Mirror Display Feedback Device for Rehabilitation
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Solution Overview
Problem
Existing home rehabilitation systems for stroke victims are difficult to use and lack intuitive feedback, as they often rely on rendered figures that patients struggle to identify with, and are not user-friendly for elderly individuals who may not be familiar with computer screens.
Innovation Solution
A feedback device combining a mirror display with computer-generated animations that overlays the patient's own movements, allowing direct comparison and real-time feedback on posture and movement deviations, using position-sensing means such as inertial sensors or camera systems to provide intuitive and easy-to-use guidance for rehabilitation exercises.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a rendered figure is used to display template posture and movement, then feedback can be provided to the patient, but the patient finds it difficult to identify with the rendered figure and the system becomes less intuitive
Solution Approach 1:
The patent uses a mirror to create a real-time optical copy of the patient's actual body, allowing direct visual comparison with the template animation. This replaces the abstract rendered figure with a familiar self-image that the patient can immediately identify with, making the feedback intuitive and effective simultaneously
Solution Approach 2:
The mirror acts as an intermediary between the patient's real body and the computer-generated template animation. By superimposing the template over the mirror image, the system creates a bridge that allows the patient to compare their movement with the ideal movement in a visually intuitive way, resolving the contradiction between providing feedback and maintaining intuitivity
2Loss of information
If a Computer screen is used for displaying feedback, then feedback can be provided, but stroke victims who are elderly and not acquainted with Computers find the system difficult to use
Solution Approach 1:
Instead of displaying feedback on a computer screen that requires interpretation, the system creates a real-time optical copy of the patient's body in a mirror and superimposes the template animation directly on it. This visual feedback is universally understandable regardless of computer literacy, making the system easy to use for elderly stroke victims while still delivering comprehensive feedback
Solution Approach 2:
The patent replaces the computer screen interface (which requires cognitive processing and familiarity) with a mirror-based visual interface that provides immediate, intuitive feedback through optical reflection and superposition. This substitution eliminates the barrier of computer literacy while maintaining effective feedback delivery
3Productivity
If unsupervised home rehabilitation is enabled, then exercise frequency increases and recovery accelerates, but the patient needs intuitive and easy-to-use feedback to maintain proper form without therapist guidance
Solution Approach 1:
The mirror creates a real-time copy of the patient's body that can be directly compared with the template animation, providing intuitive visual feedback that does not require therapist interpretation. This allows patients to independently assess their form and make corrections, enabling frequent unsupervised exercise while maintaining proper technique
Solution Approach 2:
The system provides immediate visual feedback by superimposing the template animation over the mirror image, allowing patients to see discrepancies between their movement and the ideal movement in real-time. This continuous feedback loop enables self-correction and maintains proper form during unsupervised exercise, supporting increased exercise frequency
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device enhances the effectiveness of rehabilitation by allowing patients to easily identify and correct their movements, increasing exercise frequency and intensity, leading to better and faster recovery, particularly suited for unsupervised home use.
Implementation Method 1
a mirror display device comprising a conventional display device having a reflective surface
Data Source
Figure 1
Figure 2
AI summary
The present invention is related to a feedback device (10) for guiding and supervising physical exercises, particularly home rehabilitation exercises of a person (12), comprising a computer device havinga CPU and a memory, a mirror display device (11) comprising a conventional display device having a reflective surface, and position-sensing means (13, 14) for a person disposed before the device. Furthermore, the invention is related to a feedback method for guiding and supervising physical exercises, particularly home rehabilitation exercises.