Non-Regular Stimulation Patterns for Parkinson's DBS Efficiency
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Solution Overview
Problem
Conventional deep brain stimulation (DBS) for treating neurological disorders like Parkinson's Disease relies heavily on high-frequency stimulation, which increases power consumption, leads to stronger side effects, and narrows the therapeutic window, while non-regular stimulation patterns have not been fully explored for their clinical efficacy.
Innovation Solution
The development of non-regular temporal patterns of stimulation, where inter-pulse intervals vary over time, potentially reducing the average frequency and intensity of side effects, and employing a genetic algorithm to optimize these patterns for improved therapeutic benefit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high frequency stimulation (>100 Hz) is used to treat Parkinson's Disease, then motor function improvement is achieved, but power consumption increases and side effects strengthen
Solution Approach 1:
The patent applies periodic action by using burst stimulation patterns where high-frequency pulses are delivered in periodic bursts separated by intervals. This maintains therapeutic efficacy while reducing average power consumption compared to continuous high-frequency stimulation. The burst pattern creates periodic activation that preserves motor function improvement while lowering energy demands.
Solution Approach 2:
The patent employs dynamic adjustment of stimulation parameters including varying pulse widths, amplitudes, and inter-burst intervals. This dynamic approach allows optimization of power consumption while maintaining therapeutic effect, adapting the stimulation regime to minimize energy use without sacrificing motor function improvement.
2Reliability
If high frequency stimulation (>100 Hz) is used to treat Parkinson's Disease, then motor function improvement is achieved, but side effects increase
Solution Approach 1:
By using periodic burst stimulation with high-frequency pulses delivered in intermittent bursts, the patent reduces cumulative side effects while preserving motor function improvement. The intervals between bursts allow tissue recovery and reduce the accumulation of harmful effects associated with continuous high-frequency stimulation.
Solution Approach 2:
The patent changes stimulation parameters by using variable pulse widths and amplitudes within the burst pattern. This parameter modulation allows achieving therapeutic motor function improvement while staying below thresholds that generate strong side effects, thus optimizing the therapeutic window.
3Reliability
If high frequency stimulation (>100 Hz) is used to treat Parkinson's Disease, then motor function improvement is achieved, but therapeutic window narrows
Solution Approach 1:
The patent uses dynamic parameter adjustment including variable pulse widths, amplitudes, and burst intervals to expand the therapeutic window. This dynamic control allows flexible optimization that maintains motor function improvement while avoiding side effects, effectively widening the range of acceptable stimulation parameters.
Solution Approach 2:
By implementing multiple adjustable parameters including pulse width, amplitude, and burst timing, the patent creates a broader therapeutic window. These parameter changes allow clinicians to optimize stimulation settings for individual patients, improving adaptability and versatility of the treatment approach.
4Reliability
If high frequency stimulation is used, then clinical efficacy is improved, but battery life decreases
Solution Approach 1:
The periodic burst stimulation pattern delivers high-frequency pulses in intermittent bursts rather than continuously, significantly reducing average power consumption. This extends battery life while preserving clinical efficacy through the periodic activation that maintains therapeutic effect without requiring constant energy delivery.
Solution Approach 2:
The patent applies partial action by delivering high-frequency stimulation only during necessary burst intervals rather than continuously. This partial stimulation approach maintains sufficient clinical efficacy while dramatically reducing overall power consumption and extending battery operational life.
Data Source
AI summary
Systems and methods for stimulation of neurological tissue generate stimulation trains with temporal patterns of stimulation, in which the interval between electrical pulses (the inter-pulse intervals) changes or varies over time. Compared to conventional continuous, high rate pulse trains having regular (i.e., constant) inter-pulse intervals, the non-regular (i.e., not constant) pulse patterns or trains that embody features of the invention provide a lower average frequency. The systems and methods for stimulation of neurological tissue may be used to increase the efficacy of treatment in patients with Parkinson's Disease.