EP2536952A1 - Safety device for a peristaltic pump - Google Patents

Safety device for a peristaltic pump

Info

Publication number
EP2536952A1
EP2536952A1 EP11704232A EP11704232A EP2536952A1 EP 2536952 A1 EP2536952 A1 EP 2536952A1 EP 11704232 A EP11704232 A EP 11704232A EP 11704232 A EP11704232 A EP 11704232A EP 2536952 A1 EP2536952 A1 EP 2536952A1
Authority
EP
European Patent Office
Prior art keywords
rotor
roller pump
pump according
hose
marking
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
EP11704232A
Other languages
German (de)
French (fr)
Other versions
EP2536952B1 (en
Inventor
Thomas NÜRNBERGER
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.)
Fresenius Medical Care Deutschland GmbH
Original Assignee
Fresenius Medical Care Deutschland 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 Fresenius Medical Care Deutschland GmbH filed Critical Fresenius Medical Care Deutschland GmbH
Publication of EP2536952A1 publication Critical patent/EP2536952A1/en
Application granted granted Critical
Publication of EP2536952B1 publication Critical patent/EP2536952B1/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
    • 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
    • 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
    • F04B43/1261—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 the rollers being placed at the outside of 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/10—Other safety measures

Definitions

  • the invention relates to a hose roller pump with interchangeable rotors, in particular for a dialysis.
  • Hose roller pumps are used for the occlusive pumping of liquids and are often used for example in laboratories, Kleinprodu ctionsanlagen, analyzers, infusion pumps and in particular in dialysis. They have a stator and a rotor revolving therein with at least two squeezing rollers, which occlude a delivery hose inserted between the stator and the rotor and thus drive a liquid present in the delivery hose.
  • hose roller pumps it is usually possible to separate the rotor, for example, for the purpose of cleaning, repair or replacement of the rotor to adapt to different tube materials, diameters and / or wall thicknesses of the rotor mount, for example, the pressure springs for the squeezing rollers of the rotor or to replace the rotor with another rotor design.
  • many hose reel pumps particularly those used in laboratories, small scale production facilities, analyzers and dialyzers, have multiple conveyors with interchangeable rotors, however can have different properties. These properties may depend, for example, on the delivery hoses used, other components in the delivery flow of the hose roller pump, the viscosity of the medium to be delivered, the desired delivery pressures and other parameters.
  • the pinch rollers of the rotor can be mounted resiliently perpendicular to the direction of rotation, so that they yield to a pressure building up in the hose.
  • the spring constant of the storage determines the maximum occlusion pressure and thus limits the delivery pressure of the hose roller pump. This can be technically realized, for example, by virtue of the fact that the rotor has two arms which can be displaced parallel to one another in a spring-like manner, at the ends of which the pinch rollers are rotatably mounted.
  • the spring constant of the rotors can be different, for example, in hose roller pumps for dialyzers for the pumped liquid, the inserted hose set with the delivery hose, other components used (such as filters, membranes, dialyzers, membranes and / or drip chambers) and the type of treatment.
  • the rotor of the hose roller pump of a dialysis device for the substituate solution can be equipped with a lower spring force, that is also with a lower maximum occlusion pressure, than, for example, the rotor of the blood pump.
  • the conveyors of the tube roller pumps are otherwise identical, so that each rotor can be inserted into each stator.
  • the rotors of the pumps are now removed from the stators to better effect the dialyzer and the rotors to be able to disinfect.
  • the rotors are usually provided in the prior art with stickers, but which can peel off over time. Even if the sticker is intact, there is a risk of human error when upgrading, if the label or marking on the stickers is not read correctly and therefore not on the inserted tube set, the components used (such as filters, membranes, dialyzers and / or drip chambers) and the type of treatment is adjusted.
  • a hose reel pump preferably for a dialysis device, is specified, having a rotor receptacle, a rotor which, with the rotor receptacle, can, and preferably, comprises a marking device, by the nature of which and / or arranging at least one characteristic of the rotor, and a safety device having at least one detection device, by means of which the at least one characteristic of the rotor coded by the marking device (s) can be controlled, wherein the Safety device can be activated depending on at least one of these properties of the rotor.
  • a hose reel pump as set forth in claim 1, it is possible to automatically control, for example, the rotor type or setting of the rotor or at least one property of the rotor mounted in a conveyor of the hose roller pump by means of the at least one detecting device of the safety device and in case a faulty upgrade to activate the safety device and thus trigger a suitable action.
  • Another conceivable possibility would be, for example, to attach such a detection device to an adjusting element of the pressure spring, whereby the detection of the position of this detection device can be used to automatically control the initial tension and thus the pressing force of the adjusting spring and thus the occlusion pressure. Even in routine operation by poorly trained personnel or in hectic hospital situations can be reliably ruled out a misadministration of the conveyors.
  • the tube roller pump when the tube roller pump is put into operation with a rotor having incorrect or unsuitable properties, the tube roller pump can be deactivated by the safety device and / or a warning signal can be triggered.
  • the safety device when the tube roller pump is put into operation with a rotor having incorrect or unsuitable properties, the tube roller pump can be deactivated by the safety device and / or a warning signal can be triggered.
  • a rotor with incorrect or unsuitable properties is understood to mean a rotor which does not comply with the requirements of the particular application with respect to its type, its setting (in the case of a rotor with adjustable pressure force, for example) or at least one rotor characteristic.
  • the actual value of the at least one property of the rotor is not the same for the operating conditions required or optimal setpoint coincides, or that the actual value of the at least one property of the rotor is not within a predetermined value range for the operating conditions.
  • the marking device (s) may be arranged with respect to the rotor so that it is guided past the at least one detection device during rotation of the rotor and thereby a signal pattern is generated by the at least one detection device, through which the at least one property of the rotor can be detected.
  • the signal pattern of the at least one detection device can be evaluated with a rotational speed signal from a hose roller pump drive.
  • a drive signal of a stepping motor, a motor-own one, for example generated by the commutator, or a separate speedometer or a speed signal, or any other rotational speed signal can be used as the rotational speed signal.
  • each of the marking devices can be detected by at least two detection devices at each revolution. This represents a further possibility for, for example, determining the rotational speed of the rotor and detecting precisely or independently the speed of rotation of a wedge between two marking devices or detecting the extension of a marking device, and to differentiate between different dimensions of marking devices.
  • the speed and / or direction of rotation of the rotor can also be determined from the signal pattern of the at least one detection device. If, for example, only one marking device or only one marking device of a certain type or several marking devices is distributed over a rotation angle range of less than 180 ° in a certain distance from the rotation axis, the same detection devices can be used for the detection and control of the at least one property of Rotor are responsible, g leichzeitig also the rotational speed and, if appropriate arrangement of the marking devices also detect the direction of rotation of the rotor.
  • the marking device (s) can be detected without contact magnetically, electromagnetically and / or optically. This ensures a particularly reliable and trouble-free operation and a similar detection of the marking devices.
  • At least one of the detection devices may comprise a magnetic field sensor, preferably a Hall sensor.
  • a magnetic field sensor preferably a Hall sensor.
  • At least one of the detection devices may comprise a preferably electromagnetic or inductive proximity sensor.
  • a preferably electromagnetic or inductive proximity sensor For example, by induction of eddy currents, tuning circuit by changing the inductance, but also by capacitance change or optical measurements (IR reflectivity changes), the marking devices can be detected easily and reliably.
  • At least one marking device may comprise a transponder device.
  • This transponder device can preferably be an RFID transponder ("Radio Frequency / Dentification" transponder) or RFID chip, thereby enabling a plurality or a multiplicity of information from the rotor to be reliably and inexpensively transmitted by a single marking device
  • RFID transponder Radio Frequency / Dentification
  • RFID chip thereby enabling a plurality or a multiplicity of information from the rotor to be reliably and inexpensively transmitted by a single marking device
  • the marking device (s) can be arranged at different distances from the axis of rotation of the rotor receptacle.
  • the number of coding options for example, for properties of the rotor or other information such as speed and / or direction of rotation can be easily expanded.
  • the marking devices can be arranged more advantageous even with narrow rotor arms and the detection accuracy can be increased even with simple and inexpensive detection devices.
  • the at least one property of the rotor taking into account properties of other components - in particular of hoses, filter, membrane devices, dialyzers and / or further rotors and / or work programs and / or other data - in particular treatment and / or patient data - are evaluated.
  • a large number of parameters relevant to the correct selection of the rotor can be taken into account, thus ensuring maximum safety and flexibility.
  • Treatment and / or patient data could, for example, be read out and transferred from a computer system, possibly in alignment with a patient chip card or another identification or storage system. It would also be conceivable to read data from a barcode of a patient file or index card in order to take into account, for example, patient data, information about the course of treatment, type of dialysis, replacement membranes used, ultrafiltration fluid, substituate solution, flow rates, treatment durations. This could possibly lead to the entire programming and control of the dialysis machine being made automatable.
  • FIG. 1 is a schematic representation of a rotating in a stator rotor of a conveyor of a hose roller pump
  • FIG. 1 shows the schematic representation of a rotor (2) revolving in a stator (1) of a conveying device of a hose roller pump.
  • the rotor (2) sits (releasably connected) on the rotor (2) bearing rotor receptacle which rotates about the axis of rotation (3) and drives the rotor (2).
  • the rotor (2) has two substantially radially displaceable rotor rolls (5) provided with pinch rollers (or pressure rollers) on one side and having a defined spring force of a spring (not shown here) in the direction of the pinch rollers (4).
  • the conveying hose which is likewise not shown here, lies against the inside of the wall of the stator (1) and is occluded by the spring-loaded squeezing rollers (4), thus driving and conveying a liquid in the conveying hose in a known manner.
  • a total of 2 x 2 x 3 12 marking holes or Markseintiefept (6, 7), which can accommodate marking devices and by casting with a potting compound permanently hermetically sealed.
  • marking indentations (6) contain as marking devices electrically conductive metal plates or inlays (eg copper, iron or aluminum plates; black filled circles), other marking indentations (7) contain no marking devices (open circles).
  • the metal plates are periodically brought into the magnetic field of the proximity sensors (8, 9, 10).
  • eddy currents are induced in the metal plates moving in the magnetic field, energy being withdrawn from the magnetic field, which in turn can be detected in the power consumption of the proximity sensors (8, 9, 10).
  • the number and the geometric distribution of the electrically conductive plates can now code different features of the rotor (2).
  • the signal S3 in the transient signal curve shown below serves to detect the rotor revolutions, wherein in FIG. 2 the rising edge of the sensor signals is triggered.
  • S1 and S2 encode in their transient course a relevant feature of the rotor.
  • the number of sensors and metal plates in Figure 1 are arbitrary.
  • each rotor is equipped with at least one magnet for detecting the direction of rotation.
  • the direction of rotation is detected.
  • the width of the magnet can be determined by a Hall sensor.
  • a specific simplified embodiment results if the pump drive has a tachometer output that generates a fixed number of pulses per rotor revolution.
  • the number of tacho-pulses changes when the magnet passes over and can thus be used to detect the magnet width.
  • the rotor 1 has a wider magnet in the rotor than the rotor 2 and can be detected by detecting the number of Tachopulse when driving over the magnet.
  • the monitoring of the rotors can be active during the entire running time of the machine, depending on the selected treatment method. It makes sense, however, immediately after the upgrade, ie, for example, when filling the hose system, the test is performed. In this way, the user can then on time before the start of treatment on be pointed out a loading of the conveyor with a wrong or unsuitable rotor.

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

Abstract

A peristaltic pump, preferably for a dialysis device, has a rotor receptacle and has a rotor which can be connected to the rotor receptacle. Said rotor has preferably a multiplicity of marking devices, the type and/or arrangement of which serve(s) to encode at least one characteristic of the rotor. The peristaltic pump furthermore has a safety device with at least one sensing device by means of which the at least one characteristic of the rotor encoded by means of the marking device(s) can be checked, and which can be activated as a function of at least one of said characteristics of the rotor.

Description

Sicherheitseinrichtung für eine Schlauchrollenpumpe  Safety device for a hose roller pump
Beschreibung: Description:
Gebiet der Erfindung: Field of the invention:
Die Erfindung bezieht sich auf eine Schlauchrollenpumpe mit auswechselbaren Rotoren, insbesondere für eine Dialysiereinrichtung.  The invention relates to a hose roller pump with interchangeable rotors, in particular for a dialysis.
Stand der Technik: State of the art:
Schlauchrollenpumpen dienen zum okkludierenden Fördern von Flüssigkeiten und werden beispielsweise häufig in Laboratorien, Kleinprodu ktionsanlagen, Analysegeräten, Infusionspumpen und insbesondere auch in Dialysiereinrichtungen eingesetzt. Sie besitzen einen Stator und einen darin umlaufenden Rotor mit mindestens zwei Quetschrollen, die einen zwischen Stator und Rotor eingelegten Förderschlauch okkludieren und so eine im Förderschlauch befindliche Flüssigkeit antreiben.  Hose roller pumps are used for the occlusive pumping of liquids and are often used for example in laboratories, Kleinprodu ctionsanlagen, analyzers, infusion pumps and in particular in dialysis. They have a stator and a rotor revolving therein with at least two squeezing rollers, which occlude a delivery hose inserted between the stator and the rotor and thus drive a liquid present in the delivery hose.
Bei derartigen Schlauchrollenpumpen ist es in der Regel möglich, den Rotor beispielsweise zum Zwecke von Reinigung, Reparatur oder zum Austausch des Rotors zur Anpassung an verschiedene Schlauchmaterialien, -durchmesser und/oder -Wandstärken von der Rotoraufnahme zu trennen, um beispielsweise die Andruckfedern für die Quetschrollen des Rotors einzustellen oder den Rotor gegen eine andere Rotorausführung auszutauschen. Zudem besitzen viele Schlauchrollenpumpen - i nsbesond ere solche, d ie i n Laboratorien , Kleinproduktionsanlagen, Analysegeräten und Dialysiereinrichtungen zum Einsatz kommen, mehrere Fördereinrichtungen mit untereinander austauschbaren Rotoren, die jedoch unterschiedliche Eigenschaften besitzen können. Diese Eigenschaften können beispielsweise von den eingesetzten Förderschläuchen, weiteren Bauteilen im Förderstrom der Schlauchrollenpumpe, der Viskosität des zu fördernden Mediums, den gewünschten Förderdrücken und anderen Parametern abhängen. In such hose roller pumps, it is usually possible to separate the rotor, for example, for the purpose of cleaning, repair or replacement of the rotor to adapt to different tube materials, diameters and / or wall thicknesses of the rotor mount, for example, the pressure springs for the squeezing rollers of the rotor or to replace the rotor with another rotor design. In addition, many hose reel pumps, particularly those used in laboratories, small scale production facilities, analyzers and dialyzers, have multiple conveyors with interchangeable rotors, however can have different properties. These properties may depend, for example, on the delivery hoses used, other components in the delivery flow of the hose roller pump, the viscosity of the medium to be delivered, the desired delivery pressures and other parameters.
Bei einem Verschluss des Schlauches oder einem Anstieg des Durchgangswiderstands stromabwärts der Pumpe steigt der Druck im Schlauch bei weiterem Betrieb der Schlauchrollenpumpe sehr schnell an und würde ohne weitere Sicherungsvorkehrungen unweigerlich zu Beschädigungen des Schlauches oder von mit dem Schlauch verbundenen weiteren Bauteilen, wie Filtern, Membranen, Dialysatoren oder Tropf kammern, führen. With a closure of the tube or an increase in the volume resistance downstream of the pump, the pressure in the hose increases very rapidly with further operation of the hose roller pump and would inevitably without further security precautions to damage the hose or other components connected to the hose, such as filters, membranes, Dialyzers or drip chambers lead.
Um solchen Beschädigungen entgegenzuwirken, können beispielsweise die Quetschrollen des Rotors senkrecht zur Drehrichtung federnd gelagert sein, so dass sie einem sich im Schlauch aufbauenden Druck nachgeben. Die Federkonstante der Lagerung bestimmt hierbei den maximalen Okklusionsdruck und begrenzt damit den Förderdruck der Schlauchrollenpumpe. Dies kann beispielsweise dadurch technisch realisiert werden, dass der Rotor zwei zueinander parallel federnd verschiebbare Arme aufweist, an deren Enden die Quetschrollen drehbar gelagert sind. Die Federkonstante der Rotoren kann beispielsweise bei Schlauchrollenpumpen für Dialysiereinrichtungen für die gepumpte Flüssigkeit, das eingelegte Schlauchset mit dem Förderschlauch, weitere verwendete Bauteile (wie Filter, Membranen, Dialysatoren, Membranen und/oder Tropfkammern) und die Behandlungsart unterschiedlich sein. So kann beispielsweise der Rotor der Schlauchrollenpumpe einer Dialysiereinrichtung für die Substituatlösung mit geringerer Federkraft, also auch mit geringerem maximalem Okklusionsdruck, ausgestattet sein, als beispielsweise der Rotor der Blutpumpe. Konstruktiv sind die Fördereinrichtungen der Schlauchrollenpumpen ansonsten aber identisch, so dass jeder Rotor in jeden Stator eingelegt werden kann. Bei der Reinigung und Desinfektion der Dialysiereinrichtung werden nun die Rotoren der Pumpen aus den Statoren entfernt, um die Dialysiereinrichtung u nd die Rotoren besser desinfizieren zu können. Um die Statoren identifizieren zu können und den richtigen Rotor in die jeweilige Fördereinrichtung einbauen zu können, sind die Rotoren nach dem Stand der Technik üblicherweise mit Aufklebern versehen, die sich jedoch im Laufe der Zeit ablösen können. Selbst bei intaktem Aufkleber besteht die Gefahr von menschlichen Fehlern bei der Aufrüstung, wenn die Beschriftung oder Markierung auf den Aufklebern nicht richtig gelesen und deshalb beispielsweise nicht an das eingelegte Schlauchset, die verwendeten Bauteile (wie Filter, Membranen, Dialysatoren und/oder Tropfkammern) und die Behandlungsart angepasst wird. Es besteht somit die Gefahr, dass nach erfolgter Desinfizierung des Gerätes Rotoren verwechselt werden, also beispielsweise Rotoren mit falscher Rollenfederkraft in die jeweilige Fördereinrichtung eingelegt werden, oder beispielsweise beim Wechsel der Behandlungsart der Austausch der Rotoren vergessen wird. Hierdurch kann es nicht nur zur Beschädigung von Bauteilen der Dialysiereinrichtungen, sondern auch zu schlechten Behandlungsergebnissen und zur Gefährdung von Gesundheit oder Leben der Patienten kommen. In order to counteract such damage, for example, the pinch rollers of the rotor can be mounted resiliently perpendicular to the direction of rotation, so that they yield to a pressure building up in the hose. The spring constant of the storage determines the maximum occlusion pressure and thus limits the delivery pressure of the hose roller pump. This can be technically realized, for example, by virtue of the fact that the rotor has two arms which can be displaced parallel to one another in a spring-like manner, at the ends of which the pinch rollers are rotatably mounted. The spring constant of the rotors can be different, for example, in hose roller pumps for dialyzers for the pumped liquid, the inserted hose set with the delivery hose, other components used (such as filters, membranes, dialyzers, membranes and / or drip chambers) and the type of treatment. Thus, for example, the rotor of the hose roller pump of a dialysis device for the substituate solution can be equipped with a lower spring force, that is also with a lower maximum occlusion pressure, than, for example, the rotor of the blood pump. Constructively, the conveyors of the tube roller pumps are otherwise identical, so that each rotor can be inserted into each stator. During the cleaning and disinfection of the dialysis device, the rotors of the pumps are now removed from the stators to better effect the dialyzer and the rotors to be able to disinfect. In order to identify the stators and to install the right rotor in the respective conveyor, the rotors are usually provided in the prior art with stickers, but which can peel off over time. Even if the sticker is intact, there is a risk of human error when upgrading, if the label or marking on the stickers is not read correctly and therefore not on the inserted tube set, the components used (such as filters, membranes, dialyzers and / or drip chambers) and the type of treatment is adjusted. There is thus the risk that after disinfection of the device rotors are confused, so for example rotors are loaded with wrong roller spring force in the respective conveyor, or forgotten, for example, when changing the type of treatment, the replacement of the rotors. This can lead not only to the damage of components of the dialysis, but also to poor treatment results and endangerment of health or life of the patient.
Offenbarung der Erfindung: Disclosure of the invention:
Es ist som it Aufgabe d er vorl ieg end en E rfi nd u ng , d ie korrekte Bestü cku ng d er Dialysiereinrichtung mit Rotoren des richtigen Typs und insbesondere der richtigen Federkraft in der jeweiligen Fördereinrichtung sicherzustellen und eine Fehlaufrüstung der Dialysiereinrichtung unter allen Umständen zuverlässig auszuschließen.  It is therefore an object of the invention to ensure the correct assembly of the dialyzer with rotors of the correct type and in particular the correct spring force in the respective conveyor, and reliable upgrade of the dialyzer under all circumstances excluded.
Diese Aufgabe wird erfindungsgemäß durch eine Schlauchrollenpumpe gemäß Anspruch 1 gelöst. Bevorzugte Ausführungsformen sind in den Unteransprüchen angegeben. Gemäß vorliegender Erfindung wird eine Schlauchrollenpumpe, vorzugsweise für eine Dialysiereinrichtung, angegeben, mit einer Rotoraufnahme , einem Rotor, der mit der Rotoraufnah m e ve rbu nd e n we rd en kan n u nd vorzugsweise e i n e M e h rza h l vo n Markierungsvorrichtungen aufweist, durch deren Art und/oder Anordnung mindestens eine Eigenschaft des Rotors kodiert ist, und einer Sicherheitseinrichtung mit mindestens einer Erfassungsvorrichtung, mittels welcher die durch die Markierungsvorrichtung(en) kodierte mindestens eine Eigenschaft des Rotors kontrolliert werden kann, wobei die Sicherheitseinrichtung in Abhängigkeit von mindestens einer dieser Eigenschaften des Rotors aktiviert werden kann. This object is achieved by a hose reel pump according to claim 1. Preferred embodiments are specified in the subclaims. According to the present invention, a hose reel pump, preferably for a dialysis device, is specified, having a rotor receptacle, a rotor which, with the rotor receptacle, can, and preferably, comprises a marking device, by the nature of which and / or arranging at least one characteristic of the rotor, and a safety device having at least one detection device, by means of which the at least one characteristic of the rotor coded by the marking device (s) can be controlled, wherein the Safety device can be activated depending on at least one of these properties of the rotor.
Durch eine solche Schlauchrollenpumpe, wie sie in Anspruch 1 angegeben ist, ist es möglich, beispielsweise den Rotortyp oder eine Einstellung des Rotors oder zumindest eine Eigenschaft des in einer Fördereinrichtung der Schlauchrollenpumpe montierten Rotors mittels der mindestens einen Erfassungsvorrichtung der Sicherheitseinrichtung automatisch zu kontrollieren und im Falle einer Fehlaufrüstung die Sicherheitseinrichtung zu aktivieren und so eine geeignete Aktion auszulösen. Zusätzlich ist es technisch leicht durchführbar, derartige Erfassungsvorrichtungen fest in den Rotor zu integrieren oder unverlierbar mit diesem zu verbinden. Eine andere vorstellbare Möglichkeit wäre es, beispielsweise eine solche Erfassungsvorrichtung an einem Einstellelement der Andruckfeder anzubringen, wobei über die Erfassu ng der Position dieser Erfassu ngsvorrichtu ng d ie Vorspannung u nd dam it d ie Andruckkraft der Einstellfeder und so der Okklusionsdruck automatisch kontrolliert werden kann. Auch im Routinebetrieb durch wenig geschultes Personal oder in hektischen Krankenhaussituationen kann so eine Fehlbestückung der Fördereinrichtungen zuverlässig ausgeschlossen werden. By such a hose reel pump as set forth in claim 1, it is possible to automatically control, for example, the rotor type or setting of the rotor or at least one property of the rotor mounted in a conveyor of the hose roller pump by means of the at least one detecting device of the safety device and in case a faulty upgrade to activate the safety device and thus trigger a suitable action. In addition, it is technically easy to integrate such detection devices firmly in the rotor or to connect captive with this. Another conceivable possibility would be, for example, to attach such a detection device to an adjusting element of the pressure spring, whereby the detection of the position of this detection device can be used to automatically control the initial tension and thus the pressing force of the adjusting spring and thus the occlusion pressure. Even in routine operation by poorly trained personnel or in hectic hospital situations can be reliably ruled out a misadministration of the conveyors.
In einer bevorzugten Ausführungsform kann bei Inbetriebnahme der Schlauchrollenpumpe mit einem Rotor mit falschen oder ungeeigneten Eigenschaften die Schlauchrollenpumpe durch die Sicherheitseinrichtung deaktivierbar und/oder ein Warnsignal auslösbar sein. Hierdurch ist es unmittelbar möglich - zusätzlich zu beispielsweise einer Beschränkung der Betriebszustände der Schlauchrollenpumpe auf ungefährliche Werte (z.B. lediglich Inbetriebnahme des Motors im Kriechbetrieb zur Entlüftung oder Testung des Systems) oder einer ebenfalls denkbaren Protokollierung der Rotorbestückung -, jeglichen Betrieb der Schlauchrollenpumpe beispielsweise nach einer oder wenigen Umdrehungen des Rotors zu verhindern. Dabei wird unter einem Rotor mit falschen oder ungeeigneten Eigenschaften ein Rotor verstanden, der hinsichtlich seines Typs , seiner Einstellu ng (im Falle beispielsweise eines Rotors m it verstellbarer Andruckkraft) oder mindestens einer Rotoreigenschaft nicht mit den Erfordernissen des jeweiligen Einsatzes übereinstimmt. So ist es beispielsweise möglich, dass der Istwert der mindestens einen Eigenschaft des Rotors nicht m it dem für die Betriebsbedingungen erforderlichen oder optimalen Sollwert übereinstimmt, oder dass der Istwert der mindestens einen Eigenschaft des Rotors nicht innerhalb eines für die Betriebsbedingungen vorgegebenen Sollwertbereiches liegt. Dabei ist es beispielsweise im Falle einer Schlauchrollenpumpe für eine Dialysiereinrichtung vorstellbar, dass im Hinblick auf die Betriebsbedingungen zusätzlich auch weitere Faktoren, wie die Betriebsart der Schlauchrollenpumpe, die Eigenschaften verwendeter Bauteile - insbesondere von Schläuchen, Filter-, Membranvorrichtungen und/oder weiteren Rotoren -, Arbeitsprogramme und/oder weiteren Daten - insbesondere Behandlungs- und/oder Patientendaten - berücksichtigt werden. Hierdurch kann ein Maximum an Sicherheit gewährleistet werden. In a preferred embodiment, when the tube roller pump is put into operation with a rotor having incorrect or unsuitable properties, the tube roller pump can be deactivated by the safety device and / or a warning signal can be triggered. This makes it immediately possible - in addition to, for example, a limitation of the operating conditions of the hose reel pump to safe values (eg only commissioning of the engine in creep mode for venting or testing of the system) or a likewise conceivable logging of the rotor assembly - any operation of the hose reel pump, for example after one or to prevent a few revolutions of the rotor. In this case, a rotor with incorrect or unsuitable properties is understood to mean a rotor which does not comply with the requirements of the particular application with respect to its type, its setting (in the case of a rotor with adjustable pressure force, for example) or at least one rotor characteristic. For example, it is possible that the actual value of the at least one property of the rotor is not the same for the operating conditions required or optimal setpoint coincides, or that the actual value of the at least one property of the rotor is not within a predetermined value range for the operating conditions. It is conceivable, for example, in the case of a hose roller pump for a dialysis, that in view of the operating conditions in addition also other factors, such as the mode of the hose roller pump, the properties of used components - especially of hoses, filters, membrane devices and / or other rotors - Work programs and / or other data - especially treatment and / or patient data - be considered. As a result, a maximum of security can be ensured.
In einer weiteren bevorzugten Ausführungsform kann/können die Markierungsvorrichtung(en) derart bzgl. des Rotors angeordnet sein, dass diese bei Drehung des Rotors an der mindestens einen Erfassungsvorrichtung vorbeigeführt wird/werden und hierdurch ein Signalmuster durch die mindestens eine Erfassungsvorrichtung erzeugt wird, durch welches die mindestens eine Eigenschaft des Rotors detektiert werden kann. Dies stellt eine technisch besonders vorteilhafte Weiterbildung der Schlauchrollenpumpe dar, bei der unter Rückgriff auf wenige einfache, zuverlässige Sensoren (ohne beispielsweise den Einsatz bildgebender Verfahren oder Mustererkennung) die mindestens eine Eigenschaft des Rotors detektiert werden kann. Bereits nach einer oder wenigen Umdrehungen des Rotors kann dabei im Falle einer Fehlbestückung die Sicherheitseinrichtung ausgelöst und der Weiterbetrieb der Schlauchrollenpumpe so frühzeitig unterbunden werden. In a further preferred embodiment, the marking device (s) may be arranged with respect to the rotor so that it is guided past the at least one detection device during rotation of the rotor and thereby a signal pattern is generated by the at least one detection device, through which the at least one property of the rotor can be detected. This represents a technically particularly advantageous development of the tube roller pump, in which, with recourse to a few simple, reliable sensors (without, for example, the use of imaging methods or pattern recognition), the at least one property of the rotor can be detected. After just one or a few revolutions of the rotor, the safety device can be triggered in the event of incorrect assembly and the continued operation of the hose roller pump can be prevented as early as possible.
In einer weiteren bevorzugten Ausführungsform kann das Signalmuster der mindestens einen Erfassungsvorrichtu ng u nter Verrechnu ng mit einem Drehgeschwindigkeitssig nal eines Schlauchrollenpumpenantriebs ausgewertet werden. Als Drehgeschwindigkeitssignal kann dabei ein Ansteuersignal eines Schrittmotors, ein motoreigenes, z.B. durch den Kommutator erzeugtes od er d u rch einen separaten Tachog eber g eneriertes Tachos ig nal, ein Generatorsignal oder jedes andere Drehgeschwindigkeitssignal zur Anwendung kommen. Hierdurch ist es möglich, beispielsweise den Winkelabstand zwischen zwei Markierungsvorrichtungen drehzahlunabhängig präzise zu erfassen oder die Erstreckung einer Markierungsvorrichtung zu erkennen und so zwischen verschiedenen Abmessungen von Markierungsvorrichtungen zu differenzieren. In a further preferred embodiment, the signal pattern of the at least one detection device can be evaluated with a rotational speed signal from a hose roller pump drive. In this case, a drive signal of a stepping motor, a motor-own one, for example generated by the commutator, or a separate speedometer or a speed signal, or any other rotational speed signal, can be used as the rotational speed signal. This makes it possible, for example, the angular distance between two marking devices independent of speed to detect precisely or the extension of a To detect marking device and to differentiate between different dimensions of marking devices.
In einer weiteren bevorzugten Ausführungsform kann jede der Markierungsvorrichtungen bei jeder Umdrehung durch mindestens zwei Erfassungsvorrichtungen erfasst werden. Dies stellt eine weitere Möglichkeit dar, um beispielsweise die Rotationsgeschwindigkeit des Rotors zu bestimmen u nd h ie rd u rch be is pi e lswe is e d e n Wi n kelabsta nd zwisch e n zwe i Markierungsvorrichtungen drehzahlunabhängig präzise zu erfassen oder die Erstreckung einer Markierungsvorrichtung zu erkennen und so zwischen verschiedenen Abessungen von Markierungsvorrichtungen zu differenzieren. In a further preferred embodiment, each of the marking devices can be detected by at least two detection devices at each revolution. This represents a further possibility for, for example, determining the rotational speed of the rotor and detecting precisely or independently the speed of rotation of a wedge between two marking devices or detecting the extension of a marking device, and to differentiate between different dimensions of marking devices.
In einer weiteren bevorzugten Ausführungsform kann aus dem Signalmuster der mindestens einen Erfassungsvorrichtung außerdem Drehzahl und/oder Drehrichtung des Rotors bestimmt werden. Ist i n ei nem bestimmten Abstand zur Drehachse beispielsweise lediglich eine Markierungsvorrichtung oder lediglich eine Markierungsvorrichtung einer bestimmten Art oder mehrere Markierungsvorrichtungen über einen Drehwinkelbereich von weniger als 180° verteilt, so lässt sich mit denselben Erfassungsvorrichtungen, die für die Detektion und Kontrolle der mindestens einen Eigenschaft des Rotors verantwortlich sind , g leichzeitig auch die Drehgeschwindigkeit und ggf. bei geeigneter Anordnung der Markierungsvorrichtungen auch die Drehrichtung des Rotors miterfassen. In a further preferred embodiment, the speed and / or direction of rotation of the rotor can also be determined from the signal pattern of the at least one detection device. If, for example, only one marking device or only one marking device of a certain type or several marking devices is distributed over a rotation angle range of less than 180 ° in a certain distance from the rotation axis, the same detection devices can be used for the detection and control of the at least one property of Rotor are responsible, g leichzeitig also the rotational speed and, if appropriate arrangement of the marking devices also detect the direction of rotation of the rotor.
In einer weiteren bevorzugten Ausführungsform kann/können die Markierungsvorrichtung(en) berührungsfrei magnetisch, elektromagnetisch und/oder optisch detektiert werden. Hierdurch lässt sich ein besonders zuverlässiger und störungsfreier Betrieb und eine ebensolche Erfassung der Markierungsvorrichtungen sicherstellen. In a further preferred embodiment, the marking device (s) can be detected without contact magnetically, electromagnetically and / or optically. This ensures a particularly reliable and trouble-free operation and a similar detection of the marking devices.
In einer weiteren bevorzugten Ausführungsform kann mindestens e i n e d er Erfassungsvorrichtungen einen Magnetfeldsensor, vorzugsweise einen Hall-Sensor, aufweisen. Dies stellt eine besonders vorteilhafte und zuverlässige Ausführungsform für eine Erfassungsvorrichtung dar, die feuchtigkeits- und verschmutzungsunabhängig arbeitet und es beispielsweise erlaubt, als Markierungsvorrichtungen kleine Permanentmagnete am oder im Rotor anzubringen. In a further preferred embodiment, at least one of the detection devices may comprise a magnetic field sensor, preferably a Hall sensor. This represents a particularly advantageous and reliable embodiment for a detection device that operates moisture and pollution independent and it for example, allows to mount small permanent magnets on or in the rotor as marking devices.
I n e i n e r weiteren bevorzugten Ausführungsform kann mindestens eine der Erfassungsvorrichtungen einen vorzugsweise elektromagnetischen oder induktiven Näherungssensor aufweisen. Beispielsweise durch Induktion von Wirbelströmen, Schwingkreisverstimmung durch Änderung der Induktivität, aber auch durch Kapazitätsänderung oder optische Messungen (IR-Reflektivitätsänderungen) lassen sich die Markierungsvorrichtungen einfach und zuverlässig erfassen. In another preferred embodiment, at least one of the detection devices may comprise a preferably electromagnetic or inductive proximity sensor. For example, by induction of eddy currents, tuning circuit by changing the inductance, but also by capacitance change or optical measurements (IR reflectivity changes), the marking devices can be detected easily and reliably.
In einer weiteren bevorzugten Ausführungsform kann mindestens eine Markierungsvorrichtung eine Transpondervorrichtung aufweisen. Bei dieser Transpondervorrichtung kann es sich vorzugsweise um einen RFID Transponder („Radio-Frequency /Dentification" Transponder) oder RFID Chip handeln. Hierdurch lässt sich bereits durch eine einzige Markierungsvorrichtung eine Mehrzahl oder eine Vielzahl von Informationen des Rotors zuverlässig und kostengünstig übertragen. So ist es beispielsweise möglich, mehrere Eigenschaften (z.B. Okklusionsdruck, Eigenschaften der Andruckrolle (wie Breite, Ausformung, Material), Anzahl der Andruckrollen), aber auch zusätzlich eine individuelle Rotor ID oder Herstellungsdaten oder Betriebszeiten des Rotors abzuspeichern und auszulesen. In a further preferred embodiment, at least one marking device may comprise a transponder device. This transponder device can preferably be an RFID transponder ("Radio Frequency / Dentification" transponder) or RFID chip, thereby enabling a plurality or a multiplicity of information from the rotor to be reliably and inexpensively transmitted by a single marking device For example, it is possible to store and read out several properties (eg occlusion pressure, properties of the pressure roller (such as width, shape, material), number of pressure rollers), but also in addition an individual rotor ID or manufacturing data or operating times of the rotor.
In einer weiteren bevorzugten Ausführungsform kann/können die Markierungsvorrichtung(en) in unterschiedlichen Abständen zur Drehachse der Rotoraufnahme angeordnet sein. Hierdurch lässt sich auf einfache Weise die Anzahl der Codierungsmöglichkeiten beispielsweise für Eigenschaften des Rotors oder andere Informationen wie Drehzahl und/oder Drehrichtung erweitern. Zudem können so die Markierungsvorrichtungen auch bei schmalen Rotorarmen vorteilhafter angeordnet und die Erfassungsgenauigkeit auch mit einfachen und kostengünstigen Erfassungsvorrichtungen erhöht werden. In a further preferred embodiment, the marking device (s) can be arranged at different distances from the axis of rotation of the rotor receptacle. As a result, the number of coding options, for example, for properties of the rotor or other information such as speed and / or direction of rotation can be easily expanded. In addition, so the marking devices can be arranged more advantageous even with narrow rotor arms and the detection accuracy can be increased even with simple and inexpensive detection devices.
In einer weiteren bevorzugten Ausführungsform kann durch die Sicherheitseinrichtung die mindestens eine Eigenschaft des Rotors unter Berücksichtigung von Eigenschaften weiterer Bauteile - insbesondere von Schläuchen, Filter-, Membranvorrichtungen, Dialysatoren und/oder weiteren Rotoren - und/oder Arbeitsprogrammen und/oder weiteren Daten - insbesondere Behandlungs- und/oder Patientendaten - ausgewertet werden. Auf diese Weise kann eine Vielzahl von für die richtige Auswahl des Rotors relevanten Parametern berücksichtigt werden und so ein Maximum an Sicherheit und Flexibilität gewährleistet werden. So ist es beispielsweise technisch möglich, auch andere Bauteile, die im Flüssigkeitskreislauf des Dialysesystems angeordnet sind, ebenfalls durch geeignete Markierungsvorrichtungen zu kennzeichnen und automatisch zu erfassen; ebenso kann die Betriebsart der Dialysiereinrichtung berücksichtigt werden. Behandlungs- und/oder Patientendaten könnten beispielsweise aus einem Computersystem - ggf. unter Abgleich mit einer Patienten-Chipkarte oder einem anderen Identifizierungs- oder Speichersystem - ausgelesen und übertragen werden. Auch wäre es vorstellbar, Daten aus einem Barcode einer Patientenakte oder Karteikarte auszulesen, um hierdurch beispielsweise Patientendaten, Informationen über den Behandlungsverlauf, Art der Dialyse, eingesetzte Austauschmembranen, Ultrafiltrationsflüssigkeit, Substituatlösung, Durchflussraten, Behandlungsdauern zu berücksichtigen. Dies könnte u.U. dazu führen, dass die gesamte Programmierung und Kontrolle der Dialysiereinrichtung automatisierbar gemacht werden könnte. In a further preferred embodiment, by the safety device, the at least one property of the rotor taking into account properties of other components - in particular of hoses, filter, membrane devices, dialyzers and / or further rotors and / or work programs and / or other data - in particular treatment and / or patient data - are evaluated. In this way, a large number of parameters relevant to the correct selection of the rotor can be taken into account, thus ensuring maximum safety and flexibility. For example, it is technically possible to identify and automatically detect other components which are arranged in the fluid circuit of the dialysis system, likewise by means of suitable marking devices; likewise, the operating mode of the dialysis device can be taken into account. Treatment and / or patient data could, for example, be read out and transferred from a computer system, possibly in alignment with a patient chip card or another identification or storage system. It would also be conceivable to read data from a barcode of a patient file or index card in order to take into account, for example, patient data, information about the course of treatment, type of dialysis, replacement membranes used, ultrafiltration fluid, substituate solution, flow rates, treatment durations. This could possibly lead to the entire programming and control of the dialysis machine being made automatable.
Die Erfindung wird nicht durch die konkreten Ausführungsformen begrenzt; die Merkmale aller vorgenannten Ausführungsformen sind - soweit sie sich nicht gegenseitig technisch ausschließen oder negativ beeinträchtigen, frei miteinander kombinierbar. The invention is not limited by the specific embodiments; the features of all the aforementioned embodiments are - as far as they do not exclude each other technically or adversely affect freely combined with each other.
Beschreibung der Figuren: Description of the figures:
Anhand der Zeichnungen werden zwei Ausführungsbeispiele der Erfindung nachstehend eingehend erläutert. Es zeigen:  With reference to the drawings, two embodiments of the invention are explained in detail below. Show it:
Fig. 1 die schematische Darstellung eines in einem Stator umlaufenden Rotors einer Fördereinrichtung einer Schlauchrollenpumpe, 1 is a schematic representation of a rotating in a stator rotor of a conveyor of a hose roller pump,
Fig. 2 die schematische Darstellung der Signalverläufe von Näherungssensor Näherungssensor 2 und Näherungssensor 3, Fig. 3 die schematische Darstellung der Signalverläufe des Hall-Sensors in einem zweiten Ausführungsbeispiel, Figur 1 zeigt die schematische Darstellung eines in einem Stator (1 ) umlaufenden Rotors (2) einer Fördereinrichtung einer Schlauchrollenpumpe. Der Rotor (2) sitzt (lösbar verbunden) auf der den Rotor (2) tragenden Rotoraufnahme, die um die Drehachse (3) rotiert und den Rotor (2) antreibt. Der Rotor (2) besitzt zwei im Wesentlichen radial verschiebliche, einseitig mit Quetschrollen (oder Andruckrollen) ausgestattete und mit einer definierten Federkraft einer (hier nicht dargestellten) Feder in Richtung der Quetschrollen (4) beaufschlagte Rotorarme (5). Der hier ebenfalls nicht dargestellte Förderschlauch liegt innen an der Wandung des Stators (1) an und wird durch die federkraftbeaufschlagten Quetschrollen (4) okkludiert und so eine im Förderschlauch befindliche Flüssigkeit in bekannter Weise angetrieben und gefördert. In drei verschiedenen Abständen von der Drehachse (3) befinden sich beiderseits derselben auf beiden Abschnitten der zwei Rotorarme (4) insgesamt 2 x 2 x 3 = 12 Markierungsbohrungen oder Markierungseintiefungen (6, 7), die Markierungsvorrichtungen aufnehmen können und durch Vergießen mit einer Vergussmasse dauerhaft hermetisch verschlossen werden können. Einige dieser Markierungseintiefungen (6) enthalten als Markierungsvorrichtungen elektrisch leitfähige Metallplättchen oder Inlays (z.B. Kupfer-, Eisen- oder Aluminiumplättchen; schwarz gefüllte Kreise), andere Markierungseintiefungen (7) enthalten keine Markierungsvorrichtungen (offene Kreise). S1 , S2 und S3 (S = Sensor) symbolisieren induktive Näherungssensoren (8, 9, 10), die in der rückwärtigen Wand des Stators (1 ) nahe der Statoroberfläche angeordnet sind. 2 shows the schematic illustration of the signal profiles of proximity sensor proximity sensor 2 and proximity sensor 3, FIG. 1 shows the schematic representation of a rotor (2) revolving in a stator (1) of a conveying device of a hose roller pump. The rotor (2) sits (releasably connected) on the rotor (2) bearing rotor receptacle which rotates about the axis of rotation (3) and drives the rotor (2). The rotor (2) has two substantially radially displaceable rotor rolls (5) provided with pinch rollers (or pressure rollers) on one side and having a defined spring force of a spring (not shown here) in the direction of the pinch rollers (4). The conveying hose, which is likewise not shown here, lies against the inside of the wall of the stator (1) and is occluded by the spring-loaded squeezing rollers (4), thus driving and conveying a liquid in the conveying hose in a known manner. At three different distances from the axis of rotation (3) are on both sides thereof on both sections of the two rotor arms (4) a total of 2 x 2 x 3 = 12 marking holes or Markseintiefungen (6, 7), which can accommodate marking devices and by casting with a potting compound permanently hermetically sealed. Some of these marking indentations (6) contain as marking devices electrically conductive metal plates or inlays (eg copper, iron or aluminum plates; black filled circles), other marking indentations (7) contain no marking devices (open circles). S1, S2 and S3 (S = sensor) symbolize inductive proximity sensors (8, 9, 10), which are arranged in the rear wall of the stator (1) near the stator surface.
Durch die Rotation des Pumpenrotors werden die Metallplättchen periodisch in das Magnetfeld der Näherungssensoren (8, 9, 10) gebracht. Hierbei werden Wirbelströme in den sich im Magnetfeld bewegenden Metallplättchen induziert, wobei dem Magnetfeld Energie entzogen wird, was wiederum in der Leistungsaufnahme der Näherungssensoren (8, 9, 10) detektiert werden kann. Die Anzahl und die geometrische Verteilung der elektrisch leitfähigen Plättchen können nun verschieden Merkmale des Rotors (2) kodieren. Zudem ist es möglich, ein transientes Sensorsignal zur Detektion einer vollen Umdrehung zu nutzen und so die Umdrehungsgeschwindigkeit und die Zeit, in der die übrigen Sensorsignale vollständig anliegen, zu detektieren. In Figur 2 dient beispielsweise das Signal S3 im dort unten gezeigten transienten Signalverlauf dazu, die Rotorumdrehungen zu detektieren, wobei in Figur 2 auf die steigende Flanke der Sensorsignale getriggert wird. S1 und S2 kodieren in ihrem transienten Verlauf ein relevantes Merkmal des Rotors. Die Anzahl der Sensoren und der Metallplättchen in Figur 1 sind willkürlich gewählt. Due to the rotation of the pump rotor, the metal plates are periodically brought into the magnetic field of the proximity sensors (8, 9, 10). In this case, eddy currents are induced in the metal plates moving in the magnetic field, energy being withdrawn from the magnetic field, which in turn can be detected in the power consumption of the proximity sensors (8, 9, 10). The number and the geometric distribution of the electrically conductive plates can now code different features of the rotor (2). In addition, it is possible to use a transient sensor signal to detect a full revolution and thus to detect the rotational speed and the time in which the remaining sensor signals are completely applied. In FIG. 2, for example, the signal S3 in the transient signal curve shown below serves to detect the rotor revolutions, wherein in FIG. 2 the rising edge of the sensor signals is triggered. S1 and S2 encode in their transient course a relevant feature of the rotor. The number of sensors and metal plates in Figure 1 are arbitrary.
In einem anderen, nicht dargestellten Ausführungsbeispiel ist jeder Rotor mit mindestens einem Magneten zur Drehrichtungserkennung ausgestattet. Durch zwei hintereinander geschaltete Hall-Sensoren in der rückwärtigen Wand des Stators und der zeitlichen Auswertung, welcher der beiden Hall-Sensor den Magneten zuerst detektiert, wird die Rotationsrichtung erkannt. Bei konstanter Rotationsgeschwindigkeit kann durch einen Hall-Sensor die Breite des Magneten ermittelt werden. In another embodiment, not shown, each rotor is equipped with at least one magnet for detecting the direction of rotation. By two Hall sensors connected in series in the rear wall of the stator and the temporal evaluation, which detects the two Hall sensor first the magnet, the direction of rotation is detected. At constant rotation speed, the width of the magnet can be determined by a Hall sensor.
Eine spezielle vereinfachte Ausführungsform ergibt sich, sofern der Pumpenantrieb über einen Tachoausgang verfügt, der eine feste Anzahl an Pulsen pro Rotorumdrehung erzeugt. Bei unterschiedlich breiten Magneten verändert sich hier - wie in Figur 3 dargestellt - die Anzahl an Tachopulsen beim Überfahren des Magneten und kann so zum Detektieren der Magnetbreite herangezogen werden. A specific simplified embodiment results if the pump drive has a tachometer output that generates a fixed number of pulses per rotor revolution. In the case of magnets of different widths-as shown in FIG. 3-the number of tacho-pulses changes when the magnet passes over and can thus be used to detect the magnet width.
In dem Figur 3 zugrundeliegenden Ausführungsbeispiel verfügt der Rotor 1 über einen breiteren Magneten im Rotor als Rotor 2 und kann durch Erfassung der Anzahl der Tachopulse beim Überfahren des Magneten erkannt werden. In the embodiment underlying Figure 3, the rotor 1 has a wider magnet in the rotor than the rotor 2 and can be detected by detecting the number of Tachopulse when driving over the magnet.
Die Überwachung der Rotoren kann während der kompletten Laufzeit der Maschine, abhängig vom gewählten Behandlungsverfahren, aktiv sein. Sinnvollerweise wird jedoch unmittelbar nach dem Aufrüsten, d.h. beispielsweise beim Füllen des Schlauchsystems, die Prüfung durchgeführt. Auf diese Weise kann dann der Anwender rechtzeitig vor Behandlungsbeginn auf eine Bestückung der Fördereinrichtung mit einem falschen oder ungeeigneten Rotor hingewiesen werden. The monitoring of the rotors can be active during the entire running time of the machine, depending on the selected treatment method. It makes sense, however, immediately after the upgrade, ie, for example, when filling the hose system, the test is performed. In this way, the user can then on time before the start of treatment on be pointed out a loading of the conveyor with a wrong or unsuitable rotor.
Bezuqszeichenliste LIST OF REFERENCES
1. Stator 1st stator
2. Rotor  2nd rotor
3. Drehachse  3rd axis of rotation
4. Quetschrolle  4. squeezing roller
5. Rotorarm  5. Rotor arm
6. Markierungseintiefung mit Markierungsvorrichtung 6. Marking recess with marking device
7. Markierungseintiefung ohne Markierungsvorrichtung7. Marking recess without marking device
8. Näherungssensor S1 8. Proximity sensor S1
9. Näherungssensor S2  9. Proximity sensor S2
10. Näherungssensor S3  10. Proximity sensor S3

Claims

Patentansprüche: claims:
Schlauchrollenpumpe, vorzugsweise für eine Dialysiereinrichtung, aufweisend Hose roller pump, preferably for a dialyzer, comprising
eine Rotoraufnahme,  a rotor mount,
einen mit der Rotoraufnahme verbindbaren Rotor, der eine oder mehrere Markierungsvorrichtung(en) aufweist, durch deren Art und/oder Anordnung mindestens eine Eigenschaft des Rotors kodiert ist, und  a rotor which can be connected to the rotor receptacle and has one or more marking devices (s) whose type and / or arrangement encode at least one property of the rotor, and
eine Sicherheitseinrichtung mit mindestens einer Erfassungsvorrichtung, mittels welcher die durch die Markierungsvorrichtung(en) kodierte mindestens eine Eigenschaft des Rotors kontrollierbar ist,  a safety device with at least one detection device, by means of which the at least one characteristic of the rotor coded by the marking device (s) is controllable,
wobei die Sicherheitseinrichtung in Abhängigkeit von mindestens einer der Eigenschaften des Rotors aktivierbar ist.  wherein the safety device is activatable in dependence on at least one of the properties of the rotor.
Schlauchrollenpumpe gemäß Anspruch 1 , dadurch gekennzeichnet, dass bei Hose roller pump according to claim 1, characterized in that at
Inbetriebnahme der Schlauchrollenpumpe mit einem Rotor mit falschen oder ungeeigneten Eigenschaften die Schlauchrollenpumpe durch die Sicherheitseinrichtung deaktivierbar ist und/oder ein Warnsignal auslösbar ist. Commissioning of the hose roller pump with a rotor with incorrect or unsuitable properties, the hose roller pump can be deactivated by the safety device and / or a warning signal can be triggered.
Schlauchrollenpumpe gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Markierungsvorrichtung(en) derart bzgl. des Rotors angeordnet ist/sind, dass diese bei Drehung des Rotors an der mindestens einen Erfassungsvorrichtung vorbeigeführt wird/werden und hierdurch ein Signalmuster durch die mindestens eine Erfassungsvorrichtung erzeugt wird, durch welches die mindestens eine Eigenschaft des Rotors detektierbar ist. Tubular roller pump according to one of the preceding claims, characterized in that the marking device (s) is arranged with respect to the rotor / are such that it is passed on rotation of the rotor to the at least one detection device / and thereby a signal pattern by the at least one detection device is generated, by which the at least one property of the rotor is detectable.
4. Schlauchrollenpumpe gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Signalmuster der mindestens einen Erfassungs Vorrichtung unter Verrechnung mit einem Drehgeschwindigkeitssignal eines Schlauchrollenpumpen- antriebs auswertbar ist. 4. tube roller pump according to one of the preceding claims, characterized in that the signal pattern of the at least one detection device is evaluated with reference to a rotational speed signal of a hose roller pump drive.
5. Schlauchrollenpumpe gemäß einem der vorhergehenden Ansprüche, dadurch 5. tube roller pump according to one of the preceding claims, characterized
gekennzeichnet, dass jede der Markierungsvorrichtungen bei jeder Umdrehung durch mindestens zwei Erfassungsvorrichtungen erfassbar ist.  characterized in that each of the marking devices is detectable by at least two detection devices each revolution.
6. Schlauchrollenpumpe gemäß einem der vorhergehenden Ansprüche, dadurch 6. tube roller pump according to one of the preceding claims, characterized
gekennzeichnet, dass aus dem Signalmuster der mindestens einen  characterized in that from the signal pattern of the at least one
Erfassungsvorrichtung außerdem Drehzahl und/oder Drehrichtung des Rotors bestimmbar ist.  Detection device also speed and / or direction of rotation of the rotor can be determined.
7. Schlauchrollenpumpe gemäß einem der vorhergehenden Ansprüche, dadurch 7. tube roller pump according to one of the preceding claims, characterized
gekennzeichnet, dass die Markierungsvorrichtung(en) berührungsfrei magnetisch, elektromagnetisch und/oder optisch detektierbar ist/sind.  characterized in that the marking device (s) is non-contact magnetic, electromagnetic and / or optically detectable / are.
8. Schlauchrollenpumpe gemäß einem der vorhergehenden Ansprüche, dadurch 8. tube roller pump according to one of the preceding claims, characterized
gekennzeichnet, dass mindestens eine der Erfassungsvorrichtungen einen  characterized in that at least one of the detection devices a
Magnetfeldsensor, vorzugsweise einen Hall-Sensor, aufweist.  Magnetic field sensor, preferably a Hall sensor having.
9. Schlauchrollenpumpe gemäß einem der vorhergehenden Ansprüche, dadurch 9. tube roller pump according to one of the preceding claims, characterized
gekennzeichnet, dass mindestens eine der Erfassungsvorrichtungen einen  characterized in that at least one of the detection devices a
vorzugsweise elektromagnetischen oder induktiven Näherungssensor aufweist.  preferably comprises electromagnetic or inductive proximity sensor.
10. Schlauchrollenpumpe gemäß einem der vorhergehenden Ansprüche, dadurch 10. tube roller pump according to one of the preceding claims, characterized
gekennzeichnet, dass mindestens eine Markierungsvorrichtung eine  characterized in that at least one marking device a
Transpondervorrichtung aufweist. Transponder device has.
1 1. Schlauchrollenpumpe gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Markierungsvorrichtung(en) in unterschiedlichen Abständen zur Drehachse der Rotoraufnahme angeordnet ist/sind. 1 hose pump according to one of the preceding claims, characterized in that the marking device (s) is arranged at different distances from the axis of rotation of the rotor receptacle / are.
12. Schlauchrollenpumpe gemäß einem der vorhergehenden Ansprüche, dadurch 12. tube roller pump according to one of the preceding claims, characterized
gekennzeichnet, dass durch die Sicherheitseinrichtung die mindestens eine Eigenschaft des Rotors unter Berücksichtigung von Eigenschaften weiterer Bauteile - insbesondere von Schläuchen, Filter-, Membranvorrichtungen, Dialysatoren und/oder weiteren Rotoren - und/oder Arbeitsprogrammen und/oder weiteren Daten - insbesondere Behandlungs- und/oder Patientendaten - auswertbar ist.  characterized in that the at least one property of the rotor taking into account properties of further components - in particular of hoses, filter, membrane devices, dialyzers and / or other rotors - and / or work programs and / or other data - in particular treatment and / or or patient data - can be evaluated.
13. Dialysemaschine mit mindestens einer Schlauchrollenpumpe gemäß einem der 13. Dialysis machine with at least one hose roller pump according to one of
vorhergehenden Ansprüche.  previous claims.
EP11704232.5A 2010-02-18 2011-02-18 Safety device for a peristaltic pump Active EP2536952B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010002133.4A DE102010002133B4 (en) 2010-02-18 2010-02-18 Safety device for a hose roller pump
PCT/EP2011/052389 WO2011101430A1 (en) 2010-02-18 2011-02-18 Safety device for a peristaltic pump

Publications (2)

Publication Number Publication Date
EP2536952A1 true EP2536952A1 (en) 2012-12-26
EP2536952B1 EP2536952B1 (en) 2019-04-03

Family

ID=43858367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11704232.5A Active EP2536952B1 (en) 2010-02-18 2011-02-18 Safety device for a peristaltic pump

Country Status (4)

Country Link
EP (1) EP2536952B1 (en)
JP (1) JP5889803B2 (en)
DE (1) DE102010002133B4 (en)
WO (1) WO2011101430A1 (en)

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DE102014118853A1 (en) * 2014-12-17 2016-06-23 Hans Heidolph Gmbh & Co. Kg laboratory apparatus
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Also Published As

Publication number Publication date
DE102010002133B4 (en) 2015-11-12
WO2011101430A1 (en) 2011-08-25
EP2536952B1 (en) 2019-04-03
DE102010002133A1 (en) 2011-08-18
JP2013519478A (en) 2013-05-30
JP5889803B2 (en) 2016-03-22
CN102762863A (en) 2012-10-31

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