Rotatable Urostomy Outlet Valve for Kink-Free Tube Drainage
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Solution Overview
Problem
Urostomy pouch tubes tend to kink when connected to a collecting bag at night, obstructing urine flow and potentially leading to leakage, as existing solutions are not sufficiently convenient for preventing kinking.
Innovation Solution
The outlet valve features a valve stem that can freely rotate with respect to the valve housing, utilizing bayonet coupling means with recesses and protrusions to allow for kink-free connection to a collecting bag, ensuring unobstructed urine flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the valve stem is fixed relative to the valve housing, then the connection structure is simpler, but the tube is prone to kinking when connected to a collecting bag
Solution Approach 1:
The valve stem is designed to be rotatable relative to the valve housing through bayonet coupling means, allowing the connected tube to dynamically adjust its position and prevent kinking while maintaining a relatively simple valve structure
2Ease of operation
If the valve stem is made rotatable to prevent tube kinking, then tube flow continuity is improved, but the valve structure becomes more complex
Solution Approach 1:
The bayonet coupling means enable the valve stem to rotate freely relative to the valve housing, providing operational flexibility for tube connection and preventing kinking while adding minimal structural complexity through standardized coupling features
Solution Approach 2:
The bayonet coupling means serve multiple functions: they allow free rotation of the valve stem, provide secure connection between components, and enable easy assembly and disassembly, thereby improving ease of operation without proportionally increasing device complexity
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
An outlet (4) for a pouch (1) in a urostomy appliance is provided. The outlet has a valve with a valve housing (5) and a valve stem (6) that is movable in the longitudinal direction with respect to the valve housing. In a position of the valve stem, the stem can freely rotate with respect to the valve housing, so as to prevent kink and obstructions in a tube connecting the valve with a collecting bag. A urostomy appliance with an outlet is also provided.