Activity-Responsive Neural Stimulation for Blood Pressure Regulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current implantable medical devices are inadequate in effectively managing hypertension and heart failure, as they fail to provide precise modulation of neural stimulation based on activity levels, leading to suboptimal blood pressure regulation and cardiac output.
Innovation Solution
An implantable system that includes an activity monitor and a neural stimulator, which senses activity levels to modulate neural stimulation therapy, providing increased stimulation during rest and reducing it during exercise, thereby mimicking natural blood pressure responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If neural stimulation is continuously applied to manage hypertension and heart failure, then blood pressure regulation and cardiac output are maintained, but the system fails to adapt to varying activity levels resulting in suboptimal therapy
Solution Approach 1:
The neural stimulation system dynamically adjusts stimulation parameters based on detected activity levels. The device transitions from static continuous stimulation to dynamic activity-responsive stimulation, where stimulation intensity and duration are modulated according to real-time physiological state, thereby achieving both adaptability and reliable blood pressure control
Solution Approach 2:
The system incorporates feedback mechanisms by detecting activity levels and using this information to modulate neural stimulation delivery. The feedback loop ensures that stimulation is optimized according to actual physiological needs, improving both adaptability to activity changes and reliability of therapeutic effect
2Reliability
If neural stimulation intensity is increased to improve blood pressure regulation, then therapeutic effect is enhanced, but energy consumption and device complexity increase
Solution Approach 1:
The system employs dynamic adjustment of stimulation intensity based on activity level detection. During low activity periods when blood pressure control is most needed, stimulation intensity is increased. During high activity periods when natural physiological responses are sufficient, stimulation is reduced or suspended, thereby maintaining reliable therapy while minimizing energy consumption
Solution Approach 2:
The device changes stimulation parameters (intensity, duration, frequency) based on detected activity levels. This parameter modulation allows the system to deliver high-intensity stimulation only when necessary for blood pressure control, rather than maintaining constant high intensity, thus reducing overall energy consumption while preserving therapeutic reliability
3Measurement precision
If activity monitoring and automatic modulation features are added to the neural stimulator, then therapy precision is improved, but device complexity increases
Solution Approach 1:
The neural stimulator is designed with multi-functionality, integrating both neural stimulation delivery and activity level detection within a single device. This universal design allows the device to perform multiple functions (stimulation, sensing, processing, and modulation) without requiring separate dedicated devices, thereby improving measurement precision while limiting the increase in overall system complexity
Data Source
AI summary
According to an embodiment of a method for providing neural stimulation, activity is sensed, and neural stimulation is automatically controlled based on the sensed activity. An embodiment determines periods of rest and periods of exercise using the sensed activity, and applies neural stimulation during rest and withdrawing neural stimulation during exercise. Other embodiments are provided herein.