A collapsible valve comprising a first portion with at least one dimple in a side thereof, and a second portion, the second portion being narrower than the first portion and arranged along an axial dimension of the first portion, the second portion including a cut therein.

A needleless connector includes a body having a fluid path, a vent path, and a male fitting. The needleless connector also includes a valve disposed within the male fitting. The valve is configured to move between a first configuration, in which the fluid path is blocked, and a second configuration, in which the fluid path is open. The needleless connector further includes a seal disposed around the valve. The seal is configured to separate the fluid path from the vent path in the first and second configurations. Moving the valve from the first configuration to the second configuration also opens the vent path. The seal maintains the separation between the fluid path and the vent path when the valve moves from the first configuration to the second configuration.

A collapsible valve comprising a first portion with at least one dimple in a side thereof, and a second portion, the second portion being narrower than the first portion and arranged along an axial dimension of the first portion, the second portion including a cut therein.

Some embodiments disclosed herein relate to a medical connector having a backflow resistance module configured to prevent fluid from being drawn into the connector when a backflow inducing event occurs. In some embodiments, the backflow resistance module can include a variable-volume chamber configured to change in volume in response to a backflow-inducing event and a check valve configured to resist backflow. In some embodiments, the medical connector can include a fluid diverter configured to direct fluid flowing through the medical connector into the variable volume chamber to prevent fluid stagnation therein. In some embodiments, the medical connector includes a body member, a base member, a seal member, a support member, and a valve member.

A sealed medication dispensing and administering device has a syringe, a plunger, a connecting holder, an elastic valve, and a liquid stopper. The syringe has an outer barrel having an air inlet tube and an inner barrel inserted inside the outer barrel and having a medication inlet tube. The plunger is inserted within the outer and inner barrels. The connecting holder is connected to the syringe and has a connecting cover with at least one outer connecting hole and two piercing needles respectively piercing inside the air inlet tube and the medication inlet tube. Inner spaces of the two piercing needles communicate with the at least one outer connecting hole. The elastic valve selectively covers the two piercing needles. The fluid stopper is disposed within the connecting cover and blocks one of the at least one outer connecting hole and the inner space of the air inlet tube.

A flow control device includes a housing having a primary inlet, a secondary inlet, and an outlet disposed downstream of the primary and secondary inlets. The flow control device further includes a chamber defined by an inner circumferential surface of the housing. The chamber fluidly connects the primary and secondary inlets with the outlet. A valve member is mounted in the chamber to pivot toward and block the primary inlet by fluid pressure in the secondary inlet when fluid pressure into the secondary inlet is higher than fluid pressure into the primary inlet.

A connector includes: a housing that includes a tubular body connecting unit to which a tubular body is connectable, a concave portion inside the housing, and a receiving portion; and a valve body configured such that, when the tubular body is connected to the tubular body connecting unit, the valve body is pressed by the tubular body against a biasing force, thereby sliding from a closed position to an opened position. The valve body includes an overriding portion configured such that, as the valve body slides from a closed position side toward an opened position side, the overriding portion is pressed against the receiving portion of the housing and rides over the receiving portion by elastic deformation.

Some embodiments disclosed herein relate to a medical connector having a backflow resistance module configured to prevent fluid from being drawn into the connector when a backflow inducing event occurs. In some embodiments, the backflow resistance module can include a variable-volume chamber configured to change in volume in response to a backflow-inducing event and a check valve configured to resist backflow. In some embodiments, the medical connector can include a fluid diverter configured to direct fluid flowing through the medical connector into the variable volume chamber to prevent fluid stagnation therein. In some embodiments, the medical connector includes a body member, a base member, a seal member, a support member, and a valve member.

A soft grip medical connector comprises a housing with an upstream end, a downstream end and a lumen extending through a central portion thereof. A flexible member comprises a valve portion integrally formed with a sleeve portion. The valve portion is positioned within a section of the housing and is configured to control a flow of fluid through the housing lumen. The sleeve is inverted to envelope at least a portion of the outer surface of the housing. In some embodiments the gripping portion is integrally formed with the valve portion. In some embodiments, the connector is also generally configured to create a positive pressure in a catheter lumen upon removal of a syringe or other medical device from the upstream end of the connector. Methods of making a medical fluid connector generally comprise forming a valve member with a sleeve extending there from, and assembling the valve, sleeve and housing.

A multi-use drug delivery device for extended use, wherein the multi-use drug delivery device comprising a multi-use main portion (310) and a single-use flow conducting device (360) adapted for conducting drug to the subcutaneous tissue of a subject, wherein the change from a connected configuration to an unconnected configuration of the main portion and the flow conducting device is through the intermediate configuration. The intermediate configuration comprises an equalizing channel defining an equalizing flow path (304) different from an unintended flow path (303). The equalizing channel is adapted for equalizing the fluid pressure in a fluid communication volume (301) to the fluid pressure in the external environment, upon changing the configuration from the connected to the intermediate configuration and thereby expanding an internal volume, whereby an equalizing fluid flow along the equalizing flow path is larger than an unintended flow along the unintended flow path, whereby equalization of the fluid communication volume is provided with a reduced risk of introducing microorganisms from the flow channel (362) into the reservoir (311).