Ventilation Detection Using Airway Pressure and Flow Feedback

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Solution Overview

Problem

Existing ventilation setups in mechanical ventilation systems often fail to synchronize with patient needs, leading to man-machine counteraction and ventilation leakage, which affects therapeutic efficacy.

Innovation Solution

A ventilation detection device and method that monitors respiratory parameters such as airway pressure and flow to identify man-machine counteraction and leakage, analyzing changes in these parameters to adjust ventilation settings accordingly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If ventilation parameters are set according to standard protocols, then the ventilation apparatus can operate automatically, but man-machine counteraction and ventilation leakage occur when patient needs change

Engineering Contradiction:

Improveautomatic ventilation operationVSAvoidventilation synchronization with patient needs

Core Design Contradiction:

Extent of automationVSReliability

Solution Approach 1:

The system continuously monitors respiratory parameters (airway pressure, airway flow, respiratory rate) and uses this feedback to detect man-machine counteraction and ventilation leakage events, automatically adjusting ventilation parameters to maintain synchronization with patient needs

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The ventilation apparatus transitions from static standard protocols to dynamic real-time adjustment based on detected patient respiratory patterns and events, allowing automatic adaptation to changing patient needs while maintaining synchronization

Inventive Principle:

Principle #15Dynamics

2Reliability

If ventilation parameters are adjusted to meet changing patient needs, then therapeutic effect improves, but system complexity increases

Engineering Contradiction:

Improveventilation synchronization with patient needsVSAvoidparameter adjustment system

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system performs self-diagnosis and self-adjustment by automatically detecting ventilation events and modifying parameters without requiring manual intervention, reducing operational complexity while maintaining high reliability

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

Real-time monitoring of respiratory parameters provides continuous feedback that triggers automatic parameter adjustments, simplifying the control process while ensuring therapeutic effectiveness

Inventive Principle:

Principle #23Feedback

Data Source

PatentEP3834870B1Ventilation detection device, ventilation apparatus, and computer program for ventilation detection

Publication Date: 2025.11.12 SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD

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AI summary

A ventilation detection method applied to a ventilation apparatus. The method may include: monitoring respiratory parameters during mechanical ventilation of a patient by using a ventilation apparatus, the respiratory parameters at least comprising one of airway pressure and airway flow(S 101); and using changes in the respiratory parameters to identify whether man-machine counteraction or ventilation leakage has occurred (S102).