Gradient Permeability Sealing Ring for Linear Wound Therapy
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Solution Overview
Problem
Current reduced pressure wound therapy systems face challenges in effectively distributing pressure and managing fluid across tissue sites, particularly in linear wounds, leading to potential skin irritation and discomfort, and issues with maintaining a consistent fluid seal.
Innovation Solution
A reduced-pressure treatment system comprising a dressing assembly with a porous bolster, a comfort layer, and a sealing member, which includes a sealing ring to enhance fluid management and patient comfort, along with a reduced-pressure subsystem for delivering controlled pressure to the wound site, ensuring adequate pressure distribution and fluid absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a porous pad is used to distribute reduced pressure and channel fluids, then fluid management is improved, but skin irritation and discomfort may occur
Solution Approach 1:
The sealing member is divided into a distal portion and a proximal portion with different properties. The distal portion has higher permeability for fluid management, while the proximal portion has lower permeability to protect skin comfort. This segmentation allows each part to perform its specific function optimally without causing harm.
Solution Approach 2:
Different regions of the sealing member have different permeability characteristics tailored to their specific functions. The distal portion (near wound) has high permeability for fluid removal, while the proximal portion (near skin) has low permeability to prevent skin irritation. This local differentiation resolves the contradiction between fluid management and skin protection.
2Productivity
If reduced pressure is applied through a porous pad, then tissue growth is accelerated, but maintaining consistent fluid seal becomes difficult
Solution Approach 1:
The sealing member transitions from a static, uniform structure to a dynamic, gradient structure where permeability varies continuously from distal to proximal portions. This dynamic design allows the system to adapt to different fluid flow conditions while maintaining seal integrity, resolving the contradiction between promoting tissue growth and ensuring reliable sealing.
Solution Approach 2:
The permeability parameter of the sealing member is changed across its length, creating a gradient from high permeability at the distal end to low permeability at the proximal end. This parameter variation allows the system to maintain consistent fluid seal while still enabling effective fluid management for accelerated tissue growth.
3Quantity of substance
If a sealing member is used to maintain fluid seal, then fluid management is improved, but patient comfort may be compromised
Solution Approach 1:
The sealing member is segmented into functional zones: a distal portion for fluid seal maintenance and a proximal portion for patient comfort. This segmentation allows the system to achieve both fluid seal integrity and patient comfort by assigning different permeability characteristics to different segments.
Solution Approach 2:
The proximal portion of the sealing member has modified local quality with lower permeability and different material properties specifically designed to enhance patient comfort, while the distal portion maintains high permeability for fluid seal. This local quality differentiation resolves the contradiction between fluid seal and comfort.
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 accelerates tissue growth, reduces healing time, and minimizes skin irritation by providing consistent reduced pressure and fluid management, enhancing the overall effectiveness of wound therapy.
Implementation Method 1
providing a reduced pressure in proximity to a tissue site augments and accelerates the growth of new tissue at the tissue site
Implementation Method 2
The porous pad distributes reduced pressure to the tissue and channels fluids that are drawn from the tissue
Implementation Method 3
an absorbent layer in fluid communication with the interface layer to absorb liquid from at least one of the interface layer and the tissue site
Data Source
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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 include a sealing ring that helps form a fluid seal around the linear wound. In one instance, a sealing material is extruded around the linear wound to help form a seal. In another instance, a sealing ring is coupled to a lower portion of a dressing bolster to form a seal. Other systems, methods, and apparatuses are disclosed.