Three-way Valve Pneumatic Switching for Ventilator Circuit Adaptation
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Solution Overview
Problem
The ergonomic challenge in operating medical ventilators lies in the time-consuming process of connecting and configuring patient circuits, which can lead to confusion, especially in emergency situations, potentially causing a lack of ventilation for the patient.
Innovation Solution
A medical ventilator system that allows for direct pneumatic switching between patient circuits without the need to interface with an electronic display or buttons, using dedicated patient circuit adaptors and three-way valves that toggle based on plugging and unplugging tubes, ensuring intuitive and quick switching and clear identification of the connected circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operator uses the traditional electronic interface to select and configure patient circuits, then the ventilator can provide precise control and monitoring, but the process becomes time-consuming and complex, leading to delays in emergency situations
Solution Approach 1:
The patent replaces the electronic software interface with a mechanical pneumatic system. The three-way valve uses physical tube connections to external ports to automatically configure the ventilator for different patient circuit types, eliminating the need for electronic menu navigation and button pressing.
Solution Approach 2:
The system performs self-configuration through the physical act of connecting tubes. When the operator connects a tube to an external port, the pneumatic system automatically detects the connection and reconfigures the valve positions and circuit pathways without requiring operator intervention in electronic controls.
2Adaptability or versatility
If the operator needs to switch between different patient circuit types during ventilation, then the ventilator can adapt to different patient needs, but the switching process interrupts ventilation and causes delays
Solution Approach 1:
The external ports and tube connectors are pre-configured for specific patient circuit types. The mechanical connection itself performs the configuration action, so the switching is prepared in advance through the physical design of the connection interfaces rather than requiring step-by-step electronic configuration during the switch.
Solution Approach 2:
The patent uses pneumatic pressure and airflow to detect tube connections and actuate the three-way valve. The pneumatic system responds immediately to physical connections, enabling rapid switching between circuit configurations without electronic processing delays.
3Adaptability or versatility
If the ventilator provides multiple control ports and sensing options, then it can accommodate different patient circuit configurations, but the operator becomes confused about which connections to make
Solution Approach 1:
The patent segments the control interface into distinct external ports, each dedicated to a specific function (e.g., pressure sensing, flow sensing, exhalation valve control). This physical segmentation makes the purpose of each connection obvious and eliminates confusion about which ports to use for different circuit types.
Solution Approach 2:
The patent employs visual differentiation of tube connectors and ports through color coding or distinct physical markings. This allows the operator to quickly identify the correct connection points for different patient circuit types without needing to understand complex electronic configurations.
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
Enables rapid and intuitive switching between patient circuits, reducing the risk of errors and ensuring continuous ventilation by allowing operators to configure the ventilator quickly and correctly, even in emergency situations.
Implementation Method 1
a three-way valve integrated into the at least one external control port, wherein the three-way valve is connected to the at least one sensor via a common port and is configured to toggle between establishing flow or pressure communication to the console sampler and establishing flow or pressure communication to the an external control port
Data Source
AI summary
A ventilator console includes an inhalation port, an exhalation port, a console sampler to sample pressure or flow at the exhalation port and at least one sensor to sense at least one of pressure and flow velocity. The ventilator console additionally includes at least one external control port that provides an interface for flow or pressure communication between the at least one sensor and a tube connected to a patient circuit and a three-way valve integrated into the at least one external control port. The three-way valve is connected to the at least one sensor via a common port and toggles between establishing flow or pressure communication to the console sampler and establishing flow or pressure communication to the external control port.