Wound Dressing pH Sensor Integration for Real-Time Monitoring
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Solution Overview
Problem
Current negative-pressure therapy systems lack efficient monitoring and treatment capabilities, particularly in providing real-time data on pH, humidity, and temperature at tissue sites, which can impede effective wound healing and treatment outcomes.
Innovation Solution
A dressing system equipped with integrated sensors, including pH, humidity, and temperature sensors, that communicate with a microprocessor to provide real-time data and control negative-pressure therapy, allowing for precise monitoring and treatment of tissue sites.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If negative-pressure therapy is applied to treat wounds, then tissue growth and healing are accelerated, but real-time monitoring of pH, humidity, and temperature at the tissue site is insufficient
Solution Approach 1:
The patent implements feedback by integrating pH sensors, humidity sensors, and temperature sensors within the dressing system. These sensors continuously monitor tissue site conditions and provide real-time data to a microprocessor, enabling closed-loop control that adjusts negative pressure based on actual wound bed conditions, thereby resolving the information loss problem while maintaining effective wound healing
Solution Approach 2:
The patent uses an intermediary approach by placing a multi-functional dressing between the negative pressure source and the tissue site. This dressing incorporates sensors that act as intermediaries to detect and transmit physiological data (pH, humidity, temperature) from the wound bed to the control system, enabling indirect real-time monitoring without direct exposure to the tissue site
2Loss of information
If multiple sensors are integrated into the dressing to monitor pH, humidity, and temperature, then real-time data availability improves, but device complexity increases
Solution Approach 1:
The patent applies merging by combining multiple sensors (pH, humidity, temperature) and the negative pressure delivery system into a single integrated dressing unit. All sensor elements and control components are merged within one cohesive structure that interfaces with the tissue site through a unified application process, reducing operational complexity despite increased functional integration
Solution Approach 2:
The patent implements universality by designing the dressing to perform multiple functions simultaneously: delivering negative pressure therapy, monitoring pH levels, measuring humidity, tracking temperature, and controlling instillation. This multi-functional design consolidates what would otherwise require separate devices into a single universal platform, managing complexity through functional integration
3Measurement precision
If pH sensors are positioned between the dressing and tissue site for direct measurement, then measurement precision improves, but the risk of sensor contamination and malfunction increases
Solution Approach 1:
The patent uses an intermediary approach by positioning the pH sensor between the dressing and tissue site rather than in direct contact with wound exudate. This intermediate placement allows the sensor to detect pH levels through the dressing material, maintaining measurement precision while protecting the sensor from direct contamination by infectious or corrosive wound fluids
Solution Approach 2:
The patent applies self-service by designing the pH sensor with inherent protection mechanisms that allow it to function autonomously in the harsh wound environment. The sensor structure includes protective features that enable it to self-protect from contamination while maintaining its measurement capability, reducing the need for external protection or frequent replacement
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 wound healing by providing accurate, real-time data for improved treatment protocols, reducing healing times and improving tissue growth through optimized negative-pressure therapy.
Implementation Method 1
The first pH sensor is configured to detect a pH level of fluid present at the tissue site and to provide a pH output to the microprocessor based on the pH level detected
Implementation Method 2
a port adapted to be fluidly coupled to a negative-pressure source
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
Systems, apparatuses, and methods for providing negative pressure and/or instillation fluids to a tissue site are disclosed. Some embodiments are illustrative of an apparatus or system for delivering negative-pressure and/or therapeutic solution of fluids to a tissue site, which can be used in conjunction with sensing properties of fluids extracted from a tissue site and/or instilled at a tissue site. For example, an apparatus may comprise a dressing interface or connector that includes a pH sensor, a humidity sensor, a temperature sensor and/or a pressure sensor embodied on a single pad within the connector and proximate the tissue site to provide data indicative of acidity, humidity, temperature and pressure. Such apparatus may further comprise an ambient port for providing the pressure sensor and the humidity sensor with access to the ambient environment providing readings relative to the atmospheric pressure and humidity.