A valve for a needleless valve system. The valve includes a body configured to be disposed in the needleless valve system and controlling fluid flow through the needleless valve system and wherein the body is tail-less. The body includes a continuous top surface, and a compression feature configured to control how the body is compressed to allow fluid flow through the needleless valve system.

Needleless connectors are described herein. A needleless connector includes a body, a valve element at least partially disposed within the body, and a base. The valve element includes a cylindrical portion having an outwardly extending flange at a distal end. The flange has a bottom surface with an outer area and an inner area. The base includes a rim having a top surface that is in contact with an outer area of the flange of the valve element, the rim defining a recess with a bottom surface separated from the top surface of the rim, and at least one support member having a top surface spaced apart from the top surface of the rim and configured to resist deformation of the flange toward the recess.

A fluid flow control valve includes a valve body with a fluid flow lumen therethrough and a valve member located within the fluid flow lumen. At least one of the valve body and valve member is resilient and respectively sized for movement between a normally closed position in which the valve member and a fluid lumen surface are in sufficient annular contact to block fluid flow through the fluid flow lumen and an open position in which at least one of the valve body and valve member flexes to a spaced apart position that allows fluid flow between them. Downstream fluid pressure may contact the valve body to enhance sealing. A fluid absorbent member may also be employed with the valve body. Flow control devices, such as medical fluid injection devices, and methods may employ this valve.

An infusion set check valve assembly includes a self-contained housing that defines inlet ports and an outlet port. The assembly also includes at least one check valve disposed within the self-contained housing between the outlet channel and at least one of the inlet ports. The at least one check valve is configured to open for a first fluid to flow from a first inlet to a patient line via an outlet channel while a second fluid also flows from a second inlet to the patient line via the outlet channel. The at least one check valve closes to prevent the first fluid from flowing to the patient line via the outlet channel while the second fluid flows to the patient line.

A medical fluid connection device connects to a complementary connector unit in a fluid-conducting manner. The medical fluid connection device has a housing member having an inlet opening and at least one outlet opening. The inlet opening and at least one outlet opening are interconnected in a fluid-conducting manner by a fluid duct that extends substantially along an axial direction, and a soft elastic sealing member which in a circumferential direction at least in portions encompasses a wall of the fluid duct and along the axial direction is guided so as to be movable in relation to the wall of the fluid duct. A Luer external taper connects to a Luer internal taper of the complementary connector unit in a fluid-tight manner. The Luer external taper is configured by a wall portion of the soft elastic sealing member. The medical fluid connection device can be used in infusion therapy.

An apparatus, system and method for providing a flow restrictor suitable for inclusion in an aspiration flow of an ocular surgical device. The flow restrictor includes a conical valve head suitable for insertion into a valve stage, wherein, upon the insertion, the valve head at least substantially impedes the aspiration flow; a flexible spider membrane having a plurality of valve passages that open and close with the flexation of the membrane, wherein the membrane is connective with the valve head and forces the insertion of the valve head into the valve stage proportionally to the aspiration flow; a circular receiving plate for receiving the aspiration flow, wherein the circular receiving plate imparts the proportional insertion to the membrane; and a plurality of ribs integral to at least one of the valve head and the valve stage that provides a minimum for the aspiration flow when the insertion is full.

A valve including an antimicrobial agent can be used with needleless access connectors. The valve can have an insert that includes an antimicrobial coating thereon and/or the valve can have physical features, such as a series of tunnels or groves or a patterned surface, containing an antimicrobial formulation and/or the valve can be made of a material that includes an antimicrobial agent.

A needleless access connector having an access port and a sustained release antimicrobial coating only on a top surface of the access port is disclosed. The top surface of the access port can be defined by a top surface of a proximal end of a housing and a top surface of a head portion of a compressible valve disposed within an internal cavity of the housing. In certain embodiments of the present disclosure, the sustained release antimicrobial coating is on: (i) the top surface the proximal end of the housing, or (ii) the top surface of the head portion of the compressible valve, or (iii) the sustained release antimicrobial coating is only on both the top surface the proximal end of the housing and the top surface of the head portion of the compressible valve.

A needleless connector may include a housing having an inlet port, an outlet port, and an inner surface defining an internal cavity extending between the inlet and outlet ports, and a compressible valve reciprocally disposed within the internal cavity. In a closed state, a top section of a head portion of the compressible valve may have a planar shape configured to contact and seal against the inner surface of the housing. In an open state, where the compressible valve is subject to an axial force, the top section of the head portion may be lodged between two pinch points between opposing walls of an inwardly angled portion of the internal surface. Additionally, in the open state, the top section of the head portion may have a non-planar shape defining a fluid path extending at least partially between opposing walls on an outwardly angled portion of the internal surface.

A catheter assembly may include a catheter adapter, which may include a distal end, a proximal end, and a lumen extending through the distal end of the catheter adapter and the proximal end of the catheter adapter. The catheter assembly may include a catheter extending distally from the distal end of the catheter adapter. The catheter assembly may include an introducer needle extending through the catheter. An anti-thrombogenic material may be extruded through a die and/or molded to form one or more portions of the catheter assembly. Additionally or alternatively, inner surfaces and/or outer surfaces of one or more portions of the catheter assembly may be coated with an anti-thrombogenic coating that includes the anti-thrombogenic material.