Research Hotspots and Frontiers of Robot-Assisted Thoracic Surgery: A Study Based on Bibliometric Analysis

1. Introduction
The Da Vinci robot was certified by the U.S. Food and Drug Administration (FDA) in 2000 and is currently the most advanced minimally invasive surgical robot system which integrates many emerging disciplines to achieve the development of minimally invasive, intelligent and digital surgical operations [1]. The operation of chest surgery applied to this system was approved by the U.S. FDA in 2001.