Abstract: Pump heads for peristaltic pump assemblies are provided. For example, a pump head for a peristaltic pump comprises an occlusion bed, a rotor guide, a rotor assembly positioned between the occlusion bed and the rotor guide, and a pathway for tubing. The pathway comprises an inlet portion, an outlet portion, and a connecting portion that connects the inlet and outlet portions. The inlet portion is defined between the occlusion bed and the rotor guide, the outlet portion is defined between the occlusion bed and the rotor guide, and the connecting portion is defined between the occlusion bed and the rotor assembly. Further, the occlusion bed is movable with respect to the rotor guide and the rotor assembly. In exemplary embodiments, the pump head urges fluid flow through the tubing to supply a cooling fluid to a medical probe assembly for delivering energy to a patient's body.

Abstract: An apparatus, method, and system for retaining tubing used in a peristaltic pump. The apparatus includes tubing retention device usable with a peristaltic pump, the tubing retention device including a movable tubing retainer having a tubing engaging portion capable of engaging with a first surface of a tube and a track portion for movably supporting the tubing retainer. At least one of the movable tubing retainer or the track portion has a surface formed of or at least partially coated with a friction reducing coating. The apparatus further comprises a second tubing engaging portion capable of engaging with a second surface of the tube and a biasing member biasing the movable tubing retainer towards the second tubing engagement portion. Engagement of the tubing retainer and the second tubing engaging portion reduces longitudinal movement of the tube.

Abstract: A fluid delivery tube bracket is disclosed herein, comprising a central pocket formed by a rear wall, first and second end walls, and first and second side walls, the first end wall having a first slot configured to receive a first medical tube, and the second end wall having a second slot configured to receive a second medical tube. The first side wall includes a first port plug receiving portion configured to receive a first connector plug when in an open position, and the second side wall includes a second port plug receiving portion configured to support a second port plug when in a closed position. Additional product and method embodiments also are disclosed.

Abstract: In one embodiment, a door is used to provide uniform pressure to insert tubing into slots of a pump having walls that are narrower than the outer diameter of the tubing. In another embodiment, connectors are attached to receptacles on the pump, where the connectors insert and/or hold the tubing in slots of the pump. The connectors push the tubing into the slots while closing thereby covering the slots, which helps assure that the tubing is properly inserted into the slots. Optionally, the tubing may be partially affixed to the connectors so that detaching the connectors from the pump receptacles may remove the tubing from the slots. In one embodiment, as long as the connectors are connected to the pump receptacles properly, the tubing is properly inserted and/or retained in the slots.

Abstract: A peristaltic pump (1) including a tray, referred to as a pump body (3), which includes a substantially planar surface (32) against which a flexible tube (5) for the passage of fluid is intended to be positioned, and a system (2) for applying force including a plurality of support members (7), such as rollers, and drive elements for moving the support members against the tube in order to deform it against the pump body (3). The pump body (3) is movably mounted relative to the system (2) for applying force between a position spaced apart from the system (2) for applying force, and a position adjacent to the system (2) for applying force. The pump (1) also includes elements (36) for controlling the movement of the pump body (3) relative to the system (2) on the basis of a predetermined magnitude corresponding to the force applied to the tube.

Abstract: An infusion pump comprises peristaltic pump means with tubing comprising four zones. The first, most upstream, zone provides for an engagement element to engage the tubing during movement along the first zone, and the engagement element remains in engagement with the tubing during movement along the second and third zones. The fourth, most downstream, zone provides for an engagement element to disengage from the tubing during movement along the fourth zone. The length of each of the zones is shorter than the distance between the two neighboring engagement elements, and the sum of the second and third zone lengths is equal to the distance between the two neighboring engagement elements. The second zone cross-section is larger than the third zone cross-section, leading to a volume increase which is at least equal to a volume increase displaced in the fourth zone resulting from disengagement of an engagement element from the tubing.

Abstract: A high-throughput system for processing biological material that comprises: a tray that supports a functionally-closed fluid path subsystem comprising, a vessel for containing and enabling the biological material to separate into two or more distinct submaterials; one or more receptacles to receive one or more of the submaterials from the vessel; a filtration device; a conduit through which one or more submaterials are transported between at least the vessel and the filtration device; and a first engagement structure; a processing unit comprising, a pumping device for moving one or more of the submaterials between at least the vessel and the filtration device via the conduit; a second engagement structure corresponding to the first engagement structure; a locking mechanism for at least temporarily holding the tray in a fixed position relative to the processing unit; a control device that automatically starts and stops the pumping device in response to one or more commands.

Abstract: In at least one embodiment the present invention provides a vacuum pump assembly having a vacuum pump body defining a cylindrical internal pump chamber housing a rotary vane rotatable about an axis radially removed from the center of the cylindrical internal pump chamber, an inlet, at least one outlet, a rotary power source abutting the vacuum pump body and having a proximal surface fluidly communicating with the internal pump chamber by way of the at least one outlet; the rotary power source having a rotating shaft operably connected to the rotary vane, and an electronics housing positioned adjacent the vacuum pump body such that as the rotary vane is rotated a first abbreviated crescent shaped working space is defined in communication with the inlet and as the rotary vane continues to rotate a second abbreviated crescent shaped working space is defined in communication with the at least one outlet.

Abstract: An embodiment system and method for dispensing multiple dairy products includes a dispenser which houses two or more dairy product bases with different formulations, which may be combined with or without water to create a multitude of homogenous dairy beverages. The two or more dairy product bases may be mixed together first and then separately mixed with water, mixed together simultaneously with water, or mixed together without adding water. They may be mixed together with or without additional flavoring, ingredients, mineral or nutritional additives. The dispenser comprises a pump with a quick-release mechanism to allow for quick and clean maintenance of the system.

Abstract: The present disclosure relates to a cartridge assembly. The cartridge assembly includes an inflow cartridge and an outflow cartridge removably coupled to the inflow cartridge. An outflow cartridge and a surgical fluid management system are also disclosed.

Abstract: A cassette (1) that is insertable into an infusion pump for delivery of a fluid to a subject that has a housing with two ends for holding flexible tubing (75) through which the fluid is directed. The housing has an open area exposing the tubing, which engages a pumping mechanism when inserted into an infusion pump. An anti-flow valve mechanism (100) associated with the tubing or the cassette and present either in, on or near the housing is made up of a piston (103/105) and spring (110), where the spring biases the piston against the tubing to prevent fluid flow.

Abstract: An ink jet printing apparatus includes a first fixing member including a first coupling portion coupled to a cap-side end of a first pump tube and a second coupling portion coupled to a waste ink storage portion-side end of a second pump tube. The distance from a reference surface of a pump base to the first coupling portion is different from the distance from the reference surface of the pump base to the second coupling portion.

Abstract: A tube-positioning system for loading tubing into a peristaltic pump includes a shell configured to slidably fit onto, and be releasably secured relative to, an exterior housing of a peristaltic pump. A pair of guides protrude from an upper portion of opposite side walls of the shell with each guide configured to releasably mount a first tube segment to extend between the guides.

Abstract: A blood-pumping device comprises a cavity with a U-shaped wall comprising two straight regions connected by an arch-shaped region and a U-shaped tube aligned with the U-shaped wall of the cavity to provide a support for the U-shaped tube, wherein the U-shaped tube comprises two straight regions connected by a semicircular region. The blood-pumping device further comprises an arm rotatable about a center point of the semicircular region, wherein the arm holds two wheels a distance from each other such that upon rotation of the arm the wheels roll along the U-shaped tube while putting pressure on the U-shaped tube, wherein the arch-shaped region of the U-shaped wall of the cavity comprises a recessed portion so that the wheels of the arm impose less pressure on the tube at the recessed portion and upon rotation of the arm generates a pulsating blood flow.

Abstract: A flexible tube portion for an irrigation line connected to a supply of fluid for surgical or dental use is disclosed, wherein the flexible tube portion cooperates with rollers of a peristaltic pump for distributing fluid, which includes a particular structure which, between two free ends thereof, define a distance, which, combined with the length of the tube portion, gives the tube portion a determined profile enabling its positioning directly underneath the raceway of the rollers of the pump. Also disclosed is a peristaltic pump including a plurality of rollers that roll over a flexible tube portion of an irrigation line connected to a supply of fluid for surgical or dental use, which includes a certain structure for receiving the flexible tube portion in front of the plane in which the rollers move, then bringing the flexible tube portion underneath the rollers, and pressing the tube portion against the rollers.

Abstract: A peristaltic pump assembly and system that facilitates reliable and efficient engagement and removal of a flexible tube. A stator is pivotally retained on a structure and cooperatively operated by a lever arm and cam to engage and disengage the stator from the tube and a corresponding rotor. The stator pivots at a point distal from a point of rotation of the rotor and the lever arm moves about a fixed rotation axis to engage and disengage the stator with the tube relative to the rotor.

Abstract: The invention relates to a peristaltic pump (1) for conveying a medium conducted in a hose, having a housing (2) and having a plurality of squeezing elements (3) which press the hose, so as to squeeze the hose, against the active surface (4a) of a counter bearing (4) and thereby convey the medium in the hose onward in the conveying direction, wherein the spacing (d) between the squeezing elements (3) and the active surface (4a) of the counter bearing (4) is variable.

Abstract: Provided is a roller pump that can easily install/remove an elastic tube and appropriately control a discharge flow rate. The roller pump includes a pump slide that is connected to a pump block cover via two slider links and restricts an arrangement of the elastic tube by an inner peripheral surface; a pump block cover that operates an opened state and a closed state of the pump slide; a first slider link that has a substantially circular contact surface in contact with the second slider link, having one end rotatably connected to the pump slide using a support pin and the other end rotatably connected to the pump block cover using a support pin; and a second slider link that has a substantially circular contact surface in contact with the first slider link and is rotatably connected to a fixed part of a base using a support pin.

Abstract: A peristaltic pump assembly includes a pump body including a mounting pin coupled thereto. A removable cassette is slidably received on the mounting pin and is secured to the pump body via a retaining feature. The mounting pin is also configured to allow the removable cassette to rotate into and/or out of an installed position, or to position(s) therebetween.

Abstract: A flexible tube has a first portion and a second portion located close to each other in the vicinity of an opening of an accommodating case. A pressing member moves from the first portion to the second portion along the tube while pressing a portion of the tube. An assistant member is provided in the vicinity of the opening of the case. The assistant member has an assistant surface. When the pressing member passes the vicinity of the opening of the case, the assistant member transfers the pressing member from the second portion to the first portion via the assistant surface. This structure ensures a silent operation of the tube pump.

Abstract: A spring mounted tube pressing member for peristaltic pumps allows loading and unloading of an elastic tube section between the tube pressing member and a continuously revolving rotor assembly by selectively moving between a locked position for fluid transfer and an open position for unhindered mounting and demounting of the tube section or a replaceable tube cassette. Not only is the pressure on the tube pressing member adjustable by the spring used, its dynamic pressure distribution on the tube section also prolongs the tube flex life and reduces fluid back mixing and pulsation in the tube.

Abstract: A peristaltic pump assembly includes a pump body and a cassette removably attached thereto, wherein the cassette includes a race configured to provide a compression surface for a tube supported by the cassette. A roller assembly is operatively connected to the pump body, wherein the roller assembly includes a plurality of rollers configured to apply a predetermined force to the tube, thereby compressing the tube against the race. The peristaltic pump assembly further includes a regulator disposed in the pump body and operatively connected to the cassette, where the regulator is configured to regulate the predetermined force applied to the tube.

Abstract: Peristaltic pump assemblies in which the closing and opening of a pivoting or sliding door is coordinated with movement of the occlusion bed toward and away from the rotor assembly to engage and disengage tubing within the occlusion pathway are disclosed. Linkage mechanisms provided by the interaction of cam surfaces with rollers, as well as bar linkage mechanisms, are disclosed. The linkage mechanism, in addition to providing precise displacement of the occlusion bed, may also provide an over-center feature that enhances safety and pump operation when the door is in a closed position. Latching mechanisms and sensors may be incorporated. Control consoles incorporating such peristaltic pump assemblies are described. Adaptive components such as tubing cassettes routing aspiration and/or infusion tubing in a predetermined configuration to mate with occlusion pathways in aspiration and/or infusion pump assemblies provided in various types of medical devices and control consoles are also provided.

Abstract: A peristaltic pump assembly includes a pump body including a mounting pin coupled thereto. A removable cassette is slidably received on the mounting pin and is secured to the pump body via a retaining feature. The mounting pin is also configured to allow the removable cassette to rotate into and/or out of an installed position, or to position(s) therebetween.

Abstract: An improved peristaltic pump whereby the elastomeric tubing communicates with the peristaltic pump in a way that allows for axial movement of the tubing thereby extending the flex life of the pump tubing. A tubing element is fitted with a flange that allows tension to be applied to the tubing in a way that changes depending upon the location of the rotor at any given time. The tension can be applied via an elastic material located between the flange and the housing or between the housing and a device that communicates with the flange. The dynamic tension reduces the amount of stress on the tubing material when the rollers first engage the tubing on the suction side of the pump and when they depart the tubing on the discharge side of the pump. The invention is particularly useful for materials that have limited axial flexibility and for those with very large axial flexibility.

Abstract: A peristaltic pump is provided that simplifies the loading of tubing and automatically self-centers the tubing relative to the pump wheel, wherein the pump includes an elongated arm having slotted pinch forks for engaging the tubing. The pinch forks are arranged substantially tangential to the pump wheel to reduce tubing kinking. The pump further includes a spring-loaded clamp that moves the elongated arm between engaged and disengaged positions, the clamp optionally including a sensor element used to detect when the pump is ready for operation.

Abstract: A flexible tube has a first portion and a second portion located close to each other in the vicinity of an opening of an accommodating case. A pressing member moves from the first portion to the second portion along the tube while pressing a portion of the tube. An assistant member is provided in the vicinity of the opening of the case. The assistant member has an assistant surface. When the pressing member passes the vicinity of the opening of the case, the assistant member transfers the pressing member from the second portion to the first portion via the assistant surface. This structure ensures a silent operation of the tube pump.

Abstract: A peristaltic hose pump has a rotor which is rotatable by a drive shaft as well as a support element which extends along a part of the rotor periphery. A flexible hose is inserted between the support element and the rotor. The support element is movable in the direction toward the rotor by rotation of the drive shaft.

Abstract: A peristaltic pump includes occluding surfaces rotatably supported by a support, an occlusion having an occlusion surface and a drive system configured to rotate occluding surfaces about a common axis. At least one of the support and the occlusion is movable towards the other of the support and the occlusion. The drive system is coupled to at least one of the support and the occlusion so as to move at least one of the support and the first occlusion.

Abstract: A flexible tube has a first portion and a second portion located close to each other in the vicinity of an opening of an accommodating case. A pressing member moves from the first portion to the second portion along the tube while pressing a portion of the tube. An auxiliary member is provided in the vicinity of the opening of the case. The auxiliary member has an auxiliary surface. When the pressing member passes the vicinity of the opening of the case, the auxiliary member transfers the pressing member from the second portion to the first portion via the auxiliary surface. This structure ensures a silent operation of the tube pump.

Abstract: A hose cartridge for a peristaltic pump comprises a cartridge housing provided with a lateral recess. The recess is delimited at least partially by an element having essentially the shape of a segment of a circle. A roller wheel of the peristaltic pump can engage that recess once the cartridge is attached to the peristaltic pump. The cartridge housing is provided with two support arms, and a groove extends from one of the support arm along three outer side faces of the cartridge housing to the other support arm. The ends of the support arms are provided each with a hose take-up member for retaining stoppers attached to a hose section. Such a hose cartridge is of very compact design ensures an easy handling.

Abstract: A peristaltic pump 10 for use in ophthalmic surgery includes a housing 12, a pump head 14 having plurality of rollers 16, a backing plate 18 attached to the housing 12, and a length of surgical tubing 50. The rollers 16 and backing plate 18 cooperate to pinch the length of surgical tubing 50 to peristaltically pump fluids from a surgical site to a collection bag 64. At least one of the pump head 14 and the backing plate 18 is moveable, during operation of the pump 10, from a tubing pinched position to a tubing vent position. This movement allows the tubing 50 to be vented by removing the pinched closure of the tubing 50.

Abstract: An occlusion for use in a peristaltic pump includes independently movable occlusion fingers. The fingers are integrally formed as a single unitary body.

Abstract: A clamp assembly for flexible tubing including a housing, at least one movable slide disposed within the housing, an opening defined between each side of the at least one slide and the housing for receiving flexible tubing, and a control element, rotation of the control element displacing the at least one slide in a predetermined direction to facilitate insertion of flexible tubing in the respective opening.

Abstract: A peristaltic fluid pump having a suction side and a pumping side. The pump includes a pump housing having a mainly arcuate support surface, a flexible tube extending along this surface, a rotor having two opposite rollers for during operation rolling over the flexible tube along an entrance section where the tube is successively compressed, a pumping section extending across an angle of an arc of less than 180°, and an exit section where the compression successively ends, and a motor for during operation making the rotor rotate. The arcuate support surface is shaped in such a way that the rearmost and foremost rollers do not operate in synchronous phase opposition during their passage of the entrance and exit section. The peristaltic fluid pump is capable of pumping a fluid with less pressure difference and compressive pulsations in the fluid than previously known, making it especially suitable for pumping a patient's blood through a dialyzer.

Abstract: A clamp assembly for flexible tubing including a housing, at least one movable slide disposed within the housing, an opening defined between each side of the at least one slide and the housing for receiving flexible tubing, and a control element, rotation of the control element displacing the at least one slide in a predetermined direction to facilitate insertion of flexible tubing in the respective opening.

Abstract: A tube pump (1A) of the present invention is provided with a main body (2) to which a tube (100) is attached, a rotor (5), an oscillator (6) located so as to touch an outer circumferential face of the rotor (5), and a plurality of rollers (10) mounted to the rotor (5) for pressurizing and thereby squeezing the tube (100). The oscillator (6) is essentially shaped like a rectangular plate, and is formed by laminating an electrode, a piezoelectric element, and a reinforcing plate. When an alternating current voltage is applied to the piezoelectric element, the oscillator (6) oscillates longitudinally in the direction of the length at minute amplitude as the piezoelectric element expands and contracts. The rotor (5) receives a frictional force and a pressing force from a convex portion (66) when the oscillator (6) expands, and the rotor (5) rotates as it repetitively receives the frictional force and the pressing force.

Abstract: A peristaltic pump for pumping a liquid, such as a juice concentrate, includes a rotor assembly attached to a housing, a band attached to the housing and surrounding at least a portion of the rotor assembly A tube is positionable between the band and the rotor assembly. The position of the band can be adjusted relative to the rotor assembly to adjust the pressure applied to the tube by the band and the rotor assembly. The rotor assembly includes rollers therein for pumping concentrate from a reservoir by drawing a vacuum.

Abstract: A peristaltic fluid pump having a suction side and a pumping side. The pump includes a pump housing having a mainly arcuate support surface, a flexible tube extending along this surface, a rotor having two opposite rollers for during operation rolling over the flexible tube along an entrance section where the tube is successively compressed, a pumping section extending across an angle of an arc of less than 180°, and an exit section where the compression successively ends, and a motor for during operation making the rotor rotate. The arcuate support surface is shaped in such a way that the rearmost and foremost rollers do not operate in synchronous phase opposition during their passage of the entrance and exit section. The peristaltic fluid pump is capable of pumping a fluid with less pressure difference and compressive pulsations in the fluid than previously known, making it especially suitable for pumping a patient's blood through a dialyzer.