Adaptive Electrode Arrangement for Uniform Cell Stimulation
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Solution Overview
Problem
Conventional electrode designs for electric field stimulation in cell cultures are impractical due to size constraints and humidity issues in incubators, and they fail to provide a uniform electric field across cells, especially when cells are at the bottom of wells, limiting assay quality and experiment throughput.
Innovation Solution
An adaptive electrode arrangement with independently displaceable electrodes ensures constant contact with the well bottom, providing a uniform electric field regardless of well geometry, allowing for simultaneous electrical stimulation and reagent dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electrode array designs are used, then electrical stimulation can be provided, but the device becomes impractical for routine use in incubators due to size and humidity constraints
Solution Approach 1:
The electrode array is segmented into multiple independently controllable electrodes that can be selectively activated. This allows the system to provide electrical stimulation only where needed while reducing the overall device footprint and making it more adaptable to incubator environments.
Solution Approach 2:
The patent transitions from conventional planar electrode arrangements to a three-dimensional electrode configuration that extends into the well depth. This dimensional change allows electrodes to directly contact cells at the well bottom while maintaining a compact overall structure suitable for incubators.
2Manufacturing precision
If rigid multi-array field stimulation electrode designs are used, then uniform electric field can be generated, but the design requires precisely measuring well depth to ensure uniform field distribution
Solution Approach 1:
The electrode positions are made adjustable rather than fixed, allowing the electrode array to adapt to varying well depths. This dynamic configuration eliminates the need for precise pre-measurement of well depth while maintaining uniform electric field distribution through computational control of electrode positions.
Solution Approach 2:
The system uses computational methods to calculate and adjust electrode positions based on actual well geometry parameters. By changing the positional parameters of electrodes dynamically, the system achieves uniform field distribution without requiring rigid pre-measurement protocols.
3Manufacturing precision
If electrodes are lowered to reach the bottom of the well, then uniform electric field can be applied to cells at the bottom, but the electric field fringes cause non-uniform stimulation
Solution Approach 1:
The patent applies different electrical characteristics to different regions of the electrode array. By controlling the local current distribution and electrode potentials independently, the system creates a uniform electric field in the critical region where cells are located while minimizing fringe effects in other areas.
Solution Approach 2:
The system incorporates feedback mechanisms that monitor the actual electric field distribution and adjust electrode potentials accordingly. This feedback control ensures uniform field distribution and prevents non-uniform stimulation by continuously optimizing electrode parameters based on measured conditions.
4Reliability
If conventional electrode designs are used, then electrical stimulation can be conducted, but reagent dispensing cannot be performed simultaneously
Solution Approach 1:
The electrode array structure is designed to serve multiple functions: electrical stimulation, reagent dispensing, and compatibility with standard incubator environments. The electrodes are positioned and configured to allow reagent delivery systems to access the well without interfering with the electrical stimulation capability, enabling simultaneous operations.
Solution Approach 2:
The patent merges the electrical stimulation function with reagent dispensing capability into a single integrated system. The electrode array and dispensing mechanisms are combined in a way that allows both functions to operate simultaneously, thereby increasing experiment throughput without compromising stimulation reliability.
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 effective external pacing of cells, improves assay quality by ensuring uniform stimulation, and enhances experiment throughput by accommodating varying well geometries and allowing reagent dispensing during stimulation.
Implementation Method 1
an adaptive electrode arrangement for introducing an electric field into the well
Data Source
AI summary
A well for electrically stimulating at least one cell. The well includes a bottom portion and comprises an adaptive electrode arrangement for introducing an electric field into the well. The adaptive electrode arrangement includes a pair of electrodes disposed within the well. Each electrode of the pair of electrodes has a distal end and is independently and axially displaceable relative to the other electrode and the bottom portion of the well. The distal end of each electrode of the pair of electrodes is in contact with the bottom portion of the well, ensuring a uniform and constant electric field is applied within the well.