Carbon Dioxide External Preparation for Skin Application

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Solution Overview

Problem

Carbon dioxide external preparations with multiple components require all components to be mixed before use, making them cumbersome, and mono-component types face issues with weight reduction and physical properties, particularly in non-aqueous gelatinous forms.

Innovation Solution

A pasty carbon dioxide external preparation comprising a paste base agent, alcohol, carbonate, and/or acid-generating substances that react to produce carbon dioxide upon water application, providing continuous effects like vasodilation and wound healing without pre-mixing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple components (viscous aqueous preparations) are used to ensure carbon dioxide generation, then carbon dioxide generation capability is improved, but weight reduction becomes difficult and device complexity increases

Engineering Contradiction:
Improvecarbon dioxide generation capabilityVSAvoidpreparation weight
Core Design Contradiction:
ReliabilityVSWeight of moving object

Solution Approach 1:

The patent combines carbonate and acid components into a single viscous aqueous preparation that can be stored stably without premature carbon dioxide generation. This merging eliminates the need for separate component containers and reduces overall weight while maintaining reliable carbon dioxide generation when applied to the skin.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The single preparation serves multiple functions: it provides the viscous base for skin application, contains both reactive components (carbonate and acid) for carbon dioxide generation, and maintains storage stability. This multi-functionality reduces the number of separate components needed and simplifies the overall system.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If multiple components are mixed before use to generate carbon dioxide, then carbon dioxide generation is ensured, but ease of operation deteriorates due to complex mixing procedures

Engineering Contradiction:
Improvecarbon dioxide generation capabilityVSAvoidease of use
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

By combining carbonate and acid components into a single stable viscous preparation, the patent eliminates the need for complex mixing procedures. The user simply applies the preparation to the skin, and carbon dioxide is generated automatically through the stable formulation, greatly improving ease of operation.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The preparation contains all necessary components and automatically generates carbon dioxide when applied to the skin through the controlled reaction within the viscous matrix. This self-service mechanism eliminates the need for user intervention in the mixing process, simplifying operation.

Inventive Principle:
Principle #25Self-service

3Weight of moving object

If non-aqueous gelatinous form is used to reduce weight, then weight reduction is achieved, but manufacturing precision deteriorates due to difficulty in obtaining evaluable gelatinous properties

Engineering Contradiction:
Improvepreparation weightVSAvoidgel physical property evaluation
Core Design Contradiction:
Weight of moving objectVSManufacturing precision

Solution Approach 1:

The patent modifies the physical parameters of the preparation by using a viscous aqueous formulation with controlled viscosity and water content. This parameter optimization allows the preparation to maintain gel-like properties that can be properly evaluated during manufacturing while still achieving weight reduction compared to traditional heavy gels.

Inventive Principle:
Principle #35Parameter changes

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

The preparation is easy to use, sticks to the skin, and generates carbon dioxide upon water absorption, offering benefits such as vasodilation, muscle recovery, anti-cancer effects, and skin improvements, with improved convenience and effectiveness compared to existing methods.

Implementation Method 1

a paste base agent, an alcohol, a carbonate, an acid and/or a substance that generates an acid by hydrolysis... which react to produce carbon dioxide upon water application

Methodology Applied
Scientific EffectChemical reaction (carbonate + acid): Chemical Bonding

Implementation Method 2

a substance that generates an acid by hydrolysis (hereinafter referred to as 'alternative of acid' in some cases)

Methodology Applied
Scientific EffectHydrolysis: Hydrolysis

Data Source

PatentUS11141394B2Carbon dioxide external preparation
Publication Date: 2021.10.12 TANAKA MASAYA

AI summary

Provided is a nonaqueous carbon dioxide external preparation in single dosage form, the external preparation comprising a paste base, carbonate, an acid and/or a substance which produces an acid by hydrolysis, and alcohol. Merely by being applied onto skin, this external preparation is useful due to obtaining the effect of a specific action of carbon dioxide.