Respiratory Flow Therapy WOB Detection from Nasal Pressure Variation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing respiratory apparatuses lack the capability to accurately determine work of breathing (WOB) during respiratory therapy, which is crucial for effective patient care and therapy adjustment.
Innovation Solution
A respiratory apparatus equipped with sensors and a controller that analyze flow parameter data to determine nasal pressure variation, enabling the calculation of WOB indicators and initiating appropriate actions based on these indicators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing respiratory apparatuses are used without WOB determination capability, then the device complexity is low, but the measurement precision of work of breathing is insufficient
Solution Approach 1:
The patent replaces direct mechanical pressure measurement at the patient interface with a computational approach. The controller calculates nasal pressure variations by analyzing flow parameter data from existing flow sensors, using mathematical models to derive pressure information without adding mechanical pressure sensors at the patient interface. This substitution maintains measurement precision while avoiding the complexity of additional mechanical components.
Solution Approach 2:
The patent introduces flow parameter data as an intermediary measurement. Instead of directly measuring nasal pressure, the system measures flow parameters (which are easier to obtain with existing sensors) and uses these as intermediaries to calculate the work of breathing. The flow parameter data serves as a mediator that bridges the gap between available sensor capabilities and the desired WOB measurement.
2Reliability
If no WOB indicator is determined, then the device complexity is low, but the reliability of patient care monitoring is insufficient
Solution Approach 1:
The patent implements a feedback mechanism where the controller continuously determines WOB indicators from flow parameter data and uses this information to monitor patient status. The system processes flow data in real-time, calculates nasal pressure variations, determines WOB indicators, and can trigger alerts or notifications when abnormal conditions are detected. This feedback loop enhances patient care reliability by providing continuous monitoring without requiring complex additional hardware.
3Productivity
If real-time WOB determination is implemented, then the productivity of therapy adjustment is improved, but the use of energy for data processing increases
Solution Approach 1:
The patent applies partial action by selectively processing flow parameter data only when needed for WOB calculation. The controller determines nasal pressure variations and WOB indicators based on available flow data, processing information at the minimum necessary rate to provide meaningful real-time monitoring. This approach enables timely therapy adjustment while minimizing unnecessary computational energy consumption.
Data Source
AI summary
A respiratory apparatus configured to provide a flow of gases to a user for respiratory therapy. The apparatus comprises a flow generator configured to generate the flow of gases for the user and a sensor or sensors that are configured to generate flow parameter data indicative or representative of the flow of gases. A controller is configured to receive the flow parameter data, determine a nasal pressure variation value indicative of the user's average nasal pressure based at least partly on the received flow parameter data, determine a work of breathing (WOB) indicator based at least partly on the determined nasal pressure variation value, and initiate one or more actions based at least partly on the determined WOB indicator.