WO2001007787A1 - Continuous flow rotary pump - Google Patents
Continuous flow rotary pump Download PDFInfo
- Publication number
- WO2001007787A1 WO2001007787A1 PCT/US1999/016300 US9916300W WO0107787A1 WO 2001007787 A1 WO2001007787 A1 WO 2001007787A1 US 9916300 W US9916300 W US 9916300W WO 0107787 A1 WO0107787 A1 WO 0107787A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- pump
- rotors
- blades
- outlet
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
- F04D13/064—Details of the magnetic circuit
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
- A61M60/135—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel inside a blood vessel, e.g. using grafting
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/205—Non-positive displacement blood pumps
- A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
- A61M60/237—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/40—Details relating to driving
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/408—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable
- A61M60/411—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/818—Bearings
- A61M60/825—Contact bearings, e.g. ball-and-cup or pivot bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D3/00—Axial-flow pumps
- F04D3/02—Axial-flow pumps of screw type
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
- A61M60/148—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/40—Details relating to driving
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/422—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/818—Bearings
- A61M60/824—Hydrodynamic or fluid film bearings
Definitions
- the present invention relates to a continuous flow rotary pump, preferably a continuos axial flow rotary pump for impelling liquid through at least one stage, by transferring energy from rotating elements of the pump to a continuous fluid stream, and more preferably the invention relates to a continuous axial flow rotary pump for use in blood circulation assistance, either in intravascular or extravascular circuits, with maximized efficiency and with no, or at least extremely minimized, blood damage, blood clotting, as well as minimum pump dimensions.
- an axial-flow rotary pump comprising a generically cylindrical casing and/or stator with a rotor, or a plurality of rotors mounted inside the stator to drive a fluid through the pump.
- the driving of the liquid to transfer the same from an inlet of the pump to a pump outlet is based in the provision of energy to the liquid to increase the fluid pressure thereof.
- This energy provides several undesired side effects.
- the elimination of these effects without impairing the pumping efficiency of the pump has been the aim of many developments in the field of pumps, particularly when handling of sensitive fluids, such as explosives, blood, etc., is involved.
- Contours, sizes, assemblies and relative positions of the different parts, as well as the stationary and movable surfaces of a pump are aspects and parameters that must be defined when designing the pump.
- the final objective of the design is to get a maximum efficiency of the pump with a minimum or no side effects resulting from the energy transferred to the fluid during the impelling thereof.
- the aim is to reach to a pump having a maximum efficiency without side effects causing blood damage and/or blood clotting during operation.
- Another important objective is to have a pump having a minimum size.
- the side effects resulting from the energy transferred during rotation of the pump comprise the generation of secondary or side flows, vortex, cavitation and separation of the flow from the surfaces of the stationary and movable parts of the pump.
- stator blades at the pump outlet can not effectively reduce the tangential component of the velocity and transform kinetic energy into pressure energy, no matter the shape or number of blades provided. Therefore, flow separation and side flows are formed at the stator blades which cause hemolysis and blood clotting.
- U.S. Patent No. 4,908,012 to John C. Moise discloses an implantable ventricular assistance pump having a tube in which a pump rotor and stator are coaxially contained, and purge fluid is introduced into stator blades of the pump to avoid creation of discontinuities in the blood path wall.
- the object of this cited patent is to reduce the size of the implant and minimize the risk of infection by reducing vibration, minimizing the percutaneous conduit, and directing most of the heat generated by the pump into the blood.
- the problem of the flow kinetic energy is not addressed and, in fact, the provision of the bladed stator does not reduce the tangential component of the flow speed.
- U.S. Patent No. 5,209,650 to Guy B. Lemieux discloses a pump integral with an electric motor and impeller assembly that rotates within a stator casing and is supported on hydrostatic radial and thrust bearings so as to avoid having to provide external seals or friction type bearings.
- rotors rotating in opposite directions are provided in this patent, it is clearly disclosed in its specification that the invention addresses the problems that occur with leaking mechanical seals and worn bearings.
- Lemieux specifically includes stay vanes pitched to diffuse the liquid from the second stage integral rotor and impeller assembly, the problem of kinetic energy and tangential components of the blood flow is not considered, and it can not be overcome in any way by providing, as disclosed and illustrated in this patent, axial rotors separated by axial stators.
- U.S. Patent No. 5,211,546 to Milton S. Issacson discloses an axial flow blood pump including stator blades and rotor, the object of which is to minimize the structure by which the rotor is suspended with respect to the stator to minimize the overall diameter of the motor and pump combination. No considerations are made relating to the tangential components of the blood flow and the side effects resulting thereof.
- U.S. Patent No. 5,588,812 to Lynn P. Taylor discloses an implantable electric blood pump having a motor stator and a rotor, the stator including blades for slowing and de-spinning the blood flow.
- U.S. Patent No. 5,678,306 to Richard J. Boze an discloses a method for optimizing each of a plurality of blood pump configuration parameters in the known pump components and variations. While Bozeman includes a diffuser with five to eight fixed blades for de- accelerating and redirecting the outflow at blood flow path exit to boost pump performance, the problem of the tangential components of the speed is not solved.
- U.S. Patent no. 5,707,218 issued to Timothy R. Maher discloses an axial-flow blood pump having a rotor suspended in ball-and-cup bearings which are blood-cooled but not actively blood-lubricated. While, Maher includes outlet stator blades for slowing and de-spinning the blood flow for discharge into the pump outlet, again, the problem of the tangential components in the blood flow is not addressed.
- Other rotary pumps are known from U.S. Patents Nos . 4,779,614; 5,040,944; 5,112,292 and 5,692,882 but these documents have not addressed the problem of the tangential component of the flow velocity.
- a continuous axial-flow pump having a minimum quantity of components and capable of providing a continuous flow without side effects resulting from the kinetic energy of the circulating fluid and affecting the fluid integrity, particularly to avoid the blood damage and blood clotting by eliminating the flow separation and secondary flows.
- the pump is effective in eliminating the tangential component of the flow velocity and transforming the kinetic energy of the flow into pressure energy.
- the flow at the pump outlet is axial without flow separation, and secondary flows disappear.
- FIG. 1 shows a diagram of velocity triangles according to the Euler equation for a conventional rotary pump
- FIG. 2 shows an elevation view, partially in section, of a basic construction for a pump in accordance with the invention
- FIG. 3 shows a perspective view of two adjacent impelling rotors according to the invention
- FIG. 4 shows an elevation view, partially in section, of a basic construction for a pump in accordance with another embodiment of the invention
- FIG. 5 shows an elevation view, partially in section, of a basic construction for a pump in accordance with even another embodiment of the invention
- FIG. 6 shows an elevation view, partially in section, of a basic construction for a pump in accordance with a further embodiment of the invention.
- FIG. 7 shows a diagram of velocity triangles according to the Euler equation for a rotary pump according to the present invention.
- the inventive rotary pump indicated by general numeral reference 1 is comprised of two adjacent impellers or rotary means, preferably a first rotor 2 having impeller means comprising twisted blades 3, and a second rotor 4 provided with impeller means comprising twisted blades 5. Blades 5 are twisted in opposite or reversed direction relative to blades 3.
- Rotors 2, 4 rotate, according to the concepts of the invention, in opposite directions, as shown by arrows A, B, around longitudinal axis X of the pump. According to the rotary directions indicated by arrows A, B, the left side of Figure 2 corresponds to inlet 6 of the pump while the right side of the Figure corresponds to outlet 7 of the pump.
- opposite outer ends 8, 9 of rotors 2, 4 are cone-shaped to accommodate the fluid flow.
- Inner facing ends 10, 11 of rotors 2, 4 are adjacent so that an outlet of rotor 2, when rotor 2 is an inlet rotor, is adjacent to an inlet of rotor 4 when rotor 4 defines an outlet rotor.
- the "inlet” and “outlet” terms are used to qualify the rotor that is at the inlet side 6 or at the outlet side 7 of the pump.
- the inlet and outlet of the pump will depend on the rotary directions of the rotors. Although the directions are indicated with arrows A, B these directions can be inverted if desired.
- Rotors 2, 4 may be conveniently arranged within a casing, preferably a cylindrical, tubular casing and stator motor components 13, 14 may be provided to drive the rotors.
- First rotor 2 rotates by the driving action of stator motor 13 and transfers energy to the fluid flow, preferably the blood flow, and increases the tangential component of velocity of the flow.
- Rotor 4 counter rotates under the action of stator motor component 14 and transfers pressure energy to the flow as well as eliminates the above cited tangential component at the outlet side of the pump for given combinations of heads and discharges or outputs.
- Fig. 3 shows rotors 2, 4 in a perspective view wherein blades 3, 4 are clearly depicted to see the location and development thereof around the • corresponding rotor.
- Blades 3, 4 are twisted around the rotors, more precisely, the blades extend hellicaly over the rotors with blades 3 defining a first-direction helix and blades 4 defining a second-direction helix opposite to the first- direction.
- Fig. 4 shows another embodiment of the invention wherein each rotor has an entire cone-shape and both rotors are faced and adjacent by their cone-bases.
- the numeral references used for identifying the equivalent components of the several embodiments comprise the same numeral reference used in Figures 2, 3 plus a dot (.) and the number of the corresponding Figure.
- the rotors in Fig. 4 are indicated with 2.4, 4.4.
- Casing 12.4 has a profile to accommodate rotors 2.4, 4.4 inside and motor components 13.4, 14.4 will be arranged correspondingly around casing 12.4, as it clearly shown.
- Fig. 5 shows another embodiment of the invention wherein each stator motor component 13.5, 14.5 is combined with a band 15, 16 for hydrodynamic suspension of the components .
- Fig. 6 shows another embodiment of the invention wherein each outer end of the rotors comprises a ball-socket bearing 17, 18 that is mounted on a corresponding support 19, 20 which in turn is fixed to casing 12.6.
- motor components 13, 14 have been illustrated the rotors may be actuated through other means such as one or more rotary wires connected to the rotors .
- ⁇ , Hi are angular speed, efficiency and head of the 1 st impeller, namely the first rotor
- ⁇ > 2 , ⁇ , H 2 are angular speed, efficiency and head of the 2 nd impeller, namely the second rotor
- Stator blades at the pump outlet are not necessary any more. There is an increase of hydraulic efficiency and there is a dramatic reduction of blood damage and blood clotting.
- the present invention provides a continuous flow rotary pump housing defining a blood flow path therethrough, and two impellers (rotors) with blades mounted within the pump housing. Rotors are adjacent and counter rotate to each other.
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US1999/016300 WO2001007787A1 (en) | 1999-07-26 | 1999-07-26 | Continuous flow rotary pump |
AU53177/99A AU5317799A (en) | 1999-07-26 | 1999-07-26 | Continuous flow rotary pump |
EP00941672A EP1212516B1 (en) | 1999-07-26 | 2000-06-23 | Hydraulic seal for rotary pumps |
ES00941672T ES2252018T3 (en) | 1999-07-26 | 2000-06-23 | HYDRAULIC SEAL FOR ROTATING PUMPS. |
DE60023523T DE60023523T2 (en) | 1999-07-26 | 2000-06-23 | Hydraulic seal for rotary pumps |
PCT/US2000/017324 WO2001007760A1 (en) | 1999-07-26 | 2000-06-23 | Hydraulic seal for rotary pumps |
AT00941672T ATE307964T1 (en) | 1999-07-26 | 2000-06-23 | HYDRAULIC SEALING FOR ROTATING PUMPS |
CNB008108498A CN1196866C (en) | 1999-07-26 | 2000-06-23 | Hydraulic seal for rotary pumps |
AU56346/00A AU5634600A (en) | 1999-07-26 | 2000-06-23 | Hydraulic seal for rotary pumps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US1999/016300 WO2001007787A1 (en) | 1999-07-26 | 1999-07-26 | Continuous flow rotary pump |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001007787A1 true WO2001007787A1 (en) | 2001-02-01 |
Family
ID=22273238
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/016300 WO2001007787A1 (en) | 1999-07-26 | 1999-07-26 | Continuous flow rotary pump |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU5317799A (en) |
WO (1) | WO2001007787A1 (en) |
Cited By (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2487403A (en) * | 2011-01-20 | 2012-07-25 | Sea Lix As | Conical helical rotor |
GB2487404A (en) * | 2011-01-20 | 2012-07-25 | Sea Lix As | Rotor for extracting energy from bidirectional fluid flows |
WO2013110140A1 (en) * | 2012-01-24 | 2013-08-01 | Aquaglobe Pty Ltd | A variable output generator and water turbine |
WO2013171053A1 (en) * | 2012-05-18 | 2013-11-21 | Xylem Ip Holdings Llc | Pump device |
US8900060B2 (en) | 2009-04-29 | 2014-12-02 | Ecp Entwicklungsgesellschaft Mbh | Shaft arrangement having a shaft which extends within a fluid-filled casing |
US8926492B2 (en) | 2011-10-11 | 2015-01-06 | Ecp Entwicklungsgesellschaft Mbh | Housing for a functional element |
US8932141B2 (en) | 2009-10-23 | 2015-01-13 | Ecp Entwicklungsgesellschaft Mbh | Flexible shaft arrangement |
US8944748B2 (en) | 2009-05-05 | 2015-02-03 | Ecp Entwicklungsgesellschaft Mbh | Fluid pump changeable in diameter, in particular for medical application |
US8979493B2 (en) | 2009-03-18 | 2015-03-17 | ECP Entwicklungsgesellscaft mbH | Fluid pump |
US8998792B2 (en) | 2008-12-05 | 2015-04-07 | Ecp Entwicklungsgesellschaft Mbh | Fluid pump with a rotor |
US9028216B2 (en) | 2009-09-22 | 2015-05-12 | Ecp Entwicklungsgesellschaft Mbh | Rotor for an axial flow pump for conveying a fluid |
US9067006B2 (en) | 2009-06-25 | 2015-06-30 | Ecp Entwicklungsgesellschaft Mbh | Compressible and expandable blade for a fluid pump |
US9089670B2 (en) | 2009-02-04 | 2015-07-28 | Ecp Entwicklungsgesellschaft Mbh | Catheter device having a catheter and an actuation device |
US9217442B2 (en) | 2010-03-05 | 2015-12-22 | Ecp Entwicklungsgesellschaft Mbh | Pump or rotary cutter for operation in a fluid |
US9314558B2 (en) | 2009-12-23 | 2016-04-19 | Ecp Entwicklungsgesellschaft Mbh | Conveying blades for a compressible rotor |
US9328741B2 (en) | 2010-05-17 | 2016-05-03 | Ecp Entwicklungsgesellschaft Mbh | Pump arrangement |
US9339596B2 (en) | 2009-12-23 | 2016-05-17 | Ecp Entwicklungsgesellschaft Mbh | Radially compressible and expandable rotor for a fluid pump |
US9358330B2 (en) | 2009-12-23 | 2016-06-07 | Ecp Entwicklungsgesellschaft Mbh | Pump device having a detection device |
US9416783B2 (en) | 2009-09-22 | 2016-08-16 | Ecp Entwicklungsgellschaft Mbh | Compressible rotor for a fluid pump |
US9416791B2 (en) | 2010-01-25 | 2016-08-16 | Ecp Entwicklungsgesellschaft Mbh | Fluid pump having a radially compressible rotor |
US9603983B2 (en) | 2009-10-23 | 2017-03-28 | Ecp Entwicklungsgesellschaft Mbh | Catheter pump arrangement and flexible shaft arrangement having a core |
US9611743B2 (en) | 2010-07-15 | 2017-04-04 | Ecp Entwicklungsgesellschaft Mbh | Radially compressible and expandable rotor for a pump having an impeller blade |
US9771801B2 (en) | 2010-07-15 | 2017-09-26 | Ecp Entwicklungsgesellschaft Mbh | Rotor for a pump, produced with a first elastic material |
US9867916B2 (en) | 2010-08-27 | 2018-01-16 | Berlin Heart Gmbh | Implantable blood conveying device, manipulating device and coupling device |
US9895475B2 (en) | 2010-07-15 | 2018-02-20 | Ecp Entwicklungsgesellschaft Mbh | Blood pump for the invasive application within a body of a patient |
US9974893B2 (en) | 2010-06-25 | 2018-05-22 | Ecp Entwicklungsgesellschaft Mbh | System for introducing a pump |
US10107299B2 (en) | 2009-09-22 | 2018-10-23 | Ecp Entwicklungsgesellschaft Mbh | Functional element, in particular fluid pump, having a housing and a conveying element |
US10172985B2 (en) | 2009-08-06 | 2019-01-08 | Ecp Entwicklungsgesellschaft Mbh | Catheter device having a coupling device for a drive device |
CN109826795A (en) * | 2019-02-11 | 2019-05-31 | 爱恒能源科技(上海)有限公司 | Can the bilobed wheel of power recovery become guide-vane pipeline pumping system and its working method |
US10391278B2 (en) | 2011-03-10 | 2019-08-27 | Ecp Entwicklungsgesellschaft Mbh | Push device for the axial insertion of an elongate, flexible body |
US10561773B2 (en) | 2011-09-05 | 2020-02-18 | Ecp Entwicklungsgesellschaft Mbh | Medical product comprising a functional element for the invasive use in a patient's body |
US20200254162A1 (en) * | 2013-03-13 | 2020-08-13 | Magenta Medical Ltd. | Blood pump |
US11648387B2 (en) | 2015-05-18 | 2023-05-16 | Magenta Medical Ltd. | Blood pump |
US11648392B2 (en) | 2016-11-23 | 2023-05-16 | Magenta Medical Ltd. | Blood pumps |
US11839540B2 (en) | 2012-06-06 | 2023-12-12 | Magenta Medical Ltd | Vena-caval apparatus and methods |
US11883274B2 (en) | 2013-03-13 | 2024-01-30 | Magenta Medical Ltd. | Vena-caval blood pump |
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US1071042A (en) * | 1911-05-31 | 1913-08-26 | Percy W Fuller | Multistage parallel-flow pump. |
US2470794A (en) * | 1943-12-20 | 1949-05-24 | Robert E Snyder | In-line fluid pump |
US3083893A (en) * | 1960-06-02 | 1963-04-02 | Benson Mfg Co | Contra-rotating blower |
US3276382A (en) * | 1964-03-05 | 1966-10-04 | Harvey E Richter | Fluid flow device |
-
1999
- 1999-07-26 WO PCT/US1999/016300 patent/WO2001007787A1/en active Application Filing
- 1999-07-26 AU AU53177/99A patent/AU5317799A/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1071042A (en) * | 1911-05-31 | 1913-08-26 | Percy W Fuller | Multistage parallel-flow pump. |
US2470794A (en) * | 1943-12-20 | 1949-05-24 | Robert E Snyder | In-line fluid pump |
US3083893A (en) * | 1960-06-02 | 1963-04-02 | Benson Mfg Co | Contra-rotating blower |
US3276382A (en) * | 1964-03-05 | 1966-10-04 | Harvey E Richter | Fluid flow device |
Cited By (87)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8998792B2 (en) | 2008-12-05 | 2015-04-07 | Ecp Entwicklungsgesellschaft Mbh | Fluid pump with a rotor |
US11852155B2 (en) | 2008-12-05 | 2023-12-26 | Ecp Entwicklungsgesellschaft Mbh | Fluid pump with a rotor |
US10495101B2 (en) | 2008-12-05 | 2019-12-03 | Ecp Entwicklungsgesellschaft Mbh | Fluid pump with a rotor |
US9964115B2 (en) | 2008-12-05 | 2018-05-08 | Ecp Entwicklungsgesellschaft Mbh | Fluid pump with a rotor |
US10662967B2 (en) | 2008-12-05 | 2020-05-26 | Ecp Entwicklungsgesellschaft Mbh | Fluid pump with a rotor |
US9404505B2 (en) | 2008-12-05 | 2016-08-02 | Ecp Entwicklungsgesellschaft Mbh | Fluid pump with a rotor |
US9649475B2 (en) | 2009-02-04 | 2017-05-16 | Ecp Entwicklungsgesellschaft Mbh | Catheter device having a catheter and an actuation device |
US9981110B2 (en) | 2009-02-04 | 2018-05-29 | Ecp Entwicklungsgesellschaft Mbh | Catheter device having a catheter and an actuation device |
US9089670B2 (en) | 2009-02-04 | 2015-07-28 | Ecp Entwicklungsgesellschaft Mbh | Catheter device having a catheter and an actuation device |
US10406323B2 (en) | 2009-02-04 | 2019-09-10 | Ecp Entwicklungsgesellschaft Mbh | Catheter device having a catheter and an actuation device |
US11229774B2 (en) | 2009-02-04 | 2022-01-25 | Ecp Entwicklungsgesellschaft Mbh | Catheter device having a catheter and an actuation device |
US8979493B2 (en) | 2009-03-18 | 2015-03-17 | ECP Entwicklungsgesellscaft mbH | Fluid pump |
US8900060B2 (en) | 2009-04-29 | 2014-12-02 | Ecp Entwicklungsgesellschaft Mbh | Shaft arrangement having a shaft which extends within a fluid-filled casing |
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