Adaptive Breathing Apparatus Pressure Control
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Solution Overview
Problem
Existing breathing apparatuses for spontaneously breathing patients often have fixed pressure rise and fall times, which can be uncomfortable and inefficient, as they do not adequately tailor the ventilation pressure to the patient's instantaneous needs during inhalation and exhalation efforts.
Innovation Solution
A breathing apparatus equipped with pressure and/or flow sensors and a control unit that monitors changes in pressure and flow to determine a suitable rate of change in applied pressure, adjusting it in real-time based on the patient's effort to inhale or exhale, thereby providing tailored support ventilation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed pressure rise time is used in breathing apparatus, then device complexity is reduced and ease of operation is improved, but patient comfort and treatment efficiency deteriorate due to inability to adapt to instantaneous respiratory needs
Solution Approach 1:
The patent implements dynamic pressure control by continuously monitoring patient respiratory effort and adjusting pressure rise time in real-time based on detected inhalation or exhalation efforts, transforming the fixed pressure profile into an adaptive dynamic system that responds to patient needs
Solution Approach 2:
The system employs feedback mechanisms by monitoring pressure and flow measurements during the respiratory cycle, detecting patient effort through changes in these parameters, and using this feedback to automatically adjust the pressure rise time to match patient requirements
2Adaptability or versatility
If pressure rise time is automatically controlled based on monitored pressure and flow changes, then adaptability to patient needs is improved, but device complexity increases due to additional sensors and control algorithms
Solution Approach 1:
The system achieves self-service by automatically detecting patient respiratory effort through monitored pressure and flow changes and autonomously adjusting pressure rise time without requiring external intervention or complex operator programming, allowing the device to adapt itself to patient needs
Solution Approach 2:
The control unit performs multiple functions by simultaneously monitoring pressure, monitoring flow, detecting patient effort, determining respiratory phase, and adjusting pressure parameters, consolidating these functions into a single integrated control system rather than separate dedicated components
3Ease of operation
If pressure is adjusted in real-time based on patient effort detection, then patient comfort is improved, but response time and measurement precision requirements increase
Solution Approach 1:
The system performs preliminary detection of patient effort by continuously monitoring pressure and flow parameters before making pressure adjustments, allowing it to anticipate and respond to patient respiratory needs proactively rather than reactively
Data Source
AI summary
In a method and breathing apparatus for providing support ventilation to a spontaneously breathing patient a pressure and/or a flow is monitored based on pressure and/or flow measurements, and efforts to inhale or exhale by the patient are detected based on changes in the monitored pressure and/or flow. When a change in the monitored pressure and/or flow indicating an effort to inhale or exhale is detected, the rate of that change is determined and used to calculate a suitable rate of change of pressure applied to the airways of the patient. By changing the applied pressure in accordance with the so determined suitable rate of change, the pressure rise time during inspiration and/or the pressure fall time during expiration can be adjusted to the needs of the patient to ensure efficient and comfortable ventilation.