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Publication numberUS3606592 A
Publication typeGrant
Publication date20 Sep 1971
Filing date20 May 1970
Priority date20 May 1970
Publication numberUS 3606592 A, US 3606592A, US-A-3606592, US3606592 A, US3606592A
InventorsJoseph P Madurski, Ambrose Tomala
Original AssigneeBendix Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Fluid pump
US 3606592 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

sept. 20, 1971 J, P, MADURSK| ETAL 3,606,592

FLUID PUMP Filed may 2o, 1970 LL .VI Jrlfl United Smm Patent Ot 3,606,592 Patented Sept. 2o, 1971 3,606,592 FLUID PUMP Joseph P. Madurski and Ambrose Tomala, Royal Oak, Mich., assignors to The Bendix Corporation Filed May 20, 1970, Ser. No. 39,952 Int. Cl. F04b 19/02, 43/02 U.S. Cl. 417-413 6 Claims ABSTRACT OF THE DISCLOSURE A displacement element for a fluid pump comprised of opposed, connected members of a memory heat treatable material such as 55-Nitinol `with an electrical control clrcuit used to alternately cause each of the members to assume its memory heat treated configuration, thereby causing cyclical movement of the members. This movement is utilized to create the pumping action by embedding these elements in a diaphragm element to create a diaphragm pump.

BACKGROUND OF THE INVENTION The great need for a practical artificial heart and the resulting widespread research and development efforts expended towards providing for this need has made clear the special design requirements necessary in order for any such device to be successful.

These requirements include compactness, simplicity, reliability, and the ability to operate efficiently on a minimum power input.

In providing these requirements, it would be desirable to have a direct and efficient conversion of electrical or thermal energy to mechanical energy with a minimum of mechanical parts. Prior art pumps have included those having piezoelectric diaphragms, in which a piezoelectric ceramic material such as barium titanate is alternately pulsed to provide a direct mechanical output. While satisfactory for some applications, these devices suffer from the drawback of relatively low displacements of the piezoelectric material, leading to high power consumption, poor efficiencies, and complexity of design in the power circuit and valving, hence rendering such devices unsatisfactory for artificial heart or cardiac assist applications.

Hence, it is an object of the present invention to provide a displaceable element arrangement for pump applications which directly converts electrical or thermal energy into a mechanical output with a minimum number of parts.

SUMMARY OF THE INVENTION This object and others which will become apparent upon a reading of the following specification and claims are accomplished by providing a pumping member including a pair of interconnected members of a memory heat treatable material such as 55-Nitinol, heat treated in opposed configurations so that causing these members to alternately assume their heat treated configuration will provide a cyclical displacement of the pumping member.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. ll is a sectional view of a pump utilizing the pumping member according to the present invention.

FIG. 2 is a front elevation of the pumping member shown in FIG. 1, together with a schematic representation of the electrical control circuit.

FIG. 3 is a view of the section created by cutting plane 3-3 in FIG. 2.

FIG. 4 is a sectional view of a double acting pump incorporating a pumping member according to the present invention.

DETAILED DESCRIPTION In the following detailed description, certain specific terminology will be employed for the sake of clarity and a specific embodiment and application will be described in order to provide a complete understanding of the invention, but it is to be understood that the invention is not so limited, and may be practiced in a variety of forms and embodiments.

Referring to the drawings, and particularly FIG. 1, a diaphragm type pump 10 is shown utilizing a displacement element pumping member according to the present invention as the diaphragm 12. The diaphragm 12 is secured between housing members 14, 16 to divide the space formed by the members 14, 16 into a pair of chambers 18, 20. Movement of the diaphragm 12 to increase the volume of chamber 18 draws fluid into the inlet 22 via check valve 24. Fluid is prevented from reentering the chamber 18 from the outlet 26 by means of the check valve 28.

Movement of the diaphragm 12 so as to reduce the Volume of the chamber 18 causes fluid contained therein to be advanced through the outlet 26 via check valve 28, being prevented from backing out the inlet 22 by the action of the check valve 24.

As shown in FIGS. 2 and 3, the diaphragm 12 is comprised of a flexible rubber or plastic body 30 having embedded therein grids 32, 34 of wire or strip elements extending transversely to each other.

The material of which these grids are formed is of a material having a heat treat memory, such as 55-Nitinol.

55-Nitinol is the generic name given to a group of alloys having 53-57 percent nickel with the remainder titanium.

This material has the characteristic above referred to: a mechanical heat treat memory.

SS-Nitinol, if constrained to have a particular shape while heat treated above a certain temperature (approximately 900 F.) will return to this configuration with considerable force, even if being plastically deformed in the interim, upon being heated to a certain temperature which may vary, depending on the composition of the alloy from -60 F. to +300 F.

The straining to an intermediate shape differing from the memory heat treat shape, giving the restorative heat treat (RHT), and cooling to ambient temperatures is referred to as the yStrain-Heat-Cool cycle (SHC) and may be repeated over and over on the order of millions of cycles, which is the basic mechanism relied on in the present invention.

The precise behavioral characteristics of the displacement members will vary with the composition, temperature, and percent of strain, and in providing an actual design, all of these factors must be considered in arriving at the specific performance characteristic desired.

These characteristics have been established to a considerable extent and details thereof are contained in numerous patents and applications including the following U.S. patents: 3,174,851 (basic composition of matter patent), 3,351,463; 3,352,650; 3,352,722; 3,391,882; 3,403,238; 3,416,342. Publications include Materials and Processes for the 70s, Investigations of the Unique Memory Properties of 55-Nitinol Alloy, Proceedings of the 15 National SAMPE Symposium and Exhibition, Apr. 29-May 1, 1969, pp. 265-274; A Summary of Recent Research on the Nitinol Alloys and Their Potential Application in Ocean Engineering, Ocean Engineering, l, -120 (1968).

Inasmuch as the details of these characteristics do not in themselves form a part of the present invention and are Well known and available to the public as indicated by the above references, it is not felt necessary to include data on these in detail.

The grids 32, 34 are given memory heat treats so as to have opposing configurations. That is, in the position shown in FIG. 3, one of the grids is in its memory heat treat configuration while the other is deformed out of its memory heat treat configuration, while conversely, in the diaphragm position shown in phantom in FIG. 3, the other of the grids is in its memory heat treat configuration while the one grid is deformed out of its memory heat treat configuration.

As shown schematically in FIG. 2, a power suppy unit 36 is shown, which alternately and successively supplies electrical power to the grids 32 and 34. This electrical power is selected to be of a sufiicient level to cause the grid supplied to be raised to or above its RHT temperature, thus causing the grid supplied to assume its memory heat treat configuration.

If the grid so supplied is in a deformed condition at the moment it reaches its RHT temperature, it will snap back with considerable force. This action has a two-fold effect: movement of the diaphragm causes the pumping action to take place; and the other grid by means of the driving connection therebetween formed by the rubber sheet 30 is deformed out of its MHT configuration. Upon the application of the electrical energy to the grid so deformed, the diaphragm will then snap back to its original position, while deforming again the other grid which has then cooled below its RHT temperature and so on.

The movement of the fiuid through the unit will tend to prevent the temperature of the grids from building up beyond their respective RHT temperatures. This RHT temperature is selected to be well above ambient conditions so that the electrical energy must be applied in order to cause the respective grids to assume their MHT configurations.

The grid sizes, the power levels, and frequency of the pulses, the insulating needs between the grids and the other specific details of design will vary with the particular composition of the grid material, the operating temperature involved, the performance characteristics required, the fluid to be pumped, the mechanical strain induced by the diaphragms movement, the properties of the diaphragm sheet 30, and a number of other factors. Hence, in arriving at a specific design, all of these factors must be considered, and by applying general engineering principles, their effect on the design characteristics may be foreseen and a desired performance provided.

This basic arrangement may be extended to a great number of other pump configurations and installations as shown in FIG. 4, which illustrates a double acting pump, which advances fiuid from a second inlet 40 to a second outlet 42 on the back stroke of the diaphragm.

Of course, in-line, circulating, ganged, etc., pump installations in a variety of environments are possible in this same context.

Similarly, the particular configuration of the opposed members 32, 34 may be varied as required, as leaf, strip or other forms are well within the scope of the present invention.

In this same context, other applications of the opposed member mechanism are possible in which the large displacement, direct energy conversion characteristic may be used to advantage.

From the above description, it can be appreciated that an extremely simple, effective, and reliable displacement device suitable for artificial heart and cardiac assist device applications has been provided, without the need for complex mechanisms.

What is claimed is:

1. A fiuid pump comprising:

a housing member defining a pumping chamber;

a displacement element disposed in said chamber including a first member having a memory configuration to which it may be controllably restored; a second member having a memory configuration to which it may be controllably restored; means drivingly connecting said first and second members so that when either of said elements is in its memory configuration the other is distorted out of its memory configuration, control means alternately causing said first and second members to tend to assume their memory configurations to cause said displacement element to alternately move to a position corresponding to each of said members memory configurations;

means for creating a pumping action through said chamber in response to said movement of said displacement element, whereby a pumping action may be created by said control means.

2. The pump of claim 1 wherein said first and second members are of a memory heat treatable material and wherein each of said control means restores said memory configurations by heating each of said members to its restorative temperature.

3. The pump of claim 2 further including a plurality of each of such first and second members and wherein said means drivingly connecting said plurality of first and second members includes a diaphragm member and means embedding said plurality of first and second members in said diaphragm member.

4. The pump of claim 3 wherein said plurality of first and second members extend transversely to each other.

5. The pump of claim 2 wherein said first and second members are composed of -Nitinol.

`6. The pump of claim 2 wherein said first and second members are composed of an alloy having 53-57 percent by weight of nickel with the remainder titanium.

References Cited UNITED STATES PATENTS 2,630,760 3/1953 Ryba 417-413 3,516,082 6/1970 Cooper S40-227.1

ROBERT M. WALKER, Primary Examiner U.S. Cl. X.R. 92--103

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3827426 *16 Jul 19716 Aug 1974Page MProsthetic pump
US3890977 *1 Mar 197424 Jun 1975Bruce C WilsonKinetic memory electrodes, catheters and cannulae
US4170990 *27 Jan 197816 Oct 1979Fried. Krupp Gesellschaft Mit Beschrankter HaftungMethod for implanting and subsequently removing mechanical connecting elements from living tissue
US4411655 *30 Nov 198125 Oct 1983Schreck David MApparatus and method for percutaneous catheterization
US44274701 Sep 198124 Jan 1984University Of UtahVacuum molding technique for manufacturing a ventricular assist device
US4439197 *15 Mar 198227 Mar 1984Olympus Optical Co., Ltd.Medical capsule device
US4468177 *27 Apr 198128 Aug 1984Strimling Walter EDiaphragm pump arrangement in which alternately expanded and contracted chambers are used independently
US4473423 *16 Sep 198325 Sep 1984University Of UtahArtificial heart valve made by vacuum forming technique
US4485816 *25 Jun 19814 Dec 1984AlchemiaShape-memory surgical staple apparatus and method for use in surgical suturing
US4507115 *28 Feb 198426 Mar 1985Olympus Optical Co., Ltd.Medical capsule device
US4524466 *30 Nov 198325 Jun 1985Southwest Research InstituteContinuous rotation reversible pitch axial thrust heart pump
US4569634 *27 Sep 198411 Feb 1986Mantell Myron EFailure sensing diaphragm for a diaphragm pump
US4636149 *29 Apr 198613 Jan 1987Cordis CorporationDifferential thermal expansion driven pump
US4648807 *14 May 198510 Mar 1987The Garrett CorporationCompact piezoelectric fluidic air supply pump
US4697674 *17 Jun 19856 Oct 1987Industrie Pirelli S.P.AOleoelastic energy accumulator
US4697989 *11 Oct 19846 Oct 1987Gena PerlovElectrodynamic peristaltic fluid transfer device and method
US4786240 *8 Aug 198722 Nov 1988Applied Biotechnologies, Inc.Pumping apparatus with an electromagnet affixed to the septum
US4838889 *23 Jul 198613 Jun 1989University Of Utah Research FoundationVentricular assist device and method of manufacture
US4859152 *19 Nov 198722 Aug 1989Matsushita Electric Works, Ltd.Electromagnetic air pump
US5062770 *11 Aug 19895 Nov 1991Systems Chemistry, Inc.Fluid pumping apparatus and system with leak detection and containment
US5129794 *26 Aug 199114 Jul 1992Hewlett-Packard CompanyPump apparatus
US5215446 *23 Oct 19911 Jun 1993Brother Kogyo Kabushiki KaishaPiezoelectric pump which uses a piezoelectric actuator
US5435152 *18 Feb 199425 Jul 1995Microcool CorporationAir treating device having a bellows compressor actuable by memory-shaped metal alloy elements
US5725363 *24 Jun 199610 Mar 1998Forschungszentrum Karlsruhe GmbhMicromembrane pump
US6017117 *31 Oct 199525 Jan 2000Hewlett-Packard CompanyPrinthead with pump driven ink circulation
US619013630 Aug 199920 Feb 2001Ingersoll-Rand CompanyDiaphragm failure sensing apparatus and diaphragm pumps incorporating same
US62276602 Sep 19998 May 2001Hewlett-Packard CompanyPrinthead with pump driven ink circulation
US6902549 *1 Jul 20027 Jun 2005Koninklijke Philips Electronics, N.V.Fluid-advancing fiber
US71350764 Aug 200314 Nov 2006Lockheed Martin CorporationMemory metal activation system
US7431574 *21 Dec 20047 Oct 2008Alps Electric Co., Ltd.Pump actuated by diaphragm
US7539016 *30 Dec 200526 May 2009Intel CorporationElectromagnetically-actuated micropump for liquid metal alloy enclosed in cavity with flexible sidewalls
US772718113 Apr 20051 Jun 2010Abbott Diabetes Care Inc.Fluid delivery device with autocalibration
US7753873 *29 Dec 200813 Jul 2010Abbott Diabetes Care Inc.Fluid delivery device with autocalibration
US7753874 *29 Dec 200813 Jul 2010Abbott Diabetes Care Inc.Fluid delivery device with autocalibration
US776449918 May 200927 Jul 2010Intel CorporationElectromagnetically-actuated micropump for liquid metal alloy
US7766864 *29 Dec 20083 Aug 2010Abbott Diabetes Care Inc.Fluid delivery device with autocalibration
US776840817 May 20063 Aug 2010Abbott Diabetes Care Inc.Method and system for providing data management in data monitoring system
US778724826 Jun 200631 Aug 2010International Business Machines CorporationMulti-fluid cooling system, cooled electronics module, and methods of fabrication thereof
US7841385 *26 Jun 200630 Nov 2010International Business Machines CorporationDual-chamber fluid pump for a multi-fluid electronics cooling system and method
US78847292 Aug 20108 Feb 2011Abbott Diabetes Care Inc.Method and system for providing data management in data monitoring system
US7889877 *28 Jun 200415 Feb 2011Nxp B.V.Device for generating a medium stream
US792245829 Dec 200812 Apr 2011Abbott Diabetes Care Inc.Variable volume, shape memory actuated insulin dispensing pump
US79487574 Aug 201024 May 2011International Business Machines CorporationMulti-fluid cooling of an electronic device
US795111421 Sep 200931 May 2011Abbott Diabetes Care Inc.Device and method employing shape memory alloy
US795960623 Sep 200914 Jun 2011Abbott Diabetes Care Inc.Device and method employing shape memory alloy
US7984751 *25 Mar 200926 Jul 2011National Taiwan UniversityDouble-acting device for generating synthetic jets
US799310813 Apr 20059 Aug 2011Abbott Diabetes Care Inc.Variable volume, shape memory actuated insulin dispensing pump
US799310929 Dec 20089 Aug 2011Abbott Diabetes Care Inc.Variable volume, shape memory actuated insulin dispensing pump
US802924529 Dec 20084 Oct 2011Abbott Diabetes Care Inc.Variable volume, shape memory actuated insulin dispensing pump
US802925029 Dec 20084 Oct 2011Abbott Diabetes Care Inc.Variable volume, shape memory actuated insulin dispensing pump
US802945921 Dec 20094 Oct 2011Abbott Diabetes Care Inc.Method and system for providing integrated medication infusion and analyte monitoring system
US802946021 Dec 20094 Oct 2011Abbott Diabetes Care Inc.Method and system for providing integrated medication infusion and analyte monitoring system
US804781129 Dec 20081 Nov 2011Abbott Diabetes Care Inc.Variable volume, shape memory actuated insulin dispensing pump
US804781229 Dec 20081 Nov 2011Abbott Diabetes Care Inc.Variable volume, shape memory actuated insulin dispensing pump
US806666521 Sep 200929 Nov 2011Abbott Diabetes Care Inc.Device and method employing shape memory alloy
US80755272 Nov 200913 Dec 2011Abbott Diabetes Care Inc.Device and method employing shape memory alloy
US807998323 Sep 200920 Dec 2011Abbott Diabetes Care Inc.Device and method employing shape memory alloy
US80799842 Nov 200920 Dec 2011Abbott Diabetes Care Inc.Device and method employing shape memory alloy
US80837181 Oct 200927 Dec 2011Abbott Diabetes Care Inc.Device and method employing shape memory alloy
US80893637 Feb 20113 Jan 2012Abbott Diabetes Care Inc.Method and system for providing data management in data monitoring system
US811213826 Sep 20087 Feb 2012Abbott Diabetes Care Inc.Method and apparatus for providing rechargeable power in data monitoring and management systems
US817280023 Sep 20098 May 2012Abbott Diabetes Care, Inc.Device and method employing shape memory alloy
US822638019 Dec 200824 Jul 2012Paritec GmbhChamber, pump having a chamber and method of manufacturing chambers
US8230906 *4 Aug 201031 Jul 2012International Business Machines CorporationDual-chamber fluid pump for a multi-fluid electronics cooling system and method
US834309224 Nov 20091 Jan 2013Abbott Diabetes Care Inc.Method and system for providing integrated medication infusion and analyte monitoring system
US834309328 May 20101 Jan 2013Abbott Diabetes Care Inc.Fluid delivery device with autocalibration
US834496631 Jan 20061 Jan 2013Abbott Diabetes Care Inc.Method and system for providing a fault tolerant display unit in an electronic device
US846797228 Apr 201018 Jun 2013Abbott Diabetes Care Inc.Closed loop blood glucose control algorithm analysis
US847171430 Dec 201125 Jun 2013Abbott Diabetes Care Inc.Method and system for providing data management in data monitoring system
US851224615 Mar 201020 Aug 2013Abbott Diabetes Care Inc.Method and apparatus for providing peak detection circuitry for data communication systems
US856008230 Jan 200915 Oct 2013Abbott Diabetes Care Inc.Computerized determination of insulin pump therapy parameters using real time and retrospective data processing
US857431015 Apr 20115 Nov 2013Python Medical, Inc.Stomach peristalsis device and method
US857985331 Oct 200612 Nov 2013Abbott Diabetes Care Inc.Infusion devices and methods
US863822023 May 201128 Jan 2014Abbott Diabetes Care Inc.Method and apparatus for providing data communication in data monitoring and management systems
US865397721 Jun 201318 Feb 2014Abbott Diabetes Care Inc.Method and system for providing data management in data monitoring system
US8690959 *10 Oct 20118 Apr 2014Python Medical, Inc.Implantable digestive tract organ
US87277451 Oct 200920 May 2014Abbott Diabetes Care, Inc.Device and method employing shape memory alloy
US879893423 Jul 20105 Aug 2014Abbott Diabetes Care Inc.Real time management of data relating to physiological control of glucose levels
US8807962 *18 Sep 200719 Aug 2014Sensirion AgMulticellular pump and fluid delivery device
US906410730 Sep 201323 Jun 2015Abbott Diabetes Care Inc.Infusion devices and methods
US9127665 *1 Mar 20138 Sep 2015Kci Licensing, Inc.Disc pump with advanced actuator
US919246124 Mar 201424 Nov 2015Python Medical, Inc.Implantable digestive tract organ
US92892811 Oct 201322 Mar 2016Python Medical, Inc.Stomach peristalsis device and method
US933294431 Jan 201410 May 2016Abbott Diabetes Care Inc.Method and system for providing data management in data monitoring system
US9482218 *3 Sep 20101 Nov 2016Quanta Fluid Solutions Ltd.Deformable membrane pump for dialysis machine
US957265120 Oct 201521 Feb 2017Python Medical, Inc.Implantable digestive tract organ
US96056652 Jul 201428 Mar 2017Sensirion Holding AgMulticellular pump and fluid delivery device
US975044012 Apr 20165 Sep 2017Abbott Diabetes Care Inc.Method and system for providing data management in data monitoring system
US20040000511 *1 Jul 20021 Jan 2004Koninlijke Philips Electronics N.V.Fluid-advancing fiber
US20050028901 *4 Aug 200310 Feb 2005Lockheed Martin CorporationMemory metal activation system
US20050139002 *21 Dec 200430 Jun 2005Alps Electric Co., Ltd.Pump actuated by diaphragm
US20060052659 *7 Sep 20049 Mar 2006Topaz Stephen RCardiac device and method
US20060159568 *28 Jun 200420 Jul 2006Koninklijke Philips Electronics N.V.Device for generating a medium stream
US20060233649 *15 Apr 200419 Oct 2006The Regents Of The University Of CaliforniaMicromembrane actuator
US20070065309 *28 Aug 200622 Mar 2007Alps Electric Co., Ltd.Diaphragm pump
US20070065310 *1 Sep 200622 Mar 2007Alps Electric Co., Ltd.Diaphragm pump
US20070164427 *30 Dec 200519 Jul 2007Ioan SauciucElectromagnetically-actuated micropump for liquid metal alloy enclosed in cavity with flexible sidewalls
US20070295480 *26 Jun 200627 Dec 2007International Business Machines CorporationMulti-fluid cooling system, cooled electronics module, and methods of fabrication thereof
US20070295481 *26 Jun 200627 Dec 2007International Business Machines CorporationDual-chamber fluid pump for a multi-fluid electronics cooling system and method
US20080101971 *18 Sep 20071 May 2008Sensirion AgMulticellular pump and fluid delivery device
US20090158923 *19 Dec 200825 Jun 2009Paritec GmbhChamber, pump having a chamber and method of manufacturing chambers
US20090178786 *25 Mar 200916 Jul 2009National Taiwan UniversityDouble-acting device for generating synthetic jets
US20090237884 *18 May 200924 Sep 2009Intel CorporationElectromagnetically-actuated micropump for liquid metal alloy
US20100008794 *18 Sep 200914 Jan 2010Abbott Diabetes Care, Inc.Device and Method Employing Shape Memory Alloy
US20100049130 *21 Sep 200925 Feb 2010Abbott Diabetes Care, Inc.Device and method employing shape memory alloy
US20100049131 *23 Sep 200925 Feb 2010Abbott Diabetes Care, Inc.Device and method employing shape memory alloy
US20100049132 *23 Sep 200925 Feb 2010Abbott Diabetes Care, Inc.Device and method employing shape memory alloy
US20100049133 *2 Oct 200925 Feb 2010Abbott Diabetes Care, Inc.Device and method employing shape memory alloy
US20100057007 *1 Oct 20094 Mar 2010Abbott Diabetes Care, Inc.Device and Method Employing Shape Memory Alloy
US20100057038 *1 Oct 20094 Mar 2010Abbott Diabetes Care, Inc.Device and Method Employing Shape Memory Alloy
US20100063446 *1 Oct 200911 Mar 2010Abbott Diabetes Care, Inc.Device and Method Employing Shape Memory Alloy
US20100063449 *23 Sep 200911 Mar 2010Abbott Diabetes Care, Inc.Device and method employing shape memory alloy
US20100068072 *1 Oct 200918 Mar 2010Abbott Diabetes Care, Inc.Device and Method Employing Shape Memory Alloy
US20100076371 *21 Sep 200925 Mar 2010Abbott Diabetes Care, Inc.Device and method employing shape memory alloy
US20100100041 *10 Nov 200922 Apr 2010Abbott Diabetes Care, Inc.Device and Method Employing Shape Memory Alloy
US20100100042 *10 Nov 200922 Apr 2010Abbott Diabetes Care, Inc.Device and Method Employing Shape Memory Alloy
US20100114028 *2 Nov 20096 May 2010Abbott Diabetes Care, Inc.Device and Method Employing Shape Memory Alloy
US20100114029 *2 Nov 20096 May 2010Abbott Diabetes Care, Inc.Device and Method Employing Shape Memory Alloy
US20100114073 *2 Nov 20096 May 2010Abbott Diabetes Care, Inc.Device and Method Employing Shape Memory Alloy
US20100241076 *21 Sep 200923 Sep 2010Abbott Diabetes Care, Inc.Device and Method Employing Shape Memory Alloy
US20100296248 *4 Aug 201025 Nov 2010International Business Machines CorporationDual-chamber fluid pump for a multi-fluid electronics cooling system and method
US20100306994 *4 Aug 20109 Dec 2010International Business Machines CorporationMulti-fluid cooling of an electronic device
US20110158822 *3 Apr 200730 Jun 2011Frank BartelsMethod and Device for Automatically Conveying Liquids of Gases
US20120116536 *10 Oct 201110 May 2012Imran Mir AImplantable digestive tract organ
US20120275943 *3 Sep 20101 Nov 2012James CoatesPump
US20130206794 *13 Feb 201315 Aug 2013Gojo Industries, Inc.Two fluid pump
US20130236338 *1 Mar 201312 Sep 2013Kci Licensing, Inc.Disc pump with advanced actuator
US20150192119 *9 Jun 20149 Jul 2015Samsung Electro-Mechanics Co., Ltd.Piezoelectric blower
EP0025005A1 *18 Aug 198011 Mar 1981Schaldach, Max, Prof. Dr. Ing.Device for delivering and dosing very small quantities of liquid
EP0105845A1 *19 Jan 198318 Apr 1984HAEMOTRONIC srl.Apparatus for pumping the blood in extracorporeal dialysis through an artificial kidney
EP0322899A2 *28 Dec 19885 Jul 1989Misuzuerie Co., Ltd.Piezo electric vibrator pump
EP0322899A3 *28 Dec 198818 Oct 1989Misuzuerie Co., Ltd.Piezo electric vibrator pump
EP0483469A1 *14 Aug 19916 May 1992Hewlett-Packard CompanyMicropump
EP1552146A2 *9 Oct 200313 Jul 2005Therasense, Inc.Fluid delivery device, system and method
EP1552146A4 *9 Oct 200323 Jul 2008Therasense IncFluid delivery device, system and method
EP1813803A1 *30 Jan 20061 Aug 2007MAGNETI MARELLI POWERTRAIN S.p.A.Fuel pump operated by means of a shape memory material
EP2072819A119 Dec 200824 Jun 2009PARItec GmbHPump chamber and method for manufacturing the chamber
WO1988005867A1 *3 Feb 198811 Aug 1988Applied Biotechnologies, Inc.Pumping apparatus with an electromagnetic assembly affixed to a flexible septum
WO1995020105A1 *29 Nov 199427 Jul 1995Kernforschungszentrum Karlsruhe GmbhMicro-diaphragm pump
WO1995022693A1 *17 Feb 199524 Aug 1995Microcool CorporationAir treating device having a bellows compressor
WO2004020022A2 *1 Aug 200311 Mar 2004Ou CuiValve pump
WO2004020022A3 *1 Aug 200310 Sep 2004Ou CuiValve pump
WO2004032994A29 Oct 200322 Apr 2004Therasense, Inc.Fluid delivery device, system and method
WO2004094821A2 *15 Apr 20044 Nov 2004The Regents Of The University Of CaliforniaMicromembrane shape memory alloy pump
WO2004094821A3 *15 Apr 200415 Dec 2005Univ CaliforniaMicromembrane shape memory alloy pump
WO2007115740A2 *3 Apr 200718 Oct 2007Bartels Mikrotechnik GmbhMethod and device for automatically conveying liquids or gases
WO2007115740A3 *3 Apr 200729 Nov 2007Bartels Mikrotechnik GmbhMethod and device for automatically conveying liquids or gases
Classifications
U.S. Classification417/413.1, 623/3.16, 92/103.00F, 92/103.00R
International ClassificationF04B43/02, A61M1/10, F04B43/00, F04B43/04
Cooperative ClassificationF04B43/023, A61M1/1053, F04B43/043, A61M2001/1056, F04B43/0054, A61M2001/1048
European ClassificationF04B43/02D, F04B43/04M, A61M1/10E4B, F04B43/00D8