Dynamic Occlusion Detection for Infusion Bolus False Alarms
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Solution Overview
Problem
Infusion pumps often generate false alarms due to changes in fluid infusion rates during bolus delivery, which can disrupt medical staff's attention and reduce the quality of patient care.
Innovation Solution
A patient care system with a pressure sensor and programming module that dynamically adapts occlusion detection features based on programmed bolus delivery to prevent false alarms by adjusting maximum allowed pressures and pressure decay rates during bolus delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If occlusion detection feature is activated to detect fluid line occlusions, then patient safety is improved, but false alarms are generated during bolus delivery
Solution Approach 1:
The occlusion detection algorithm dynamically adapts its parameters based on the infusion phase. During bolus delivery, the system temporarily modifies the pressure threshold and decay rate criteria to account for expected pressure changes, then restores standard detection parameters after bolus completion. This dynamic adjustment prevents false alarms while maintaining occlusion detection sensitivity during critical phases.
Solution Approach 2:
The system changes the detection parameters (pressure threshold and decay rate) based on the infusion phase. During bolus delivery, the maximum allowed pressure is increased and the pressure decay rate threshold is adjusted to prevent false occlusion detection. After bolus delivery completes, the parameters are restored to their original values for normal occlusion monitoring.
2Speed
If bolus delivery is performed to deliver rapid fluid doses, then patient treatment effectiveness is improved, but pressure spikes cause false occlusion alarms
Solution Approach 1:
The occlusion detection system dynamically adjusts its sensitivity during bolus delivery. When the system detects that a bolus is being administered, it temporarily modifies the pressure threshold and decay rate parameters to accommodate the expected pressure spike, then restores normal parameters after the bolus completes, ensuring accurate detection throughout the process.
Solution Approach 2:
The system prepares for potential false alarms by preemptively adjusting detection parameters before and during bolus delivery. By anticipating the pressure changes that will occur during rapid fluid administration, the system proactively modifies its detection criteria to prevent false occlusion alarms while maintaining the ability to detect actual occlusions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents false occlusion alarms during bolus delivery by dynamically managing pressure readings, ensuring accurate fluid delivery and minimizing interruptions in patient care.
Implementation Method 1
at least one pressure sensor positioned downstream the fluid infusion pump which can sense pressure along at least the downstream fluid line
Data Source
AI summary
The systems, methods and articles described herein are directed to at least one pressure sensor along a downstream fluid line which senses fluid pressure and assists an occlusion detection feature in determining the presence of occlusions in the downstream fluid line. In addition, the system can dynamically adapt the occlusion detection feature based on a delivery of fluid, such as a bolus, in order to prevent the system from creating a false alarm regarding an occlusion of the downstream fluid line.