A pump for pumping fluid includes a tube platen, a plunger, a bias member, inlet and outlet valves, an actuator mechanism, a position sensor, and a processor. The plunger is configured for actuation toward and away from the infusion-tube when the tube platen is disposed opposite to the plunger. The tube platen can hold an intravenous infusion tube. The bias member is configured to urge the plunger toward the tube platen.

An IV set corkscrew hand pump includes a body, a corkscrew member disposed in the body, an inlet port disposed on a first end of the body, an outlet port disposed on a second end of the body and a drive mechanism coupled to the corkscrew member. The drive mechanism is configured to cause the corkscrew mechanism to turn within the body to increase fluid flow downstream in an IV set. IV sets with IV set corkscrew hand pumps and methods of operating IV set corkscrew hand pumps are also provided.

An apparatus, system and method for regulating fluid flow are disclosed. The apparatus includes a flow rate sensor and a valve. The flow rate sensor uses images to estimate flow through a drip chamber and then controls the valve based on the estimated flow rate. The valve comprises a rigid housing disposed around the tube in which fluid flow is being controlled. Increasing the pressure in the housing controls the size of the lumen within the tube by deforming the tube, therefore controlling flow through the tube.

A drip chamber assembly that functions irrespective of its orientation and in the presence of increased internal pressure is provided.

A pump for pumping fluid includes a tube platen, a plunger, a bias member, inlet and outlet valves, an actuator mechanism, a position sensor, and a processor. The plunger is configured for actuation toward and away from the infusion-tube when the tube platen is disposed opposite to the plunger. The tube platen can hold an intravenous infusion tube. The bias member is configured to urge the plunger toward the tube platen.

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.

A drip chamber for an infusion tube, including: a first end including a drip tube; a second end including an exit port; and a wall connecting the first and second ends and including an interior surface with a hydrophobic portion. The drip chamber includes a space enclosed by the interior wall and the first and second ends. The hydrophobic portion of the interior surface repels liquid contacting the hydrophobic coating. The hydrophobic portion of the interior surface enables light to refract through the hydrophobic portion and the wall in the same manner as is the case when the hydrophobic portion is not present on the interior surface.

A dropping rate measuring device for measuring a flow rate of liquid droplets which grow on a lower end of a nozzle and intermittently drop from the lower end of the nozzle includes an imaging unit that images a growing liquid droplet which is growing on the lower end of the nozzle at a plurality of time points and acquires a plurality of pieces of image data of the growing liquid droplet, and a data processor that calculates the flow rate by analyzing the plurality of pieces of image data acquired by the imaging unit.

A drip chamber for an infusion tube that includes a first end arranged to receive a drip tube, a second end including an exit port, at least one wall connecting the first and second ends, a space enclosed by the first and second ends and the at least one wall, and first and second lenses each directly fixed to said at least one wall.

An infusion system comprises an infusion pump that comprises an input unit and a display unit. The input unit is adapted for adjusting a value of at least one parameter for controlling operation of the infusion pump and/or an infusion process, and the display unit displays the value of the at least one parameter. The input unit comprises at least one slide bar adapted to be touched by a user's finger and moved along its length to change the value of the parameter, wherein movement in a first direction increases the value of the parameter and in a reversed, second direction decreases the value. The slide bar is adapted so that the rate of change of the parameter value correlates with the speed of the finger movement and in an idle mode is decelerated in a similar way as under influence of an inertia load and/or a friction.