Urogenital Cleansing Composition pH Control

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Solution Overview

Problem

Cleansing compositions for the urogenital area often irritate the delicate mucous membrane due to difficulty in maintaining pH balance and hydration, especially without the use of additional emulsifiers.

Innovation Solution

A urogenital cleansing composition comprising non-ionic cellulose ether, aqueous solvent, triglyceride oil, and a lactate buffer, mixed to a pH of 3-4 without additional emulsifiers, providing a stable and hydrating effect by maintaining viscosity and osmolality within specific ranges.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If conventional cleansing compositions are used for the urogenital area, then cleaning effect is achieved, but the delicate mucous membrane is irritated due to pH imbalance and dehydration

Engineering Contradiction:

Improveirritation to mucous membraneVSAvoidpH balance maintenance

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent adjusts the pH of the cleansing composition to match the physiological pH range (3.5-5.5) of the urogenital area, and modifies the osmolality to be isotonic with body fluids. These parameter changes ensure the composition is non-irritating while maintaining cleaning effectiveness.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses specific surfactants with mild structures as intermediaries that can effectively remove dirt and oils without disrupting the pH balance or causing dehydration. These surfactants act as mediators between cleaning efficacy and mucous membrane protection.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If additional emulsifiers are added to improve cleansing performance, then cleaning effectiveness increases, but the risk of irritation and pH disruption increases

Engineering Contradiction:

Improvecleaning effectivenessVSAvoidirritation and pH disruption

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent selects surfactants with specific local qualities - mild molecular structures that are effective at the application site (urogenital area) without causing systemic irritation. The surfactant concentration and type are locally optimized for this sensitive area.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent employs a composite formulation combining multiple mild surfactants, pH buffers, and moisturizing agents. This composite approach achieves effective cleaning while the buffer system maintains pH balance and prevents dehydration, counteracting potential irritation from surfactants.

Inventive Principle:

Principle #40Composite materials

3Object-affected harmful factors

If the composition is formulated without additional emulsifiers to reduce irritation, then mucous membrane protection improves, but achieving homogenous mixing and stable viscosity becomes difficult

Engineering Contradiction:

Improvemucous membrane protectionVSAvoidhomogenous mixing and viscosity stability

Core Design Contradiction:

Object-affected harmful factorsVSStability of the object's composition

Solution Approach 1:

The patent uses surfactants that inherently provide emulsifying and thickening properties without requiring additional emulsifier additives. The surfactant molecules self-organize to stabilize the formulation, and the pH buffer system self-regulates to maintain viscosity stability throughout the product shelf life.

Inventive Principle:

Principle #25Self-service

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 composition effectively cleans the urogenital area without dehydration, maintaining the pH balance and providing a pleasant, hydrating experience without leaving residues, thus preventing irritation.

Implementation Method 1

comprising a non-ionic cellulose ether and a triglyceride oil, wherein the non-ionic cellulose ether, the aqueous solvent, the triglyceride oil, and the pH-regulating agent are homogenously mixed

Methodology Applied

Scientific EffectGel formation: Gel

Implementation Method 2

a pH-regulating agent, the composition having a pH within the range of from 3 to 4, wherein the pH-regulating agent is a lactate buffer

Methodology Applied

Scientific EffectBuffering:

Implementation Method 3

at least one triglyceride oil... providing a stable and hydrating effect

Methodology Applied

Scientific EffectLipid hydration:

Implementation Method 4

wherein the non-ionic cellulose ether, the aqueous solvent, the triglyceride oil, and the pH-regulating agent are homogenously mixed

Methodology Applied

Scientific EffectHomogeneous mixing:

Data Source

PatentUS11679071B2Urogenital cleansing composition

Publication Date: 2023.06.20 PEPTONIC MEDICAL AB

AI summary

Described is a urogenital cleansing composition that includes a non-ionic cellulose ether, an aqueous solvent, a triglyceride oil and a pH-regulating agent, wherein the urogenital cleansing composition does not contain any additional emulsifier and have a pH within the range of from 3 to 4 and wherein the pH-regulating agent is a lactate buffer.