Drainable Ostomy Pouch Closure System Sealing
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Solution Overview
Problem
Existing drainable ostomy pouches face challenges in providing a secure and easy-to-use closure system that minimizes leakage and facilitates easy drainage and cleaning, while maintaining a secure seal to reduce odor and risk of soiling.
Innovation Solution
A drainable ostomy pouch with a closure system comprising four closure members and a two-part fastening system, where the closure members are arranged to allow easy opening and secure folding of the neck portion, utilizing curved members and interlocking fastener strips for improved sealing and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a closure system with multiple closure members and fastening strips is used, then the sealing reliability is improved, but the device complexity increases
Solution Approach 1:
The closure system is divided into multiple independent closure members (first, second, third closure members) and a two-part fastening system (first and second fastening strips). Each component performs a specific function: closure members provide sealing at different locations, while fastening strips secure the rolled neck portion. This segmentation allows the system to achieve high sealing reliability through multiple layers of protection while maintaining manufacturability by using simple, discrete components that can be independently produced and assembled.
2Ease of operation
If the neck portion is designed to be rolled and secured with closure members, then the ease of operation for drainage is improved, but the risk of leakage increases due to potential improper closure
Solution Approach 1:
The closure members are pre-positioned on the neck portion at specific locations before use. The first closure member is positioned at a first location, the second closure member at a second location, and the third closure member at a third location along the neck portion. This preliminary positioning ensures that when the neck portion is rolled for closure, the closure members are already in the correct positions to provide effective sealing, eliminating the need for complex real-time adjustments and reducing the risk of improper closure.
Solution Approach 2:
Multiple closure members are strategically positioned at different locations along the neck portion to provide redundant sealing protection. The first closure member provides initial sealing, the second closure member provides additional sealing at a different location, and the third closure member provides further sealing assurance. This layered approach cushions against the risk of any single closure member failing to seal properly, thereby preventing leakage while maintaining ease of operation.
3Object-generated harmful factors
If the discharge opening is kept closed during waste collection, then odor control is improved, but the risk of soiling during drainage operation increases
Solution Approach 1:
The closure members are pre-positioned and the fastening strips are pre-attached to the pouch body before use. During waste collection, the neck portion remains securely closed with the discharge opening sealed by the closure members, preventing odor escape. When drainage is needed, the user simply needs to open the pre-positioned closure members and unfasten the pre-attached fastening strips, allowing quick and clean drainage without risking soiling because the closure mechanism is already in place and ready for controlled opening.
Data Source
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Figure 3
Figure 4~5E
AI summary
A drainable ostomy pouch (10) includes a closure system, which includes four closure members (22, 24, 26, 28) and a two-part fastening system (34,36). The closure system is arranged on a neck portion of the drainable pouch, and configured such that the pouch can be securely sealed after the neck portion is folded up three times and closed using the two-part fastening system.