External fixing bag for hemodialysis venous indwelling catheter

The utility model belongs to the technical field of medical instruments, and particularly relates to a hemodialysis venous indwelling catheter external fixing bag which comprises a bag body, a catheter placing support is arranged on the inner side face of the bag body, a silica gel patch is arranged on the front end face of the bag body, vent holes are formed in the outer surface of the silica gelpatch, and a catheter groove is formed in the inner side face of the catheter placing support. Velcro tapes are arranged on the inner side surface of the bag and the lower end surface of the indwelling catheter support, a tightening lock catch is arranged on the outer surface of the sealing rope, a spring is arranged on the inner side surface of the tightening lock catch, and an elastic button isarranged on the upper end surface of the spring. According to the utility model, the silica gel paster and the air vents are arranged, so that the defect of skin adverse reaction easily caused by fixing the adhesive tape is e