EP1342011B1 - Pompe tubulaire peristaltique - Google Patents

Pompe tubulaire peristaltique Download PDF

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Publication number
EP1342011B1
EP1342011B1 EP01995604A EP01995604A EP1342011B1 EP 1342011 B1 EP1342011 B1 EP 1342011B1 EP 01995604 A EP01995604 A EP 01995604A EP 01995604 A EP01995604 A EP 01995604A EP 1342011 B1 EP1342011 B1 EP 1342011B1
Authority
EP
European Patent Office
Prior art keywords
roller wheel
axis
pump according
peristaltic
hose
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 - Lifetime
Application number
EP01995604A
Other languages
German (de)
English (en)
Other versions
EP1342011A1 (fr
Inventor
Christian Haser
Peter Zentner
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.)
WOM World of Medicine GmbH
Original Assignee
WOM World of Medicine GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WOM World of Medicine GmbH filed Critical WOM World of Medicine GmbH
Publication of EP1342011A1 publication Critical patent/EP1342011A1/fr
Application granted granted Critical
Publication of EP1342011B1 publication Critical patent/EP1342011B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the invention relates to a peristaltic peristaltic pump with a roller wheel rotatable about a roller wheel axis with rollers mounted on the roller wheel, wherein the rollers roll on a circular path with a specific radius related to the roller wheel axis, and with a pressure bar with a support surface, wherein the support surface along a circular path determined radius runs around the axis of rotation of the roller wheel and wherein between the support surface and the rollers of the roller wheel, a flexible hose can be inserted.
  • a peristaltic peristaltic pump of the aforementioned construction is known from DE-G 83 29 579 previously.
  • the pressure bar is formed by a deformable band which is firmly clamped at one end and held adjustable at the other end in its axial direction, whereby an adaptation to different tube diameter is made possible.
  • the existing of a metallic material, plastic or a fabric band has demnm disadvantage of too high elasticity.
  • the elastic band is stretched over the rollers and extends between the rollers each straight, whereby the liquid delivery space formed in the flexible tube is reduced, so that the transported flow rate and thus the delivery rate are relatively low.
  • a peristaltic peristaltic pump with a rigid pressure bar is also known from practice.
  • precision hoses with small tolerances are used and the mechanical parts are manufactured and assembled with high precision. Nevertheless, errors occur due to hose tolerances and manufacturing and assembly tolerances of the mechanical parts.
  • the rigid pressure bar is pressed against the roller wheel with a spring, as e.g. in Arthroskopiepumpen the company Stryker, Arthrex and FMS is known.
  • the disadvantage here is that the introduced spring force is directed and the tube exactly abuts only in the role position in the force direction line. In all other positions of the role only one component of the spring force is effective. At the 90 ° position of the roller to the spring force direction, this component is equal to zero. As a result, only a limited tolerance compensation is possible. It can not be produced high pressures for high flow rates.
  • the invention is therefore based on the technical problem of providing a peristaltic peristaltic pump with improved delivery pressure, in particular also with likewise improved delivery rates.
  • the invention provides that the support surface is formed of an elastically deformable plastic and that the pressure bar is preformed with the proviso that the course of the support surface in the unloaded state of the Anyakbügels substantially corresponds to the course of the support surface in the tensioned state.
  • the unloaded state corresponds to a mounting position of the Anyakbügels, in which a tube is inserted.
  • the tensioned state corresponds to an operating position in which the support surface is moved relative to the mounting position in directions to the roller wheel axis of rotation, wherein the hose between rollers and support surface is clamped.
  • the clamping bracket is mounted or fixed in both positions in the region of its two ends and running freely between them, ie is not supported by other components.
  • the Anyakbügel of rigid, metallic material and is provided with the support surface of the elastically deformable plastic.
  • the pressure bar is formed entirely from the elastically deformable plastic.
  • the plastic is preferably polyoxymethylene (POM).
  • POM polyoxymethylene
  • the pressure bar is made of materials with great elasticity and can be structurally designed so that it clamps when closing by a self-deformation with a bias the hose on the rollers. During the movement of the roller wheel, the elastic deformation (preload) runs with the roller through the Andschreibbügel.
  • roller wheels 1 show the front panel 15 of a device housing for two peristaltic peristaltic pumps 20,21, the roller wheels 1 are equipped with four rollers 2 and driven by mounted on the back of the front panel 15 electric drive motors 16.
  • Each roller wheel 1 with four rollers 2 is assigned a pressure bar 3 with a support surface 4 on the side facing the rollers 2, wherein the support surface 4 is provided with an inlet region 5, a central region 6 and an outlet region 7, as shown in FIG is shown.
  • the pressure bar 3 is pivotally mounted about an arranged on the front panel 15 pivot axis 8 and provided at its opposite end with a clamping pin 10 which engages on the one hand in a clamping bracket 25 and on the other hand with the clamping lugs 26, 27 a clamping plate 24 cooperates on the front panel 15 is permanently mounted.
  • a closure plate 13 With the clamping bracket 25, a closure plate 13 is fixedly connected, which is pivotable by means of an attached thereto actuating element 11.
  • the rollers 2 of the peristaltic peristaltic pumps 20, 21 roll on a circular path with the radius R1 relative to the axis of rotation D of the roller wheel 1 along the support surface 4 of the pressure bar 3, wherein the support surface 4 along a circular path with the radius R2 about the axis of rotation D of the roller wheel 1 runs and wherein between the support surface 4 and the rollers 2 of the roller wheel 1, a flexible hose 19 is inserted.
  • the pressure bar 3 and the support surface 4 are integrally formed from an elastically deformable plastic.
  • the pressure bar 3 also made of metallic material exist and be provided with an internal covering made of plastic, which forms the support surface 4.
  • the pressure bar 3 is preformed with the proviso that the course of the support surface 4 in the unloaded state of the Andruckbügels 3 substantially corresponds to the course of the support surface 4 in the tensioned state.
  • the preferred plastic used is polyoxymethylene (POM). Delrin is preferably used by Dupont or Hostaform by Hoechst.
  • the tensile modulus is preferably ⁇ 3000 MPa (megapascals).
  • the bending fatigue strength is preferably ⁇ 30 MPa.
  • the impact strength at a room temperature of 23 ° C is preferably ⁇ 130 KJ / m 2 (kilojoules per square meter).
  • the coefficient of sliding friction against steel in dry running is preferably ⁇ 0.30.
  • Such a plastic POM has proven in tests to be particularly suitable for the support surface 4 of the Andruckbügels 3 of the peristaltic pumps 20, 21.
  • the pressure bar 4 each peristaltic pump 20, 21 is opposite a fixedly mounted on the front panel 15 holder 17 with two through holes 18 for inserting a flexible hose 19, which is each directed tangentially to the roller wheel 1 and on the inside of the Anyakbügels 3 on the support surface 4 for Plant comes.
  • the pressure bar 4 has an inlet area 5, a central area 6 and an outlet area 7, wherein the pressure bar 3, at least in the outlet area 7, preferably also in the inlet area 5, has an enlarged cross-section compared to the central area 6.
  • the center region 6 extends, with respect to the axis of rotation D of the roller wheel 1, over an angle of 10 to 90 °, preferably from 20 to 60 °, based on the looping of the roller wheel 1 through the hose 19.
  • the pressure bar 3 extends, relative to the axis of rotation D, over an angle of 90 ° to 180 °, preferably from 120 ° to 170 °.
  • Anyakbügel 3 is at its other end by means of the clamping device 9 between a mounting position I for the hose 19 and an operating position II for the hose 19th pivotable.
  • the clamping device 9 arranged on the second end of the Anyakbügels 3 clamping pin 10 and about a parallel to the axis of rotation D of the roller wheel 1 clamping axis S rotatable closure plate 13 with an actuating element 11.
  • the cap 13 covers in the operating position II, the roller wheel 1 and the inserted tube 19 from the front and thus fixes the hose 19 in the direction of the axis of rotation D of the roller wheel 1.
  • the cap 13 is frictionally engaged in the operating position II.
  • the roller wheel 1 and / or the pressure bar 3 are interchangeable.
  • the roller wheel 1 and / or the pressure bar 3 can be selected with regard to the radius difference R2-R1 with the proviso that in the mounting position I a predetermined tube 19 with an outside diameter smaller than R2-R1 can be inserted.
  • the roller wheel 1 and / or the pressure bar 3 can be selected with regard to the radius difference R2-R1 with the proviso that a predetermined tube with a wall thickness of ⁇ R2-R1 / 2 can be used.
  • the illustrated peristaltic peristaltic pumps 20, 21 form an arthroscopy pump, in which the hose pump 20 shown on the left in FIG. 1 forms the suction side and the peristaltic pump 21 shown on the right in FIG. 1 forms the flushing side.
  • the suction side hose pump 20 rotates clockwise.
  • the hose pump 21 of the purge side turns counterclockwise.
  • Two peristaltic pumps 20, 21 are assigned holders 22 for the hose 19. In the holders 22 pressure sensors are arranged. Between the two peristaltic pumps 20, 21, the front panel 15 includes a window 23 for a display for displaying the values of pressure, flow rate and the like. the arthroscopy pump.
  • the pressure bar 3, at least in the middle region 6, has a slot-shaped recess which extends along a circular path and the axis of rotation D of the roller wheel 1.

Landscapes

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

Claims (14)

  1. Pompe à tuyaux péristaltique comprenant une roue à rouleaux (1) rotative autour d'un axe de rotation D de la roue à rouleaux, des rouleaux (2) montés sur cette roue à rouleaux (1), ces rouleaux (2) se déroulant sur une course circulaire avec le rayon R1, par rapport à cet axe de rotation D de la roue à rouleaux, et comprenant un étrier de pression (3) ayant une surface de support (4), cette surface de support (4) s'étendant en une course circulaire avec le rayon R2 autour de cet axe de rotation D de cette roue à rouleaux (1), et entre cette surface de support (4) et ces rouleaux (2) de cette roue à rouleaux (1), un tuyau élastique (19) étant insérable,
    caractérisée en ce
    que cette surface de support (4) est fabriquée à partir d'un matériau plastique déformable élastiquement, et
    que cet étrier de pression (3) est préformé de telle manière que la course de cette surface de support (4) dans l'état relâché de cet étrier de pression (3), qui correspond à une position de montage de cet étrier de pression (3), dans laquelle ce tuyau (19) est insérable, essentiellement correspond à la course de cette surface de support (4) dans l'état tendu, qui correspond à une position de marche, dans laquelle cette surface de support (4) est déplacée par rapport à cette position de montage en direction vers cet axe de rotation D de la roue à rouleaux, ce tuyau (19) étant serré entre ces rouleaux (2) et cette surface de support (4).
  2. Pompe à tuyaux péristaltique selon la revendication 1, caractérisée en ce que cet étrier de pression (3) est fabriqué à partir de ce matériau plastique déformable élastiquement.
  3. Pompe à tuyaux péristaltique selon la revendication 1 ou 2, caractérisée en ce que ce matériau plastique est le polyoxyméthylène (POM).
  4. Pompe à tuyaux péristaltique selon une des revendications 1 à 3, caractérisée en ce que ce matériau plastique a un module d'élasticité de ≥ 1,000 MPa, de préférence de ≥ 3,000 MPa (méga-pascal), une résistance à la flexion alternée de ≥ 10 MPa, de préférence de ≥ 30 MPa et une résilience à la température ambiante de 23 °C de ≥ 70 KJ/m2, de préférence de ≥ 130 KJ/m2 (kilojoule par mètre carré).
  5. Pompe à tuyaux péristaltique selon une des revendications 1 à 4, caractérisée en ce que cet étrier de pression (3) a une section d'entrée (5), une section centrale (6) et une section de sortie (7), dans laquelle au moins cette section de sortie (7), de préférence aussi cette section d'entrée (5), a une section en coupe supérieure à celle de cette section centrale (6), de préférence une épaisseur supérieure dans les directions orthogonales à cette surface de support.
  6. Pompe à tuyaux péristaltique selon une des revendications 1 à 5, caractérisée en ce que cette section centrale (6), par rapport à cet axe de rotation D de la roue à rouleaux, s'étend sur un angle de 10° à 90°, de préférence de 20° à 60°.
  7. Pompe à tuyaux péristaltique selon une des revendications 1 à 6, caractérisée en ce que cet étrier de pression (3), par rapport à cet axe de rotation D de la roue à rouleaux, s'étend sur un angle de 90° à 180°, de préférence de 120° à 170°.
  8. Pompe à tuyaux péristaltique selon une des revendications 1 à 7, caractérisée en ce que cet étrier de pression (3) est logé à une première extrémité sur un pivot (8) prévu stationnairement à la pompe à tuyaux (20, 21) et parallèlement à cet axe de rotation (D) de cette roue à rouleaux (1), et est pivotable à sa deuxième extrémité au moyen d'un dispositif de serrage (9) entre une position de montage du tuyau et une position de marche.
  9. Pompe à tuyaux péristaltique selon une des revendications 1 à 8, caractérisée en ce que ce dispositif de serrage (9) comprend une goupille de serrage (10) prévue à la deuxième extrémité de cet étrier de pression et une plaque de fermeture (13) rotative autour d'un axe de rotation de serrage S en parallèle à cet axe de rotation (D) de cette roue à rouleaux (1), ladite plaque de fermeture (13) interagissant avec cette goupille de serrage (10) de sorte que, si cette plaque de fermeture (13) est tournée à partir de cette position de montage (I) du tuyau dans cette position de marche (II), cette goupille de serrage (10) soit pressée à partir d'un premier cran (26) dans un deuxième cran (27) d'un disque de serrage (24).
  10. Pompe à tuyaux péristaltique selon une des revendications 1 à 9, caractérisée en ce que dans cette position de marche (II), cette plaque de fermeture (13) recouvre au front cette roue à rouleaux (1) et ce tuyau (19) inséré là-dedans et donc de préférence fixe ce tuyau (19) en direction de cet axe de rotation (D) de cette roue à rouleaux (1).
  11. Pompe à tuyaux péristaltique selon une des revendications 1 à 10, caractérisée en ce que dans cette position de marche (II), cette plaque de fermeture (13) est encliquetable par adhérence.
  12. Pompe à tuyaux péristaltique selon une des revendications 1 à 11, caractérisée en ce que cette roue à rouleaux (1) et/ou cet étrier de pression (3) sont échangeables.
  13. Pompe à tuyaux péristaltique selon une des revendications 1 à 12, caractérisée en ce que cette roue à rouleaux (1) et/ou cet étrier de pression (3) peuvent être choisis par rapport à la différence des rayons R2 - R1 de sorte que dans cette position de montage (I), un tuyau (19) défini ayant un diamètre extérieur inférieur à R2 - R1 soit insérable.
  14. Pompe à tuyaux péristaltique selon une des revendications 1 à 13, caractérisée en ce que cette roue à rouleaux (1) et/ou cet étrier de pression (3) peuvent être choisis par rapport à la différence des rayons R2 - R1 de sorte qu'un tuyau (19) défini ayant une épaisseur de la paroi inférieure à (R2-R1)/2 puisse être utilisé.
EP01995604A 2000-12-12 2001-12-10 Pompe tubulaire peristaltique Expired - Lifetime EP1342011B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10062600A DE10062600C2 (de) 2000-12-12 2000-12-12 Peristaltische Schlauchpumpe
DE10062600 2000-12-12
PCT/DE2001/004725 WO2002048549A1 (fr) 2000-12-12 2001-12-10 Pompe tubulaire peristaltique

Publications (2)

Publication Number Publication Date
EP1342011A1 EP1342011A1 (fr) 2003-09-10
EP1342011B1 true EP1342011B1 (fr) 2006-10-11

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Family Applications (1)

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EP01995604A Expired - Lifetime EP1342011B1 (fr) 2000-12-12 2001-12-10 Pompe tubulaire peristaltique

Country Status (6)

Country Link
US (1) US7287968B2 (fr)
EP (1) EP1342011B1 (fr)
AT (1) ATE342443T1 (fr)
AU (1) AU2002226297A1 (fr)
DE (2) DE10062600C2 (fr)
WO (1) WO2002048549A1 (fr)

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US20040037724A1 (en) 2004-02-26
DE50111227D1 (de) 2006-11-23
DE10062600A1 (de) 2002-06-20
ATE342443T1 (de) 2006-11-15
US7287968B2 (en) 2007-10-30
AU2002226297A1 (en) 2002-06-24
WO2002048549A1 (fr) 2002-06-20
DE10062600C2 (de) 2002-12-05
EP1342011A1 (fr) 2003-09-10

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