Jet Pump Adaptor for Non-Invasive Ventilation
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Solution Overview
Problem
Current ventilation systems lack integration of a jet pump within the patient circuit for non-invasive open ventilation, relying instead on venturi devices or air entrainment masks, which limits the delivery of pressurized breathable gas and ambient air entrainment.
Innovation Solution
An adaptor with a rotatable nozzle element and base element, featuring a jet nozzle and entrainment port, integrated into the patient circuit to facilitate ambient air entrainment and generate pressure, compatible with standard ventilation masks, including non-vented and vented nasal or full-face masks, capable of producing up to 30 cm H2O pressure and 100 l/min flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a jet pump is integrated into the patient circuit, then ambient air entrainment and pressurized gas delivery are improved, but device complexity increases
Solution Approach 1:
The jet pump adaptor integrates multiple functional components within a compact structure. The adaptor houses the jet nozzle, entrainment ports, and connection interfaces in a nested arrangement where the jet nozzle is positioned within the adaptor body, and entrainment ports are integrated into the adaptor housing, creating a space-efficient design that delivers complex functionality without proportionally increasing device complexity
Solution Approach 2:
The invention combines the functions of gas delivery, ambient air entrainment, and pressure generation into a single integrated adaptor component. The jet pump adaptor merges the jet nozzle assembly, entrainment port system, and patient circuit connection into one unified device that attaches to standard ventilation masks, consolidating multiple functions that would otherwise require separate components
2Power
If jet pump is used for pressurized gas delivery, then flow rate and pressure generation are improved, but manufacturing complexity increases
Solution Approach 1:
The jet pump adaptor achieves variable pressure and flow rate capabilities through parameter changes in the jet nozzle design. By adjusting nozzle diameter, length, and orientation angles, the system can deliver different pressure levels (up to 30 cm H2O) and flow rates (up to 100 l/min) without requiring complex mechanical adjustment mechanisms, simplifying manufacturing while maintaining performance flexibility
Solution Approach 2:
The adaptor is designed with modular components that can be manufactured separately and assembled. The jet nozzle, entrainment ports, and connection interfaces are defined as distinct functional segments that can be produced using standard manufacturing processes and then integrated into the final adaptor assembly, reducing overall manufacturing complexity
3Adaptability or versatility
If adaptor is designed for compatibility with standard masks, then adaptability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The jet pump adaptor is designed with a universal connection interface that is compatible with standard ventilation masks used in non-invasive ventilation. The adaptor incorporates standardized connection geometries and mounting features that can interface with various mask types (nasal masks, full-face masks), allowing a single adaptor design to serve multiple mask configurations without requiring custom manufacturing for each mask type
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 efficient delivery of pressurized breathable gas and ambient air entrainment, enhancing ventilation efficacy while allowing for adjustable pressure and flow settings through varying nozzle sizes and configurations, suitable for non-invasive open ventilation systems.
Implementation Method 1
a jet nozzle, and wherein the jet nozzle and the delivery port collectively define a gas delivery line
Implementation Method 2
facilitate the entrainment of ambient air
Implementation Method 3
outfitted with a jet pump to facilitate the entrainment of ambient air
Data Source
AI summary
In accordance with the present invention, there is provided an adaptor or attachment which is suitable for integration into the patient circuit of a ventilation system, such as a non-invasive open ventilation system, is configured for attachment to any standard ventilation mask, and is outfitted with a jet pump which creates pressure and flow by facilitating the entrainment of ambient air. The adaptor comprises a base element and a nozzle element which are operatively coupled to each other. The base element further defines a throat and at least one entrainment port facilitating a path of fluid communication between the throat and ambient air. The nozzle element includes a jet nozzle, and a connector which is adapted to facilitate the fluid coupling of the nozzle element to a bi-lumen tube of the patient circuit. The connector includes both a delivery port and a sensing port. The jet nozzle and the delivery port collectively define a delivery line or lumen which fluidly communicates with the throat of the base element, and is placeable into fluid communication with the delivery lumen of the bi-lumen tube.