Class / Patent application number | Description | Number of patent applications / Date published |
417477200 | Cassette | 23 |
20080199337 | ADMINISTRATION SET WITH TWO KEYS - A flow set for administration of liquid when using a liquid pump is disclosed. The flow set of the present invention permits identification of the flow set by a liquid pump that uses this flow set and prevention of pumping tube-segment over stretching. | 08-21-2008 |
20080240951 | SYSTEM AND METHOD OPERABLE TO PREVENT TUBING DISPLACEMENT WITHIN A PERISTATLTIC PUMP - Embodiments to the present invention provide a peristaltic pump. This peristaltic pump includes a flexible flow path, an exterior casing, an elastomeric member, and a number of rollers driven by a motor. The exterior casing and elastomeric member have a first and second annular recess, respectively. An annular flow path guide is formed when the exterior casing and elastomeric member are mechanically coupled. Rollers move along the annular flow path to compress and release the flexible flow path and in so doing draw fluid through the flexible flow patch to achieve pumping action. Mechanical guides proximate to the first annular recess and second annular recess prevent relative motion between the first annular recess and second annular recess ensuring that the flexible flow path remains in place. | 10-02-2008 |
20080253911 | Pumping Cassette - A pump cassette is disclosed. The pump cassette includes housing. The housing includes at least one fluid inlet line and at least one fluid outlet line. Also, the cassette includes at least one reciprocating pressure displacement membrane pump within the housing. The pressure pump pumps at least one fluid from the fluid inlet line to at least one of the fluid outlet line. Also, the cassette includes at least one mixing chamber within the housing. The mixing chamber is fluidly connected to the fluid outlet line. | 10-16-2008 |
20080253912 | Pumping Cassette - A pumping cassette, the cassette includes a housing. The housing includes at least one fluid port and at least one air vent port. The air vent port vents a fluid source outside the housing. The pumping cassette also includes at least one reciprocating pressure displacement membrane pump within the housing. The pump pumps fluid. | 10-16-2008 |
20090016915 | Pump, especially for the blood treatment - The invention relates to a pump, especially usable as a peristaltic pump in an apparatus for blood treatment, wherein it is provided with at least a hammer element which interacts with at least one tube portion in which a fluid to be pumped flows and with motion means for said hammer element which push the hammer element against said tube portion so as to press it, the value of the stroke executed by said element not allowing the complete crushing of the tube itself. | 01-15-2009 |
20090035165 | Addressable Multi-Channel Peristaltic Pump - The present invention provides an addressable multi-channel peristaltic pump. According to the invention, this pump design allows for selection and operation of one or more pump heads on a drive shaft, while locking other non-selected pump heads in a stationary position. It is possible to operate the multi-channel pump using a limited number of motors, preferably two motors: a selector motor and a dispense motor. Thus, the pump provides for pumping or dispensing of one or more fluids without the need for multiple pumps. Likewise, compared with typical single motor multi-channel systems, where all pump heads on the drive shaft must rotate at the same time, the present invention provides for selective dispensing of one or more fluids. The pumps of the present invention are suitable for any multiple fluid transfer application, including in automated multi-channel reagent dispensing systems, such as nucleic acid purification systems. | 02-05-2009 |
20090053085 | Peristalitic pump assembly and method for attaching a cassette thereto - A peristaltic pump assembly includes a housing having a cassette receiving portion defined therein, a securing shaft positioned within the cassette receiving portion, and a cassette including a tube disposed therein selectively engageable with the cassette receiving portion. A knob removably engages a portion of the securing shaft and includes a tab extending therefrom configured to contact and compress the tube when in a disengagement position. | 02-26-2009 |
20090087326 | PERISTALTIC PUMP ASSEMBLY - 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. | 04-02-2009 |
20090087327 | PERISTALTIC PUMP AND REMOVABLE CASSETTE THEREFOR - A removable cassette for a peristaltic pump includes a cassette body and an occluder disposed at least partially in the cassette body and configured to be movable between an occluding position and a non-occluding position. The occluder includes an occluder body and an anti-ejection member integrally formed on the occluder body. The anti-ejection member is configured to substantially prevent the removal of the cassette from the peristaltic pump when the occluder is in the non-occluding position. | 04-02-2009 |
20090162228 | Guide element for a peristaltic pump - A guide element for a peristaltic pump includes a base and a plurality of spindles established on a surface of the base. The spindles are positioned substantially normal to the surface of the base and project outward from the surface. The spindles are also configured to locate a journal formed in a respective one of a plurality of rollers. The guide element is configured to guide the rollers when the rollers are rotating. | 06-25-2009 |
20090196776 | ROTARY AXIAL PERISTALTIC PUMPS AND RELATED METHODS - This disclosure concerns rotary axial peristaltic pumps, related methods and components. The rotary axial peristaltic pump generally includes a platen having a platen surface, a tube positioned adjacent to the platen surface, a cam that rotates about a rotational axis and a cam surface that is spaced apart from the platen surface and a plurality of tube compressing fingers. The fingers move axially back and forth in sequence to sequentially compress segments or regions of the tube against the platen surface, thereby causing peristaltic movement of fluid through the tube. The fingers move back and forth on axes that are substantially parallel to the axis about which the cam rotates. | 08-06-2009 |
20100329910 | Roller pump - The invention relates to a roller pump consisting of a stator with a pump bed formed therein and a rotor for acting on a hose inserted into the pump bed in arcuate form. In accordance with the invention, the ends of the tube guided out of the pump bed cross. | 12-30-2010 |
20110300010 | PERISTALTIC PUMP ASSEMBLIES, TUBING CASSETTES, AND SYSTEMS INCORPORATING SUCH PUMP ASSEMBLIES - 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. | 12-08-2011 |
20120020822 | PERISTALTIC 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. | 01-26-2012 |
20120294743 | TUBE PUMP AND TUBE STABILIZER - A tube pump comprises a rotor configured to have a roller and to hold the roller to be able to make an orbital motion along the inner circumferential surface of the cap. The rotor includes a disk part which holds the roller on a base side, and a tube press member that engages with the disk part so that the tube does not move to the base side with respect to the disk part, seals a gap formed with respect to the inner circumferential surface of the cap, and is capable of rotating along an outer circumferential part of the disk part is provided at the outer circumferential part of the disk part. | 11-22-2012 |
20130071272 | PERISTALTIC PUMP CASSETTE AND METHOD OF INSTALLING SAME - A peristaltic pump assembly comprises a pump and a removable cassette. The pump includes a pumping mechanism portion having opposed inner and outer walls defining a slot opening therebetween, and further having a cassette mounting pin extending at least partially across the slot opening. The removable cassette includes a cylindrical hinge journal and a mounting channel merging in a radial direction with the hinge journal, whereby the cassette is mounted on the mounting pin by inserting the removable cassette into the slot opening between the inner and outer walls of the pumping mechanism portion in a radial direction of the mounting pin such that the mounting pin is passed through the mounting channel and received by the hinge journal. The mounting pin and hinge journal are configured to allow the removable cassette to rotate about the mounting pin into and out of an installed position. | 03-21-2013 |
20130115120 | PERISTALTIC PUMP ASSEMBLIES AND SYSTEMS INCORPORATING SUCH PUMP ASSEMBLIES - 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. 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. | 05-09-2013 |
20130243631 | UNIFORM FLOW DISPLACEMENT PUMP - A displacement pump comprising a pump assembly and a cassette assembly. The pump assembly includes upper and lower housing portions that define a cavity, an arm disposed in the cavity, a roller attached to the distal end of the arm, and a motor attached to the proximal end of the arm for rotating the arm. The cassette assembly is removably disposed in the cavity and comprises upper and lower cassette housing portions that form an annular compression surface with a channel therein. A hollow compression tube having a flange extending along a length thereof is secured to the compression surface by the flange being engaged with the channel. As the motor rotates the roller arm, the roller presses the compression tube against the compression surface to create a moving occlusion of the compression tube for pushing fluid through the compression tube. | 09-19-2013 |
20140010691 | System and Method for Pumping Fluid Using a Pump Cassette - A system and method for pumping fluid using a pump cassette. The system includes a control assembly for operating the pump cassette. A force assembly having a movable member is capable of applying force to the pump cassette to press the pump cassette against the control assembly. The movable member may be an expandable member, such as a bladder. | 01-09-2014 |
20140199193 | BLOOD TREATMENT SYSTEMS AND METHODS - The present invention generally relates to hemodialysis and similar dialysis systems, including a variety of systems and methods that would make hemodialysis more efficient, easier, and/or more affordable. One aspect of the invention is generally directed to new fluid circuits for fluid flow. According to one aspect, a blood pump is configured to pump blood to a dialyzer of a hemodialysis apparatus, the blood pump comprising a pneumatically actuated or controlled reciprocating diaphragm pump. In an embodiment, the diaphragm of the pump comprises a flexible membrane formed or molded to generally conform to a curved inner wall of a pumping chamber or control chamber of the pump, wherein the diaphragm is pre-formed or molded to have a control side taking a convex shape, so that any elastic tension on the diaphragm is minimized when fully extended into a control chamber of the pump. | 07-17-2014 |
20160061198 | INFUSION PUMP CASSETTE AND INFUSION PUMP - The present invention is related to an infusion pump cassette to deliver fluids with a tube and the like, and obtains a configuration for switching between a free flow state and a lock state in a simple manner by using components which are originally required for liquid infusion. There are provided a ring | 03-03-2016 |
20160123320 | PULSELESS ROTARY PERISTALTIC PUMP - 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. | 05-05-2016 |
20160144090 | AUTO LOADING AND UNLOADING PERISTALTIC PUMP APPARATUS - A peristaltic pumping apparatus for use in blood processing procedures, comprising: a pump rotor rotatable about a rotational axis and a pump raceway circumferentially spaced about the axis; a pump cap disposed atop the pump rotor, the pump cap having a finger configured to engage a tubing loop of a length of tubing at a time of loading the tubing and guide the tubing loop within the raceway along the length of the tubing loop; and wherein the pump cap further comprises a tensioning wall disposed laterally opposite the finger, the tensioning wail configured to engage a length of the tubing loop at a time of unloading the tubing and provide tension to the tubing length as the tubing loop exits the raceway. | 05-26-2016 |