Slip-Joint Adaptor Enabling Respiratory Monitoring in Tracheal Intubation Tube

Endotracheal intubation is frequently performed on critically ill patients or those under general anesthesia, but it carries risks of incorrect insertion into the esophagus or premature removal. To address these concerns, we propose an adaptor for tracheal intubation tube with integrated respiration monitoring functionality, enabled by a micro-electro mechanical systems (MEMS) airflow sensor packaged in a 3-D-printed housing. The adaptor shared the same dimensions as the conventional slip joint, ensuring seamless compatibility with standard intubation tubes. Basic characteristics measurement indicated a sufficient performance for human respiration monitoring. Feasibility tests using an artificial ventilator to simulate breathing demonstrated the system’s effectiveness. Furthermore, proof of concept via animal experiments also demonstrated successful respiration monitoring using the proposed system. The proposed device has a potential to enhance the safety and precision of endotracheal intubation by offering real-time airflow monitoring, reducing the risk of misplacement or premature extraction.