Ostomy Sensor Assembly Detecting Moisture Propagation

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Solution Overview

Problem

Current ostomy systems lack reliable methods for determining the nature, severity, and rapidness of moisture propagation in adhesive materials, leading to potential severe leakage and skin damage without timely appliance replacement.

Innovation Solution

The development of an ostomy system with a base plate and sensor assembly that includes a first and second adhesive layer, electrodes, and a monitor interface, which detects moisture propagation patterns to provide real-time information on adhesive failure, enabling users to replace the appliance before severe leakage occurs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If no sensor assembly is integrated into the base plate, then the device complexity is reduced, but the ability to detect moisture propagation and determine adhesive failure is lost

Engineering Contradiction:
Improveability to detect adhesive failureVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The sensor assembly is merged with the base plate to form an integrated unit. The base plate includes a first adhesive layer with first electrodes, a second adhesive layer with second electrodes, and a coupling part with terminal elements, all integrated into a single structure that can be applied to the skin and connected to a monitor device.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The base plate serves multiple functions: it adheres to the skin via adhesive layers, provides electrical connections through electrodes and terminal elements, and enables moisture detection through the integrated sensor assembly. This multi-functionality reduces the need for separate components.

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

2Reliability

If terminal elements are inserted through adhesive layers, then electrical connections are established, but the adhesive layers may be damaged or compromised

Engineering Contradiction:
Improveelectrical connection reliabilityVSAvoidadhesive layer integrity
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The terminal elements are inserted through the adhesive layers during the manufacturing process before the appliance is applied to the skin. This preliminary action ensures that the adhesive layers are properly positioned and sealed around the terminal elements, maintaining their integrity while establishing electrical connections.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The terminal elements act as intermediaries that pass through the adhesive layers without compromising their sealing function. The adhesive layers are configured to seal around the terminal elements, maintaining the barrier function while allowing electrical connections to be established.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Measurement precision

If real-time moisture monitoring is implemented, then timely detection of adhesive failure is achieved, but the manufacturing process becomes more complex

Engineering Contradiction:
Improvemoisture detection accuracyVSAvoidmanufacturing ease
Core Design Contradiction:
Measurement precisionVSEase of manufacture

Solution Approach 1:

The sensor assembly is segmented into distinct functional components: first electrodes in the first adhesive layer, second electrodes in the second adhesive layer, terminal elements for electrical connections, and a coupling part for connecting to the monitor device. This segmentation allows for modular manufacturing and assembly.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The sensor assembly is designed to be self-contained within the base plate, with all necessary electrodes, connections, and sealing structures integrated into the appliance itself. The system monitors its own adhesive performance without requiring external intervention.

Inventive Principle:
Principle #25Self-service

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

This solution allows for timely replacement of the ostomy appliance, preventing severe leakage and skin damage by accurately monitoring adhesive performance and providing users with critical information on the remaining useful life of the adhesive.

Implementation Method 1

a base plate and sensor assembly that includes a first and second adhesive layer, electrodes, and a monitor interface, which detects moisture propagation patterns

Methodology Applied
Scientific EffectElectrical conductivity change: Conduction (electrical)

Data Source

PatentEP3727222B1Sensor assembly part for an ostomy appliance and a method for manufacturing a sensor assembly part
Publication Date: 2024.05.08 COLOPLAST AS
  • EP3727222B1 patent drawingFigure 1
  • EP3727222B1 patent drawingFigure 2
  • EP3727222B1 patent drawingFigure 3

AI summary

A base plate, a sensor assembly part and a method for manufacturing a base plate or a sensor assembly part is disclosed. The method comprises positioning a coupling part, the coupling part defining a terminal interface region; positioning an electrode assembly having a distal side and a proximal side, wherein the electrode assembly is positioned such that the distal side of the electrode assembly is facing the coupling part, the electrode assembly comprises a support layer and one or more electrodes provided on a proximal side of the support layer, each of the one or more electrodes comprising a connection part; and inserting one or more terminal elements through the electrode assembly.