Ostomy Device Peripheral Wall Elastic Rebound Seal
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Solution Overview
Problem
Current ostomy devices face challenges in providing a secure and comfortable fit for stomas of varying sizes and shapes, often requiring complex application processes and exerting excessive force, which can cause discomfort and irritation to the peristomal skin.
Innovation Solution
An ostomy device with a laminate structure that can be radially expanded to accommodate the stoma and then contract to form a gentle seal, using a substrate layer and adhesive layer with specific material properties to ensure a secure and comfortable fit without exposing the skin to effluent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mouldable adhesive barrier with a roll-back mechanism is used to form a tight seal around the stoma, then the seal reliability is improved, but the device complexity and thickness increase due to the required laminate structure
Solution Approach 1:
The patent uses a thin, flexible peripheral wall made of elastomeric material that can be stretched and will rebound to form a seal. This single-layer flexible structure replaces the complex multi-layer mouldable barrier, achieving the sealing function without requiring roll-back mechanisms or thick laminates
Solution Approach 2:
The invention extracts and removes the complex mouldable adhesive barrier and roll-back mechanism from the device, replacing them with a simpler stretched peripheral wall that achieves sealing through elastic rebound rather than mechanical moulding
2Reliability
If a relatively thick resilient film layer is used in the mouldable adhesive barrier to form a tight seal, then the seal reliability is improved, but the device thickness increases which affects breathability and conformability
Solution Approach 1:
The patent employs a thin peripheral wall instead of a thick resilient film layer. The thin wall is stretched during application and then rebounds to contact the stoma, forming an effective seal without the thickness that would compromise breathability or conformability
Solution Approach 2:
The invention changes the physical state and dimensions of the sealing element by stretching the peripheral wall during application. This temporary parameter change allows the thin wall to span a larger area and form an effective seal without requiring permanent thickness increases
3Ease of operation
If the peripheral wall is made to rebound and close the opening to contact around the edge of the stoma, then the ease of operation is improved, but the force applied to the stoma increases which may cause discomfort
Solution Approach 1:
The patent applies only the necessary amount of stretching force during application, avoiding excessive force. The peripheral wall is stretched just enough to accommodate the stoma and then rebounds with minimal residual force, preventing discomfort while maintaining ease of application
Solution Approach 2:
The elastomeric material of the peripheral wall inherently provides cushioning during the rebound process. This material property ensures that when the wall contacts the stoma after stretching, it does so with controlled force that prevents discomfort while maintaining seal integrity
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 device allows for easy application and forms a leak-free seal with minimal force, reducing irritation and discomfort while maintaining breathability and conformability, thus providing a more effective and user-friendly solution for ostomy management.
Implementation Method 1
the peripheral wall is operable to expand in the plane of the laminate structure from a pre-expanded state to an expanded state to radially enlarge the aperture
Implementation Method 2
the peripheral wall is further operable to contact the stoma, wherein once in its expanded state, the peripheral wall is operable to contract from the expanded state towards its pre-expanded state
Data Source
AI summary
The present invention relates to an ostomy device for contacting a stoma. The present invention also relates to the use of an ostomy device for contacting a stoma and a kit of parts for preparing an ostomy assembly or system.