Cochlear Implant Humidity Sensor Control
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Solution Overview
Problem
Existing implants face challenges in detecting and responding to moisture buildup, which can lead to incorrect stimulation and require subjective patient feedback or inconvenient corrective measures, as existing solutions like humidity sensors and telemetry systems are not effectively interpreted in a timely manner.
Innovation Solution
Incorporating a self-test module and humidity sensor within the implant, coupled with a controller that generates signals indicative of humidity conditions, allowing for autonomous control of the implant's stimulator and power management, such as producing alerts or turning off power when moisture levels exceed thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a humidity sensor is incorporated within the implant to detect moisture buildup, then the reliability of the implant is improved, but the device complexity increases
Solution Approach 1:
The patent combines the humidity sensor, controller, and stimulator into a single integrated implantable device. The sensor and controller are merged within the same housing as the stimulator, eliminating the need for separate monitoring devices and reducing overall system complexity while maintaining reliability.
Solution Approach 2:
The implant performs self-monitoring through the integrated humidity sensor and self-control through the controller that automatically adjusts or inhibits stimulator output based on detected moisture levels. This eliminates the need for external monitoring systems or patient subjective feedback, making the system self-sufficient.
2Object-affected harmful factors
If the controller inhibits stimulator output or provides alerts based on humidity signals, then the harmful effects of moisture are reduced, but the loss of useful stimulation function occurs
Solution Approach 1:
The controller dynamically adjusts the stimulator output based on real-time humidity readings. Instead of a static on/off approach, the system can modulate stimulation parameters such as amplitude, pulse width, or frequency in response to changing moisture conditions, maintaining therapeutic efficacy while avoiding moisture-related damage.
Solution Approach 2:
The system implements a closed-loop feedback mechanism where the humidity sensor continuously monitors moisture levels and feeds this information to the controller, which then adjusts the stimulator output accordingly. This feedback loop ensures that stimulation is maintained when conditions are safe and inhibited only when necessary to prevent harm.
3Device complexity
If subjective feedback from patients is used to detect stimulation issues, then no additional hardware is needed, but the measurement precision and timeliness are insufficient
Solution Approach 1:
The patent replaces the mechanical/subjective feedback mechanism (patient reporting) with an electronic sensing system (humidity sensor). The sensor provides objective, quantifiable measurements of moisture levels, eliminating the imprecision and delay inherent in subjective patient feedback.
Solution Approach 2:
The humidity sensor acts as an intermediary between the moisture environment and the controller, providing accurate intermediate measurements that enable precise control decisions. This intermediary component translates physical moisture conditions into electrical signals that the controller can process.
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
This solution enables timely and convenient monitoring and response to humidity changes within the implant, reducing the need for patient feedback and improving the reliability of implant operations by preventing over-stimulation and ensuring proper functioning.
Implementation Method 1
a humidity sensor for generating a signal indicative of humidity within the implant
Data Source
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Figure 2
AI summary
A cochlear implant includes an electrode array, a stimulator and a sensor for generating a signal indicative of an environmental condition within the implant. A controller within the implant receives the signal indicative of an environmental condition, and controls the implant based on the signal indicative of an environmental conditon.