Plasma Gas Control System for Endoscopic Luminal Pressure Management
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Solution Overview
Problem
Existing plasma-based medical treatments face challenges in controlling luminal pressure during plasma dosage to a luminal space within tissue, which is crucial for maintaining a safe and effective treatment environment.
Innovation Solution
A system comprising a plasma inputs generator, a plasma probe, at least one evacuation conduit, a pressure transducer, and a gas control unit, which adjusts the rate of gas outflow to maintain the luminal pressure within a targeted range by controlling the ionization gas flow and evacuating gases from the luminal space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ionization gas flow is increased to maintain insufflated state, then plasma delivery is enabled, but luminal pressure increases causing tissue damage
Solution Approach 1:
The system continuously monitors luminal pressure via a pressure transducer and automatically adjusts the ionization gas flow rate through the plasma probe based on feedback from the pressure sensor, maintaining pressure within a safe range while ensuring plasma delivery
Solution Approach 2:
The system dynamically adjusts the ionization gas flow rate in real-time based on measured luminal pressure conditions, transitioning between different flow rates to maintain optimal pressure levels during plasma treatment
2Reliability
If ionization gas flow is increased to maintain insufflated state, then plasma delivery is enabled, but luminal pressure increases causing treatment environment degradation
Solution Approach 1:
The pressure transducer continuously monitors luminal pressure and the control system adjusts ionization gas flow rate in response to pressure deviations, maintaining stable pressure conditions throughout the plasma treatment
Solution Approach 2:
The system changes the flow rate parameter of ionization gas based on measured pressure conditions, adjusting this critical parameter to maintain luminal pressure within the desired range for stable treatment environment
3Stress or pressure
If gas outflow rate is increased to control pressure, then pressure is maintained within range, but plasma delivery consistency is affected
Solution Approach 1:
The system uses pressure feedback to modulate ionization gas flow rate, ensuring that pressure control actions do not disrupt plasma delivery by making adjustments that maintain both pressure stability and treatment consistency
Solution Approach 2:
The system dynamically balances pressure control and plasma delivery by continuously adjusting ionization gas flow based on real-time pressure measurements, ensuring both objectives are achieved simultaneously
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 system effectively maintains targeted luminal pressures, ensuring safe and consistent plasma delivery while preventing over- or under-pressure conditions that could damage tissues.
Implementation Method 1
Plasma may be produced by electric discharge through gas, causing gas atoms or molecules to be excited and ionize
Implementation Method 2
Plasma is a general term encompassing compositions of ionized gas, generally including free electrons and ions
Implementation Method 3
a pressure transducer, configured to indicate gaseous pressure in the luminal space
Implementation Method 4
a gas control unit, coupled to the at least one evacuation conduit, and configured to maintain the indicated gaseous pressure in the luminal space within a targeted range of pressures by adjusting a rate of gas outflow
Implementation Method 5
the gas control unit includes a pump and at least one valve; the pump operates to evacuate a gasses from the ionization gas flow mixed with gases from a second source bypassing the luminal space
Data Source
AI summary
An endoscopically operated plasma delivery device, in which ionization gas also suffices to provide insufflation pressure allowing the device to be maneuvered in a treated body lumen. To assist in maintaining pressure safety while avoiding interfering with the parameters of plasma generation, ionization gas evacuation is automatically adjusted in response to monitored pressure in the body lumen. In some embodiments, rapid control response is assisted by augmenting ionization gas throughput with a second gas source, and using valved switching of the proportions of gas evacuated from the two sources. In some embodiments, a faster but cruder adjustment mechanism is coupled with a slower but finer-adjusting mechanism, potentially increasing responsiveness while maintaining control of equilibrium pressures. In some embodiments, direct manual adjustment of insufflation pressure is accommodated within the operational parameters of automatically adjusting control, optionally with override.