Disclosed is an air cutting type bridge frame for controlling the balanced ventilation of a single-cavity lung isolation catheter, relating to the technical field of medical appliances. The air cutting type bridge frame for controlling the balanced ventilation of a single-cavity lung isolation catheter is used for solving the problems of a low balanced ventilation efficiency of the left and right lungs and poor safety during thoracic surgery by using existing lung isolation catheters and for replacing the existing lung isolation catheters. The geometric distribution of apertures in the catheter wall of the air cutting type bridge frame for controlling the balanced ventilation of a single-cavity lung isolation catheter is utilized for solving the risk caused by the easy bending of existing lung isolation catheters； and by means of the geometric distribution of the apertures, the support strength of a second aperture region (11) is enhanced. The air cutting type bridge frame for controlling the balanced ventilation of a single-cavity lung isolation catheter comprises a main pipe tracheal catheter (1) and a bronchial catheter (2) communicating with one end of the main pipe tracheal catheter (1)； the tail end of the bronchial catheter (2) is provided with a first opening (21)； the second aperture region (11) comprising at least two apertures is arranged on the lower end side wall of the main pipe tracheal catheter (1)； and the second aperture region (11) is in the same or different transverse tangential plane or longitudinal tangential plane distribution in the three-dimensional space formed by the main pipe tracheal catheter (1).L'invention concerne un cadre pont de type coupe-air permettant de réguler la ventilation équilibrée d'un cathéter d'isolement de poumon à une seule cavité, se rapportant au domaine technique des appareils médicaux. Le cadre pont de type coupe-air permettant de réguler la ventilation équilibrée d'un cathéter d'isolation de poumon à une seule ca
