Abstract: A cap for a connector in a medical tool, which cap comprises a blind cylindrical body provided on the bottom part thereof with means for closing an open end of a connector member to be capped and an air permeable filter member disposed in said closing means, and a medical tool possessing a tube closed at one end thereof and provided at the other end thereof with a connector member and having an open end of said connector member covered with the cap.

Abstract: A plastic medical container which contains an infusion solution, such as a blood bag, is wrapped and sealed together with a deoxidizer in a flexible bag having retarded permeability to a gas and stream. The plastic medical container is in tight contact with and fixed by the flexible bag while being kept at a reduced pressure. The medical container is not moved in the wrapping bag during loading, and a tube connected to the medical container is not twisted. A moisture-absorbing body may be interposed between the deoxidizer and the medical container.

Abstract: Peritoneal dialysis uses a system comprising (A) a first tube having a first connector attached thereto at one end and (B) a second tube connected to a dialysis fluid bag and having a second connector attached thereto at a free end, both the first and second tubes requiring to be in a sterile condition when connected. A medical container may be replaced by connecting the first connector to the second connector to provide fluid communication between the first and second tubes for allowing dialysis to be carried out, sealing the second tube at one or more positions at the end of dialysis, and cutting the second tube at a position nearer to the medical container with respect to the seal. The suspending section of the second tube with the second connector kept connected to the first connector serves as an antibacterial protective accessary for maintaining the connector connection in a sterile condition.