The invention discloses an air bag type fixing-free peritoneal drainage tube, and belongs to the technical field of peritoneal drainage. The drainage tube aims to solve the problems that an existing drainage tube is unstable in fixation, prone to blockage and infection, inconvenient in position adjustment and lack of buffer protection. According to the technical scheme, the device comprises a main drainage tube, a
silica gel corrugated tube section I, an inflation tube, a limiting air bag, a carambola-shaped air bag, an auxiliary drainage tube, an annular air bag, a
silica gel corrugated tube section II, a fixing ring, a matched disinfection
assembly, an adjusting
assembly and a braking
assembly;
silica gel corrugated tube sections are arranged in the main drainage tube and at one end, an annular air bag and a carambola-shaped air bag communicated with the annular air bag are arranged on the outer wall of the auxiliary drainage tube, a limiting air bag is arranged on the outer wall of the main drainage tube, and an inflation tube penetrates through the main drainage tube and is communicated with the air bag; a
medicine storage cavity, an annular
sponge, a dustproof ring and an inverted-cone-shaped liquid scraping lip are arranged in the fixing ring, and an adjusting assembly and a braking assembly are arranged on one side of the fixing ring. Double limiting, blocking prevention, active disinfection, accurate positioning and buffering protection are achieved, and the drainage device is mainly used for drainage of
effusion,
hematocele and pus in the
abdominal cavity.