Vacuum Assisted Wound Dressing for Portable Negative Pressure Therapy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing topical negative pressure (TNP) therapies are not suitable for managing small to medium-sized wounds due to their large size, weight, and inability to maintain portability, as they require remote fluid collection and are not effective for wounds with low exudate volumes.
Innovation Solution
A portable TNP apparatus that uses a wound contacting element to retain exudate fluid and prevent its transport beyond the element, even under negative pressures up to 250 mmHg, combined with a lightweight vacuum source and a simple coupling mechanism for easy use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional TNP therapy with remote fluid collection is used, then wound exudate can be effectively removed, but the device becomes large, heavy, and impractical for small to medium-sized wounds
Solution Approach 1:
The invention extracts the fluid collection function from the traditional TNP system by using the absorbent wound dressing itself as the collection medium, eliminating the need for separate remote collection receptacles and reducing device complexity and weight
Solution Approach 2:
The invention combines the wound filler and fluid collection functions into a single integrated absorbent wound dressing, merging multiple components into one unit that performs both wound filling and exudate management
2Reliability
If traditional TNP apparatus with fluid transfer lumen is used, then exudate can be aspirated from wound, but the system becomes complex and difficult to operate
Solution Approach 1:
The invention removes the complex fluid transfer lumen and remote collection system from the TNP apparatus, replacing them with a simple absorbent dressing that passively manages exudate through absorption rather than active aspiration
Solution Approach 2:
The absorbent wound dressing automatically manages exudate through its inherent absorption properties without requiring complex active aspiration systems, making the device self-regulating and easier to operate
3Quantity of substance
If absorbent filler is used in TNP wound cavity, then exudate can be absorbed locally, but fluid transport to drainage tube is hindered
Solution Approach 1:
The invention changes the physical state and properties of the absorbent filler material to optimize both absorption capacity and fluid transport characteristics, using materials that maintain appropriate porosity and permeability under negative pressure conditions
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 apparatus effectively manages small to medium-sized wounds by maintaining wound fluid locally, enhancing portability and usability, and allowing for convenient application and removal of the vacuum source without compromising wound protection.
Implementation Method 1
a wound contacting element for retaining wound exudate fluid therein
Implementation Method 2
The mode of action of the apparatus is the application of negative pressure to the wound cavity, causing compression of the wound cavity filler
Data Source
AI summary
Apparatus for the application of topical negative pressure therapy to a wound site is described, the apparatus comprising: a wound contacting element for retaining wound exudate fluid therein; a wound covering element that provides a substantially airtight seal over the wound contacting element and wound site; a vacuum connection tube connecting a wound cavity to a vacuum source; and a vacuum source connected to a distal end of the vacuum connection tube.