Entries |
Document | Title | Date |
20080213113 | Tubing holding device for roller pumps - A tubing holding device for a roller pump is disclosed. The tubing holding device is removable from the roller pump, slidably moveable and able to be opened to allow for easy exchange of tubing in roller pumps. The tubing holding device comprises a clamping mechanism that securely holds tubing in place. Tubing of various sizes may be used within a roller pump by selecting the appropriately sized tubing holding device, or by using a tubing holding device, such as one embodiment disclosed, which may be adjustable for different sizes of tubing. Roller pumps including the tubing holding devices, and methods of loading such roller pumps are also disclosed. | 09-04-2008 |
20080247892 | LIQUID TRANSFER DEVICE AND SUCTION UNIT - A liquid transfer device that includes: a plurality of reservers that each store therein a liquid; a plurality of elastic tubes that are linked to the reservers and retained by a tube guide; a rotation axis that is retained to be able to rotate; and a tube depressing member whose depressing section is fixed to the rotation axis for depressing the tubes with a helical-structured convex portion provided thereto. In the liquid transfer device, when the rotation axis rotates, the liquid starts to flow by the depressing section sequentially depressing the tubes in a direction from the reservers toward a flow-out side of the liquid. | 10-09-2008 |
20090053083 | METHOD AND DEVICE FOR OPERATING AN ELECTRIC PERISTALTIC HOSE PUMP - The invention relates to a method and to a device for operating an electric peristaltic hose pump, in particular a hose pump for transporting fluids in medical-technical devices, in particular extracorporeal blood treatment devices. In order to monitor the regular operation of a hose pump, the power consumption of the pump or a physical variable in correlation with the power consumption, in particular the pump flow, is monitored. The pump flow includes a periodically non-altering direct component which is superimposed on a periodically altering alternating component. In order to monitor the regular operation of the hose pump, the alternating component of the power consumption in relation to the direct component of the power consumption is monitored as whether it increases and/or decreases during blood treatment. | 02-26-2009 |
20090087325 | PERISTALTIC PUMP ASSEMBLY AND REGULATOR THEREFOR - 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. | 04-02-2009 |
20090285705 | Tube Pump And Liquid Ejection Apparatus - 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. | 11-19-2009 |
20100028179 | CHEMICAL LIQUID SUPPLYING APPARATUS - In a chemical liquid supplying apparatus, discharge accuracy of chemical liquid is enhanced, and durability of a flexible tube is enhanced. By the flexible tube incorporated into a pump housing, an interior of the pump housing is partitioned into a pump chamber, which communicates with a liquid inlet and a liquid outlet, and a drive chamber in which an incompressible, indirect medium is enclosed. Outer surfaces of end portions of the flexible tube are sealed by outer seal members, and their inner surfaces are sealed by inner seal members. Fastening cylindrical bodies disposed in the end portions of the flexible tube are radially expanded by wedge sleeves, whereby the outer and inner seal members are caused to closely contact with the flexible tube. | 02-04-2010 |
20100202907 | PERISTALTIC PUMP TUBING WITH STOPPER AND COOPERATIVE ROLLER ASSEMBLY HOUSING HAVING NO MOVING PARTS - A peristaltic pump system includes elastomeric pump tubing and a roller pump. The pump tubing has a pumping segment and an inlet segment. The inlet segment has an inlet segment outer diameter. The pumping segment has a pumping segment outer diameter less than the inlet segment outer diameter. The roller pump has a roller assembly and a roller assembly housing. The roller assembly is disposed within the roller assembly housing and engaged with the pumping segment within the roller assembly housing. The roller assembly housing has an inlet gap formed through the roller assembly housing. The inlet gap defines an inlet gap inner diameter smaller than the pumping segment outer diameter. The inlet gap is adapted to frictionally receive the inlet segment for aligning the pump tubing with a roller assembly and mitigate longitudinal movement of the pump tubing into the roller assembly housing. | 08-12-2010 |
20100322804 | PERISTALTIC PUMP PISTOL - The peristaltic pump streaming/spraying pistol comprises a shroud with a battery, a motor, and a hose. The hose is connected with a sinking weighted ball at one end and a streaming/spraying nozzle at another end. A wall and a rotating disc, which is at least partially surrounded by the wall, are inside the shroud. Equidistant rollers for pressing the hose are mounted on the rotating disc. Between the rollers and the wall, there is a pressing channel for the hose. When in use, the battery starts the motor to drive the rotating disc. At the same time, the rollers on the rotating disc continuously press the hose and rapidly extrude the air out of it, so that a negative pressure is created in the hose. Due to the atmospheric pressure, the liquid will enter the hose from sinking weighted ball and will stream/spray out from the discharge nozzle. | 12-23-2010 |
20120213653 | PERISTALTIC PUMP AND HOSE CARTRIDGE THEREFOR - A hose cartridge for removably mounting a hose on a peristaltic pump has a roller wheel for pumping a fluid through the hose in a closed loop encircling an opening through which the roller wheel extends when the hose cartridge is mounted. A method for mounting such a hose cartridge includes introducing a holding rod of the pump into a holding portion of the hose cartridge, and carrying out a rotational movement of the hose cartridge about an axis defined by the holding rod until the working position of the hose cartridge is reached. The holding rod and the fixing bar both thus extend substantially parallel to the rotation axis of the roller wheel. | 08-23-2012 |
20130011284 | PUMP MODULE, PUMP BASE MODULE AND PUMP SYSTEM - A module, a base module and a system which comprises a module and a base module includes a pump channel and a valve unit which is connected with the pump channel wherein a fluid can be pumped through the pump channel and the valve unit, wherein a first wall section of the valve unit is flexible. The pump module has a movable valve body arranged in the valve unit, wherein the valve body can occupy an idle position in which the valve body closes the valve unit to prevent fluid from passing through. The valve body can occupy an operating position in which the valve body allows the fluid to flow through the valve unit and in which the valve body can be put in operating position through a deformation of the first wall section of the valve bodies so that the fluid can flow through the valve unit. | 01-10-2013 |
20130052063 | TUBE ACCOMMODATION OF A ROLLER PUMP - A peristaltic pump for medical purposes includes a pump casing in which a tube accommodation chamber is formed. In one embodiment, a pump head is rotatably mounted in the tube accommodation chamber. A tube unit is adapted to be inserted in the tube accommodation chamber such that a tube of the tube unit is engaged with the pump head in a manner to at least partially encompass the pump head. For this purpose, a tensioning device is arranged at the pump casing. The tensioning device cooperates with the tube unit so as to tension the tube around the pump head. The tensioning device may include a lever mechanism, wherein a lever element of the lever mechanism simultaneously forms or comprises a protective cap for at least partially covering the tube accommodation. | 02-28-2013 |
20130287613 | PERISTALTIC MICROPUMP AND RELATED SYSTEMS AND METHODS - A peristaltic micropump comprising one or more conduits configured to transfer one or more pumped fluids, wherein each conduit comprises: an inlet ( | 10-31-2013 |
20140003985 | LID APPARATUS FOR THE PIVOTABLE SUPPORT OF A LID ON A MEDICAL DEVICE FOR EXTRACORPOREAL BLOOD TREATMENT; MEDICAL DEVICE FOR EXTRACORPOREAL BLOOD TREATMENT WITH LID APPARATUS | 01-02-2014 |
20140010690 | TUBE ROLLER PUMP INCLUDING A PIVOTABLE TUBE SUPPORT AND MEDICAL DEVICE FOR EXTRACORPOREAL BLOOD TREATMENT - Tube roller pumps for a medical device for extracorporeal blood treatment are disclosed. The pumps include a pump housing having a bent bearing surface and a rotor being rotatable inside the bearing surface, wherein a tubing segment can be introduced between the bearing surface and the rotor in the form of a loop. At the pump housing a stationary first receiving portion for accommodating one end of the loop-shaped tubing segment and a rocker arm including a second receiving portion for accommodating the other end of the loop-shaped tubing segment are provided, wherein the rocker arm is rotatable about a pivoting axis so that the second receiving portion with the tubing segment can be brought into at least two different positions and that a first position represents a threading position and a second position represents an unthreading position for the tubing segment. Medical devices for extracorporeal blood treatment including such tube roller pumps are also disclosed. | 01-09-2014 |
20140037479 | PERISTALTIC PUMP TUBING WITH STOPPER AND COOPERATIVE ROLLER ASSEMBLY HOUSING HAVING NO MOVING PARTS - A peristaltic pump system includes elastomeric pump tubing and a roller pump. The pump tubing has a pumping segment and an inlet segment. The inlet segment has an inlet segment outer diameter. The pumping segment has a pumping segment outer diameter less than the inlet segment outer diameter. The roller pump has a roller assembly and a roller assembly housing. The roller assembly is disposed within the roller assembly housing and engaged with the pumping segment within the roller assembly housing. The roller assembly housing has an inlet gap formed through the roller assembly housing. The inlet gap defines an inlet gap inner diameter smaller than the pumping segment outer diameter. The inlet gap is adapted to frictionally receive the inlet segment for aligning the pump tubing with a roller assembly and mitigate longitudinal movement of the pump tubing into the roller assembly housing. | 02-06-2014 |
20140127063 | Roller Pump with Dynamic Occlusion Adjustment - A roller pump including a drive shaft, a motor, a roller head assembly, a stator housing, and an occlusion adjustment assembly. The drive shaft is coupled to the motor. The roller head assembly includes a hub, a slide body, and a roller. The hub is mounted to the drive shaft, and maintains the slide body and the roller. The stator housing forms a raceway receiving surface. The occlusion adjustment assembly includes an actuator knob, an actuating structure, and a ground shaft. The actuating structure interfaces with the slide body, and thus the roller, with rotation of the knob. The ground shaft supports the knob and is rotationally isolated from the drive shaft. A user and optionally a control system can adjust occlusion while the pump continuously delivers a fluid medium. | 05-08-2014 |
20140234144 | TUBE PUMP, TUBE CLAMP, PERFUSION SET AND SYSTEM COMPRISING A TUBE PUMP AND A TUBE CLAMP - The invention concerns a tube pump comprising a cradle ( | 08-21-2014 |
20140294633 | PERISTALTIC PUMP AND PUMPHEAD THEREFOR - A peristaltic pumphead is provided that has a pumping chamber within which is disposed a pressing element for exerting a peristaltic action on a tube extending within the pumping chamber, and an auxiliary chamber which in normal use is a dry chamber. The pumping chamber and the auxiliary chamber are arranged in fluid communication such that liquid which escapes from the tube into the pumping chamber flows from the pumping chamber into the auxiliary chamber. | 10-02-2014 |
20140294634 | PERISTALTIC PUMP AND PUMPHEAD THEREFOR - 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. | 10-02-2014 |
20140314602 | PERISTALIC PUMP - A peristaltic pump system including an arcuate pressing surface, a force element that applies an occluding force towards the pressing surface, a drive mechanism that drives the force element, a diaphragm disposed between the pressing surface and the force element that defines a pump cavity, an actuator strip disposed between the diaphragm and the force element that receives the occluding force, deflects to deform the diaphragm, and occludes the pump cavity, a support structure that retains the actuator and diaphragm positions relative to the pressing surface, and a restitution mechanism that recovers the open pump cavity configuration. | 10-23-2014 |
20140328707 | PUMP MODULE, PUMP MODULE AND PUMP SYSTEM - A module, a base module and a system which comprises a module and a base module includes a pump channel and a valve unit which is connected with the pump channel wherein a fluid can be pumped through the pump channel and the valve unit, wherein a first wall section of the valve unit is flexible. The pump module has a movable valve body arranged in the valve unit, wherein the valve body can occupy an idle position in which the valve body closes the valve unit to prevent fluid from passing through. The valve body can occupy an operating position in which the valve body allows the fluid to flow through the valve unit and in which the valve body can be put in operating position through a deformation of the first wall section of the valve bodies so that the fluid can flow through the valve unit. | 11-06-2014 |
20140356202 | PUMP ROLLER HEAD WITH PIVOTING ROLLERS AND SPRING ARMS - A roller assembly comprises a central section with a hub; a plurality of flexible arms coupled to the central section; a plurality of spring pins, one spring pin coupled to each of the plurality of flexible arms; 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. | 12-04-2014 |
20150064035 | EQUIPMENT FOR ROTATING A ROTOR OF A PERISTALTIC PUMP - The invention concerns a peristaltic hose pump and an equipment for the peristaltic hose pump. The pump includes a rotor configured to compress a hose/tube being positioned on the pump cavity inner perimeter. The rotor is coupled to a one end of a crankshaft of the pump body and the pump includes a device to receive an equipment for rotating the rotor manually. The equipment for rotating the rotor includes a connection point that is configured to connect the equipment to the pump. The equipment includes also weight configured to act as a counterbalance to the rotor in order to maintain the position of the rotor. | 03-05-2015 |
20160061199 | HOSE PUMP - A hose pump is provided having an elastically deformable hose ( | 03-03-2016 |
20160123317 | PERISTALTIC PUMP HAVING REDUCED PULSATION AND USE OF THE PERISTALTIC PUMP - The invention relates to a peristaltic pump ( | 05-05-2016 |
20190145398 | TUBE PUMP | 05-16-2019 |