A peristaltic pump may include a rotor rotatably mounted on a base and an occlusion bed mounted on the base and moveable toward and away from the rotor. The peristaltic pump may also include a lid hingedly mounted to the base along a first hinge axis including a mounting bracket extending perpendicularly relative to the first hinge axis. A linkage assembly connecting the occlusion bed and the lid may include a pair of curved arms hingedly mounted to the mounting bracket along a second hinge axis parallel to the first hinge axis and a cam connecting the pair of curved arms and having a cam surface facing the mounting bracket, the cam being hingedly mounted to the occlusion bed at an end opposite the second hinge axis. The mounting bracket abuts the cam surface and form a cooperative connection between the lid and the occlusion bed via the linkage assembly.

A sensor system for a volumetric pump operating according to the linear peristalsis principle includes at least one sensor unit; at least one sensor transmitter unit; and a sensor output signal processing unit. The sensor transmitter unit is arranged to apply a detection variable varying as a function of a travel position to the sensor unit along a predetermined travel along which a fixedly arranged sensor unit and a movably arranged sensor transmitter unit or a movably arranged sensor unit and a fixedly arranged sensor transmitter unit are moving relative to each other. The sensor unit is configured to output a detection signal corresponding to a travel position on the basis of the varying detection variable. The sensor output signal processing unit is arranged to receive the detection signal output by the sensor unit and discriminate at least three travel positions on the basis of the received detection signal.

Disclosed is a fluid isolating pump. The fluid isolating pump includes a rotating cage, one or more roller assemblies mounted on the rotating cage, a cam plate, and a non-rotating central shaft. The cage includes a front plate and a back plate connected by multiple connecting rods. Each roller assembly is rotatably attached to a corresponding connecting rod of the cage. Each roller assembly includes one or more arms rotatably attached to the connecting rod, a connecting bar coupled to the one or more arms, one or more levers rotatably attached to the connecting rod, one or more suspensions, and a roller. Each suspension is coupled to at least one arm and to at least one lever. The roller is coupled to the one or more levers. The cam plate includes multiple openings having a first end and a second end. The connecting rod of each roller assembly is configured to slide from the first end of the opening to the second end of a corresponding opening.

Disclosed herein is a peristaltic pump for medical applications comprising a motor, a rotor coupled to the motor, a housing in which the rotor is arranged and an opening and closing mechanism comprising a tube pressuring portion, a slider and a pivotable cover coupled to the housing and the slider. The opening and closing mechanism is accentuated by the pivotable cover, which pivotable cover is connected to the tube pressuring portion via elastic elements. The elastic elements are thereby connected via at least one adjustable element so that the tension or pretension in the elastic element can be adjusted to tube types and material, to the viscosity of the pumped fluid and to the amount of fluid that needs to be pumped.

A peristaltic pump that reduces electrical current flowing through a pumping tube segment includes a central rotor mounted on a central rotation axis, a shoe with a curved surface facing toward the central rotor, multiple rollers mounted along the circumference of the central rotor and the pumping tube segment positioned between the curved surface and the central rotor. Each roller of the plurality of rollers is a member of a roller group, each roller group includes at least two rollers, rollers in a particular roller group are physically located closer to each other than to rollers in other roller groups, and at least two rollers pinch a portion of the pumping tube segment against the curved surface through a full rotation of the central rotor.

Provided are an elastomeric-hose-compressing part, a cartridge, and a roller assembly for a pump head of a peristaltic pump, and a pump head for a peristaltic pump. The elastomeric-hose-compressing part includes a surface for compressing the elastomeric hose which has an arcuate shape along its length direction, wherein the surface for compressing the elastomeric hose is provided with flanges oppositely arranged on two side portions of the elastomeric-hose-compressing part in the width direction, the width direction of the elastomeric-hose-compressing part is perpendicular to the length direction, and the surface for compressing the elastomeric hose is formed by a continuous surface or by a plurality of surfaces sequentially arranged along the length direction. By providing flanges at two sides of the surface for compressing the elastomeric hose, the elastomeric-hose-compressing part as disclosed may reliably limit the elastomeric hose between the surface for compressing the elastomeric hose and the roller assembly of the peristaltic pump, which thus reduces abnormal abrasion of the elastomeric hose.

The invention provides a rotor for a peristaltic pump, the rotor comprising a body for rotation about an axis, the body having a first side and a second side, the body supporting a plurality of spaced first rollers extending from the body on the first side, the first rollers positioned at a first common radius from the axis, the body further supporting a plurality of spaced second rollers extending from the body on the second side, the second rollers positioned at a second common radius from the axis. The invention extends to a peristaltic pumping unit comprising such a rotor assembled with a first stator and a second stator, the first stator having one or more compressible fluid channels arranged to be compressed by said first rollers and the second stator having one or more compressible fluid channels arranged to be compressed by said second rollers. The invention also concerns a stator for a peristaltic pump, having a body with a planar surface and two or more fluid channels, each fluid channel having a compressible arcuate portion on or in the planar surface of the stator, the arcuate portions arranged to be compressed by a plurality of rollers mounted on a rotor, the arcuate portions each connecting to further portions of the fluid channel extending in a direction away from the planar surface such that the fluid channels take a three dimensional path within the body of the stator.

The present invention is directed to a peristaltic pump (1), comprising a rotary body (2) with a plurality of squeeze sections (3) arrange circularly distributed and moveable about a rotation axis (A), a tube carrier (4) for carrying a flexible tube (5) along an arcuate engagement section (6) arcuately surrounding the rotary body (2), and an actuator (7) for selectively moving the tube carrier (4) relative to the rotary body (2) between a pump position in which a flexible tube (5) carried by the tube carrier (4) be positioned in engagement between the engagement section (6) and at least one of the squeeze sections (3) to allow for a pumping action when moving the rotary body (2) about the rotation axis (A), and a release position in which the flexible tube (5) carried by the tube carrier (4) be disengage from the plurality of squeeze sections (3) to allow for free flow through the flexible tube (5). The present invention is further directed to a pump system comprising the peristaltic pump (1), a flexible tube (5) be functionally carried by the tube carrier (4), a product supply be fluidly connected to an upstream end of the flexible tube (5), and a product discharge section be fluidly connected to a downstream end of the flexible tube (5). Moreover, the present invention is directed to a method for pumping a fluid by use of the pump system (100).

A peristaltic pump comprises a rotor with rollers and first and second tracks mounted on opposites sides of the rotor. Each track is moveable between a first position adjacent the rotor and a second position spaced from the rotor. The tracks may be linked and moveable together so that as one track moves towards the rotor, the other moves away from the rotor and vice versa. In this way, a single pump can be used to provide two different modes of operation, e.g. pumping liquid when one track is adjacent the rotor and applying suction when the other track is adjacent the rotor.

A peristaltic pumphead comprising a pumphead housing accommodating a pumping tube, an end of the tube being provided with an end fitting having a through passage and an abutment shoulder and a threaded shank extending from the abutment shoulder into the tube the tube end abutting the abutment shoulder and being accommodated in an opening, in the pumphead housing, the abutment shoulder abutting the housing at the opening, and the end fitting being engaged by a retaining element to retain the abutment shoulder against the housing.