A valve may have a fluid inlet and a fluid outlet. The valve may include a valve stem having a lumen extending from a first opening at a proximal portion of the valve stem to a second opening at a distal end of the valve stem. A plurality of seals may be positioned relative to the valve stem. The valve stem and seals may be configured so that a fluid entering the inlet is prevented from flowing to the outlet in a first position of the valve stem and relative to the inlet and the outlet. The valve stem and the seals may be configured so that a fluid entering the inlet flows to the outlet in a second position of the valve stem relative to the inlet and the outlet, the second position being more distal than the first position relative to the inlet and the outlet.

The cleaning valves (or valves) of the current disclosure are generally single-use devices (SUDs) and therefore disposable. Reusing SUDs can be disadvantageous, as single-use devices are not designed to be reusable. Accordingly, valves for medical devices, such as endoscopes, disclosed may be configured to transition from a first state to a second state for indication of utilization of the valve, e.g., via exposure to a valve well. The transition from the first state to the second state may prevent reuse valves of the present disclosure. In embodiments, the valve may be made from a limited number of components and materials.

Systems and methods are provided for intermittent microinfusion. A system may include a pump and an IV set that includes a y-port valve disposed below a pump interface portion of the IV tubing. The y-port valve may include an internal valve member that allows fluid to flow from the pump to a patient when no syringe is attached to the y-port. The internal valve member may be moved by the attachment of a syringe containing the medication to be infused to the y-port such that the fluid pathway from the pump to the patient is blocked and fluid from the syringe can be injected into the IV tubing between the y-port valve and the pump. The pump may retrograde pump the medication into the tubing via the y-port valve and then forward pump the medication to the patient when the syringe is removed from the y-port.

A medical stopcock device comprises a housing configured to allow a flow of liquid therethrough, and a cock configured to fit in the housing and switch flow paths of the liquid flowing through the housing. The housing comprises a cylindrical body section formed with a through-hole, an upstream port section provided on an outer periphery of the body section, a downstream port section provided on the outer periphery of the body section and disposed on a side of the body section that is opposite to the upstream port section, and a side tube port section provided between the upstream port section and the downstream port section on the outer periphery of the body section and including a first communication hole, and a second communication hole having an opening area smaller than an opening area of the first communication hole. The cock comprises a cylindrical section configured to be inserted in the through-hole of the body section in a slidable manner, and including a first flow path groove and a second flow path groove, and a handle section configured to rotate the cylindrical section. When the cock is at a reference position, the upstream port section, the side tube port section, and the downstream port section communicate with each other in a manner such that the first flow path groove communicates with the upstream port section and the first communication hole in the side tube port section, and the second flow path groove communicates with the second communication hole in the side tube port section and the downstream port section.

The cleaning valves (or valves) of the current disclosure are generally single-use devices (SUDs) and therefore disposable. Reusing SUDs can be disadvantageous, as single-use devices are not designed to be reusable. Accordingly, valves for medical devices, such as endoscopes, disclosed may be configured to transition from a first state to a second state for indication of utilization of the valve, e.g., via exposure to a valve well. The transition from the first state to the second state may prevent reuse valves of the present disclosure. In embodiments, the valve may be made from a limited number of components and materials.

A valve mechanism for a suction instrument or an irrigation instrument is disclosed, which comprises: a valve object; a first piston moveably disposed in the valve object; a second piston moveably disposed in the valve object; and a piston buckling unit pivoting on an outside of the valve object. When the first piston is pressed, the first piston moves downward and a first buckle on the first piston is fixed on a third buckle of the piston buckling unit to open an irrigating pathway; and when the second piston is pressed, the second piston moves downward and a second buckle on the second piston is fixed on another third buckle of the piston buckling unit to open a suction pathway.

A medical fluid control device has a base body and an actuator body. The base body and the actuator body have, respectively, a sliding and sealing surface facing each other and the actuator body is fastened movably to the base body. The actuator body has at least one actuator fluid channel which connects an actuator attachment nozzle directly to an actuator opening in the sliding and sealing surface of the actuator body. The base body has independent first and second base fluid channels, each having a base opening in the sliding and sealing surface of the base body and free of a branching in the base body. The actuator body is movable such that the actuator fluid channel can be brought into a closed or open position in connection with the first or second base fluid channel.

A valve may have a fluid inlet and a fluid outlet. The valve may include a valve stem having a lumen extending from a first opening at a proximal portion of the valve stem to a second opening at a distal end of the valve stem. A plurality of seals may be positioned relative to the valve stem. The valve stem and seals may be configured so that a fluid entering the inlet is prevented from flowing to the outlet in a first position of the valve stem and relative to the inlet and the outlet. The valve stem and the seals may be configured so that a fluid entering the inlet flows to the outlet in a second position of the valve stem relative to the inlet and the outlet, the second position being more distal than the first position relative to the inlet and the outlet.

An apparatus for delivery of fluids to a patient includes an inlet tube and an outlet tube connected to each other at an angular joint. A rotary valve and a piston are fitted to the angular joint forming a chamber. The rotary valve is provided with a priming channel notch and a pumping notch. For priming operation with the fluid delivery apparatus, a user sets the rotary valve to a priming position. During pumping operation, the rotary valve rotates in coordination with the piston to transfer a quantum of fluid from the inlet tube to the outlet tube via the chamber. A second piston is optionally provided on the outlet tube for smoothing out flow rate pulsations.

A control valve includes a tube housing, a tube within the tube housing, and a clamp within the tube housing. The tube is disposed between a first portion of the tube housing and the clamp, and the clamp is movable between an open position and a closed position. The clamp in the open position is located away from the first portion of the tube housing, and the clamp in the first closed position is located adjacent to the first portion of the tube housing.