Sequenced Sensing Blocks for Adaptive Neurostimulation Control
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Solution Overview
Problem
Existing neurostimulation systems face challenges in effectively controlling the spatial and temporal aspects of signal sensing and delivery, which are crucial for ensuring the efficacy and safety of therapies such as DBS, SCS, and PNS, due to the need for precise sensing at different locations and frequencies.
Innovation Solution
A neurostimulation system that employs a programmable sequence of sensing blocks, allowing for spatial and temporal control of signal sensing, using a combination of implantable and external sensors, and a control circuit to adjust sensing parameters dynamically based on processed signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed sensing configuration is used, then the device complexity is reduced, but the adaptability to different sensing locations and frequencies is worsened
Solution Approach 1:
The sensing operation is divided into multiple sensing blocks, each configured to sense signals at specific locations and frequencies. The control circuit sequentially executes these segmented sensing blocks, allowing the system to adapt to different sensing requirements without requiring multiple physical sensors or complex reconfiguration hardware.
Solution Approach 2:
The sensing configuration is made dynamic through the control circuit's ability to sequentially change sensing parameters (location, frequency, duration) between different sensing blocks. This dynamic reconfiguration allows the system to adapt to varying therapeutic needs while using a single physical sensing circuit.
2Measurement precision
If sensing parameters are changed dynamically, then the measurement precision is improved, but the device complexity is worsened
Solution Approach 1:
The sensing blocks are pre-configured with specific sensing parameters (locations, frequencies, durations) before execution. The control circuit sequentially retrieves and applies these pre-defined configurations, enabling precise adaptive sensing without requiring complex real-time calculation or reconfiguration logic during operation.
3Reliability
If multiple sensing locations and frequencies are monitored simultaneously, then the reliability of therapy control is improved, but the device complexity is worsened
Solution Approach 1:
The control circuit monitors multiple sensing locations and frequencies by sequentially executing sensing blocks in a periodic or event-driven manner. Each sensing block is configured for a specific location and frequency, and the control circuit cycles through these blocks based on therapeutic needs, achieving comprehensive monitoring through time-division multiplexing rather than simultaneous parallel sensing.
Data Source
AI summary
An example of a system for delivering neurostimulation to a patient and controlling the delivery of neurostimulation using sensors may include a stimulation output circuit, a sensing circuit, and a control circuit. The stimulation output circuit may be configured to deliver the neurostimulation. The sensing circuit may be configured to receive sensed signals from the sensors and to process the sensed signals. The sensing circuit has adjustable settings controlling the processing of the sensed signals. The control circuit may be configured to control the delivery of the neurostimulation using the processed sensed signals and to control the settings of the sensing circuit according to a sequence of sensing blocks each including a set of sensing parameters.