Closing device for intubation channel of peritoneal drainage tube

The invention provides a sealing device for an intubation channel of an abdominal drainage tube. The sealing device comprises a plurality of fixing units, each fixing unit comprises a base component and a radial adjusting component; the base component comprises a horizontally-arranged bottom plate and a vertically-arranged wall plate. The wall plate is arranged on the upper side of the bottom plate; a guide through hole is formed in the wall plate; the first part of the radial adjusting component can be inserted into the guide through hole in a sliding manner, and the end part of the second part of the radial adjusting component is exposed on the second side of the wall plate; a notch is formed in the end part of the first part of the radial adjusting component; the plurality of fixing units are used for surrounding the drainage tube intubation channel and are fixed on tissues around the drainage tube intubation channel; and the annular lasso is in a tensioned state and hung on the notch at the end part of th