Wound Exudate Sensing Dressing Interface

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Solution Overview

Problem

Current negative-pressure therapy systems lack efficient methods for sensing and processing wound exudate properties, such as pH, temperature, and humidity, which are crucial for effective wound healing and leakage/blockage detection.

Innovation Solution

A dressing interface with integrated sensors, including pH, temperature, and pressure sensors, that apply negative pressure and instill therapeutic solutions, providing real-time data for improved wound treatment and healing monitoring.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If multiple sensors (pH, temperature, pressure, humidity) are integrated into the dressing interface, then measurement precision and wound monitoring capability are improved, but device complexity increases

Engineering Contradiction:
Improvewound exudate property sensingVSAvoiddressing interface structure
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

Multiple sensors (pH sensor, temperature sensor, pressure sensor, humidity sensor) are integrated into a single dressing interface assembly, allowing simultaneous measurement of multiple wound exudate properties without requiring separate monitoring devices. The sensors are electrically coupled to a control device through a circuit board, enabling unified data collection and processing.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The dressing interface serves multiple functions: it applies negative pressure therapy, instills therapeutic solutions, and simultaneously monitors wound exudate properties through integrated sensors. This multi-functional design consolidates what would otherwise require separate devices into a single universal wound treatment system.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If real-time sensing of wound exudate properties is implemented, then reliability of wound healing monitoring is improved, but loss of information increases due to data processing requirements

Engineering Contradiction:
Improvewound healing monitoringVSAvoiddata processing overhead
Core Design Contradiction:
ReliabilityVSLoss of information

Solution Approach 1:

The control device receives real-time data from sensors monitoring wound exudate properties (pH, temperature, pressure, humidity) and uses this feedback to assess wound healing progression. The system can detect leakage and blockage conditions by analyzing pressure and flow data, providing continuous monitoring that improves reliability of wound care management.

Inventive Principle:
Principle #23Feedback

3Productivity

If negative pressure therapy with instillation is applied, then productivity of wound healing is improved, but device complexity increases due to fluid management requirements

Engineering Contradiction:
Improvewound healing rateVSAvoidfluid instillation system
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

Therapeutic solutions are pre-prepared and stored in a fluid source, ready for instillation into the wound bed. The system can automatically or manually deliver predetermined volumes of cleansing or therapeutic fluids through the dressing interface, eliminating the need for manual wound irrigation and ensuring consistent treatment application.

Inventive Principle:
Principle #10Preliminary action

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 accurately sensing and processing wound exudate properties, detecting leakage and blockages, and optimizing treatment protocols, leading to more effective negative-pressure therapy.

Implementation Method 1

a negative-pressure source operable to reduce pressure within the therapy cavity

Methodology Applied
Scientific EffectNegative pressure: Pressure Gradient

Implementation Method 2

a pH sensor disposed within the therapy cavity and electrically coupled to the control device through the body of the housing

Methodology Applied
Scientific EffectpH sensing:

Implementation Method 3

a temperature sensor disposed within the therapy cavity and electrically coupled to the control device

Methodology Applied
Scientific EffectTemperature sensing:

Implementation Method 4

a pressure sensor disposed within the therapy cavity and electrically coupled to the control device

Methodology Applied
Scientific EffectPressure sensing:

Data Source

PatentUS11944738B2Systems and methods for sensing properties of wound exudates
Publication Date: 2024.04.02 SOLVENTUM INTELLECTUAL PROPERTIES CO
  • US11944738B2 patent drawing
  • US11944738B2 patent drawing
  • US11944738B2 patent drawing

AI summary

Systems, apparatuses, and methods for providing negative pressure and/or instillation fluids to a tissue site. 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 includes 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 includes algorithms for processing such data for detecting leakage and blockage as well as providing information relating to the progression of healing of wounds at the tissue site.