Spacer-Fabric Wick Bridge for Comfortable Negative Pressure Wound Therapy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing negative pressure wound therapy (NPWT) systems face discomfort due to rigid fluid ports that press into the wound, particularly on areas like the back or heel, causing irritation and pressure points.
Innovation Solution
A method and apparatus using an elongate wick with a three-dimensional spacer fabric, covered by a flexible wick cover, to bridge the wound dressing to a remote fluid port, minimizing skin contact and providing a fluid-tight seal, allowing for a more comfortable and effective fluid transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid fluid port is used to provide fluid communication between the wound and vacuum source, then fluid connection stability is improved, but patient comfort deteriorates due to pressure points on the wound
Solution Approach 1:
The rigid fluid port structure is extracted from the wound area and relocated to a remote position on the patient's body. The patent separates the fluid connection function from the wound contact area, allowing the vacuum source connection to be positioned away from pressure points while maintaining reliable fluid communication through flexible tubing.
Solution Approach 2:
A flexible conduit or tubing acts as an intermediary element between the wound area and the remote fluid port. This intermediary component transmits fluid while accommodating patient movement and positioning, eliminating the need for rigid structures at the wound site.
2Object-affected harmful factors
If the fluid port is positioned remotely from the wound, then patient comfort is improved, but fluid transport efficiency may worsen due to increased distance
Solution Approach 1:
The patent employs flexible tubing or conduits that can be routed efficiently between the wound and remote fluid port. These flexible components maintain adequate fluid flow by conforming to body contours and minimizing resistance, despite the increased distance.
3Object-affected harmful factors
If a flexible wick cover is used to bridge the wound to remote location, then patient comfort is improved, but seal reliability may worsen
Solution Approach 1:
The wick cover is constructed from flexible, conformable material that adapts to the patient's body contours and wound geometry. This flexibility allows the cover to maintain intimate contact with irregular surfaces while preserving fluid-tight sealing through capillary action and surface adhesion.
Solution Approach 2:
The wick cover incorporates porous or capillary-wicking material that draws fluid through its structure while maintaining contact with the skin and wound surface. The porous structure provides both flexibility for comfort and sufficient adhesion for sealing reliability.
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 enables comfortable and efficient fluid transport from the wound to a remote location, reducing patient discomfort and maintaining negative pressure therapy efficacy.
Implementation Method 1
an elongate wick (104) including a three-dimensional spacer fabric
Data Source
Figure 1A~1C
Figure 2A~2B
Figure 3
AI summary
A method of bridging from a wound dressing to a wound port for negative pressure wound therapy includes posi-tioning an elongate wick between a wound and a remote location with respect to the wound. The elongate wick includes a three-dimensional spacer fabric having an upper fabric layer spaced from a lower fabric layer by an intermediate layer of pile threads. The elongate wick is covered with a flexible wick cover such that an enclosure is formed around the elongate wick. A substantially fluid-tight seal is established between a first end of the elongate wick cover and the wound dressing such that a reservoir is de-fined over the wound in which a negative pressure may be maintained. A substantially fluid-tight seal is established between a sec-ond end of the elongate wick cover and a fluid port configured for connection to a source of negative pressure.