Alarm Suspend System with Parameter-Specific Duration Segmentation
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Solution Overview
Problem
Conventional pulse oximetry alarm suspend systems are inadequate for advanced monitors, as they employ a single duration for all parameters, which is insufficient for varying treatment times of different physiological parameters, leading to unnecessary reactivation of alarms during prolonged treatments for slow-response parameters.
Innovation Solution
An alarm suspend system that partitions parameters based on treatment time, allowing for adjustable suspend durations, with short durations for fast treatment parameters (e.g., SpO2, PR) and long durations for slow treatment parameters (e.g., HbMet, Hbt), and an override mechanism for parameters showing significant unit changes during the suspend period, with a pop-up window for user selection of appropriate suspend times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single alarm suspend duration is used for all parameters, then the system is simple to operate, but alarms reactivate unnecessarily during prolonged treatments for slow-response parameters
Solution Approach 1:
The alarm suspend system divides parameters into multiple groups (first group with first suspend duration, second group with second suspend duration) based on treatment time characteristics. This segmentation allows the system to apply appropriate suspend durations to different parameter types, preventing unnecessary alarm reactivations during prolonged treatments while maintaining operational simplicity through automated grouping.
Solution Approach 2:
The system changes the suspend duration parameter based on the parameter group being monitored. By automatically assigning different suspend durations (first duration for fast treatment parameters, second duration for slow treatment parameters) based on the parameter type, the system adapts the alarm behavior to match the clinical treatment timeline without requiring manual configuration.
2Duration of action of moving object
If alarm suspend duration is extended for slow treatment parameters, then alarm reactivation is minimized during prolonged treatment, but fast treatment parameters may experience delayed alarm response
Solution Approach 1:
The system segments parameters into fast treatment and slow treatment groups, assigning shorter suspend durations to fast treatment parameters (SpO2, PR) and longer suspend durations to slow treatment parameters (HbMet, Hbt). This ensures that fast treatment parameters maintain rapid alarm response while slow treatment parameters benefit from extended suspend periods during prolonged treatments.
Solution Approach 2:
Different suspend duration characteristics are applied to different parameter groups based on their specific treatment requirements. Fast treatment parameters receive aggressive alarm response with shorter suspend times, while slow treatment parameters receive patient-oriented alarm management with longer suspend times, optimizing the alarm behavior for each parameter type's clinical context.
Data Source
AI summary
An alarm suspend system utilizes an alarm trigger responsive to physiological parameters and corresponding limits on those parameters. The parameters are associated with both fast and slow treatment times corresponding to length of time it takes for a person to respond to medical treatment for out-of-limit parameter measurements. Audible and visual alarms respond to the alarm trigger. An alarm silence button is pressed to silence the audible alarm for a predetermined suspend time. The audible alarm is activated after the suspend time has lapsed. Longer suspend times are associated with slow treatment parameters and shorter suspend times are associated with fast treatment parameters.