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WO2025163009A1 - Boîtier de pompe et pompe - Google Patents

Boîtier de pompe et pompe

Info

Publication number
WO2025163009A1
WO2025163009A1 PCT/EP2025/052285 EP2025052285W WO2025163009A1 WO 2025163009 A1 WO2025163009 A1 WO 2025163009A1 EP 2025052285 W EP2025052285 W EP 2025052285W WO 2025163009 A1 WO2025163009 A1 WO 2025163009A1
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
pump housing
outlet
pump
chamber wall
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.)
Pending
Application number
PCT/EP2025/052285
Other languages
German (de)
English (en)
Inventor
Sebastian Victor Jansen
Ulrich Steinseifer
Thomas Schmitz-Rode
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rheinisch Westlische Technische Hochschuke RWTH
Original Assignee
Rheinisch Westlische Technische Hochschuke RWTH
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 Rheinisch Westlische Technische Hochschuke RWTH filed Critical Rheinisch Westlische Technische Hochschuke RWTH
Publication of WO2025163009A1 publication Critical patent/WO2025163009A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • A61M60/104—Extracorporeal pumps, i.e. the blood being pumped outside the patient's body
    • A61M60/109—Extracorporeal pumps, i.e. the blood being pumped outside the patient's body incorporated within extracorporeal blood circuits or systems
    • 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
    • A61M60/226—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 radial components
    • A61M60/232—Centrifugal 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
    • A61M60/419—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven magnets
    • 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
    • A61M60/50—Details relating to control
    • A61M60/508—Electronic control means, e.g. for feedback regulation
    • A61M60/515—Regulation using real-time patient data
    • A61M60/531—Regulation using real-time patient data using blood pressure data, e.g. from blood pressure sensors
    • 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
    • A61M60/81—Pump housings
    • 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
    • A61M60/81—Pump housings
    • A61M60/814—Volutes
    • 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
    • A61M60/81—Pump housings
    • A61M60/816—Sensors arranged on or in the housing, e.g. ultrasound flow sensors
    • 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

Definitions

  • the invention relates to a pump housing, in particular a blood pump, comprising a pump chamber in which a rotor rotatable about an axis of rotation is arranged, with which a fluid can be conveyed from an inlet of the pump housing to an outlet of the pump housing, wherein the pump chamber comprises an outlet chamber which is arranged in a region radially outwardly around the rotor and which opens into the outlet.
  • the invention further relates to a pump, in particular a blood pump with such a pump housing.
  • Such a rotor is preferably rotatably mounted, e.g., on or by means of a contact-based bearing located in the pump chamber, e.g., on a shaft or a ball or spherical surface.
  • a rotor can be at least rotatably mounted in a non-operating pump housing, which in particular means that the rotor is only stably mounted for rotation about the rotational axis during operation of a pump comprising the pump housing.
  • this is preferably the case with blood pumps in which the rotor is surrounded by blood during operation, which at least contributes to the hydrodynamic bearing and/or the rotor is supported during operation by at least one A magnetic field acting on the rotor, e.g. a magnetic field that absorbs tilting moments, is held in a floating state in the pump housing or in a rotatable state supported on a contact-based bearing, and in particular is set into rotation.
  • a magnetic field acting on the rotor e.g. a magnetic field that absorbs tilting moments
  • At least one rotating magnetic field generated by a drive of a pump acts through at least one wall of the pump housing, in particular the wall of the base, on the rotor, in particular on magnetic or at least magnetizable elements integrated therein, e.g. permanent magnets.
  • the invention described below is preferably used in blood pumps, but can in principle be used in pumps of any kind.
  • the outlet chamber of a pump housing is often also referred to in technical terms or in English as a “volute”.
  • this refers to a spatial region of the pump chamber which is arranged outside the rotor or around the blade ends at least in an axial height region in which the blades of the rotor are located, or in an axial region of the entire axial extent of the rotor. In the direction of rotation during operation or in the intended direction of rotation of the rotor, this outlet chamber opens into the outlet of the pump housing.
  • the pumped fluid is thus pumped from the inlet of the pump housing, which is preferably located axially in front of the blades of the rotor, with the blades radially outwards and in the circumferential direction around the axis of rotation/the rotor towards the outlet.
  • the inlet and/or outlet can preferably be formed as nozzles on the pump housing.
  • the inlet nozzle is preferably coaxial with the rotational axis.
  • the outlet nozzle is preferably tangential or at least substantially tangential to the radially outer wall of the outlet chamber.
  • such an outlet space can expand at least in some regions with increasing circumferential angle in the radial direction, in particular also in the axial direction.
  • the outlet chamber is spiral-shaped, at least in some areas. Outlet chambers shaped in this way are often also referred to as spiral chambers. In another embodiment, which can also be provided in the invention, the outlet chamber is provided with no radial and/or axial expansion.
  • Pumps of this type in which the pumped fluid is accelerated radially outwards, in particular so-called radial pumps, are used in medical technology, for example, to pump blood in order to replace a patient's heart or at least to support it temporarily during recovery.
  • These pumps are characterized by the fact that they are often used over a wide operating point range, even though they are designed for only one fixed operating point, known as the design point. Operating blood pumps outside the design point can be associated with complications such as hemolysis or thrombus formation, e.g., due to blood recirculation.
  • this object is achieved in a pump housing mentioned at the outset in that a fluid chamber is arranged radially outside around the outlet space, which fluid chamber is separated from the outlet space by a chamber wall which is at least partially movable.
  • the invention can be provided in such a way that the movable chamber wall can be moved, in particular displaced, by changing the pressure difference between the sides radially on both sides of the chamber wall.
  • the movable chamber wall is movable, in particular displaceable, by a pressure change in the outlet chamber.
  • a pressure change can be caused, for example, by changing the speed of the rotor or generated externally through the inlet or outlet.
  • the movable chamber wall is movable, in particular displaceable, by a pressure change in the fluid chamber.
  • the chamber wall is designed to be movable over its entire circumferential extent around the axis of rotation, in particular over 360 degrees.
  • this pump comprises a pump housing according to the invention and a drive with which the rotor can be driven in the pump housing, preferably, wherein the drive drives the rotor through a wall of the pump housing by means of magnetic interaction, which opens up the preferred use as a blood pump.
  • the outlet space of the pump housing is thus not limited radially on the outside by rigid walls of the pump housing, but rather by the said movable chamber wall.
  • the invention can be effected in such a way that, upon a reduction in the pressure in the fluid chamber, in particular relative to the pressure in the outlet chamber, the chamber wall is moved in a direction away from the axis of rotation, and upon an increase in the pressure in the fluid chamber, in particular relative to the pressure in the outlet chamber, the chamber wall is moved in the direction of the axis of rotation or toward the rotor or the blades.
  • the free cross-section of the outlet chamber can be increased
  • the free cross-section of the outlet chamber can be reduced.
  • a pump according to the invention preferably has a control device with which the pressure in the fluid chamber and/or in the outlet chamber can be changed. Such a change can be made independently/without knowledge of the currently prevailing pressure in the fluid chamber and/or in the outlet chamber, or dependently/with knowledge of the currently prevailing pressure in the fluid chamber and/or in the outlet chamber, e.g., after measuring the pressure in the fluid chamber and/or in the outlet chamber.
  • the hydraulic properties of a pump with a pump housing according to the invention can thus be changed by geometric changes in the pump housing, in particular during operation of the pump, which is particularly advantageous in blood pumps.
  • the operating behavior of pumps can be adjusted, for example, by changing the outlet chamber cross-section.
  • the operating behavior of blood pumps can be adjusted to different recovery states of a diseased heart.
  • the aforementioned adjustments can preferably be made actively, e.g., by a previously mentioned control device, or passively, e.g., by changing the operating point. automatically adjusting pressure change in the fluid chamber and/or the outlet space.
  • the change in pressure in the fluid chamber and/or the outlet chamber can be achieved by any means, e.g., by a volume-changing element arranged in the fluid chamber, which can change its volume through an external, e.g., electrical, control.
  • a volume-changing element can be part of the aforementioned control device.
  • the pump housing has a chamber connection opening into the fluid chamber, through which a fluid can be introduced into the fluid chamber, e.g. injected, or led out of the fluid chamber, e.g. sucked out.
  • the fluid chamber can be open to the environment or to a passive fluid reservoir through the chamber connection, in particular so that the movement of the chamber wall occurs purely passively through the hydraulic pressure on the blood side (radially inward of the chamber wall), in particular against the material elasticity of the chamber wall.
  • An increase in pressure in the fluid chamber can also be achieved by injecting fluid into the fluid chamber and a reduction in pressure by sucking fluid out of the fluid chamber. Injection or suction can preferably be performed actively using an actuator.
  • a pump device can preferably be connected to the aforementioned chamber connection. This can, for example, be part of the aforementioned control device.
  • the fluid used is preferably an incompressible fluid, and in the case of blood pumps, an aqueous sodium chloride solution is preferred.
  • a preferred embodiment provides that pressure changes, in particular passively occurring and/or actively generated pressure changes
  • the shape of the chamber wall viewed in cross-section parallel to the axis of rotation, can be varied between concave to the rotor and convex to the rotor, in particular starting from a rectilinear chamber wall existing without a pressure difference between the fluids on either side of the chamber wall.
  • the chamber wall is understood to be convex to the rotor if it is bulged toward the rotor, in particular between two fastening points.
  • a state in which the chamber wall is concave to the rotor can exist such that the radially outer surface of the chamber wall, i.e., the one facing into the fluid chamber, contacts the inner surface of the fluid chamber located radially outside of it. This is particularly achievable when all fluid has been removed from the fluid chamber, e.g., pumped out or forced out. In this way, the maximum possible internal cross-section of the outlet chamber is defined.
  • the chamber wall is formed from an elastomer, in particular silicone. This enables movement of the chamber wall through reversible expansion of the chamber wall, starting from a relaxed state of the chamber wall.
  • the chamber wall viewed in cross-section parallel to the rotor's axis of rotation, is rectilinear.
  • the chamber wall is formed from a plastic or metal foil. Movement of the chamber wall is preferably enabled by the chamber wall being stretchable, starting from a state in which the chamber wall is secured between two axially spaced-apart fastening points with an axial oversize.
  • a preferred design of the chamber wall provides that it is enclosed by a ring that is completely closed in the circumferential direction around the axis of rotation is formed, wherein a pipe socket is arranged on the ring, in particular arranged tangentially to the chamber wall, which opens radially inward into the chamber wall, preferably wherein the pipe socket is formed integrally with the ring.
  • the pipe socket is made of the same material as the ring.
  • the ring can be molded together with the pipe socket, e.g., by injection molding an elastomer, preferably silicone.
  • outlet of the pump housing is formed by an outlet nozzle in which the pipe nozzle of the ring lies at least in part.
  • the invention preferably provides that a connector is inserted into the free end of the outlet nozzle, which connector contacts the inner wall of the outlet nozzle with a first axial section and contacts the inner wall of the pipe nozzle of the ring with a second axial section, which has a smaller cross-section than the first section.
  • this pipe socket By contacting the inner wall of the pipe socket of the ring, it is further achieved that this pipe socket is expanded from the inside and thus the outer wall of this pipe socket is pressed tightly against the inner wall of the outlet socket of the pump housing.
  • the connector has a connection piece at its free end to which subsequent components can be connected.
  • the ring forming the chamber wall has fastening elements at its two axial ends with which the ring can be fastened in the pump housing.
  • a respective fastening element is preferably designed as an annular material thickening (in particular in comparison to the other wall regions between the two axial ends), which lies in a respective annular recess in the pump housing, in particular in a force-fitting manner, preferably which is glued in the recess or to an edge region of the recess.
  • the pump housing is designed in several parts, preferably in two parts, and comprises at least a lower housing pot and an upper housing cover.
  • the preferred implementation of this fastening design provides for an annular groove in the housing cup and an annular groove in the housing cover.
  • the attached chamber wall then extends between these two annular recesses, in particular with the axially end-side material thickenings being located in a respective associated groove.
  • the lower housing pot preferably surrounds the majority of the rotor in the axial direction, in particular it completely surrounds the part of the rotor located below the blades of the rotor. Further preferably, an axially lower portion of the blades, in particular precisely the lower half of the blades, is surrounded by the housing pot.
  • the housing cover surrounds an axially upper portion of the blades of the rotor, in particular an upper half.
  • the housing cover and the housing pot each have the outlet, in particular the outlet nozzle of the pump housing, in part areas, in particular in half.
  • the housing pot and the housing cover are connected to one another in a connecting plane perpendicular to the axis of rotation, wherein the connecting plane intersects the chamber wall, preferably between the material thickenings, and/or axially centrally.
  • Figure 1 shows an exploded view and Figure 2 shows a sectional view of a pump housing 1 and a pump constructed therewith, in particular a blood pump, according to the invention, wherein the pump housing 1 comprises a lower pump chamber 1a and an upper pump cover 1b.
  • a rotor 2 is arranged in the pump chamber 1c of the pump housing 1 and is mounted for rotation about the axis of rotation 3.
  • the rotor 2 is preferably supported by contact on a spherical surface of a bearing ball 2b arranged in the pump chamber 1a, against which the rotor 2 is supported, here preferably on the underside and on the side of the rotor 2 facing away from the inlet 4.
  • the embodiment of the invention is not limited to the type of bearing shown, since the bearing of the rotor 2 is fundamentally irrelevant to the invention.
  • Other types of bearing are also possible, e.g., on a shaft or purely hydrodynamically.
  • the rotor 2 carries on its upper side, opposite the pump cover 1b, several blades 2a, with which, upon rotation of the rotor 2, a fluid to be pumped is conveyed from the inlet 4 through the outlet chamber 5 to the outlet 6.
  • Inlet 4 and outlet 6 are preferably formed as nozzles on the pump housing 1.
  • the blades 2a can also be covered by a cover (not provided here) which has an upper passage, preferably one that is aligned with the inlet 4.
  • the figures show the pump housing 1 of a pump preferably designed as a blood pump.
  • the rotor 2 is contact-mounted in the pump housing 1 and is additionally magnetically mounted, but in particular, is magnetically driven.
  • Magnetically acting elements provided for the magnetic drive in the rotor 2 are designed in its interior, for example, as permanent magnets 2c, which interact with a rotating magnetic field of the drive 20 acting from outside the pump housing 1.
  • the drive 20 preferably has a housing in which a drive disk 20b is set in rotation by an electrically operated motor 20a, into which drive magnets 20c (e.g.
  • Permanent magnets are integrated, so that the rotating drive disk 20b generates a rotating magnetic field that acts on the permanent magnets 2c of the rotor 2, in particular to drive it, preferably with tilting moments around the contact-based bearing on the ball 2b being absorbed.
  • the speed of the motor 20a is controlled/regulated via the power supply and/or signal supply 20d.
  • the rotor 2 preferably has a central bore, in particular one that is open around the contact-based bearing on the ball 2b, so that blood can also circulate around the rotor 2 through the bore.
  • This can be provided, for example, to prevent stagnation in the lower gap and/or to form a hydrodynamic bearing function and/or to dissipate heat from the contact-based bearing.
  • the central bore shown here is not essential to the invention and can also be omitted in other embodiments.
  • a fluid chamber 7 is arranged radially outside around the outlet chamber 5.
  • the outlet chamber 5, which is a partial area of the pump chamber 1c, and the fluid chamber 7 are separated by a chamber wall 8, which is designed as a ring closed by a full 360 degrees around the rotation axis 3, on which a pipe socket 8a is arranged, which is preferably oriented at least substantially tangentially to the chamber wall 8 and in whose inner surface opens, i.e. is in fluid communication with the pump chamber 1c.
  • fastening elements 8b designed as material thickenings (particularly with a square cross-section), which are adhesively secured in respective annular recesses 9 in the pump housing 1a and pump cover 1b with an adhesive seam 12.
  • material thickenings are shown enlarged in detail A of Figure 2. They preferably have a square cross-section.
  • FIG. 2 The detail enlargement A of the sectional view of Figure 2 further shows that the pump pot 1a and the pump cover 1b are connected in a connecting plane E, e.g. materially bonded, which intersects the annular chamber wall 8, in this embodiment preferably centrally or at least between the fastening elements 8b.
  • a connecting plane E e.g. materially bonded
  • the chamber wall can preferably be straight between the fastening elements 8b or have another predefined shape.
  • a control device 30 is preferably provided, in particular one comprising a pumping device 31, which here is implemented as a piston syringe, the piston of which is actuated by a drive.
  • the control device 30, in particular the pumping device 31 or the internal volume of the piston syringe, is connected via the connecting hose 32. connected to the fluid chamber 7 so that fluid can be injected into the fluid chamber 7 or removed from it.
  • the pipe socket 8a is located in the outlet 6 of the pump housing 1 and is sealed to it by a connector 11.
  • the mounted position of the connector 11 is shown in Figures 3 and 4.
  • Figures 3 and 4 further illustrate the function of the invention.
  • the fluid chamber 7 is at least partially filled with fluid, with the chamber wall 8 between the fastening elements 8b assuming an at least substantially rectilinear extension or only slightly bulged/convex extension toward the radially outer wall of the fluid chamber 7, or only slightly concave toward the rotor 2.
  • the chamber wall 8 By pumping fluid into the fluid chamber 7, the chamber wall 8 can be caused to bulge in the direction of the rotor 2, whereby the cross section of the outlet chamber 5 is reduced.
  • Figure 4 shows a situation in which, compared to Figure 3, the fluid has been pumped out of the fluid chamber 7, in particular completely.
  • Figure 4 shows a retracted position of the piston of the syringe.
  • the chamber wall 8 is thereby displaced such that it is concave toward the rotor, in particular maximally concave, and in particular is in contact with the radially outer wall of the fluid chamber 7.
  • the cross-section of the outlet chamber 5 is maximally enlarged.
  • the geometry of the chamber wall 8 and thereby the cross-section of the outlet chamber 5 can be changed, whereby the pump housing 1 can be geometrically adapted to different operating points.
  • Figure 5 shows a change in the chamber wall compared to Figure 3, with otherwise identical construction.
  • This is preferably made of an elastomer, e.g. silicone, whereby the chamber wall is movable/stretchable within its elasticity.
  • the chamber wall 8 is formed by a film, e.g., made of plastic or metal. Between the fastening elements 8b, the chamber wall 8 is formed with an oversize, in particular, which means that the axial length of the film/chamber wall 8 is greater than the axial distance between the fastening elements 8b. This allows the film/chamber wall to move into or out of the fluid chamber 7 between the fastening elements 8b, in particular, with the film/chamber wall 8 lying between two extreme layers, e.g., folded or without a defined extension.

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Anesthesiology (AREA)
  • Cardiology (AREA)
  • Mechanical Engineering (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Medical Informatics (AREA)
  • External Artificial Organs (AREA)

Abstract

L'invention concerne un boîtier de pompe (1), en particulier d'une pompe d'assistance circulatoire, comprenant une chambre de pompe (1c) dans laquelle est agencé un rotor (2) qui peut tourner autour d'un axe de rotation (3) et au moyen duquel un fluide peut être transporté d'une entrée (4) du boîtier de pompe (1) à une sortie (6) du boîtier de pompe (1), la chambre de pompe (1c) comprenant une chambre de sortie (5) qui est disposée dans une région radialement à l'extérieur autour du rotor (2) et qui s'ouvre dans la sortie (6), une chambre de fluide (7) étant disposée radialement à l'extérieur autour de la chambre de sortie (5) et étant séparée de la chambre de sortie (5) par une paroi de chambre (8) qui est mobile au moins dans des régions. L'invention concerne également une pompe comprenant un tel boîtier de pompe (1) et un entraînement au moyen duquel le rotor (2) peut être entraîné dans le boîtier de pompe (1), de préférence le rotor (2) étant entraîné par l'entraînement à travers une paroi du boîtier de pompe (1) au moyen d'une interaction magnétique.
PCT/EP2025/052285 2024-01-31 2025-01-29 Boîtier de pompe et pompe Pending WO2025163009A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102024102725.8 2024-01-31
DE102024102725.8A DE102024102725A1 (de) 2024-01-31 2024-01-31 Pumpengehäuse und Pumpe

Publications (1)

Publication Number Publication Date
WO2025163009A1 true WO2025163009A1 (fr) 2025-08-07

Family

ID=94432645

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2025/052285 Pending WO2025163009A1 (fr) 2024-01-31 2025-01-29 Boîtier de pompe et pompe

Country Status (2)

Country Link
DE (1) DE102024102725A1 (fr)
WO (1) WO2025163009A1 (fr)

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AT404318B (de) * 1996-07-29 1998-10-27 Heinrich Dr Schima Zentrifugalpumpe bestehend aus einem pumpenkopf und einem scheibenläuferantrieb zur förderung von blut und anderen scherempfindlichen flüssigkeiten
US6431823B1 (en) * 2000-07-13 2002-08-13 Yudko Slepoy Centrifugal pump with variable capacity and pressure
EP2532897A4 (fr) * 2010-02-02 2015-05-27 Mitsubishi Heavy Ind Ltd Pompe centrifuge

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