Metal Mesh Sterilization Verification via Photosensitive Organic Material

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Solution Overview

Problem

Existing cell trapping systems face difficulties in determining whether the metal mesh filters have been sterilized and cleaned, as the conditions before and after these processes do not significantly differ, making it challenging to assess their effectiveness.

Innovation Solution

A metal mesh with photosensitive organic material attached to its surface and through-holes, which undergoes modifications upon sterilization or cleaning, allowing for determination through absorbance measurements or carbon content analysis, enabling efficient sterilization and cleaning verification.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If sterilization and cleaning processes are applied to the metal mesh filter, then the filter is sterilized and cleaned, but it becomes difficult to determine whether these processes have been completed

Engineering Contradiction:

Improvesterilization and cleaning effectivenessVSAvoiddetermination of sterilization and cleaning status

Core Design Contradiction:

ReliabilityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent applies a photosensitive organic material to the metal mesh filter that undergoes color changes or modifications when exposed to sterilization or cleaning processes. This allows visual or instrumental detection of whether these processes have been completed, resolving the difficulty of determining sterilization and cleaning status while maintaining their effectiveness

Inventive Principle:

Principle #32Color changes

2Object-affected harmful factors

If the metal mesh filter is sterilized and cleaned, then contamination is removed, but the conditions before and after these processes do not differ significantly, making verification difficult

Engineering Contradiction:

Improvecontamination removalVSAvoidinformation about process completion

Core Design Contradiction:

Object-affected harmful factorsVSLoss of information

Solution Approach 1:

The patent introduces a photosensitive organic material as an intermediary substance applied to the metal mesh filter. This material serves as a mediator that provides detectable information about sterilization and cleaning process completion, allowing verification of contamination removal without significantly altering the filter's functional conditions

Inventive Principle:

Principle #24Intermediary (Mediator)

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 allows for easy and efficient determination of sterilization and cleaning status of the metal mesh, ensuring effective filtration and reducing the complexity of assessing inner wall sterilization and cleaning, which are typically difficult to verify.

Implementation Method 1

The photosensitive organic material may be a radiation-sensitive organic material that undergoes a modification by radiation exposure

Methodology Applied

Scientific EffectPhotosensitive material modification by radiation: Photopolymerisation

Implementation Method 2

determining whether the metal mesh has been sterilized on the basis of a modification of the photosensitive organic material

Methodology Applied

Scientific EffectAbsorbance measurement: Absorption Spectroscopy

Data Source

PatentUS10183083B2Metal mesh, sterilization determination method, and cleaning determination method

Publication Date: 2019.01.22 MURATA MFG CO LTD

AI summary

A metal mesh has a plurality of through-holes. A photosensitive organic material is attached to at least part of the metal mesh. The metal mesh is sterilized and/or cleaned. A determination of whether or not the sterilization and/or cleaning has been successful is made by analyzing the photosensitive organic material attached to the metal mesh.