Abstract: An acoustic line tracing system for tracing a fluid transfer system tubing line includes an acoustic receiver operably connectable to the tubing line and configured to receive the vibratory signal. The acoustic receiver includes a vibration sensor disposed to contact the tubing line and configured for detecting vibration of the surface of the tubing line caused by the vibratory signal, and an indicator producing at least one of an audio and a visual cue when the vibration sensor detects the vibratory signal.

Abstract: A system for generating a mechanical wave is disclosed. The system comprises a camshaft having plurality of rotatable cams, serially mounted on a shaft along an axis of an elastic tubular shell to form a varying phase angle along the shaft. The system further comprises a plurality of cam followers arranged circumferentially about each cam, such that a rotary motion of the cams generates a linear motion of the cam followers to radially bias in internal wall the shell. The variation of the phase angle is selected to generate a three-dimensional traveling wave along the shell.

Abstract: Fluid supply systems and methods for therapeutic fluid delivery systems, including those used for negative pressure wound therapy (NPWT) systems and methods.

Abstract: A device for inducing weight loss in a patient includes a tubular prosthesis self-expandable from a collapsed position in which the prosthesis has a first diameter to an expanded position in which the prosthesis has a second, larger, diameter. In a method for inducing weight loss, the prosthesis is placed in the collapsed position and inserted into a stomach of a patient. The prosthesis is allowed to self-expand from the collapsed position to the expanded position and into contact with the walls of the stomach, where it induces feelings of satiety and/or inhibits modulation of satiety-controlling factors such as Ghrelin.

Abstract: A pump system including a pump, an inflow cassette and an outflow cassette. The inflow cassette has a damping flexible membrane covering a damping region configured to dampen pressure pulsations in washing fluid passing through the damping region. The pump has a plurality of individually actionable pressing members that can each be individually actuated to pinch one of a plurality of suction tubes of the outflow cassette to at least partially prevent fluid flow through the one of the plurality of the suction tubes.

Abstract: A medical pump includes first and second compartments, which are configured to accept respective first and second containers of fluid to be pumped to a medical device, and a paddle, which is fitted between the first and second compartments. The pump additionally includes a control module, which is configured to drive the paddle to alternate between first time periods in which the paddle applies pressure to the first container so as to pump the fluid therefrom, and second time periods in which the paddle applies the pressure to the second container so as to pump the fluid therefrom.

Abstract: A door assembly includes a door frame, which generally defines a door opening. An assist handle is movably attached to the door frame. The assist handle is movable between a retracted position, proximal to the door frame, and a deployed position, distal from the door frame.

Abstract: A peristaltic pump, and related system method are provided. The peristaltic pump includes a cam shaft, first and second pinch-valve cams, first and second pinch-valve cam followers, a plunger cam, a plunger-cam follower, a tube receiver, and a spring-biased plunger. The first and second pinch-valve cams are coupled to the cam shaft. The first and second pinch-valve cam followers each engage the first and second pinch-valve cams, respectively. The plunger cam is coupled to the cam shaft. The plunger-cam follower engages the plunger cam. The tube receiver is configured to receive a tube. The spring-biased plunger is coupled to the plunger-cam follower such that the expansion of the plunger cam along a radial angle intersecting the plunger-cam follower as the cam shaft rotates pushes the plunger cam follower towards the plunger and thereby disengages the spring-biased plunger from the tube. A spring coupled to the spring-biased plunger biases the spring-biased plunger to apply the crushing force to the tube.

Abstract: A medical device includes an interface unit body, which is configured to hold a portion of a flexible infusion tube. A hinge insert is fixed to the interface unit body and is configured to engage a hinge receptacle, which defines a hinge axis, on an infusion pump. A catch insert is fixed to the interface unit body and is configured to lock onto a catch receptacle on the infusion pump upon rotation of the mechanical interface unit about the hinge axis while the hinge insert engages the hinge receptacle, so as to bring the tube into engagement with a peristaltic mechanism of the infusion pump in order to enable the peristaltic mechanism to propel a fluid through the tube.

Abstract: A normally closed valve includes a plurality of fluid channels in fluid communication with each other, defined in a flexible base such that when a fluid channel is compressed, a fluid flow through the fluid channel is occluded, otherwise, the fluid flow through the fluid channel is unoccluded; and means for selectively compressing or uncompressing a desired fluid channel.

Abstract: Provided is an apparatus for generating extreme ultraviolet light. The apparatus includes a collector mirror unit, a gas supply unit configured to supply a processing gas to the collector mirror unit, a gas supply nozzle arranged in at least one area of the collector mirror unit and configured to supply the processing gas to a surface of the collector mirror unit, and a controller configured to adjust a shape of a spray hole of the gas supply nozzle. The shape of the spray hole may be changed according to a control operation of the controller.

Abstract: A housing for a fluid infusion device is provided. The housing can include a first housing component including a first engagement system. The first housing component can define a first compartment and a second compartment. The first engagement system can be coupled to the second compartment and movable relative to the second compartment. The housing can also include a second housing component coupled to the first compartment of the first housing component. The second housing component can include a second engagement system. The second engagement system can be movable relative to the second housing component.

Abstract: An infusion pump has a primary finger with an inclined surface, which is obliquely inclined to an advancing and retracting direction, and a secondary finger with an inclined surface, which is slidable relative to the inclined surface of the primary finger. When the primary finger is advanced, the secondary finger is retracted in proportion to the variation (increasing) in an entire width of an infusion tube, and when the primary finger is retracted, the secondary finger is advanced in proportion the variation (decreasing) in the entire width of the infusion tube. This configuration can suppress the occurrence of any gap between a tip surface of the secondary finger and an outer peripheral surface of the infusion tube in the advancing and retracting process of the primary finger. Consequently, this prevents the infusion tube from meandering, and suppresses the reduction in the accuracy of the rate of infusion.

Abstract: Devices and methods for delivering therapeutic fluid to a patient's body are described. The devices may comprise a dispensing unit having a reservoir, a driving mechanism having a movable member for delivering therapeutic fluid to a patient's body, at least one sensor for sensing a relative position of the movable member and generating a signal, and a processor for controlling the driving mechanism to deliver an amount of therapeutic fluid that compensates for a change in the flow of the therapeutic fluid occurring during fluid delivery. The methods may be implemented by operating the driving mechanism, receiving a signal based on the position of the movable member, determining an amount of therapeutic fluid to deliver, and controlling the driving mechanism to deliver an amount of fluid that compensates for a change in flow occurring during fluid delivery.

Abstract: The invention provides a finger-type peristaltic pump (2) having a body (4) and a housing (6). The body contains two or more finger-type valves (16) and a processor (22) configured to operate the valves according to a predetermined temporo-spatial pattern. The housing has a passageway (18) configured to receive a conduit. The housing has a first position in which a conduit in the passageway is positioned adjacent to the valve fingers, and a second position in which a conduit in the passageway is not adjacent to the valve fingers. The invention also provides a housing for use in the pump of the invention.

Abstract: A fluid transporting device includes an elastic tube, a tube frame that holds the elastic tube in an arc, a rotary push plate arranged in the arc for facilitating fluid flow inside the elastic tube, and a plurality of push pins disposed between the elastic tube and the center of the arc. Each push pin includes a semispherical end portion that contacts the rotary push plate, a pushing end portion that places a bias on the elastic tube, and adjacent end portions of at least two push pins close the elastic tube when the semispherical end portions are pushed by an outer circumference arc of the rotary push plate.

Abstract: A tubing pump capable of improving flow rate accuracy which is required, particularly, in infusion pumps for medical use is developed. In a tubing pump that delivers a liquid in a tube which is separately loaded, a pump mechanism includes a valve mechanism unit that occludes and releases occlusion to the loaded tube and a tube pressing mechanism unit that repeatedly presses the tube, and the tube squeezing mechanism unit includes a pump block which has its movement guided by at least two guide shafts.

Abstract: Disclosed are systems and methods for power injectors incorporating a keep vein open functionality that is operable when an injection protocol (112) is suspended. The injector includes control logic (110) configured to include the injection protocol (112), and a separate drip mode injection protocol (114) executable only during a suspension of the injection protocol (112). In one embodiment, the drip mode injection protocol (114) is automatically or manually initiated immediately after and in response to the suspension of the injection protocol (112). In another embodiment, the drip mode injection protocol (114) is automatically initiated after a predetermined delay from start of the suspension of the injection protocol (112). The configuration parameters for the drip mode injection protocol (114) may be programmable prior to the initiation of an injection procedure, immediately prior to the execution of the drip mode injection protocol (114), or hard-coded into the injector.

Abstract: A pumping mechanism is disclosed that includes a plurality of peristaltic pumping actuators configured to selectively and sequentially compress adjacent portions of a first portion of an at least partially compressible pumping element having an inlet that is upstream of an outlet. The plurality of pumping actuators are further configured to reciprocate at a common drive frequency with a first phase offset between each adjacent pair of pumping actuators. The pumping mechanism also includes at least one compensation actuator arranged to selectively compress a second portion of the at least partially compressible pumping element that is disposed between the first portion and the outlet. The at least one compensation actuator is configured to reciprocate at an optimal displacement and at a modulation frequency that is an integer multiple of the fundamental drive frequency and with a second phase offset between the at least one compensation actuator and the adjacent pumping actuator.

Abstract: A pump module, a pump base module and a pump system in which the pump module has a base and a flexibly deformable membrane, with the base and the membrane forming a line-shaped pump channel that is curved at least in sections, and the base having a pump channel inlet and a pump channel outlet, wherein the pump channel inlet and the pump channel outlet are connected with the pump channel for supplying and discharging a fluid in the pump channel in such a way, so that through a periodically rotating deformation of the membrane a fluid can be pumped through the pump channel from the pump channel inlet to the pump outlet.

Abstract: This invention relates to a valve for metering filled and/or pasty media. In accordance with an embodiment, the valve comprises a valve element having a metering opening and a valve gate movable in translation and having a flow opening. The valve gate is configured for carrying out an oscillating double-stroke movement in the course of which the flow opening of the valve gate is temporarily aligned with the metering opening of the valve element. The flow opening of the valve gate is aligned with the metering opening of the valve element in the course of the double-stroke movement of the valve gate a first time during the forward stroke and a second time during the backward stroke.

Abstract: A fluid conveying device includes: a tube; a cam having protrusions; fingers arranged along the tube between the tube and the cam; a driving rotor which rotates the cam to sequentially push the fingers by the protrusions in a flowing direction of a fluid, repeatedly pressuring and opening of the tube, driving the cam; a detection unit which detects a rotating position of the cam; a control unit which calculates a cam rotation angle along a cumulative ejection volume, using a first approximation formula for an ejection area H where the cumulative ejection volume increases substantially in proportion to the rotation angle of the cam and a second approximation formula for a constant area J where the cumulative ejection volume little increases or decreases even if the cam rotates, driving the driving rotor until a rotating position of the cam corresponding to a designated cumulative ejection volume is reached.

Abstract: A fluid conveying device includes: a tube; a cam having protrusions; fingers arranged along the tube between the tube and the cam; a driving rotor which rotates the cam to sequentially push the fingers by the protrusions in a flowing direction of a fluid, repeatedly pressuring and opening of the tube, driving the cam; a detection unit which detects a rotating position of the cam; a control unit which calculates a cam rotation angle along a cumulative ejection volume, using a first approximation formula for an ejection area H where the cumulative ejection volume increases substantially in proportion to the rotation angle of the cam and a second approximation formula for a constant area J where the cumulative ejection volume little increases or decreases even if the cam rotates, driving the driving rotor until a rotating position of the cam corresponding to a designated cumulative ejection volume is reached.

Abstract: The present disclosure provides a linear peristaltic pump that is capable of dispensing varied amounts of liquid from a tube. The linear peristaltic pump includes an adjustably attached squashing plate that is configured to move lengthwise in the housing of the pump. The amount of liquid dispensed from a tube disposed in the pump varies based on the location of the squash plate in the housing.

Abstract: Embodiments of the present invention relate generally to certain types of reciprocating positive-displacement pumps (which may be referred to hereinafter as “pods,” “pump pods,” or “pod pumps”) used to pump fluids, such as a biological fluid (e.g., blood or peritoneal fluid), a therapeutic fluid (e.g., a medication solution), or a surfactant fluid. The pumps may be configured specifically to impart low shear forces and low turbulence on the fluid as the fluid is pumped from an inlet to an outlet. Such pumps may be particularly useful in pumping fluids that may be damaged by such shear forces (e.g., blood, and particularly heated blood, which is prone to hemolysis) or turbulence (e.g., surfectants or other fluids that may foam or otherwise be damaged or become unstable in the presence of turbulence).

Abstract: A microfluidic pump is provided for managing fluid flow in disposable assay devices, which provides constant flows even at very low flow rates. Devices utilizing the microfluidic pump, as well as methods for manufacture and performing a microfluidic process are also provided.

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 fluid transporter which transports fluid by pressing a plurality of radially disposed pressing shafts against a tube held in a circular-arc shape in directions from the inside of the circular-arc shape in accordance with rotation of a rotational pressing plate having a plurality of projections on the outer circumference thereof so as to allow flow of fluid includes: a first detecting section which detects the rotation angle of the rotational pressing plate; a second detecting section which detects the rotation angle of either a driving rotor for giving a rotational force to the rotational pressing plate or a reduction transmission mechanism for connecting the driving rotor and the rotational pressing plate; a data table which shows the relationship between the rotation angle of the rotational pressing plate and a cumulative delivery amount; and a controller which controls the drive of the driving rotor.

Abstract: The invention relates to a tube pump including an at least partly flexible tube and a pump element inserted in the tube, where the pump element comprises no more than one non-return valve member and a flow blocking member positioned a distance apart on a rod element. The non-return valve member is oriented on the rod element so as to allow for a fluid flow in the tube through the valve member along the rod element in the direction towards the flow blocking member. The flow blocking member is in a closed configuration placed to block the tube by engaging with the tube walls, and is in an open configuration configured to deform by a deformation of the tube such as to allow for fluid passage. The flow blocking member further is configured to attain its closed configuration when not opened by the tube deformation.

Abstract: There is provided a micro pump device including a micro pump, and a housing receiving the micro pump and provided with a pipe connection port.

Abstract: The invention provides a finger-type peristaltic pump (2) having a body (4) and a housing (6). The body contains two or more finger-type valves (16) and a processor (22) configured to operate the valves according to a predetermined temporo-spatial pattern. The housing has a passageway (18) configured to receive a conduit. The housing has a first position in which a conduit in the passageway is positioned adjacent to the valve fingers, and a second position in which a conduit in the passageway is not adjacent to the valve fingers. The invention also provides a housing for use in the pump of the invention.

Abstract: The invention relates to a prosthesis with a prosthesis socket which has an inner face and is designed to be arranged on an amputation stump after a liner has been pulled over the latter, such that the inner face is directed toward the liner and a volume is enclosed between the inner face and the liner, and with a pump for generating an underpressure in the volume when the prosthesis socket is arranged on the amputation stump, characterized in that the pump is a peristaltic pump (1).

Abstract: A pump system for producing fluids from a reservoir using a wellbore having a vertical section with a casing defining an annulus, a transitional section and a horizontal section, and a production tubing having a vertical section and a horizontal section, wherein the system includes a completion with an isolation device in the annulus near the bottom of the vertical section, a gas/liquid separator for receiving produced fluids from the horizontal section, and a vertical lift pump; a continuous flow path from the terminus of the production tubing to the vertical section; a plurality of horizontal pumps in the horizontal section, each having an intake exposed to the reservoir and an outlet in the continuous flow path. The horizontal length of the production tubing is closed to the reservoir except through the horizontal pumps.

Abstract: Hemodialysis dialysis systems are disclosed. Hemodialysis systems of the invention may include a dialysate flow path including a balancing circuit, a mixing circuit, and/or a directing circuit. The circuits may be defined within one or more cassettes. The fluid circuits may be at least partially isolated, spatially and/or thermally, from electrical components of the system. A gas supply may be provided in fluid communication with the dialysate flow path and/or the dialyzer to, urge dialysate through the dialyzer and blood back to the patient. The hemodialysis systems may include fluid handling devices actuated using a control fluid, optionally delivered using detachable pump. Fluid handling devices may be generally rigid and of a spheroid shape, optionally with a diaphragm dividing the device into compartments.

Abstract: 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.

Abstract: A pumping mechanism includes a housing containing the pumping mechanism, the housing defining a seat configured to receive a pump cassette having a fluid lumen that can be acted upon by the pumping mechanism so as to pump fluid through the fluid lumen of the pump cassette. A platen pad is movably attached to the housing mechanism, wherein the platen pad can movably adjust in position relative to the pump cassette as the pump cassette is secured in the seat of the housing.

Abstract: A vacuum pump for generating an underpressure has a pump chamber (14, 15) with an inlet (143) and an outlet (150), wherein the outlet (150) is equipped with a valve (3). According to the invention, the pump chamber (14, 15) is provided with a pressure sensor (23, 23?, 24). This vacuum pump has a relatively precise and inexpensive vacuum sensor. It is also advantageous that the sensor, being integrated in the pump chamber, is not susceptible to failure and takes up a small amount of space.

Abstract: 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.

Abstract: A medical pump includes a chassis having a fixed seat and a carriage having a footing for receiving a fluid delivery device and restricting its movement. An actuator assembly is provided that allows for moving the carriage between an opened and closed position to engage the fluid delivery device to the seat. A rack and pinion system is utilized in combination with a cam element and spring element to provide a bi-stable actuator assembly that urges the carriage into a fully opened position or a fully closed position and will not allow the carriage to dwell in an intermediate position if external force is withdrawn.

Abstract: This invention concerns a method and apparatus for dispensing minute quantities of highly viscous material from a jetting needle when an expelling mechanism is activated using a nozzle plate with a jetting chamber having a top formed by a diaphragm and a bottom in fluid communication with a jetting needle. Fluid enters the chamber from an inlet channel and is jetted from the chamber by deforming the diaphragm to block the channel and expel a drop of fluid from the needle. A diaphragm driven metering chamber and/or reservoir chamber can optionally be used provide fluid to the jetting chamber.

Abstract: A “load and go” peristaltic pump tubing arrangement without a special configuration, such as the “Double-Y” tubing connectors used by the Watson Marlow 505L pump head. One of the critical components in the peristaltic pump system is the pump tubing which now can be monitored so that the health of the peristaltic pump is known. The result is a “smart” peristaltic pump using a notch or other part in a second spring-clamp or tubing holder. Located on two ? 316 inch shoulder screws are two roller clutches and two spacers to complete the assembly of the pump. The distance between the two rollers allows the tubing to elongate but not move backward toward the peristaltic rollers.

Abstract: A rotary cam actuated linear peristaltic pump includes a plurality of cams which actuate a plurality of pistons. The cams apply a force to the piston by way of a lifter for providing mechanical advantage so that a smaller motor may be used to rotate the cam. Each piston of a plurality of pistons is sequentially raised to the extended position to squeeze a tube so as to flow fluid through the tube.

Abstract: A pump system containing no external parts or valves is provided. The pump system is characterized by a common type of actuating mechanism and incorporates reversibly expanding actuators, preferably electroactive actuators. Fluid is caused to move at a selected flow rate and direction by sequentially activating contiguous actuators located inside the pump. The pump may be used to pump a variety of fluids and may be used in various industrial, commercial, medical, aeronautical, or military applications.

Abstract: The present invention in one embodiment is a power tool including a housing, a main power shaft located within the housing, a peristaltic pump assembly positioned within the housing and operably connected to the main power shaft, and an outlet conduit operably connected to the peristaltic pump assembly and extending between the peristaltic pump assembly and an outlet port in the housing such that fluid is forced by the peristaltic pump assembly through the outlet conduit to a location outside of the housing.

Abstract: 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 flow paths associated with the ends of the tube guided out of the pump bed cross.

Abstract: A pump comprising a pump housing member having a chamber with inner walls and an open end having a first area, the pump housing member comprises an enlarged surface surrounding the open end of the chamber. The pump further comprises a second pump housing member and a membrane element with a second area. The membrane element has a first central section having a third area with same size as the first area of the open end of the chamber. The membrane element is arranged on the pump housing element with the first central section positioned over the open end, forming a sealed chamber. A portion of the membrane element is slidably clamped between the enlarged surface and the second pump housing member.

Abstract: A pump comprising a membrane element and a pump housing having a chamber with a bevelled inner wall. The chamber comprises an open end having a third area. The membrane element has a first area, and comprises a central section with a second area which is surrounded by a periphery section. The central section is thicker than the periphery section. Further, the second area of the central section is smaller than the third area of the open end of the chamber and the membrane element is arrangable over said pump housing forming a sealed chamber, whereby the central section of the membrane element is arranged over the open end, and the central section is protruding away from the chamber.

Abstract: A pump according to the present invention is provided with a communication portion that provides continuous communication between a pump section and a discharge section in a state where a discharge-side check valve suppresses a backflow, and a size of the communication portion is set so that, when the continuously expanding and contracting pump section contracts, a volume of gas mixed in liquid in the pump section is contracted.

Abstract: A diaphragm pump is provided for the pressurized delivery of dusts in a dust feeding device. The diaphragm pump includes a storage hopper which is subjected to inert gas at ambient pressure and which serves for the storage of the dust. A sluicing vessel is provided which is connected via an inlet in the upper region, via a shut-off fitting and via a dust supply line to the dust store of the storage hopper, and is connected via an outlet in the lower region and via a shut-off fitting to a high-pressure device. A diaphragm is mounted in the sluicing vessel. An expansion line is provided, one end of which is connected via a filter element to the sluicing vessel and into which a shut-off fitting is incorporated. The diaphragm pump includes charging line which is connected via a filter element and via a shut-off fitting to the sluicing vessel.

Abstract: A fluid transporting device includes an elastic tube, a tube frame that holds the elastic tube in an arc, a rotary push plate arranged in the arc for facilitating fluid flow inside the elastic tube, and a plurality of push pins disposed between the elastic tube and the center of the arc. Each push pin includes a semispherical end portion that contacts the rotary push plate, a pushing end portion that places a bias on the elastic tube, and adjacent end portions of at least two push pins close the elastic tube when the semispherical end portions are pushed by an outer circumference arc of the rotary push plate.