Preloaded Analysis Module with Barrier Material for Reagent Release

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Solution Overview

Problem

PCR-based assays are tedious, time-consuming, prone to contamination, and labor-intensive due to the need for precise reagent handling and storage, especially for temperature-sensitive reagents in clinical diagnostics and biotechnology processes.

Innovation Solution

Preloaded analysis modules with a chamber containing a barrier material immiscible with aqueous media, capable of releasing reagents upon activation, allowing for controlled and efficient reagent delivery during chemical reactions, such as PCR, minimizing user intervention and optimizing reaction conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If reagents are stored at low temperatures to maintain stability, then reagent stability is improved, but device complexity and ease of operation deteriorate due to required refrigeration equipment and careful handling procedures

Engineering Contradiction:
Improvereagent stabilityVSAvoidstorage system complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent transforms reagents from liquid to dried form, fundamentally changing the physical state parameter. This allows reagents to be stored at ambient temperatures without refrigeration, eliminating the need for complex cooling equipment while maintaining stability. The dried reagents can be readily reconstituted when needed.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent performs preliminary drying of reagents before storage, removing the need for continuous refrigeration. The reagents are prepared in advance in a stable dried state, and only require simple reconstitution with water or buffer when needed for the reaction, greatly simplifying the storage system.

Inventive Principle:
Principle #10Preliminary action

2Stability of the object's composition

If reagents are thawed and introduced into the PCR chamber just prior to the reaction, then reagent stability is maintained, but loss of time and productivity worsen due to additional preparation steps

Engineering Contradiction:
Improvereagent stabilityVSAvoidpreparation time
Core Design Contradiction:
Stability of the object's compositionVSLoss of time

Solution Approach 1:

The patent performs preliminary drying of reagents directly in the PCR chamber or on the reaction plate before storage. This eliminates the time-consuming steps of thawing and transferring reagents from separate storage containers, as they are already in the correct location in a stable dried state and can be quickly reconstituted.

Inventive Principle:
Principle #10Preliminary action

3Measurement precision

If precise quantities of reagents are manually handled and introduced into the reaction vessel, then measurement precision is improved, but ease of operation and productivity worsen due to labor-intensive procedures

Engineering Contradiction:
Improvereagent quantity precisionVSAvoidoperational simplicity
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The patent performs preliminary drying of precise reagent quantities directly in the final reaction chamber or on the reaction plate. This eliminates the need for separate measuring, aliquoting, and transferring steps, reducing both labor and contamination risk while maintaining precision through direct deposition.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent combines multiple steps (reagent storage, precise measurement, and chamber introduction) into a single integrated dried reagent format. The reagents are dried directly in the reaction chamber or on the plate, merging storage and delivery functions into one simple component.

Inventive Principle:
Principle #5Merging (Combining)

4Measurement precision

If multiple reagents are stored and handled separately to maintain precise quantities, then measurement precision is improved, but device complexity and ease of operation worsen due to multiple storage and handling procedures

Engineering Contradiction:
Improvereagent quantity precisionVSAvoidstorage and handling system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent merges multiple reagent storage and handling operations into a single dried reagent format that can be stored indefinitely at ambient temperature. The precise quantities are established during the drying process, and all reagents can be stored together in a simple container without separate refrigerated storage for each reagent.

Inventive Principle:
Principle #5Merging (Combining)

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 efficient, controlled, and minimally invasive reagent release for PCR and other reactions, reducing contamination risks and labor, while maintaining reagent stability for extended storage and ensuring optimal reaction conditions, thus improving the efficiency and reliability of PCR-based assays.

Implementation Method 1

the barrier material being capable of being activated so as to release material disposed within the barrier material

Methodology Applied
Scientific EffectPhase change: Phase Change

Data Source

PatentUS8911938B2Reaction chamber having pre-stored reagents
Publication Date: 2014.12.16 THE TRUSTEES OF THE UNIV OF PENNSYLVANIA
  • US8911938B2 patent drawing
  • US8911938B2 patent drawing
  • US8911938B2 patent drawing

AI summary

Disclosed are preloaded analysis modules comprising reagents disposed within a barrier material capable of liberating the reagents, at a time advantageous to a reaction scheme, when exposed to certain activation conditions or reagents. Also disclosed are related methods for analyzing samples with such modules.