Statement
  • Background
  • Summary of PDS
  • Current Orthotics
  • Design Alternatives
    • Spring
    • Joint
    • Material
  • Design Matrix
  • Future Work
  • References
problem statement
Problem Statement
  • Orthotic for patients with neuropathies affecting gait
  • Actively enhances forefoot propulsion
  • Increases proprioception and balance
  • Supports ankle weakness
background
Background
  • Neuropathy
    • Stroke
    • Charcot-Marie Tooth
    • Multiple Sclerosis
  • Plantar & Dorsiflexion
  • Foot Drop
  • Normal Gait
summary of pds
Stability and support

Aids propulsion

Weight-bearing

Under $300

Universal vs. custom-fit

Light, strong and durable

Thermoplastics, biopolymers, nano-fibers, neoprene

Summary of PDS
spring design
Spring Design
  • Thermoplastic
  • 90° angle
  • Leaf spring in sole aids propulsion
joint design
Joint Design
  • Thermoplastic
  • Two pieces connected by joint
  • Tamarack joint assists plantar and dorsiflexion
material design
Material Design
  • Memory material
  • High energy return
  • Material assists plantar flexion and dorsiflexion
future work
Future Work
  • Continue biomechanics research
  • Perform gait analysis
  • Finalize design
  • Build prototype
  • Perform prototype testing
references
References
  • http://www.footankle.com/ankle-foot.htm
  • http://www.firsttoserve.com/Catalog-Orthotics/Lower_Extremity/Custom_Ankle_Foot_Orthotic_AFO/
  • http://www.dafo.com/index.cfm?pageID=2143
  • http://leedergroup.com/
  • http://www.beckerorthopedic.com/tamarack/t5.jpg
  • http://www.ottobock.com/cps/rde/xbcr/SID-3F574DD1-5FE72259/ob_com_en/Bedienungsanleitung_28U11_WalkOn.pdf
  • http://www.bostonpedorthic.com/orthotics.asp
  • http://www.germes-online.com/direct/dbimage/50066106/Leaf_Spring.jpg
  • http://www.springhouston.com/
  • http://www.doereport.com/enlargeexhibit.php?ID=842
  • http://www.germes-online.com/direct/dbimage/50066106/Leaf_Spring.jpg
  • https://secure.roycemedical.com/images/products/AFOLeafSpring.jpg
  • http://www.mda.org/publications/fa-cmt.html
  • http://sprojects.mmi.mcgill.ca/gait/normal/walk.gif
spring design pros and cons
Pros

Cost efficient

Ankle stability

Durable

Cons

Over-coverage can cause excessive heat

Poor propulsion

Bulky

Restricted range of motion

Spring Design(Pros and Cons)
joint design pros and cons
Pros

Cost

Propulsion

Foot clearance

Cons

Bulky

Poor breath ability

Inflexible sole

Joint Design(Pros and Cons)
material design pros and cons
Pros

Lightweight

Flexible

Propulsion

Foot clearance

Durable

Cons

Poor stability and support

Cost

Availability of materials

Material Design(Pros and Cons)