Respiratory Device Control System Adaptive Parameter Selection
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Solution Overview
Problem
Existing respiratory devices for artificial respiration lack precision in tailoring respiratory parameters to individual patient needs, relying on standardized formulas like Otis and Mead that may not accurately account for varying respiratory resistances, potentially leading to inadequate ventilation.
Innovation Solution
A respiratory device with a control system that determines respiratory operating parameters based on a patient's specific resistance data value, selecting between predetermined data relationships to optimize tidal volume and frequency according to the patient's resistance, allowing for real-time adjustments to match changing respiratory requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If standardized formulas (Otis and Mead) are used to determine respiratory parameters, then device complexity is reduced and ease of operation is improved, but manufacturing precision and measurement precision of respiratory parameters deteriorate
Solution Approach 1:
The system dynamically selects between different data relationships (formulas) based on real-time resistance data values. The control device automatically switches between the Otis formula, Mead formula, or other predetermined data relationships depending on the measured resistance, making the system adaptive rather than static. This resolves the contradiction by maintaining ease of operation through automation while achieving precision through dynamic adaptation to patient conditions.
Solution Approach 2:
The system changes the mathematical model parameters (data relationships) based on the measured resistance data values. When resistance values fall within certain ranges, different formulas are selected to calculate respiratory parameters. This parameter adaptation allows the system to maintain operational simplicity while achieving precise, individualized ventilation parameters matched to the patient's actual respiratory mechanics.
2Adaptability or versatility
If standardized formulas are used for all patients, then device complexity is minimized, but adaptability to individual patient needs deteriorates
Solution Approach 1:
The control device automatically adapts the calculation model based on measured resistance values without requiring manual intervention. The system dynamically adjusts which data relationship is used based on real-time patient data, achieving high adaptability to individual patient needs while maintaining automated operation that masks the underlying complexity from the user.
Solution Approach 2:
The system performs self-adjustment by automatically selecting appropriate data relationships based on measured resistance values. The control device autonomously determines which formula to use without requiring operator expertise in respiratory mechanics, allowing the system to serve itself in optimizing ventilation parameters while adapting to each patient's unique characteristics.
3Measurement precision
If resistance data values are measured and used to select data relationships, then measurement precision and adaptability are improved, but device complexity and difficulty of detecting and measuring increase
Solution Approach 1:
The control device integrates multiple functions: it measures resistance data values, selects appropriate data relationships based on those values, and calculates respiratory parameters all within a single automated system. This multi-functionality consolidates the complexity into a unified control algorithm rather than separate manual steps, achieving high measurement precision and adaptability while presenting a streamlined interface to the user.
Data Source
AI summary
A control system of a respiratory device for the at least supportive-partial artificial respiration of patients, in particular human patients, comprising a respiratory gas conduit arrangement, a pressure changing arrangement for changing the pressure of respiratory gas in the respiratory gas conduit arrangement during the respiratory operation of the respiratory device, and the control system for controlling the respiratory operation of the respiratory device. The control system has a data input for transmitting operational or/and patient data to the control system. The control system is configured to determine a respiratory operating parameter for the operation of the respiratory device selectively by means of a predetermined first data relationship or by means of a predetermined second data relationship that is different from the first data relationship.