EP0094379B1 - Pompe rotative propulsant des matières gazéiformes et liquides, spécialement pour l'emploi par propulsion dans des pompes à membrane pour le sang - Google Patents

Pompe rotative propulsant des matières gazéiformes et liquides, spécialement pour l'emploi par propulsion dans des pompes à membrane pour le sang Download PDF

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Publication number
EP0094379B1
EP0094379B1 EP83890083A EP83890083A EP0094379B1 EP 0094379 B1 EP0094379 B1 EP 0094379B1 EP 83890083 A EP83890083 A EP 83890083A EP 83890083 A EP83890083 A EP 83890083A EP 0094379 B1 EP0094379 B1 EP 0094379B1
Authority
EP
European Patent Office
Prior art keywords
piston
orifices
overflow
pump
casing
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.)
Expired
Application number
EP83890083A
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German (de)
English (en)
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EP0094379A1 (fr
Inventor
Walter Mag.Rer.Nat. Schwab
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Individual
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Individual
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Filing date
Publication date
Priority claimed from AT185782A external-priority patent/AT376885B/de
Priority claimed from AT17183A external-priority patent/AT376887B/de
Application filed by Individual filed Critical Individual
Publication of EP0094379A1 publication Critical patent/EP0094379A1/fr
Application granted granted Critical
Publication of EP0094379B1 publication Critical patent/EP0094379B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/22—Rotary-piston machines or pumps of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/10—Fluid working
    • F04C2210/1016—Blood
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S128/00—Surgery
    • Y10S128/03—Heart-lung

Definitions

  • the invention relates to a rotary pump for driving diaphragm blood pumps and for the conveyance of gaseous and liquid substances, in the manner of a trochoidal rotary piston pump, which with a 2: 3 ratio with a two-armed trochoidal jacket raceway and a triangular piston rotating on an eccentric of an eccentric shaft, with its Corners with the jacket raceway is in constant sliding contact.
  • the invention relates to rotary pumps which, because of their small external dimensions, can be used wherever minimal space requirement of these pumps is a functional necessity or makes this appear desirable.
  • these pumps can be used as pneumatic gas pumps or as hydraulic liquid pumps for driving diaphragm blood pumps and their special forms such as B. peristaltic pump, the pulsation pump or the peristaltic pump can be used.
  • rotary pumps are generally used in technology, but especially in the field of cardiac technology as pneumatic or hydraulic rotary pumps.
  • the invention relates to the position of the suction or exhaust openings.
  • Rotary pumps and compressors have become known from AT-B-355 177, AT-B-351 137, DE-A-2 402 084, DE-A-2 242 247 and DE-A-2 021 513, where the inlets are described as both peripheral and side inlets.
  • Neither of these rotary machines describes a pump or a compressor, where the respective inlet is used alternately at the same time as a suction or discharge opening despite continuous rotation of the piston and maintaining the direction of rotation of the piston, the direction of rotation being irrelevant, as disclosed by the subject matter of this invention .
  • a rotary piston machine working in the manner of a trochoidal rotary piston machine has also become known (DE-A-2 819 851) which, in the sense of the publication “Classification of the rotary piston machine ” by F. Wankel, is a trochoidal rotary piston machine with a 2: 3 or one that has been known for a long time 1: 2 translation in slip intervention with outer stationary working space wall and external sealing parts.
  • This blood pump referred to as the “artificial heart”, is to be driven by an electric motor located outside the pump housing.
  • this heart pump should not be used as a high-speed compressor or motor, but rather as a slow-running heart pump that pumps the blood directly, so that the blood comes into direct contact with the internal parts of the pump.
  • the pump according to the invention works as a secondary pump in that a diaphragm (blood) pump is driven hydraulically or pneumatically, as a result of which the blood does not come into direct contact with the inner parts of the rotary pump.
  • An object of the invention is to avoid these disadvantages.
  • the solution to the problem according to the invention lies in the fact that in a rotary pump of the type mentioned at the beginning, two suction or ejection channels, which run through the housing jacket and open into the jacket raceway, are provided, the mouth openings of which each have an overflow pocket, which are recesses over an equally large section extend in the same direction, with the position and dimension of the orifices with overflow pockets being determined so that - viewed in the radial section of the pump - the control edges of the two orifices with overflow pockets, which are in the direction of rotation of the piston, coincide with one of the two simultaneous points of the two-armed trochoids of the jacket raceway , while the position of the rear control edges of the two orifices with overflow pockets in the direction of rotation of the piston is determined such that, for example when the piston is in a dead center position, the leading piston corner immediately r lies above the front control edge of one of the two orifices, while the trailing piston corner lies directly above the rear control edge of the other orifice
  • each mouth opening with overflow pockets completely or partially interrupts the trochoidal jacket raceway in width.
  • each mouth opening with overflow pocket is additionally recessed in a known manner in the region of the housing shell in at least one side wall in the form of an overflow pocket.
  • the rotary pump according to the invention has a housing which consists of a housing jacket 1 with a trochoidal jacket raceway 2 and two side walls, of which only the one designated by 4 is visible in the drawing.
  • a triangular piston 5 rotates on an eccentric 6, the shaft of which is designated 7 and which passes through the side parts.
  • sealing parts which consist of sealing strips 8 and sealing bolts 9. Furthermore, sealing strips 10 are provided on the lateral piston edges, their ends abutting the sealing bolts 9. With the sealing strips 8, the piston 5 is in constant sliding engagement with the jacket raceway 2.
  • the movement of the piston 5 is controlled by the gear transmission 11.
  • the drawing further shows that two suction or exhaust channels running through the housing jacket 1 and opening into the jacket raceway 2 are provided, the mouth openings 12, 12 'of which each have an overflow pocket 120 or 120', which are each in the same size as recesses Extend section (arc) of the casing raceway 2 in the same direction, the position and dimension of the orifices 12, 12 'with overflow pockets 120, 120' being determined such that - viewed in the radial section of the pump - the control edges 16 at the front in the direction of rotation 13 of the piston 5, 16 'of the two orifices 12, 12' with overflow pockets 120, 120 'each with one of the two simultaneous points D i , D, the two-arched trochoids of the outer raceway 2 coincide, while the position of the control edges 14, 14' which are at the rear in the direction of rotation 13 of the piston 5 of the two orifices 12, 12 'with overflow pockets 120, 120' is determined such that, for example, when the piston 5 is in the dead center position
  • the drive unit consisting of an electric motor or an electric motor with a gearbox, is usually accommodated outside the rotary pump, and the drive takes place via the eccentric shaft 7.
  • the rotary pump according to the invention is designed for a portable drive unit outside of a human or animal body or is even implanted in a human or animal body, it makes more sense due to the small construction volume if the electric motor including the gearbox is housed inside the piston 5, which is energy-efficient is possible because the pump power of an implanted membrane blood pump requires a few watts of power.
  • the electric motor can also be accommodated inside the piston and the gear outside the pump, or the gear inside the piston and the electric motor outside the pump.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • External Artificial Organs (AREA)

Claims (3)

1. Pompe à rotation pour l'actionnement des pompes de sang à membrane et pour le refoulement des matières gazéiformes et liquides, du genre d'une pompe à piston tournant en trochoide qui, travaillant à un rapport de 2:3, présente une voie de glissement en forme d'une trochoide à deux arcs (2), dans l'enveloppe, et un piston triangulaire (5) tournant autour d'un excentrique (6) monté sur un arbre d'excentrique (7), dont les coins sont en contact permanent et glissant avec la voie de glissement de l'enveloppe (2), caractérisée en ce que deux conduites d'aspiration et de refoulement sont prévues, traversant l'enveloppe (1) et débouchant dans la voie de glissement de l'enveloppe (2), dont les orifices (12, 12') présentent des poches de débordement (120, 120') respectives s'étendant, en forme de creux, sur des ségments respectifs de la voie de glissement de l'enveloppe (2), du même étendu et du même sens, la position et la dimension des orifices (12, 12') avec poches de débordement (120, 120') étant fixées de façon que, vu en coupe radiale, les bords de réglage avant (16,16') - au sens de rotation (13) du piston (5) - des deux orifices (12, 12') avec poches de débordement (120, 120') coincident avec les points simultanés (Di, Dz) respectifs de la trochoide à deux arcs de la voie de glissement de l'enveloppe (2), et la position des bords de réglage arrière (14,14') - au sens de rotation (13) du piston (5) - des deux orifices (12, 12') avec poches de débordement (120, 120') étant fixée de façon que, par ex. pour la position au point mort du piston (5), le coin de piston avant (17) par rapport à l'une des chambres (A) se trouve directement sur le bord de réglage avant (16') de l'un des orifices (12') et le coin de piston arrière (15) - par rapport à la même chambre (A) - se trouve directement sur le bord de réglage arrière (14) de l'autre orifice (12).
2. Pompe à rotation selon la revendication 1, caractérisée en ce que chaque orifice (12, 12') avec poche de débordement (120, 120') interromp la voie de glissement de l'enveloppe (2) en forme de trochoide sur toute sa largeur ou partiellement.
3. Pompe à rotation selon la revendication 1 ou 2, caractérisée en ce que chaque orifice (12, 12') avec poche de débordement (120, 120') est foncé supplémentairement dans au moins une paroi latérale (3, 4), dans la portée de l'enveloppe (1), de la façon connue, en forme d'une poche de débordement.
EP83890083A 1982-05-12 1983-05-11 Pompe rotative propulsant des matières gazéiformes et liquides, spécialement pour l'emploi par propulsion dans des pompes à membrane pour le sang Expired EP0094379B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT1857/82 1982-05-12
AT185782A AT376885B (de) 1982-05-12 1982-05-12 Rotationspumpe zur foerderung gasfoermiger und fluessiger stoffe, insbesondere zur verwendung als blut- und herzpumpe sowie kuenstliches herz
AT170/83 1983-01-20
AT17183A AT376887B (de) 1983-01-20 1983-01-20 Rotationspumpe zur verwendung als blut- und herzpumpe

Publications (2)

Publication Number Publication Date
EP0094379A1 EP0094379A1 (fr) 1983-11-16
EP0094379B1 true EP0094379B1 (fr) 1987-01-28

Family

ID=25591722

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83890083A Expired EP0094379B1 (fr) 1982-05-12 1983-05-11 Pompe rotative propulsant des matières gazéiformes et liquides, spécialement pour l'emploi par propulsion dans des pompes à membrane pour le sang

Country Status (4)

Country Link
US (1) US4594060A (fr)
EP (1) EP0094379B1 (fr)
CA (1) CA1207189A (fr)
DE (1) DE3317223A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2844312A1 (fr) 2002-09-05 2004-03-12 Centre Nat Rech Scient Machine tournante a capsulisme

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5145333A (en) * 1990-03-01 1992-09-08 The Cleveland Clinic Foundation Fluid motor driven blood pump
DE19542265C2 (de) * 1995-11-13 1998-07-09 Luk Automobiltech Gmbh & Co Kg Förderpumpe
US6941103B2 (en) * 2002-10-21 2005-09-06 Eastman Kodak Company Release agent management system with anilox roller
AU2003303781A1 (en) * 2003-01-24 2004-08-13 Shimano Inc. Method of manufacturing fishing rod
US6926505B2 (en) * 2003-07-23 2005-08-09 Joaseph A. Sbarounis Rotary machine housing with radially mounted sliding vanes
DE102005052623B4 (de) * 2005-11-02 2007-10-11 Seleon Gmbh Kompressor
US10087758B2 (en) 2013-06-05 2018-10-02 Rotoliptic Technologies Incorporated Rotary machine
KR102195233B1 (ko) 2017-04-07 2020-12-28 스택폴 인터내셔널 엔지니어드 프로덕츠, 엘티디. 에피트로코이드 진공 펌프
EP3850189A4 (fr) 2018-09-11 2022-06-15 Rotoliptic Technologies Incorporated Étanchéité dans des machines rotatives trochoïdales hélicoïdales
US11815094B2 (en) 2020-03-10 2023-11-14 Rotoliptic Technologies Incorporated Fixed-eccentricity helical trochoidal rotary machines
US11802558B2 (en) 2020-12-30 2023-10-31 Rotoliptic Technologies Incorporated Axial load in helical trochoidal rotary machines

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US807421A (en) * 1904-06-07 1905-12-12 Adam S Dickison Rotary engine.
GB583035A (en) * 1943-08-20 1946-12-05 Bernard Maillard A rotary machine generating variable volumes
US3374750A (en) * 1966-07-28 1968-03-26 Yarway Corp Pump
DE2021513A1 (de) * 1970-05-02 1971-11-25 Egon Schultheis Rotationskolbenpumpe
BE790672A (fr) * 1971-10-29 1973-04-27 Copeland Corp Compresseur a chambres rotatives
DE2242247A1 (de) * 1972-08-28 1974-03-07 Egon Schultheis Rotationskolbenpumpe
DE2402084A1 (de) * 1974-01-17 1975-07-24 Borsig Gmbh Lage der ein- und auslasskanaele in einem rotationskolbenverdichter
DE2700522A1 (de) * 1977-01-07 1978-07-13 Borsig Gmbh Gekapselter rotationskolbenkompressor, insbesondere kaeltekompressor
DE2700731C2 (de) * 1977-01-10 1985-04-18 Borsig Gmbh Rotationskolbenverdichter
FR2389382B1 (fr) * 1977-05-06 1982-07-09 Anvar
DE2743038C2 (de) * 1977-09-24 1986-01-09 Borsig Gmbh Rotationskolbenverdichter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2844312A1 (fr) 2002-09-05 2004-03-12 Centre Nat Rech Scient Machine tournante a capsulisme

Also Published As

Publication number Publication date
EP0094379A1 (fr) 1983-11-16
DE3317223C2 (fr) 1988-08-25
DE3317223A1 (de) 1983-12-22
US4594060A (en) 1986-06-10
CA1207189A (fr) 1986-07-08

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