Reduced Pressure Manifold Blockage Prevention for Deep Tissue Wounds
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Solution Overview
Problem
Existing wound-healing systems face challenges in applying reduced pressure therapy to closed, deep-tissue wounds and bone defects due to access issues and the limitations of traditional open-cell foam systems, which often require frequent replacement and can cause tissue ingrowth, leading to pain during removal.
Innovation Solution
A reduced pressure delivery system featuring a primary manifold with projections and apertures, a blockage prevention member, and a secondary manifold that prevents direct contact with the tissue site, allowing for effective application of reduced pressure to promote tissue growth and bone regeneration, including the use of cellular materials and impermeable membranes for improved access and tissue integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If open-cell foam is used as a manifold to distribute reduced pressure, then reduced pressure therapy can be applied to wound sites, but tissue grows into the foam cells causing pain during removal and requiring frequent replacement
Solution Approach 1:
The system divides the foam manifold into multiple smaller foam pieces or segments that can be individually managed. This segmentation allows for easier removal and reduces tissue ingrowth problems by limiting the size of foam structures in contact with tissue.
Solution Approach 2:
A barrier layer or interface material is introduced between the foam manifold and the tissue site. This intermediary prevents direct tissue ingrowth into the foam cells while still allowing effective reduced pressure distribution to the wound site.
2Reliability
If open-cell foam is manually shaped to fit wound sites, then reduced pressure therapy can be applied, but frequent replacement is necessary minimizing treatment efficiency
Solution Approach 1:
The foam manifold is pre-shaped or pre-formed to match common wound site geometries before application. This preliminary preparation reduces the time required for customization and installation, thereby improving treatment efficiency and reducing frequent replacements.
Solution Approach 2:
The foam manifold is designed with flexible or adaptive properties that allow it to dynamically conform to different wound shapes without requiring manual reshaping. This dynamic adaptation maintains therapeutic effectiveness while reducing replacement frequency.
3Adaptability or versatility
If reduced pressure therapy is applied to closed, deep-tissue wounds and bone defects, then previously inaccessible tissues can be treated, but access difficulties prevent effective application
Solution Approach 1:
The system introduces a delivery catheter or insertion channel that provides access to deep-tissue wounds and bone defects through a different spatial dimension or pathway. This allows the foam manifold to be delivered to previously inaccessible locations without requiring direct surgical exposure.
Solution Approach 2:
The foam manifold is nested within a delivery catheter or insertion device during application. This nested configuration allows the therapeutic agent to be delivered deep into tissue through a minimally invasive pathway, then deployed at the target site for effective treatment of closed wounds and bone defects.
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 system enables efficient promotion of tissue growth and bone regeneration by minimizing tissue ingrowth, reducing pain during foam removal, and allowing for the treatment of previously inaccessible deep-tissue wounds and bone defects, with improved access and integration of reduced pressure therapy.
Implementation Method 1
A reduced pressure delivery system features a primary manifold with projections and apertures, a blockage prevention member, and a secondary manifold that prevents direct contact with the tissue site, allowing for effective application of reduced pressure to promote tissue growth and bone regeneration
Data Source
AI summary
A reduced pressure delivery system is provided and includes a primary manifold, a blockage prevention member, and first and second conduits in fluid communication with the primary manifold. The primary manifold includes a wall surrounding a primary flow passage and is adapted to be placed in proximity to a tissue site. The blockage prevention member is positioned within the primary flow passage. A plurality of apertures is disposed in the wall to communicate with the primary flow passage. The first conduit is fluidly connected to the primary flow passage to deliver reduced pressure through the primary flow passage and the plurality of apertures. The second conduit includes an outlet proximate the primary flow passage or an outlet of the first conduit to purge the primary flow passage or first conduit to prevent blockages.