Rollator Cueing System for Parkinson's Gait Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current mobility assistance devices for individuals with Parkinson's disease, such as wheeled walkers, lack remote initiation of visual and audio cues and fail to adapt to changing gait patterns, posing safety risks and limiting independence.
Innovation Solution
The enhanced cueing system integrates a microcontroller, NFC/PAN communication, and sensors to provide automatic, continuous visual and audio cues, including a series of colored laser lines and musical tones, and allows remote configuration and brake engagement to prevent falls during festinating or accelerating gait.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual button pressing is required to activate visual and audio cues, then the system is simpler to implement, but it reduces ease of operation and independence for Parkinson's patients experiencing FOG episodes
Solution Approach 1:
The system automatically detects FOG episodes through sensors (accelerometer, gyroscope, pressure sensors) and activates visual and audio cues without requiring manual intervention from the user. The microcontroller processes sensor data to identify gait disturbances and autonomously triggers the appropriate cueing modality, enabling the device to serve itself and the user during critical moments.
Solution Approach 2:
The system continuously monitors gait parameters through sensors and uses this feedback to automatically adjust and activate cueing when FOG episodes are detected. The feedback loop involves sensing gait disturbances, processing the data through a microcontroller, and responding with appropriate visual or audio cues to help the user overcome the freezing episode.
2Adaptability or versatility
If static or fixed visual cue lines are used, then the device complexity is reduced, but the system cannot adapt to changing gait patterns of Parkinson's patients
Solution Approach 1:
The visual cue lines are made dynamic through the use of movable laser projectors that can adjust their position and orientation based on real-time gait analysis. The system adapts the laser line position, angle, and movement patterns to match the user's changing gait requirements, transforming a static cueing system into a dynamic one that responds to user needs.
Solution Approach 2:
The system changes multiple parameters of the visual cues including laser line position, angle, color, and movement patterns based on detected gait characteristics. The microcontroller adjusts these parameters in real-time to optimize cueing effectiveness for different gait phases and user conditions, enabling adaptation to changing gait patterns.
3Ease of operation
If automatic detection and activation of cues is implemented, then ease of operation improves, but the device complexity and use of energy increase
Solution Approach 1:
The system uses periodic sensing and processing cycles rather than continuous operation. Sensors take measurements at specific intervals, the microcontroller processes data in discrete cycles, and cues are activated only when FOG episodes are detected. This periodic operation reduces energy consumption compared to continuous monitoring and activation while maintaining automatic responsiveness.
4Ease of operation
If remote control capability is added to the walker, then independence and ease of operation improve, but device complexity increases
Solution Approach 1:
The remote control system is integrated with the existing walker's control electronics, allowing a single device to serve multiple functions: FOG detection, visual cue activation, audio cue activation, and remote control operations. The microcontroller and communication module handle both automatic cueing and remote commands, reducing overall system complexity through multi-functionality.
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
This solution enhances mobility and independence for Parkinson's patients by providing adaptive and automatic visual and audio cues, reducing the risk of falls and improving gait stability through continuous cueing and remote control of the walker's braking system.
Implementation Method 1
The communication module (e.g., NFC/PAN) is capable of transmitting data to and from consumer electronic devices such as, but not limited to, cell phones, personal data assistants, tablets, and laptops.
Implementation Method 2
The cueing may include, but is not limited to, a series of colored laser lines
Data Source
AI summary
Walker including a frame, a movement enabling system on the frame that enables the frame to be moved along a surface, and a cueing system that generates audio and/or visual cues to enable a user of the walker to be guided in their forward movement of the walker. The cueing system includes a control unit that generates signals based on stored content relating to cue generation, at least one cue generator that generates the audio and/or visual cues based on the signals generated by the control unit, and a communications module coupled to the control unit and that receives via at least one communications frequency transmissions to set or modify the stored content. The control unit sets or modifies the stored content based on the transmissions received by the communications module.