Ostomy Valve Closure and Flow Control for Leak-Safe Drainage
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Solution Overview
Problem
Existing ostomy appliances face challenges in effectively managing high-liquid waste flow, particularly in urostomy and ileostomy devices, where current valves struggle to prevent liquid leakage and provide comfortable, reliable drainage solutions.
Innovation Solution
A valve system for ostomy appliances featuring a body with a movable closure arrangement and optional flow control mechanisms, including a detachable closure mechanism and internal flow control formations, ensures secure liquid containment and comfortable wear by minimizing sharp edges and allowing flexible attachment options.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a valve with a closure arrangement is used to control liquid flow, then liquid leakage is prevented, but the device complexity increases
Solution Approach 1:
The valve is divided into separate functional components: a valve body, a closure arrangement with closure member, and a flow control formation. This segmentation allows each component to be optimized independently and simplifies the overall assembly process while maintaining effective liquid leakage prevention through the coordinated function of these modular parts.
Solution Approach 2:
The closure arrangement is designed to be movable between different positions (open and closed states) to control liquid flow dynamically. The flow control formation can also be positioned to different locations within the valve body, allowing the valve to adapt its flow control characteristics based on operational requirements, thereby preventing leakage when needed while maintaining ease of operation.
2Reliability
If a movable closure arrangement is used to control flow, then liquid containment is improved, but the ease of operation decreases
Solution Approach 1:
The flow control formation is designed to be movable to different positions within the valve body, allowing the user to adjust the flow rate by simply moving this formation. This self-service mechanism eliminates the need for complex external flow control devices or multiple valves, maintaining ease of operation while improving liquid containment through the closure arrangement's reliable sealing action.
3Ease of manufacture
If sharp edges are present in the valve structure, then manufacturing is easier, but user comfort deteriorates
Solution Approach 1:
The valve body and associated components are designed with rounded and curved surfaces throughout, eliminating sharp edges and corners. This curvature is maintained in the flow paths, the closure arrangement interfaces, and the external surfaces of the valve. This design choice may require slightly more complex manufacturing processes, but it ensures excellent user comfort by preventing irritation and discomfort at the wear site while maintaining effective liquid containment.
Data Source
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AI summary
A valve (100) for an ostomy appliance (10) including: a body (110) for connection to the ostomy appliance (10), an inlet and an outlet (104), connected by a flow path, a closure arrangement (120) which is moveable between a closed position, in which the closure arrangement blocks the outlet (104), such that liquid cannot flow through the outlet (104), and an open position in which the outlet (104) is open, such that liquid is permitted to flow out of the outlet (104), and wherein the valve (100) includes a flow control formation (300) which is configured to default to an open condition and has a closed condition in which the flow of liquid from the outlet (104) is prevented or at least inhibited.