EP0570259B1 - Peristaltic pump with an elastic external stator support - Google Patents

Peristaltic pump with an elastic external stator support Download PDF

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Publication number
EP0570259B1
EP0570259B1 EP19930401160 EP93401160A EP0570259B1 EP 0570259 B1 EP0570259 B1 EP 0570259B1 EP 19930401160 EP19930401160 EP 19930401160 EP 93401160 A EP93401160 A EP 93401160A EP 0570259 B1 EP0570259 B1 EP 0570259B1
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EP
European Patent Office
Prior art keywords
peristaltic pump
output shaft
satellite
rotor
casing
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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 - Lifetime
Application number
EP19930401160
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German (de)
French (fr)
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EP0570259A1 (en
Inventor
Jean-Pierre Debourg
Denis Daulasim
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SEB SA
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SEB SA
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Publication date
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Publication of EP0570259A1 publication Critical patent/EP0570259A1/en
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Publication of EP0570259B1 publication Critical patent/EP0570259B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
    • F04B43/1284—Means for pushing the backing-plate against the tubular flexible member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1238—Machines, pumps, or pumping installations having flexible working members having peristaltic action using only one roller as the squeezing element, the roller moving on an arc of a circle during squeezing

Definitions

  • the invention relates to a peristaltic pump with elastic support outside the stator.
  • peristaltic pumping is based on the propagation of the pinch of a tube filled with a fluid.
  • the fluid downstream of the pinch is expelled in the direction of flow, while the upstream tube decompressing creates a vacuum which sucks fluid into a reservoir located even further upstream.
  • peristaltic pumps are known in which a rotor applies rollers to a pipe which is crushed on the inner periphery of a cylindrical stator, thus generating the phenomenon described above.
  • the difficulty in producing this type of pump stems from the need to ensure that the tube is crushed in order to generate fluid pressure at the outlet without damaging the pipe.
  • the object of the present invention is to provide a miniature peristaltic pump whose elastic compensating system is external to the stator.
  • a peristaltic pump comprising an electric motor having a bearing and an output shaft in rotation about an axis of rotation; a pump body fixedly mounted on the bearing; a cylindrical housing acting as an axis of symmetry stator parallel to the output shaft; a rotor mounted fixed on and driven in rotation by the output shaft inside the cylindrical housing, a satellite of the rotor driven in rotation inside the housing a flexible tube lining the internal side wall of the housing and compressed between said satellite and side wall; the distance between the axis of rotation and the distal end of the satellite rotor arrangement added to the thickness of the compressed tube is greater than the radius of the housing cylindrical, the cylindrical housing being resiliently mounted on the pump body by means of external elastic elements.
  • the peristaltic pump comprises an electric motor 1, preferably, but not exclusively, of the asynchronous ring type, having a bearing 2 and an output shaft 4a in rotation about an axis of rotation 4b.
  • the bearing 2 carries a pump body 3 fixedly mounted comprising a ring 13 centered on the axis 4b of the output shaft 4a and having two diametrically opposite bosses or supports 14 which allow it to be screwed onto the bearing 2 by means of screws 15.
  • On this crown 13 is elastically mounted a cylindrical housing 8 by means of flexible blades 12 regularly distributed.
  • the box of axis of symmetry 5 comprises a base 16 pierced with a circular opening 17 allowing the passage of the output shaft 4a, a side wall 18 and a cover 19 intended to cooperate with the open base of the box 16 and having a circular opening 20 opposite the opening 17 of the base 16 allowing the passage of the shaft 4a.
  • the openings 17 and 20 are such that they allow, using the flexible blades, a translational movement of the housing 8 in any radial direction, the axis of symmetry 5 of the housing 8 remaining parallel and offset with respect to the axis of rotation 4b of the output shaft.
  • the side wall 18 of the cylindrical housing 8 is lined with a tube 11 conveying the fluid to be pumped.
  • the exits of the tube 11 out of the housing can be done respectively by the base 16 and by the cover 19, as shown in FIGS. 5 and 6, but in the preferred embodiment (FIGS. 7,8) the exits are made by the side wall 18 of the housing 8, the crown 13 being partially interrupted to allow passage to the outlets (11a, 11b) of the pipe.
  • Fixed on the output shaft and inside the housing is a rotor 6 (figures 1,2) or 7 ( Figures 3,4) respectively driving a satellite 9 ( Figures 1,2) or 10 ( Figures 3,4) intended to crush the tube 11 against the side wall 18.
  • the rotor 6 is a notched main roller linked to the output shaft 4a and the satellite 9 is a notched secondary roller rolling around the main roller 6.
  • the rotor 7 is a crank pin connected to the output shaft 4a having a groove 7a and the satellite 10 is a roller cooperating with the groove 7a and driven by the crank pin.
  • the sum of the radius of the rotor 6 ( Figure 1) or the distance from the axis of rotation 4b to the groove 7a ( Figure 3), the diameter of the satellite 9 or 10 and the thickness of the compressed pipe 11 is greater as the radius of the inner wall 18, which causes the eccentricity of the housing 8 of axis of symmetry 5 relative to the axis of rotation 4b, the axis of symmetry 5 always remaining parallel to the axis 4b but offset from it in the direction of the satellite.
  • the compression force of the pipe 11 is obtained by the action of the flexible blades 12 urged by the eccentricity of the housing 8.
  • the operating mode of the pump thus described is as follows: the electric motor 1 drives the rotor 6 or 7 which itself drives the satellite 9 or 10 compressing the tube 11 against the side wall 18. The movement of the satellite therefore generates the propagation of this compression causing the peristaltic phenomenon described above.
  • satellite 9 or 10 arrives opposite the outputs of tube a cycle has been completed. That is to say that all the fluid inside the tube present in the case was pulsed towards the exit and the depression relative to the decompression of the tube upstream of the satellite sucked fluid inside the tube replacing the expelled fluid.
  • rotor-satellite assembly can be replaced by a single eccentric cylindrical roller linked to the output shaft.

Description

L'invention concerne une pompe péristaltique à support élastique extérieur au stator.The invention relates to a peristaltic pump with elastic support outside the stator.

Le principe de pompage péristaltique repose sur la propagation du pincement d'un tube rempli d'un fluide. Le fluide en aval du pincement est chassé dans le sens de l'écoulement, tandis que le tube amont se décompressant crée une dépression qui aspire du fluide dans un réservoir situé encore plus en amont.The principle of peristaltic pumping is based on the propagation of the pinch of a tube filled with a fluid. The fluid downstream of the pinch is expelled in the direction of flow, while the upstream tube decompressing creates a vacuum which sucks fluid into a reservoir located even further upstream.

On connaît par exemple de FR-A-2 307 990 des pompes péristaltiques dans lesquelles un rotor applique des galets sur un tuyau qui s'écrase sur la périphérie intérieure d'un stator cylindrique, générant ainsi le phénomène décrit plus haut. La difficulté de réalisation de ce type de pompe provient de la nécessité d'assurer l'écrasement du tube pour générer une pression du fluide à la sortie sans pour autant détériorer le tuyau.For example, from FR-A-2 307 990, peristaltic pumps are known in which a rotor applies rollers to a pipe which is crushed on the inner periphery of a cylindrical stator, thus generating the phenomenon described above. The difficulty in producing this type of pump stems from the need to ensure that the tube is crushed in order to generate fluid pressure at the outlet without damaging the pipe.

Il existe des pompes doseuses péristaltiques où le compromis écrasement/dégradation est optimal du fait de la précision extrême des pièces mécaniques, et des dimensions et des caractéristiques mécaniques du tuyau. Ce type de pompe est fabriqué à l'unité avec le coût que cela engendre et est destiné à des applications pharmacologiques ou hématologiques nécessitant une grande précision.There are peristaltic dosing pumps where the crushing / degradation compromise is optimal due to the extreme precision of the mechanical parts, and the dimensions and mechanical characteristics of the pipe. This type of pump is manufactured individually with the cost that this generates and is intended for pharmacological or hematological applications requiring high precision.

Pour des utilisations moins sensibles, il existe des pompes dont les galets portés par le rotor sont montés sur un support élastique qui compense les petites imperfections des pièces mécaniques de la pompe comme par exemple un léger désaxage du rotor par rapport à sa position idéale dû à la méthode de fabrication en série ou à l'usure des pièces ou encore, un diamètre de tuyau non constant. Il existe un système de pompe à galet unique désaxé présentant des éléments élastiques remplissant la même fonction que pour les pompes précédentes.For less sensitive uses, there are pumps whose rollers carried by the rotor are mounted on an elastic support which compensates for the small imperfections of the mechanical parts of the pump such as for example a slight misalignment of the rotor with respect to its ideal position due to the method of mass production or wear of the parts, or a non-constant pipe diameter. There is a single offset roller pump system with elastic elements fulfilling the same function as for the previous pumps.

Toutes les pompes présentées jusque là sont difficiles ou coûteuses à miniaturiser et conduisent, pour de petites pompes, à des réalisations de précision incompatibles avec des productions économiques de grande série. Cette difficulté et ce coût proviennent essentiellement du fait que le système compensateur élastique, optimisant le compromis écrasement/dégradation malgré les imperfections mécaniques, est situé à l'intérieur du stator.All the pumps presented so far are difficult or expensive to miniaturize and lead, for small pumps, to precision embodiments incompatible with economical mass production. This difficulty and this cost come essentially from the fact that the elastic compensating system, optimizing the crushing / degradation compromise despite the mechanical imperfections, is located inside the stator.

Le but de la présente invention est de fournir une pompe péristaltique miniature dont le système compensateur élastique est extérieur au stator.The object of the present invention is to provide a miniature peristaltic pump whose elastic compensating system is external to the stator.

A cet effet, il est-proposé une pompe péristaltique comprenant un moteur électrique ayant un palier et un arbre de sortie en rotation autour d'un axe de rotation ; un corps de pompe monté fixe sur le palier ; un boîtier cylindrique faisant office de stator d'axe de symétrie parallèle à l'arbre de sortie ; un rotor monté fixe sur et entraîné en rotation par l'arbre de sortie à l'intérieur du boîtier cylindrique, un satellite du rotor entraîné en rotation à l'intérieur du boîtier un tube souple tapissant la paroi latérale interne du boîtier et comprimé entre ledit satellite et la paroi latérale ; la distance entre l'axe de rotation et l'extrémité distale de l'agencement rotor satellite additionnée à l'epaisseur du tube comprimé est supérieure au rayon du boitier cylindrique, le boîtier cylindrique étant monté élastiquement sur le corps de pompe par l'intermédiaire d'éléments élastiques extérieurs.For this purpose, there is proposed a peristaltic pump comprising an electric motor having a bearing and an output shaft in rotation about an axis of rotation; a pump body fixedly mounted on the bearing; a cylindrical housing acting as an axis of symmetry stator parallel to the output shaft; a rotor mounted fixed on and driven in rotation by the output shaft inside the cylindrical housing, a satellite of the rotor driven in rotation inside the housing a flexible tube lining the internal side wall of the housing and compressed between said satellite and side wall; the distance between the axis of rotation and the distal end of the satellite rotor arrangement added to the thickness of the compressed tube is greater than the radius of the housing cylindrical, the cylindrical housing being resiliently mounted on the pump body by means of external elastic elements.

L'avantage de la situation extérieure des éléments élastiques est essentiellement qu'il ne nécessite pas de montage de précision à l'intérieur du boitier.The advantage of the external situation of the elastic elements is essentially that it does not require precision mounting inside the housing.

Les autres caractéristiques de l'invention résulteront de la description qui suit en référence aux dessins annexés dans lesquels :

  • La figure 1 est une vue schématique en coupe d'une pompe correspondant à une forme de réalisation de l'invention.
  • La figure 2 est une vue extérieure de côté de la pompe de la figure 1 sans le couvercle.
  • La figure 3 est une vue schématique en coupe d'une pompe selon une autre forme de réalisation de l'invention.
  • La figure 4 est une vue extérieure de côté de la pompe de la figure 3 sans le couvercle.
  • Les figures 5 et 6 sont des vues schématiques extérieures et en coupe de l'agencement du tuyau à l'intérieur du boîtier selon une forme de réalisation de l'invention.
  • Les figures 7 et 8 sont des vues schématiques extérieures et en coupe selon la forme préférée de réalisation de l'agencement du tuyau et de ses sorties du boîtier.
The other characteristics of the invention will result from the following description with reference to the accompanying drawings in which:
  • Figure 1 is a schematic sectional view of a pump corresponding to an embodiment of the invention.
  • Figure 2 is an exterior side view of the pump of Figure 1 without the cover.
  • Figure 3 is a schematic sectional view of a pump according to another embodiment of the invention.
  • Figure 4 is an exterior side view of the pump of Figure 3 without the cover.
  • Figures 5 and 6 are schematic exterior and sectional views of the arrangement of the pipe inside the housing according to an embodiment of the invention.
  • Figures 7 and 8 are schematic exterior views and in section according to the preferred form of realization of the arrangement of the pipe and its outputs from the housing.

La pompe péristaltique comprend un moteur électrique 1, de préférence, mais pas exclusivement, du type asynchrone à bague, ayant un palier 2 et un arbre de sortie 4a en rotation autour d'un axe de rotation 4b. Le palier 2 porte un corps de pompe 3 monté fixe comprenant une couronne 13 centrée sur l'axe 4b de l'arbre de sortie 4a et présentant deux bossages ou supports 14 diamétralement opposés qui permettent de la visser sur le palier 2 au moyen de vis 15. Sur cette couronne 13 est monté élastiquement un boitier cylindrique 8 par l'intermédiaire de lames flexibles 12 régulièrement réparties. Le boitier d'axe de symétrie 5 comprend une base 16 percée d'une ouverture circulaire 17 permettant le passage de l'arbre de sortie 4a, une paroi latérale 18 et un couvercle 19 destiné à coopérer avec la base ouverte du boîtier 16 et présentant une ouverture circulaire 20 en regard de l'ouverture 17 de la base 16 permettant le passage de l'arbre 4a. Les ouvertures 17 et 20 sont telles qu'elles autorisent à l'aide des lames flexibles un mouvement de translation du boitier 8 dans n'importe quelle direction radiale, l'axe de symétrie 5 du boitier 8 restant parallèle et décalé par rapport à l'axe de rotation 4b de l'arbre de sortie. La paroi latérale 18 du boîtier cylindrique 8 est tapissée par un tube 11 véhiculant le fluide à pomper. Les sorties du tube 11 hors du boitier peuvent se faire respectivement par la base 16 et par le couvercle 19, comme représenté figures 5 et 6, mais dans la forme préférée de réalisation (figures 7,8) les sorties se font par la paroi latérale 18 du boitier 8, la couronne 13 étant partiellement interrrompue pour laisser le passage aux sorties (11a, 11b) du tuyau. Sur l'arbre de sortie et à l'intérieur du boitier est monté fixe un rotor 6 (figures 1,2) ou 7 (figures 3,4) entraînant respectivement un satellite 9 (figures 1,2) ou 10 (figures 3,4) destiné à écraser le tube 11 contre la paroi latérale 18.The peristaltic pump comprises an electric motor 1, preferably, but not exclusively, of the asynchronous ring type, having a bearing 2 and an output shaft 4a in rotation about an axis of rotation 4b. The bearing 2 carries a pump body 3 fixedly mounted comprising a ring 13 centered on the axis 4b of the output shaft 4a and having two diametrically opposite bosses or supports 14 which allow it to be screwed onto the bearing 2 by means of screws 15. On this crown 13 is elastically mounted a cylindrical housing 8 by means of flexible blades 12 regularly distributed. The box of axis of symmetry 5 comprises a base 16 pierced with a circular opening 17 allowing the passage of the output shaft 4a, a side wall 18 and a cover 19 intended to cooperate with the open base of the box 16 and having a circular opening 20 opposite the opening 17 of the base 16 allowing the passage of the shaft 4a. The openings 17 and 20 are such that they allow, using the flexible blades, a translational movement of the housing 8 in any radial direction, the axis of symmetry 5 of the housing 8 remaining parallel and offset with respect to the axis of rotation 4b of the output shaft. The side wall 18 of the cylindrical housing 8 is lined with a tube 11 conveying the fluid to be pumped. The exits of the tube 11 out of the housing can be done respectively by the base 16 and by the cover 19, as shown in FIGS. 5 and 6, but in the preferred embodiment (FIGS. 7,8) the exits are made by the side wall 18 of the housing 8, the crown 13 being partially interrupted to allow passage to the outlets (11a, 11b) of the pipe. Fixed on the output shaft and inside the housing is a rotor 6 (figures 1,2) or 7 (Figures 3,4) respectively driving a satellite 9 (Figures 1,2) or 10 (Figures 3,4) intended to crush the tube 11 against the side wall 18.

Dans une première forme de réalisation représentée figures 1 et 2, le rotor 6 est un galet principal cranté lié à l'arbre de sortie 4a et le satellite 9 est un galet secondaire cranté roulant autour du galet principal 6.In a first embodiment shown in FIGS. 1 and 2, the rotor 6 is a notched main roller linked to the output shaft 4a and the satellite 9 is a notched secondary roller rolling around the main roller 6.

Dans une seconde forme de réalisation représentée figures 3 et 4, le rotor 7 est un maneton lié à l'arbre de sortie 4a présentant une gorge 7a et le satellite 10 est un galet coopérant avec la gorge 7a et entraîné par le maneton.In a second embodiment shown in Figures 3 and 4, the rotor 7 is a crank pin connected to the output shaft 4a having a groove 7a and the satellite 10 is a roller cooperating with the groove 7a and driven by the crank pin.

La somme du rayon du rotor 6 (figure 1) ou de la distance de l'axe de rotation 4b à la gorge 7a (figure 3), du diamètre du satellite 9 ou 10 et de l'épaisseur du tuyau comprimé 11 est plus grande que le rayon de la paroi intérieure 18, ce qui provoque l'exentration du boitier 8 d'axe de symétrie 5 par rapport à l'axe de rotation de rotation 4b, l'axe de symétrie 5 restant toujours parallèle à l'axe 4b mais décalé de celui-ci dans la direction du satellite. La force de compression du tuyau 11 est obtenue par l'action des lames flexibles 12 sollicitées par l'exentration du boitier 8.The sum of the radius of the rotor 6 (Figure 1) or the distance from the axis of rotation 4b to the groove 7a (Figure 3), the diameter of the satellite 9 or 10 and the thickness of the compressed pipe 11 is greater as the radius of the inner wall 18, which causes the eccentricity of the housing 8 of axis of symmetry 5 relative to the axis of rotation 4b, the axis of symmetry 5 always remaining parallel to the axis 4b but offset from it in the direction of the satellite. The compression force of the pipe 11 is obtained by the action of the flexible blades 12 urged by the eccentricity of the housing 8.

Le mode de fonctionnement de la pompe ainsi décrite est le suivant : le moteur électrique 1 entraîne le rotor 6 ou 7 qui entraîne lui-même le satellite 9 ou 10 comprimant le tube 11 contre la paroi latérale 18. Le mouvement du satellite génère donc la propagation de cette compression entraînant le phénomène péristaltique décrit plus haut. Quand le satellite 9 ou 10 arrive en regard des sorties du tube un cycle a été accompli. C'est-à-dire que tout le fluide à l'intérieur du tube présent dans le boitier a été pulsé vers la sortie et la dépression relative à la décompression du tube en amont du satellite a aspiré du fluide à l'intérieur du tube remplaçant le fluide expulsé.The operating mode of the pump thus described is as follows: the electric motor 1 drives the rotor 6 or 7 which itself drives the satellite 9 or 10 compressing the tube 11 against the side wall 18. The movement of the satellite therefore generates the propagation of this compression causing the peristaltic phenomenon described above. When satellite 9 or 10 arrives opposite the outputs of tube a cycle has been completed. That is to say that all the fluid inside the tube present in the case was pulsed towards the exit and the depression relative to the decompression of the tube upstream of the satellite sucked fluid inside the tube replacing the expelled fluid.

La présence de lames flexibles extérieures, largement dimensionnées permet des tolérances assez larges sur la position des fixations par les bossages 14 et sur la constance du diamètre du tube tout en maintenant une pression suffisante du satellite sur le tube pour engendrer le phénomène péristaltique.The presence of flexible external blades, largely dimensioned allows fairly wide tolerances on the position of the fixings by the bosses 14 and on the constancy of the diameter of the tube while maintaining sufficient pressure of the satellite on the tube to generate the peristaltic phenomenon.

Bien que seuls deux modes de réalisation préférés aient été représentés et décrits, il est évident que certaines modifications apportées par l'homme du métier ne sortiraient pas du cadre de l'invention. Par exemple l'ensemble rotor-satellite peut être remplacé par un galet cylindrique excentré unique lié à l'arbre de sortie.Although only two preferred embodiments have been shown and described, it is obvious that certain modifications made by a person skilled in the art would not depart from the scope of the invention. For example, the rotor-satellite assembly can be replaced by a single eccentric cylindrical roller linked to the output shaft.

Claims (9)

  1. A peristaltic pump comprising an electric motor (1) with a bearing (2) and an output shaft (4a) in rotation round a rotation axis (4b) ; a pump body (3) fixed ridigly on the said bearing (2) ; a cylindrical casing (8) of axis of symmetry (5) parallel to the said output shaft (4a) ; a rotor (6, 7) fixed rigidly on the said output shaft and driven into rotation by the said output shaft (4a) inside the said cylindrical casing (8), a satellite (9, 10) of the said rotor (6, 7) driven into rotation inside the said casing (8) ; a flexible tube (11) covering the side wall (18) on the inside of the casing (8) and compressed between the said satellite (9, 10) and the said side wall (18), characterised in that the distance between the rotation axis (4b) and the distal end of the rotor (6, 7) and satellite (9, 10) assembly, added to the thickness of the tube (11) thus compressed, is greater than the radius of the cylindrical casing (8), whereby the said cylindrical casing (8) is mounted elastically on the body pump (3) via external elastic elements (12).
  2. A peristaltic pump according to claim 1, characterised in that the said fixed pump body (3) comprises a crown (13) centered on the said output shaft (4a) and exhibits two bosses (14) diametrically opposite one another, enabling to fasten the said crown (13) on the said bearing (2).
  3. A peristaltic pump according to the claim 1 or 2, characterised in that the said cylindrical casing (8) comprises a base (16) exhibiting a circular opening (17) enabling the passage of the said shaft (4a), a side wall (18) and a lid (19) designed to co-operate with the opened base of the said casing (8) and exhibiting a circular opening (20).
  4. A peristaltic pump according to any of the claims 1 to 3, characterised in that the said external elastic elements (12) are flexible blades connecting the said crown (13) and the said base (16) on the one hand and the said crown (13) and the said lid (19) on the other hand.
  5. A peristaltic pump according to any of the claims 1 to 4, characterised in that the said rotor (6) is a main jagged roller connected to the said output shaft (4a) and the said satellite (9) a secondary jagged roller running around the main roller (6).
  6. A peristaltic pump according to any of the claims 1 to 4, characterised in that the said rotor (7) is a crank pin connected to the said output shaft (4a) exhibiting a groove (7a) and the said satellite (10) is a roller co-operating with the groove (7a) driven by the said crank pin (7).
  7. A peristaltic pump according to any of the claims 3 to 6, characterised in that the said flexible tube (11) goes into and comes out of the casing (8) via respectively the lid (19) and base (16) of the cylindrical casing (8).
  8. A peristaltic pump according to any of the claims 3 to 6, characterised in that the said flexible tube (11) goes into and comes out of the casing (8) by the side wall (18), whereby the crown (13) is partially interrupted in order to let a free passage for the outputs of the tube (11).
  9. A peristaltic pump according to any of the claims 1 to 8, characterised in that the said rotor and satellite assembly is replaced with a single off-center cylindrical roller connected to the said output shaft.
EP19930401160 1992-05-13 1993-05-05 Peristaltic pump with an elastic external stator support Expired - Lifetime EP0570259B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9205794 1992-05-13
FR9205794A FR2691210A1 (en) 1992-05-13 1992-05-13 Peristaltic pump with elastic support outside the stator.

Publications (2)

Publication Number Publication Date
EP0570259A1 EP0570259A1 (en) 1993-11-18
EP0570259B1 true EP0570259B1 (en) 1996-01-10

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EP19930401160 Expired - Lifetime EP0570259B1 (en) 1992-05-13 1993-05-05 Peristaltic pump with an elastic external stator support

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EP (1) EP0570259B1 (en)
DE (1) DE69301271T2 (en)
FR (1) FR2691210A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008052425A1 (en) * 2006-10-23 2008-05-08 Sun Medical-Scientific (Shanghai) Co., Ltd. Intelligent remote-controlled portable intravenous injection and transfusion system
KR102049709B1 (en) * 2012-11-14 2020-01-08 코비디엔 엘피 Peristaltic pump cassette

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1129662A (en) * 1955-08-02 1957-01-24 Improvements to rotary pumps
GB1198770A (en) * 1968-12-31 1970-07-15 Ford Motor Co Windscreen Cleaning Systems
DE2153052A1 (en) * 1971-10-25 1973-05-03 Allen Longford & Associates Lt PERISTALTIC PUMP
DE4031554A1 (en) * 1990-02-23 1991-08-29 Standard Elektrik Lorenz Ag HOSE PUMP

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Publication number Publication date
DE69301271T2 (en) 1996-06-27
FR2691210A1 (en) 1993-11-19
DE69301271D1 (en) 1996-02-22
FR2691210B1 (en) 1994-07-13
EP0570259A1 (en) 1993-11-18

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