Upper Limb Assessment Device Using Depth Camera for Objective Motion Analysis
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Solution Overview
Problem
Current upper limb rehabilitation assessment methods are subjective, time-consuming, and require significant physician input, leading to inefficiencies and limited patient treatment capacity due to the difficulty in accurately judging and recording motion amplitudes and muscle strength.
Innovation Solution
An upper limb function assessment device and rehabilitation training system utilizing a depth camera, central processor, and exoskeleton robotic arm, which captures and analyzes user motion, provides objective data, and enables autonomous training by mirroring healthy arm movements to rehabilitate affected arms, reducing physician dependency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If one-to-one assessment by physicians is used, then assessment accuracy is improved, but assessment time increases and productivity decreases
Solution Approach 1:
The patent uses depth cameras to capture and digitally replicate patient motion data, creating an objective digital record that replaces subjective physician observation. This allows multiple patients to be assessed simultaneously without compromising measurement precision, directly resolving the contradiction between accuracy and productivity.
Solution Approach 2:
The patent replaces the mechanical system of manual observation and recording by physicians with an automated optical measurement system using depth cameras and computer processing. This substitution eliminates the time constraint of human assessment while maintaining or improving measurement accuracy through objective digital data collection.
2Ease of operation
If visual inspection by physicians is used, then flexibility in assessment is maintained, but measurement precision deteriorates due to subjective judgment
Solution Approach 1:
The depth camera creates an accurate digital copy of the patient's actual motion trajectory and amplitude, replacing the physician's visual estimation. This digital replica provides precise, objective measurement data while the system remains easy to operate through automated processing algorithms.
3Loss of information
If manual recording by physicians is used, then assessment completeness is achieved, but time consumption increases
Solution Approach 1:
The depth camera continuously captures motion data throughout the entire assessment period without interruption, eliminating the start-stop nature of manual recording. This continuous automated data collection ensures complete information capture while dramatically reducing the time required, as the system processes data in real-time without physician intervention.
Solution Approach 2:
The system creates a complete digital record of all motion parameters automatically, replacing the physician's manual documentation process. This digital copy captures all necessary assessment information simultaneously, eliminating the sequential nature of manual recording and significantly reducing time loss.
4Productivity
If automated depth camera assessment is used, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex manual assessment procedures with a standardized automated optical system. While the device itself has technical complexity, it eliminates the need for complex human judgment processes, training requirements, and subjective interpretation, thereby increasing productivity through consistent automated operation.
Data Source
AI summary
The present invention provides an upper limb function assessment device and the use method thereof and an upper limb rehabilitation training system and the use method thereof, wherein the upper limb function assessment device includes a display, a depth camera and a central processor, the depth camera is used to capture a user's motion, the display is used to display motion demonstration and the user's motion, and the central processor is connected to the display and the depth camera, respectively. The present invention captures the user's motion precisely with the depth camera, which makes the obtained data more accurate and objective, and also facilitates recording and storage of the obtained data. The central processor determines whether the completion of the motion meets the requirements in assessment scales, allowing the user to come up with an assessment report on his own without requiring a lot of assistance from a physician.