Provided is a medication dispenser configured to discharge a liquid state medication stored therein by a pumping operation in a predetermined amount in a drop state and prevent a noise occurrence during medication discharge, and having a bacteria infiltration prevention function, wherein a flow path member and a second check valve are mounted in a liner, the second check valve is composed of a hemispherical cylinder mounted in an elevation space of the liner, having an open upper part, and of which a diameter decreases toward a lower end and includes a variable part in which the hemispherical cylinder is vertically variable and an opening and closing protrusion configured to perform supply and blocking of a flow path.

An injection system includes an injection system body defining a proximal opening at a proximal end thereof and a distal needle interface at a distal end thereof. The system also includes proximal and distal stopper members disposed in the injection system body, forming a proximal drug and a distal drug chamber. The system further includes a plunger member configured to insert the proximal stopper member relative to the injection system body. Moreover, the system includes a valve forming an openable barrier between the distal needle interface and the distal drug chamber. The valve includes an outer member including a distal diaphragm, and an inner member. The distal diaphragm is configured to elastically deform distally away from the inner member with increased pressure in the distal drug chamber to allow flow from the distal drug chamber to the distal needle interface.

A teleoperated surgical instrument comprises a housing configured to couple to a teleoperated manipulator and an elongated tube having a first end and a second end opposite the first end. The first end is mounted to the housing and the second end has one or more openings configured to deliver or receive a fluid at a surgical site. The instrument further comprises a flow control system in the housing. The flow control system includes a first tubular member coupled to the elongated tube and a first control element rotatable relative to the housing and the first tubular member. The first control element includes a receiving portion coupled to a shaft portion. The receiving portion is configured to couple with the teleoperated manipulator and rotate to control flow of the fluid through the first tubular member.

A regulator for modulation of the flow rate of blood out of a patient's blood vessel during blood collection is disclosed. The regulator includes a housing having a housing inlet, a housing outlet, and a wall defining a housing interior. At least a portion of the wall includes a flexible member. A valve is associated with the flexible member and is in communication with the housing interior. The regulator is designed so that upon an application of a differential pressure within the housing interior, the flexible member and/or valve automatically move with respect to either the housing inlet or housing outlet to modulate a flow of blood moving through the housing. A manual over-ride device can be provided to enable a user to over-ride the automatic regulation and manually regulate the flow of blood through the housing.

A regulator for modulation of the flow rate of blood out of a patients blood vessel during blood collection is disclosed. The regulator includes a housing having a housing inlet, a housing outlet, and a wall defining a housing interior. At least a portion of the wall includes a flexible member. A valve is associated with the flexible member and is in communication with the housing interior. The regulator is designed so that upon an application of a differential pressure within the housing interior, the flexible member and/or valve automatically move with respect to either the housing inlet or housing outlet to modulate a flow of blood moving through the housing. A manual over-ride device can be provided to enable a user to over-ride the automatic regulation and manually regulate the flow of blood through the housing.

A device introduced small volumes of fluid for delivery to a patient through a fluid line. The device includes a first arm adapted to receive a syringe and a second arm fluidly connected to an upstream reservoir that defines an internal volume adapted to receive a volume of fluid. The device includes a fluid obstruction mechanism configured to selectably block flow of fluid from the reservoir toward the patient, wherein the fluid obstruction mechanism transitions between a first state that permits fluid flow from the reservoir toward the patient and a second state that directs fluid flow from the syringe into the reservoir while blocking fluid flow from the reservoir toward the patient.

An improved aerosol dispensing apparatus includes an aerosol container, a discharge piece movably mounted to the aerosol container, a flow control valve mounted within the discharge piece, a battery, and an electronically controlled metering valve electronically connected to the battery and in fluid communication with the flow control valve. The flow control valve is movable between an open position wherein a volume of an aerosol formulation is directed from the aerosol container through the flow control valve to the metering valve, and a closed position, wherein the metering valve is configured to precisely control a flow of the aerosol formulation outward of the discharge piece. A solenoid is electronically connected to the battery and is movable between an actuated position wherein the solenoid urges the flow control valve into the open position, and an un-actuated position wherein the flow control valve remains in the closed position.

Intravenous sets, port assemblies, and vascular access assemblies can include a vent device for venting gas trapped therein. The vent device can connect to a connector, such as a needleless port having a valve, and the connector connected to an adapter. The vent device can have a valve opener, an engagement body, and a gas-permeable vent incorporated with the valve opener. In use, the valve opener is moveable from an initial non-venting condition, in which the valve opener does not actuate the valve and is held in-register with the valve by the engagement body, to a venting condition, in which the valve opener is actuated to open the valve to allow gas to pass from within the system the connector is connected to then flow out through the gas-permeable vent.

A valve assembly embodiment includes first and second valve devices and a coupling mechanism. Each of the first and second valve devices can include first and second fluid pathways and first and second valve members respectively positioned at the first and second fluid pathways. Both the first and second valve members can have an open position that permits fluid flow and a closed position that prevents fluid flow along the first and second fluid pathways past the first and second valve members. The coupling mechanism can couple to each of the first and second valve members. When the valve assembly is actuated, the coupling mechanism can be configured to transition one or both of the first and second valve members between the open and closed positions.

A valve connector for hemodialysis lines includes a male luer lock valved fitting, a female luer lock fitting that can be engaged with the male luer lock fitting, and a rotatable ring nut carried by the male luer lock fitting and that can be screwed with the female luer lock fitting. Before the rotatable ring nut begins the screwing on the female luer lock fitting, the male luer lock valved fitting is fully opened, and as soon as the ring nut ceases the unscrewing from the female luer lock fitting, the male luer lock valved fitting fully closes instantly.