A device for connecting first and second medical fluid flow systems, where the first medical fluid flow system includes a first connector connectable to a coupler and the second medical fluid flow system includes a second connector connectable to a coupler, the device comprising: a. a housing that is substantially non-transmissive of ultraviolet light; b. a linear movement carriage system positioned within the housing and including a first connector holder configured to hold the first connector, a second connector holder configured to hold the second connector and a coupler holder configured to hold the coupler, said coupler holder positioned substantially between the first and second connector holders (18a, 18b), wherein the first and second connector holders (18a, 18b) and the coupler holder are mounted within the housing, and wherein the first and second connector holders (18a, 18b) and the coupler holder being relatively moveable between: i) a separated configuration where the first and second connector holders (18a, 18b) and the coupler holder are located in relatively spaced apart positions so that first and second connectors (22a, 22b) held by the first and second connector holders (18a, 18b) are spaced apart from a coupler held by the coupler holder; and ii) a joined configuration where the first and second connector holders (18a, 18b) are positioned more closely to the coupler holder than when in the separated configuration so that the first and second connectors (22a, 22b) held by the first and second connector holders (18a, 18b) engage the coupler held by the coupler holder; c. an ultraviolet light source positioned in the housing so as to irradiate first and second connectors (22a, 22b) held by the first and second connector holders (18a, 18b) and a coupler held by the coupler holder when the carriage system is in the separated configuration; and d. a drive system including a first motor (74a, 74b) operatively connected to at least one of the first and second connector holders (18a, 18b) so as to transition the first and second connector holders (18a, 18b) and the coupler holder between the separated and the joined configurations. a. a housing that is substantially non-transmissive of ultraviolet light; b. a linear movement carriage system positioned within the housing and including a first connector holder configured to hold the first connector, a second connector holder configured to hold the second connector and a coupler holder configured to hold the coupler, said coupler holder positioned substantially between the first and second connector holders (18a, 18b), wherein the first and second connector holders (18a, 18b) and the coupler holder are mounted within the housing, and wherein the first and second connector holders (18a, 18b) and the coupler holder being relatively moveable between: i) a separated configuration where the first and second connector holders (18a, 18b) and the coupler holder are located in relatively spaced apart positions so that first and second connectors (22a, 22b) held by the first and second connector holders (18a, 18b) are spaced apart from a coupler held by the coupler holder; and ii) a joined configuration where the first and second connector holders (18a, 18b) are positioned more closely to the coupler holder than when in the separated configuration so that the first and second connectors (22a, 22b) held by the first and second connector holders (18a, 18b) engage the coupler held by the coupler holder; i) a separated configuration where the first and second connector holders (18a, 18b) and the coupler holder are located in relatively spaced apart positions so that first and second connectors (22a, 22b) held by the first and second connector holders (18a, 18b) are spaced apart from a coupler held by the coupler holder; and ii) a joined configuration where the first and second connector holders (18a, 18b) are positioned more closely to the coupler holder than when in the separated configuration so that the first and second connectors (22a, 22b) held by the first and second connector holders (18a, 18b) engage the coupler held by the coupler holder; c. an ultraviolet light source positioned in the housing so as to irradiate first and second connectors (22a, 22b) held by the first and second connector holders (18a, 18b) and a coupler held by the coupler holder when the carriage system is in the separated configuration; and d. a drive system including a first motor (74a, 74b) operatively connected to at least one of the first and second connector holders (18a, 18b) so as to transition the first and second connector holders (18a, 18b) and the coupler holder between the separated and the joined configurations.