Vacuum Tube Patch for Wound Dressing Seal Integrity
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Solution Overview
Problem
Existing vacuum-assisted wound therapy devices face issues with maintaining an air-tight seal due to adhesive failures around vacuum tubes, which can lead to breaches and compromise the effectiveness of wound drainage and healing.
Innovation Solution
A patch-based attachment system for vacuum tubes that can be adhered to the outer surface of wound covers, allowing the tube to be positioned near openings for secure vacuum communication, with features like circumferential flanges and transparent films for monitoring and medication delivery, enabling flexible placement and reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive is applied around the vacuum tube to maintain air-tight seal, then the seal is initially effective, but the adhesive is vulnerable to cracking and breaching the air-tight seal
Solution Approach 1:
The invention extracts the vacuum tube from beneath the wound cover and relocates it to the exterior surface. The tube passes through a hole in the cover and is secured by a collar that interfaces with the exterior surface, eliminating the need for adhesive application around the tube and thereby removing the vulnerability to adhesive cracking.
Solution Approach 2:
The collar acts as an intermediary component between the vacuum tube and the wound cover. It provides a mechanical interface that secures the tube to the exterior surface of the cover, replacing the adhesive's sealing function with a structural attachment mechanism that is not susceptible to cracking.
2Reliability
If the vacuum tube is run under the edge of the wound cover, then the seal is maintained, but the tube attachment becomes vulnerable to seal breaches
Solution Approach 1:
The vacuum tube is extracted from the subsurface configuration and repositioned to the exterior surface of the wound cover. This relocation allows the tube to be secured by the collar at a location that does not compromise the seal, while providing easier access for connection and more secure mechanical attachment.
3Device complexity
If the tube attachment is made as an integral part of the wound cover, then the structure is simplified, but the wound packing materials cannot be optimized for tissue growth
Solution Approach 1:
The invention segments the tube attachment function from the wound cover body by introducing a separate collar component. This allows the wound cover to be optimized for tissue growth with appropriate packing materials, while the collar provides the specialized function of securing the vacuum tube to the exterior surface.
Solution Approach 2:
The collar serves as an intermediary component that provides the tube attachment function without being integrated into the wound cover structure. This separation allows each component to be independently optimized - the cover for tissue growth and the collar for secure tube attachment.
4Reliability
If adhesive is used to seal the vacuum tube, then initial sealing is achieved, but the seal is vulnerable to cracking under vacuum pressure
Solution Approach 1:
The vacuum tube is extracted from the adhesive-dependent configuration and repositioned to the exterior surface where it is secured by the collar. This eliminates the adhesive's exposure to vacuum pressure and removes the vulnerability to pressure-induced cracking.
Solution Approach 2:
The collar acts as an intermediary that bears the vacuum pressure loads rather than the adhesive. The collar's rigid structure is designed to withstand the vacuum pressure, transferring the stress away from any adhesive interfaces and preventing pressure-induced failure.
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 patch-based system provides a secure, air-tight seal that enhances wound healing by maintaining vacuum integrity and allowing for flexible placement and reuse, reducing the risk of infection and dressing changes while promoting tissue growth.
Implementation Method 1
The patch has an adhesive area around its perimeter for attaching the patch in a substantially air-tight seal to the wound cover
Implementation Method 2
The vacuum can be used to suction wound exudate and other liquids from the wound and wound packing materials
Implementation Method 3
The vacuum can be used to suction wound exudate and other liquids from the wound and wound packing materials
Data Source
AI summary
The invention provides a vacuum tube attachment device for vacuum assisted wound dressings. The device is in the form of a patch that can be attached to the primary wound cover. The patch forms a substantially air-tight seal to the primary wound cover, and a vacuum tube is fixed to the patch such that the patch can be oriented on the wound cover to locate the tube near an opening in the cover to allow vacuum pressure to be communicated to the wound. The patch has an adhesive area around its perimeter for attaching the patch in a substantially air-tight seal to the wound cover at any convenient location on the cover. Several embodiments of the patch are described.