The Human Hand: Five Human Factors of Medical Design | Bryce Rutter

More than 95 percent of all the products we interface with daily involve the use of our hands in some way. We use this anatomic “tool” hanging from our shoulders to pull, twist, grip, pinch, move, steer, hold, squeeze, turn, lift, scratch, slide, tighten, bend, tap and open—among other motions. But how do we intuitively know which grip to use; how many fingers to use; how to sense the characteristics of the things we touch; and their temperature, mass, scale and form?

Our 10 fingers provide us with enormous capability.  In this workshop, Bryce Rutter, PhD, IDSA, illuminates five, key, human factors that impact medical design.


The Human Hand

5 Human Factors of Medical Product Design


Workshop Content

  1. Natural Design - Phylogeny
    • Intrinsic Geometries
  1. Variability – Ontogeny
    • Anthropometry
    • What Size is your Hand?...  everyone determines their hand percentile using handout
    • Dynamic Anthropometry
    • 3D Surfacing of Anatomy
  1. Opposition – The Tool Maker
    • The Mighty Thumb
    • Haptics
    • Sensing Accuracy
    •  Smart vs. Dumb Hands
    • Superfingers
    • Grip Architectures
    • Grip Lines
    • Dexterity & Precision
    • Motor Control
  1. Aging – From Conception to Aging in Place
    • Coordination, Control & Skill
    • How hand function emerges
    • How hand function diminishes with age
    • Common diseases
  1. Design Strategies – Getting it Right
    • The virtual origin for instrument control
    • Phase transitions between grips – from bi-lateral to tri-lateral to multi-lateral grip  architectures

Wrap Up - The Hand as Art