A medical connector includes: a housing comprising a male connector attachment/detachment part, the housing defining a liquid flow path; and a valve that is vertically movable with respect to the housing between a closed position for closing the male connector attachment/detachment part, and an open position in which a flow path in a male connector communicates with the liquid flow path, by the valve being pressed down from the closed position by the male connector against a biasing force. The valve comprises a head portion that closes the male connector attachment/detachment part when the valve is at the closed position, and a body portion that is connected to a bottom end of the head portion and receives the biasing force. A Young's modulus of the body portion is larger than a Young's modulus of the head portion.

A selective coupling of a bladder and a bucket of a blood separation system includes mating an integrated connector of the bladder with a receiver disposed in the bucket without disassembling the bucket from the blood separation system. The receiver includes a locking receptacle and is mounted to a portion of the bucket. The integrated connector of the bladder selectively engages with the receiver. When engaged, the connector is locked to the receiver via a locking latch. To disengage the bladder from the bucket, a technician releases the locking latch and removes the bladder from the bucket without disassembling the bucket or the bladder. The engagement and disengagement is performed with a quick interconnect operation. The integrated connector and the receiver are valveless and provide an unimpeded flow path from a fluid source to the bladder.

A connector system for medical fluid includes a male connector and a female connector that have a closed configuration when detached from one another. The first end of the male connector is configured to mate with a first end of the female connector. When the male connector is coupled with the female connector, complementary structures engage to move seals away from ports in the male connector and the female connector, opening a fluid pathway through the connectors. The mating ends of the connectors are not exposed to the medical fluid when the connectors are coupled so that when the connectors are disconnected, the mating ends are substantially free of residual medical fluid.

A male connector is connectable to a female connector that includes an elastic valve body, and includes: a housing, a flow passage tubular member having an opening formed thereon, and a valve body. The housing includes a housing body, and a movable body that deforms or moves the valve body so as to change a configuration between a first configuration in which the opening of the flow passage tubular member is closed by the valve body, and a second configuration in which the opening of the flow passage tubular member is exposed from the valve body. The movable body includes a first locking portion configured to lock the female connector in the first configuration, and the housing body includes a second locking portion configured to lock the female connector in the second configuration.

A connector system for medical fluid includes a male connector and a female connector that have a closed configuration when detached from one another. The first end of the male connector is configured to mate with a first end of the female connector. When the male connector is coupled with the female connector, complementary structures engage to move seals away from ports in the male connector and the female connector, opening a fluid pathway through the connectors. The mating ends of the connectors are not exposed to the medical fluid when the connectors are coupled so that when the connectors are disconnected, the mating ends are substantially free of residual medical fluid.

An automatically bidirectionally-sealable breakaway intra-medical tubing connector assembly for use with first and second luer-actuated valve assemblies connected to opposite intermediate ends of a medical tube, the assembly comprising a first and second snap-fit fittings adapted to be connected to the first and the second luer-actuated valve assemblies respectively, the snap-fit fittings being arranged for tensile force responsive disconnectable snap fit connection with each other; and a connector element, having first and second ends and defining a fluid flow path therethrough, the connect or element being at least partially located within the snap-fit fittings, the snap-fit fittings and the connector element being configured upon connection of the luer-actuated valve assemblies thereto for opening of the luer-actuated valve assemblies and upon disconnection of the snap-fit fittings from each other for automatic closing of the luer actuated valve assemblies.

A pressure relief valve for a reservoir has a main body with a central chamber defining an outer radial seat, a positive-pressure port with an inner radial seat, and a negative-pressure port comprising an internal passage spanning the outer seat. The sealing disk has an anchor body retained in the central chamber and a flexible diaphragm biased against the outer seat. An axial passage in the anchor body couples the central chamber to ambient atmospheric pressure. The sealing ball is biased against the inner seat. When a pressure inside the reservoir exceeds ambient by a positive-pressure threshold, then the sealing ball lifts off the inner radial seat to exhaust a gas through the positive-pressure port. When the pressure inside the reservoir is below ambient by a negative-pressure threshold, then the diaphragm is lifted off the outer seat to intake atmospheric gas into the reservoir.

Some embodiments disclosed herein relate to a medical connector having a backflow resistance module configured to prevent fluid from being drawn into the connector when a backflow inducing event occurs. In some embodiments, the backflow resistance module can include a variable-volume chamber configured to change in volume in response to a backflow-inducing event and a check valve configured to resist backflow. In some embodiments, the medical connector can include a fluid diverter configured to direct fluid flowing through the medical connector into the variable volume chamber to prevent fluid stagnation therein. In some embodiments, the medical connector includes a body member, a base member, a seal member, a support member, and a valve member.

A needleless injection port assembly includes first and second body parts and a resilient barrier received within the body. A cannula attached to the first body part is received within an internal cavity of the resilient barrier. The resilient barrier is moveable between a less axially compressed first position in which fluid flow through the injection port assembly is prevented and a more axially compressed second position in which fluid flow through the assembly is allowed. An interference fit is provided between the resilient barrier and the cannula to seal against fluid flow through the cannula when the resilient barrier is in the first position. The cannula has an internal fluid passageway with a non-circular cross section providing increased fluid flow.

An exemplary syringe adapter for coupling with a syringe may include a housing. A needle-free connector may be disposed in the housing. A communication member may be in slidable engagement with the housing. The communication member may be slidable, with respect to the housing, between an unactuated state and an actuated state of the syringe adapter. A cannula may extend from the communication. In the unactuated state, the cannula may be retracted within the needle-free connector. In the actuated state, the cannula may protrude through and axially beyond the needle-free connector.