A dense phase pump has two housings that are attached together using a single releasable fastener. The fastener can be released to allow the two housings to be separated thereby providing access to replaceable components. The replaceable components may include one or more pinch valves or one or more barrier elements. A pinch valve for a dense phase pump has a shape or profile for aligning the pinch valve when the pinch valve is installed in a pinch valve body. The pinch valve optionally has two end flanges, with each end flange having a shaped periphery. The two end flanges may have the same size and shape so that the pinch valve can be installed in either of two orientations that are inverse. A dense phase pump has a pump chamber that can be purged by purge gas that enters the pump off-axis from a purge path axis.

A dense phase pump has two housings that are attached together using a single releasable fastener. The fastener can be released to allow the two housings to be separated thereby providing access to replaceable components. The replaceable components may include one or more pinch valves or one or more barrier elements. A pinch valve for a dense phase pump has a shape or profile for aligning the pinch valve when the pinch valve is installed in a pinch valve body. The pinch valve optionally has two end flanges, with each end flange having a shaped periphery. The two end flanges may have the same size and shape so that the pinch valve can be installed in either of two orientations that are inverse. A dense phase pump has a pump chamber that can be purged by purge gas that enters the pump off-axis from a purge path axis.

Magnetic-based actuation mechanisms for and methods of actuating magnetically-responsive microposts in a reaction (or assay) chamber is disclosed. For example, a microfluidics system is provided that includes a microfluidics device (or cartridge) that includes the reaction (or assay) chamber in which a field of magnetically-responsive surface-attached microposts is installed. The presently disclosed magnetic-based actuation mechanisms are provided in close proximity to the magnetically-responsive microposts wherein the magnetic-based actuation mechanisms are used for actuating the magnetically-responsive microposts. For example, the magnetic-based actuation mechanisms generate an actuation force that is used to induce, for example, synchronized beat patterns and/or metachronal beat patterns in the magnetically-responsive microposts. Additionally, a method of using the presently disclosed magnetic-based actuation mechanisms for actuating the magnetically-responsive microposts is provided.

“The disclosure relates to a pump at least for conveying a fluid, comprising at least one conveyor device which has at least one conveyor chamber, at least one dimensionally stable conveyor chamber element that at least partly delimits the conveyor chamber, and at least one elastically deformable conveyor element that together with the conveyor chamber element delimits the conveyor chamber and is arranged on the conveyor chamber element; at least one drive unit for acting on the conveyor device; and at least one housing for receiving the conveyor device, wherein the housing is formed at least separately from the conveyor chamber element of the conveyor device, in particular from the conveyor device as a whole, in particular such that the conveyor chamber element, in particular the conveyor device, can be removed as a whole from the housing.”

“The disclosure relates to a pump at least for conveying a fluid, comprising at least one conveyor device which has at least one conveyor chamber, at least one dimensionally stable conveyor chamber element that at least partly delimits the conveyor chamber, and at least one elastically deformable conveyor element that together with the conveyor chamber element delimits the conveyor chamber and is arranged on the conveyor chamber element; at least one drive unit for acting on the conveyor device; and at least one housing for receiving the conveyor device, wherein the housing is formed at least separately from the conveyor chamber element of the conveyor device, in particular from the conveyor device as a whole, in particular such that the conveyor chamber element, in particular the conveyor device, can be removed as a whole from the housing.”

A pump cartridge for mounting on a drive rotor includes a roller assembly having first and second hubs maintained in a spaced apart relationship and defining an axis, and a plurality of planetary rollers arranged in a circumferentially spaced orientation about the axis, the rollers mounted to the hubs displacement radially outward. One or more compressible tubing lines are interposed between the rollers and an interior wall of the pump cartridge housing. The housing and the first and second hubs collectively define a passageway through which a spreader on the drive rotor extends and may be rotated relative to the roller assembly to displace the rollers radially outward to thereby compress the tubing lines against the interior wall. A coupling feature on the first hub engages a roller driving feature of the rotor, so that rotation of the rotor causes rotation of the roller assembly about the axis.

A conveyor device is disclosed for at least conveying a fluid with at least one conveyor chamber, with at least one dimensionally stable conveyor chamber element that at least partially delimits the conveyor chamber, with at least one elastically deformable and, in particular, annular conveyor element, particularly a conveyor membrane, that delimits the conveyor chamber together with the conveyor chamber element and is arranged on the conveyor chamber element, and with at least one pressing unit intended for generating an inhomogeneous pressing force, particularly at least in a non-conveying state of the conveyor element, at least in a sealing region between the conveyor element and the conveyor chamber element along a maximum overall extent of the sealing region, particularly along a maximum circumferential extent between the conveyor element and the conveyor chamber element.

A conveyor device is disclosed for at least conveying a fluid with at least one conveyor chamber, with at least one dimensionally stable conveyor chamber element that at least partially delimits the conveyor chamber, with at least one elastically deformable and, in particular, annular conveyor element, particularly a conveyor membrane, that delimits the conveyor chamber together with the conveyor chamber element and is arranged on the conveyor chamber element, and with at least one pressing unit intended for generating an inhomogeneous pressing force, particularly at least in a non-conveying state of the conveyor element, at least in a sealing region between the conveyor element and the conveyor chamber element along a maximum overall extent of the sealing region, particularly along a maximum circumferential extent between the conveyor element and the conveyor chamber element.

Aspects are provided for positive displacement pumps and methods and systems for controlling such pumps to provide alerts based on user configurable tubing usage limits. A pump may include a user interface, a memory storing processor executable instructions, and a processor coupled with the user interface and the memory and configured to execute the instructions to receive a configuration of a tubing usage limit via the user interface. The processor may be configured to operate the pump according to a program. The processor may be configured to measure a tubing usage during pump operation. The processor may be configured to generate an alert when the tubing usage reaches the tubing usage limit.

A pump container includes: a container body in which contents are accommodated; a pump unit which is coupled to the top part of the container body and ejects the contents accommodated in the container body; a head part which is coupled to the top side of the pump unit and has a contents-moving hole that causes the contents delivered from the pump unit to move upward; a button part which is coupled to the top side of the head part, operates the pump unit according to a user's press, and has a nozzle formed on one side thereof for ejecting the contents, delivered via the contents-moving hole, to the outside; and a pressure-reducing check valve which is disposed between the pump unit and the contents-moving hole and opens or closes the contents-moving hole according to a press on the button part.