SE8404170L - SENSOR FOR VOLUME Saturation of Respiratory Gas - Google Patents

SENSOR FOR VOLUME Saturation of Respiratory Gas

Info

Publication number
SE8404170L
SE8404170L SE8404170A SE8404170A SE8404170L SE 8404170 L SE8404170 L SE 8404170L SE 8404170 A SE8404170 A SE 8404170A SE 8404170 A SE8404170 A SE 8404170A SE 8404170 L SE8404170 L SE 8404170L
Authority
SE
Sweden
Prior art keywords
sensor
flow
volumetric
measuring
flow rates
Prior art date
Application number
SE8404170A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE8404170D0 (en
Inventor
M Abendroth
S Seifert
J Schmidt
R Muller
Original Assignee
Medizin Labortechnik Veb K
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 Medizin Labortechnik Veb K filed Critical Medizin Labortechnik Veb K
Publication of SE8404170D0 publication Critical patent/SE8404170D0/en
Publication of SE8404170L publication Critical patent/SE8404170L/en

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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
    • 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
    • G01F1/20—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 detection of dynamic effects of the flow
    • G01F1/32—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 detection of dynamic effects of the flow using swirl flowmeters
    • G01F1/325—Means for detecting quantities used as proxy variables for swirl
    • G01F1/3282—Means for detecting quantities used as proxy variables for swirl for detecting variations in infrasonic, sonic or ultrasonic waves, due to modulation by passing through the swirling fluid
    • 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
    • A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
    • A61M2016/0039—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the inspiratory circuit

Landscapes

  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Pulmonology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Emergency Medicine (AREA)
  • Hematology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measuring Volume Flow (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

The invention serves to provide a sensor for measuring the volumetric flow, which can preferably be employed for monitoring automatic, controlled respiration but which is also suitable for recording other, small volumetric flows of gaseous media. In the case of low flow rates the known sensors which operate on the principle of the Karman vortex street are characterised by periodic fluctuations, an inadequate signal-to-noise ratio and an equally unsatisfactory linear relationship between vortex frequency and volumetric flow. It is the aim and object of the invention to eliminate these unfavourable properties, so that there is provided a sensor having a high measuring accuracy for a wide range of flow rates, including the weak movements of gas. This is achieved with a sensor whose measuring section is provided on the inlet side with a parabolic or hyperbolic narrowing which brings about improved formation of vortices of one of its downstream flow bodies having a prismatic cross-section.
SE8404170A 1983-11-24 1984-08-22 SENSOR FOR VOLUME Saturation of Respiratory Gas SE8404170L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD83257059A DD219381A1 (en) 1983-11-24 1983-11-24 SENSOR FOR THE VOLUME FLOW MEASUREMENT OF A BREATHING GAS

Publications (2)

Publication Number Publication Date
SE8404170D0 SE8404170D0 (en) 1984-08-22
SE8404170L true SE8404170L (en) 1985-05-25

Family

ID=5552211

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8404170A SE8404170L (en) 1983-11-24 1984-08-22 SENSOR FOR VOLUME Saturation of Respiratory Gas

Country Status (4)

Country Link
DD (1) DD219381A1 (en)
DE (1) DE3430577A1 (en)
HU (1) HU189949B (en)
SE (1) SE8404170L (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4815324A (en) * 1986-04-24 1989-03-28 Mitsubishi Denki Kabushiki Kaisha Intake air meter for an internal combustion engine
DE4038871A1 (en) * 1990-12-03 1992-06-04 Peter Dr Sc Techn Schaller Respirator control using sensor to measure breath vol. or flow - and supplying signal processor also receiving resistance, inverse compliance and any leakage vol. values as well as threshold values to control breathing pressure
DE4413525C2 (en) * 1994-04-15 1996-09-26 Inst Bioprozess Analysenmesst Dust sampling device
DE19617432A1 (en) * 1996-05-01 1997-11-06 Schaller Peter Dr Ing Habil Arrangement for measuring respiratory air flow
DE102015214141A1 (en) * 2015-07-27 2017-02-02 Daniel Peller Respiratory therapy device

Also Published As

Publication number Publication date
HUT35508A (en) 1985-07-29
DE3430577A1 (en) 1985-06-05
DD219381A1 (en) 1985-03-06
HU189949B (en) 1986-08-28
SE8404170D0 (en) 1984-08-22

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