Wound Separator Diverting Enteric Fluids for VAC Healing
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Solution Overview
Problem
Current wound management systems, particularly for fistulas, are inefficient in diverting enteric substances away from the wound bed, leading to wound breakdown and increased healthcare costs due to frequent dressing changes and infection risks.
Innovation Solution
A wound separator with a size-matched design and leak-resistant sealant is used to divert enteric substances from the wound bed into an ostomy appliance, combined with a VAC device for vacuum-assisted wound healing, allowing extended dressing change intervals and reducing patient discomfort and infection risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional porous absorbent dressings are used to accumulate body fluids, then drainage and collection of fluids is facilitated, but the dressings require frequent changing to reduce infection risks and maintain effectiveness, increasing treatment costs and patient discomfort
Solution Approach 1:
The system divides the wound management function into separate components: a vacuum drainage system for active fluid removal and an ostomy appliance for fistula output collection. This segmentation allows each component to be optimized for its specific function and enables extended wear periods without frequent changes.
Solution Approach 2:
The patent replaces passive mechanical absorbent dressings with an active vacuum drainage system that uses negative pressure to actively remove fluids. This mechanical substitution eliminates the need for frequent manual dressings and reduces infection risks associated with repeated skin exposure.
2Productivity
If VAC devices are used to promote wound healing, then wound bed drainage is improved, but the sponge clogs quickly with thick stool from fistulas, causing pooling and further wound breakdown
Solution Approach 1:
The system separates the wound bed drainage function (performed by the VAC sponge) from the fistula output collection function (performed by the ostomy appliance). This segmentation prevents the sponge from contacting thick stool while maintaining effective wound drainage.
Solution Approach 2:
The ostomy appliance acts as an intermediary component between the fistula output and the wound bed. It collects and contains fistula stool while allowing the VAC sponge to continue draining the wound bed effectively without contamination.
3Reliability
If current wound management procedures are used, then near-constant hospital attention is required to ensure healing, but this increases healthcare costs and reduces patient quality of life
Solution Approach 1:
The system enables self-drainage through the vacuum mechanism and self-collection through the ostomy appliance, eliminating the need for constant manual intervention. Patients can manage their own wound care at home with minimal hospital visits.
Solution Approach 2:
The vacuum drainage system operates continuously to maintain wound bed cleanliness, and the ostomy appliance continuously collects fistula output. This continuous action eliminates the need for frequent dressing changes and hospital visits, reducing overall management complexity.
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 solution promotes wound healing by preventing enteric substance contact with the wound bed, reducing infection incidence, and enabling patients to be discharged from hospitals, thereby decreasing healthcare costs and improving patient compliance with treatment regimens.
Implementation Method 1
vacuum-assisted closure, or 'VAC®' devices. VAC® technology consists of an airtight dressing that provides drainage to the wound bed under a vacuum.
Implementation Method 2
A wound separator with a size-matched design and leak-resistant sealant is used to divert enteric substances from the wound bed
Data Source
AI summary
A wound treatment system includes a sponge including a first surface adapted to confront a wound bed of a patient, a drape in contact with a second surface of the sponge, and a vacuum source for distributing a vacuum force through the sponge. The system also includes a wound separator having a sidewall defining an interior chamber, wherein at least a portion of an exterior of the sidewall confronts at least an interior portion of the sponge. An ostomy appliance is operatively connected to the wound separator to receive substances passing out of the wound separator.