EP3559463A1 - Displacement pump for medical liquids, blood treatment device, and method for controlling same - Google Patents
Displacement pump for medical liquids, blood treatment device, and method for controlling sameInfo
- Publication number
- EP3559463A1 EP3559463A1 EP17816835.7A EP17816835A EP3559463A1 EP 3559463 A1 EP3559463 A1 EP 3559463A1 EP 17816835 A EP17816835 A EP 17816835A EP 3559463 A1 EP3559463 A1 EP 3559463A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- pump
- flow rate
- control unit
- positive displacement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 77
- 239000007788 liquid Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000008280 blood Substances 0.000 title abstract description 8
- 210000004369 blood Anatomy 0.000 title abstract description 8
- 239000012530 fluid Substances 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims description 8
- 208000031872 Body Remains Diseases 0.000 claims description 4
- 238000007639 printing Methods 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 4
- 238000005086 pumping Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 11
- 230000001276 controlling effect Effects 0.000 description 7
- 238000000502 dialysis Methods 0.000 description 6
- 239000003146 anticoagulant agent Substances 0.000 description 4
- 229940127219 anticoagulant drug Drugs 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
- F04B9/123—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber
- F04B9/125—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting elastic-fluid motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/20—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the driving speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
- F04B43/0081—Special features systems, control, safety measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/06—Pumps having fluid drive
- F04B43/067—Pumps having fluid drive the fluid being actuated directly by a piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/08—Regulating by delivery pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2201/00—Pump parameters
- F04B2201/06—Valve parameters
- F04B2201/0606—Opening width or height
- F04B2201/06062—Opening width or height of the outlet valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2205/00—Fluid parameters
- F04B2205/03—Pressure in the compression chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2205/00—Fluid parameters
- F04B2205/05—Pressure after the pump outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2205/00—Fluid parameters
- F04B2205/09—Flow through the pump
Definitions
- the invention relates to a positive displacement pump for conveying medical
- Liquids which has a pump chamber and a displacement body, and a blood treatment device with a positive displacement pump. Moreover, the invention relates to a method for controlling a positive displacement pump for delivering medical fluids.
- the known positive displacement pumps have a pump chamber and a pump chamber
- Displacement The promotion of the liquid is due to the caused by the movement of the displacer in the pump chamber volume change.
- the displacement body is a guided in a wooden cylinder piston, which is actuated by a drive unit.
- Diaphragm pumps use.
- the advantage of diaphragm pumps lies in the separation of the drive unit from the liquid to be pumped through a membrane.
- Diaphragm pumps should have a high delivery accuracy. Diaphragm pumps with a high delivery accuracy are used, for example, in dialysis.
- dialysis machines diaphragm pumps are used which are connected via a device-side
- the cassette has a
- the device-side assembly comprises an actuator body, with which the membrane is deformed, so that a volume change takes place in the pump chamber, whereby the medical
- Liquid is conveyed.
- the outlet of the pump chamber is closed by an outlet valve
- the inlet of the pump chamber is closed in the pressure phase by an inlet valve.
- the disposable-side module of the diaphragm pump can be coupled to the device-side module, so that the actuator body can deform the membrane.
- Piston diaphragm pumps are known from the state of the art for generating high pressures in working machines in which the diaphragm is operatively connected via a working space which is filled with hydraulic oil as the working fluid. This should relieve the burden on the diaphragm and increase its service life.
- the invention has for its object to provide a positive displacement pump for use in medical technology for conveying medical fluids, which allows a separation of a device-side and a disposable facultyen assembly.
- the invention has the object, a positive displacement pump in a two-part design for pumping medical fluids with a high
- the positive-displacement pump according to the invention for medical fluids has a pump chamber, a displacement body, one with the displacement body in
- Actively connected actuator body for moving or deforming the displacer for conveying the liquid into the pump chamber or from the pump chamber and a drive device for the method of the actuating body.
- a control unit For controlling the drive device and the inlet valve and exhaust valve, a control unit is provided.
- the control unit is designed such that in the suction phase the inlet valve is opened and the outlet valve is closed and in the pressure phase the Inlet valve closed and the outlet valve is open.
- the displacement body can basically be designed differently.
- the displacement pump is a diaphragm pump which has a deformable membrane as a displacement body, which closes a pump chamber.
- the displacer can also be a piston in a hollow cylinder.
- the actuating body is not fixedly connected to the displacement body, but the actuating body is connected to the
- the positive displacement pump allows a two-part design with a device-side and a disposable-side assembly intended for single use.
- Displacer is actuated.
- the displaced by the actuator body gas volume corresponds to the volume of liquid from the displacement of the
- the positive displacement pump provides a device-side actuator and a disposable-side pump device, wherein the drive device, the actuator body and the working chamber part of the device side
- Actuating device and the displacement body and the pump chamber are part of the disposable side pump device. But it is also possible that a device-side actuator and a disposable nie pump device are not provided.
- the device-side actuating device and the disposable-side pump device are preferably designed such that the disposable-side pump device can be coupled to the device-side actuating device.
- the pump means is coupled to the actuator, a volume of gas trapped in the working chamber becomes
- the working chamber can be designed differently.
- the working chamber can be designed differently.
- Working chamber a cylinder body (hollow cylinder), in which a piston as
- Actuator is guided. During a movement of the piston in the hollow cylinder, the volume of gas trapped in the hollow cylinder is displaced so that the displacer is actuated via the gas volume.
- the drive device preferably has an electric motor for driving the actuating body, which is controlled by the control unit.
- the positive displacement pump provides for the coupling of actuator body and displacer over a trapped in a working chamber gas volume, in particular air volume, a special design of the control unit.
- control unit has a
- Pressure measuring device for measuring the pressure in the working chamber, for example, an electronic pressure sensor.
- the control unit is designed such that in the pressure phase the outlet valve is controlled in dependence on the pressure measured with the pressure measuring device in such a way that the pressure p in the working chamber remains constant during the movement of the actuating body. It is assumed that the temperature T does not change, which can be assumed in practice.
- control unit is preferably designed such that the
- the Drive device is controlled such that the flow rate of a predetermined target flow rate or the delivery rate corresponds to a predetermined target delivery rate.
- the pressure phase that is, when the displacer displaces the liquid from the pump chamber, the actual pressure in the working chamber is constant, so that the funded volume of liquid results from the travel of the actuating body.
- the control unit specifies a certain distance to which the operating body is moved, while the control unit for setting a specific target prinarte for the movement of the displacement body specifies a certain speed.
- This embodiment has the advantage that the desired flow can be set via the travel path of the actuating body, wherein for adjusting the constant pressure in the working chamber not the actuating body, but the exhaust valve is controlled by the control unit accordingly.
- a particularly preferred embodiment provides a displacement sensor for measuring the travel of the actuating body, wherein the control unit is designed such that on the basis of the measured travel of the actuating body calculates the actual flow or Ist-Förderarte and the drive means is controlled such that the actual Delivery rate of the target delivery rate or actual delivery rate of the target delivery rate corresponds.
- control unit is designed such that in the printing phase, not the exhaust valve, but the drive device is controlled in dependence on the pressure measured by the pressure measuring device such that the pressure in the working chamber during the process of the actuating body remains constant.
- control unit is preferably designed such that the
- Outlet valve is controlled such that the actual flow rate of the desired flow rate or actual delivery corresponds to the target delivery rate.
- the pressure is kept constant by controlling the movement of the actuator body. The movement of the actuator determines the actual flow.
- the setting of the desired flow takes place in this embodiment in that the exhaust valve is controlled accordingly by the control unit.
- the displacement pump according to the invention finds particular as a diaphragm pump in medical devices for conveying a medical treatment liquid Use, for example in a blood treatment device (dialysis device) for the exact dosage of an anticoagulant solution.
- the inventive method for controlling a positive displacement pump for medical fluids the device via a pump chamber, a displacement body, an operatively connected to the displacer body actuating body for moving or deforming the displacer, a drive to the process of
- the outlet valve is controlled in response to the pressure in the working space such that the pressure in the working space during the process of the operating body remains constant, and the operating body is moved such that the flow rate of a predetermined target flow or theRONarte a predetermined target prinarte corresponds.
- the actuating body is in
- the outlet valve is controlled so that the flow rate of a predetermined target flow rate or theRONarte corresponds to a predetermined target bainarte.
- FIG. 1 shows an embodiment of the positive displacement pump according to the invention in a simplified schematic representation
- FIG. 2 is a schematic diagram illustrating a first embodiment for the control of the exhaust valve and the actuating body of the positive displacement pump and
- Fig. 3 is a schematic diagram illustrating a second embodiment for the control of the exhaust valve and the actuating body of the positive displacement pump.
- Fig. 1 shows a highly simplified schematic representation of a medical
- Treatment device in particular a dialysis machine, which has the positive displacement pump 1 according to the invention.
- the dialysis machine has an extracorporeal
- Blood circulation 2 which is shown only schematically.
- a medical liquid for performing the treatment is conveyed, which is provided in a container 3.
- the extracorporeal blood circuit 2 with the positive displacement pump 1 is a
- the displacement pump 1 has a pump device 4 with a pump chamber 5, which is part of a disposable cassette 6 (disposable), which is inserted into a receiving unit 7 of the dialysis machine.
- a pump device 4 with a pump chamber 5, which is part of a disposable cassette 6 (disposable), which is inserted into a receiving unit 7 of the dialysis machine.
- Pump chamber 5 has an inlet 8, to which an inlet line 9 is connected, and an outlet 10, to which an outlet line 11 is connected.
- Inlet line 9 is connected to the container 3 for the treatment liquid, in particular anticoagulant solution, and the outlet line 11 is connected to the extracorporeal blood circuit 2.
- the inflow of liquid, in particular the anticoagulant solution, into the pump chamber 5 is regulated by an inlet valve 12 and the outflow of liquid from the pump chamber 5 by an outlet valve 13.
- the inlet valve 12 and the outlet valve 13, which may be designed as electromagnetic or pneumatic valves, are controlled by a control unit 14, which may be part of the central control unit of the treatment device.
- the pump chamber 5, which may have a cylindrical pumping space, is sealed by a flexible membrane 15, which is applied to the top of the cassette 6.
- the positive displacement pump 1 has a device-side actuating device 16, to which the disopsable-side pump device 4 can be coupled in a sealing manner.
- the sealing takes place via opposing contact surfaces 17, 18 of the pump device 4 and the actuating device 16.
- the actuating device 16 has a working chamber 19 which may have a cylindrical working space which can be sealingly coupled to the pumping chamber 5 of the actuating device 4.
- an actuating body 20 is guided longitudinally displaceable, which may be a piston. The drive of the
- Actuator 20 is provided with a drive device 21, which may have an electric motor 22 which actuates the piston via a coupling mechanism, not shown.
- Stroke movement of the piston to a deformation of the displacement body (diaphragm) 15 leads, whereby liquid is displaced from the pump chamber 5.
- the volume of air displaced by the piston corresponds to the volume of fluid displaced from the pump chamber.
- Microprocessor an application-specific integrated circuit (ASIC), an integrated circuit (FPGA) consisting of logic elements or other integrated circuits (IC) or hardware components to the individual
- the control unit 21 controls the intake and exhaust valves 12, 13 such that in the suction phase the intake valve 12 is opened and the exhaust valve 13 is closed and in the pressure phase the intake valve 12 is closed and the exhaust valve 13 is opened.
- Fig. 1 all components are shown only schematically.
- the inlet and outlet valves can also have disposal-side and device-side components.
- control unit 14 provides the following control (regulation) for the drive device 21 of the actuator body 20 and for the inlet valve 12 and exhaust valve 13cvorvor.
- p the pressure
- V the volume
- n the molar mass
- R m the molar gas constant
- T the temperature
- FIGS. 2 and 3 illustrate the regulation of pressure and flow.
- the individual components are provided in Figures 2 and 3 with the same reference numerals as in Fig. 1, wherein the pump chamber 19 and working chamber 5 are shown greatly simplified.
- control unit 14 is configured such that the control unit in the printing phase controls the exhaust valve 13 in response to the pressure measured by the pressure sensor 23 such that the pressure p in the Working chamber 19 remains constant during the stroke movement of the piston 20.
- control unit 14 measures the actual pressure pi St with the pressure sensor 23 and compares the actual pressure with the desired pressure p so ii, which is to be kept constant.
- the valve body of the exhaust valve 13 is opened or closed accordingly, so that the pressure is constant.
- the flow rate of the positive displacement pump is controlled in the first embodiment via the travel of the actuator body, which is measured by a displacement sensor 24.
- the control unit 14 is configured such that the actual flow rate or actual flow rate is calculated based on the measured travel of the operating body.
- the displaced air volume, which corresponds to the flow rate, is calculated from the product of the distance x measured by the displacement sensor 24 and the
- Control unit 14 controls the drive device 21 such that the actual delivery rate of the desired delivery rate or the actual delivery rate Qi St of the target delivery rate Q so ii corresponds.
- control unit 14 is configured such that in the printing phase, the drive device 21 as a function of the with the
- Pressure sensor 23 measured pressure is controlled such that the pressure p remains constant in the working chamber in the process of the actuating body.
- the feed rate of the actuator body increases or decreases the control unit 14, the feed rate of the actuator body.
- the rotational speed of the electric motor 22 can be increased or reduced.
- the outlet valve 13 is controlled by the control unit 14 such that the actual flow rate of the desired flow rate or actual flow rate Qi St of the target flow rate Q so ii corresponds.
- the exhaust valve is opened or closed further.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- External Artificial Organs (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016015110.2A DE102016015110A1 (en) | 2016-12-20 | 2016-12-20 | Positive displacement pump for medical fluids and blood treatment device with a positive displacement pump for medical fluids and method for controlling a positive displacement pump for medical fluids |
PCT/EP2017/083184 WO2018114727A1 (en) | 2016-12-20 | 2017-12-17 | Displacement pump for medical liquids, blood treatment device, and method for controlling same |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3559463A1 true EP3559463A1 (en) | 2019-10-30 |
EP3559463B1 EP3559463B1 (en) | 2020-12-02 |
Family
ID=60702792
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17816835.7A Active EP3559463B1 (en) | 2016-12-20 | 2017-12-17 | Displacement pump for medical liquids, blood treatment device, and method for controlling same |
Country Status (6)
Country | Link |
---|---|
US (1) | US11300120B2 (en) |
EP (1) | EP3559463B1 (en) |
JP (1) | JP7123968B2 (en) |
CN (1) | CN110088472B (en) |
DE (1) | DE102016015110A1 (en) |
WO (1) | WO2018114727A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110486246B (en) * | 2019-08-16 | 2021-01-12 | 杭州师范大学钱江学院 | Bidirectional metering pump and liquid pumping method thereof |
DE102019212831A1 (en) * | 2019-08-27 | 2021-03-04 | Robert Bosch Gmbh | Method for operating a pump and SCR supply system with such a pump |
WO2021072729A1 (en) * | 2019-10-18 | 2021-04-22 | Healtell (Guangzhou) Medical Technology Co., Ltd. | Microfluidic chip pumps and methods thereof |
DE102020211030A1 (en) | 2020-09-02 | 2022-03-03 | Robert Bosch Gesellschaft mit beschränkter Haftung | Method of operating a pump and fluid supply system using such a pump |
DE202022104589U1 (en) | 2022-08-12 | 2023-11-16 | Fresenius Medical Care Deutschland Gmbh | Diaphragm pump drive |
US20240100246A1 (en) * | 2022-09-23 | 2024-03-28 | Carefusion 303, Inc. | Reusable fluid pumping device |
CN115492747B (en) * | 2022-11-17 | 2023-03-10 | 季华实验室 | Fluid-driven diaphragm pump and adjusting system thereof |
LU103099B1 (en) * | 2023-04-12 | 2024-10-14 | Stratec Se | Pressure monitored piston pump |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3951568A (en) * | 1974-01-29 | 1976-04-20 | General Signal Corporation | Pump check valve control apparatus |
US4303376A (en) | 1979-07-09 | 1981-12-01 | Baxter Travenol Laboratories, Inc. | Flow metering cassette and controller |
DE3408331C2 (en) | 1984-03-07 | 1986-06-12 | Fresenius AG, 6380 Bad Homburg | Pumping arrangement for medical purposes |
US4950134A (en) * | 1988-12-27 | 1990-08-21 | Cybor Corporation | Precision liquid dispenser |
US5332372A (en) * | 1992-04-20 | 1994-07-26 | Warren Rupp, Inc. | Modular double-diaphragm pump |
DE4309380C2 (en) * | 1993-03-23 | 2000-01-05 | Infors Ag Bottmingen | System monitoring method |
US6041801A (en) | 1998-07-01 | 2000-03-28 | Deka Products Limited Partnership | System and method for measuring when fluid has stopped flowing within a line |
US6343614B1 (en) * | 1998-07-01 | 2002-02-05 | Deka Products Limited Partnership | System for measuring change in fluid flow rate within a line |
US6302653B1 (en) * | 1999-07-20 | 2001-10-16 | Deka Products Limited Partnership | Methods and systems for detecting the presence of a gas in a pump and preventing a gas from being pumped from a pump |
EP1536137B1 (en) * | 2003-11-25 | 2006-10-25 | Magneti Marelli Powertrain S.p.A. | Fuel pump for an internal combustion engine |
CN1757918A (en) * | 2005-10-26 | 2006-04-12 | 曾尚初 | High pressure liquid pump |
EP2152333B1 (en) * | 2007-05-07 | 2012-10-17 | Carmeli Adahan | Suction system |
EP2154371B1 (en) * | 2008-08-14 | 2018-09-19 | Bran + Lübbe GmbH | Pumping device |
NO334755B1 (en) * | 2008-12-08 | 2014-05-19 | Gjerdrum As Ing | Pump or compressor drive device |
EP2531729B1 (en) * | 2010-02-02 | 2020-03-04 | Dajustco Ip Holdings Inc. | Diaphragm pump with hydraulic fluid control system |
DE102012113087A1 (en) | 2012-12-24 | 2014-07-10 | B. Braun Melsungen Ag | Pump for medical purposes |
US10267303B2 (en) * | 2013-08-30 | 2019-04-23 | Flow Control Llc. | High viscosity portion pump |
DE102014016526A1 (en) * | 2014-10-30 | 2016-05-04 | Khs Corpoplast Gmbh | Device for pumping a liquid in a liquid line |
DE102016110136B3 (en) * | 2016-06-01 | 2017-08-10 | Andreas Hofer Hochdrucktechnik Gmbh | Pressure monitoring device |
-
2016
- 2016-12-20 DE DE102016015110.2A patent/DE102016015110A1/en not_active Ceased
-
2017
- 2017-12-17 CN CN201780079319.XA patent/CN110088472B/en active Active
- 2017-12-17 EP EP17816835.7A patent/EP3559463B1/en active Active
- 2017-12-17 US US16/469,671 patent/US11300120B2/en active Active
- 2017-12-17 WO PCT/EP2017/083184 patent/WO2018114727A1/en unknown
- 2017-12-17 JP JP2019554012A patent/JP7123968B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE102016015110A1 (en) | 2018-06-21 |
US11300120B2 (en) | 2022-04-12 |
EP3559463B1 (en) | 2020-12-02 |
US20190383282A1 (en) | 2019-12-19 |
CN110088472B (en) | 2021-08-17 |
JP7123968B2 (en) | 2022-08-23 |
WO2018114727A1 (en) | 2018-06-28 |
JP2020501864A (en) | 2020-01-23 |
CN110088472A (en) | 2019-08-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2018114727A1 (en) | Displacement pump for medical liquids, blood treatment device, and method for controlling same | |
EP1859168B1 (en) | Method and device for determining the effective delivery rate or for adjusting the speed of a peristaltic pump | |
DE3882966T2 (en) | IMPROVED FLOW METER WITH PRESSURE MEASUREMENT. | |
EP0941404B1 (en) | Pumping and metering device | |
DE102012209314B4 (en) | Device and method for dispensing or receiving a liquid volume | |
EP3188774B1 (en) | Method to determine the systemic compliance of a medical membrane pump drive | |
EP2814533B1 (en) | Blood pump | |
EP0409001B1 (en) | Liquid injection device | |
DE3139925A1 (en) | HIGH PRESSURE DOSING PUMP | |
DE3428828A1 (en) | DEVICE FOR CONVEYING MECHANICAL STRESS HIGH-SENSITIVE LIQUIDS | |
CN110809713B (en) | Liquid feeding device and fluid chromatograph | |
EP3559465B1 (en) | Operating device, method for operating an operating device, diaphragm pump having an operating device and a diaphragm pump device, and a blood treatment apparatus having a diaphragm pump | |
EP3648812A1 (en) | Pumping system, dialysis machine, and method for operating a pumping system | |
EP2388028A1 (en) | Method for operating a pump system | |
WO2018033490A1 (en) | Method for controlling a syringe pump | |
DE102016218426B3 (en) | Method for operating a high-pressure pump of a high-pressure injection system of a motor vehicle and control device and motor vehicle | |
EP3394441B1 (en) | Blood treatment device comprising a dosing line having a diaphragm pump and having a valve and method for dosing | |
DE102020117216A1 (en) | Method and device for dosing solutions | |
EP4128376A1 (en) | Pump having electroactive polymers | |
DE202012012626U1 (en) | Device for determining a volume flow and / or a volume of a fluid | |
WO2024033298A1 (en) | Diaphragm pump drive |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20190705 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20200615 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1341212 Country of ref document: AT Kind code of ref document: T Effective date: 20201215 Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502017008519 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210302 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210303 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20201202 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210302 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG9D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210405 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502017008519 Country of ref document: DE Ref country code: BE Ref legal event code: MM Effective date: 20201231 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210402 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201217 Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201217 |
|
26N | No opposition filed |
Effective date: 20210903 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201231 Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201231 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210402 Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201202 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201231 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230602 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20231121 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20231122 Year of fee payment: 7 Ref country code: DE Payment date: 20231121 Year of fee payment: 7 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 1341212 Country of ref document: AT Kind code of ref document: T Effective date: 20221217 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20221217 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20221217 |