Threaded Urostomy Drain Valve for Spill-Free Urine Emptying
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Solution Overview
Problem
Existing urostomy appliances lack a convenient and user-friendly solution for draining urine, often requiring hand repositioning and risking spillage or dripping.
Innovation Solution
A valve with a threaded connection between a first and second valve portion, allowing rotation to open and close, featuring a threaded connection between a stem and sleeve to control fluid flow without hand repositioning, ensuring no dripping or spillage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional valve design is used, then the valve can control fluid drainage, but the user must reposition hands during operation and risks spillage or dripping
Solution Approach 1:
The valve employs a dynamic sealing mechanism where the sleeve moves axially relative to the stem through threaded engagement. This dynamic adjustment allows the sleeve to transition between sealed and open positions, enabling controlled fluid drainage while maintaining reliability through precise mechanical positioning without requiring hand repositioning
Solution Approach 2:
The threaded connection acts as an intermediary mechanism between the sleeve and stem, converting rotational motion into axial displacement. This intermediary mechanism enables smooth, controlled movement of the sleeve along the stem axis, facilitating reliable sealing and opening operations without direct hand contact adjustments
2Ease of operation
If a threaded connection between stem and sleeve is used, then controlled fluid flow is achieved without hand repositioning, but the device structure becomes more complex
Solution Approach 1:
The valve merges the sealing function and the flow control function into a single integrated mechanism. The sleeve simultaneously performs sealing against the stem and flow control through its axial position, while the threaded connection combines structural support with the actuation mechanism, reducing the need for separate components
Solution Approach 2:
The sleeve serves multiple functions: it acts as a seal against the stem, controls fluid flow through its axial position, and engages with the threaded connection for actuation. The stem also serves dual purposes as both a structural support and a flow conduit. This multi-functionality reduces overall device complexity despite the threaded connection
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 valve provides easy and controlled fluid drainage with no need for hand repositioning, ensuring smooth operation and preventing undesirable leakage.
Implementation Method 1
the stem and the sleeve are threadedly engaged by a threaded connection, wherein the threaded connection between the stem and the sleeve is adapted for displacing the sleeve away from the head portion of the first valve portion to open the channel
Data Source
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AI summary
A valve (10) for draining fluid from a urostomy pouch (5), where the valve (10) comprises a first valve portion (20) comprising a head portion (24), an inlet (15), a stem (6), a first bore (22), at least one outlet opening (23) and a distal end closure (15), a second valve portion (30) comprising a sleeve (7), a second bore (32) and a valve outlet (33), wherein the stem (6) and the sleeve (7) are threadedly engaged by a threaded connection (26), the first bore (22) and the second bore (32) form a channel to transport fluid from the inlet (15) to the valve outlet (33), the sleeve (7) encircles the stem (6) and is adapted to close off the channel to prevent drainage of fluid, the distal end closure (25) of the first valve portion (20) is adapted to close off the valve outlet (33) of the second valve portion (30), the threaded connection (26) between the stem (6) and the sleeve (7) is adapted for displacing the sleeve (7) away from the head portion (24) of the first valve portion (20) to open the channel and allow drainage of fluid through the valve (10), as the distal end closure (25) is displaced simultaneously into the second bore (32).