Multi-lumen Conduit Interface for Reduced-Pressure Wound Therapy
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Solution Overview
Problem
Existing reduced-pressure treatment systems for tissue sites face issues with sensing lumen occlusion due to fluid splashing and foaming, which disrupts the monitoring and control of pressure levels, and lack effective protection against liquid entry.
Innovation Solution
A reduced-pressure interface with a multi-lumen conduit that abuts a distribution manifold, ensuring the primary lumen and sensing lumens remain unblocked and protected from liquids, preventing occlusion and maintaining accurate pressure monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensing lumens are exposed to the tissue site environment for pressure monitoring, then pressure monitoring capability is improved, but the sensing lumens become susceptible to occlusion by fluid splashing and foaming
Solution Approach 1:
The distribution manifold serves as an intermediary component between the sensing lumens and the tissue site environment. The manifold's surface acts as a barrier that prevents direct contact between fluids (splashing or foaming) and the distal openings of the sensing lumens, while still allowing the sensing lumens to detect pressure changes at the tissue site. This mediator protects the sensing function from harmful fluid exposure.
2Productivity
If the multi-lumen conduit is positioned to allow fluid drainage, then fluid removal efficiency is improved, but liquid entry blocks the sensing lumens
Solution Approach 1:
The distribution manifold exhibits local quality differentiation: its surface provides a protective barrier over the sensing lumens' distal openings, while other areas of the manifold maintain fluid drainage pathways. This localized protection allows the system to simultaneously achieve efficient fluid removal through designated drainage paths while preventing liquid entry into the sensing lumens through the protected openings.
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 prevents occlusion of sensing lumens, ensuring continuous monitoring and control of reduced pressure at the tissue site, enhancing the reliability of the treatment by minimizing fluid entry and maintaining a smooth fluid flow.
Implementation Method 1
The distribution manifold contacts at least some distal apertures that open into sensing lumens in the multi-lumen conduit. The distribution manifold may thereby protect those openings from liquids entering that might block the sensing lumens.
Implementation Method 2
delivering reduced pressure from the reduced-pressure source to the reduced-pressure interface through the multi-lumen conduit
Implementation Method 3
channel fluids that are drawn from the tissue
Data Source
AI summary
Systems and methods for a reduced-pressure interface for connecting a multi-lumen conduit to a distribution manifold. The interface includes a housing having a flange portion and a cavity wall portion. The cavity wall portion forms a cavity having a tissue-facing cavity opening. The interface further includes an attachment device, a conduit port, and a multi-lumen conduit. The attachment device is coupled to a tissue-facing side of the flange portion for coupling the housing to a sealing member. The conduit includes a distal end and a proximal whereby the distal end extends through a conduit aperture and past the cavity wall portion into the cavity. The conduit further includes a primary lumen and a plurality of sensing lumens. The primary lumen and the plurality of sensing lumens extend from the proximal end of the conduit to the distal end. The conduit is adapted to contact the distribution manifold.