Prototype Ranking

The team discussed the pros and cons of each concept in order to decide how to move forward.

Pros and Cons

Concept 1: Recliner

Pros:

  • Thigh/calf support
  • Feet flat on the ground – no interference when standing up from chair
  • Relatively unobtrusive – contained underneath seat
  • Eliminates footrest problems

Cons:

  • No foot support
  • Unsure how to actuate

 

Concept 2: Linkage

Pros:

  • Thigh/calf support
  • Feet flat on the ground – no interference when standing up from chair
  • Relatively unobtrusive – contained underneath seat
  • Eliminates footrest problems

Cons:

  • No foot support
  • Kinematically complex – expensive
  • Sharp pressure point – under most stress

 

Concept 3: Pulley

Pros:

  • Simplest and cheapest
  • Provides foot support, not just calf support
  • Unobtrusive
  • Fits all wheelchair sizes

Cons:

  • No calf support
  • Footrest not flush with ground
  • Some of problems with current footrests remain