Abstract: Described is a method for regulating a volume of liquid delivered by a peristaltic pump and a peristaltic pump system that can be used to perform the method. The method includes sensing an ambient temperature of the peristaltic pump. The peristaltic pump includes a pump motor. At least one of a motor speed and a motor operation duration is determined from the sensed temperature, a selected volume of liquid to be delivered and a predetermined correspondence of the motor speed to ambient temperature. The pump motor is operated at the determined motor speed or for the determined motor operation duration to deliver the selected volume of liquid from the peristaltic pump.

Abstract: System for protecting and securing bags for bulk high pressure processing equipment including at least one tube provided with holes, covers for evacuating and connecting the ends of the tube or tubes, the tube or tubes being anchored to the covers, a protector for the bag adapted to lengthen the outlet path of the processed product once the depressurization of the equipment is produced, and a fitting for the protector for connecting the protector to the cover on the side from which the product in the bag comes out.

Abstract: A valve for a pneumatic system, has: a first enclosure defining a first chamber and a first connection port; a second enclosure defining a second chamber and a second connection port; a first shell subjected to a first pressure differential and movable from a default position to a reversed position via snap-through buckling upon the first pressure differential reaching a threshold; and a second shell having a shape different than a shape of the first shell, the second shell resiliently movable from an initial position to a deformed position when subjected to a second pressure differential, wherein a first flow rate of a fluid via the first connection port induces deformation of the second shell followed by a snapping of the first shell thereby generating a second flow rate greater than the first flow rate.

Abstract: In a blood transfusion system (a blood transfusion kit, a blood transfusion kit for emergency blood transfusion, or a method of using a blood transfusion kit), a flow path through which blood flows is formed using a tube having a channel therein. The flow path includes: a first path that connects an upstream path and a downstream path and has a leukocyte removal filter removing leukocytes at an intermediate position of the channel and a second path that connects the upstream path and the downstream path and bypasses the leukocyte removal filter.

Abstract: An LVP that provides peristaltic pumping to removably couplable administration set tubing assemblies supplying medical infusate. The LVP includes a housing, a drive-train assembly, and a controller. The housing includes an assembly receptacle configured to receive an administration set tubing assembly. The drive-train assembly provides mechanical peristaltic movement within the assembly receptacle. The drive-train assembly includes a stepper motor located within the housing and a camshaft assembly, driven by the stepper motor and at least partially extending into the assembly receptacle. The camshaft assembly includes a unitary camshaft and a plurality of tube engaging members that cooperatively move according to rotation of the unitary camshaft. Further, the controller is located within the housing that controls operation of the stepper motor and the camshaft assembly.

Abstract: An apparatus for delivering a fluid to a subject through infusion tubing (22). The apparatus includes a tube cassette (20) for receiving the infusion tubing. The tube cassette has an anti-free-flow valve (26) configured to (i) occlude the infusion tubing, and (ii) be actuated by a force external to the tube cassette to terminate the occlusion of the infusion tubing. The tube cassette is configured to be removably coupled to a pump (24). The pump is configured to, as part of a pumping cycle for delivering the fluid to the subject, repeatedly (a) actuate the anti-free-flow valve to terminate the occlusion of the infusion tubing, and subsequently (b) release the anti-free-flow valve to occlude the infusion tubing. Other applications are also described.

Abstract: A fluid sensing apparatus and method for detecting pressure and a presence of a bubble within a fluid tube. The fluid sensing apparatus comprises a housing configured to receive a portion of the fluid tube and to house a pressure sensor and an ultrasonic transmitter. The pressure sensor is positioned adjacent the fluid tube and is configured to receive a pressure sensor signal, which correlates to a detected pressure differential within the fluid tube. A controller transmits a drive signal to the ultrasonic transmitter, which emits ultrasonic waves through a portion of the fluid tube and to the pressure sensor. The pressure sensor receives both the ultrasonic waves and the pressure sensor signal, and subsequently transmits an output signal to the controller. In a presence of the detected pressure differential or the bubble within the fluid tube, the output signal will exhibit a DC shift or a distortion of signal characteristics of the output signal, respectively.

Abstract: Micropump (10) including a support structure (14), a pump tube (16), and an actuation system (18) comprising one or more pump chamber actuators (28), the pump tube comprising a pump chamber portion (24) defining therein a pump chamber (26), an inlet portion (20) for inflow of fluid into the pump chamber, and an outlet portion (22) for outflow of fluid from the pump chamber. The inlet, outlet and pump chamber portions form part of a continuous section of tube made of a supple material. The one or more pump chamber actuators are configured to bias against the pump chamber portion to expel liquid contained in the pump chamber via the outlet portion, respectively to bias away from the pump chamber portion to allow liquid to enter the pump chamber via the inlet portion. The pump chamber portion has a cross-sectional area Ap in an expanded state that is larger than a cross-sectional area Ai of the pump tube at the inlet and outlet portions.

Abstract: Peristaltic micropump assemblies configured to pump fluid from a patient and/or deliver pharmaceutical agents to the patient are provided. In some embodiments, a micropump assembly can include a rotor configured to rotate about an axis and comprising a compressing member configured to rotate along a circumference, and a fluid chamber positioned at least partially around the circumference. The fluid chamber includes a round outer ring and a membrane attached to the outer ring and opposing an inner face of the outer ring. The compressing member is configured to compress the fluid chamber and move a fluid through the fluid chamber. The assembly can fit within a housing that is sized and shaped to be implanted in the patient. For example, the micropump assembly can be inserted into the patient's ocular cavity and configured to displace fluid from the patient's eye.

Abstract: The present invention relates to breastmilk pumps imitating the suckling mechanism of a baby's mouth.

Abstract: A peristaltic pump having at least first, second, and third stages is provided. The peristaltic pump includes a plunger, inlet and outlet valves, a spring, and an actuator. The plunger actuates toward and away from a tube, the inlet valve is upstream of the plunger, the outlet valve is downstream of the plunger, the spring biases the plunger toward the tube, and the actuator mechanically engages and disengages from the plunger. In the first stage, the inlet valve is opened and the plunger is actuated from the tube, in the second stage, the inlet valve is closed, the plunger is actuated toward the tube, and the actuator is mechanically disengaged from the plunger, and in the third stage, the outlet valve is opened. In the third stage or in a fourth stage, the actuator actuates the plunger toward the tube to discharge fluid downstream past the outlet valve.

Abstract: A peristaltic pump includes a plunger-cam follower, a tube receiver, a spring-biased plunger, a spring, a position sensor, and a processor. The plunger-cam follower engages the plunger cam to follow the plunger cam and to disengage from the plunger cam. The spring-biased plunger is coupled to the plunger-cam follower and the spring biases the spring-biased plunger toward the tube receiver. The position sensor determines a position of the spring-biased plunger when the plunger-cam follower is disengaged from the plunger came. The processor estimates fluid flow utilizing at least the position of the spring-biased plunger as indicated by the position sensor when the plunger-cam follower is disengaged from the plunger cam and the spring biases the spring-biased plunger against the tube.

Abstract: An infusion pump, driven by a camshaft with one or two cams, controls two sets of angularly aligned fingers phased within a sleeve, compressing two parallel flexible tube-sections, drawing fluid from a fluid source, yielding a combined continuous flow of fluid output from the two tube-sections as a function of the camshaft rotation.

Abstract: A method produces a porous, arched aluminum fluidization element for a diaphragm pump for fluidizing, covering and delivering pulverized products, such as pulverized coal, using inert gas at pressures of up to 7 MPa. The fluidization element ensures that fluidizing gas is supplied and homogeneously distributed in the pump lower region, and the contour of the space for pulverized materials may be advantageously designed in the diaphragm deflection area and optionally adapted to the diaphragm guide rod. In this way, a homogeneous and reversible deformation of the diaphragm is obtained with minor wear as far as possible. At the end of the delivery process of the diaphragm pump, the diaphragm is applied to the arched, half-shell-shaped fluidization surface in an extensively flat manner, and a small dead volume can be obtained, which results in minimal space for pulverized materials with a high delivery rate and little high-pressure gas loss.

Abstract: A pumping segment having a low shut-off force is disclosed. The pumping segment includes a tube having an interior surface with at least two notches on opposite sides of the interior surface.

Abstract: An infusion pump apparatus includes a length of resilient tubing removably loadable in an infusion pump having a housing, a pumping mechanism, and a pump door. A latch member is pivotally mounted to the pump door and cooperates with a latch pin fixed on pump housing. A free-flow protection device is biased to pinch the tubing closed to stop fluid flow. The latch member has a first range of pivotal motion in a latching direction for causing the latch member to engage with the latch pin to secure the door in a closed position and a second range of pivotal motion in the latching direction for causing the latch member to actuate the free-flow protection device to unpinch the tubing and allow flow. The latch member pivots through at least a portion of the first range of pivotal motion before beginning to pivot through the second range of pivotal motion.

Abstract: An electronic assembly includes a casing to conduct electricity flowing between at least some electronic components disposed within the casing. The electronic components include an ultrasonic transducer coupled to emit ultrasonic signals, and a battery to provide the electricity. A controller is coupled to the ultrasonic transducer and the battery, and the controller includes logic that when executed by the controller causes the electronic assembly to perform operations, including: instructing the ultrasonic transducer to emit the ultrasonic signals.

Abstract: Pump systems with pinch valves for surgical procedures. At least some of the example embodiments are pump systems including a stationary housing defining a front face. A tube support extends outwardly from the front face for aligning and supporting a first tube and a second tube. At least one pinch member is movable relative to the tube support by a power actuator operably coupled to the at least one pinch member and configured to have three orientations that define: a first arrangement of the pinch member relative to the tube support configured to pinch closed the first tube, a second arrangement of the at least one pinch member relative to the tube support configured to pinch closed the second tube, and a third arrangement of the at least one pinch member relative to the tube support configured to pinch closed neither the first tube nor the second tube.

Abstract: The present invention relates to devices and methods of operating the devices that contribute to curbing appetite and/or reducing food intake. In some embodiments, the methods and devices of the present invention include as intestinal/duodenal insert comprising an elongated member with at least one flow reduction element that can cause the stimulation of one or more biological signals of satiety. Some embodiments of the inserted device are anchored at the duodenal site by an anchoring member residing in the stomach, other embodiments of the device are stabilized at a targeted site by appropriate dimensions of length as well as one or more angled portions of the device that correspond to angled portions of the targeted site in the dodenum. Embodiments of the device exert effects by virtue of physical presence, as well as by more active forms of intervention, including release of bioactive materials and electrical stimulation of neurons.

Abstract: A peristaltic pump and related-method are disclosed that includes a cam shaft having a plunger cam, a plunger-cam follower that engages the plunger cam of the cam shaft, a tube receiver, a spring, a plunger, a position sensor, and a processor. The tube receiver receives a tube. The spring provides a bias. The plunger is biased toward the tube by the spring and the plunger is to the plunger-cam follower, such that expansion of the plunger cam along a radial angle intersecting the plunger-cam follower as the cam shaft rotates actuates the plunger away from the tube. The position sensor determines a position of the plunger and the processor estimates fluid flow within the tube utilizing the position of the plunger.

Abstract: The invention relates to a blood treatment device having at least one metering line which opens into a fluid circuit, wherein a conveyor module is arranged in the metering line and comprises a membrane pump and a valve which is arranged at the pressure side thereof and which can act both as a blocking valve and as a restricting valve.

Abstract: A medicament delivery device and method of use thereof. The device includes a sensor module and an injector module. The injector module is adapted to (i) be coupled to the sensor module during injection of a cannula and a needle into subcutaneous tissue and during delivery of the medicament and (ii) be removed from the sensor module after the delivery of the medicament.

Abstract: A pumping finger subassembly for a peristaltic infusion pump has a housing, a pinch member, a block member, and at least one biasing spring. The housing includes a transverse slot, a first side wall, and an open second side through which the pinch member and biasing spring(s) are inserted into the transverse slot. The block member includes a foot portion and a side wall portion. The foot portion is insertable into the housing through the open second side such that the block member is constrained against movement relative to the housing and the side wall portion of the block member opposes the first side wall of the housing, whereby the pinch member is supported on both lateral sides to prevent tilting of the pinch member.

Abstract: A pump device for delivery of at least one delivery means, particularly at least one fluid, with at least one drive unit and with at least one delivery device, particularly a delivery membrane comprising at least one, particularly at least substantially annular base body which is elastically deformable and comprises at least one delivery surface arranged on a delivery side of the base body and comprising at least one activation element for connection to at least one drive element of the drive unit, which is arranged on an activation side of the base body, the activation element being designed as a positive or non-positive element that cooperates with the drive element at least for the transfer of a driving force acting in a direction facing away from the activation side, by means of a positive and/or non-positive connection, particularly by means of a positive and/or non-positive connection without adhesive force.

Abstract: A feeding set for use with a peristaltic enteral feeding pump to deliver nutritional liquid fluid to a patient includes a container having nutritional liquid. A conduit assembly includes tubing placeable in fluid communication with the container and adapted for mounting on the enteral feeding pump. The tubing provides a fluid pathway for delivering the nutritional liquid from the container to a patient when the tubing is mounted on the enteral feeding pump. An identification member is mounted on the conduit assembly and has at least one characteristic of a nutritional liquid associated with the feeding set represented by the identification member. The identification member is positioned on the conduit assembly so as to permit automatic identification by the enteral feeding pump of the at least one characteristic of the nutritional liquid upon mounting the conduit assembly on the enteral feeding pump.

Abstract: A fluid pump device includes an elastically deformable conduit, multiple volume displacement elements, and a controller. During operation, the controller controls movement of the multiple volume displacement elements (such as compensation volume displacement elements and occluding volume displacement elements) with respect to the elastically deformable conduit at different times to cause flow of fluid in the elastically deformable conduit downstream to a recipient. The controller controls movement of the multiple volume displacement elements to volumetrically balance: i) an input flow rate of input fluid conveyed from a fluid source downstream to an input of the elastically deformable conduit, and ii) an output flow rate of output fluid delivered from an output of the elastically deformable conduit downstream to a recipient.

Abstract: A fuel injection pump pressurizes and injects fuel. A cam rotates about a rotational axis of the cam. A housing includes a cam chamber that houses the cam and a sliding chamber communicated to the cam chamber. A roller rotates while being in contact with a surface of the cam. A shoe reciprocates in the sliding chamber by rotation of the cam and is in contact with and slides on a surface of the roller. A plunger reciprocates with the shoe. A cylinder houses the plunger and includes a pump chamber to pressurize and feed the fuel by reciprocation of the plunger. A deformed section is a groove or a protrusion which extends in a direction of a rotational axis of the cam, on a part of a surface of the cam, and has a shape different from a cam profile of the cam.

Abstract: A fluid quality sensor for measuring a quality of a fluid comprises a measurement section mounted to an output side of a pump for the fluid.

Abstract: A peristaltic pump having at least first, second, and third stages is provided. The peristaltic pump includes a plunger, inlet and outlet valves, a spring, and an actuator. The plunger actuates toward and away from a tube, the inlet valve is upstream of the plunger, the outlet valve is downstream of the plunger, the spring biases the plunger toward the tube, and the actuator mechanically engages and disengages from the plunger. In the first stage, the inlet valve is opened and the plunger is actuated from the tube, in the second stage, the inlet valve is closed, the plunger is actuated toward the tube, and the actuator is mechanically disengaged from the plunger, and in the third stage, the outlet valve is opened. In the third stage or in a fourth stage, the actuator actuates the plunger toward the tube to discharge fluid downstream past the outlet valve.

Abstract: The present invention relates to a device and method for transferring rotational, mechanical motion into sinusoidal wave-like motion.

Abstract: A peristaltic pump (200) is proposed which comprises a first housing component (210) and a second loading component (230), said second loading component being at least partially contained within said first housing component and being axially movable with respect to said first housing component inside thereto. The second loading component further comprises at least a couple of rollers (235) which engage and squeeze a delivery tube (146) for delivering a fluid passing there through when, in operation, the second loading component is fully snapped into said first housing component. Moreover the second loading component comprises a guiding path (240) for guiding the delivery tube around said at least a couple of rollers towards an exit port (244) which is provided at a distal end surface of the second loading component. The present invention also relates to a patient set and to an injection system comprising said peristaltic pump, as well as to a method of operating said injection system.

Abstract: Embodiments of the invention include methods and structures for controlling developer critical dimension (DCD) variations across a wafer surface. Aspects of the invention include an apparatus having developer tubing and an internal cam. The internal cam is coupled to a fixed axis. A flexible divider is positioned between the developer tubing and the internal cam. The flexible divider is coupled to the internal cam such that rotation of the internal cam about the fixed axis is operable to change an inner diameter of the developer tubing.

Abstract: An air-bag type inflating device includes an elastic bag body and a sealing member; the sealing member has a first membrane, a second membrane and a third membrane, the second membrane is connected to the first membrane, the third membrane is stacked and arranged at a connecting location of the first membrane and the second membrane and disposed at an inner side of the first membrane; a unidirectional nozzle passage is formed between the first membrane and the third membrane, and capable of being optionally operated for opening or closing the first chamber and the second chamber. Accordingly, an opening/closing status of the unidirectional nozzle passage can be stably and precisely controlled after the bag body is pressed.

Abstract: A one-time use plastic disposable lockbox enclosing an infusion system including the infusion device, method of delivery such as tubing, and source reservoir such as a fluid bag or syringe is provided. The lockbox includes first and second thermoplastic shells joinable along a separation plane to define a housing. The housing carries an IV bag volume abutting a periphery of a filled standard IV bag to restrain movement of that IV bag along the separation plane and a pump volume abutting a periphery of an IV pump to restrain movement of that IV pump along the separation plane. A channel extends between the pump volume and an exterior of the housing to allow egress of a standard IV line from the housing.

Abstract: A pumping finger subassembly for a peristaltic infusion pump has a housing, a pinch member, a block member, and at least one biasing spring. The housing includes a transverse slot, a first side wall, and an open second side through which the pinch member and biasing spring(s) are inserted into the transverse slot. The block member includes a foot portion and a side wall portion. The foot portion is insertable into the housing through the open second side such that the block member is constrained against movement relative to the housing and the side wall portion of the block member opposes the first side wall of the housing, whereby the pinch member is supported on both lateral sides to prevent tilting of the pinch member.

Abstract: A disposable cartridge (20) for a peristaltic micro pump is disclosed. The cartridge comprises a housing (21) with an inlet connector (25) and an outlet connector (26). A fluid channel (23) extends in the housing (21) between the inlet and the outlet with a channel section (22) of the fluid channel (23) provided by a flexible tube (24). One or more openings are provided adjacent to the channel section (22) in the housing (21) allowing one or more pump engaging elements of a pump drive to engage the flexible tube (24), compressing the flexible tube (24) to pump fluid through the fluid channel (23). Sealing elements (31, 32) with double flange extensions (31a, 31b) having a first inner flange (31a, 32a) and a second outer flange (31b, 32b) are provided to seal at the connectors (25, 26) and fix the tube (24) in the housing (21).

Abstract: An infusion pump for delivering an intravenous (“IV”) fluid includes a housing comprising an actuation area that engages a portion of an IV tube. The actuation area includes a first end that receives the IV tube from a fluid container and a second end that provides the IV tube to a patient. The housing also includes a seal section located along a perimeter of at least a portion of the actuation area. The seal section includes a gasket rib positioned along the seal section and a tube channel configured to cradle the IV tube. The example infusion pump also includes a door connected to the housing and configured to engage the gasket rib to enclose the actuation area of the housing.

Abstract: A transfusion apparatus according to an embodiment includes a finger-type pump mechanism, the finger-type pump mechanism including a plurality of fingers, the plurality of fingers and a holding member sandwiching a passage composed of a flexible material, the holding member being arranged to face the plurality of fingers in an opposed manner, the finger-type pump mechanism depressing and elastically deforming a side face of the passage by a peristaltic motion reciprocating the plurality of fingers to send a liquid with which the passage is filled, the transfusion apparatus comprising: a pressure sensor provided to at least one of the plurality of fingers or the holding member; and a determination unit that determines presence or absence of bubbles in the passage based on pressure detected by the pressure sensor when a finger is depressing the passage.

Abstract: A novel caloric bypass device that is inserted through the oral cavity and into the digestive tract of a human is disclosed. The device is deliverable as either a unitary or modular structure that preferentially directs a significant volume of the high calorie fluidic components of the chyme through the digestive tract, preventing exposure to the absorptive tissues of the digestive tract and, in some forms, stimulates negative feedback to the patient when simple sugars and carbohydrates are consumed. Also disclosed is a novel method of reducing or restricting caloric intake using this device to prevent or minimize contact with the absorptive tissues of the digestive tract.

Abstract: A medical connector for providing a sterile connection between a multi-use portion and a single-use portion of a fluid delivery system is provided. The medical connector includes a fluid inlet port configured for removable engagement with a connection port of a multi-use disposable set (MUDS) to establish a fluid connection therewith and a waste outlet port configured for removable engagement with a waste inlet port of the MUDS to establish a fluid connection therewith. A patient fluid line is connected, at a first end, to the fluid inlet port and connected, at a second end, to the waste outlet port. Fluid flow through the patient fluid line is unidirectional from the first end to the second end. The patient fluid line is configured for being disconnected from the waste outlet port for delivering fluid to a patient. A multi-fluid delivery system having the medical connector and MUDS is also provided.

Abstract: A reduced absorption device may include a proximal anchor and a distal sleeve including a frame and a membrane. The membrane may include a plurality of porous regions, and each porous region may be configured to align with a corresponding region of an intestine configured to absorb nutrients.

Abstract: The purpose of the present invention is to provide a valve mechanism which features a simple structure adapted to collectively control the supply of gas or culture medium to a plurality of cultivation containers for simultaneous cultivation and to enhance the reliability of the valve mechanism. The valve mechanism of the invention is a valve mechanism for opening and closing passages for liquid or gas. The valve mechanism includes: clip members adapted to close a plurality of tube passages, respectively; a multiple cam member for opening the clip members in sequence by making contact with the clip members; and a rotational mechanism for rotating the multiple cam member. The clip member includes: a spring for closing a clip thereof; and a clip contact portion for a cam contact portion of the multiple cam member to make contact therewith.

Abstract: Method and apparatus for treatment of morbid obesity by placement of a series of flow reduction elements in the small intestine to induce satiety are disclosed. The flow reduction elements restrict the movement of partially digested food and reduce the flow rate through the small intestine which causes the emptying of the stomach and the duodenum to occur slower. The flow reduction elements are attached to an elongated tube and are constructed from various shapes and configurations. The flow reduction elements may be inflated with fluid or may be constructed from self-expandable materials. The device is anchored in the antrum of the stomach with an anchoring member. The transoral gastric device can be inserted with a delivery catheter through the working lumen of an endoscope or alongside an endoscope and may be removed with the aid of an endoscope if desired.

Abstract: An endoluminal sleeve device for internally lining a section of the GI tract, comprises a sleeve configured for deployment inside a duodenum, the sleeve having walls of a flexible material defining a sleeve lumen, a proximal end defining a proximal lumen opening, and a distal end defining a distal lumen opening, an anchoring component having a slender transport configuration and a bulky deployed configuration, wherein the anchoring component is locatable at a distance from the proximal sleeve end and connected thereto by an elongated tether.

Abstract: An apparatus to dispense fluids may include a reusable portion and a disposable portion. The disposable portion may include components that come into contact with the fluid, while the reusable portion may include only components that do not come into contact with the fluid. The apparatus includes an acoustic volume sensor that acoustically excites a fixed-volume chamber and a measurement chamber with a loudspeaker and measures the acoustic response with microphones acoustically coupled to the fixed volume chamber and the measurement chamber. The loudspeaker and sensing microphones are connected to the measurement chamber by separate ports. A detachable dispensing chamber is coupled to the acoustic volume sensor. The volume of the fluid dispensed is determined by a processor based on the acoustic response of the microphones to acoustic excitement by the loudspeaker.

Abstract: Pump includes a motor and a cam shaft coupled to the motor for rotation about a longitudinal axis of the cam shaft. The cam shaft has at least one radially-outward projection defining a helical engagement portion disposed along a length of the cam shaft. A plurality of finger plates are disposed along the length of the cam shaft, each finger plate mounted for movement in a transverse direction relative to the longitudinal axis of the cam shaft. Each finger plate has an aperture defined therein to receive the cam shaft therethrough. Each aperture has a substantially straight edge region and an opposing edge region. Engagement of the helical engagement portion with the substantially flat edge region during rotation of the cam shaft urges the finger plate transversely toward an extended position.

Abstract: The present invention relates to systems and methods for in situ inspection, interrogation, and maintenance of heart pump function in subjects with an implanted heart pump. In certain embodiments, the system comprises a catheter assembly deliverable to the inflow port and outflow port of the implanted heart pump. The system comprises additional components used to examine pump function and prevent malfunction. In certain embodiments, the invention allows for temporary, mid-term, or permanent exclusion of the implanted heart pump from cardiac function without surgically removing the pump.

Abstract: A device for extracorporeal blood treatment, in particular a dialysis machine, including a peristaltic pump for conveying fluid from a low-pressure side to a high-pressure side, the peristaltic pump comprising a rotor which is rotatable around a rotor axis and a support area which is formed around the rotor axis in an arcuate manner, with an elastically deformable fluid line being able to be positioned between the rotor and the support area and being deformed between the rotor and the support area with rotation of the rotor while forming a cross-sectional constriction, so that upon rotation of the rotor with respect to the support area a fluid in the fluid line is conveyed from the low-pressure side to the high-pressure side. The device includes a machine housing part realized as a formed sheet metal part, wherein the support area is formed in the machine housing part by plastic deformation.

Abstract: A system for performing fluid administration on a patient, the system including a flexible membrane forming a valve of a port having a valve seat, and an actuator having an actuator head, wherein the flexible membrane includes a membrane actuator clip configured to removably connect to the actuator head, the connection between the membrane actuator clip and the actuator head allowing the actuator to push the flexible membrane towards the valve seat to close the valve, and to pull the flexible membrane away from the valve seat to open the valve.

Abstract: The present invention includes a finger-type peristaltic pump with a ribbed anvil. According to some embodiments, a finger type peristaltic pump may comprise a plurality of pressing fingers, an infusion tube and a passive interfacing mechanism. The passive interfacing mechanism may comprise a channel, groove or other suitable mount for placing and mounting an infusion tube such that the pressing fingers are positioned on one side of the tube and the ribbed anvil on the opposite side. The pressing fingers may be positioned to apply an approximately perpendicular force on the tube, pressing it against the ribbed anvil, thus causing a pumping action.