Reduced Pressure Manifold with Periodic Purging for Deep Tissue Therapy
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Solution Overview
Problem
Current reduced pressure therapy systems are limited in treating closed, deep-tissue wounds and bone defects due to access issues and lack of advanced technologies beyond manual shaping of open-cell foam, which can cause tissue ingrowth and pain during removal.
Innovation Solution
A reduced pressure delivery system featuring a flexible barrier with projections creating flow channels, a manifold delivery tube for percutaneous insertion, and a cellular material or scaffold for promoting tissue growth, allowing for the application of reduced pressure to bone and other tissues without the need for surgical exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If open-cell foam is used as a manifold for reduced pressure therapy, then reduced pressure can be distributed to the wound site, but tissue grows into the foam cells causing pain during removal and requiring frequent replacement
Solution Approach 1:
The patent uses open-cell foam as a manifold material that allows reduced pressure distribution while maintaining structural integrity. The foam's porous structure enables fluid permeability for therapy delivery while the patent addresses tissue in-growth through periodic purging cycles that remove accumulated tissue without requiring complete foam replacement.
Solution Approach 2:
The patent implements periodic purging cycles where reduced pressure is temporarily discontinued and the foam manifold is flushed with saline or other fluids to remove accumulated tissue. This periodic maintenance allows the foam to remain in place for extended periods without causing patient pain or requiring frequent replacement.
2Adaptability or versatility
If manually shaped open-cell foam is used, then the foam can be customized to fit the wound, but the device complexity remains high and advanced tissue treatment capabilities are limited
Solution Approach 1:
The patent describes manifolds with varying pore sizes, densities, and material compositions that can be selected based on wound characteristics and treatment goals. These parameter variations allow customization for different wound types and depths without requiring manual shaping, reducing device complexity while maintaining adaptability.
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 to these tissues is difficult without surgical exposure
Solution Approach 1:
The patent uses a manifold system that can be delivered percutaneously or through minimally invasive approaches to reach deep tissues and bone defects. The manifold acts as an intermediary structure that distributes reduced pressure throughout the target tissue volume without requiring surgical exposure, enabling treatment of previously inaccessible areas through needle-like delivery catheters or percutaneous insertion.
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 effectively promotes tissue growth and healing by reducing pain and frequency of foam replacement, enabling treatment of previously inaccessible deep-tissue wounds and bone defects with improved efficacy and patient comfort.
Implementation Method 1
A reduced pressure is applied through the manifold to the tissue site
Implementation Method 2
The manifold delivery tube is used to deliver a reduced pressure apparatus percutaneously to a tissue site
Data Source
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Figure 5
AI summary
A reduced pressure delivery system for applying a reduced pressure to a tissue site is provided. The system includes a manifold having a plurality of flow channels. The manifold is configured to be placed adjacent the tissue site. A first conduit is in fluid communication with the flow channels of the manifold to deliver a reduced pressure to the flow channels. A second conduit is in fluid communication with the flow channels of the manifold and is operably connected to a valve. The valve selectively purges the second conduit with ambient air when the valve is positioned in an open position, and a controller is operably connected to the valve to place the valve in the open position for a selected amount of time at a selected interval during delivery of reduced pressure through the first conduit.