Acetyl Donor Wound Dressing for Stable Peracetic Acid Generation
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Solution Overview
Problem
Existing wound infection treatments face challenges with storage stability due to the reactivity of peroxygen donor compounds, leading to reduced shelf life and potential spontaneous reactions, which affects the efficacy of antimicrobial agents like hydrogen peroxide and peracetic acid.
Innovation Solution
A wound dressing or wound contact medium containing an acetyl donor compound, free from peroxide compounds, is used in conjunction with a means of applying hydrogen peroxide to activate the acetyl donor and produce peracetic acid in situ, enhancing storage stability and antimicrobial efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If peroxide compounds are included in the wound dressing to provide antimicrobial activity, then the biocidal effect against microorganisms is improved, but the storage stability deteriorates due to spontaneous reactions during storage
Solution Approach 1:
The system is divided into separate components: the wound dressing contains the acetyl donor compound while the peroxide is applied separately through a means of applying hydrogen peroxide. This segmentation prevents spontaneous reactions during storage while enabling the generation of peracetic acid in situ when the components are combined at the wound site.
Solution Approach 2:
The acetyl donor compound is pre-loaded into the wound dressing in an inactive, stable form. The peroxide is applied subsequently to activate the acetyl donor and generate peracetic acid at the wound site. This preliminary preparation allows the dressing to be stored stably while maintaining the capability to produce the active antimicrobial agent when needed.
2Reliability
If the wound dressing contains reactive peroxide compounds to achieve immediate antimicrobial activity, then the potency of antimicrobial activity is improved, but the shelf life is reduced due to reactivity and potential spontaneous reactions
Solution Approach 1:
The acetyl donor compound acts as an intermediary that bridges the stable storage form and the active peracetic acid. It remains stable during storage in the wound dressing and only becomes active when reacting with applied hydrogen peroxide, thereby mediating between storage stability and antimicrobial potency.
Solution Approach 2:
The chemical state of the acetyl donor is changed from an inactive, stable form in the wound dressing to an active peracetic acid form through reaction with hydrogen peroxide. This parameter change enables the system to maintain stability during storage while achieving high potency when activated at the wound site.
3Stability of the object's composition
If peracetic acid is generated in situ by activating the acetyl donor with hydrogen peroxide, then the storage stability is improved, but the device complexity increases due to the need for a means of applying hydrogen peroxide
Solution Approach 1:
The peroxide component is extracted from the wound dressing itself and placed in a separate means of applying hydrogen peroxide. This extraction simplifies the wound dressing to contain only the stable acetyl donor, while the peroxide application is handled by a separate, controllable device that can be applied only when needed.
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 improves storage stability, allows for effective generation of peracetic acid at the wound site, enhances antimicrobial activity against biofilms, and promotes better wound healing by controlling reactive oxygen and nitrogen species, while being flexible in adjusting hydrogen peroxide concentration and duration.
Implementation Method 1
the acetyl donor compound of the wound dressing or other wound contact medium can be activated by the hydrogen peroxide to produce peracetic acid in situ
Implementation Method 2
Hydrogen peroxide and peracetic acid have a powerful biocidal effect on microorganisms
Data Source
AI summary
The invention relates to a wound dressing or other wound contact medium containing an acetyl donor compound, and being free from peroxide compounds which is activatable by a means of applying hydrogen peroxide. The wound dressing or other wound contact medium is suitable for use in the prevention and/or treatment of wound infection in a patient comprising applying the wound dressing or other wound contact medium to a wound of the patient, and subjecting the wound dressing or other wound contact medium to a means of applying hydrogen peroxide so that the acetyl donor compound of the wound dressing or other wound contact medium is activated by the hydrogen peroxide to produce peracetic acid.