Catheter Drainage Valve With Resilient Switch Flow Control
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Solution Overview
Problem
Conventional urinary catheters lack a convenient way to adjust the drainage path, and their control valves are complex and costly.
Innovation Solution
A drainage device with a resilient switch in the catheter that allows manual adjustment of the valve opening through pressing, bending, or shaking, featuring an elastic structure, driving part, recovery-blocking part, and unlocking handle to control the passageway between normally closed, open, or variable open statuses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a control valve is added to enable drainage control, then drainage controllability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges the resilient switch and valve components into a single integrated assembly. The switch is positioned within the valve body, and its actuation directly controls the valve opening without requiring separate control mechanisms. This integration eliminates the need for additional parts and simplifies the overall structure while maintaining drainage controllability.
Solution Approach 2:
The resilient switch serves multiple functions: it acts as both the control actuator and the valve mechanism itself. By designing the switch to directly influence valve opening, the component performs dual roles, reducing the total number of parts needed and lowering manufacturing complexity.
2Manufacturing precision
If a resilient switch with recovery-blocking function is added, then drainage control precision is improved, but device complexity increases
Solution Approach 1:
The recovery-blocking function is integrated into the resilient switch structure itself rather than being a separate mechanism. The switch design incorporates features that automatically block recovery under certain conditions, eliminating the need for additional blocking components and maintaining structural simplicity.
Solution Approach 2:
The resilient switch automatically provides recovery-blocking functionality through its own structural design. When activated, the switch inherently prevents unintended recovery without requiring external control systems or additional parts, making the precision control feature self-contained.
3Ease of manufacture
If the valve structure is simplified to reduce manufacturing cost, then manufacturing cost is reduced, but drainage control precision deteriorates
Solution Approach 1:
The integration of the resilient switch with the valve body creates a simplified structure that requires fewer manufacturing steps and parts. This merging maintains precision control because the switch directly actuates the valve without intermediate components, eliminating sources of error while reducing manufacturing complexity.
Solution Approach 2:
The resilient switch utilizes elastic or flexible materials that can be molded into precise shapes, allowing for accurate control characteristics to be achieved through material properties rather than complex mechanical assemblies. This approach maintains precision while simplifying manufacturing.
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
Enables easy manual control of fluid flow, providing a convenient and cost-effective solution for urinary drainage, especially for patients with urinary incontinence or post-surgery wounds.
Implementation Method 1
the resilient switch includes an elastic structure, a driving part, a recovery-blocking part and an unlocking handle, where the driving part is movable by a deformation response of the elastic structure to have a displacement to alter an opening of the passageway of the valve body
Data Source
AI summary
A drainage device having a catheter and a control valve, the control valve having a valve body and a resilient switch controlling the valve body, the valve body being connected to the catheter, the resilient switch being provided in the catheter, and characterized in that: the user can deform the resilient switch to adjust the opening of the valve body by pressing the catheter or pressing a body part having a cavity accommodating the catheter, and can further compel the resilient switch into a recovery-blocked status; and the user can release the recovery-blocked status by bending or shaking the catheter or bending or shaking the body part accommodating the catheter.