Vibratory High-Frequency Ventilation for Neonates
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Solution Overview
Problem
Conventional ventilators cause trauma to the airways and lungs due to high volume and pressure, and existing high-frequency ventilation methods have limited success in providing adequate gas exchange for neonates and infants.
Innovation Solution
A system and method for delivering vibratory, high-frequency ventilation using a tubing array, vibration device, and bifurcated cannula, which generates and applies a jet of high-frequency oscillatory air without intubation, minimizing lung damage by using independently movable prongs and a piezoelectric-like mechanism without a motor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional ventilators are used to provide mechanical ventilation, then gas exchange is achieved, but trauma to the airways and lungs occurs due to high volume and pressure
Solution Approach 1:
The patent applies mechanical vibration through a vibration device that generates high-frequency oscillations (2-30 Hz) of the ventilatory gas flow. This vibratory motion creates high-frequency tidal breaths that improve gas exchange while using lower peak pressures and volumes compared to conventional ventilation, thereby reducing barotrauma and volutrauma to the lungs and airways.
Solution Approach 2:
The invention changes the parameters of ventilation by transitioning from conventional low-frequency, high-volume ventilation to high-frequency, low-volume ventilation with vibratory characteristics. The system delivers tidal volumes of 2-10 mL/kg with frequencies of 2-30 Hz, fundamentally altering the ventilation parameters to achieve adequate gas exchange with reduced lung injury.
2Object-affected harmful factors
If high-frequency ventilation is implemented to reduce lung trauma, then ventilator-associated lung injury is minimized, but adequate gas exchange is difficult to achieve
Solution Approach 1:
The vibration device generates high-frequency oscillations that enhance gas exchange through several mechanisms: improving ventilation-perfusion matching, reducing airway resistance through the oscillatory flow, and enhancing CO2 removal. The vibratory motion creates turbulent flow patterns that improve gas mixing and exchange efficiency while maintaining low tidal volumes.
Solution Approach 2:
The system employs periodic vibratory action at high frequencies (2-30 Hz) to deliver ventilation. The oscillatory nature of the gas flow creates repeated cycles of inspiration and expiration with very small tidal volumes, allowing adequate gas exchange through the cumulative effect of numerous rapid cycles per minute while minimizing lung injury from individual breaths.
3Reliability
If intubation is performed to ensure secure airway access, then ventilation delivery is reliable, but invasive procedures increase risk and complexity
Solution Approach 1:
The patent uses a nasal cannula as an intermediary device to deliver high-frequency vibratory ventilation non-invasively. The cannula is positioned in the nasal passages and delivers the oscillatory gas flow directly to the upper airway, serving as a less invasive alternative to endotracheal intubation while still achieving reliable ventilation delivery in many clinical scenarios.
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 non-invasive, lung-protective ventilation that reduces ventilator-associated lung injury, enhancing gas exchange and CO2 removal efficiency compared to conventional methods.
Implementation Method 1
The vibration device can be fluidly coupled to the tubing array and configured to generate and apply a jet of air to the flow of pressurized gas
Implementation Method 2
The jet of high frequency oscillatory air can be generated by oscillatory motion of one or more vibrating elements within a housing of a vibration device
Data Source
AI summary
One aspect of the present disclosure relates to a system for providing non-invasive, high frequency ventilation to a neonate or an infant in need thereof. The system can include a tubing array, a vibration device, and a bifurcated cannula. The tubing array can be adapted to receive a flow of pressurized gas therethrough. The vibration device can be fluidly coupled to the tubing array and configured to generate and apply a jet of air to the flow of pressurized gas. The bifurcated cannula can be fluidly coupled to the tubing array and have independently movable first and second prongs that are sized and dimensioned for insertion into first and second nostrils, respectively, of the neonate or the infant.