Epidural Stimulation Segmentation for Paralysis Recovery
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Solution Overview
Problem
Current spinal cord stimulation systems are inadequate for facilitating complex motor movements and mitigating secondary consequences of paralysis, as they are designed to run only one stimulation program at a time, limiting their effectiveness in patients with severe spinal cord injuries.
Innovation Solution
The use of high-density epidural electrode arrays with precise stimulation configurations and intense task-specific training to generate unique electrical fields, allowing for the recovery of motor function and physiological responses such as standing, stepping, and autonomic control by mapping motor-evoked responses and optimizing electrode stimulation parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional spinal cord stimulation systems are used, then the system structure is simple and easy to operate, but the system can only run one stimulation program at a time, limiting its ability to facilitate complex motor movements and mitigate secondary consequences of paralysis
Solution Approach 1:
The stimulation system is segmented into multiple independent stimulation programs, each targeting specific motor functions or physiological responses. The electrode array is divided into multiple independently controllable electrode groups that can be activated in different patterns across multiple programs, allowing complex motor movements and secondary consequence mitigation to be achieved through coordinated execution of multiple segmented programs.
Solution Approach 2:
The epidural stimulation system is designed with multi-functionality to perform diverse therapeutic functions simultaneously or sequentially. A single electrode array configuration can deliver multiple stimulation programs targeting different spinal cord segments and functions (motor control, autonomic regulation, pain management), making the system universally applicable to various paralysis-related conditions without requiring separate dedicated systems for each function.
2Reliability
If high-density epidural electrode arrays with precise stimulation configurations are used, then motor function and physiological responses are significantly improved, but the device complexity and stimulation program coordination become challenging
Solution Approach 1:
The stimulation system employs dynamic electrode configurations where electrode activation patterns are continuously adjusted based on real-time feedback and task requirements. The system transitions smoothly between different stimulation programs and electrode configurations to match the dynamic nature of motor tasks and physiological responses, optimizing motor function recovery while managing complexity through adaptive, task-specific pattern coordination.
Solution Approach 2:
The system incorporates feedback mechanisms to monitor motor responses and physiological parameters, using this information to automatically adjust stimulation patterns and coordinate multiple programs. Sensors detect muscle activation, movement quality, and autonomic responses, feeding this data back to the control system which then optimizes electrode activation patterns, ensuring reliable motor function recovery while reducing the manual coordination burden through closed-loop control.
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
Significant improvements in motor function and physiological responses, including voluntary muscle control, cardiovascular, respiratory, and bladder function, are achieved, providing a therapeutic alternative for individuals with paralysis and reducing healthcare costs.
Implementation Method 1
epidural electrical stimulation (ES) of the spinal cord in patients with incomplete and complete motor paralysis
Data Source
Figure 1A~1C
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AI summary
Embodiments of the present invention relate to methods for applying epidural electrical stimulation to improve motor function or physiological responses in paralyzed individuals. More particularly, the present invention relates to methods for creating and applying specific configurations of epidural stimulation to assist or cause a patient to perform a complex motor function or to mitigate one or more secondary consequences of paralysis including, but not limited to, cardiovascular, respiratory, bladder, temperature and sexual dysfunction.