Abstract
Tracheal intubation is a standard medical practice to conduct airway management. A laryngoscope and a tracheal tube are often used in that procedure. It is only a compassionate treatment from effectors in order to prevent complications while using a laryngoscope. There are no objective guidelines of laryngoscope handling. When tracheal tube is inserted into the trachea to send air, it happens to be inserted into the esophagus by mistake. Incorrect intubation is very dangerous. In this paper a force sensor and a two-axis gyroscope sensor are attached to the laryngoscope for making objective evaluations, and alarm buzzers beep to warn wrong laryngoscope handling. A field test was performed using a training model, and the result was analyzed by principle component analysis to evaluate the degree of achievement and a personal task. In addition, acoustic signals from a tracheal tube were examined as to whether insertion was correct or incorrect. Adaptive filter was used to reduce noises in the signals for enhancing estimated precision.
