Ventilator Pressure Oscillation Mitigation Valve
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Solution Overview
Problem
Medical ventilators face challenges in providing optimal flow requirements for neonatal patients due to pressure oscillations, which existing technologies like micro-piston pump compressors and internal silicone diaphragms are insufficient to adequately control, especially for low flow applications.
Innovation Solution
A ventilation air pressure oscillation mitigation device with a housing, valve seat, and actuator that selectively positions a valve body to direct airflow through primary or secondary openings, using a filter media to optimize flow and reduce oscillations, adapting to different patient groups by switching between flow-through and bypass modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing technologies like micro-piston pump compressors and internal silicone diaphragms are used, then the ventilator can provide basic ventilation function, but pressure oscillations are not adequately controlled especially for low flow applications
Solution Approach 1:
The valve seat is divided into multiple openings (primary and secondary) that can be selectively activated. The valve body segments the flow path, allowing different portions of the ventilation air to pass through different openings based on flow requirements, thereby optimizing pressure control for neonatal patients
Solution Approach 2:
The valve body is selectively positionable between multiple positions (first and second positions) to dynamically adjust the flow path. This dynamic adjustment allows the system to adapt to different patient groups and flow requirements, improving pressure oscillation control while maintaining productivity
2Reliability
If a valve body with multiple positions is introduced to control pressure oscillations, then pressure oscillation control improves, but device complexity increases
Solution Approach 1:
The pressure oscillation control function is merged into the existing valve structure by adding a selectively positionable valve body to the valve seat. This integration allows pressure control without requiring a completely separate complex mechanism, balancing reliability improvement with acceptable device complexity
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
Significantly reduces pressure oscillations, enhancing ventilator performance and ensuring optimal gas flow for neonate patients by dynamically adapting airflow based on patient parameters, improving detection sensitivity and efficiency.
Implementation Method 1
a valve body selectively positionable in a first position and a second position, wherein when the valve body is in the first position, substantially all of a first flow of ventilation air from the inlet to the outlet passes through the primary opening, and wherein when the valve body is in the second position, all of a second flow of ventilation air from the inlet to the outlet passes through the plurality of secondary openings
Implementation Method 2
using a filter media to optimize flow and reduce oscillations
Data Source
AI summary
A ventilation air pressure oscillation mitigation device for a ventilator includes a housing defining an inlet and an outlet. The device includes a valve seat defining a primary opening and a plurality of secondary openings. A valve body is selectively positionable in a first position and a second position within the device. In the first position, substantially all of a first flow of ventilation air from the inlet to the outlet passes through the primary opening. When the valve body is in the second position, all of a second flow of ventilation air from the inlet to the outlet passes through the plurality of secondary openings. An actuator controls a position of the valve body.