WO1992016247A3 - Flow-control valve system - Google Patents

Flow-control valve system Download PDF

Info

Publication number
WO1992016247A3
WO1992016247A3 PCT/US1992/002294 US9202294W WO9216247A3 WO 1992016247 A3 WO1992016247 A3 WO 1992016247A3 US 9202294 W US9202294 W US 9202294W WO 9216247 A3 WO9216247 A3 WO 9216247A3
Authority
WO
WIPO (PCT)
Prior art keywords
groove
flow
membrane
stem
enlarged portion
Prior art date
Application number
PCT/US1992/002294
Other languages
French (fr)
Other versions
WO1992016247A2 (en
Inventor
Dean L Kamen
Valentine L Faust
Original Assignee
Deka Products Lp
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 Deka Products Lp filed Critical Deka Products Lp
Publication of WO1992016247A2 publication Critical patent/WO1992016247A2/en
Publication of WO1992016247A3 publication Critical patent/WO1992016247A3/en

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
    • F04B43/02—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
    • 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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/004—Actuating devices; Operating means; Releasing devices actuated by piezoelectric means
    • F16K31/005—Piezo-electric benders
    • 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
    • A61M2205/12—General characteristics of the apparatus with interchangeable cassettes forming partially or totally the fluid circuit
    • A61M2205/128—General characteristics of the apparatus with interchangeable cassettes forming partially or totally the fluid circuit with incorporated valves
    • 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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/26—Valves closing automatically on disconnecting the line and opening on reconnection thereof

Abstract

A valve for controlling intravenous fluid includes a flexible membrane (11), which together with a rigid body (21) forms a valving chamber (29). Two mouths (27, 32) lead into and out of the valving chamber. In one embodiment, a stem (23) having an enlarged portion (15) is attached to the membrane's inner face and extends into the outlet mouth. Fluid pressure on the inner face causes the enlarged portion of the stem to press against a narrower portion (38) of the outlet conduit, thereby preventing flow through the oulet conduit. External pressure on the membrane's outer face causes the enlarged portion of the stem to separate from the outlet conduit's walls, thereby permitting flow through the outlet conduit. In another embodiment, a groove (43) is placed near one of the mouths. The membrane may be pressed against the rigid body and the groove, so as to prevent flow except through the groove and to variably restrict flow through the groove.
PCT/US1992/002294 1991-03-22 1992-03-20 Flow-control valve system WO1992016247A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US67481391A 1991-03-22 1991-03-22
US674,813 1991-03-22

Publications (2)

Publication Number Publication Date
WO1992016247A2 WO1992016247A2 (en) 1992-10-01
WO1992016247A3 true WO1992016247A3 (en) 1993-04-29

Family

ID=24707986

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1992/002294 WO1992016247A2 (en) 1991-03-22 1992-03-20 Flow-control valve system

Country Status (2)

Country Link
AU (1) AU1793592A (en)
WO (1) WO1992016247A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19944343A1 (en) * 1999-09-16 2001-04-12 Fresenius Ag Valve
DE102004016443B3 (en) * 2004-04-03 2005-08-18 Codman Neuro Sciences Sàrl Valve for infusion pumps comprises a valve body formed by a cylindrical tappet which slides in a cylindrical receiver, and an inflow opening into the receiver in a region of the tappet base
US8141844B2 (en) 2005-10-26 2012-03-27 Codman NeuroSciences Sàrl Flow rate accuracy of a fluidic delivery system
US8240635B2 (en) 2005-10-26 2012-08-14 Codman Neuro Sciences Sárl Flow rate accuracy of a fluidic delivery system
JP5528404B2 (en) * 2011-09-06 2014-06-25 株式会社村田製作所 Fluid control device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH170539A (en) * 1933-11-28 1934-07-15 John Blondel Henri Device for temporarily varying the back pressure ensuring the closure of a membrane valve.
DE1802413A1 (en) * 1967-10-13 1969-06-19 Robertshaw Controls Co Flow control device
US3719343A (en) * 1971-04-08 1973-03-06 Ladish Co Fluid pressure actuated diaphragm valve
GB1429932A (en) * 1972-05-19 1976-03-31 Evered Co Ltd Gas flow regulating devices
US4685654A (en) * 1987-01-08 1987-08-11 Hu Liang Tung Flow regulator for drip infusion
US4796660A (en) * 1986-03-05 1989-01-10 Manisa Establishment Drip emitter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH170539A (en) * 1933-11-28 1934-07-15 John Blondel Henri Device for temporarily varying the back pressure ensuring the closure of a membrane valve.
DE1802413A1 (en) * 1967-10-13 1969-06-19 Robertshaw Controls Co Flow control device
US3719343A (en) * 1971-04-08 1973-03-06 Ladish Co Fluid pressure actuated diaphragm valve
GB1429932A (en) * 1972-05-19 1976-03-31 Evered Co Ltd Gas flow regulating devices
US4796660A (en) * 1986-03-05 1989-01-10 Manisa Establishment Drip emitter
US4685654A (en) * 1987-01-08 1987-08-11 Hu Liang Tung Flow regulator for drip infusion

Also Published As

Publication number Publication date
AU1793592A (en) 1992-10-21
WO1992016247A2 (en) 1992-10-01

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