GB1301033A – Fluid flow regulating apparatus
– Google Patents
GB1301033A – Fluid flow regulating apparatus
– Google Patents
Fluid flow regulating apparatus
Info
Publication number
GB1301033A
GB1301033A
GB2233570A
GB2233570A
GB1301033A
GB 1301033 A
GB1301033 A
GB 1301033A
GB 2233570 A
GB2233570 A
GB 2233570A
GB 2233570 A
GB2233570 A
GB 2233570A
GB 1301033 A
GB1301033 A
GB 1301033A
Authority
GB
United Kingdom
Prior art keywords
circuit
error
pulses
produced
drops
Prior art date
1969-05-13
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.)
Expired
Application number
GB2233570A
Inventor
H J Hildebrandt
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.)
General Electric Co
Original Assignee
General Electric Co
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.)
1969-05-13
Filing date
1970-05-08
Publication date
1972-12-29
1970-05-08
Application filed by General Electric Co
filed
Critical
General Electric Co
1972-12-29
Publication of GB1301033A
publication
Critical
patent/GB1301033A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
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
A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
A61M5/16886—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body for measuring fluid flow rate, i.e. flowmeters
A61M5/1689—Drip counters
G—PHYSICS
G05—CONTROLLING; REGULATING
G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
G05D7/00—Control of flow
G05D7/06—Control of flow characterised by the use of electric means
G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
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
Y10S128/00—Surgery
Y10S128/13—Infusion monitoring
Abstract
1301033 Automatic flow control GENERAL ELECTRIC CO 8 May 1970 [13 May 1969] 22335/70 Heading G3R In a system for automatically controlling the rate of drip in a fluid drip chamber, photoelectric means produce control pulses corresponding to each drop and, after each pulse, the production of a succeeding pulse is prevented for a predetermined period to eliminate the effect of trailing secondary drops. In Fig.1, intravenous feeding fluid is supplied from a flask 11 to an injection needle 15 through a disposable kit including flexible tubing 13 and a drop chamber 17. A photo-cell 33 responds to light passing through the chamber from a source 35 so that pulses synchronized with the drops are produced by a transistor circuit 39 which is compensated for light intensity variations by a photo-cell 37 and includes feedback associated with a resistance-capacity network so that for a short period after each pulse the circuit is unresponsive e.g. to small trailing secondary drops. A desired rate of drip is set by adjusting a resistance-capacity charging circuit 45 which is periodically discharged by a slightly delayed circuit 47 controlled by pulses from a one-shot multi-vibrator 61 triggered by the drop pulses. Circuit 45 produces saw-tooth voltage of predetermined amplitude if the drops occur at the correct time instants. The amplitude of each saw-tooth is compared at 49 with a voltage corresponding to the predetermined amplitude so that a signal corresponding to the sense of any error is produced at 51 and a signal corresponding to the magnitude of the error produced at 53 to determine the length of pulses produced by multi-vibrator 61. The output of the latter is also applied through a gating circuit 59 to determine the period of operation of a switching transistor 27 or 29 as selected by a flip-flop circuit 57 according to the sense of error at 51. A split-field synchronous motor 25 is thus caused to run for a period corresponding to the magnitude of the error in the appropriate direction to correct the error by adjusting a cam 23 which squeezes tube 13 against the action of a spring 19. Error pulses of less than a predetermined duration are unable to produce operation of motor 25 so that the system has an inherent dead band. If the error becomes unduly large, e.g. following a change of drip rate setting, control initiating pulses additional to those produced by the drops are produced by a circuit 55. Should the drips become a steady stream, or light source fail, or the level of fluid in the bottom of the chamber as detected by a photo-cell 41 become too low, circuit 39 becomes oscillatory and a circuit 67, responsive to the higher frequency, operates switch 27 to cause motor 25 to reduce or stop the flow of fluid and give warning as necessary. Manual control of motor 25 to open the tube initially is provided. Suitable transistor circuits are described in detail.
GB2233570A
1969-05-13
1970-05-08
Fluid flow regulating apparatus
Expired
GB1301033A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US82416269A
1969-05-13
1969-05-13
Publications (1)
Publication Number
Publication Date
GB1301033A
true
GB1301033A
(en)
1972-12-29
Family
ID=25240757
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB2233570A
Expired
GB1301033A
(en)
1969-05-13
1970-05-08
Fluid flow regulating apparatus
Country Status (7)
Country
Link
US
(1)
US3609379A
(en)
JP
(1)
JPS51799B1
(en)
DE
(1)
DE2023027A1
(en)
FR
(1)
FR2042606B1
(en)
GB
(1)
GB1301033A
(en)
NL
(1)
NL7006908A
(en)
SE
(1)
SE376843B
(en)
Cited By (19)
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Assignee
Title
GB2118333A
(en)
*
1982-04-05
1983-10-26
Ipco Corp
Infusion monitors
US9151646B2
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2011-12-21
2015-10-06
Deka Products Limited Partnership
System, method, and apparatus for monitoring, regulating, or controlling fluid flow
USD745661S1
(en)
2013-11-06
2015-12-15
Deka Products Limited Partnership
Apparatus to control fluid flow through a tube
USD749206S1
(en)
2013-11-06
2016-02-09
Deka Products Limited Partnership
Apparatus to control fluid flow through a tube
USD751689S1
(en)
2013-11-06
2016-03-15
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Apparatus to control fluid flow through a tube
USD751690S1
(en)
2013-11-06
2016-03-15
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Apparatus to control fluid flow through a tube
USD752209S1
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2013-11-06
2016-03-22
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US9372486B2
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US9724467B2
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US9746093B2
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US9746094B2
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1975-02-04
Combustion Equip Ass
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1977-08-02
Burron Medical Products, Inc.
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1978-02-16
Fresenius Chem Pharm Ind
DEVICE FOR CONTROLLING AND MONITORING BLOOD FLOW DURING BLOOD DIALYSIS, PERFUSION AND DIAFILTRATION USING ONLY ONE CONNECTION POINT TO THE PATIENT’S BLOOD CIRCUIT (SINGLE NEEDLE TECHNOLOGY)
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1978-09-26
Gorelick Donald E
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1979-11-06
Alvin J. Marx
Automated intravenous fluid regulating and administering apparatus
US4111198A
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*
1977-06-02
1978-09-05
Alvin J. Marx
Automated intravenous fluid regulating and administering apparatus
DE2757897C3
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*
1977-12-24
1980-07-03
Jagenberg-Werke Ag, 4000 Duesseldorf
Device for the pulsed delivery of very small amounts of liquid, in particular H2 O2
US4319568A
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Vickers Limited
Liquid dispensing apparatus
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Beckman Instruments, Inc.
Method and apparatus ensuring full volume pickup in an automated pipette
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1980-09-08
1984-07-17
Imed Corporation
Drop controller
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1980-10-30
1982-05-11
Alvin J. Marx
Automated intravenous fluid regulating and administering apparatus
US4328800A
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*
1980-10-30
1982-05-11
Alvin J. Marx
Automated intravenous fluid regulating and administering apparatus
FR2495475A1
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*
1980-12-09
1982-06-11
Dubernard Hospital Sa
DETECTOR FOR CONTROLLING THE FLOW OF LIQUIDS ADMINISTERED BY ENTERAL OR PARENTERAL TRACK
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1982-08-06
1985-06-25
Nuvatec, Inc.
Intravenous set flow control device
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Nuvatec, Inc.
Intravenous set
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1986-01-10
1988-01-12
Abbott Laboratories
Apparatus and method for controlling the flow of fluid through an administration set
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1986-02-27
1987-05-12
Warner-Lambert Company
Empty container detector
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Academisch Ziekenhuis Vrije Un
METHOD FOR ACCURATE FLOW FLOW DETERMINATION OF LIQUIDS AND AN APPARATUS FOR CARRYING OUT THAT METHOD
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*
1991-11-04
1993-05-04
Nordson Corporation
Method and apparatus for optically monitoring and controlling a moving fiber of material
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*
1991-11-05
1995-04-21
Hospal Dasco Spa
FLOW DETECTOR.
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1991-11-05
1997-04-15
Hospal Ltd.
Flow detector
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Becton, Dickinson And Company
System and method for providing improved event reading and data processing capabilities in a flow cytometer
CA2706217C
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TWI420084B
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*
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The Boeing Company
Volume measuring station
DE102015116392A1
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*
2015-09-28
2017-03-30
Endress+Hauser Conducta Gmbh+Co. Kg
Device for dosing a liquid
TWI605845B
(en)
*
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2017-11-21
財團法人工業技術研究院
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Title
GB597639A
(en)
*
1944-08-23
1948-01-30
Walter Eric Bradley
Improvements relating to indicating or control devices for steam generators
US3163176A
(en)
*
1962-03-14
1964-12-29
Barth Engineering And Mfg Comp
Apparatus for sensing and controlling fluid flow in the form of discrete free-falling drops
FR1433037A
(en)
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1964-04-27
1966-03-25
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Apparatus for controlling the administration of liquids
JPS4938555A
(en)
*
1972-08-11
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1969
1969-05-13
US
US3609379D
patent/US3609379A/en
not_active
Expired – Lifetime
1970
1970-05-08
GB
GB2233570A
patent/GB1301033A/en
not_active
Expired
1970-05-12
SE
SE646770A
patent/SE376843B/xx
unknown
1970-05-12
DE
DE19702023027
patent/DE2023027A1/en
active
Pending
1970-05-13
NL
NL7006908A
patent/NL7006908A/xx
unknown
1970-05-13
FR
FR7017397A
patent/FR2042606B1/fr
not_active
Expired
1970-05-13
JP
JP45040473A
patent/JPS51799B1/ja
active
Pending
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* Cited by examiner, † Cited by third party
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Assignee
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GB2118333A
(en)
*
1982-04-05
1983-10-26
Ipco Corp
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Also Published As
Publication number
Publication date
DE2023027A1
(en)
1970-11-19
SE376843B
(en)
1975-06-16
FR2042606A1
(en)
1971-02-12
FR2042606B1
(en)
1973-07-13
NL7006908A
(en)
1970-11-17
US3609379A
(en)
1971-09-28
JPS51799B1
(en)
1976-01-10
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Legal Events
Date
Code
Title
Description
1973-05-09
PS
Patent sealed
1975-08-28
PS
Patent sealed
1983-12-21
PCNP
Patent ceased through non-payment of renewal fee
