Patent ID: 7083605

Claim:
A connector system for sterile connection comprising: a male type patient side connector including a tube connecting portion at a rear end portion thereof; a protective cap having a substantially cylindrical shape with a closed first end and being capable of connecting and disconnecting with/from a front end side of the patient side connector; an inner cap including a ring-shaped portion that supports a disinfectant-impregnated member therein, the inner cap being retained inside the protective cap in an initial state; and a female type circuit side connector having a double-cylinder structure in which an inner cylinder is fixed at one end portion of an outer cylinder, the inner cylinder including an internal end portion located inside the outer cylinder and an external end portion exposed outside the outer cylinder, wherein the external end portion of the inner cylinder of the circuit side connector is capable of connecting with a front end of a circuit in a container of dialysis solution, and a channel for solution is connected by fitting the outer cylinder of the circuit side connector with the patient side connector, when the protective cap is fitted with the patient side connector, the inner cap assumes a state of being retained at the front end side of the patient side connector, when the protective cap is removed from the patient side connector, the inner cap is detached from the protective cap because of a retaining force at the front end side of the patient side connector, when the patient side connector with the inner cap retained at the front end thereof is connected with the circuit side connector, the internal end portion of the inner cylinder penetrates through the disinfectant-impregnated member in the inner cap, so that the channel is opened, and when the connection between the patient side connector and the circuit side connector is released, the inner cap is retained inside the circuit side connector and is detached from the front end of the patient side connector.