User-Centric Feedback for the Development and Review of a Unique Robotic Glove Prototype to Be Used in Therapy
Table 1
First design matrix table connecting the user’s needs to the critical functions of the product.
Category
Design criteria
Importance (ranking of 1–5)
Range of motion
Ease of control
Consistency of response
Independence
Long life
Ease of fitting
User protection
Low cost
How much?
Joint motion Category importance: 4
Shoulder
2.56
9
3
9
9
9
3
3
3
5 dof
Elbow
2.89
9
3
9
9
3
3
3
9
2 dof
Wrist
2.67
9
3
9
9
3
3
3
3
3 dof
Fingers
3.78
9
3
9
9
9
3
3
9
4 dof
Thumb opposability
3.11
9
3
9
9
9
3
3
9
3 dof
Function Category importance: 4.78
Grasping
4.63
3
9
9
9
9
3
3
9
Clinical evaluation
Lifting
3
9
9
9
9
9
3
9
3
Clinical evaluation
Releasing
3.63
3
9
9
9
9
3
1
9
Clinical evaluation
Tilting/rotation
2.25
9
9
9
9
3
3
3
3
Clinical evaluation
Reaching
1.5
9
9
9
9
3
3
1
3
Clinical evaluation
Interaction /control Category importance: 2.67
Ease of selection
4.22
9
9
9
9
9
9
3
3
Testing
Starting motion
2.56
3
9
9
9
3
1
3
9
Testing
Stopping motion
1.44
3
9
9
9
3
1
9
9
Testing
Effort
4.44
3
9
9
9
9
1
3
3
Clinical evaluation
Feedback
2.33
1
1
9
3
9
1
9
3
Haptic devices
Wearability Category importance: 2.22
Comfort
3.67
3
1
3
3
9
9
3
3
User feedback
Weight
4
3
3
1
9
9
9
9
3
<1 kg
Stability
2.33
9
1
3
3
9
9
9
3
Clinical evaluation
Tightness at joints (fit 1)
2.33
3
1
3
3
9
9
3
9
Clinical evaluation
Tightness at muscles (fit 2)
2.67
3
1
3
3
9
9
3
9
Clinical evaluation
Other Category importance: 1.33
Setup
2.89
3
3
1
9
9
9
9
9
Market analysis
Appearance
1.78
9
1
1
3
9
1
1
3
User feedback
Noise
1.56
1
1
1
3
9
1
1
3
User feedback
Freedom
4.44
9
9
9
9
9
9
9
3
Clinical evaluation
User safety
4.33
9
9
9
9
9
9
9
9
Clinical evaluation
The matrix depicts the strength of relationship between factors on a 3-point scale where 1 is a weak correlation and 9 is a strong correlation. The relationship strength was taken from the participant interviews after the questionnaire. dof stands for degrees of freedom.
