Ostomy Base Plate Monitoring for Adhesive Wear-Time Prediction

Solution Overview

Problem

Existing ostomy appliances often fail prematurely due to improper timing of replacement, leading to skin damage, leakage, and increased costs, as users lack effective methods to monitor the adhesive's condition and stoma health.

Innovation Solution

An ostomy system with a base plate equipped with electrodes and sensors that monitor adhesive properties and stoma health, using a monitor device to provide data on the appliance's operating state, allowing for timely replacement and reducing skin damage and leakage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the base plate is designed to be impermeable to bodily fluid to maintain adhesive performance, then adhesive reliability is improved, but skin irritation and maceration worsen due to fluid accumulation against the skin

Engineering Contradiction:

Improveadhesive performanceVSAvoidskin irritation and maceration

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The base plate is divided into two functional zones: an inner impermeable region that prevents fluid penetration to maintain adhesive strength, and an outer permeable region that allows fluid to pass through to prevent skin maceration. This segmentation resolves the contradiction by allowing each zone to perform its specific function without interfering with the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the base plate are assigned different permeability properties: the central area beneath the ostomy appliance is made impermeable to protect adhesive performance, while the peripheral areas are made permeable to protect skin health. This local differentiation of material properties allows the base plate to simultaneously satisfy both adhesive reliability and skin protection requirements.

Inventive Principle:

Principle #3Local quality

2Object-affected harmful factors

If the base plate is made permeable to allow fluid passage to prevent skin maceration, then skin health is improved, but adhesive performance deteriorates due to fluid reaching the adhesive layer

Engineering Contradiction:

Improveskin macerationVSAvoidadhesive performance

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The base plate is divided into two functional zones: an inner impermeable region that prevents fluid penetration to maintain adhesive strength, and an outer permeable region that allows fluid to pass through to prevent skin maceration. This segmentation resolves the contradiction by allowing each zone to perform its specific function without interfering with the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the base plate are assigned different permeability properties: the central area beneath the ostomy appliance is made impermeable to protect adhesive performance, while the peripheral areas are made permeable to protect skin health. This local differentiation of material properties allows the base plate to simultaneously satisfy both adhesive reliability and skin protection requirements.

Inventive Principle:

Principle #3Local quality

3Object-affected harmful factors

If a barrier layer is added between the skin and base plate to prevent fluid accumulation, then skin protection is improved, but adhesive bonding between the base plate and skin worsens

Engineering Contradiction:

Improvefluid accumulationVSAvoidadhesive bonding

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The base plate is divided into two functional zones: an inner impermeable region that prevents fluid penetration to maintain adhesive strength, and an outer permeable region that allows fluid to pass through to prevent skin maceration. This segmentation resolves the contradiction by allowing each zone to perform its specific function without interfering with the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the base plate are assigned different permeability properties: the central area beneath the ostomy appliance is made impermeable to protect adhesive performance, while the peripheral areas are made permeable to protect skin health. This local differentiation of material properties allows the base plate to simultaneously satisfy both adhesive reliability and skin protection requirements.

Inventive Principle:

Principle #3Local quality

Data Source

PatentEP4470512B1Ostomy systems

Publication Date: 2026.05.13 COLOPLAST AS

Figure 1
Figure 2
Figure 3

AI summary

The present disclosure provides a method, performed by an accessory device (i.e. an accessory device of an ostomy system disclosed herein), for monitoring an ostomy system. The accessory device comprises an interface configured to communicate with one or more devices of the ostomy system, the interface comprising a display. The accessory device is configured to communicate with an ostomy system as disclosed herein. The ostomy system comprises a monitor device, and/or an ostomy appliance configured to be placed on a skin surface of a user. The ostomy appliance comprises a base plate. The method comprises: obtaining monitor data from the one or more devices, obtaining context data, determining one or more future operating states of the ostomy appliance based on the monitor data and the context data, wherein a future operating state is indicative of future adhesive performance of the ostomy appliance, and communicating the one or more future operating states.