A new device for measuring and recording the forces applied during laryngoscopy

Area of Science:

• Medical Devices
• Anesthesiology
• Biomedical Engineering

Background:

• Laryngoscopy involves significant forces, primarily axial, that impact patient outcomes.
• Accurate measurement of these forces is crucial for understanding and potentially mitigating adverse events.

Purpose of the Study:

• To develop and validate a new method for evaluating axial forces exerted during laryngoscopy.
• To create a device capable of real-time, precise measurement of laryngoscopy forces.

Main Methods:

• Redesigned a laryngoscope handle incorporating a force-displacement transducer to measure axial force.
• Utilized linear ball bearings and a precision-ground shaft to minimize friction and ensure accurate force transmission.
• Integrated the device with a laptop for instantaneous data analysis, including peak force, mean force, and duration.

Main Results:

• The redesigned laryngoscope accurately measures the axial component of force during laryngoscopy.
• The system provides instantaneous analysis of force data, including peak and mean forces, and duration.
• Minimized friction ensures force measurement is independent of load application point on the blade.

Conclusions:

• The novel laryngoscope handle provides a reliable and accurate method for quantifying forces during laryngoscopy.
• This technology facilitates objective assessment of applied forces, potentially leading to improved techniques and patient safety.
• The system's data logging capabilities support comprehensive study and database creation for laryngoscopy research.