Elastic Dressing With Undulating Edges For Scar Prevention
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Solution Overview
Problem
Current methods for treating scars and keloids are ineffective in preventing or ameliorating their formation, as they primarily focus on treating established scars rather than addressing the mechanical environment that influences scar formation.
Innovation Solution
Devices and methods that manipulate mechanical or physical properties of the skin to control stress and strain at the wound site, using elastic dressings with pre-strained configurations and packaging systems that apply and maintain strain to reduce tensile or compressive stress, thereby shielding the wound from excessive mechanical stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional scar treatment methods are used, then established scars can be treated, but they are ineffective in preventing or ameliorating scar formation
Solution Approach 1:
The patent applies preliminary action by implementing stress management and mechanical environment control during the wound healing process itself, rather than waiting for scar formation to complete. The dressing system is applied immediately after injury and maintains controlled stress conditions throughout the proliferative and remodeling stages, preventing hypertrophic scarring before it develops. This shifts the intervention timing from post-scar treatment to proactive prevention during the critical healing window.
2Stability of the object's composition
If mechanical stress is increased to stimulate tissue remodeling, then scar tissue organization improves, but excessive stress causes hypertrophic scarring
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting mechanical stress parameters throughout the wound healing process. The dressing system transitions from providing higher compressive stress during the early proliferative stage to gradually reducing stress during the remodeling stage. This time-dependent parameter adjustment optimizes tissue organization while preventing the excessive stress that causes hypertrophic scarring, matching the mechanical needs of different healing phases.
Solution Approach 2:
The patent applies periodic action through staged stress modulation during wound healing. The dressing system implements different stress levels at different time periods: initial compression to control edema and align collagen fibers, followed by gradual stress reduction to allow mature scar formation. This periodic stress protocol promotes organized tissue remodeling while avoiding the sustained high stress that leads to hypertrophic scarring.
3Ease of operation
If dressings with straight edges are used, then application is simple, but peak tensile stresses concentrate at the edges causing wound dehiscence
Solution Approach 1:
The patent applies spheroidality by replacing straight edges with curved, undulating edge geometries on the dressing. These curved edges eliminate sharp corners where stress would concentrate, distributing tensile forces more uniformly along the dressing perimeter. The undulating pattern creates a progressive stress transition zone that reduces peak stresses at the skin-dressing interface, preventing edge-related wound dehiscence while maintaining straightforward application procedures.
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
These solutions effectively reduce the formation of scars and keloids by controlling the mechanical environment around the wound, preventing excessive scarring by managing stress and strain, and providing a sterile, easy-to-apply dressing solution.
Implementation Method 1
an elastic sheet with a planar skin interfacing surface, a first undulating edge, and a second undulating edge farthest and opposite from the first edge
Implementation Method 2
the undulating edges are configured to reduce localized tensile stresses at one or more locations along the first undulating edge and the second undulating edge
Data Source
AI summary
Devices, kits and methods described herein are provided for treatment to skin, including but not limited to wound healing, the treatment, amelioration, and/or prevention of scars or keloids. A book-like packaging, applicator and/or tensioning device can be used to apply a dressing to a subject. The packaging, applicator and/or tensioning device applies and/or maintain a strain in an elastic dressing, and include undulating edge configurations to reduce peak stresses applied to the skin compared to traditional dressing shapes.