GB1489440A - Liquid flow-rate measuring device - Google Patents

Liquid flow-rate measuring device

Info

Publication number
GB1489440A
GB1489440A GB4385/75A GB438575A GB1489440A GB 1489440 A GB1489440 A GB 1489440A GB 4385/75 A GB4385/75 A GB 4385/75A GB 438575 A GB438575 A GB 438575A GB 1489440 A GB1489440 A GB 1489440A
Authority
GB
United Kingdom
Prior art keywords
chamber
liquid
measuring device
liquid flow
chambers
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.)
Expired
Application number
GB4385/75A
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.)
Sandoz AG
Original Assignee
Sandoz AG
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 Sandoz AG filed Critical Sandoz AG
Publication of GB1489440A publication Critical patent/GB1489440A/en
Expired legal-status Critical Current

Links

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
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621—Extra-corporeal blood circuits
    • A61M1/3663—Flow rate transducers; Flow integrators
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/52—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring the height of the fluid level due to the lifting power of the fluid flow

Landscapes

  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Anesthesiology (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Cardiology (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • External Artificial Organs (AREA)

Abstract

1489440 Measuring fluid-flow SANDOZ Ltd 31 Jan 1975 [4 Feb 1974] 4385/75 Heading G1R A device for measuring the flow-rate of a liquid, particularly blood in an extracorporeal handling system comprises a graduated chamber 12 receiving the liquid e.g. from a pump 42 and dialyzer 44, the chamber 12 being surrounded by a further chamber 24 into which the chamber 12 discharges via a thin edged aperture 18. Pressures between the chambers are equalized by holes 30. The liquid may discharge through a filter 34 and control valve 38. Conduits 39, 40 are normally capped but may be opened for sampling or addition of substances e.g. saline. The chambers may be of transparent plastics and the device may be disposable.
GB4385/75A 1974-02-04 1975-01-31 Liquid flow-rate measuring device Expired GB1489440A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT40007/74A IT1005475B (en) 1974-02-04 1974-02-04 APPARATUS FOR THE MEASUREMENT OF THE BLOOD FLOW IN THE HEMO DIALYSIS

Publications (1)

Publication Number Publication Date
GB1489440A true GB1489440A (en) 1977-10-19

Family

ID=11246407

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4385/75A Expired GB1489440A (en) 1974-02-04 1975-01-31 Liquid flow-rate measuring device

Country Status (7)

Country Link
JP (1) JPS5812532B2 (en)
CA (1) CA1049811A (en)
CH (1) CH588687A5 (en)
DE (1) DE2504402C2 (en)
FR (1) FR2260084B1 (en)
GB (1) GB1489440A (en)
IT (1) IT1005475B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4136693A (en) * 1977-05-10 1979-01-30 Johnson & Johnson Constant flow I.V. device
US4661246A (en) * 1984-10-01 1987-04-28 Ash Medical Systems, Inc. Dialysis instrument with dialysate side pump for moving body fluids
FR2579319A1 (en) * 1985-03-25 1986-09-26 Lagrandiere Marc De Method and device for static measurement of a liquid flow rate or of a pressure

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2767581A (en) * 1952-09-17 1956-10-23 Forrest G Moorehead Flow meter

Also Published As

Publication number Publication date
FR2260084B1 (en) 1978-04-21
DE2504402C2 (en) 1985-06-20
DE2504402A1 (en) 1975-08-07
CH588687A5 (en) 1977-06-15
CA1049811A (en) 1979-03-06
JPS50115554A (en) 1975-09-10
JPS5812532B2 (en) 1983-03-09
IT1005475B (en) 1976-08-20
FR2260084A1 (en) 1975-08-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee