Negative Pressure Wound Closure Device with Collapsible Stabilizing Structure
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Solution Overview
Problem
Existing negative pressure wound therapy systems require lengthy closure times for large wounds, and may not adequately reapproximate muscular and fascial tissue, leading to incomplete wound closure and potential complications such as secondary infections.
Innovation Solution
The development of negative pressure wound closure devices and systems that include a stabilizing structure configured to collapse under negative pressure, featuring a plurality of elongate strips and intervening members that pivot to allow the strips to collapse, and a porous layer with anchoring members to engage tissue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing negative pressure treatment systems are used, then wound closure is eventually achieved, but closure times are lengthy
Solution Approach 1:
The stabilizing structure is divided into multiple elongate strips that can independently collapse and pivot, allowing the structure to progressively reduce in size and facilitate faster wound closure without requiring repetitive replacement of filler material
Solution Approach 2:
The stabilizing structure incorporates movable joints between elongate strips and intervening members, enabling dynamic collapse and adaptation to the wound space, which accelerates the closure process compared to static existing systems
2Quantity of substance
If foam or wound fillers are inserted into the wound with existing systems, then the wound is filled, but atmospheric pressure compresses the foam downward and outward against the wound margins, slowing healing
Solution Approach 1:
The stabilizing structure applies counteracting force to balance atmospheric pressure compression on the wound filler, preventing the foam from being pushed against wound margins and maintaining optimal positioning for healing
Solution Approach 2:
The stabilizing structure is pre-configured with elongate strips and joints that enable it to resist compression forces before they can significantly deform the wound filler, preserving the filler's position and preventing delayed healing
3Reliability
If existing negative pressure systems are combined with tissue securement means, then some wound closure is achieved, but underlying muscular and fascial tissue may not be appropriately reapproximated, leading to incomplete closure
Solution Approach 1:
The stabilizing structure features localized anchoring regions with anchors that specifically engage with underlying muscular and fascial tissue at critical locations, ensuring proper reapproximation of deep tissue layers while maintaining overall system simplicity
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 systems facilitate faster wound closure by reducing the need for repetitive wound filler replacement, advancing the rate of healing, and ensuring complete closure of wound margins while minimizing the risk of secondary infections.
Implementation Method 1
a stabilizing structure for insertion into or over a wound, the stabilizing structure configured to collapse under negative pressure
Implementation Method 2
a porous layer with anchoring members to engage tissue
Data Source
AI summary
The present invention relates to a negative pressure wound closure system and methods for using such a system. Preferred embodiments of the invention facilitate closure of the wound by preferentially contracting to provide for movement of the tissue. Preferred embodiments can utilize tissue securing portions that aid in securing the invention within a wound.