Ostomy Flange Locking Interface for Adhesive-Free Leak Prevention

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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, with a graft material to fuse with the skin and bowel, and a seal to prevent 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 component from the attachment system entirely. Instead of using adhesive to secure the ostomy bag to the skin, the invention extracts the harmful adhesive element and replaces it with a mechanical locking system consisting of an enterostomy interface with a flange inserted into the stoma and a securement interface that lockingly mates with the enterostomy interface.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces an intermediary mechanical locking system between the ostomy bag and the patient's body. The enterostomy interface with its flange and the securement interface act as intermediaries that provide a reliable connection without direct skin contact from adhesive materials, thereby preventing skin irritation while maintaining attachment reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 component from the attachment system entirely. Instead of using adhesive to secure the ostomy bag to the skin, the invention extracts the unreliable adhesive element and replaces it with a mechanical locking system consisting of an enterostomy interface with a flange inserted into the stoma and a securement interface that lockingly mates with the enterostomy interface.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of operation

If the terminal end of the bowel is exposed, then the bowel can be accessed for waste collection, but patient dignity and comfort are compromised

Engineering Contradiction:

Improvewaste collection accessVSAvoidpatient dignity

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent applies the nesting principle by placing the terminal end of the bowel inside the enterostomy interface, which is then covered by the securement interface and the ostomy bag. This nested arrangement allows the bowel to be accessed for waste collection while simultaneously hiding the terminal end of the bowel from external view, thereby preserving patient dignity and comfort.

Inventive Principle:

Principle #7Nested doll (Nesting)

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 secure attachment of the ostomy bag, reduces skin irritation, prevents leakage, and enhances patient dignity by hiding the terminal end of the bowel, improving overall comfort and quality of life.

Implementation Method 1

a resilient mechanical detent system to secure the ostomy bag

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

a seal to prevent leakage

Methodology Applied

Scientific EffectPhysical barrier: Physical Containment

Data Source

PatentUS20260083583A1Ostomy apparatuses and methods of use

Publication Date: 2026.03.26 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.