Systems and methods for distributing a filling fluid are discussed. More particularly an exemplary filling system may include a reservoir holding a filling fluid for distribution. The filling system may also include a pump and filling nozzle fluidly coupled to the reservoir. A processor executes a filling module that when executed receives at least one input fluid property of the filling fluid and generates at least one set of operating parameters for controlling operation of the pump during a filling operation based at least in part on the fluid property. The generated set of operating parameters enable control of the pump to distribute the filling fluid through the filling nozzle, such that a fluid interface with a stable resting profile forms in the filling fluid in the filling nozzle adjacent to the nozzle opening after the filling fluid is distributed from the filling nozzle.

Fill stations and base stations are provided for personal pump systems. The fill stations may be opened and closed to accept a reservoir and to allow fluid to be introduced into the reservoir for use with personal pump systems. The fill stations may hold the reservoir at a tilt relative to an underlying surface and may discourage overfilling of the reservoir. The filling stations may also include viewing windows having fluid lines marked thereon for indicating volume of fluid within the reservoir.

Systems and methods for distributing a filling fluid are discussed. More particularly an exemplary filling system may include a reservoir holding a filling fluid for distribution. The filling system may also include a pump and filling nozzle fluidly coupled to the reservoir. A processor executes a filling module that when executed receives at least one input fluid property of the filling fluid and generates at least one set of operating parameters for controlling operation of the pump during a filling operation based at least in part on the fluid property. The generated set of operating parameters enable control of the pump to distribute the filling fluid through the filling nozzle, such that a fluid interface with a stable resting profile forms in the filling fluid in the filling nozzle adjacent to the nozzle opening after the filling fluid is distributed from the filling nozzle.

A system is disclosed. The system includes a reservoir for containing a fluidic medium, the reservoir including a front surface, a resilient cylindrical flexure portion connected to the front surface, the resilient cylindrical flexure portion comprising an accordion-like structure that is able to expand and contract to change an interior volume within the resilient cylindrical flexure portion, a central passageway within the resilient cylindrical flexure, and a collection chamber connected to the central passageway. Also, a system including a reservoir, a plunger head located within the reservoir, a plunger arm connected to the plunger head, a driving shaft connected to the plunger arm, and a motor connected to the driving shaft, the motor controllable to move the drive shaft in a first motion and a second motion so as to move the advance plunger head and retract the plunger head within the reservoir.

Hose pump with a hose for taking up the fluid to be pumped and with a planetary gear rack having a ring gear, a sun gear and at least two planetary gears interposed between the ring gear and the sun gear, wherein at least one of the teeth of the planetary gear during one cycle of the planetary gear around the sun gear at least once engages with the hose to squeeze a portion of the hose.

A roller assembly comprises a central section with a hub; a plurality of spring assemblies coupled to the central section; a plurality of arms coupled to the central section such that each arm is capable of pivoting independently with respect to the central section; and a plurality of rollers, one roller coupled to each of the plurality of arms. Each roller may be coupled to each arm with a pin.

A roller assembly comprises a central section with a hub; a plurality of arms coupled to the central section, each arm having a radial section, an arcuate section, and a bent section; and a plurality of rollers, one roller coupled to the bent section of each arm. The arms may be flexible such that the rollers are capable of moving with respect to the central section when the arms flex. The rolling surface of the rollers is arranged to engage a polymer sheet or flexible tubing throughout travel of the arms.

Embodiments of pumps are described herein that may be used as peristaltic pumps. The pumps may include features that provide for quiet operation as well as automatically loading of tubing. Embodiments may be implemented in blood separation systems.

A disposable cartridge (20) for a peristaltic micro pump, comprising a housing (21); a inlet provided on the housing and comprising an inlet connector (25); an outlet provided on the housing and comprising an outlet connector (26); a fluid channel (23) extending in the housing (21) between the inlet and the outlet; a channel section (22) of the fluid channel (23), the channel section (22) provided by a flexible tube (24); one or more openings provided adjacent to the channel section (22) in the housing (21) in such a way that one or more pump engaging elements of a pump drive can engage with the flexible tube (24) through the opening for compressing the flexible tube (24) in a pumping process for pumping a fluid through the fluid channel (23); and a mounting device provided on the housing (21) for detachably mounting the housing (21) in a peristaltic micro pump housing. Furthermore, a peristaltic micro pump, comprising a disposable cartridge (20) is disclosed.

A hose pump includes a hose bed having a counter support, a carrier disk rotatable relative to the counter support, and a number of pinch rollers and guide rollers arranged on the carrier disk. A guide roller is arranged between two consecutive pinch rollers, and the pinch rollers press a hose inserted into hose bed against the counter support, while pinching the hose when the carrier disk is rotating in the conveying direction to transport the fluid in the hose. To ensure reliable threading of a hose section of a pump hose, when the hose section is somewhat too short and to prevent unthreading of the inserted hose section during operation of the hose pump, the angular distance between a guide roller and the pinch roller preceding the guide roller in the conveying direction is greater than the angular distance between this guide roller and the pinch roller following the guide roller in the conveying direction.