Ventilation Pressure and Exhalation Control to Minimize Airway Energy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ventilation methods cause damage to airways and other organs due to increased pressure, leading to cardiac output reduction and organ dysfunction, as they primarily focus on inhalation without adequate control over exhalation, resulting in energy absorption and potential ventilator-induced lung injury (VILI).
Innovation Solution
A ventilation device and method that actively controls both inhalation and exhalation phases by setting pressure and volume profiles to minimize energy input, using a control device to manage fluid supply and discharge rates, and monitor compliance curves to ensure minimal energy absorption and prevent organ damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional ventilation methods supply gas at high pressure to ensure adequate oxygen delivery, then oxygen supply is improved, but airway damage and organ dysfunction worsen due to excessive pressure
Solution Approach 1:
The ventilation device employs periodic jet pulses instead of continuous high-pressure flow. The control device delivers oxygen in controlled intermittent bursts through the catheter, allowing the airways to relax between pulses while still achieving adequate oxygenation over the ventilation cycle. This periodic action reduces cumulative pressure damage while maintaining effective oxygen delivery.
Solution Approach 2:
The system dynamically adjusts ventilation parameters including pulse frequency, duration, and pressure levels based on patient response. The control device modifies these parameters in real-time to optimize oxygen delivery while keeping pressure-related harmful effects below damaging thresholds, resolving the contradiction between adequate oxygen supply and airway protection.
2Productivity
If ventilation focuses primarily on inhalation phase control, then inhalation efficiency is improved, but exhalation control deteriorates leading to energy absorption and lung injury
Solution Approach 1:
The ventilation system incorporates feedback mechanisms where the control device monitors patient respiratory mechanics and adjusts both inhalation and exhalation phases accordingly. By detecting patient effort and lung compliance during exhalation, the system can modulate jet delivery to minimize energy absorption and prevent ventilator-induced lung injury while maintaining inhalation efficiency.
Solution Approach 2:
The system provides continuous monitoring and control throughout the entire respiratory cycle including both inhalation and exhalation phases. The control device ensures useful action continues uninterrupted by adjusting jet parameters to support both phases, preventing energy loss during exhalation while maintaining inhalation effectiveness.
3Speed
If high pressure is applied during ventilation to overcome airway resistance, then gas delivery is improved, but cardiac output reduction worsens due to increased intrathoracic pressure
Solution Approach 1:
By delivering gas in periodic jet pulses rather than continuous high-pressure flow, the system achieves adequate gas delivery rates while allowing cardiac filling periods between pulses. This intermittent approach maintains mean arterial pressure and cardiac output while still providing sufficient oxygen delivery through the pulsed high-velocity jets.
Solution Approach 2:
The control device dynamically adjusts jet pressure and duration based on real-time hemodynamic and respiratory parameters. When cardiac output begins to decline, the system automatically reduces pressure or extends pulse intervals, maintaining gas delivery adequacy while protecting cardiac function. This dynamic adaptation resolves the contradiction between delivery speed and cardiac power.
Data Source
AI summary
The present invention relates to a plurality of ventilation devices, to ventilation devices having visualization apparatuses, and to methods for operating the ventilation devices. The intent is to minimize the energy input into the at least one airway of a patient as a result of the ventilation.