US20070104599A1 - Peristaltic pump - Google Patents
Peristaltic pump Download PDFInfo
- Publication number
- US20070104599A1 US20070104599A1 US10/573,287 US57328704A US2007104599A1 US 20070104599 A1 US20070104599 A1 US 20070104599A1 US 57328704 A US57328704 A US 57328704A US 2007104599 A1 US2007104599 A1 US 2007104599A1
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- United States
- Prior art keywords
- tubing
- body member
- bed body
- pump according
- support frame
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
- F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
- F04B43/1292—Pumps specially adapted for several tubular flexible members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
- F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
Definitions
- the invention refers to a peristaltic pump according to the preamble of claim 1 .
- Peristaltic pumps of the kind discussed herein are fundamentally known. They are used for conveying different liquid and gaseous media.
- a roller pump for peristaltically conveying of media which is provided with a tube cartridge.
- the tube cartridge is fixed to the roller pump by means of a lockable cover.
- the conveying rollers are resiliently supported by a rotation body member.
- a peristaltic pump which is provided with a multi-part housing in which a reduction gear box is located.
- the pressure rollers for squeezing a flexible tube section are integrated into the reduction gear box.
- Such a pump consists of a multitude of components, is relatively expensive to manufacture and requires a lot of time for assembling.
- a peristaltic pump which comprises a support frame on which the rotor is replaceably supported.
- the support frame is provided with latch-shaped notch elements, which serve for fixing a plate member constituting the upper portion of the housing.
- the plate member is concavely shaped at the inner side and serves to receive a flexible tube section.
- FIG. 1 an exploded view of the peristaltic pump
- FIG. 2 the assembled pump according to FIG. 1 in a first cross sectional view
- FIG. 3 the assembled pump according to FIG. 1 in a further cross sectional view.
- FIG. 1 shows a six channel peristaltic pump in an exploded view.
- the pump consists of a support frame 1 , a tubing holder 2 , a rotor 3 and a connecting element 4 having six tubing sections 43 located thereon. Also evident is a gear wheel 5 for coupling to a not shown driving motor.
- the support frame 1 designed to be dimensionally stable, constitutes, together with the tubing holder 2 , the real housing of the pump.
- the support frame 1 is provided with two bearing sleeves 11 .
- the two front faces of the support frame 1 are constituted by panels 12 , which are provided with slots 15 a , 15 b for fixing the support frame 1 and the entire pump, respectively.
- the support frame 1 is provided with several slot-like cut-outs 13 on both sides, in which notch elements 22 of the tubing holder 2 are clampingly fixable, as will be described further in the following.
- the tubing holder 2 comprises a tubing bed body member 25 , which is designed essentially in the shape of an Omega and which extends at the inner side in the shape of a circular arc coaxial to the axis of rotation of the rotor 3 over an angle of appr. 130° to constitute a tubing bed.
- the expression “in the shape of an omega” means in the present case that the tubing bed body member 25 has substantially the shape of a capital omega ( ⁇ ).
- the tubing bed body member 25 presents two legs 2 a , 2 b which pass over from a concave shape to a convex shape in a smooth transition.
- the tubing bed is divided into six sections by means of groove-like recesses 21 which serve to receive the flexible tube sections.
- the tubing bed body member 25 could be provided with a substantially smooth inner side.
- the two legs 2 a , 2 b of the tubing bed body member 25 are provided, on the outer side, with notch elements 22 by means of which the tubing holder 2 is fixable to the slot-like cut-outs 13 of the support frame 1 .
- the outer side of the tubing bed body member 25 is provided with radially extending reinforcing ribs 23 as well as with axially extending reinforcing ribs 24 .
- the radially extending reinforcing ribs 23 extend along appr.
- the tubing holder 2 is dimensioned such that the ends of the two legs 2 a , 2 b of the tubing bed body member 25 are resiliently flexible in radial direction and make possible a quick fixing of the tubing holder 2 to the support frame 1 in the sense of a snap-on connection.
- the rotor 3 consists of a rotor body 31 , provided with a central axis 32 which is inserted into the bearing sleeves 11 of the support frame 1 .
- Three conveying rollers 33 are rotatably supported on the rotor body 31 .
- the rotor body 3 is manufactured of plastic material, while the central axis 32 as well as the conveying rollers 33 preferably consist of metal.
- the connecting element 4 consists of a base element 41 , to which are fixed twelve pipe sections 42 . Attached to the upper portions of these pipe sections 42 are a total of six flexible tubing sections 43 , which rest on the inner side of the tubing bed body member 25 , once the pump is assembled, and which are squeezable by the conveying rollers 33 for the peristaltic conveying of a medium. It is understood that the design of the inlet and the outlet section is not limited to a six channel pump, but the number of the channels is substantially arbitrarily variable.
- the assembly of the shown components to a pump can be accomplished with a few simple steps; first, the particular tubing sections 43 are attached to the connecting element 4 and then, the rotor 3 is transversely moved into the tubing sections 43 forming loops. Thereafter, the tubing holder 2 is U-shapely positioned and the rotor 3 , together with the connecting element 4 and the tubing sections 43 attached thereto are slid in from the top. Subsequently, the support frame 1 is positioned upright and a pressure is applied, such that the axis 32 of the rotor 3 as well as the notch elements 22 snap in. Finally, the connecting element 4 is fixed to the support frame 1 . In the embodiment shown here, the connecting element 4 is fixed by means of screws.
- a snap-on connection can be provided for fixing the connecting element 4 , which ensures a quick connection of the connecting element 4 to the support frame 1 .
- the entire assembly of the pump can be performed, without the use of tools, from one side, which constitutes an advantage in the case of an automatic manufacture.
- FIG. 2 shows a first cross sectional view of the assembled pump.
- the tubing holder 2 with the omega-shaped tubing bed body member 25 as well as the radial and axial reinforcing ribs 23 , 24 are evident.
- the reinforcing ribs 23 , 24 ensure that the tubing holder is dimensionally stable and does not deform in operation under the load of the conveyor rollers 33 a , 33 b , 33 c .
- the tubing bed body member 25 with “soft” inlet portion and outlet portion Due to the omega shaped design of the tubing bed body member 25 with “soft” inlet portion and outlet portion, a continuous substantially pulsation free conveying of the particular medium is ensured.
- a further advantage of the soft inlet and outlet portions is the reduction of torque peaks which, otherwise, would load the motor and the gear box. Assuming a sense of rotation D in counterclockwise direction, the region designated by reference numeral 35 constitutes the inlet portion, while the region designated by reference numeral 36 constitutes the outlet portion of the pump.
- the pump can be operated both in clockwise direction and in counterclockwise direction.
- a soft and continuous inlet portion and outlet portion means that both the inlet portion 35 and the outlet portion 36 are designed such that the tubing cross section relevant for conveying is continuously decreased and increased, respectively, by the conveying roller 33 a , 33 c rolling along the particular flexible tubing portion 43 .
- the tubing bed body member 25 is accurately manufactured and that it exhibits a high dimensional stability in operation such that the predetermined distances between conveying roller 33 a , 33 b , 33 c and tubing bed body member 25 are maintained.
- the pump Since the pump is designed symmetrically, it can be operated bi-directionally, i.e. in both senses of rotation. Additionally, as the view shown in FIG. 2 exhibits, that the particular tubing section 43 is not fully squeezed in the inlet portion 35 and in the outlet portion 36 , while it is fully squeezed after the inlet portion 35 by the corresponding conveyor roller 33 b to enable a peristaltic conveying of the particular medium.
- a pump designed in such a way is also particularly suitable for conveying fluid media in a way gentle to cells, for example blood, because the blood corpuscles are prevented from damage by the particular design of the inlet and outlet portions 35 , 36 .
- tubing holder 2 with a dimensionally stable tubing bed body member 25 and with elastically resilient legs 2 a , 2 b ensures a very quick and simple assembling, i.e. by simply clicking in the tubing holder 2 into the support frame. Even if the legs 2 a , 2 b have to be elastically resilient for assembly, the tubing bed body member 25 has to maintain its dimensional stability and a precise geometry. This goal is met, amongst else, by the fact that the elastically resilient parts are positioned and stiffened by means of an outer positive fitting support on the support frame 1 .
- FIG. 3 showing a cross sectional view of the assembled pump taken between two tubing sections 43 , particularly the clamping fixation of the tubing bed body member 25 to the support frame is evident.
- the notch elements 22 located at the outside of the tubing bed body member 25 engage the slot-shaped cut-outs 13 of the support frame 1 .
- the notch elements 22 positively engage an upper web 14 of the support frame, delimiting the slot-shaped cut-outs 13 .
- the legs 2 a , 2 b of the tubing bed body member 25 are positively supported at the outside by the web 14 of the support frame 1 .
- This design particularly also ensures a precise observation of the optimized distances between the conveyor rollers 33 a , 33 b , 33 c and the inside of the tubing bed body member 25 .
- the individual elastic tubing sections 43 additionally support the fixing of the tubing bed body member 25 at the support frame 1 , since the conveyor rollers 33 a , 33 b , 33 c of the rotor 3 load the tubing bed body member 25 in radial direction via the tubing sections 43 , such that the fixation thereof to the support frame 1 is additionally supported.
- the connecting element 4 is designed such and matched to the tubing holder 2 and to the rotor 3 such that the individual tubing section 43 is led essentially in tangential direction into the tubing bed body member 25 of the tubing holder 2 and also led out there from.
- the tubing bed body member 25 has to enlace the rotor 3 , depending on the number of conveyor rollers, to such a degree that always at least one conveyor roller 33 a , 33 b , 33 c is active, i.e. engages the particular tubing section and squeezes it.
- the calculated enlacement is to be understood as a minimal amount of enlacement.
- the enlacement is chosen about 10° higher than the angle of enlacement calculated by means of the foregoing formula.
- the expression “enlacement” shall be understood as that part of the tubing bed that coaxially surrounds the rotor.
Abstract
The invention relates to a peristaltic pump in which a case is formed by a dimensionally stable supporting frame (1) and by a tube reception device (2) formed thereon by clipping. A rotor (3) provided with three rotatable transport rollers (33 a , 33 b , 33 c). Said tube reception device (2) is provided with a tube bearing body (25) which forms a bed for the tubes on the internal surface and comprises two legs (2 a , 2 b) on the ends thereof. The tube flexible sections (43) are compresses by said transport rollers (33 a , 33 b , 33 c) in order to ensure the peristaltic conveyance of a medium. The two legs (2 a , 2 b) are elastically deformable in a radial direction in order to be elastically adaptable on the supporting frame (1). The bearing body (25) is substentially omega-shaped and provided with uniform input and output areas which ensure a medium continuous low-pulsed peristaltic conveyance. The inventive pump is constructed in such a way that it is small-sized, comprises few spare parts and is rapidly and easily mounted.
Description
- The invention refers to a peristaltic pump according to the preamble of
claim 1. - Peristaltic pumps of the kind discussed herein are fundamentally known. They are used for conveying different liquid and gaseous media.
- From the
EP 1 137 886, a roller pump for peristaltically conveying of media is known, which is provided with a tube cartridge. The tube cartridge is fixed to the roller pump by means of a lockable cover. The conveying rollers are resiliently supported by a rotation body member. As it is particularly evident fromFIG. 1 of this document, such a roller pump including the tube cartridge has a relatively large length and, accordingly, requires a lot of space. - From the WO 02/25112, a peristaltic pump is known, which is provided with a multi-part housing in which a reduction gear box is located. The pressure rollers for squeezing a flexible tube section are integrated into the reduction gear box. Such a pump consists of a multitude of components, is relatively expensive to manufacture and requires a lot of time for assembling.
- Finally, from the U.S. Pat. No. 5,857,843, a peristaltic pump is known, which comprises a support frame on which the rotor is replaceably supported. The support frame is provided with latch-shaped notch elements, which serve for fixing a plate member constituting the upper portion of the housing. The plate member is concavely shaped at the inner side and serves to receive a flexible tube section. Even if such a pump is of very simple design and can be manufactured at low costs, it has, amongst else, the disadvantage that only a comparatively small tube section and circular arc section, respectively, is available for peristaltic conveying. Moreover, the plate member appears to be relatively unstable, particularly in transverse direction, what has a negative influence on a constant conveying rate. Additionally, the mutual force action of the squeezed tube can result in bending apart the notch elements.
- It is the object of the present invention to improve a pump designed according to the preamble of
claim 1 in such a way that it is compact, that it can be manufactured at low costs, that it can be assembled easily and quickly, and that it is very rigid in assembled form and shows high shape constancy. - This object is met with a pump which comprises the characteristics listed in the characterizing portion of
claim 1. - Advantageous further developments of the peristaltic pump are defined in the
dependent claims 2 to 14. - In the following, a preferred embodiment of the invention is further explained by means of drawings. Shown in these drawings is in:
-
FIG. 1 an exploded view of the peristaltic pump; -
FIG. 2 the assembled pump according toFIG. 1 in a first cross sectional view; and -
FIG. 3 the assembled pump according toFIG. 1 in a further cross sectional view. -
FIG. 1 shows a six channel peristaltic pump in an exploded view. Substantially, the pump consists of asupport frame 1, atubing holder 2, arotor 3 and a connectingelement 4 having sixtubing sections 43 located thereon. Also evident is agear wheel 5 for coupling to a not shown driving motor. - The
support frame 1, designed to be dimensionally stable, constitutes, together with thetubing holder 2, the real housing of the pump. For rotatably supporting therotor 3, thesupport frame 1 is provided with twobearing sleeves 11. The two front faces of thesupport frame 1 are constituted bypanels 12, which are provided withslots support frame 1 and the entire pump, respectively. Finally, thesupport frame 1 is provided with several slot-like cut-outs 13 on both sides, in whichnotch elements 22 of thetubing holder 2 are clampingly fixable, as will be described further in the following. - The
tubing holder 2 comprises a tubingbed body member 25, which is designed essentially in the shape of an Omega and which extends at the inner side in the shape of a circular arc coaxial to the axis of rotation of therotor 3 over an angle of appr. 130° to constitute a tubing bed. The expression “in the shape of an omega” means in the present case that the tubingbed body member 25 has substantially the shape of a capital omega (Ω). In the end region, the tubingbed body member 25 presents twolegs like recesses 21 which serve to receive the flexible tube sections. In place of the groove-like recesses 21 for constituting six sections, also a tubing mat, consisting of six tubes connected to each other, could be used. In this case, the tubingbed body member 25 could be provided with a substantially smooth inner side. The twolegs bed body member 25 are provided, on the outer side, withnotch elements 22 by means of which thetubing holder 2 is fixable to the slot-like cut-outs 13 of thesupport frame 1. The outer side of the tubingbed body member 25 is provided with radially extending reinforcingribs 23 as well as with axially extending reinforcingribs 24. The radially extending reinforcingribs 23 extend along appr. 180° of the outer side of the tubingbed body member 25. In any case, thetubing holder 2 is dimensioned such that the ends of the twolegs bed body member 25 are resiliently flexible in radial direction and make possible a quick fixing of thetubing holder 2 to thesupport frame 1 in the sense of a snap-on connection. - The
rotor 3 consists of arotor body 31, provided with acentral axis 32 which is inserted into thebearing sleeves 11 of thesupport frame 1. Threeconveying rollers 33, designed in the shape of barrels, are rotatably supported on therotor body 31. Preferably, therotor body 3 is manufactured of plastic material, while thecentral axis 32 as well as theconveying rollers 33 preferably consist of metal. - The connecting
element 4 consists of abase element 41, to which are fixed twelvepipe sections 42. Attached to the upper portions of thesepipe sections 42 are a total of sixflexible tubing sections 43, which rest on the inner side of the tubingbed body member 25, once the pump is assembled, and which are squeezable by theconveying rollers 33 for the peristaltic conveying of a medium. It is understood that the design of the inlet and the outlet section is not limited to a six channel pump, but the number of the channels is substantially arbitrarily variable. - The assembly of the shown components to a pump can be accomplished with a few simple steps; first, the
particular tubing sections 43 are attached to the connectingelement 4 and then, therotor 3 is transversely moved into thetubing sections 43 forming loops. Thereafter, thetubing holder 2 is U-shapely positioned and therotor 3, together with the connectingelement 4 and thetubing sections 43 attached thereto are slid in from the top. Subsequently, thesupport frame 1 is positioned upright and a pressure is applied, such that theaxis 32 of therotor 3 as well as thenotch elements 22 snap in. Finally, theconnecting element 4 is fixed to thesupport frame 1. In the embodiment shown here, the connectingelement 4 is fixed by means of screws. Alternatively, a snap-on connection can be provided for fixing the connectingelement 4, which ensures a quick connection of the connectingelement 4 to thesupport frame 1. The entire assembly of the pump can be performed, without the use of tools, from one side, which constitutes an advantage in the case of an automatic manufacture. -
FIG. 2 shows a first cross sectional view of the assembled pump. In this view, particularly therotor body 31 together with the threeconveyor rolls particular tubing section 43 in a rolling motion, thetubing holder 2 with the omega-shaped tubingbed body member 25 as well as the radial and axial reinforcingribs ribs conveyor rollers bed body member 25 with “soft” inlet portion and outlet portion, a continuous substantially pulsation free conveying of the particular medium is ensured. A further advantage of the soft inlet and outlet portions is the reduction of torque peaks which, otherwise, would load the motor and the gear box. Assuming a sense of rotation D in counterclockwise direction, the region designated byreference numeral 35 constitutes the inlet portion, while the region designated byreference numeral 36 constitutes the outlet portion of the pump. The pump can be operated both in clockwise direction and in counterclockwise direction. - A soft and continuous inlet portion and outlet portion means that both the
inlet portion 35 and theoutlet portion 36 are designed such that the tubing cross section relevant for conveying is continuously decreased and increased, respectively, by theconveying roller flexible tubing portion 43. In this connection, it is important that the tubingbed body member 25 is accurately manufactured and that it exhibits a high dimensional stability in operation such that the predetermined distances between conveyingroller bed body member 25 are maintained. - Besides the already mentioned advantage, further advantages result from a continuous inlet portion and outlet portion; for example, the torque fluctuations emerging from the rotation of the
rotor 3 are minimized. This is additionally favored by the facts that therotor 3 is provided with three conveyingrollers inlet portion 35 is offset around the axis of rotation of therotor 3 by about 240° relative to theoutlet portion 36, such that thefirst conveyor roller 33 a is located approximately in the middle of theinlet portion 35 when thethird conveyor roller 33 c is located approximately in the middle of theoutlet portion 36. By means of the design shown in the drawings, moreover, a high efficiency is realized and the mechanical load on thetubing sections 43 is reduced, thus increasing their service life. Since the pump is designed symmetrically, it can be operated bi-directionally, i.e. in both senses of rotation. Additionally, as the view shown inFIG. 2 exhibits, that theparticular tubing section 43 is not fully squeezed in theinlet portion 35 and in theoutlet portion 36, while it is fully squeezed after theinlet portion 35 by the correspondingconveyor roller 33 b to enable a peristaltic conveying of the particular medium. A pump designed in such a way is also particularly suitable for conveying fluid media in a way gentle to cells, for example blood, because the blood corpuscles are prevented from damage by the particular design of the inlet andoutlet portions - The design of the
tubing holder 2 with a dimensionally stable tubingbed body member 25 and with elasticallyresilient legs tubing holder 2 into the support frame. Even if thelegs bed body member 25 has to maintain its dimensional stability and a precise geometry. This goal is met, amongst else, by the fact that the elastically resilient parts are positioned and stiffened by means of an outer positive fitting support on thesupport frame 1. - From
FIG. 3 , showing a cross sectional view of the assembled pump taken between twotubing sections 43, particularly the clamping fixation of the tubingbed body member 25 to the support frame is evident. Thenotch elements 22 located at the outside of the tubingbed body member 25 engage the slot-shaped cut-outs 13 of thesupport frame 1. Moreover, thenotch elements 22 positively engage anupper web 14 of the support frame, delimiting the slot-shaped cut-outs 13. In order to ensure a high stiffness in the flexible region of the tubingbed body member 25 fixed to thesupport frame 1, thelegs bed body member 25 are positively supported at the outside by theweb 14 of thesupport frame 1. This design particularly also ensures a precise observation of the optimized distances between theconveyor rollers bed body member 25. - The individual
elastic tubing sections 43 additionally support the fixing of the tubingbed body member 25 at thesupport frame 1, since theconveyor rollers rotor 3 load the tubingbed body member 25 in radial direction via thetubing sections 43, such that the fixation thereof to thesupport frame 1 is additionally supported. - The connecting
element 4 is designed such and matched to thetubing holder 2 and to therotor 3 such that theindividual tubing section 43 is led essentially in tangential direction into the tubingbed body member 25 of thetubing holder 2 and also led out there from. - Even if, in the foregoing, reference has made to the embodiment shown in the drawings of a pump with three conveyor rollers, it is understood that the number of conveyor rollers can be practically arbitrarily varied as long as one stays within the scope of the present invention defined in the claims. Thereby, the tubing
bed body member 25 has to enlace therotor 3, depending on the number of conveyor rollers, to such a degree that always at least oneconveyor roller
Enlacement=360°/number of conveyor rollers. - In the case of using such a pump for higher pressure, moreover, it can be advantageous to have always two conveyor rollers engage the flexible tubing section. In this case, the enlacement can be calculated by using the following formula:
Enlacement=2×360°/number of conveyor rollers. - The calculated enlacement is to be understood as a minimal amount of enlacement. Preferably, the enlacement is chosen about 10° higher than the angle of enlacement calculated by means of the foregoing formula. The expression “enlacement” shall be understood as that part of the tubing bed that coaxially surrounds the rotor.
- In recapitulation, the following advantages of a peristaltic pump designed according to the invention may be noticed:
-
- It is of simple design and consists of only a few parts;
- It can be assembled from one side and, thus, is suitable for automatic manufacturing;
- It can be assembled quickly and without tools;
- It shows a high dimensional stability (stiffness) after having been assembled;
- It can be manufactured at low costs;
- It is compact and light;
- It can be designed as one channel or multiple channel pump;
- It is suitable for conveying for example blood, gently conveying the blood cells;
- It can be operated bi-directionally and universally used;
- It reduces pulsation, torque peaks, is resistant to wear-out and, thereby, has a higher efficiency.
Claims (15)
1. Peristaltic pump, with a rotor (3) received in a housing, which is provided with at least one rotatably supported conveyor roller (33 a, 33 b, 33 c), as well as with a tubing holder (2) for receiving of at least one flexible tubing section (43) that is squeezable by the conveyor roller (33 a, 33 b, 33 c) for the peristaltically conveying a medium, characterized in that the housing is constituted by a dimensionally stable support frame (I) and by tubing holder (2), whereby the tubing holder (2) is designed at least partially elastically resilient such that it can be attached to the support frame (1) in the sense of a snap-on connection, and whereby the tubing holder (2) is fixed to the support frame (1) to be dimensionally stable after the attachment.
2. Pump according to claim 1 , characterized in that the tubing holder (2) is provided with a tubing bed body member (25), having a tubing bed at its inner side and two legs (2 a, 2 b) at its end, the latter ones being resiliently elastic in radial direction.
3. Pump according to claim 2 , characterized in that the tubing bed body member (25) at least partially and coaxially enlaces the rotor (3).
4. Pump according to claim 2 , characterized in that the two legs (2 a, 2 b) of the tubing bed body member (25) pass over from a concave shape to a convex shape in a smooth transition in the region of the particular leg end.
5. Pump according to claim 2 , characterized in that the tubing bed body member is designed essentially in the shape of an omega.
6. Pump according to claim 2 , characterized in that the support frame (1) is provided with cut-outs (13) and the legs (2 a, 2 b) of the tubing bed body member (25) at their ends with notch elements (22) for snapingly engaging the cutouts (13) of the support frame (1).
7. Pump according to claim 6 , characterized in that the notch elements (22) are located at the outside of the legs (2 a, 2 b), and that the support frame (1) is provided with a web (14) located above the cut-outs (13), at the side facing the tubing bed body member (25), for positively and/or non-positively supporting the particular leg (2 a, 2 b) of the tubing bed body member (25) at the outside.
8. Pump according to claim 2 , characterized in that the tubing bed body member (25) is designed such that its dimensional stability and fixation at the support frame (1) is supported, in addition to the elastically resilient inherent tenseness of the legs (2 a, 2 b), by the mutal force action of the squeezed tubing section and the squeezed tubing sections (43), respectively.
9. Pump according to claim 2 2, characterized in that the tubing bed body member (25) is provided with a plurality of radially and/or axially extending reinforcing ribs (23, 24).
10. Pump according to claim 2 , characterized in that the inner side of the tubing bed body member (25) is provided with a multitude of groove-like recess (21) for receiving and guiding a plurality of tubing sections (43).
11. Pump according to claim 9 , characterized in that the particular conveyor roller (33 a, 33 b, 33 c) is in the shape of a barrel and extends in axial directions over the groove-like recesses (21).
12. Pump according to claim 2 , characterized in that the particular tubing section is led into and out of the tubing bed body member (25) in substantially tangential direction.
13. Pump according to claim 2 , characterized in that the rotor (3) is provided with at least two conveyor rollers (33 a, 33 b, 33 c), and that the tubing bed body member (25) coaxially enlaces the rotor (3) by an amount of 360° divided by the number of conveyor rollers.
14. Pump according to claim 1 , characterized in that the rotor (3) is provided with three conveyor rollers (33 a, 33 b, 33 c), and the inlet portion (35) is offset around the axis of rotation of the rotor (3) with regard to the outlet portion (36) by 210° to 270°, preferably by approximately 240°.
15. Pump according to claim 3 , characterized in that the two legs (2 a, 2 b) of the tubing bed body member (25) pass over from a concave shape to a convex shape in a smooth transition in the region of the particular leg end.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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CH16352003 | 2003-09-26 | ||
CH1635/03 | 2003-09-26 | ||
PCT/CH2004/000390 WO2005031166A1 (en) | 2003-09-26 | 2004-06-25 | Peristaltic pump |
Publications (1)
Publication Number | Publication Date |
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US20070104599A1 true US20070104599A1 (en) | 2007-05-10 |
Family
ID=34383944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/573,287 Abandoned US20070104599A1 (en) | 2003-09-26 | 2004-06-25 | Peristaltic pump |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070104599A1 (en) |
EP (1) | EP1680600B1 (en) |
AT (1) | ATE381673T1 (en) |
DE (1) | DE502004005771D1 (en) |
WO (1) | WO2005031166A1 (en) |
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US20070134113A1 (en) * | 2005-12-09 | 2007-06-14 | Industrial Technology Research Institute | Peristaltic pump |
US7934912B2 (en) | 2007-09-27 | 2011-05-03 | Curlin Medical Inc | Peristaltic pump assembly with cassette and mounting pin arrangement |
US8062008B2 (en) | 2007-09-27 | 2011-11-22 | Curlin Medical Inc. | Peristaltic pump and removable cassette therefor |
US8083503B2 (en) | 2007-09-27 | 2011-12-27 | Curlin Medical Inc. | Peristaltic pump assembly and regulator therefor |
US9518576B1 (en) * | 2010-07-15 | 2016-12-13 | Elemental Scientific, Inc. | Peristaltic pump |
US20170268496A1 (en) * | 2016-03-21 | 2017-09-21 | John McIntyre | Peristaltic pump |
USD809909S1 (en) | 2013-03-15 | 2018-02-13 | Cook Medical Technologies Llc | Tubing clips |
US20180238318A1 (en) * | 2016-07-29 | 2018-08-23 | W.O.M. World Of Medicine Gmbh | Hose cartridge for a peristaltic pump having elastic legs |
US10113542B2 (en) | 2012-05-24 | 2018-10-30 | Cook Medical Technologies Llc | Peristaltic pump tubing securing system |
CN109372731A (en) * | 2017-04-06 | 2019-02-22 | 珠海意动智能装备有限公司 | Peristaltic pump |
CN114278542A (en) * | 2021-12-28 | 2022-04-05 | 通达创智(厦门)股份有限公司 | Peristaltic pump for multi-tube equivalent liquid conveying |
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GB2460025B (en) * | 2008-05-09 | 2010-04-28 | Brightwell Dispensers Ltd | Peristaltic pump with removable tube |
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US4631008A (en) * | 1985-11-04 | 1986-12-23 | G. H. Stenner & Co., Inc. | Peristaltic pump housing |
US5857843A (en) * | 1995-10-20 | 1999-01-12 | Harvest Technologies Llc | Peristaltic pump with removable rotor |
US7118203B2 (en) * | 2003-08-25 | 2006-10-10 | Hewlett-Packard Development Company, L.P. | Peristaltic pump |
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DE19856453C2 (en) * | 1998-12-09 | 2002-04-25 | Rheotec Ag Goldach | Roller pump for peristaltic delivery of liquid or gaseous media |
CA2392655C (en) * | 2000-09-22 | 2007-05-01 | Sorenson Development, Inc. | Flexible tube positive displacement pump |
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2004
- 2004-06-25 WO PCT/CH2004/000390 patent/WO2005031166A1/en active IP Right Grant
- 2004-06-25 AT AT04738031T patent/ATE381673T1/en not_active IP Right Cessation
- 2004-06-25 DE DE502004005771T patent/DE502004005771D1/en not_active Expired - Fee Related
- 2004-06-25 US US10/573,287 patent/US20070104599A1/en not_active Abandoned
- 2004-06-25 EP EP04738031A patent/EP1680600B1/en not_active Not-in-force
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US3723030A (en) * | 1971-03-03 | 1973-03-27 | Buchler Instr Division | Peristaltic pump with stacked components |
US4631008A (en) * | 1985-11-04 | 1986-12-23 | G. H. Stenner & Co., Inc. | Peristaltic pump housing |
US5857843A (en) * | 1995-10-20 | 1999-01-12 | Harvest Technologies Llc | Peristaltic pump with removable rotor |
US7118203B2 (en) * | 2003-08-25 | 2006-10-10 | Hewlett-Packard Development Company, L.P. | Peristaltic pump |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7866960B2 (en) | 2005-12-09 | 2011-01-11 | Industrial Technology Research Institute | Peristaltic pump |
US20070134113A1 (en) * | 2005-12-09 | 2007-06-14 | Industrial Technology Research Institute | Peristaltic pump |
US7934912B2 (en) | 2007-09-27 | 2011-05-03 | Curlin Medical Inc | Peristaltic pump assembly with cassette and mounting pin arrangement |
US8062008B2 (en) | 2007-09-27 | 2011-11-22 | Curlin Medical Inc. | Peristaltic pump and removable cassette therefor |
US8083503B2 (en) | 2007-09-27 | 2011-12-27 | Curlin Medical Inc. | Peristaltic pump assembly and regulator therefor |
US10309389B1 (en) * | 2010-07-15 | 2019-06-04 | Elemental Scientific, Inc. | Peristaltic pump |
US9518576B1 (en) * | 2010-07-15 | 2016-12-13 | Elemental Scientific, Inc. | Peristaltic pump |
US10830227B2 (en) * | 2010-07-15 | 2020-11-10 | Elemental Scientific, Inc. | Peristaltic pump |
US9863413B1 (en) * | 2010-07-15 | 2018-01-09 | Elemental Scientific, Inc. | Peristaltic pump |
US20190353158A1 (en) * | 2010-07-15 | 2019-11-21 | Elemental Scientific Inc. | Peristaltic pump |
US10113542B2 (en) | 2012-05-24 | 2018-10-30 | Cook Medical Technologies Llc | Peristaltic pump tubing securing system |
USD809909S1 (en) | 2013-03-15 | 2018-02-13 | Cook Medical Technologies Llc | Tubing clips |
US10151309B2 (en) * | 2016-03-21 | 2018-12-11 | John McIntyre | Peristaltic pump |
US20170268496A1 (en) * | 2016-03-21 | 2017-09-21 | John McIntyre | Peristaltic pump |
US20180238318A1 (en) * | 2016-07-29 | 2018-08-23 | W.O.M. World Of Medicine Gmbh | Hose cartridge for a peristaltic pump having elastic legs |
US11098706B2 (en) * | 2016-07-29 | 2021-08-24 | W.O.M. World Of Medicine Gmbh | Hose cartridge for a peristaltic pump having elastic legs |
CN109372731A (en) * | 2017-04-06 | 2019-02-22 | 珠海意动智能装备有限公司 | Peristaltic pump |
CN114278542A (en) * | 2021-12-28 | 2022-04-05 | 通达创智(厦门)股份有限公司 | Peristaltic pump for multi-tube equivalent liquid conveying |
Also Published As
Publication number | Publication date |
---|---|
EP1680600A1 (en) | 2006-07-19 |
WO2005031166A1 (en) | 2005-04-07 |
ATE381673T1 (en) | 2008-01-15 |
EP1680600B1 (en) | 2007-12-19 |
DE502004005771D1 (en) | 2008-01-31 |
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Legal Events
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AS | Assignment |
Owner name: ISMATEC SA LABORATORIUMSTECHNIK, SWITZERLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MICHELS, STEPHAN;FASSLER, RENE;SCHARER, CORINNE;AND OTHERS;REEL/FRAME:020305/0833;SIGNING DATES FROM 20071106 TO 20071212 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |