CA2033181A1 - Two valve micropump with improved outlet - Google Patents

Two valve micropump with improved outlet

Info

Publication number
CA2033181A1
CA2033181A1 CA2033181A CA2033181A CA2033181A1 CA 2033181 A1 CA2033181 A1 CA 2033181A1 CA 2033181 A CA2033181 A CA 2033181A CA 2033181 A CA2033181 A CA 2033181A CA 2033181 A1 CA2033181 A1 CA 2033181A1
Authority
CA
Canada
Prior art keywords
valve
check
outlet
pumping chamber
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2033181A
Other languages
French (fr)
Other versions
CA2033181C (en
Inventor
Harald T. G. Van Lintel
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.)
Debiotech SA
Original Assignee
Harald T. G. Van Lintel
Westonbridge International Limited
Debiotech S.A.
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 claimed from CH2241/89A external-priority patent/CH680009A5/en
Priority claimed from FR8910699A external-priority patent/FR2650634B1/en
Application filed by Harald T. G. Van Lintel, Westonbridge International Limited, Debiotech S.A. filed Critical Harald T. G. Van Lintel
Publication of CA2033181A1 publication Critical patent/CA2033181A1/en
Application granted granted Critical
Publication of CA2033181C publication Critical patent/CA2033181C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/109—Valves; Arrangement of valves inlet and outlet valve forming one unit
    • F04B53/1092—Valves; Arrangement of valves inlet and outlet valve forming one unit and one single element forming both the inlet and outlet closure member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0081—Special features systems, control, safety measures
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • A61M2205/0244—Micromachined materials, e.g. made from silicon wafers, microelectromechanical systems [MEMS] or comprising nanotechnology
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • A61M2205/0272—Electro-active or magneto-active materials
    • A61M2205/0294—Piezoelectric materials
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/14212—Pumping with an aspiration and an expulsion action
    • A61M5/14224—Diaphragm type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2400/00—Moving or stopping fluids
    • B01L2400/04—Moving fluids with specific forces or mechanical means
    • B01L2400/0475—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure
    • B01L2400/0481—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure squeezing of channels or chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/11—Kind or type liquid, i.e. incompressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/60—Fluid transfer
    • 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
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

Abstract

Pumping takes place within the micropump as a result of the deformation of a plate (12) using a piezoelectric pad (13). The deformation produces a variation in volume within a pumping chamber (15) defined inside a plate (11) which is made of a material which can be machined using photolithographic processes. The pump outlet (3) is blocked off, selectively, by a membraned check-valve (18) which is in direct communication with another check-valve (16) via the pumping chamber. The check-valve (16) selectively enables the pumping chamber to communicate with the pump inlet (2). The outlet valve membrane (18) has a layer of oxide (17) providing a pretension on closing. The check-valve thus has a regulatory effect on the pump operation, making the flow almost independent of the outlet (3) pressure.
CA 2033181 1989-06-14 1990-06-12 Two valve micropump with improved outlet Expired - Lifetime CA2033181C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
CH02241/89-1 1989-06-14
CH2241/89A CH680009A5 (en) 1989-06-14 1989-06-14 Micro-pump-for injection of medication dose
FR89/10699 1989-08-07
FR8910699A FR2650634B1 (en) 1989-08-07 1989-08-07 IMPROVED MICROPUMP
PCT/CH1990/000145 WO1990015929A1 (en) 1989-06-14 1990-06-12 Improved micro-pump

Publications (2)

Publication Number Publication Date
CA2033181A1 true CA2033181A1 (en) 1990-12-15
CA2033181C CA2033181C (en) 2000-10-24

Family

ID=25689880

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2033181 Expired - Lifetime CA2033181C (en) 1989-06-14 1990-06-12 Two valve micropump with improved outlet

Country Status (11)

Country Link
US (1) US5224843A (en)
EP (1) EP0429591B1 (en)
JP (1) JPH04501449A (en)
KR (1) KR920701670A (en)
AT (1) ATE110142T1 (en)
AU (1) AU633104B2 (en)
CA (1) CA2033181C (en)
DE (1) DE69011631T2 (en)
ES (1) ES2061042T3 (en)
NO (1) NO173755C (en)
WO (1) WO1990015929A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110439803A (en) * 2019-08-28 2019-11-12 杨民寿 A kind of water pump

Families Citing this family (274)

* Cited by examiner, † Cited by third party
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CA2033181C (en) 2000-10-24
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NO173755B (en) 1993-10-18
AU5720790A (en) 1991-01-08
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WO1990015929A1 (en) 1990-12-27
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ATE110142T1 (en) 1994-09-15
DE69011631D1 (en) 1994-09-22
NO910192D0 (en) 1991-01-17
JPH04501449A (en) 1992-03-12
US5224843A (en) 1993-07-06

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