Sterile Electrode Array Packaging for Conductivity Testing
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Solution Overview
Problem
Current cochlear implants face challenges in testing for open and short circuits without exposing the electrode array to a nonsterile environment, which can compromise sterility and affect implantation readiness.
Innovation Solution
A sterile packaging system that allows for inductance communication and conductivity testing between electrodes while maintaining the electrode array in a sterile sealed state, using conductive materials to establish electrical connections for testing without opening the package.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the electrode array is exposed to a nonsterile environment for testing, then conductivity testing can be performed, but sterility is compromised
Solution Approach 1:
A sterile adapter or interface is introduced as an intermediary component that allows conductivity testing equipment to connect to the electrode array through the sterile packaging barrier. This mediator enables electrical signal transmission while maintaining the sterile seal, preventing direct contact between nonsterile testing equipment and the sterile electrode array.
Solution Approach 2:
The packaging system is segmented into distinct functional zones: a sterile interior compartment containing the electrode array, and an exterior interface region that accommodates testing equipment. This segmentation allows the sterile environment to be preserved while providing access points for noninvasive testing through the packaging structure.
2Productivity
If the package is opened to test the electrode array, then comprehensive testing can be performed, but contamination risk increases
Solution Approach 1:
The packaging system incorporates pre-integrated testing features and access points that allow essential conductivity and functionality tests to be performed before opening the package. This preliminary action enables quality verification while the sterile seal remains intact, ensuring that only arrays passing these initial tests proceed to full testing after opening.
Solution Approach 2:
Physical contact-based testing methods are replaced with noncontact or minimally invasive testing techniques. For example, inductive coupling or capacitive sensing methods are used to assess electrode functionality through the packaging material, eliminating the need to mechanically open the sterile barrier for initial quality assessment.
3Reliability
If the electrode array is tested in a sterile sealed state, then sterility is maintained, but testing accuracy may be reduced
Solution Approach 1:
The packaging system incorporates conductive materials or coatings with controlled electrical properties that can be adjusted to optimize signal transmission through the package. By modifying parameters such as material conductivity, thickness, or geometric configuration, the system maintains sterility while minimizing degradation of testing accuracy.
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 reliable testing for open and short circuits within the sterile packaging, ensuring the cochlear implant remains sterile and ready for implantation, reducing the risk of contamination and improving testing efficiency.
Implementation Method 1
the package is made of a conductive material that establishes conductivity between two electrodes
Implementation Method 2
A sterile packaging system that allows for inductance communication and conductivity testing between electrodes
Data Source
AI summary
An apparatus, including a sterilely sealed package, and an electrode assembly sterilely sealed in the package, wherein the apparatus is configured to enable testing for an open circuit between two electrodes of the electrode assembly with the electrode assembly sterilely sealed in the package.