EP1771662A1 - Peristaltic pump cassette comprising a unit for adjusting a tube pinching - Google Patents

Peristaltic pump cassette comprising a unit for adjusting a tube pinching

Info

Publication number
EP1771662A1
EP1771662A1 EP05778710A EP05778710A EP1771662A1 EP 1771662 A1 EP1771662 A1 EP 1771662A1 EP 05778710 A EP05778710 A EP 05778710A EP 05778710 A EP05778710 A EP 05778710A EP 1771662 A1 EP1771662 A1 EP 1771662A1
Authority
EP
European Patent Office
Prior art keywords
cassette
cam
connection
peristaltic pump
clamping
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.)
Granted
Application number
EP05778710A
Other languages
German (de)
French (fr)
Other versions
EP1771662B1 (en
Inventor
Claude Voyeux
Mustapha Mazouzi
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.)
Gilson SAS
Original Assignee
Gilson SAS
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 Gilson SAS filed Critical Gilson SAS
Priority to PL05778710T priority Critical patent/PL1771662T3/en
Publication of EP1771662A1 publication Critical patent/EP1771662A1/en
Application granted granted Critical
Publication of EP1771662B1 publication Critical patent/EP1771662B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F04C5/00—Rotary-piston machines or pumps with the working-chamber walls at least partly resiliently deformable
    • 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
    • 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

Definitions

  • the invention relates to peristaltic pumps.
  • Peristaltic pumps have been known for many years and are widely used especially in medicine and research laboratories. They have the characteristic of causing the displacement of a liquid through a tube without a piece of the pump comes into contact with the liquid. It therefore becomes possible to pump liquids sensitive to external contamination such as blood.
  • the pump comprises rotating rollers that move by locally crushing the flexible tube, causing the liquid to move within the flexible tube.
  • the member extends in projection from an upper face of the cassette
  • the invention optimizes the nip for better performance and longer life of the tube.

Abstract

A cassette for use in a peristaltic pump is provided. The cassette includes a cassette frame, a cam, a cam position selector switch, and a biasing member. The cassette frame mounts to the peristaltic pump. The biasing member mounts to the cam and to the cassette frame and operably couples with the cam position selector switch. Moving the cam position selector switch in a first direction releases the cam position selector switch from the cassette frame. Moving the cam position selector switch in a second direction after releasing the cam position selector switch from the cassette frame adjusts a position of the cam relative to the cassette frame. The second direction is approximately perpendicular to the first direction.

Description

Cassette de pompe péristaltique comprenant un organe de réglage du pincement du tube. Peristaltic pump cassette comprising a device for adjusting the nip of the tube.
L'invention concerne les pompes péristaltiques. Les pompes péristaltiques sont connues depuis de nombreuses années et sont couramment utilisées notamment en médecine et dans les laboratoires de recherche. Elles ont pour caractéristique de provoquer Ie déplacement d'un liquide à travers un tube sans qu'une pièce de la pompe ne vienne en contact avec le liquide. H devient donc possible de pomper des liquides sensibles à une contamination extérieure tels que du sang. De façon classique, la pompe comprend des rouleaux rotatifs qui se déplacent en écrasant localement le tube flexible, ce qui entraîne le déplacement du liquide à l'intérieur de ce dernier.The invention relates to peristaltic pumps. Peristaltic pumps have been known for many years and are widely used especially in medicine and research laboratories. They have the characteristic of causing the displacement of a liquid through a tube without a piece of the pump comes into contact with the liquid. It therefore becomes possible to pump liquids sensitive to external contamination such as blood. Typically, the pump comprises rotating rollers that move by locally crushing the flexible tube, causing the liquid to move within the flexible tube.
Une telle pompe est par exemple divulguée dans le document EP- 339 857. Le tube flexible doit supporter ces contraintes tout en restant parfaitement étanche. La pompe du document précité comprend des cassettes amovibles comprenant chacune un tube et une came mobile à coulissement qui sollicite le tube à rencontre des rouleaux afin d'assurer un bon contact de ceux-ci avec le tube. Afin de préserver la durée de vie du tube, la pompe comprend des moyens de réglage de l'intensité du serrage exercé par Ia came sur le tube. Ces moyens comprennent deux curseurs déplaçables à l'intérieur de la cassette de façon à solliciter la came par effet de coin. Chacun des curseurs est en prise avec une partie filetée d'une tige dont la rotation peut être commandée depuis l'extérieur par un bouton. Cependant un inconvénient de cet agencement est que Ie réglage des moyens de serrage est relativement long lorsqu'il est nécessaire de changer l'intensité du serrage sur une grande amplitude.Such a pump is for example disclosed in EP-339 857. The flexible tube must withstand these constraints while remaining perfectly sealed. The pump of the aforementioned document comprises removable cassettes each comprising a tube and a movable cam sliding which urges the tube against the rollers to ensure good contact thereof with the tube. In order to preserve the service life of the tube, the pump comprises means for adjusting the intensity of the clamping exerted by the cam on the tube. These means comprise two sliders movable inside the cassette so as to solicit the cam by corner effect. Each of the sliders is engaged with a threaded portion of a rod whose rotation can be controlled from the outside by a button. However, a disadvantage of this arrangement is that the adjustment of the clamping means is relatively long when it is necessary to change the clamping intensity over a large amplitude.
Un but de l'invention est de faciliter et en particulier d'accélérer l'utilisation des moyens de serrage.An object of the invention is to facilitate and in particular to accelerate the use of the clamping means.
A cet effet, on prévoit selon l'invention une cassette pour pompe péristaltique, comprenant un organe de réglage de serrage, immobilisé par liaison avec une pièce de la cassette, la liaison étant débrayable pour déplacer l'organe lors d'un réglage de l'intensité de serrage.For this purpose, according to the invention there is provided a cassette for a peristaltic pump, comprising a clamping adjustment member, immobilized by connection with a part of the cassette, the connection being disengageable to move the member during a tightening intensity adjustment.
Ainsi, une fois la liaison débrayée, l'organe peut être déplacé facilement et rapidement, y compris sur une grande amplitude. La cassette selon l'invention pourra présenter en outre au moins l'une quelconque des caractéristiques suivantes :Thus, once the link disengaged, the organ can be moved easily and quickly, including a large amplitude. The cassette according to the invention may also have at least one of the following characteristics:
- la liaison est une liaison par complémentarité de forme ;the bond is a form-complementary bond;
- la liaison est une liaison crantée ;the link is a notched link;
- elle est agencée de sorte que la liaison est débrayable par appui sur l'organe ;- It is arranged so that the connection is disengageable by bearing on the body;
- l'organe est accessible depuis l'extérieur de la cassette et de préférence s'étend à l'extérieur de la cassette ;the member is accessible from outside the cassette and preferably extends outside the cassette;
- l'organe s'étend en saillie d'une face supérieure de la cassette ;the member extends in projection from an upper face of the cassette;
- elle comprend une came et un ressort interposé entre l'organe et la came ; etit comprises a cam and a spring interposed between the member and the cam; and
- elle comprend une came en contact avec l'organe.it comprises a cam in contact with the organ.
On prévoit également selon l'invention une pompe péristaltique comprenant un organe de réglage de serrage Immobilisé par liaison avec une pièce de la pompe, la liaison étant débrayable pour déplacer l'organe lors d'un réglage de l'intensité de serrage.Also provided according to the invention a peristaltic pump comprising a clamping adjustment member Immobilized by connection with a pump part, the connection being disengageable to move the member during adjustment of the clamping intensity.
On prévoit enfin selon l'invention un procédé de réglage d'un serrage d'une pompe péristaltique, comprenant les étapes consistant à :Finally, according to the invention, there is provided a method for adjusting a clamping of a peristaltic pump, comprising the steps of:
- débrayer une liaison d'un organe avec une pièce de Ia pompe ; et- disengage a connection of an organ with a part of the pump; and
- déplacer l'organe. D'autres caractéristiques et avantages de l'invention apparaîtront encore dans la description suivante d'un mode préféré de réalisation donné à titre d'exemple non limitatif en référence aux dessins annexés sur lesquels :- move the organ. Other features and advantages of the invention will become apparent in the following description of a preferred embodiment given by way of non-limiting example with reference to the accompanying drawings, in which:
- la figure 1 est une vue en perspective d'une tête de pompe péristaltique et d'une cassette selon un mode préféré de réalisation de l'invention, la cassette étant démontée ; - la figure 2 est une vue analogue à la figure 1 montrant la cassette montée sur la tête ;- Figure 1 is a perspective view of a peristaltic pump head and a cassette according to a preferred embodiment of the invention, the cassette being disassembled; - Figure 2 is a view similar to Figure 1 showing the cassette mounted on the head;
- la figure 3 est une vue en coupe axiale de la tête de pompe avec la cassette de Ia figure 2 ; - la figure 4 est une vue en élévation de la cassette e la figure 1 ave certaines parties cachées illustrées en traits pointillés ; etFIG. 3 is an axial sectional view of the pump head with the cassette of FIG. 2; FIG. 4 is an elevational view of the cassette of FIG. 1 with certain hidden portions illustrated in broken lines; and
- la figure 5 est une vue en perspective de la cassette de la figure 1. On a illustré aux figures 1 à 5 une tête de pompe péristaltique avec une cassette selon un mode préféré de réalisation de l'invention. De façon connue en soi, la tête 2 comprend un carter 4 présentant un axe principal de symétrie 6. La tête comprend un ensemble de rouleaux 8 qui sont en l'espèce au nombre de huit. Les rouleaux sont disposés symétriquement autour de l'axe 6. Les rouleaux sont montés rotatifs sur un support central 10. Chacun des rouleaux a en l'espèce une forme cylindrique, l'axe de chaque rouleau étant parallèle à l'axe principal 6. La pompe comprend des moyens non illustrés et connus en eux- mêmes pour mettre en rotation le support 10 autour de l'axe 6.FIG. 5 is a perspective view of the cassette of FIG. 1. FIGS. 1 to 5 illustrate a peristaltic pump head with a cassette according to a preferred embodiment of the invention. In known manner, the head 2 comprises a housing 4 having a main axis of symmetry 6. The head comprises a set of rollers 8 which are in this case eight in number. The rollers are arranged symmetrically about the axis 6. The rollers are rotatably mounted on a central support 10. Each of the rollers has in this case a cylindrical shape, the axis of each roll being parallel to the main axis 6. The pump comprises means not illustrated and known in themselves for rotating the support 10 about the axis 6.
Le carter 4 comprend deux parois principales avant 12 et arrière 14 définissant entre elles un logement 16 pour la réception de plusieurs cassettes 18 telles que celle représentée à la figure 1. Les cassettes peuvent être reçues dans le logement 16 comme illustré à Ia figure 2 les unes à côté des autres, parallèlement les unes aux autres et en contact les unes avec les autres, chaque cassette s'étendant parallèlement aux parois 12 et 14. Les parois 12 et 14 sont reliées l'une à l'autre par deux tringles 20 s'étendant parallèlement à l'axe 6 et servant de support et de moyen de verrouillage à chacune des cassettes 18, en coopération avec celles-ci. Chaque cassette a une forme essentiellement plate et s'étend ainsi reçue dans un plan perpendiculaire à l'axe 6.The housing 4 comprises two main front walls 12 and rear 14 defining between them a housing 16 for the reception of several cassettes 18 such as that shown in Figure 1. The cassettes can be received in the housing 16 as shown in Figure 2. next to each other, parallel to each other and in contact with each other, each cassette extending parallel to the walls 12 and 14. The walls 12 and 14 are connected to one another by two rods 20 extending parallel to the axis 6 and serving as support and locking means to each of the cassettes 18, in cooperation therewith. Each cassette has a substantially flat shape and thus extends in a plane perpendicular to the axis 6.
Comme illustré à la figure 3, chaque cassette comprend un corps 22 ainsi qu'un tube flexible 24 monté de façon amovible dans le corps 22 en passant notamment à travers des encoches 25 de ce dernier. Le corps a essentiellement une forme en U renversé et comprend un sommet allongé formant une traverse 26 présentant deux extrémités à partir desquelles descendent deux bras 28. Les encoches 25 sont ménagées au voisinage des extrémités inférieures des bras 28. Ces mêmes extrémités constituent les moyens de fixation et de verrouillage de la cassette 18 à Ia tête 2.As illustrated in Figure 3, each cassette comprises a body 22 and a flexible tube 24 removably mounted in the body 22 by passing in particular through notches 25 of the latter. The body is substantially U-shaped in shape and comprises an elongated apex forming a cross-member 26 having two ends from which two arms 28 descend. notches 25 are formed in the vicinity of the lower ends of the arms 28. These same ends constitute the means for fixing and locking the cassette 18 to the head 2.
Une cavité 30 est ménagée en regard de la traverse 26, entre les bras 28. La cassette 18 comprend une came 32 reçue dans la cavité 30. La came 32 a une forme essentiellement plate rectangulaire présentant un évidement en forme de dos d'âne dans sa face inférieure 34 destinée à être en regard des rouleaux 8. Comme illustré à la figure 3, le tube 24 vient en appui contre ce bord 34 de la came. La portion du tube en appui contre ce bord est celle qui s'étend entre les portions du tube logées dans les encoches 25. La cassette présente deux parois 36 avant et arrière s'étendant chacune de l'un à l'autre des bras 28 pour recouvrir partiellement chaque face de la came 32.A cavity 30 is formed facing the crosspiece 26, between the arms 28. The cassette 18 comprises a cam 32 received in the cavity 30. The cam 32 has a substantially flat rectangular shape with a recess in the shape of a hump in its lower face 34 intended to face the rollers 8. As illustrated in Figure 3, the tube 24 abuts against this edge 34 of the cam. The portion of the tube bearing against this edge is that which extends between the portions of the tube housed in the notches 25. The cassette has two walls 36 front and rear each extending from one to the other of the arms 28. to partially cover each face of the cam 32.
Dans le présent mode de réalisation, la cassette 18 comprend un ressort 38 en forme de lame. Une portion médiane du ressort s'étend au voisinage de la partie centrale de la traverse 26 Les portions d'extrémité du ressort sont fixées à la came 32 grâce à des crochets 40 s'étendant à cette fin en saillie d'un bord supérieur 41 de la came. Le tube flexible a été ôté pour plus de clarté sur les figures 4 et 5.In the present embodiment, the cassette 18 includes a leaf spring 38. A medial portion of the spring extends in the vicinity of the central portion of the cross member 26 The end portions of the spring are fixed to the cam 32 by means of hooks 40 extending for this purpose projecting from an upper edge 41 of the cam. The flexible tube was removed for clarity in Figures 4 and 5.
Des jours 42 ménagés dans les parois 36 laissent voir de chaque côté de la cassette les extrémités du ressort 38.Days 42 formed in the walls 36 show on each side of the cassette the ends of the spring 38.
La cassette 18 comprend un coulisseau 50 en forme générale de parallélépipède rectangle. Le coulisseau 50 est en contact par sa face inférieure avec la face supérieure de la zone médiane du ressort 38. De préférence, il est fixé à cette face. Le coulisseau est monté mobile à coulissement dans deux gorges 52 ménagées respectivement dans les faces avant et arrière de la traverse 26 et s'étendant en regard l'une de l'autre. La portion médiane du coulisseau n'est pas logée dans les gorges. Les gorges s'étendent suivant la direction verticale de façon à permettre au coulisseau de se déplacer verticalement. La zone médiane de la traverse 26 comprend en regard des gorges 52 un évidement 54 recevant un organe de réglage qui est ici constitué par un curseur 56. L'évidement 54 se prolonge vers Ie haut par une cheminée qui s'étend jusqu'à la face supérieure de la traverse 26 en formant dans celle-ci un orifice à travers lequel s'étend un doigt 60 du curseur en saillie de la face supérieure. De part et d'autre de la base de la cheminée, la cavité 54 présente une face supérieure 55 orientée vers le bas et présentant un crantage constitué par une succession de dents. Le curseur 56 présente une face supérieure 57 de part et d'autre du doigt 60, munie d'un crantage de forme complémentaire. De la sorte, cette face 57 peut venir en prise avec la face supérieure 55 de la traverse 26 afin d'immobiliser le curseur 60 par complémentarité de forme, c'est-à-dire par mise en prise des crans du curseur avec les crans de la traverse 26.The cassette 18 comprises a slider 50 in the general shape of a rectangular parallelepiped. The slide 50 is in contact by its lower face with the upper face of the central zone of the spring 38. Preferably, it is fixed to this face. The slide is slidably mounted in two grooves 52 formed respectively in the front and rear faces of the crosspiece 26 and extending facing one another. The middle portion of the slider is not housed in the grooves. The grooves extend in the vertical direction to allow the slide to move vertically. The median zone of the crosspiece 26 comprises facing grooves 52 a recess 54 receiving a control member which is here constituted by a slider 56. The recess 54 extends upwardly through a chimney extending to the upper face of the cross member 26 forming therein an orifice through which extends a finger 60 of the slider protruding from the upper side. On either side of the base of the chimney, the cavity 54 has an upper face 55 oriented downwards and having a notch constituted by a succession of teeth. The slider 56 has an upper face 57 on either side of the finger 60, provided with a complementary shaped detent. In this way, this face 57 can engage with the upper face 55 of the crosspiece 26 to immobilize the slider 60 by complementarity of shape, that is to say by engaging the notches of the slider with the notches from the crossing 26.
Le curseur présente une face inférieure 62 inclinée de façon à donner au curseur une configuration et une fonction de coin. Cette face vient en contact avec la face supérieure du coulisseau 50 afin de solliciter celui-ci vers le bas, c'est-à-dire en direction du tube 24. Le ressort 38 a donc pour fonction de tendre à éloigner l'un de l'autre le curseur 56 et la came 32 en sollicitant respectivement le curseur vers le haut et la came vers le bas. Quant à la came, elle est bloquée vers le bas par le tube flexible. En d'autres termes, le curseur 56 se trouve en appui sur le coulisseau 50, lequel appuie sur le ressort 38, lequel sollicite vers le bas la came 32 qui permet quant à elle de solliciter le tube en direction des rouleaux 8.The slider has a lower face 62 inclined to give the cursor a configuration and a corner function. This face comes into contact with the upper face of the slider 50 in order to urge it downwards, that is to say in the direction of the tube 24. The spring 38 therefore has the function of tending to move away one of the other the cursor 56 and the cam 32 by respectively urging the cursor up and the cam down. As for the cam, it is blocked down by the flexible tube. In other words, the slider 56 is resting on the slider 50, which presses the spring 38, which urges the cam 32 downwards, which in turn allows the tube to be urged towards the rollers 8.
Le curseur 56 permet de régler la force de serrage de la came sur le tube. Au repos, le curseur 56 est immobilisé grâce à la liaison crantée par complémentarité de forme avec la traverse 26. Pour modifier l'intensité du serrage du tube exercé par la came, on exerce un appui vers le bas sur le doigt 60, ce qui a pour effet de débrayer la liaison entre la face supérieure du curseur et la face supérieure de la traverse 26. Autrement dit, la liaison par complémentarité de forme est interrompue. Le curseur peut donc être manoeuvré vers la gauche ou vers la droite en le tenant par Ie doigt 60. Compte tenu de l'inclinaison de la face inférieure 62 et de sa direction d'inclinaison dans le présent exemple, le serrage sera moins intense si l'on déplace le curseur vers la droite et sera plus intense si l'on déplace le curseur vers la gauche. Lorsque le serrage souhaité a été obtenu, il suffit de relâcher le curseur qui, sollicité par le ressort, se remet en prise dans la position souhaitée avec la face supérieure de la traverse 26.The slider 56 makes it possible to adjust the clamping force of the cam on the tube. At rest, the slider 56 is immobilized thanks to the notched connection by complementarity of shape with the crossbar 26. To modify the intensity of the clamping of the tube exerted by the cam, a downward pressure is exerted on the finger 60, which has the effect of disengaging the connection between the upper face of the slider and the upper face of the crossbar 26. In other words, the form of complementarity connection is interrupted. The slider can thus be operated to the left or to the right by holding it by the finger 60. Given the inclination of the lower face 62 and its inclination direction in the present example, the tightening will be less intense if you move the cursor to the right and will be more intense if you move the cursor to the left. When the desired tightening has been obtained, just release the slider which, biased by the spring, recovers in the desired position with the upper face of the crossbar 26.
Ce système permet d'ajuster la force de pincement du tube 24, par exemple en fonction du diamètre de celui-ci, afin d'optimiser le couple débit- pression ainsi que la durée de vis des tubes. On peut également par ce moyen tenir compte de certaines caractéristiques du liquide véhiculé dans le tube.This system makes it possible to adjust the clamping force of the tube 24, for example as a function of the diameter thereof, in order to optimize the flow-pressure torque as well as the screw life of the tubes. It is also possible by this means to take into account certain characteristics of the liquid carried in the tube.
Le déplacement du curseur permet de faire varier l'écrasement du ressort, et donc par interaction la force de pincement du tube par l'intermédiaire de la came. Le maintien du curseur en position au repos est assuré par les crantages opérant par complémentarité de forme. Grâce au déplacement direct du curseur, l'intensité du serrage par effet de coin peut être variée de façon simple et rapide.The displacement of the slider makes it possible to vary the crushing of the spring, and thus by interaction the gripping force of the tube via the cam. Maintaining the cursor in the rest position is ensured by the notches operating by complementarity of form. Thanks to the direct movement of the cursor, the intensity of the wedge clamping can be varied quickly and easily.
Des repères pourront être indiqués sur la face supérieure de la cassette pour marquer différentes positions du curseur correspondant à des intensités de serrage prédéterminées. On pourra ainsi prévoir une graduation pour le réglage de l'intensité du serrage. Cette graduation pourra être fonction par exemple du diamètre du tube utilisé.Marks may be indicated on the upper face of the cassette to mark different positions of the cursor corresponding to predetermined clamping intensities. It will thus be possible to provide a graduation for adjusting the clamping intensity. This graduation may be a function, for example, of the diameter of the tube used.
Grâce à la position du curseur au sommet de la cassette, le réglage de la force de pincement et la lecture du réglage ainsi réalisé sont aisés. L'invention permet d'optimiser le pincement pour un meilleur rendement et une plus longue durée de vie du tube.Thanks to the position of the cursor at the top of the cassette, the adjustment of the clamping force and the reading of the adjustment thus achieved are easy. The invention optimizes the nip for better performance and longer life of the tube.
L'invention facilite la répétabilité du réglage, c'est-à-dire la faculté de reproduire à différents moments la même intensité de serrage. La présence du couϋsseau 60 ou pièce intermédiaire permet d'éviter la transmission d'efforts latéraux entre le curseur et Ia came.The invention facilitates the repeatability of the adjustment, that is to say the ability to reproduce at different times the same clamping intensity. The presence of the neck 60 or intermediate piece avoids the transmission of lateral forces between the slider and the cam.
Bien entendu, on pourra prévoir de nombreuses modifications de l'invention sans sortir du cadre de celle-ci.Of course, we can provide many modifications of the invention without departing from the scope thereof.
On pourra constituer la liaison par complémentarité de forme par d'autres moyens qu'un crantage. Il pourra s'agir par exemple d'une forme en vague. On pourra prévoir en outre que le débrayage de la liaison se fait par d'autres moyens qu'un appui sur le curseur.The form-complementary connection can be constituted by means other than a notch. It may be for example a wave shape. It can further be provided that the disengagement of the connection is by means other than a support on the cursor.
La cassette pourra être dépourvue de ressorts. Ainsi, on pourra prévoir que le curseur vient directement en contact avec la came. On pourra mettre l'invention en œuvre dans une pompe péristaltique dépourvue de cassette amovible.The cassette may be without springs. Thus, it can be provided that the cursor comes directly in contact with the cam. The invention can be implemented in a peristaltic pump without a removable cassette.
L'organe de réglage pourra être un organe rotatif, par exemple coopérant avec une liaison vis-écrou.The adjustment member may be a rotary member, for example cooperating with a screw-nut connection.
On pourra prévoir de disposer l'organe de réglage afin qu'il soit accessible en partie supérieure de la cassette indépendamment du caractère débrayable de la liaison associée à cet organe. It may be provided to arrange the adjustment member so that it is accessible in the upper part of the cassette regardless of the disengageable nature of the link associated with this body.

Claims

REVENDICATIONS
1. Cassette (18) pour pompe péristaltique (2), comprenant un organe (56) de réglage de serrage, immobilisé par liaison avec une pièce (26) de la cassette, caractérisée en ce que la liaison est débrayable pour déplacer l'organe lors d'un réglage de l'intensité de serrage.1. Cassette (18) for peristaltic pump (2), comprising a member (56) for clamping adjustment, immobilized by connection with a part (26) of the cassette, characterized in that the connection is disengageable to move the organ when adjusting the clamping intensity.
2. Cassette selon la revendication précédente, caractérisée en ce que la liaison est une liaison par complémentarité de forme.2. Cassette according to the preceding claim, characterized in that the bond is a form of complementarity connection.
3. Cassette selon l'une quelconque des revendications précédentes, caractérisée en ce que la liaison est une liaison crantée.3. Cassette according to any one of the preceding claims, characterized in that the connection is a notched link.
4. Cassette selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle est agencée de sorte que la liaison est débrayable par appui sur l'organe (56).4. Cassette according to any one of the preceding claims, characterized in that it is arranged so that the connection is disengageable by bearing on the member (56).
5. Cassette selon l'une quelconque des revendications précédentes, caractérisée en ce que l'organe (56) est accessible depuis l'extérieur de la cassette (18) et de préférence s'étend à l'extérieur de la cassette.5. Cassette according to any one of the preceding claims, characterized in that the member (56) is accessible from outside the cassette (18) and preferably extends outside the cassette.
6. Cassette selon l'une quelconque des revendications précédentes, caractérisée en ce que l'organe (56) s'étend en salifie d'une face supérieure de la cassette. 6. Cassette according to any one of the preceding claims, characterized in that the member (56) extends salified from an upper face of the cassette.
7. Cassette selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend une came (32) et un ressort (38) interposé entre l'organe (56) et la came.7. Cassette according to any one of the preceding claims, characterized in that it comprises a cam (32) and a spring (38) interposed between the member (56) and the cam.
8. Cassette selon l'une quelconque des revendications 1 à 6, caractérisée en ce qu'elle comprend une came en contact avec l'organe. 8. Cassette according to any one of claims 1 to 6, characterized in that it comprises a cam in contact with the body.
9. Pompe péristaltique (2) comprenant un organe (56) de réglage de serrage immobilisé par liaison avec une pièce (26) de la pompe, caractérisée en ce que la liaison est débrayable pour déplacer l'organe lors d'un réglage de l'intensité de serrage.9. Peristaltic pump (2) comprising a member (56) for clamping adjustment immobilized by connection with a part (26) of the pump, characterized in that the connection is disengageable to move the body during an adjustment of the clamping intensity.
10. Procédé de réglage d'un serrage d'une pompe péristaltique (2), caractérisé en ce qu'il comprend les étapes consistant à : - débrayer une liaison d'un organe (56) avec une pièce (26) de la pompe ; et10. A method of adjusting a clamping of a peristaltic pump (2), characterized in that it comprises the steps of: - disengaging a connection of a member (56) with a part (26) of the pump; and
- déplacer Forgane. - move Forgane.
EP05778710A 2004-06-22 2005-06-17 Peristaltic pump cassette comprising a unit for adjusting a tube pinching Active EP1771662B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05778710T PL1771662T3 (en) 2004-06-22 2005-06-17 Peristaltic pump cassette comprising a unit for adjusting a tube pinching

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0406764A FR2871857B1 (en) 2004-06-22 2004-06-22 PERISTALTIC PUMP CASSETTE COMPRISING A TUBE PINCH ADJUSTING MEMBER
PCT/FR2005/001524 WO2006008376A1 (en) 2004-06-22 2005-06-17 Peristaltic pump cassette comprising a unit for adjusting a tube pinching

Publications (2)

Publication Number Publication Date
EP1771662A1 true EP1771662A1 (en) 2007-04-11
EP1771662B1 EP1771662B1 (en) 2008-02-06

Family

ID=34947371

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05778710A Active EP1771662B1 (en) 2004-06-22 2005-06-17 Peristaltic pump cassette comprising a unit for adjusting a tube pinching

Country Status (15)

Country Link
US (1) US20070217932A1 (en)
EP (1) EP1771662B1 (en)
JP (1) JP2008503688A (en)
KR (1) KR20070033003A (en)
CN (1) CN1973132A (en)
AT (1) ATE385543T1 (en)
CA (1) CA2571734A1 (en)
DE (1) DE602005004665T2 (en)
DK (1) DK1771662T3 (en)
ES (1) ES2301046T3 (en)
FR (1) FR2871857B1 (en)
PL (1) PL1771662T3 (en)
RU (1) RU2006144289A (en)
TW (1) TW200606339A (en)
WO (1) WO2006008376A1 (en)

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Also Published As

Publication number Publication date
EP1771662B1 (en) 2008-02-06
JP2008503688A (en) 2008-02-07
FR2871857B1 (en) 2008-09-12
KR20070033003A (en) 2007-03-23
PL1771662T3 (en) 2008-07-31
TW200606339A (en) 2006-02-16
DK1771662T3 (en) 2008-05-26
FR2871857A1 (en) 2005-12-23
DE602005004665D1 (en) 2008-03-20
CA2571734A1 (en) 2006-01-26
ATE385543T1 (en) 2008-02-15
US20070217932A1 (en) 2007-09-20
WO2006008376A1 (en) 2006-01-26
DE602005004665T2 (en) 2009-02-05
ES2301046T3 (en) 2008-06-16
RU2006144289A (en) 2008-07-27
CN1973132A (en) 2007-05-30

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