Research on removing characteristics of tracheal foreign bodies based on the baskets.

BACKGROUND

Foreign body aspiration is a prevalent respiratory disease in life. There is a lack of relevant research on removing foreign bodies. The process that foreign bodies are removing with baskets is very complicated and the relevant theoretical research is immature.

METHODS

The characteristics of the basket to remove foreign bodies in the trachea were analyzed. According to the geometric and force relationship between the basket, the foreign body and the trachea, the geometric relationship model and mechanical model are established, and validated by finite element analysis and experiments.

FINDINGS: The simulation results and experimental results show that the simulation curves of the contact force between the baskets and the foreign bodies, and the simulation curves of the contact force between the basket and the trachea are the same as the theoretical curve. Therefore, the geometric relationship model and mechanical model have reference values.

INTERPRETATION: These results can not only improve the quality of the operation, and shorten the operation time, but also provide a theoretical basis for automatic removal of foreign bodies.