What's the name of the lens cable behind the arthroscope

The lens connection line behind the arthroscope is called the suction tube. According to the relevant public information, arthroscopy is a minimally invasive examination and treatment means, which is to open a small hole on the surface of the joint and put the equipment of the arthroscope into the joint to complete the inspection of the basic structure of the joint. Suction tube is a cylindrical cavity structure with a cylindrical suction head at the front end and a circular arc at the bottom. There are suction holes on the ring wall. It is generally used in combination with dental braces.