A system for facilitating instrument delivery through a peripheral intravenous catheter may include a catheter adapter having a proximal end, a distal end, and a lumen extending there through. The catheter adapter may include a side port. The system may include an extension tube extending from the side port. The system may include a blood control valve disposed in the lumen of the catheter adapter. The system may include a peripheral intravenous catheter extending distally from the catheter adapter.

A self activating vent cap configured to be operably coupled to a needleless connector and automatically shifted relative to the needleless connector from the first, storage position to a second, activated position upon rotation of the vent cap relative to the needleless connector. The self activating vent cap including a threaded portion, an activation portion and a biasing mechanism, wherein shifting of the activation portion to the second, activated position is selectively precluded by the interference of at least one ridge of the threaded portion with a ledge of the activation portion.

In an infusion set, a spike or a connector for connection with an intravenous drip needle is covered by a cap, arranged at which there is an opening configured so as to not allow passage therethrough of solid or liquid but so as to allow passage therethrough of gas at the interior of the cap, a hydrophobic filter being arranged at a location inward from where the tip of the spike or the connector for connection with an intravenous drip needle is inserted at the interior of the cap by way of an insertion port, and a lid at the exterior of said opening for closing said opening. A three-way stopcock having a primary tubing downstream branch connector equipped with a mechanism that connects in such fashion as to permit rotation about primary tubing as axis is provided.

A medical connector that allows ventilation of vapor used in vapor sterilization and has an internal flow route that is tightly closable without using any separate clamping device. A medical connector includes a body having an internal flow route through which liquid flowing in one flow route is allowed to flow into an other flow route, proximal portions included in the body and having respective one-side connection ports at which the internal flow route is connectable to the one flow route, a distal portion included in the body and having an other-side connection port at which the internal flow route is connectable to the other flow route, one-side lid portions with which the one-side connection ports are closable, and an other-side lid portion whose state is switchable between a closing state in which the other-side lid portion closes the other-side connection port such that the internal flow route is tightly closed and a ventilating state in which the other-side lid portion covers the other-side connection port such that ventilation is allowed.

A syringe having an enteral collar with a vent is disclosed. The syringe may also include a plug which reversibly covers the vent. Other embodiments relate to the use of the syringe. The vent allows fluid within the region between the enteral collar and the tip to be removed.

A patency indicator for use with an arterial line may include a body, which may include a first end and a second end opposite the first end. The first end may include a luer adapter. The second end may be closed. The patency indicator may include a transparent portion between the first end and the second end. The patency indicator may include an air vent disposed within the body between the first end and the second end. The air vent may be configured to pass air and not blood. In response to arterial blood entering the lumen at the first end, an air pocket is configured to form between the second end and the air vent, and the transparent portion is configured to align with a leading edge of the arterial blood for visualization of the leading edge of the arterial blood.

A method may include priming a catheter system. The catheter system may include a catheter adapter, a catheter, and an extension tube. The catheter system may also include a Y-adapter, which may include first and second arms. A distal end of the Y-adapter may be coupled to the extension tube. The catheter system may further include a vent cap, which may be coupled to the second arm. Priming the catheter system may include attaching an IV line to the first arm and delivering saline through the IV line to the catheter system such that the saline exits a distal tip of the catheter and clamping the IV line via a roller clamp on the IV line. The method may also include actuating the vent cap after priming the catheter system. The method may further include inserting the catheter into a vein of a patient after actuating the vent cap.

A solution is proposed for closing a mouth (125) of a container (110) of a liquid (105). A corresponding closure (135) comprises a cap (205) having fixing means (315) for fixing the cap (205) to the container (110), a delivery port (321) for delivering the liquid (105) from the container (110), a valve member (215) in a closed position wherein the valve member (215) closes the delivery port (321), a cap suction conduit (339) for suctioning air into the container (110) during the delivering of the liquid (105) and a connector (327) for connecting to a delivery device (805) of the liquid (105), the connector (327) being in fluid communication with the delivery port (321), a slider (220) slidebly coupled with the cap (205), the slider (220) having a slider suction conduit (440) for suctioning the air into the container (110) during the delivering of the liquid (105) slidebly coupled with the cap suction conduit (339), and a frangible element (345) closing the cap suction conduit (339) or the slider suction conduit (440), wherein the closure (135) is configured to cause the delivery device (805) during the connecting thereof to move inwards the container (110), in a fixed condition wherein the closure (135) is fixed to the container (110), and thus moving the valve member (215) inwards the container to an open position, wherein the valve member (215) opens the delivery port (321), and moving the slider (220) inwards the container to break the frangible element (345), thereby putting in fluid communication the slider suction conduit (440) with the cap suction conduit (339).

A device for preventing contamination of a positive-pressure connector (6) of an indwelling needle and a method based on same. The device comprises a shell (1), a connecting port (3) fixedly connected to the shell (1) and used for connecting to the positive-pressure connector (6), an air pressure balance hole (5) disposed opposite to the connecting port (3) and provided on the shell (1), and a filtering membrane (2) provided between the air pressure balance hole (5) and the connecting port (3). The device is simple in structure, adopts a structural design of the filtering membrane (2), can filter microorganisms, bacteria, viruses, dusts, and particulate pollution sources, and is used during indwelling of infusion intervals to prevent the positive-pressure connector (6) from being exposed to the air and maintain the aseptic state and positive-pressure condition of the positive-pressure connector (6) during indwelling.

A connector for medical fluid vessels includes a fluid-seal fitting such as a male plug defining a lumen and mating with a cooperating connector, a mechanical fastener such as a screw thread for mating with the cooperating connector, and an outer housing positioned around the plug to form an annular space. Optionally, a cap can be provided with a fluid-seal fitting such as a male plug for mating with the lumen of the connector. The connector includes one or more vent openings for drainage and air-drying of any residual fluid in the annular space when capped, as well as for breaking a vacuum to prevent fluid backflow and thus ensure more accurate dosing. In some embodiments, the vent openings are provided in the outer housing. And in some embodiments, the vent openings are provided in the cap.