Wound Dressing Reduced-Pressure Interface Seal
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Solution Overview
Problem
Existing reduced-pressure wound dressing systems face challenges in maintaining a fluid seal when a subcutaneous delivery conduit is present, leading to potential leaks and disruption of the pressure differential, which compromises the effectiveness of the treatment.
Innovation Solution
A wound dressing assembly with a second reduced-pressure interface that allows the subcutaneous delivery conduit to pass through while maintaining a fluid seal, using a molded plastic component or aperture to form an interference fit and reinforce the over-drape, ensuring the pressure differential is preserved.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a subcutaneous delivery conduit is present to deliver reduced pressure to subcutaneous tissue, then reduced pressure therapy can be applied to both epidermal and subcutaneous wounds, but the fluid seal is compromised leading to leaks and disruption of pressure differential
Solution Approach 1:
The system is divided into two separate reduced-pressure interfaces: a first reduced-pressure interface for epidermal wound treatment and a second reduced-pressure interface for subcutaneous wound treatment. This segmentation allows each interface to maintain its own fluid seal integrity while enabling treatment of both epidermal and subcutaneous wounds simultaneously through the same dressing assembly.
2Ease of operation
If the over-drape is made flexible to conform to patient anatomy, then ease of application is improved, but the over-drape becomes more prone to leaking around the conduit
Solution Approach 1:
The over-drape is designed with differentiated local properties: the main body of the over-drape remains flexible to conform to patient anatomy and facilitate easy application, while the second reduced-pressure interface incorporates a rigid or semi-rigid molded component that provides structural support and maintains a reliable fluid seal around the subcutaneous delivery conduit. This local quality differentiation resolves the contradiction between flexibility for application and rigidity for sealing.
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 effectively maintains the reduced pressure at the tissue site, preventing leaks and ensuring continuous treatment even with the presence of a subcutaneous delivery conduit, enhancing the effectiveness of the reduced-pressure therapy.
Implementation Method 1
a second reduced-pressure interface coupled to the over-drape, wherein the second reduced-pressure interface is sized and configured to receive a subcutaneous delivery conduit and to form a fluid seal between the subcutaneous delivery conduit and the wound dressing assembly
Implementation Method 2
delivering reduced pressure to the reduced-pressure delivery conduit
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
Systems, methods, and dressings for treating a linear wound, such as an incision, on a patient are presented. The systems, dressings, and methods involve a sealed wound dressing assembly that helps form a fluid seal around the linear wound while simultaneously encompassing a subcutaneous delivery conduit to deliver fluid to or from a subcutaneous tissue site. In one instance, a reduced-pressure interface is used to allow the subcutaneous delivery conduit to pass through tissue at or near the linear wound and through a wound dressing assembly to a drainage receptacle.