Ostomy Pouch Comfort Layer Lamination Without Adhesive Leakage
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Solution Overview
Problem
Existing ostomy pouches with woven comfort layers face increased complexity, cost, bulk, and noise due to additional layers, and adhesive leakage issues, compromising discretion and comfort.
Innovation Solution
An ostomy pouch design featuring a laminated continuous film layer on a woven comfort material without intervening adhesive, allowing direct bonding to the pouch walls, reducing complexity and noise while preventing adhesive leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If an additional intervening wall layer is added to prevent fraying and improve processing, then the pouch structure is more stable and edges are protected, but the device complexity increases, manufacturing cost increases, bulk increases, and noise increases making the pouch less discreet
Solution Approach 1:
The patent removes the separate intervening wall layer from the pouch structure, extracting this component entirely. Instead, the comfort layer itself is directly bonded to the front wall, eliminating the need for an additional protective layer while maintaining edge stability through the bonding structure alone.
Solution Approach 2:
The patent merges the functions of the comfort layer and the intervening wall by directly bonding the comfort layer to the front wall. This consolidation eliminates the separate intervening wall layer while combining the protective and comfort functions into a single integrated structure.
2Ease of manufacture
If woven material is used as comfort layer to make pouch more attractive and less medical-looking, then user comfort and aesthetic appeal are improved, but the manufacturing complexity increases and adhesive leakage issues arise
Solution Approach 1:
The patent applies local quality by providing adhesive only at the periphery of the comfort layer rather than across the entire surface. This localized adhesive application prevents adhesive leakage into the pouch cavity while maintaining secure bonding at the critical edge regions where the comfort layer meets the front wall.
3Reliability
If comfort layer is continuously bonded to pouch walls to prevent adhesive leakage, then bonding reliability is improved, but the ability to pull comfort layer aside for inspection is lost
Solution Approach 1:
The patent applies local quality by providing adhesive only at the periphery of the comfort layer rather than across the entire surface. This localized adhesive application prevents adhesive leakage into the pouch cavity while maintaining secure bonding at the critical edge regions where the comfort layer meets the front wall.
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 design enhances user discretion, comfort, and manufacturing efficiency by eliminating additional layers and adhesive leakage, enabling longer pouch use and reduced environmental waste.
Implementation Method 1
a layer of film material laminated across an inside surface of the sheet of comfort material
Implementation Method 2
The comfort material is bonded to the front wall at a periphery by welding
Data Source
AI summary
An ostomy pouch having a cavity for storing stomal output. The cavity is defined by a rear wall and a front wall joined at their peripheries and formed of flexible sheet material. The ostomy pouch further comprises a sheet of woven comfort material covering the outside surface of the front wall. The sheet of comfort material has an outside surface and an opposite inside surface, and the outside surface of the sheet of comfort material forms at least part of the outside surface of the pouch. The inside surface of the sheet of comfort material is laminated across its entire surface to a continuous layer of film material. At least part of the continuous layer of film material is adjacent, facing and unbonded to the outside surface of the front wall.