Sensor-Integrated Wound Dressing With Perforated Flexible Coatings

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Solution Overview

Problem

Existing medical treatments lack real-time sensor data collection for tissue monitoring, particularly in wound care, orthopedic treatments, and internal tissue repair, relying on visual inspection which may obscure underlying tissue damage.

Innovation Solution

Integration of sensor-enabled substrates with flexible coatings and perforations to support electronic components, allowing for real-time data collection and transmission of tissue parameters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If visual inspection is used for wound monitoring, then the treatment process remains simple, but real-time data collection and tissue monitoring accuracy are insufficient

Engineering Contradiction:

Improvetissue monitoring accuracyVSAvoiddressing structure complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent combines multiple functions (sensor integration, data collection, wireless communication, and wound dressing) into a single integrated system. The flexible substrate integrates electronic components, sensors, and coating layers to create a unified dressing that performs both wound care and real-time monitoring, resolving the contradiction between measurement precision and device complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent uses a flexible substrate with thin coating layers to create a dressing that conforms to the wound area while housing electronic components. This flexible film structure enables real-time monitoring without excessive complexity, as the thin-film design allows for integration of sensors and electronics while maintaining dress simplicity.

Inventive Principle:

Principle #30Flexible shells and thin films

2Reliability

If a flexible substrate with electronic components is used, then real-time data collection is enabled, but the substrate requires protective coatings to prevent fluid ingress

Engineering Contradiction:

Improveelectronic component protectionVSAvoidcoating layer structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent employs a porous coating layer that allows fluid penetration to reach absorbent material while preventing direct fluid ingress to electronic components. The porous structure provides selective permeability, protecting electronics from wound fluids while maintaining the necessary protective function without requiring complex multi-layer barriers.

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The coating layers act as intermediary barriers between the electronic components and the wound environment. The first coating provides initial protection while the second porous coating allows controlled fluid interaction, creating a graduated protection system that safeguards electronics while enabling necessary wound interaction through the absorbent material.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of operation

If perforations are created in the substrate for fluid passage, then wound exudate can be managed, but the coating layers may block the perforations

Engineering Contradiction:

Improvefluid passage capabilityVSAvoidperforation patency

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent creates perforations through the substrate before applying the coating layers, ensuring that the perforation pathways are established prior to coating deposition. This preliminary action prevents the coating material from blocking the fluid passage routes, as the perforations are formed first and the coating is then applied around them.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The coating layers are applied with different properties at different locations: the first coating provides protection over electronic components, while the second porous coating is applied to allow fluid passage through the perforations. This localized differentiation of coating properties ensures that perforations remain patent while providing necessary protection in other areas.

Inventive Principle:

Principle #3Local quality

4Reliability

If multiple coating layers are applied to protect electronics, then component protection is improved, but the manufacturing process becomes more complex

Engineering Contradiction:

Improveelectronic component protectionVSAvoidcoating application process

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent divides the protective coating system into two distinct layers with different functions: a first coating for general protection and a second porous coating for selective fluid interaction. This segmentation allows each layer to be optimized for its specific function and simplifies the manufacturing process by breaking down the complex protection requirement into manageable, sequential coating steps.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12527522B2Sensor integrated dressings and systems

Publication Date: 2026.01.20 SMITH & NEPHEW PLC

AI summary

In some cases, a wound dressing comprises a substantially flexible substrate with a first, wound-facing side supporting a plurality of electronic components and a second side opposite the first side, wherein the substrate comprises a plurality of perforations formed though the substrate and wherein the plurality of perforations comprise walls on the exterior surface of the plurality of perforations, a first substantially stretchable coating applied to the first side of the substrate, and a second substantially stretchable coating applied to second side of the substrate, wherein the walls of the plurality of perforations are at least partially coated with at least one of the coatings.