Poppet Valve Pressure Transducer for Monitoring and Flush Flow
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Solution Overview
Problem
Existing disposable blood pressure transducers (DPTs) face challenges in efficiently managing fluid flow rates for accurate pressure monitoring and effective flushing, which can lead to fluid coagulation and require complex valve mechanisms.
Innovation Solution
A pressure transducer assembly with an integral flow restrictor and poppet mechanism that allows for controlled fluid flow through a housing, featuring a flow restrictor defined by a valve seat between inlet and outlet ports, enabling slow and fast-flow modes by decoupling the poppet from the valve seat to facilitate flushing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a complex valve mechanism is used to manage fluid flow rates, then flushing capability is improved, but device complexity increases
Solution Approach 1:
The patent extracts the flow control function from a complex valve mechanism and implements it through a simple poppet component that can be easily removed from the valve seat. This allows the flow restrictor to provide controlled flow during monitoring while enabling manual flushing by simply removing the poppet, eliminating the need for complex valve mechanisms.
Solution Approach 2:
The flow control system is segmented into distinct functional components: the valve seat provides the sealing surface, the poppet serves as the removable flow control element, and the flow restrictor defines the restricted flow path. This segmentation allows each component to perform its specific function independently while maintaining overall system simplicity.
2Measurement precision
If fluid flow rate is restricted for accurate pressure monitoring, then measurement precision is improved, but fluid coagulation risk increases
Solution Approach 1:
The system dynamically adjusts fluid flow rate based on operational mode. During pressure monitoring, the poppet remains seated to provide restricted flow through the flow restrictor for accurate measurements. When flushing is required, the poppet is removed to enable high-flow flushing that prevents coagulation. This dynamic adaptability resolves the contradiction between restricted flow for measurement and sufficient flow for coagulation prevention.
3Productivity
If a poppet mechanism is added to control flow rates, then fluid flow control is improved, but device complexity increases
Solution Approach 1:
The poppet is designed with localized sealing surfaces that mate with corresponding features on the valve seat. The sealing portion of the poppet has a specific geometry that creates an effective seal when engaged with the valve seat, providing flow control without requiring a complex overall mechanism. The simplicity of this localized interaction keeps the device straightforward while achieving effective flow control.
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 solution provides controlled fluid flow rates for accurate pressure monitoring, prevents coagulation, and enables efficient flushing, enhancing the functionality and reliability of disposable blood pressure transducers.
Implementation Method 1
a flow restrictor, defined by a valve seat between the inlet port and the outlet port
Implementation Method 2
A pressure transducer assembly with an integral flow restrictor and poppet mechanism that allows for controlled fluid flow through a housing, featuring a flow restrictor defined by a valve seat between inlet and outlet ports, enabling slow and fast-flow modes by decoupling the poppet from the valve seat to facilitate flushing
Data Source
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AI summary
A pressure transducer assembly is disclosed for directly monitoring pressure in a fluid which flows through the assembly. The pressure transducer can include a housing comprising a flow restrictor, an inlet port, and an outlet port. A poppet can be coupled with the housing. The flow restrictor can be defined by a valve seat of the housing between the inlet port and the outlet port.