Browse Prior Art Database

A visualization method for training performance scores of upper-limb stroke rehab patient Disclosure Number: IPCOM000250349D
Publication Date: 2017-Jul-05
Document File: 8 page(s) / 640K

Publishing Venue

The Prior Art Database

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 41% of the total text.


A visualization method for training performance scores of upper-limb stroke rehab patient

Fig. 1 plot of performance score


A rehab product provides a solution for rehabilitation of up limb. During the exercises, the movements

of the user will be monitored and recorded for performance assessment, which is an indicator for the

recovery. The performance indicator of the exercises are the abnormal pattern (failure to follow the

designed movement) and Range Of Movement(“ROM”), which will be allocated with respective scores

to generate an overall performance score. However, the physician cannot intuitively get the insight from

the performance score of how the patient behaves respectively in the aspect of abnormal pattern or in

the aspect of ROM, especially difficult to further figure out a trend for these two aspects from the

performance score data over time.


Here proposes a visualizing method to plot a performance score determined by abnormal pattern score

and ROM score, the visual characteristics of the indicator of the performance score in the plot

associated with ratio between the abnormal pattern score value and ROM score value. In this way, the

performance score is visualized to the user with additional information of the ROM score and abnormal

pattern score. Adjustable weights may further be applied to the ROM score and abnormal pattern score

to outstand the aspect of user’s interest.

Fig. 1 illustrates an embodiment of visualization of the performance score over days of a patient, where

each point indicates a performance score of the rehab exercise the user took on one particular day. The

proportion of red in the color of a point associates with the ROM score value and the proportion of

green associates with the 50% abnormal pattern score(100% abnormal pattern score is not likely to


0 10 20 30 40 50 60








T o ta

l P e rf o rm

a n c e S

c o re

(R O M o

n ly )

50% Abnormal Pattern 0% Abnormal Pattern


Furthermore, a weight bar may be designed to be positioned the plot (not shown on Fig. 1) to

emphasize either the ROM score or the abnormal pattern score based on the user’s interest. Then the

performance score will be recalculated and be plotted.

Such mechanism can be also further applied to assess a rehabilitation plan comprising multiple exercises,

where each exercise corresponds to either ROM score or abnormal pattern score.

Background Stroke patient has motor problems on upper-lim. Rehab therapists assess motor capability for

stroke patients and make the exercise plan. Different exercises/exercise frequencies are defined

in the plan. Interactive rehab gaming devices or VR based rehab products containing the exercise

plan are used to help stroke rehab patient to finish the exercises.

Problems or disadvantages overcome

How to evaluate rehab patient performance after the stroke patient follows the plan containing

different exercises.

The main element(s)

This proposes a training performance sco...