A device and method for measuring a volume of liquid expelled from a syringe is provided. The device generally includes a syringe barrel, a plunger actuated with a plunger rod, and a sensor. The sensor may include two ports with one port being in fluid communication with a source of fluid external to the syringe barrel, while the second port is in fluid communication either with a proximal end portion of the syringe barrel or a hollow plunger rod having a first end closed by the plunger. The method may include expelling liquid from the syringe; detecting and recording differential pressure with the sensor over time; and calculating the volume of liquid expelled from the syringe from the recorded differential pressure over time.

A fluid injector system includes at least one syringe configured for injecting medical fluid and a fluid path assembly in fluid communication with the at least one syringe, the fluid path assembly including at least one air detection region. The system includes an air detector configured to detect one or more air bubbles in a fluid path associated with the air detection region, at least one shutoff valve at a distal end of the fluid path assembly, and at least one processor programmed or configured to actuate the shutoff valve in response to the air detector detecting the one or more air bubbles in the fluid path associated with the air detection region to prevent fluid flow out of the fluid path assembly. The fluid path assembly has a length greater than a distance that an air bubble can travel or expand during an actuation time of the shutoff valve.

A system and method removing air from a reservoir, the system comprising the reservoir that carries a medicament, a first pump connected to the reservoir that draws the medicament out of the reservoir, an air removal device connected to the first pump that releases air from the medicament, and a second pump connected to the air removal device that delivers the medicament.

A valve assembly for a fluid injector system includes a valve housing, a first port configured for fluid communication with a fluid injector, a second port, a third port, and a fourth port configured for fluid communication with a patient line. The valve assembly includes an air detection region associated with the first port, a fluid path length having a proximal end in fluid communication with the second port and a distal end in fluid communication with the third port, and a valve element defining a first fluid path and a second fluid path. The first fluid path provides fluid communication between the first and second ports in a delivery position of the valve housing. The second fluid path provides fluid communication between the third and fourth ports in the delivery position. The third port is isolated from the fourth port in a stop position of the valve housing.

There is provided an IV flow regulator including a first part integrated with a flow control slit, the flow control slit being along a fluid path; a second part integrated with a central stem, the central stem including a spiral surface configured to contact the flow control slit, an area of contact defined by the spiral surface and the flow control slit being shaped substantially like an orifice to enable flow along the fluid path; and a dead space chamfer included in the second part at a portion of the fluid path subsequent to the area of contact.

The problem of infusing air into IV tubing and into a patient from a IV fluid bag inside a pressure infusion cuff is solved by collar embodiments that inhibit the air from being forced into the IV tubing. A collar can include one or more curved arms that create a channel in which that part of the fluid bag is protected against being squeezed by a pressure infusion cuff. A collar allows the fluid bag to be squeezed by the pressure infusion cuff until such time that the fluid level is sufficiently reduced that the collar can inhibit further pressure on the fluid bag by the pressure infusion cuff. Also disclosed is a fluid bag and a pressure infusion cuff that are modified to have a collar incorporated therewith.

A clamping device capable of clamping a flexible tube in a good manner without fail and also capable of intercepting the flow of a fluid in the flexible tube more exactly. A clamping device includes a one end portion having a locked part at a tip, an other end portion having a locking part capable of locking the locked part, and insertion holes allowing a flexible tube to be inserted between a first projection and a second projection. In a clamped state, the first projection and the second projection are positioned close to each other, and the flexible tube is thus clamped so that the flow of a fluid is intercepted at the clamped position. The other end portion has interfering parts. When the one end portion is further pressed with the locked part being locked by the locking part, the interfering parts interfere with predetermined points and prevents further movement of the locked part.

A priming system including a resilient chamber having flexible walls and a first check valve in a first fluid pathway between the resilient chamber and a fluid reservoir such that a fluid flows through the first check valve only in a direction from the fluid reservoir toward the resilient chamber and the fluid returns to the fluid reservoir through a second fluid pathway between the resilient chamber and the fluid reservoir upon compression of the walls of the resilient chamber.

An apparatus having an outer wall that encompasses an interior chamber that holds a predetermined volume of fluid and gas where the gas rises to one end of the interior chamber and the fluid flows to the other end of the interior chamber. The apparatus also has an inlet port that allows for fluid to ingress into the interior chamber and an outlet port that allows for fluid to egress out of the interior chamber.

A medicinal fluid pooling device may be used to pool multiple containers of medicinal fluid to facilitate administration of the medicinal fluid to a patient. A medicinal pooling device may include spikes covered by spike sheaths which are pierced when a container of medicinal fluid is inserted into the medicinal pooling device. The medicinal pooling device may also include a cover configured to cover the spikes. The medicinal pooling device may also include a fluidic interface which may be used to fluidly connect the medicinal pooling device to an infusion pump or syringe.