An intravenous delivery system may have a liquid source containing a liquid, tubing, and an anti-run-dry membrane positioned such that the liquid, flowing form the liquid source to the tubing, passes through the anti-run-dry membrane. The anti-run-dry membrane may have a plurality of pores through which the liquid flows, and may be formed of a hydrophilic material that resists passage of air through the pores. The intravenous delivery system may further have a bubble point raising component that raises the bubble point of the anti-run-dry membrane. The bubble point raising component may, in some embodiments, be a high surface energy coating or additive.

An infusion cartridge includes: a case portion having a portion that defines a recess; and a film portion that has flexibility and covers an open side of the recess. The film portion and said portion of the case portion together form an inner wall that defines a storage space configured to store an infusion solution. The infusion cartridge further includes: a filling port located at the inner wall and configured to allow the infusion solution to be filled into the storage space from an outside; and a ventilation port located at the inner wall and configured to allow gas in the storage space to be discharged to the outside.

A fluid check-valve for venting gas from a fluidic system comprises a retention body defining a fluid aperture having an upstream side and a downstream side, a hydrophilic porous material held by the retention body and disposed to cover the fluid aperture, and a hydrophobic porous material held by the retention body and disposed to cover the fluid aperture and adjacent the hydrophilic porous material. One face of the hydrophilic porous material is in fluid communication with the upstream side of the aperture, and one face of the hydrophobic porous material is in fluid communication with the downstream side of the aperture. The hydrophilic porous material is configured to retain liquid from the upstream side to hinder passage of gas from the downstream side to the upstream side, and the hydrophobic porous material is configured to hinder passage of liquid from the upstream side to the downstream side.

The present invention is directed to an apparatus suitable for separating and collecting gas bubbles entrained in a liquid, wherein the apparatus comprises a housing defining at least one chamber, the chamber having an inlet port and an outlet port; a diverter positioned between the inlet port and the outlet port; and, an elongated exit tube with an intake end and an export end; wherein the intake end of the elongated exit tube is centrally located within the chamber and the export end of the elongated exit tube is connected to the outlet port of the chamber.

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 controller in a fluid delivery system controls magnitudes of pressure in a first volume and a second volume. The first volume is of a known magnitude. The second volume is of an unknown magnitude and varies. The controller estimates a temperature of gas in the first volume and a temperature of gas in the second volume based on measurements of pressure in the first volume and measurements of pressure in the second volume. The controller then calculates a magnitude of the second volume based on measured pressures of the gases and estimated temperatures of gases in the first volume and the second volume.

An infusion tube system and a method for manufacture are provided, An infusion tube system including an infusion tube and a connector attached to the infusion tube at an end of the infusion tube is disclosed. The connector has a proximal end and includes a connector body extending from a distal end to a proximal end along a center axis and defining a cavity. The connector body includes an end wall with an inner surface, and at least one vent opening, and a sidewall extending from the end wall along the center axis with an inner and outer surface. The connector includes a membrane covering the at least one vent opening, the membrane being welded to the inner surface of the end wall along at least one welding seam including a first welding seam such that the membrane covers and seals the at least one vent opening.

An infusion pump system is disclosed. The infusion pump system includes an infusion pump and a controller device in wireless communication with the infusion pump, wherein the controller including instructions for controlling the infusion pump, wherein the instructions may be synchronized with a secure web portal.

An intravenous delivery system may have a liquid source containing a liquid, tubing, and an anti-run-dry membrane positioned such that the liquid, flowing form the liquid source to the tubing, passes through the anti-run-dry membrane. The anti-run-dry membrane may have a plurality of pores through which the liquid flows, and may be formed of a hydrophilic material that resists passage of air through the pores. The intravenous delivery system may further have a bubble point raising component that raises the bubble point of the anti-run-dry membrane. The bubble point raising component may, in some embodiments, be a high surface energy coating or additive.

A novel hemostasis valve-equipped indwelling needle that is capable of discharging air in an internal flow path includes a cannula to be inserted percutaneously into a blood vessel on a distal end side thereof, a link connector on a proximal end side thereof, an internal flow path extending from the cannula to the link connector, and a hemostatic valve disposed inside the link connector. An air vent passage that allows the internal flow path to communicate with an external space is formed in the link connector further on the cannula side than the hemostatic valve, and a filter that allows gas to pass through but does not allow liquid to pass through is mounted in a compressed state on the air vent passage.