Ventral Spinal Cord Stimulation for Motor Function Restoration
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Solution Overview
Problem
Restoring motor function in patients with stroke, spinal cord injury, and other central nervous system disorders is challenging and often impossible with traditional methods.
Innovation Solution
Ventral spinal cord stimulation (SCS) delivers electrical stimulation through electrodes positioned in the ventral space of the spinal column, configured based on physiological signals to stimulate motor fibers and restore motor function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional methods are used to restore motor function, then the approach is simple and non-invasive, but the effectiveness is poor or impossible
Solution Approach 1:
The patent introduces an intermediary device (ventral spinal cord stimulation system with electrodes and signal generator) that acts as a mediator between the brain and peripheral nerves. The electrodes are positioned in the ventral epidural space to directly stimulate motor fibers, serving as an intermediary pathway that bypasses damaged neural pathways, thereby restoring motor function effectively
Solution Approach 2:
The patent replaces traditional mechanical or pharmacological approaches with an electrical stimulation system. The signal generator produces electrical signals that are delivered through electrodes to stimulate motor fibers directly, substituting complex mechanical rehabilitation or medication with a more precise and effective electrical mechanism
2Reliability
If ventral spinal cord stimulation is applied, then motor function restoration is effective, but the procedure is invasive and complex
Solution Approach 1:
The patent segments the spinal cord stimulation approach by positioning electrodes specifically in the ventral epidural space rather than using conventional dorsal placement. This segmentation allows targeted stimulation of motor fibers in the ventral horn, providing more precise and effective motor function restoration while managing the complexity through specialized positioning
3Reliability
If electrical stimulation is delivered to motor fibers, then motor function is restored, but the control precision must be high
Solution Approach 1:
The patent incorporates feedback mechanisms where the system monitors physiological responses and adjusts stimulation parameters accordingly. The controller receives feedback signals and modifies the electrical stimulation parameters in real-time, ensuring precise control and adaptation to individual patient responses, thereby maintaining high control precision
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
Ventral SCS effectively at least partially restores motor functions by directly modulating descending tracts in the spinal cord, improving muscle control and mobility in affected patients.
Implementation Method 1
Ventral SCS can deliver an electrical stimulation via at least one electrode within the ventral space of the spinal column
Data Source
AI summary
A motor function of a subject can be at least partially restored via electrical stimulation. One or more stimulating electrodes can be positioned within a ventral space of a spinal column of the subject to deliver the electrical stimulation to a motor fiber in the spinal column to at least partially restore the motor function. The one or more stimulating electrodes can be in electrical communication with a signal generator. A controller can be connected to the signal generator, and optionally, one or more sensing elements. The controller can receive a signal comprising at least one input, which can be manual or from the one or more sensing elements; configure the electrical signal to stimulate motor fiber(s) in a descending tract of the spinal cord of the subject based on the at least one input; and send the electrical signal to the signal generator to generate the electrical stimulation.