Cochlear Implant Lead Insertion With Evoked Response Frequency Stepping
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Solution Overview
Problem
Existing electrode lead insertion procedures lack effective methods for monitoring evoked responses during cochlear implantation, making it difficult to determine electrode positioning, assess trauma, and evaluate residual hearing, which are crucial for ensuring proper placement and minimizing cochlear damage.
Innovation Solution
A diagnostic system that applies acoustic stimulation with incrementally decreasing stimulus frequencies and records evoked responses to generate optimized feedback, using excitation spread measurements and real-time graph plotting to guide electrode insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If acoustic stimulation is applied during electrode lead insertion, then evoked response signals can be monitored to determine electrode positioning and assess trauma, but the complexity of the diagnostic system increases
Solution Approach 1:
The diagnostic system performs multiple functions using a unified approach: it monitors evoked response signals to determine electrode positioning, assess trauma, and evaluate residual hearing all through the same acoustic stimulation and signal recording mechanism, thereby reducing overall system complexity despite the multiple applications
Solution Approach 2:
The system provides real-time feedback by continuously monitoring evoked response signals during the insertion procedure, allowing the surgeon to adjust the insertion process based on immediate responses, which improves positioning accuracy while maintaining system manageability through automated feedback loops
2Reliability
If real-time monitoring of evoked responses is implemented, then trauma detection and residual hearing assessment improve, but the time required for the insertion procedure increases
Solution Approach 1:
The acoustic stimulation and evoked response monitoring occur continuously throughout the insertion procedure without interruption, allowing trauma detection and residual hearing assessment to be performed simultaneously with the insertion process itself, thereby adding minimal time to the overall procedure
Solution Approach 2:
The system performs trauma detection and residual hearing assessment during the insertion process itself rather than requiring separate post-insertion evaluations, effectively conducting these critical checks in advance and eliminating the need for additional time-consuming steps afterward
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
Provides accurate, real-time feedback on electrode positioning, trauma detection, and residual hearing assessment, enhancing the precision and safety of electrode lead placement within the cochlea.
Implementation Method 1
a diagnostic system may direct an acoustic stimulation generator to apply acoustic stimulation having a stimulus frequency to a recipient
Data Source
AI summary
A diagnostic system is disclosed that is configured to direct an acoustic stimulation generator to apply acoustic stimulation having a stimulus frequency to a recipient of a cochlear implant during an insertion procedure in which an electrode lead communicatively coupled to the cochlear implant is inserted into a cochlea of the recipient, direct the cochlear implant to use an electrode disposed on the electrode lead to record an evoked response signal during the insertion procedure, the evoked response signal representing amplitudes of a plurality of evoked responses that occur within the recipient in response to the acoustic stimulation applied to the recipient, and incrementally step, as the electrode lead is inserted into the values starting with an initial value and ending with a final value lower than the initial value.