Respiratory Ventilation Control Using Mechanical Power Feedback

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Solution Overview

Problem

Current respiratory support devices face challenges in accurately and timely adjusting ventilation parameters, leading to increased risk of lung injury due to subjective manual adjustments by medical staff.

Innovation Solution

A respiratory support device and control method that automatically adjusts ventilation parameters based on mechanical power calculations to ensure the mechanical power satisfies a preset condition, reducing the need for manual intervention and enhancing accuracy and timeliness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual adjustment of ventilation parameters is used, then medical staff can adjust parameters based on experience, but the accuracy and timeliness of adjustment decrease due to subjective factors and limited energy

Engineering Contradiction:

Improveaccuracy of ventilation parameter adjustmentVSAvoidmanual adjustment dependency

Core Design Contradiction:

Measurement precisionVSExtent of automation

Solution Approach 1:

The respiratory support device automatically monitors mechanical power and adjusts ventilation parameters without requiring continuous manual intervention. The system serves itself by calculating mechanical power from sensor data and autonomously optimizing ventilation settings to meet target mechanical power thresholds.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system continuously monitors mechanical power through sensors and uses this feedback to automatically adjust ventilation parameters. The closed-loop control ensures that ventilation settings are optimized in real-time based on actual mechanical power measurements, improving both accuracy and timeliness.

Inventive Principle:

Principle #23Feedback

2Loss of time

If manual adjustment of ventilation parameters is used, then medical staff can control ventilation settings, but the timeliness of adjustment decreases due to limited energy and subjective factors

Engineering Contradiction:

Improvetimeliness of ventilation parameter adjustmentVSAvoidoperational convenience

Core Design Contradiction:

Loss of timeVSEase of operation

Solution Approach 1:

The device automatically performs ventilation parameter adjustments without requiring continuous manual intervention. The system monitors mechanical power and autonomously optimizes ventilation settings, eliminating delays associated with manual assessment and adjustment.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system continuously monitors mechanical power and continuously adjusts ventilation parameters in real-time. This continuous automated control eliminates gaps in monitoring and adjustment that occur with intermittent manual intervention, ensuring timely responses to changing patient conditions.

Inventive Principle:

Principle #20Continuity of useful action

3Reliability

If automatic adjustment based on mechanical power is implemented, then accuracy and timeliness of ventilation parameter adjustment improve, but device complexity increases

Engineering Contradiction:

Improvereliability of ventilation controlVSAvoidcontrol system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system replaces manual mechanical adjustment with automated electronic control. Sensors measure mechanical power and the control system automatically adjusts ventilation parameters, substituting human judgment and manual operation with electronic measurement and control.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The control system integrates multiple functions including mechanical power calculation, parameter optimization, and automated adjustment within a single integrated system. This multi-functionality reduces the need for separate devices and simplifies the overall system architecture despite the advanced control capabilities.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP4272788B1Respiratory support device

Publication Date: 2026.02.04 SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD

Figure 1~3

AI summary

A control method for a respiratory support device, a respiratory support device, and a storage medium. The method comprises: obtaining a corresponding ventilation parameter configuration of a respiratory support device during ventilation for a patient, the ventilation parameter configuration comprising a set value of at least one ventilation parameter (S110); determining mechanical energy according to the ventilation parameter configuration, the mechanical energy being used for indicating energy of mechanical ventilation acting on the lung or the respiratory system (S 120); and adjusting the ventilation parameter configuration according to the mechanical energy, so that the mechanical energy determined after the adjustment meets a preset condition (S130). The method can solve the technical problems such as inconvenience in manual adjustment of ventilation parameters of respiratory support devices.