Fluid Control Valve Sliding Member for Pressure Isolation
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Solution Overview
Problem
Conventional fluid injection systems face inaccuracies in volume delivery due to pressure differentials between multiple syringes during simultaneous injection, leading to fluid leakage and loss of delivery volume, as conventional shuttle valves do not effectively isolate or mix fluids under pressure.
Innovation Solution
A fluid control valve and manifold system that includes a sliding valve member with sealing ends and flange members, capable of isolating fluid pressure between syringes based on flow differentials and allowing for dual-flow and turbulent mixing of fluids, utilizing a valve body with inlet and outlet ports and channels for precise fluid communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional shuttle valves are used to isolate fluids under pressure, then fluid isolation is achieved, but dual flow mixing capability is lost
Solution Approach 1:
The valve member is designed to be movable between different positions (first position for isolating first fluid, second position for isolating second fluid, and intermediate position for mixing both fluids). This dynamic configuration allows the valve to adapt its function based on operational requirements, providing both isolation and mixing capabilities through a single device.
Solution Approach 2:
The valve assembly performs multiple functions: it can isolate the first fluid path, isolate the second fluid path, or allow both fluids to mix and flow simultaneously. This multi-functionality is achieved through the strategic placement of sealing surfaces and the movable valve member that can engage different sealing positions or remain centralized to permit dual flow.
2Productivity
If fluids are injected simultaneously at different pressures, then injection speed is improved, but volume delivery accuracy deteriorates due to pressure differential leakage
Solution Approach 1:
The valve member acts as an intermediary element that responds to pressure differentials between the two fluid sources. When a significant pressure differential exists, the valve member moves to seal off the lower pressure side, preventing backflow and ensuring that each fluid's delivery volume is accurately controlled despite simultaneous injection at different pressures.
Solution Approach 2:
The valve system provides automatic feedback-based pressure balancing. The movable valve member continuously responds to pressure conditions in the system, automatically adjusting its position to maintain accurate volume delivery. When pressure differential causes potential leakage, the valve member shifts to compensate, ensuring precision without requiring external control mechanisms.
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 system effectively isolates fluid pressures between syringes, preventing leakage and ensuring accurate volume delivery, while allowing for the mixing of fluids during dual-flow injections, thereby improving the precision and consistency of medical fluid injections.
Implementation Method 1
The sliding valve member is positionable in a first operating state, a second operating state, and a third operating state based on a flow differential between the first inlet lumen and the second inlet lumen
Implementation Method 2
the at least one channel providing fluid communication between the first inlet lumen, the second inlet lumen, and the outlet port in the third operating state
Data Source
AI summary
A fluid control valve for use in a fluid delivery system for delivering fluid to a patient includes a valve body defining an internal chamber, a first inlet port for receiving a first inlet tube, a second inlet port for receiving a second inlet tube, an outlet port, and a sliding valve member slidably disposed in the internal chamber. The first inlet tube defines a first inlet lumen axially aligned with the internal chamber. The second inlet tube defines a second inlet lumen axially aligned with the internal chamber. The sliding valve member includes a first sealing end and second sealing end. The sliding valve member is positionable in a first operating state, a second operating state, and a third operating state based on a flow differential between the first inlet lumen and the second inlet lumen.