Abstract: A tube connector to connect a medical tube to a medical device includes a first member into which the medical tube is inserted, a second member that is screwed into the first member; and an O-ring that is housed in the first member, deforms with screwing of the second member into the first member, and fixes the medical tube by deformation, wherein the first member includes a seating portion to seat the O-ring, wherein the second member includes a pressing portion to press the O-ring seated on the seating portion, wherein a pressing surface of the pressing portion is parallel to a shear direction, and wherein a seating surface of the seating portion is in an inclined shape leaning from a plane parallel to the pressing surface toward the medical tube.

Abstract: A tube connector to connect a medical tube to a medical device includes a first member into which the medical tube is inserted, a second member that is screwed into the first member; and an O-ring that is housed in the first member, deforms with screwing of the second member into the first member, and fixes the medical tube by deformation, wherein the second member includes a pressing portion that presses the O-ring with the screwing, and wherein the pressing portion includes a plurality of pressing pieces arranged with predetermined spaces in a circumferential direction.

Abstract: A tube connector to connect a medical tube to a medical device includes a first member into which the medical tube is inserted, a second member that is screwed into the first member; and a seal ring that is housed in the first member, deforms with screwing of the second member into the first member, and fixes the medical tube by deformation, wherein, of the first member and the second member, at least the second member has light-transmission properties.

Abstract: A tube connector to connect a medical tube to a medical device includes a first member into which the medical tube is inserted, a second member that is screwed into the first member, and a seal ring that is housed in the first member, deforms with screwing of the second member into the first member, and fixes the medical tube by deformation, wherein screwing grip portions for screwing the second member into the first member are formed on an outer circumferential surface of the first member and an outer circumferential surface of the second member at positions away from ends on a side close to each other.

Abstract: A tube connector to connect a medical tube to a medical device is provided with a first member into which the medical tube is inserted, a second member that is screwed into the first member, and a seal ring that is housed in the first member, deforms with screwing of the second member into the first member, and fixes the medical tube by the deformation, wherein one of the first member and the second member comprises an engagement raised portion, and wherein the other of the first member and the second member includes a retaining portion that mechanically stops the engagement raised portion in a direction of separation of the second member from the first member.