To provide a tube pump which includes: a drive mechanism including a first roller unit and a second roller unit which rotate about an axis line while being in contact with a tube having elasticity, and a first drive unit and a second drive unit which cause the first roller unit and the second roller unit to rotate independently about the axis line; a holding mechanism which holds the tube in an arcuate shape about the axis line; and an attachment mechanism which detachably attaches the holding mechanism to the drive mechanism.

The present subject matter describes a system for ink pumping. In an example implementation, the system comprises a tube having a first end and a second end, a peristaltic pump to pump ink through the tube, a first ink port, and a second ink port. The system includes a first fluid chamber between the first end of the tube and the first ink port. The first fluid chamber is configured to hold the ink entering and exiting the tube through the first end to dampen flow of the pumped ink. The system also includes a second fluid chamber between the second end of the tube and the second ink port. The second fluid chamber is configured to hold the ink entering and exiting the tube through the second end to dampen flow of the pumped ink.

A drip tight pump includes a top cover with an inlet port and an outlet port, a sealing mat, a valve plate with an inlet hole and an outlet hole, a water inlet one-way valve, a cup, a cylinder, a swing frame, a steel needle, a steel ball, an eccentric wheel, a bottom cover and a motor which are successively set. The drip tight pump also includes a first leak-proof member and/or a second leak-proof member between the top cover and the sealing mat. The drip tight pump can seal the outlet hole and the inlet port, so that to prevent the drip tight pump from dripping.

A fluid management system includes a disposable cassette carrying inflow and outflow tubing sections that are configured for releasably mating with a console including a control unit and a pair of roller pump heads. The console may automatically identify the disposable cassette and weigh the fluid in an inflow source. During operation, the system can monitor pressure in the working space, and provide for inflow and outflow control to maintain any desired operating parameters.

A medical infusion fluid handling system, such as an automated peritoneal dialysis system, may be arranged to de-cap and connect one or more lines (such as solution lines) with one or more spikes or other connection ports on a fluid handling cassette. This feature may reduce a likelihood of contamination since no human interaction is required to de-cap and connect the one or more lines and the one or more spikes. For example, the automated peritoneal dialysis system may include a carriage arranged to receive the one or more lines each having a connector end and a cap. The carriage may move along a first direction so as to move the connector ends of the one or more lines along the first direction, and a cap stripper may be arranged to engage with the caps on the solution lines on the carriage. The cap stripper may move in a second direction transverse to the first direction, as well as to move with the carriage along the first direction.

A liquid supply system providing a stable pump operation even when ultra-low temperature liquid including slurry is set as a liquid feed target. The liquid supply system that supplies ultra-low temperature liquid including a slurry component by expansion and contraction of bellows 41 and 42. At least a region in the bellows 41 and 42 that is in contact with the liquid is coated with resin having a low temperature brittle temperature that is equal to or lower than an operating temperature of the liquid supply system.

A system is provided. The system includes one or more of a first bellows assembly, which includes a first bellows block, a second bellows block, a first pumping bellow, and first and second seals. The first bellows assembly includes a master fluid inlet port configured to receive a fluid and route the fluid to a first coupling. The second bellows block includes a master fluid outlet port and configured to route the fluid in a pressurized state from a second coupling to the master fluid outlet port. The first pumping bellow includes first and second bellow ports, the first pumping bellow oriented between the first and second couplings and coupled to a pump configured to pressurize the fluid. The first seal is disposed between the first coupling and the first bellow port and the second seal is disposed between the second coupling and the second bellow port.

A dispenser cassette is shown and described for attachment to a peristaltic pump that has a first cartridge, second cartridge, and tubes, which are accommodated in the dispenser cassette such that both ends of the tubes are each inserted into one of the cartridges. According to the invention, the two cartridges are connected to one another by an elastic connector.

A bellows pump device includes a control unit which, before operation of the bellows pump device is started, performs initial control in which solenoid valves are switched and pressurized air is supplied to suction-side air chambers in advance, thereby determining operation air pressures which are air pressures of the pressurized air to be supplied to the suction-side air chambers during the operation. As the initial control, the control unit outputs control commands to electropneumatic regulators so as to gradually increase the air pressures of the pressurized air to be supplied to the suction-side air chambers in advance, and when detection signals resulting from detection of expansion positions of the bellows are inputted from the proximity sensors to the control unit, the control unit determines the air pressures of the pressurized air supplied to the suction-side air chambers at that time as the operation air pressures.

A pumping apparatus 1 for dispensing a flowable product comprises first and second peristaltic pumps 12, 14. The first peristaltic pump 12 comprises a first rotor 18 having at least one pressing member 20, a first cylindrical stator 19 in which the first rotor 18 is rotatable and first flexible tubing 30 extending circumferentially around the first stator 19 against a first inner wall 19a. The second peristaltic pump 14 comprises a second rotor 42 having at least one pressing member 46, a second cylindrical stator 44 in which the second rotor 42 is rotatable and second flexible tubing 54 extending circumferentially around the second stator 44 against a second inner wall 44a. The first and second inner walls 19a, 44a each have a first and second radius r1, r2 respectively with the first radius r1 being greater than the second radius r2, and at least one of the stators 19, 44 is movable relative to the other stator 19, 44.