Ostomy Interface Locking Flange to Prevent Leakage and Skin Irritation

Solution Overview

Problem

Existing ostomy bag attachment methods using adhesives cause skin irritation and leakage due to loss of adherence, exposing the terminal end of the bowel and compromising patient comfort and dignity.

Innovation Solution

An enterostomy interface with an annular upper flange and securement interface that lockingly mate, using a resilient mechanical detent system to secure the ostomy bag without adhesives, ensuring the interface remains in place and prevents leakage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If adhesive-based attachment methods are used to secure the ostomy bag, then the bag can be attached to the skin, but skin irritation and leakage occur due to loss of adherence

Engineering Contradiction:

Improveattachment reliabilityVSAvoidskin irritation

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent removes the adhesive layer from the attachment system entirely. Instead of using adhesives to secure the ostomy bag to the skin, the invention extracts the harmful adhesive component and replaces it with a mechanical locking system consisting of an internal flange structure that engages with an external flange, eliminating skin irritation while maintaining secure attachment

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the chemical bonding mechanism (adhesive) with a mechanical locking system. The internal flange with locking features engages with the external flange through mechanical interlocking, providing secure attachment without requiring adhesives that cause skin irritation and leakage

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If adhesive-based attachment methods are used to secure the ostomy bag, then the bag can be attached to the skin, but leakage occurs due to loss of adherence

Engineering Contradiction:

Improveattachment reliabilityVSAvoidleakage

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent removes the adhesive layer from the attachment system entirely. Instead of using adhesives to secure the ostomy bag to the skin, the invention extracts the harmful adhesive component and replaces it with a mechanical locking system consisting of an internal flange structure that engages with an external flange, eliminating skin irritation while maintaining secure attachment

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the chemical bonding mechanism (adhesive) with a mechanical locking system. The internal flange with locking features engages with the external flange through mechanical interlocking, providing secure attachment without requiring adhesives that cause skin irritation and leakage

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Object-affected harmful factors

If the enterostomy interface is inserted into the stoma, then the terminal end of the bowel is protected, but the interface may become disassociated from the stoma

Engineering Contradiction:

Improvebowel exposure protectionVSAvoidinterface-stoma association

Core Design Contradiction:

Object-affected harmful factorsVSStability of the object's composition

Solution Approach 1:

The patent incorporates a flange structure within the enterostomy interface that is pre-configured to engage with the stoma opening. This preliminary structural design ensures that when the interface is inserted, the flange automatically locks into place, preventing disassociation and securing the protected position of the bowel terminal end

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces reliance on adhesive bonding for securing the interface to the stoma with a mechanical locking system. The internal flange structure with locking features provides mechanical engagement with the stoma opening, ensuring stable association and preventing disassociation while protecting the bowel terminal end

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

The solution provides a secure and comfortable attachment of the ostomy bag, reducing skin irritation and leakage, while protecting the terminal end of the bowel and enhancing patient dignity by hiding it within the interface.

Implementation Method 1

a resilient mechanical detent system to secure the ostomy bag

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

a seal placed into a seal groove located within a perimeter of an upper surface of the annular upper flange, the seal being positioned between the annular upper flange and the securement interface

Methodology Applied

Scientific EffectPhysical Containment: Physical Containment

Data Source

PatentUS12485035B1Ostomy apparatuses and methods of use

Publication Date: 2025.12.02 CLINGAN RODNEY

AI summary

Ostomy apparatuses and methods of use are disclosed herein. An example apparatus can include an ostomy interface configured to be inserted into a stoma of a patient, the ostomy interface being shaped so as to prevent disassociation of the ostomy interface from the stoma, the ostomy interface having an annular upper flange; and a securement interface that is configured to lockingly mate with the annular upper flange of the ostomy interface and couple an ostomy bag to the ostomy interface.