Disposable Pressure Transducer Bypass Flow for Coagulation Control
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Solution Overview
Problem
Current disposable pressure transducers for monitoring hemodynamic pressures face challenges in efficiently managing fluid flow and preventing coagulation, which can lead to inaccurate readings and device clogging.
Innovation Solution
The design incorporates a housing with an integral flow restrictor, an inlet port, and an outlet port, featuring a poppet that decouples to allow fluid to flow through a bypass channel, controlling the flow rate and preventing coagulation by restricting fluid flow when engaged and allowing rapid flushing when disengaged.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fluid flow is restricted through the flow restrictor to prevent coagulation, then coagulation is prevented, but fluid flow rate is reduced
Solution Approach 1:
The poppet valve provides dynamic control of fluid flow by allowing the system to switch between two flow states: restricted flow (when poppet is engaged) to prevent coagulation, and unrestricted flow (when poppet is disengaged) to enable rapid flushing. This dynamic adjustment resolves the contradiction between maintaining low flow for coagulation prevention and enabling high flow for flushing when needed.
Solution Approach 2:
The system changes the flow rate parameter by using the poppet valve to either engage the flow restrictor (low flow rate) or bypass it (high flow rate). This parameter change allows the system to adapt to different operational requirements, preventing coagulation during normal operation while enabling rapid flushing when necessary.
2Reliability
If the poppet is engaged to restrict fluid flow, then coagulation is prevented, but rapid flushing capability is reduced
Solution Approach 1:
The poppet valve enables dynamic switching between restricted flow mode (for coagulation prevention) and unrestricted flow mode (for rapid flushing). When rapid flushing is needed, the poppet is disengaged, allowing fluid to bypass the flow restrictor and flow rapidly through the system, thus resolving the contradiction between maintaining restricted flow and enabling rapid flushing.
Solution Approach 2:
The bypass channel acts as an intermediary pathway that allows rapid flushing when the poppet is disengaged. This intermediary structure enables the system to overcome the flow restriction imposed by the flow restrictor during flushing operations, allowing high-speed fluid flow without compromising the coagulation prevention mechanism during normal operation.
3Reliability
If a flow restrictor is added to control fluid flow, then coagulation is prevented, but device complexity increases
Solution Approach 1:
The flow restrictor and bypass channel are integrated into a single housing structure, with the poppet valve serving dual functions of sealing against the valve seat and controlling flow. This merging of components reduces the overall device complexity compared to having separate, discrete components for each function.
Solution Approach 2:
The poppet valve serves multiple functions: it seals against the valve seat to enable restricted flow through the flow restrictor, and when disengaged, it opens the bypass channel for rapid flushing. This multi-functionality reduces the need for additional components, thereby reducing device complexity while maintaining coagulation prevention capability.
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 solution ensures accurate pressure monitoring by controlling fluid flow rates and preventing coagulation, enhancing the reliability and longevity of disposable pressure transducers.
Implementation Method 1
The flow restrictor is defined by a valve seat between the inlet port and the outlet port
Implementation Method 2
The decoupling allows the fluid to travel through a second flow path. The second flow path includes the inlet port, a by-pass channel, and the outlet port
Data Source
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.