EP0872252B1 - Peristaltische Pumpe - Google Patents

Peristaltische Pumpe Download PDF

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Publication number
EP0872252B1
EP0872252B1 EP97202451A EP97202451A EP0872252B1 EP 0872252 B1 EP0872252 B1 EP 0872252B1 EP 97202451 A EP97202451 A EP 97202451A EP 97202451 A EP97202451 A EP 97202451A EP 0872252 B1 EP0872252 B1 EP 0872252B1
Authority
EP
European Patent Office
Prior art keywords
cam
tube segment
cams
cam followers
pump according
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
EP97202451A
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English (en)
French (fr)
Other versions
EP0872252A1 (de
Inventor
Swi Barak
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.)
Societe des Produits Nestle SA
Nestle SA
Original Assignee
Societe des Produits Nestle SA
Nestle SA
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
Priority to DE29724578U priority Critical patent/DE29724578U1/de
Application filed by Societe des Produits Nestle SA, Nestle SA filed Critical Societe des Produits Nestle SA
Priority to CA002285299A priority patent/CA2285299C/en
Priority to CN98804300.9A priority patent/CN1254296A/zh
Priority to BR9809093-3A priority patent/BR9809093A/pt
Priority to JP54480298A priority patent/JP2001523995A/ja
Priority to PCT/EP1998/001276 priority patent/WO1998047551A1/en
Priority to AU67281/98A priority patent/AU743140B2/en
Priority to US09/030,988 priority patent/US6106249A/en
Priority to ARP980101793A priority patent/AR012468A1/es
Publication of EP0872252A1 publication Critical patent/EP0872252A1/de
Application granted granted Critical
Publication of EP0872252B1 publication Critical patent/EP0872252B1/de
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
    • 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
    • F04B49/106—Responsive to pumped volume
    • 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
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/088—Machines, pumps, or pumping installations having flexible working members having tubular flexible members with two or more tubular flexible members in series
    • 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
    • F04B2201/00—Pump parameters
    • F04B2201/12—Parameters of driving or driven means
    • F04B2201/1201—Rotational speed of the axis
    • 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
    • F04B2201/00—Pump parameters
    • F04B2201/12—Parameters of driving or driven means
    • F04B2201/1204—Position of a rotating inclined plate
    • F04B2201/12041—Angular position
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/50—Presence of foreign matter in the fluid
    • F04B2205/503—Presence of foreign matter in the fluid of gas in a liquid flow, e.g. gas bubbles
    • 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
    • F04B2207/00—External parameters
    • F04B2207/01—Load in general

Definitions

  • This invention relates to a peristaltic pump which is suitable for use in systems for administration of liquids to a patient.
  • EP 0 526 962 discloses a two cycle peristaltic pump for pumping fluid through a resilient tube, including a pair of pumping fingers, a pair of pinching fingers and a strain gauge to monitor the pressure inside the tube.
  • a medical infusion system wherein use is made of a cassette, comprising a pumping chamber and including means to attach tubings thereto.
  • a cassette comprising a pumping chamber and including means to attach tubings thereto.
  • the volume of the pumping chamber is reduced by inserting an actuator, while the transport direction is selected by occluding one of the two tubings.
  • a transfusion pump wherein a transfusion tube, a plurality of finger plates and a reception plate opposite to the finger plates for holding the other side of the transfusion tube are arranged.
  • the finger plates are contacted with cams mounted on a rotary shaft and are on their other side provided slidably with guide elements.
  • EP-A-0858812 which was published after the filing date of the present application but has an earlier priority date and is therefore considered as comprised in the state of the art pursuent to Article 54(3) and (4) EPC, relates to a linear peristaltic pump, in which a first cam and a first cam follower in the form of an input valve, at least three intermediate cams and cam followers for pumping operation and a last cam and a last cam follower in the form of an output valve are used.
  • This invention relates to a peristaltic pump for propelling liquid through a flexible tube segment, the pump comprising:
  • the tube engaging surfaces of the restriction cam followers extend further from the cams than the tube engaging surfaces of the other cam followers. This may be provided by providing the tube engaging surface of each restriction cam follower with a planar tube engaging surface while the other cam followers have a concave tube engaging surface.
  • a restriction cam follower is preferably mounted as the terminal cam follower; especially as the terminal cam follower in forward pumping direction of the pump.
  • the restriction cam follower preferably retracts to open the flexible tube segment only when the rear terminal cam follower is fully extended.
  • the pump further comprises sensor means for determining the direction and speed of rotation of the cam shaft.
  • the sensor means may comprise
  • Each cam is preferably aligned at an angle of 30° with respect to its adjacent cams. Twelve cams may be provided.
  • the pump may further comprise a housing having a chamber through which the tube segment extends and into which the cam followers reciprocally extend, the chamber having a removable wall element which retains the tube segment between it and the tube engaging surfaces of the cam followers.
  • the motor preferably may rotate the shaft clockwise and counter-clockwise, enabling liquid to be propelled through the tube segment in both directions.
  • the cam followers are preferably arranged in a linear array on the shaft and are arranged so that revolution of the cam shaft causes a phase shift in the reciprocation of the cam followers along the linear array. Consequently, the occlusion "advances" in the tube segment from one tube portion to the next, in a continuous wave-like manner. This propels the liquid through the tube segment and hence to the patient through a liquid flow set.
  • the pump preferably comprises one or more sensors for measurement of flow parameters or parameters of indicative of the pressure within the tube segment.
  • An example of a suitable sensor is a pressure sensor which measures the diameter of the tube segment (which is an indication of the liquid pressure within the tube segment).
  • a particular example of such a pressure sensor is a strain gauge.
  • the determination of the pressure may be important in order to determine existence of flow problems such as, for example, an occlusion in the flow set, and the presence of leaks.
  • Another example of a suitable sensor may be a sensor which tests for existence of air pockets or foam within the tube segment.
  • a particular example of such a sensor is an ultrasonic sensor which measures the attenuation of an ultrasonic signal passing through the tube segment, which is different for liquid or gas.
  • the sensors may be coupled to the control unit for the pump and upon detecting a faulty flow parameter or existence of air pockets or foam, the control unit may be induced to halt the pump, and optionally also to generate an alarm signal.
  • a pump 10 comprises a housing 12 which has a user interface unit 14 and a pumping assembly 16.
  • the user interface 14 has a key pad 18, an audio signalling element 20, and a display 22.
  • the key pad 18 may be used to initiate or stop the pump and for input of data such as flow rate, flow time, and the like.
  • the audio signalling element 20 is typically a small loudspeaker for providing alarm signals.
  • the pumping assembly 16 is positioned in a rectangular basin 26 in the housing 12 and includes a motor support structure 33 and a door 28 which closes the opening of the basin 26.
  • the door 28 is hingedly connected to the motor support structure 33 by pivoting members 30, pivots 31 and hinge elements 32.
  • the pivoting members 30 are integral with the door 28 and are connected by the pivots 31 to the hinge elements 32 which are integral with the motor support structure 33.
  • the hinge elements 32 are situated at an end of a projection 32' of the motor support structure 33.
  • the door 28 also includes a latch 34 having a release lever 35, a biasing spring 36 and a hook 37.
  • the hook 37 engages with a lateral shoulder 38 of a locking recess 39 in the housing 12 to lock the door 28 closed on the housing 12.
  • a channel 40 for receiving a flexible tube segment 42 of a flow set extends across the housing 12, between a pair of openings 42 and 44 in the side walls of the housing 12.
  • the channel 40 defines a first axis 45.
  • the channel 40 has a pair of well-shaped portions 46 and 48 at either end which are separated by a primary channel portion 50.
  • the primary channel portion 50 of the channel 40 has two pairs of opposing tube centralising segments 54 and 56.
  • Adjacent one opening 42, the channel 40 has a cavity 60, which together with the opening 42, serves as a socket for receiving a shaped connector 62 coupled in tube segment 42.
  • the fitting of the shaped connector 62 into the socket ensures correct engagement of the tube segment 42 with the pump 10.
  • the cavity 60 may include a microswitch (not shown) to provide a signal to the control unit of the pump 10 indicative of engagement of the tube segment 42 with the pump 10.
  • the door 32 includes a pair of projections 84 and 86 which, while door 32 is being closed, assist in pushing the tube segment 42 tightly into the channel 40.
  • a wall element 70 is pivotally coupled to the pivots 31 by pivoting members 78.
  • the wall element 70 has a planar, tube engaging face 72 and has two pairs of recesses 74 in correspondence to centralising segments 54 and 56.
  • the wall element 70 is coupled to the door 32 by means of biasing springs 80, whereby closing of the door 32 imparts a biasing force on the wall element 70.
  • Each well-shaped portion 46 and 48 has, at its bottom surface (not shown) a sensor.
  • One of the sensors is an ultrasonic sensor to detect the constituents of the liquid passing through the tube segment 42, in particular to determine whether it contains bubbles or air pockets.
  • the other sensor is a strain gauge for measuring the diameter of the tube segment 42 to determine the pressure of the liquid within the tube segment 42. Any suitable sensors may be used Suitable sensors are known.
  • the bottom surface of primary channel portion 50 of the channel 40 is lined with a fabric 90. Therefore, once the tube segment 42 is placed into the channel 40 and the door 32 is closed, the tube segment 42 is retained between the tube engaging face 72 of the wall element 70 and the fabric 90 (see Fig. 2).
  • the fabric 90 may be plastic film or the like. The fabric 90 serves to protect the tube segment 42 against wear and tear.
  • the pumping mechanism of the pump 10 is formed of a plurality of cams 100 and cam followers 94; the embodiment shown having twelve.
  • the cam followers 94 have a tube engaging surface 96 at one end and a cam surface 98 at their opposite end.
  • the cam surface 98 of each cam follower 94 bears on a cam 100.
  • Certain of the cam followers 94 have a concave tube engaging surface 96 which serves to centralise the tube segment 42 within the chamber 40. This prevents distortions in the linear arrangement of the tube segment 42.
  • Each cam 100 is eccentrically fixed on a hexagonal shaft 102 which lies in an axis parallel to the first axis 45. Due to the eccentric arrangement of the cams 100 on the hexagonal shaft 102, when the cams 100 rotate with the shaft 102, they induce the cam followers 94 to reciprocate linearly in a direction 106 normal to the first axis 45. During this reciprocal movement, the cam followers 94 move between a first, extended position where they depress a portion of tube segment 42 to occlusion, and a second, retracted position (as shown in Fig. 2), where the bore 43 of the tube segment 42 is open to allow liquid flow.
  • each cam 100 has a hexagonal bore 140 into which the hexagonal shaft 102 is received. Further each cam 100 has a crescent-shaped recess 142 in each face. A cylindrical bore 144 extends through each cam 100, from the recess 142 in one face to the recess 142 in the other face. A cylindrical pin 146 projects outwardly from one face of the cam 100 from within the recess 142. The angle between the cylindrical bore 144 and the cylindrical pin 146 on the face, measured from the centre of bore 140, is 30°.
  • the cams 100 are provided in two different configurations.
  • One configuration is illustrated as cam 100' in Figs. 6A.
  • the crescent-shaped recess 142 is centrally aligned above a side of the hexagonal bore 140.
  • the other configuration is illustrated as cam 100" in Fig. 6B.
  • the crescent-shaped recess 142 is centrally aligned above an apex of the hexagonal bore 142.
  • the cams 100 are mounted on the hexagonal shaft 102 such that a cam 100' of one configuration is followed by a cam 100" of the other configuration. In this way, adjacent cams 100 are aligned at an angle of 30° with respect to one another.
  • the cylindrical pin 146 projecting from one cam 100' fits into the cylindrical bore 144 of the adjacent cam 100".
  • a linear array of cams 100 is obtained, with each cam 100 aligned at an angle of 30° from any adjacent cam 100.
  • the sum of the angles between all twelve cams 100, namely between the first cam 100 in the array and the last one, is 330°. This means that there is a phase difference of 30° in the reciprocation cycle of the cam follower 94 at one end and that at the other end.
  • the cam surfaces 98 of the cam followers 94 protrude through openings 112 in the motor support structure 33 towards the cams 100.
  • the cams 100 are arranged in three groups of four cams each, each group corresponding to one of the openings 112. The three groups are separated from one another by spacer elements 111.
  • Each spacer element 111 has a cylindrical bore at one end for receiving a cylindrical pin 146 projecting from the adjacent cam 100. Also, each spacer element 111 is provided with a cylindrical pin (not shown) at an opposite end for engaging in the cylindrical bore 144 of a cam 100 at that end. A ring (not shown) is mounted at both ends of the array of cams 100 to hold the cams 100 in position on the hexagonal shaft 102. The ring at one end has a cylindrical pin for engaging in the cylindrical bore 144 of the adjacent cam 100 and the ring at the other end has a cylindrical bore for receiving the cylindrical pin 146 of its adjacent cam 100.
  • a restriction cam follower 94' extends further, in its extended position, towards the tube segment 42 as compared to the other cam followers 94.
  • This may be provided in a number of ways.
  • the restriction cam follower 94' may be slightly longer than the other cam followers 94.
  • the restriction cam follower 94' may be provided with a straight or convex tube engaging surface 96'.
  • the overall length of the restriction cam follower 94' is the same as that of all the other cam followers 94.
  • the tube segment 42 at the front cam follower 94 would open prior to complete occlusion of the tube segment 42 at the rear cam follower 94. This would result in a small degree of back flow of fluid in the small time interval prior to complete occlusion of the tube segment 42 at the rear cam follower 94.
  • a restriction cam follower 94' this problem may be avoided.
  • the pump 10 has one pumping direction which is defined as the forward pumping direction.
  • the restriction cam follower 94' is preferably positioned as the forward terminal cam follower.
  • Figs. 8A and 8B The fully extended and fully retracted position of a standard cam follower 94 and a restriction cam follower 94' are illustrated in Figs. 8A and 8B.
  • Fig. 8A illustrates both types of cam follower 94 and 94' in their fully extended position in which they occlude a portion of the tube segment 42 through the intermediary of the fabric 90.
  • the saddle 148 of the tube engaging surface 96 engages the tube segment 42.
  • the restriction cam follower 94' has a planar tube engaging surface 96', the tube engaging surface 96' extends further towards wall 72 and thus squeezes the tube segment 42 to a greater extent as compared to the standard cam follower 94.
  • Both types of cam follower 94 and 94' are illustrated in Fig. 8B in their fully retracted position with the tube segment 42 fully opened to allow flow of liquid through its bore 43.
  • An electric motor 108 is fixed on the motor support structure. This can best be seen in Fig. 4.
  • the electric motor 108 has a gear wheel 120 coupled to a gear wheel 122 on the hexagonal shaft 102.
  • the motor 108 is connected to a control unit 136 through a cable 138.
  • An encoder wheel 124 is fixed onto the end of the hexagonal shaft 102.
  • the encoder wheel 124 has a plurality of openings 126 through it and arranged in a circle about the centre of the encoder wheel 124.
  • Each opening 126 is of exactly the same size and shape as each other opening 126. Further, each opening 126 is positioned a distance from the centre of the encoder wheel 124 equal to that of any other opening 126. Also, the angle between any pair of openings 126 is the same as that between any other pair of openings such that the openings 126 are equi-spaced around the centre of the encoder wheel 124.
  • the arc distance between each pair of openings 126 is approximately the same as the arc dimension of each opening 126.
  • a pair of optical sensors 130 are fixed to the motot support structure 33 in close proximity to the encoder wheel 124 and to each other.
  • the optical sensors 130 are aligned with the openings 126 such that they may determine whether there is an opening 126 in front of them or not. Further, the distance between the optical sensors 130 is such that both sensors may be aligned in front of an opening 126 or in front of the area between a pair of openings 126.
  • both sensors may be in front of an opening 126.
  • the first sensor may be in front of an opening 126 while the second is in front of the area between two openings 126.
  • the second sensor may be in front of an opening 126 while the first is in front of the area between two openings 126.
  • both sensors may be in front of the area between two openings 126.
  • the sensors 130 may be used to monitor the direction and speed of rotation of the openings 126 and hence may be used to determine the direction and speed of rotation of the pump 10. From this, the direction of flow and the flow rate of the liquid through the tube segment 42 may be determined.
  • the sensors 130 are preferably controlled such that, if one sensor is not working, the other sensor 130 will not function. This prevents mis-counting problems which may arise if only one sensor 130 were operating.
  • Fig. 9 shows three continuous consecutive phases of the operation of the pump 10.
  • the point of occlusion of the tube segment 42 advances from left 150 (Fig. 9A) towards the middle of the segment 152 (Fig. 9B) and to the right 154 (Fig. 9C) in a wave-like fashion.
  • This sequence is repeated continuously and thus a body of liquid is continuously propelled from left to right.
  • the restriction cam follower 94' is typically the right most one. Since it extends further in its extended position, it occludes the tube segment 42 for somewhat longer than the other cam followers 94. This prevents back flow of liquid.
  • cams 100 it is not necessary to use twelve cams 100; any suitable number of cams 100 may be used. Also, it is not necessary to use a hexagonal shaft 102. Instead a shaft of any suitable cross-section may be used. For example, if a shaft 102 of octagonal cross-section is used, adjacent cams 100 will be aligned at an angle of about 22.5° with respect to each other. In this case, the total number of cam 100 will conveniently be 16. Further, the cams 100 need not be mounted on the shaft 102 in groups of 4.
  • the embodiment described causes a single propagating depression in the tube segment.
  • this is not essential and the cams 100 may be arranged to cause the depression wave to have more than one cycle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Claims (10)

  1. Peristaltische Pumpe (10) zum Vorantreiben von Flüssigkeit durch ein flexibles Leitungssegment (42), wobei die Pumpe folgendes umfaßt:
    eine Nockenwelle (102), die eine Vielzahl von Nocken (100, 100', 100'') trägt, die jeweils eine Antriebsfläche aufweisen, wobei die Antriebsflächen benachbarter Nocken in einem Winkel um die Nockenwelle zueinander beabstandet sind;
    eine Vielzahl von Nockenstößeln (94, 94'), die jeweils reziprok in einer gemeinsamen Richtung senkrecht zu der Achse der Nockenwelle liegen, wobei jeder Nockenstößel (94, 94') eine Nockenfläche, die auf der Antriebsfläche eines Nocken reitet, und eine Leitungseingrifffläche zum In-Eingriff-Nehmen des flexiblen Leitungssegments (42) aufweist, wobei zumindest einer der Nockenstößel (94, 94') ein Beschränkungsnockenstößel (94') ist, dessen Leitungseingrifffläche das flexible Leitungssegment (42) eine längere Zeitdauer in Eingriff nimmt, als die der anderen Nockenstößel (94); und
    einen Motor (108) zum Drehen der Nockenwelle (102), wodurch die Nocken (100, 100', 100'') die Nockenstößel (94, 94') veranlassen, jeweils das flexible Leitungssegment (42) in Eingriff zu nehmen und zu verschließen, um eine sich fortpflanzende Depressionswelle in dem flexiblen Leitungssegment (42) zu bilden, um Flüssigkeit voranzutreiben, wobei die Beschränkungsnockenstößel (94') einen Rückfluß der Flüssigkeit verhindern.
  2. Pumpe nach Anspruch 1, bei der sich die Leitungseingriffflächen der Beschränkungsnockenstößel (94') weiter von den Nocken (100, 100', 100'') als die Leitungseingriffflächen der anderen Nockenstößel (94) erstrecken.
  3. Pumpe nach Anspruch 2, bei der die Leitungseingriffsflächen der Beschränkungsnockenstößel (94') eine ebene Leitungseingrifffläche aufweisen, während die anderen Nockenstößel (94) eine konkave Leitungseingrifffläche haben.
  4. Pumpe nach einem der Ansprüche 1 bis 3, bei der ein Beschränkungsnockenstößel (94') als ein abschließender Nockenstößel montiert ist.
  5. Pumpe nach Anspruch 4, bei der der Beschränkungsnockenstößel (94') als der in Vorwärtspumprichtung der Pumpe letzte Nockenstößel montiert ist.
  6. Pumpe nach Anspruch 5, bei der sich der Abschlußnockenstößel zurückzieht, um das flexible Leitungssegment (42) nur zu öffnen, wenn der hintere abschließende Nockenstößel vollständig ausgestreckt ist.
  7. Pumpe nach einem der Ansprüche 1 bis 6, desweiteren mit Sensormitteln zum Bestimmen der Rotationsrichtung und der Drehzahl der Nockenwelle (102).
  8. Pumpe nach Anspruch 7, bei der die Sensarmittel folgendes umfassen:
    eine Scheibe, die sich in Übereinstimmung mit der Nockenwelle (102) dreht, wobei die Scheibe eine Vielzahl von im wesentlichen identischen Durchgangsöffnungen (126) aufweist, die um ihre Achse gleichbeabstandet sind; und
    einem Paar Sensoren (130), die benachbart der Scheibe in Ausrichtung mit den Öffnungen (126) montiert sind, wobei die Sensoren fähig sind, bei jedem Zeitpunkt zu bestimmen, ob beide Sensoren mit der gleichen Öffnung ausgerichtet sind, ob ein Sensor aber nicht der andere mit einer Öffnung ausgerichtet ist, oder ob beide Sensoren nicht mit einer Öffnung ausgerichtet sind, wobei es das Überwachen der Änderungen der Ausrichtung der Sensoren mit den Öffnungen ermöglicht, die Rotationsrichtung und die Drehzahl der Scheibe zu berechnen.
  9. Pumpe nach einem der Ansprüche 1 bis 8, bei dem jeder Nocken (100, 100', 100'') in einem Winkel von 30° bezüglich seiner benachbarten Nocken (100, 100', 100'') ausgerichtet ist.
  10. Pumpe nach einem der Ansprüche 1 bis 9, desweiteren mit einem Gehäuse (12), das eine Kammer umfaßt, durch die sich das Leitungssegment (42) erstreckt, und in die sich die Nockenstößel (94, 94') reziprok erstrecken, wobei die Kammer ein entfernbares Wandelement (70) umfaßt, das das Leitungssegment zwischen sich und den Leitungseingriffflächen der Nockenstößel hält.
EP97202451A 1997-04-18 1997-08-07 Peristaltische Pumpe Expired - Lifetime EP0872252B1 (de)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DE29724578U DE29724578U1 (de) 1997-04-18 1997-08-07 Peristaltische Pumpe
CN98804300.9A CN1254296A (zh) 1997-04-18 1998-02-24 蠕动泵
BR9809093-3A BR9809093A (pt) 1997-04-18 1998-02-24 Bomba peristáltica
JP54480298A JP2001523995A (ja) 1997-04-18 1998-02-24 蠕動ポンプ
CA002285299A CA2285299C (en) 1997-04-18 1998-02-24 Peristaltic pump
PCT/EP1998/001276 WO1998047551A1 (en) 1997-04-18 1998-02-24 Peristaltic pump
AU67281/98A AU743140B2 (en) 1997-04-18 1998-02-24 Peristaltic pump
US09/030,988 US6106249A (en) 1997-04-18 1998-02-26 Peristaltic pump
ARP980101793A AR012468A1 (es) 1997-04-18 1998-04-17 Bomba peristaltica

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL12069797A IL120697A (en) 1997-04-18 1997-04-18 Peristaltic pump
IL120697 1997-04-18

Publications (2)

Publication Number Publication Date
EP0872252A1 EP0872252A1 (de) 1998-10-21
EP0872252B1 true EP0872252B1 (de) 2003-10-22

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ID=11070054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97202451A Expired - Lifetime EP0872252B1 (de) 1997-04-18 1997-08-07 Peristaltische Pumpe

Country Status (6)

Country Link
EP (1) EP0872252B1 (de)
AR (1) AR012468A1 (de)
AT (1) ATE252396T1 (de)
DE (1) DE69725698T2 (de)
IL (1) IL120697A (de)
ZA (1) ZA983206B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8377000B2 (en) 2010-10-01 2013-02-19 Abbott Laboratories Enteral feeding apparatus having a feeding set
US8377001B2 (en) 2010-10-01 2013-02-19 Abbott Laboratories Feeding set for a peristaltic pump system
US8689439B2 (en) 2010-08-06 2014-04-08 Abbott Laboratories Method for forming a tube for use with a pump delivery system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2334074B (en) * 1998-02-05 2002-02-13 Baxter Int Tubing restoring bumpers for improved accuracy peristaltic pump
KR100561243B1 (ko) * 2003-11-28 2006-04-04 주식회사 우영메디칼 휴대용 약물 주입펌프
FR2908165A1 (fr) 2006-11-08 2008-05-09 Fresenius Vial Soc Par Actions Procede de controle du debit d'une pompe peristaltique et pompe peristaltique

Citations (1)

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EP0858812A2 (de) * 1997-02-17 1998-08-19 Micrel, Microelectronic Applications Center Ltd. Lineare peristaltische Pumpe

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US3726613A (en) * 1970-10-12 1973-04-10 Casimir W Von Pulsefree peristaltic pump
DE3104985A1 (de) * 1980-02-26 1981-12-24 Andros Inc., Berkeley, Calif. "medizinische infusionsvorrichtung und verfahren zum betreiben derselben"
US4869646A (en) * 1984-10-15 1989-09-26 American Hospital Supply Corp. Continuous peristaltic pump
JPS6232968A (ja) * 1985-08-02 1987-02-12 日機装株式会社 輸液ポンプ
US5217355A (en) * 1991-08-05 1993-06-08 Imed Corporation Two-cycle peristaltic pump with occlusion detector

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
US8689439B2 (en) 2010-08-06 2014-04-08 Abbott Laboratories Method for forming a tube for use with a pump delivery system
US8377000B2 (en) 2010-10-01 2013-02-19 Abbott Laboratories Enteral feeding apparatus having a feeding set
US8377001B2 (en) 2010-10-01 2013-02-19 Abbott Laboratories Feeding set for a peristaltic pump system

Also Published As

Publication number Publication date
DE69725698D1 (de) 2003-11-27
IL120697A (en) 2003-03-12
DE69725698T2 (de) 2004-07-22
AR012468A1 (es) 2000-10-18
IL120697A0 (en) 1997-08-14
EP0872252A1 (de) 1998-10-21
ZA983206B (en) 1999-10-18
ATE252396T1 (de) 2003-11-15

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