Dual-Filter Check Valve for IV Backflow Contamination Control
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Solution Overview
Problem
Check valves in IV systems lack effective filtering mechanisms to prevent particulate matter from flowing back into IV reservoirs, leading to potential contamination and inefficiencies in fluid flow control.
Innovation Solution
The check valve design incorporates dual filtering mechanisms with vertically structured filters in both the upper and lower housings, along with a valve member that selectively allows fluid flow, ensuring that only filtered fluid passes through and undesirable matter is trapped, preventing backflow and maintaining fluid directionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a check valve is used to prevent backflow in IV systems, then fluid directionality is maintained, but particulate matter can still flow back into the reservoir causing contamination
Solution Approach 1:
The check valve is divided into functional segments: an upper housing with a first filter for initial particulate removal, a lower housing with a second filter for final filtration, and a valve member for backflow prevention. This segmentation allows each component to address specific aspects of the problem independently.
Solution Approach 2:
Filter elements are introduced as intermediary components between the fluid source and the valve mechanism. These filters act as mediators that intercept and remove particulate matter before it can reach the valve member or flow back into the reservoir, thus protecting the system without interfering with the check valve's primary function.
2Object-affected harmful factors
If filtering mechanisms are added to the check valve, then particulate matter is removed, but device complexity increases
Solution Approach 1:
The filtration function is merged with the check valve structure by integrating filter elements directly into the upper and lower housings. This combination eliminates the need for separate filtration devices while maintaining the backflow prevention capability, thus reducing overall system complexity despite adding filtration functionality.
Solution Approach 2:
The check valve housing is designed to serve multiple functions: structural support, fluid direction control, and particulate filtration. By making the housing multi-functional, the patent avoids adding separate components for each function, thereby minimizing the increase in device complexity while achieving effective filtration.
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
This design effectively filters out particulate matter, prevents backflow, and ensures reliable forward fluid flow, reducing contamination risks and improving the functionality of IV systems by maintaining the integrity of the fluid flow direction.
Implementation Method 1
a first filter in the upper housing to limit passage of undesirable matter in fluid flowing through the check valve
Implementation Method 2
a valve member arranged in the valve portion to selectively permit fluid to flow through the check valve
Data Source
AI summary
A check valve includes an upper housing having an inlet of the check valve, a lower housing axially coupled to the upper housing and having an outlet of the check valve, a valve portion cooperatively formed by the upper and lower housings, a passageway extending between the inlet and outlet, a first filter included in the upper housing to limit passage of undesirable matter in fluid flowing through the check valve, a second filter included in the lower housing to limit passage of undesirable matter in fluid flowing through the check valve, each of the first filter and the second filter including a plurality of vertical structures disposed in the valve portion and extending axially and radially in the valve portion, and a valve member positioned in the valve portion to selectively permit fluid to flow through the check valve.