Integrated Brain Stimulation Lead with Recording Electrode
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Solution Overview
Problem
Deep brain stimulation techniques face challenges in precisely locating target neurons due to the need for separate insertion and removal of recording and stimulating leads, often requiring multiple insertions to accurately position the stimulating electrode.
Innovation Solution
A lead with both recording and stimulating electrodes, allowing for precise neuron location using recording electrodes and subsequent alignment of stimulation electrodes without removing the recording lead, featuring a rotatable design facilitated by a non-circular lumen and stylet for improved positioning within the brain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate recording and stimulating leads are used, then the recording electrode can be used to identify target neurons, but multiple insertions and removals are required to position the stimulating electrode precisely
Solution Approach 1:
The patent combines both recording and stimulating electrodes into a single integrated lead assembly. The lead includes a recording electrode and a stimulating electrode positioned at different locations along the same lead body, allowing both functions to be performed without separate insertions. This merging eliminates the need to remove and reinsert leads, reducing procedural complexity while maintaining positioning accuracy through the recording function.
Solution Approach 2:
The lead assembly serves multiple functions simultaneously: it can record electrical signals from target neurons through the recording electrode, provide stimulation through the stimulating electrode, and be positioned using the recording function to identify target locations. This multi-functionality allows a single device to perform what previously required separate recording and stimulating leads, reducing the number of procedural steps.
2Manufacturing precision
If the recording lead is removed and stimulating lead inserted separately, then precise neuron location can be attempted, but multiple insertions are often needed to achieve proper positioning
Solution Approach 1:
The recording electrode is positioned and used to identify target neurons before the stimulating electrode is activated. The lead is inserted with the recording electrode leading, allowing preliminary positioning and verification of target location. Once the recording electrode is properly positioned at or near the target neurons, the stimulating electrode (positioned at a known offset distance) is then activated without removing the lead, ensuring precise placement is achieved in a single insertion.
Solution Approach 2:
The stimulating electrode is effectively nested within the same lead structure that contains the recording electrode. The lead body houses both electrodes in a coordinated arrangement where the recording electrode can be positioned first, and the stimulating electrode is positioned at a predetermined distance from it, allowing both functions to be achieved from a single insertion point.
3Measurement precision
If multiple lead insertions are performed to properly position the stimulating electrode, then positioning accuracy may be improved, but the procedure becomes more complex and time-consuming
Solution Approach 1:
By merging the recording and stimulating functions into a single lead assembly, the patent allows the recording electrode to localize target neurons and the stimulating electrode to be positioned at a known offset, all within one insertion. This eliminates the need for multiple insertions to achieve proper positioning, maintaining localization accuracy while significantly improving procedural efficiency.
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
Enables precise and efficient targeting of neurons with reduced need for multiple lead insertions, enhancing the accuracy and efficiency of deep brain stimulation procedures.
Implementation Method 1
activating the target neurons to generate electrical signals that can be received by the recording electrode
Implementation Method 2
the stimulating electrode provides the stimulation to target neurons in the brain
Data Source
AI summary
A device for brain stimulation that includes a lead having a longitudinal surface; at least one stimulation electrode disposed along the longitudinal surface of the lead; and at least one recording electrode, separate from the at least one stimulation electrode, disposed along the longitudinal surface of the lead.