Disclosed is a first medical connector configured to be removably attachable with a second medical connector to permit fluid flow between the first and second medical connectors. The first medical connector can include a first region with a luer-compatible connection portion being configured to engage luer-compatible medical devices, and a second region comprising a resilient seal and a first luer-incompatible connection portion. The first luer-incompatible connection portion can inhibit engagement with luer-compatible medical devices and permit engagement with a second luer-incompatible connection portion of the second medical connector. In some embodiments, the first region of the first medical connector does not rotate with respect to the second region of the first medical connector in an initial stage of use, but the first medical connector is configured to transition from the initial stage of use to a subsequent stage of use in which the first region of the first medical connector and the second region of the first medical connector can be rotated with respect to each other.

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 female syringe barrel is disclosed, which includes two protrusions provided on a cylindrical portion. A length (Lp) of the protrusion along a direction, perpendicular to an axis of the cylindrical portion and perpendicular to a direction in which the protrusion protrudes from the cylindrical portion, is 2.0 mm to 4.5 mm. A width of the protrusion along an axial direction of the cylindrical portion is 1.0 mm to 2.1 mm. Each of the two protrusions has an inclined surface, which opposes a trailing flank of the screw when the two protrusions are engaged into the screw of the lock adapter, in an end portion close to the barrel body.

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 device is provided for shielding a fluid access port structure that is located along tubing that is part of an intravenous (IV) medication delivery system and is configured to permit injection of a fluid into the tubing. The device includes a body having a hollow interior and a first opening formed therein for receiving the fluid access port structure such that a side wall of the body surrounds and extends above the fluid access port structure. The body also includes a second opening through which a fluid delivery member can be inserted to allow mating between the fluid delivery member and the fluid access port structure for delivering the fluid into the tubing.

Anti-snagging components for use in infusion sets are provided. The anti-snagging component includes a sliding surface that guides an infusion set component past an obstruction when the infusion set is moved during manufacture or use. An anti-snagging structure may be integrally formed as a portion of an infusion set component or the anti-snagging structure may be a separate component that connects or attaches to an infusion set component. Some anti-snagging structures include a covering portion to cover a needleless connector and a tail portion to connect to a length of tubing. The covering portion may include an anti-microbial coating.

A connecting structure for medical use includes a male assembly (1) and a female connector (2) having a cylindrical configuration. The male assembly (1) includes a male connector (10) having a cylindrical configuration and a threadedly engageable cylinder (20) rotatably coupled to the male connector (10). A male luer portion (11) of the male connector (10) and a female luer portion (2a) of the female connector (2) are joined by turning the threadedly engageable cylinder (20) in a tightening direction when a female screw (21a) of the threadedly engageable cylinder (20) and an engageable protrusion (2c) of the female connector (2) are threadedly engaged with each other. The connecting structure for medical use further includes a loosening prevention mechanism (30) that prohibits rotation of the threadedly engageable cylinder (20) in a loosening direction with respect to the male connector (10) when the male luer portion (11) and the female luer portion (2a) are joined. The loosening prevention mechanism (30) includes ratchet teeth (31) formed in an inner periphery of the threadedly engageable cylinder (20), an elastic projection (32) formed in the male connector (10) and an engageable claw (33) protruded from a free end of the elastic projection (32) and engageable with the ratchet teeth.

A luer lock adaptor including a housing defining an axis, an internal luer lock element having a threading, the internal luer lock element being located internally of the housing and being rotatably mounted thereto for rotation about the axis relative to the housing, in a manner which permits rotation of the luer lock element relative to the housing in a first rotation direction about the axis and limits rotation of the luer lock element relative to the housing in a second rotation direction about the axis, opposite to the first rotation direction, whereby the location of the internal luer lock element internally of the housing prevents manual access to the internal luer lock element for limiting rotation thereof in the first rotation direction.

A slip luer assembly includes a hub member and a latch member coupled to the hub member. The hub member includes an outer hub surface, and inner hub surface and a window surface. The window surface defines a window extending from the outer hub surface to the inner hub surface. The latch member includes at least one blade. The latch member is configured to be actuated between a first position and a second position. In the first position, the at least one blade is not positioned within the window of the hub member. In the second position, the at least one blade is positioned at least partially within the window of the hub member.

A medical connector according to one embodiment of the present invention is provided with: a valve body which has a slit formed therein; a cylindrical outer housing which houses the valve body in the cylindrical shape thereof and retains the valve body therein; and a cylindrical inner housing which is inserted into the cylindrical shape of the outer housing so as to support an under surface of the valve body. A joint is formed between the valve body and the outer housing. The joint is positioned radially outward of the connector beyond the upper edge of the inner housing.