Wound Dressing Pressure Sensing With Isolated Therapy and Sensing Paths
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Solution Overview
Problem
Existing negative-pressure therapy systems lack effective methods for sensing pressure at a tissue interface or surface, which can impact the efficacy of wound healing and tissue growth.
Innovation Solution
The development of dressings and systems that include a cover, tissue interface, dressing interface, and sensing conduit, with integrated fluid and sensing pathways, allowing for the measurement of pressure and fluid management during negative-pressure therapy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If negative-pressure therapy is applied to promote tissue growth and wound healing, then therapeutic benefit is improved, but ability to monitor and control pressure at tissue interface is insufficient
Solution Approach 1:
A sensing conduit is introduced as an intermediary element that extends from the pressure sensor to the tissue contact surface. This conduit allows pressure measurements to be taken directly at the tissue interface without interfering with the negative-pressure therapy application, thereby enabling precise monitoring while maintaining therapeutic effectiveness.
Solution Approach 2:
The patent replaces indirect mechanical pressure measurement methods with a dedicated sensing conduit system that provides direct pressure sensing at the tissue interface. This substitution enables more accurate and reliable pressure monitoring compared to traditional mechanical gauge methods.
2Measurement precision
If a sensing conduit is added to measure pressure at tissue contact surface, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The sensing conduit is integrated with the existing dressing components, merging the sensing function with the tissue interface structure. The conduit is positioned to extend from the pressure sensor through the dressing layers to the tissue contact surface, combining multiple functions (sensing, fluid management, and structural support) into a unified system.
Solution Approach 2:
The sensing conduit serves multiple functions: it provides pressure sensing at the tissue interface, maintains fluid pathways for negative-pressure therapy, and integrates with the dressing structure. This multi-functionality reduces the need for separate components, thereby limiting the increase in overall device complexity.
3Device complexity
If fluid pathway and sensing pathway are integrated in the same housing, then device complexity is reduced, but fluid isolation between pathways is compromised
Solution Approach 1:
The housing is segmented into distinct fluid pathway and sensing pathway channels. Although both pathways are contained within the same housing structure, they are physically separated into independent channels that prevent fluid cross-contamination. This segmentation allows integrated housing design while maintaining reliable fluid isolation.
Solution Approach 2:
The housing structure acts as an intermediary that provides both pathways while maintaining isolation. The housing includes separate sealed channels for fluid flow and sensing, with the housing walls serving as the isolating barrier between the two pathways, thereby enabling integration without compromising fluid isolation.
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
Enhances the effectiveness of negative-pressure therapy by providing real-time pressure sensing and fluid management, promoting tissue growth and wound healing through improved pressure control and fluid removal.
Implementation Method 1
The sensing conduit can be configured to be coupled between the sensing inlet port and the tissue contact surface of the tissue interface
Implementation Method 2
The cover can be configured to create a seal at the tissue site
Implementation Method 3
reducing pressure in proximity to a tissue site can augment and accelerate growth of new tissue at the tissue site
Data Source
AI summary
A dressing configured to be positioned adjacent to a tissue site can include a cover, a tissue interface, a dressing interface, and a sensing conduit. The dressing interface can be configured to be coupled to the cover and can include a housing, a fluid pathway, and a sensing pathway. The fluid pathway can extend internally through the housing between a fluid inlet cavity and a fluid outlet port. The sensing pathway can extend internally through the housing between a sensing inlet port and a sensing outlet port with the sensing pathway being fluidly isolated from the fluid pathway. The sensing conduit can be configured to be coupled between the sensing inlet port and a tissue contact surface of the tissue interface. Also disclosed are systems, apparatuses, and methods suitable for use with various example dressings.