The application discloses a kind of anti-bending and anti-
biting closed tracheal
catheter and preparation method thereof, which can ensure the smoothness of upper
respiratory tract of patient by setting different density and uninterrupted reinforcing steel wire in built-in
pipe section, outer
pipe section and transition
pipe section.The closed tracheal
catheter is characterized by comprising
catheter connector, outer tube, scale line, inner tube, reinforcing steel wire, air bag,
insertion port, side air hole and inflation tube.The inner tube and the outer tube are of
open structure at both ends, the inner tube is placed in the outer tube, the center line of the inner tube coincides with the center line of the outer tube, the inner
diameter of the outer tube is larger than the outer
diameter of the inner tube, and the two ends of the inner tube and the outer tube are flush.The one end of the catheter connector is embedded in one end of the inner tube, and the inner
diameter of one end to one-half of the catheter connector is smaller than the inner diameter from one-half to the other end of the catheter connector.