Microtiter Plate Coating via Segmented Membrane Insertion

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

The production of microtiter plates with capture molecule coatings is complex and prone to errors due to the need for precise positioning of dispensing capillaries within narrow well spaces, making it difficult to efficiently and reliably produce and evaluate these plates using digital image processing.

Innovation Solution

A method involving carrier membrane segments with blot line coatings is used, where the segments are positioned and fixed on a carrier layer segment outside the well, allowing for easier application and positioning within the microtiter plate, enabling standard line coating devices to be used and facilitating modular configuration of capture molecule coatings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If dispensing capillaries are positioned and moved within narrow well spaces to apply capture molecule coatings directly to well bottoms, then precise positioning and application can be achieved, but the device complexity and difficulty of operation increase significantly

Engineering Contradiction:
Improvepositioning precision of capture molecule coatingsVSAvoidcomplexity of positioning tools
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The microtiter plate is divided into modular components: a carrier layer with multiple wells, and separate membrane segments that can be independently prepared and then inserted into the wells. This segmentation allows the capture molecule coating process to be performed on flat membranes outside the narrow well spaces, avoiding the need for complex positioning tools within the wells while maintaining precise positioning through the modular assembly structure.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If dispensing capillaries are precisely positioned within narrow well spaces to apply multiple antigen spots, then multi-parameter analysis can be achieved, but the ease of operation and productivity decrease

Engineering Contradiction:
Improvemulti-parameter analysis capabilityVSAvoidease of applying capture molecule coatings
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

Multiple blot lines with different capture molecules are pre-applied to separate membrane segments outside the microtiter plate wells using standard line coating devices. These pre-prepared membrane segments are then inserted into the wells as complete units. This preliminary action eliminates the need for complex real-time positioning and dispensing operations within the narrow well spaces, significantly improving ease of operation while maintaining multi-parameter analysis capability through the diverse capture molecules on the membrane segments.

Inventive Principle:
Principle #10Preliminary action

3Adaptability or versatility

If manual or semi-automated methods are used to position and apply capture molecule coatings in wells, then flexibility is maintained, but productivity and reliability decrease

Engineering Contradiction:
Improveflexibility in production methodVSAvoidproduction efficiency of microtiter plates
Core Design Contradiction:
Adaptability or versatilityVSProductivity

Solution Approach 1:

The production process is segmented into independent steps: preparing membrane segments with capture molecule coatings using standard devices, and then inserting these segments into microtiter plate wells. This segmentation enables parallel processing of multiple membrane segments, significantly improving productivity while maintaining flexibility in choosing the specific capture molecules to be applied on the membrane segments.

Inventive Principle:
Principle #1Segmentation

4Manufacturing precision

If complex positioning systems are used to apply capture molecule coatings within wells, then positioning precision is improved, but the reliability and ease of evaluation using digital image processing decrease

Engineering Contradiction:
Improvepositioning accuracy of coatingsVSAvoidreliability of digital image processing evaluation
Core Design Contradiction:
Manufacturing precisionVSReliability

Solution Approach 1:

Instead of applying capture molecule coatings directly to the curved well bottoms where positioning is difficult and evaluation is problematic, the invention inverts the approach by applying the coatings to flat membrane segments outside the wells. The membrane segments are then inserted into the wells in a standardized orientation, ensuring both precise positioning and optimal conditions for digital image processing evaluation, as the blot lines are applied on flat surfaces with controlled geometry.

Inventive Principle:
Principle #13The other way round (Inversion)

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 approach simplifies the production of microtiter plates by reducing the complexity of positioning tools within the well, allowing for precise and efficient application of capture molecule coatings, and enables reliable optical evaluation using digital image processing.

Implementation Method 1

The support membranes are coated with respective first and second blot lines

Methodology Applied
Scientific EffectAdsorption: Adsorption

Implementation Method 2

The conjugate catalyzes a color reaction with a subsequently added substrate. The substrate is preferably nitroblue tetrazolium chloride/5-bromo-4-chloro-3-indolyl phosphate (NBT/BCIP). If specific antibodies are present in the patient sample, a discoloration or a dark line appears

Methodology Applied
Scientific EffectEnzyme catalysis: Enzyme

Data Source

PatentEP4239336B1Method of manufacturing a microtitration plate with capture molecular coatings and microtitration plate
Publication Date: 2024.01.10 EUROIMMUN MEDIZINISCHE LABORDIAGNOSTIKA
  • EP4239336B1 patent drawingFigure 1
  • EP4239336B1 patent drawingFigure 2a~2e
  • EP4239336B1 patent drawingFigure 3a~3e

AI summary

A method for producing a microtiter plate with capture molecule coatings is proposed, comprising providing a first support membrane and a second support membrane, coating the first support membrane with the respective first blot lines, coating the second support membrane with the respective second blot lines, separating a first membrane segment from the first support membrane M1, separating a second membrane segment from the second support membrane, positioning and fixing the first membrane segment on a support layer, positioning and fixing the second membrane segment on the support layer, separating a support layer segment from the support layer which has the first and the second membrane segment, and positioning and fixing the support layer segment in a well of the microtiter plate.