PCA Pump Volume Tracking for Diversion Alerting

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Solution Overview

Problem

The challenge of accurately tracking medication delivery volumes using patient-controlled analgesia pumps, particularly in scenarios involving multiple syringes and different dose types, poses risks of medication abuse and diversion.

Innovation Solution

A tracking engine is integrated with the pump to monitor medication volumes across syringes and dose types, utilizing identifier tags and volume meters to maintain counters and generate alerts for anomalies, ensuring precise tracking and preventing diversion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If patient-controlled analgesia pumps are used to allow patient self-administration of medication, then patient control and convenience are improved, but the risk of medication abuse and diversion increases

Engineering Contradiction:
Improvepatient controlVSAvoidmedication abuse and diversion
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The system implements continuous feedback mechanisms by tracking the volume of medication delivered from each syringe and comparing it against expected values. The tracking engine monitors real-time medication delivery data and generates alerts when anomalies are detected, creating a closed-loop control system that prevents abuse while maintaining patient autonomy.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent introduces an intermediary tracking system between the patient-controlled pump and the medication reservoir. This intermediary layer includes volume meters, tracking engines, and alert generation components that mediate the medication delivery process, providing oversight without interfering with patient control of the actual administration.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If multiple syringes and dose types are used to meet diverse patient needs, then treatment versatility is improved, but tracking accuracy and complexity worsen

Engineering Contradiction:
Improvetreatment flexibilityVSAvoidtracking accuracy
Core Design Contradiction:
Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The system segments the tracking process by maintaining separate counters for each syringe and each dose type. The tracking engine processes volume data from individual syringes independently and categorizes deliveries by dose type, allowing precise tracking of each segment while aggregating data for overall monitoring. This segmentation enables the system to handle multiple syringes and dose types without compromising accuracy.

Inventive Principle:
Principle #1Segmentation

3Reliability

If real-time monitoring and alerting systems are implemented, then medication safety is improved, but device complexity increases

Engineering Contradiction:
Improvemedication safetyVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The tracking system operates autonomously by automatically receiving volume data from the pump, updating counters, determining delivered volumes, and generating alerts without requiring manual intervention. The system self-manages the entire tracking process from data collection to anomaly detection and alert generation, reducing operational complexity while maintaining high safety standards.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS12502478B2Medication tracking system
Publication Date: 2025.12.23 CAREFUSION 303 INC
  • US12502478B2 patent drawing
  • US12502478B2 patent drawing
  • US12502478B2 patent drawing

AI summary

A method may include receiving, from a volume meter at a pump configured to deliver medication to a patient, data indicative of a volume of a medication present in a syringe inserted in the pump. A first counter may be updated, based on the data, in response to the medication being delivered to the patient as a first dose type. A second counter may be updated, based on the data, in response to the medication being delivered to the patient as a second dose type. The volume of the medication delivered to the patient may be determined based on the first counter and/or the second counter. An electronic alert may be sent to a mobile device in response to one or more anomalies being present in the volume of the medication delivered to the patient. Related methods and articles of manufacture, including apparatuses and computer program products, are also disclosed.