The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. Volumetric fluid balance, a required element of many such processes, may be achieved with multiple pumps or other proportioning or balancing devices which are to some extent independent of each other. This need may arise in treatments that involve multiple fluids. Safe and secure mechanisms to ensure fluid balance in such systems are described.

An automated peritoneal dialysis system provides both cycler-assisted peritoneal dialysis treatment. The system includes a fluid preparation and treatment device with concentrate dilution components connected to a source of purified water and medicament concentrate. The treatment device has at least one mixing container connected via a pump and valves to the sources, the valves and the pump mixing and diluting the concentrate to form a medicament. Conductivity sensors are provided for fluid quality measurement, calibration, error trapping, and fluid characterization.

The disclosure relates to devices and methods for the treatment of edema, which devices use a restrictor for flow compensation. Devices and methods of the invention further use a flow-restrictor in the circulatory system, upstream of an intravascular pump, to balance pressure changes induced by the pump and to compensate for downstream flow. The device may be provided as an indwelling, intravascular catheter with a mechanical pump such as an impeller and a selectively deployable restrictor such as an inflatable balloon. Congestive heart failure or edema is treated by \ operating the pump in an innominate vein and using the restrictor for flow compensation, to restrict the upstream flow and thus amplify or maintain pressure reduction at the lymphatic outlet.

An e-liquid pumping assembly for supplying e-liquid to an atomizer includes a housing, an e-liquid bottle, and a pumping head assembly. The pumping head assembly includes a piston, a pumping body clamped with the e-liquid bottle by a first sealing portion, a pumping cover clamped with the pumping body, a feeding tube connected to the atomizer and the pumping body. The piston includes a first lower end inserted into the pumping body and a first upper end exposed from the pumping cover. The e-liquid suction pipe includes a second lower and upper ends respectively inserted into the e-liquid bottle and the pumping body. The piston is pressed to expel air from the pumping body so that e-liquid enters the pumping body through the e-liquid suction pipe. The piston is again pressed for pushing the e-liquid out of die pumping body to the atomizer through the feeding tube.

An infusion system for being operatively connected to a fluid delivery line and to an infusion container includes a pump, a plurality of different types of sensors connected to the pump or the fluid delivery line, at least one processor, and a memory. The plurality of different types of sensors are configured to indicate whether air is in the fluid delivery line. The memory includes programming code for execution by the at least one processor. The programming code is configured to, based on measurements taken by the plurality of different types of sensors, determine: whether there is air in the fluid delivery line; whether there is a partial occlusion or a total occlusion in the fluid delivery line; or a percentage of the air present in the fluid delivery line or the probability of the air being in the fluid delivery line.

The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. Volumetric fluid balance, a required element of many such processes, may be achieved with multiple pumps or other proportioning or balancing devices which are to some extent independent of each other. This need may arise in treatments that involve multiple fluids. Safe and secure mechanisms to ensure fluid balance in such systems are described.

A device for extracorporeal blood treatment includes a balancing system and calculates an ultrafiltration volume (UF.sub.D) as a volume withdrawal on the basis of a pressure difference (.sub.P) and a temperature difference (.sub.T) at an inlet and an outlet of at least two balance chambers. To this end, pressure sensors are arranged directly behind an inlet and an outlet of the at least two balance chambers, respectively, and determine a fluid pressure at their respective position, and temperature sensors are arranged at inputs of the at least two balance chambers and determine a temperature in the inlet and the outlet of the balance chamber. The ultrafiltration volume (UD.sub.F) is calculated using the pressure difference (.sub.P) established on the basis of fluid pressure values determined by the pressure sensors, and the temperature difference (.sub.T) established on the basis of temperature values determined by the temperature sensors.

Embodiments are directed to infusion devices, systems, and methods to detect a capacity of a collapsible fluid reservoir of an infusion cartridge and/or a volume of a fluid disposed in the collapsible fluid reservoir or some other parameters of the infusion cartridge, and setting corresponding therapeutic parameters of an infusion device. Embodiments may include, obtaining data on the volume of fluid in the collapsible fluid reservoir, analyzing the obtained data to determine the setting of therapeutic parameters, and setting one or more therapeutic parameters of an infusion device.

A flow control apparatus and method for accurate detection of occlusion conditions in a feeding set. A sensor is arranged with respect to a pumping device to produce a signal indicative of pressure in the feeding set. A control circuit that may receive the sensor signal from the sensor indicative of the pressure in the feeding set may also control operation of the pumping device. The control circuit is configured to operate the pumping device in an operational state, and in a reset state subsequent to the operational state in which the pumping device does not produce a pumping action and the pumping device is moved to a position in which the pumping device does not block the feeding set to permit fluid flow in a backflow direction opposite to the patient direction thereby relieving any built up pressure in the feeding set downstream of the pumping device.

A method for forming a changeable mist of an aromatherapy machine and the aromatherapy machine are provided. A mist storage cavity with an upward opening is disposed on the aromatherapy machine, and a mist outlet of the aromatherapy machine communicates with an inner space of the mist storage cavity. When the aromatherapy machine generates an atomized vapor in an atomization chamber, the atomization chamber is provided with an internal air pressure higher than an atmospheric pressure, so that the atomized vapor is ejected outward at a different speed state based on a different internal air pressure, so as to form a different mist retention state. In a first configuration solution, the internal air pressure is controlled to be slightly higher than an external atmospheric pressure, so that the atomized vapor floats out in a slow surge manner, and that the atomized vapor is accumulated as a haze in the inner space.