WO2019219868A1 - Dispositif de montage et procédé pour le montage d'au moins un segment magnétique sur un corps de cylindre destiné à un système d'assistance cardiaque - Google Patents

Dispositif de montage et procédé pour le montage d'au moins un segment magnétique sur un corps de cylindre destiné à un système d'assistance cardiaque Download PDF

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Publication number
WO2019219868A1
WO2019219868A1 PCT/EP2019/062721 EP2019062721W WO2019219868A1 WO 2019219868 A1 WO2019219868 A1 WO 2019219868A1 EP 2019062721 W EP2019062721 W EP 2019062721W WO 2019219868 A1 WO2019219868 A1 WO 2019219868A1
Authority
WO
WIPO (PCT)
Prior art keywords
segment
chamber
cylinder body
magnet segment
magnetic
Prior art date
Application number
PCT/EP2019/062721
Other languages
German (de)
English (en)
Inventor
Kai Von Garnier
Uwe Vollmer
David Minzenmay
Original Assignee
Kardion Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kardion Gmbh filed Critical Kardion Gmbh
Publication of WO2019219868A1 publication Critical patent/WO2019219868A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/278—Surface mounted magnets; Inset magnets
    • H02K1/2783—Surface mounted magnets; Inset magnets with magnets arranged in Halbach arrays
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
    • H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
    • H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
    • H02K49/106—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with a radial air gap

Definitions

  • Magnets are magnetized especially for small motors, bearings and couplings after assembly. This applies to electric motors, particle accelerators, passive magnetic couplings and magnetic bearings. In this case, the assembly or joining of magnetic segments typically takes place individually and the magnetization subsequently occurs.
  • the object of the invention is to further improve the devices and methods known in the art, in particular for a simplified and precise joining of magnetic segments.
  • a mounting device for attaching at least one magnet segment to a cylinder body for a cardiac assist system has a receiving device, a fixing device and a modification device.
  • the receiving device is preferably annular or partially annular in shape and has at least one chamber for receiving at least one magnetic segment.
  • the receiving device with respect to the cylinder body to a radius which is changeable from a rest state to a mounting state in which the magnet segment is arranged or can be arranged on the cylinder body.
  • the fixing device is designed to fix the magnetic segment at least temporarily in or on the chamber.
  • the changing device is designed to effect a change in the radius of the receiving device from the idle state to the mounting state in order to arrange the magnet segment on the cylinder body.
  • a mounting device presented here allows the production at least one coupling element for a magnetic coupling example, for a heart support system.
  • the cylindrical coupling element produced by means of the mounting device can serve as an inner shaft or an inner rotor of the magnetic coupling for a pump of the cardiac assist system.
  • This inner rotor may be coaxially disposed in an outer rotor or be arrangeable.
  • the coupling element produced can also serve in the form of a hollow cylinder as the outer rotor of the magnetic coupling, the coaxial can be arranged around the inner rotor.
  • Such a magnetic coupling can enable a specific type of coupling whose function is based on the action of a magnetic field.
  • the outer or inner coupling element may be connected to a motor or connectable.
  • a primary purpose of the magnetic coupling may be to connect two rotating shafts or to magnetically connect one rotating shaft to another shaft while allowing some degree of misalignment or end movement, or both.
  • torque is transmitted, for example, by a pair of opposing magnets that produce a radial induction flux.
  • Such magnetic clutches can be constructed in example by an additional magnet or an additional pair of magnets generates the repulsive forces around the shaft in the radial direction, so that a rotor shaft is better centered in the radial direction in the operating process.
  • the altering means may be further adapted to effectuate further alteration of the radius of the receptacle from the assembly state back to the resting state to effect removal of the receptacle from the manufactured coupling element and / or re-inclusion of a magnet segment into the chamber or to allow another chamber to re-arrange a magnet segment on the cylinder body.
  • the mounting device can be designed to receive an already magnetized magnet segment.
  • the chamber can be formed to form-fit the magnetic segment, for example, at least partially encompass.
  • the chamber may be formed to receive the magnet segment in the form of a circular ring section. So can one accordingly shaped magnetic segment form fit to an outer wall of the cylinder body or to an inner wall of a cavity of a Hohlzy- linder stressess be arranged.
  • the receiving device has at least one further chamber for accommodating at least one further magnet segment and / or the fixing device is designed to fix the further magnet segment at least temporarily in or on the further chamber ,
  • the receiving device has at least one further chamber for accommodating at least one further magnet segment and / or the fixing device is designed to fix the further magnet segment at least temporarily in or on the further chamber ,
  • the chamber and / or the further chamber may be formed, for example, as a jaw of a jaw chuck.
  • the jaw chuck can be a four-jaw chuck for accommodating four radially arranged magnet segments or an octagonal jaw chuck for accommodating eight radially arranged magnet segments.
  • the number of jaws can correspond to the number of magnetic segments to be attached.
  • the fixing device can be designed to magnetically fix the magnetic segment in or on the chamber.
  • the fixing device can be designed to fix the magnetic segment permanently magnetically or ferromagnetically or electromagnetically.
  • a temporary fixation by the fixing device is made possible.
  • an electromagnetic fixation a simple release of the magnet segment from the chamber can advantageously already be effected in the mounting state of the receiving device by repositioning a magnetic field.
  • the changing device can be configured to permanently arrange the magnet segment arranged on the cylinder body for a predefined time on the cylinder body in order to bring about a permanent fastening of the magnet segment to the cylinder body.
  • the magnet segment can be fastened in a material-locking manner, for example by means of an applied adhesive.
  • the receiving device has a deactivation device which is designed to effect deactivation or release of the fixing device in the mounting state of the receiving device.
  • the deactivation device may be designed to effect a reversal of a magnetic field or to effect a mechanical removal or removal of the receiving device from the magnet segment arranged on the cylinder body. After a permanent attachment of the magnet segment to the cylinder body, the finished coupling element can thus be released from the mounting device.
  • the mounting device can advantageously be shaped and / or formed to attach the magnet segment to the cylinder body, which forms a shaft, for example a rotor, of a magnetic coupling of a cardiac assist system.
  • the mounting device can be used in particular for producing very small clutch elements for a magnetic coupling, for example, a pump of the cardiac assist system.
  • a method for attaching at least one magnet segment to a cylinder body for a cardiac assist system comprises a step of changing.
  • a radius of a preferably annular receiving device with at least one chamber in which the magnet segment is received of a Resting state changed to a mounting state with respect to the cylinder body to arrange the magnet segment on the cylinder body to allow the attachment.
  • This method can be carried out using the assembly device presented above.
  • the method may comprise a step of insertion, in which the at least one magnetic segment is inserted into the at least one chamber of the receiving device.
  • This method can be implemented, for example, in software or hardware or in a mixed form of software and hardware, for example in a control unit.
  • FIG. 1 is a perspective view of a cardiac assistance system
  • FIG. 2 is a schematic cross-sectional view of a magnetic coupling of a pump for a cardiac assist system
  • FIG. 3 is a schematic cross-sectional view of a mounting device for attaching at least one magnet segment to a cylinder body for a cardiac assist system in a resting state;
  • FIG. 6 shows a schematic cross-sectional view of a coupling element for a magnetic coupling
  • FIG. 7 shows a flowchart of a method for attaching at least one magnet segment to a cylinder body for a Flerzunterstützungssystem according to an exemplary embodiment.
  • FIG. 1 shows a perspective side view of a Flerzunterst Scheme 100 according to an embodiment.
  • the Flerzunter support system only provides an exemplary application for the approach presented here.
  • the Flerzunterstweilungssystem 100 is designed as a left ventricular Flerzunterstweilungssystem 100, which is arranged for use in the left Flerzhunt.
  • the aerofoil support system 100 comprises a head unit 105, an outlet unit 110 and a line unit 115 arranged between the head unit 105 and the outlet unit 110.
  • the fluter support system 100 has a pump 120, which according to this embodiment Example, as an axial pump is executed.
  • the pump 120 is connected to a motor according to this embodiment.
  • the bottle support system 100 has a tubular or tubular shape Build up.
  • the cardiac assist system 100 is realized as a minimally invasive axial centrifugal pump system insertable through a catheter into a blood vessel, such as the aorta or ventricle.
  • the pump 120 comprises a pump housing 130, which is realized as a tubular section of the cardiac assist system 100 and has, by way of example, three opposite lateral outlet openings 135 for laterally discharging a conveyed medium, here blood.
  • the pump housing 130 only one, two or even more than three distributed in the circumferential direction outlet openings 135.
  • a pump rotor 140 also called impeller, which in the assembled state shown in Fig. 1 of the axial pump sectionally opposite the outlet openings 135.
  • the pump rotor 140 serves for axial suction and radial or diagonal discharges of the blood via the outlet openings 135.
  • the pump rotor 140 In order to ensure the most efficient and gentle transport of the blood, the pump rotor 140 according to an embodiment, at least one helically wound blade element.
  • the skeleton line of the blade element has a turning point in the region of the upstream beginning of the outlet openings 135.
  • the pump rotor 140 of the pump 120 comprises a cylinder body 145 in the form of a rotor, which is rotatably mounted by means of a magnetic coupling.
  • This magnetic coupling has been produced at least in part using a mounting device, as presented in FIGS. 3 to 5.
  • FIG. 2 shows a schematic cross-sectional view of a magnetic coupling 200 of a pump 120 for a cardiac assist system according to FIG an embodiment. This may be the pump 120 described in FIG. 1.
  • cylinder body 145 On an outer side of the cylinder body 145, which is formed as an inner rotor in the form of a shaft, four magnetic segments 205 are mounted radially by way of example.
  • An outer magnet ring in the form of the additional magnet segments 215 has, according to this embodiment, the same pole pair number as in the rotor, here by way of example as an embodiment with a Flalbach array, also called the Flalbach arrangement.
  • the cylinder body 145 with the magnetic segments 205 and / or the Flohlzylinder stresses 210 with the additional magnet segments 215 has been prepared using a mounting device, as presented in Figs. 3-5.
  • the float cylinder body 210 has an outer diameter of less than 2 cm or less than 1 cm, and the cylinder body 145 has an outer diameter of less than 1 cm or less than 5 mm or less than 2 mm. Larger or substantially smaller dimensions than the dimensions mentioned are also possible.
  • FIG. 3 shows a schematic cross-sectional view of a mounting device 300 for attaching at least one magnet segment 205 to a cylinder body 145 for a lens support system according to an exemplary embodiment.
  • the mounting device 300 has a receiving device 305, a fixing device 307 and a changing device.
  • the receiving device 305 has an annular or partially annular shape and has at least one chamber 310 for receiving at least one magnetic segment 205.
  • the receiving device 305 has a radius which can be changed from an idle state 315 shown here to an assembled state in which the magnet segment 205 is arranged or can be arranged on the cylinder body 145.
  • the fixing device 307 is designed to fix the magnet segment 205 at least temporarily in or on the chamber 310.
  • the changing device is configured to cause the radius of the receiving device 305 to be changed from the rest state 315 to the mounting state in order to arrange the magnet segment 205 on the cylinder body 145.
  • the receiving device 305 has, by way of example, four of the chambers 310 for radial reception of four of the magnet segments 205, which are already magnetized according to this exemplary embodiment.
  • the fixing device 307 is designed to fix the four magnet segments 205 at least temporarily in or on the four chambers 310.
  • the chambers 310 are formed according to this exemplary embodiment for receiving the magnet segments 205 in the form of circular ring sections.
  • the chambers 310 are formed as jaws of a jaw chuck.
  • the fixing device 307 is designed in accordance with this exemplary embodiment to magnetically fix the magnet segments 205 in or on the chambers 310.
  • the fixing device 307 can be designed to positively and / or non-positively lock the magnet segments 205 in or against the chambers 310 in other suitable ways.
  • the mounting device 300 presented here can also be referred to as a mounting device 300 for radial arrangements of permanent magnets. Using the mounting device 300, it is advantageously possible to simultaneously install and / or join a plurality of magnet segments 205 that are already magnetized. A possible subsequent magnetization could lead to incomplete or defective magnetization. In a special case with a half-axial array, repulsive forces between the magnetic segments 205 could also prevent a simple placement of the magnet segments 205 on a shaft body in the form of the cylinder body 145. With the mounting device 300 presented here, the arrangement of a Flalbach array is easy to carry out.
  • a joining of the plurality of magnetized magnetic segments 205 is made possible in a single assembly step or in a Flalbach array in two assembly steps. This results in a maximum utilization of the magnetic material, a time savings in the joining process and an increase in precision in positioning. In addition, it is advantageously possible to machine Flalbach arrangements.
  • the mounting device 300 consists of the receiving device 305 in the form of a ring body with a variable radius and with predetermined for the magnetic segments 205 positioning, here the four chambers 310.
  • the receiving device 305 is formed as a Achtbackenfutter.
  • This annular body is arranged concentrically to a cylindrical body, in this case the cylinder body 145, or, according to an alternative embodiment, a hollow cylindrical body.
  • the magnet segments 205 are temporarily fixed radially by means of either permanent-magnetic or ferromagnetic or electromagnetic devices of the fixing device 307.
  • 4 shows a schematic cross-sectional view of a mounting device 300 according to an exemplary embodiment. This may be the mounting device 300 described in FIG. 3, wherein in FIG.
  • the changing device 400 of the mounting device 300 is additionally shown.
  • the changing device 400 is coupled to the receiving device 305 and / or the fixing device 307 and designed to change the radius of the receiving device 305 and / or of the fixing device 307.
  • the changing device 400 is for this purpose coupled to an optional drive device 405, which in turn can be activated by an optional control device 410 of the mounting device 300.
  • the drive device 405 is designed as an electric motor.
  • FIG. 5 shows a schematic cross-sectional view of a mounting device 300 according to an exemplary embodiment. This may be the mounting device 300 described in FIG. 3 or in FIG. 4, with the difference that the radius of the receiving device 305 has been changed by the changing device from the idle state to the mounting state 500 in which the magnet segments 205 are arranged on the cylinder body 145.
  • the mounting device 300 has a deactivation device which is designed to effect a deactivation or release of the fixing device 307 in the mounting state 500 of the receiving device 305.
  • the deactivation device is designed, for example, to change a magnetic field of the fixing device 307 or to move to the Removing the fixing device 307 from the magnet segments 205 to effect.
  • the magnet segments 205 were brought into an end position on the cylinder body 145, where they were or could finally be fixed by gluing according to this exemplary embodiment.
  • the radius has been reduced when transferred to the assembly state 500 against the idle state.
  • the radius when transferring to the mounting state relative to the idle state can be increased, if the cylinder body is formed as a hollow cylinder body, as shown in FIG. 2, and magnetic segments by means of the mounting device 300 of a cavity in the Hollow cylinder body are arranged on the inside of the hollow cylinder body.
  • FIG. 6 shows a schematic cross-sectional illustration of a coupling element 600 for a magnetic coupling according to an exemplary embodiment. It may be a coupling element which can be produced or produced by the mounting device presented in one of FIGS. 3 to 5.
  • the fixing device 307 shown in FIG. 5 has been made inactive for temporarily fixing the magnet segments 205 and / or the receiving device 305.
  • the fixing device 307 and / or the receiving device 305 were withdrawn or removed according to an embodiment by the deactivation device in radial direction from the magnetic segments 205 or, according to an alternative embodiment, in the case of an electromagnetic fixing device, reversed or deactivated a magnetic field.
  • resetting the radius of the receiving device 305 into the rest state and inserting new magnetic segments 605 has continued an assembly cycle, whereby the coupling element 600 has eight magnet segments 205, 605 according to this exemplary embodiment.
  • the assembly process may be performed in two or more steps. This offers advantages in a Halbach arrangement.
  • a coupling element 600 shown here is formed for use in a magnetic coupling in a pump of a left ventricular cardiac assist system.
  • FIG. 7 shows a flow chart of a method 700 for attaching at least one magnet segment to a cylinder body for a heart support system according to one exemplary embodiment. This can be a method 700 that can be carried out using one of the assembly devices described with reference to FIGS. 3 to 5.
  • the method 700 includes a step 705 of changing.
  • step 705 of varying a radius of an annular receiver having at least one chamber in which the magnet segment is received is changed from a rest state to a mounting state to position the magnet segment on the cylinder body to allow mounting ,
  • the method 700 may include a step 710 of insertion, in which the at least one magnetic segment is inserted into the at least one chamber of the receiving device.
  • the method 700 may further include a step 715 of deactivating by deactivating a fixation device configured to at least temporarily fix the magnet segment in or against the chamber to release the magnet segment from the chamber to effect.
  • an exemplary embodiment comprises a "and / or" link between a first feature and a second feature
  • this is to be read such that the exemplary embodiment according to one embodiment includes both the first feature and the second feature and according to another embodiment. either only the first feature or only the second feature.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
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Abstract

L'invention concerne un dispositif de montage (300) permettant de monter au moins un segment magnétique (205) sur un corps de cylindre (145) destiné à un système d'assistance cardiaque. Le dispositif de montage (300) comprend un moyen de réception (305), un moyen de fixation (307) et un moyen de modification (400). Le moyen de réception (305) a une forme annulaire et comporte au moins une chambre (310) destinée à recevoir l'un au moins des segments magnétiques (205). En outre, le moyen de réception (305) a un rayon qui peut être modifié d'un état de repos (315) à un état de montage dans lequel le segment magnétique (205) est disposé ou peut être disposé sur le corps de cylindre (145). Le moyen de fixation (307) est conçu pour fixer le segment magnétique (205) au moins temporairement dans ou sur la chambre (310). Le moyen de modification (400) est conçu pour modifier le rayon du moyen de réception (305) depuis l'état de repos (315) à l'état de montage afin de disposer le segment magnétique (205) sur le corps de cylindre (145).
PCT/EP2019/062721 2018-05-16 2019-05-16 Dispositif de montage et procédé pour le montage d'au moins un segment magnétique sur un corps de cylindre destiné à un système d'assistance cardiaque WO2019219868A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018207591.3 2018-05-16
DE102018207591.3A DE102018207591A1 (de) 2018-05-16 2018-05-16 Montagevorrichtung und Verfahren zum Anbringen zumindest eines Magnetsegments an einen Zylinderkörper für ein Herzunterstützungssystem

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WO2019219868A1 true WO2019219868A1 (fr) 2019-11-21

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PCT/EP2019/062721 WO2019219868A1 (fr) 2018-05-16 2019-05-16 Dispositif de montage et procédé pour le montage d'au moins un segment magnétique sur un corps de cylindre destiné à un système d'assistance cardiaque

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DE (1) DE102018207591A1 (fr)
WO (1) WO2019219868A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210313869A1 (en) * 2018-05-16 2021-10-07 Kardion Gmbh Permanent-magnetic radial rotating joint and micropump comprising such a radial rotating joint
US11368081B2 (en) 2018-01-24 2022-06-21 Kardion Gmbh Magnetic coupling element with a magnetic bearing function
US11754075B2 (en) 2018-07-10 2023-09-12 Kardion Gmbh Impeller for an implantable, vascular support system
US11944805B2 (en) 2020-01-31 2024-04-02 Kardion Gmbh Pump for delivering a fluid and method of manufacturing a pump
US12005248B2 (en) 2018-05-16 2024-06-11 Kardion Gmbh Rotor bearing system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5831365A (en) * 1995-06-30 1998-11-03 Kaman Electromagnetics Corporation Detachable magnet carrier for permanent magnet motor
EP2403109A2 (fr) * 2010-06-29 2012-01-04 Schaeffler Technologies AG & Co. KG Elément magnétique, en particulier pour machine électrique, et procédé de fabrication d'un élément
EP2960515A1 (fr) * 2014-06-24 2015-12-30 Grundfos Holding A/S Couplage magnétique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5831365A (en) * 1995-06-30 1998-11-03 Kaman Electromagnetics Corporation Detachable magnet carrier for permanent magnet motor
EP2403109A2 (fr) * 2010-06-29 2012-01-04 Schaeffler Technologies AG & Co. KG Elément magnétique, en particulier pour machine électrique, et procédé de fabrication d'un élément
EP2960515A1 (fr) * 2014-06-24 2015-12-30 Grundfos Holding A/S Couplage magnétique

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11368081B2 (en) 2018-01-24 2022-06-21 Kardion Gmbh Magnetic coupling element with a magnetic bearing function
US11804767B2 (en) 2018-01-24 2023-10-31 Kardion Gmbh Magnetic coupling element with a magnetic bearing function
US20210313869A1 (en) * 2018-05-16 2021-10-07 Kardion Gmbh Permanent-magnetic radial rotating joint and micropump comprising such a radial rotating joint
US12005248B2 (en) 2018-05-16 2024-06-11 Kardion Gmbh Rotor bearing system
US11754075B2 (en) 2018-07-10 2023-09-12 Kardion Gmbh Impeller for an implantable, vascular support system
US11944805B2 (en) 2020-01-31 2024-04-02 Kardion Gmbh Pump for delivering a fluid and method of manufacturing a pump

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