Acoustic Feedback for Cochlear Implant Electrode Insertion Monitoring
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Solution Overview
Problem
Current systems for monitoring evoked responses during electrode lead insertion into the cochlea lack effective feedback mechanisms that allow surgeons to assess the insertion process without diverting their attention from the procedure, potentially leading to unnoticed trauma or improper placement.
Innovation Solution
A diagnostic system that maps evoked response amplitudes to audible pitches, providing acoustic feedback to indicate amplitude changes during the insertion procedure, allowing surgeons to monitor the insertion process without visual distraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual monitoring methods (display screens, graphical interfaces) are used to monitor evoked response amplitudes during insertion, then measurement precision is improved, but ease of operation deteriorates because the surgeon must divert visual attention from the insertion procedure
Solution Approach 1:
The patent replaces visual monitoring mechanisms (display screens, graphical interfaces) with an acoustic feedback mechanism that converts evoked response amplitude data into audible signals. This allows the surgeon to monitor insertion progress through sound rather than sight, eliminating the need to divert visual attention from the surgical field while maintaining continuous monitoring capability
Solution Approach 2:
The system introduces an acoustic intermediary that translates electrical signals (evoked response amplitudes) into audible feedback. This intermediary channel allows information transfer from the monitoring system to the surgeon without requiring visual engagement with display devices, thus resolving the conflict between precise monitoring and surgical focus
2Device complexity
If no feedback mechanism is provided during insertion, then device complexity is reduced, but reliability deteriorates because trauma or improper placement may go unnoticed
Solution Approach 1:
The patent implements a real-time feedback loop where evoked response amplitudes are continuously measured during electrode lead insertion and immediately converted into audible signals. This feedback mechanism provides the surgeon with continuous information about insertion progress and potential trauma, significantly improving insertion safety without requiring complex visual display systems
Solution Approach 2:
The monitoring system utilizes the existing evoked response signals that occur naturally during the insertion procedure itself. By harvesting this inherent physiological feedback and converting it to audible form, the system provides safety monitoring without adding substantial external complexity to the surgical procedure
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 real-time, non-visual feedback on electrode lead advancement and potential trauma, enhancing the surgeon's ability to adjust the insertion accordingly, thus improving the safety and accuracy of the procedure.
Implementation Method 1
A diagnostic system that maps evoked response amplitudes to audible pitches, providing acoustic feedback to indicate amplitude changes during the insertion procedure
Data Source
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AI summary
A diagnostic system may determine a minimum evoked response amplitude and a maximum evoked response amplitude for a recipient of a cochlear implant and determine a mapping between a plurality of audible pitches and a plurality of evoked response amplitudes included in a range defined by the minimum and maximum evoked response amplitudes. The diagnostic system may monitor, during an insertion procedure in which an electrode lead communicatively coupled to the cochlear implant is inserted into a cochlea of the recipient, an evoked response signal recorded during the insertion procedure by an electrode disposed on the electrode lead. As the evoked response signal is being monitored, the diagnostic system may detect an amplitude change in the evoked response signal and present, based on the mapping, acoustic feedback that audibly indicates the amplitude change.