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Fiber-Optic Intracranial Pressure Monitoring System Using Wi-Fi-An In Vivo Study
Erasmo Barros da Silva Junior1, Eder Eidi Hamasaki2, Hamzah Youssef Smaili1
1Department of Neurosurgery, Instituto de Neurologia de Curitiba, Curitiba, Brazil.
Neurosurgery
|December 13, 2022
Summary
A novel Wi-Fi fiber-optic device effectively monitors intracranial pressure (ICP) using a smartphone. This wireless system shows promise for continuous ICP surveillance in neurocritical care, offering a feasible alternative to traditional methods.
Area of Science:
- Biomedical Engineering
- Neuroscience
- Medical Devices
Background:
- Continuous invasive monitoring of intracranial pressure (ICP) is critical in neurocritical care for managing elevated ICP.
- Current standards include fluid-based systems and strain gauge microsensors, which have limitations.
- Wireless monitoring technologies have been explored to reduce invasiveness and complications.
Purpose of the Study:
- To introduce and evaluate a novel wireless fiber-optic device for continuous ICP monitoring.
- To assess the feasibility of using a smartphone for ICP data acquisition with the novel device.
- To validate the device's performance in a swine model.
Main Methods:
- Two ICP sensors, a wireless prototype and a wire-based reference, were implanted in a swine model.
- Continuous monitoring was conducted for 120 minutes, with jugular vein compression performed every 5 minutes to induce ICP changes.
- Data analysis involved comparing sensor readings across three experimental phases using Spearman correlation.
Main Results:
- Phase 1 demonstrated strong agreement between the wireless prototype and reference sensor (r = 0.829, P < .001).
- Phase 2 showed moderate-weak correlation (r = 0.262, P < .001) after sensor inversion.
- Phase 3, with sensors returned to original positions, showed moderately strong correlation (r = 0.669, P < .001).
Conclusions:
- A Wi-Fi-enabled ICP monitoring system was successfully demonstrated as comprehensive and feasible.
- The smartphone-based system showed adequate correlation with ICP variations.
- Ongoing development aims for further improvements and adaptations of the wireless ICP monitoring technology.
