A syringe injection rate detector employing a dual Hall-effect sensor configuration

Area of Science:

• Biomedical Engineering
• Medical Device Technology

Background:

• Syringe injection rate is critical for patient outcomes, affecting pain and anesthesia efficacy.
• Current training methods lack objective feedback on injection speed.
• Complications can arise from uncontrolled injection rates in clinical practice.

Purpose of the Study:

• To develop and validate a cost-effective system for measuring syringe injection rates.
• To provide a training tool for healthcare professionals to practice controlled fluid injections.
• To enhance patient safety by reducing injection-related complications.

Main Methods:

• A modified syringe system utilizing two Hall-effect sensors and ring magnets was developed.
• Sensors were configured differentially to establish a linear voltage-volume relationship.
• A LabVIEW-based Virtual Instrument was used for real-time injection rate display.

Main Results:

• The developed system accurately measures the position of the syringe piston.
• A linear relationship between sensor output voltage and injected volume was achieved.
• Real-time injection rate display showed errors within acceptable limits for training.

Conclusions:

• The Hall-effect sensor-based system effectively measures syringe injection rates.
• The validated prototype demonstrates practical utility for training purposes.
• This technology offers a valuable tool for improving clinical injection practices and patient safety.