WO2003027503A1 - Pompe piezo-electrique - Google Patents

Pompe piezo-electrique Download PDF

Info

Publication number
WO2003027503A1
WO2003027503A1 PCT/IL2002/000756 IL0200756W WO03027503A1 WO 2003027503 A1 WO2003027503 A1 WO 2003027503A1 IL 0200756 W IL0200756 W IL 0200756W WO 03027503 A1 WO03027503 A1 WO 03027503A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
pump
peristaltic pump
pressing
elements
Prior art date
Application number
PCT/IL2002/000756
Other languages
English (en)
Inventor
Efron Razi
Gregory Gelman
Ilya Akselrud
Ofra Kalisky
Yehoshua Kalisky
Original Assignee
Digipump Ltd.
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 Digipump Ltd. filed Critical Digipump Ltd.
Publication of WO2003027503A1 publication Critical patent/WO2003027503A1/fr

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
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/082—Machines, pumps, or pumping installations having flexible working members having tubular flexible members the tubular flexible member being pressed against a wall by a number of elements, each having an alternating movement in a direction perpendicular to the axes of the tubular member and each having its own driving mechanism
    • 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
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/04—Pumps having electric drive
    • F04B43/043—Micropumps
    • F04B43/046—Micropumps with piezoelectric drive
    • 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
    • F04B43/09—Pumps having electric drive
    • F04B43/095—Piezoelectric drive
    • 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
    • F04B43/10—Pumps having fluid drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • F16K7/02—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm
    • F16K7/04—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force
    • F16K7/045—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force by electric or magnetic means

Definitions

  • the present invention relates to peristaltic pumps. More particularly, the
  • invention relates to an improved piezoelectric-based peristaltic pump capable of
  • the liquid channel, or elastic tube, that is used for dispensing liquids, is unblocked,
  • Fluid pumping devices have a wide variety of applications and are designed
  • fluid pumping devices are incorporated into diagnostic systems that require a supply of small and accurate quantities of fluid.
  • the accuracy of the analysis is (strongly) dependent on the pumping device.
  • pumps of this type are capable of dispensing only
  • WO 00/28213 discloses a two-layer pump structure basically comprising a
  • the dispensing channel disclosed in this publication has a flowing rate smaller than 10 / /min. .
  • This structure has several drawbacks, one of which is that
  • the channel's membranes may wear rather fast. Another drawback is that the channel may be blocked due to liquids' residues, which, after emptying
  • this type of pump is capable of dispensing liquids in the range smaller than 10 i/min. .
  • US 5,759,015 discloses a pump in which the liquid is displaced by the application of pressure on a diaphragm by a piezoelectric element.
  • micro-pump will not function 'at all, since the presence of the gas bubbles
  • capillary tube is used
  • the present invention relates to a peristaltic pump, which comprises: (a) A flexible
  • each piezoelectric actuator is attached to at least one pressing
  • each pressing element has a cross-section shape of essentially a right- angle triangle.
  • pressing element directs to the desired flow direction, one orthogonal side of the triangle faces the piezoelectric actuator, and the other orthogonal side to
  • pairs of pressing elements are arranged along a portion of the
  • two pressing elements are attached to two opposing sides of one piezoelectric actuator, to alternatively exert
  • each piezoelectric element when viewed in another embodiment of the invention, each piezoelectric element
  • the timing and control means is a microprocessor-based controller.
  • the pump further comprises: (a) driving circuitry, for driving
  • FIG. 2a-2c schematically illustrate a typical structure of a pump
  • - Figs. 3 a- 3c schematically illustrate a typical structure of a pump, according to still another embodiment of the present invention
  • - Fig. 4 is a block diagram illustrating a system for controlling a pump
  • - Fig. 5 is a graph showing the relationship between the flow rate and
  • the invention is directed to an improved piezoelectric-based peristaltic
  • said pump preferably comprising a conventional
  • wave-like pressure is meant a sequential application of pressure at a
  • FIGs. 1A, IB, and 1C illustrate a structure of a piezoelectric pump, according
  • Fig. 1A illustrates a
  • the pressing element 12 relating to a first side (generally the longer one) of the right angle of the cross-section triangle is the one affixed to actuating
  • hypotenuse surface faces the flow direction
  • An angle of the cross-section triangle is in contact with the outer surface of dispensing tube 10, as shown in detail A.
  • angle P is determined so as to achieve an optimized liquid flow
  • timing of the activation of each pair of pressing elements is performed in a sequential manner, in order to produce a wave-like flow.
  • Figure IB depicts a cross-section area of dispensing tube 10, piezoelectric
  • the mechanical housing in which the major elements of the pump are contained.
  • the dimensions are, for
  • a liquid is dispensed through a regular
  • the inner diameter is, for example, 0.5-2 mm.
  • pairs of actuator elements are aligned essentially along a longitudinal line to render the spacing between each two
  • each piezo-electric actuating element is affixed one surface of a pressing element.
  • the cross-section of the pressing element is essentially a
  • pressing element has an angle a P such that 0° ⁇ a P « 90° , and a same
  • controller one task of which is to allow determining the supply rate of the pump, i.e., by allowing controlling the parameters of the pumping
  • the controller is capable of changing the capacity of the pump within a
  • the capacity of the pump disclosed herein may be changed, automatically or manually, while the pump is dispensing liquid(s).
  • Figs. 2A, 2B, and 2C illustrate a structure of a pump, according to another
  • the pump of this embodiment is more economical with respect to the pump of Fig. 1, as it requires half the number
  • Fig. 2A depicts the
  • piezoelectric element 21 and the activation of piezoelectric element 24, thereby causing piezoelectric element 21 to return to its initial position
  • piezoelectric element 24 to bend (see 2C), thereby achieving similar effects
  • valve is kept open (now by pressing element 26), and the liquid is pushed further by
  • n 27 mm.
  • Figs. 3A, 3B, and 3C illustrate a structure of a piezo-hydraulic pump, according to another embodiment of the present invention.
  • the pump has
  • the piezoelectric element In the first state the piezoelectric element is inactivated (i.e., no voltage is supplied to it), in the second state it is
  • tube 35a has a larger diameter
  • piston 39 travels a longer distance than piston 38.
  • Step two (Fig. 3B) — a positive voltage (not shown) is supplied to
  • Step three (Fig. 3C) - a negative voltage (not shown) is supplied to
  • piezoelectric element 31 which causes it to be in its contracted state, wherein hydraulic liquid is pushed out from chamber 34 so as to elongate piston 37, thereby blocking the outlet of dispensing tube 10. Contraction of piezoelectric element 31 also causes chambers 35 and 36 to increase their volume, thereby causing pistons 38 and 39 to withdraw and release
  • one operating cycle of the latter pump might comprise
  • the present invention is therefore characterized by the following novel features:
  • the first feature is the utilization of the dispensing tube itself as
  • the second novel feature is affixing
  • pressing elements having a unique shape, i.e., preferably a right-angle triangle, to piezoelectric actuator elements, through which pressure is
  • Fig. 4 schematically illustrates a general layout and functioning of a system
  • the piezoelectric elements (not shown) of pump 41 are connected to voltage excitation distributor 42 that transfers the voltage required for the functioning of each pair of piezoelectric
  • Power supply 43 is the voltage source for both the voltage excitation distributor and for controller 44 (generally a
  • microprocessor and it is capable of supplying positive and negative
  • Microprocessor-based controller 44 determines the activation timing of each piezoelectric element, as set by the pump operator/user.
  • Fig. 5 is a graph showing the 'relationship between the flow rate of the pump
  • the structure of the micro-pump disclosed herein is very simple, since, unlike most of the prior art pumping devices, it does not contain sealing layers, glass elements, membranes or valves. Such elements are not required in the pump of the present invention, since the elasticity characteristics of portions of the
  • dispensing tube are utilized as membrane substitutes. This is advantageous since whenever the elasticity of the portion becomes poor, the pump can be

Landscapes

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

Abstract

L'invention concerne une pompe péristaltique, qui comprend un tube souple pour distribuer un liquide, une pluralité d'actionneurs piézo-électriques placés en travers d'une partie du tube afin d'appliquer une pression sur sa surface extérieure de façon à l'écraser. Les actionneurs piézo-électriques sont activés séquentiellement par des moyens de temporisation et de commande afin d'écraser séquentiellement des points le long de la surface du tube, de manière à produire un écoulement de liquide dans le tube. Chaque actionneur piézo-électrique est fixé à un ou des élément(s) presseur(s) qui applique(nt) une pression sur le tube lorsque les actionneurs piézo-électriques sont actionnés. Chaque élément presseur présente une section de triangle essentiellement rectangle, dont un angle aigu est dirigé dans le sens d'écoulement voulu pour forcer le liquide à s'écouler dans ce sens. Dans une forme de réalisation de l'invention, des paires d'éléments presseurs sont aménagés face à face le long d'une partie du tube, en vue de presser simultanément la partie du tube située entre les éléments de chaque paire.
PCT/IL2002/000756 2001-09-24 2002-09-12 Pompe piezo-electrique WO2003027503A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL145583 2001-09-24
IL14558301A IL145583A0 (en) 2001-09-24 2001-09-24 Piezoelectric pump for dispensing small quantities of liquids

Publications (1)

Publication Number Publication Date
WO2003027503A1 true WO2003027503A1 (fr) 2003-04-03

Family

ID=11075808

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2002/000756 WO2003027503A1 (fr) 2001-09-24 2002-09-12 Pompe piezo-electrique

Country Status (2)

Country Link
IL (1) IL145583A0 (fr)
WO (1) WO2003027503A1 (fr)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004044424A1 (fr) * 2002-11-14 2004-05-27 Q-Core Ltd. Pompe peristaltique
US7467751B2 (en) * 2002-10-15 2008-12-23 Wisconsin Alumni Research Foundation Methods and apparata for precisely dispensing microvolumes of fluids
DE102008026851A1 (de) * 2008-06-05 2009-12-10 Siemens Aktiengesellschaft Quetschventil
US8029253B2 (en) 2004-11-24 2011-10-04 Q-Core Medical Ltd. Finger-type peristaltic pump
US8142400B2 (en) 2009-12-22 2012-03-27 Q-Core Medical Ltd. Peristaltic pump with bi-directional pressure sensor
RU2451227C2 (ru) * 2007-04-05 2012-05-20 Асахи Брюэрис, Лтд. Устройство запирания потока текучей среды
US8308457B2 (en) 2004-11-24 2012-11-13 Q-Core Medical Ltd. Peristaltic infusion pump with locking mechanism
US8337168B2 (en) 2006-11-13 2012-12-25 Q-Core Medical Ltd. Finger-type peristaltic pump comprising a ribbed anvil
US8371832B2 (en) 2009-12-22 2013-02-12 Q-Core Medical Ltd. Peristaltic pump with linear flow control
WO2013041703A1 (fr) * 2011-09-21 2013-03-28 Sanofi-Aventis Deutschland Gmbh Pompe péristaltique et procédé de transport d'un matériau à l'aide d'une pompe péristaltique
US8535025B2 (en) 2006-11-13 2013-09-17 Q-Core Medical Ltd. Magnetically balanced finger-type peristaltic pump
WO2015166051A1 (fr) * 2014-04-30 2015-11-05 Commissariat à l'énergie atomique et aux énergies alternatives Systeme de modulation de la quantite de liquide delivre par une micro-pompe a commande piezo-electrique
US9333290B2 (en) 2006-11-13 2016-05-10 Q-Core Medical Ltd. Anti-free flow mechanism
US9457158B2 (en) 2010-04-12 2016-10-04 Q-Core Medical Ltd. Air trap for intravenous pump
US9674811B2 (en) 2011-01-16 2017-06-06 Q-Core Medical Ltd. Methods, apparatus and systems for medical device communication, control and localization
US9726167B2 (en) 2011-06-27 2017-08-08 Q-Core Medical Ltd. Methods, circuits, devices, apparatuses, encasements and systems for identifying if a medical infusion system is decalibrated
US9855110B2 (en) 2013-02-05 2018-01-02 Q-Core Medical Ltd. Methods, apparatus and systems for operating a medical device including an accelerometer
WO2022200189A1 (fr) * 2021-03-22 2022-09-29 Tomorrow's Motion GmbH Pompe de fluide et agencement générateur de force ayant la pompe de fluide
US11679189B2 (en) 2019-11-18 2023-06-20 Eitan Medical Ltd. Fast test for medical pump

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598506A (en) * 1969-04-23 1971-08-10 Physics Int Co Electrostrictive actuator
FR2337824A1 (fr) * 1976-01-12 1977-08-05 Vial Sarl Pompe pour l'ecoulement de liquide, telle que pompe a perfusion
JPH03107585A (ja) * 1989-09-20 1991-05-07 Fujitsu Ltd 圧電ポンプ
US5338164A (en) * 1993-05-28 1994-08-16 Rockwell International Corporation Positive displacement micropump
DE19515532A1 (de) * 1995-04-27 1996-10-31 Volker Von Hertel Verfahren und Schlauchpumpe zum Fördern eines Fluids
WO1997042412A1 (fr) * 1996-05-06 1997-11-13 Pumping Systems Technologies Pty. Limited Pompe peristaltique pseudo statique
EP1031358A1 (fr) * 1999-02-23 2000-08-30 Fresenius Vial SA Procédé de contrôle d'une pompe linéaire péristaltique

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598506A (en) * 1969-04-23 1971-08-10 Physics Int Co Electrostrictive actuator
FR2337824A1 (fr) * 1976-01-12 1977-08-05 Vial Sarl Pompe pour l'ecoulement de liquide, telle que pompe a perfusion
JPH03107585A (ja) * 1989-09-20 1991-05-07 Fujitsu Ltd 圧電ポンプ
US5338164A (en) * 1993-05-28 1994-08-16 Rockwell International Corporation Positive displacement micropump
DE19515532A1 (de) * 1995-04-27 1996-10-31 Volker Von Hertel Verfahren und Schlauchpumpe zum Fördern eines Fluids
WO1997042412A1 (fr) * 1996-05-06 1997-11-13 Pumping Systems Technologies Pty. Limited Pompe peristaltique pseudo statique
EP1031358A1 (fr) * 1999-02-23 2000-08-30 Fresenius Vial SA Procédé de contrôle d'une pompe linéaire péristaltique

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7467751B2 (en) * 2002-10-15 2008-12-23 Wisconsin Alumni Research Foundation Methods and apparata for precisely dispensing microvolumes of fluids
US7695255B2 (en) 2002-11-14 2010-04-13 Q-Core Medical Ltd Peristaltic pump
WO2004044424A1 (fr) * 2002-11-14 2004-05-27 Q-Core Ltd. Pompe peristaltique
US9657902B2 (en) 2004-11-24 2017-05-23 Q-Core Medical Ltd. Peristaltic infusion pump with locking mechanism
US8029253B2 (en) 2004-11-24 2011-10-04 Q-Core Medical Ltd. Finger-type peristaltic pump
US9404490B2 (en) 2004-11-24 2016-08-02 Q-Core Medical Ltd. Finger-type peristaltic pump
US10184615B2 (en) 2004-11-24 2019-01-22 Q-Core Medical Ltd. Peristaltic infusion pump with locking mechanism
US8308457B2 (en) 2004-11-24 2012-11-13 Q-Core Medical Ltd. Peristaltic infusion pump with locking mechanism
US8678793B2 (en) 2004-11-24 2014-03-25 Q-Core Medical Ltd. Finger-type peristaltic pump
US8337168B2 (en) 2006-11-13 2012-12-25 Q-Core Medical Ltd. Finger-type peristaltic pump comprising a ribbed anvil
US9333290B2 (en) 2006-11-13 2016-05-10 Q-Core Medical Ltd. Anti-free flow mechanism
US8535025B2 (en) 2006-11-13 2013-09-17 Q-Core Medical Ltd. Magnetically balanced finger-type peristaltic pump
US9581152B2 (en) 2006-11-13 2017-02-28 Q-Core Medical Ltd. Magnetically balanced finger-type peristaltic pump
US9056160B2 (en) 2006-11-13 2015-06-16 Q-Core Medical Ltd Magnetically balanced finger-type peristaltic pump
US10113543B2 (en) 2006-11-13 2018-10-30 Q-Core Medical Ltd. Finger type peristaltic pump comprising a ribbed anvil
RU2451227C2 (ru) * 2007-04-05 2012-05-20 Асахи Брюэрис, Лтд. Устройство запирания потока текучей среды
DE102008026851A1 (de) * 2008-06-05 2009-12-10 Siemens Aktiengesellschaft Quetschventil
US8920144B2 (en) 2009-12-22 2014-12-30 Q-Core Medical Ltd. Peristaltic pump with linear flow control
US8142400B2 (en) 2009-12-22 2012-03-27 Q-Core Medical Ltd. Peristaltic pump with bi-directional pressure sensor
US8371832B2 (en) 2009-12-22 2013-02-12 Q-Core Medical Ltd. Peristaltic pump with linear flow control
US9457158B2 (en) 2010-04-12 2016-10-04 Q-Core Medical Ltd. Air trap for intravenous pump
US9674811B2 (en) 2011-01-16 2017-06-06 Q-Core Medical Ltd. Methods, apparatus and systems for medical device communication, control and localization
US9726167B2 (en) 2011-06-27 2017-08-08 Q-Core Medical Ltd. Methods, circuits, devices, apparatuses, encasements and systems for identifying if a medical infusion system is decalibrated
WO2013041703A1 (fr) * 2011-09-21 2013-03-28 Sanofi-Aventis Deutschland Gmbh Pompe péristaltique et procédé de transport d'un matériau à l'aide d'une pompe péristaltique
US10519946B2 (en) 2011-09-21 2019-12-31 Sanofi-Aventis Deutschland Gmbh Peristaltic pump and method of transporting material with a peristaltic pump
US9855110B2 (en) 2013-02-05 2018-01-02 Q-Core Medical Ltd. Methods, apparatus and systems for operating a medical device including an accelerometer
FR3020632A1 (fr) * 2014-04-30 2015-11-06 Commissariat Energie Atomique Systeme de modulation de la quantite de liquide delivre par une micro-pompe a commande piezo-electrique
WO2015166051A1 (fr) * 2014-04-30 2015-11-05 Commissariat à l'énergie atomique et aux énergies alternatives Systeme de modulation de la quantite de liquide delivre par une micro-pompe a commande piezo-electrique
US11679189B2 (en) 2019-11-18 2023-06-20 Eitan Medical Ltd. Fast test for medical pump
WO2022200189A1 (fr) * 2021-03-22 2022-09-29 Tomorrow's Motion GmbH Pompe de fluide et agencement générateur de force ayant la pompe de fluide

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