GB1379857A - Apparatus for use in determining respiratory airway resistance - Google Patents

Apparatus for use in determining respiratory airway resistance

Info

Publication number
GB1379857A
GB1379857A GB843672A GB843672A GB1379857A GB 1379857 A GB1379857 A GB 1379857A GB 843672 A GB843672 A GB 843672A GB 843672 A GB843672 A GB 843672A GB 1379857 A GB1379857 A GB 1379857A
Authority
GB
United Kingdom
Prior art keywords
pressure
measuring
bell
airway
patient
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
GB843672A
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.)
Sayer W J
Original Assignee
Sayer W J
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 Sayer W J filed Critical Sayer W J
Publication of GB1379857A publication Critical patent/GB1379857A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/091—Measuring volume of inspired or expired gases, e.g. to determine lung capacity
    • A61B5/093—Measuring volume of inspired or expired gases, e.g. to determine lung capacity the gases being exhaled into, or inhaled from, an expansible chamber, e.g. bellows or expansible bag
    • A61B5/0935—Recording apparatus specially adapted therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/085—Measuring impedance of respiratory organs or lung elasticity

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pulmonology (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Physiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

1379857 Measuring respiratory airway resistance W J SAYER 23 Feb 1972 [24 Feb 1971] 8436/72 Heading A5K Apparatus for use in measuring the nasal or tracheobronchial airway resistance of a person comprises means for measuring a patient's pharyngeal pressure, means for recording the flow of air in one direction through the patient's airway, and means responsive to the pressure-measuring means to operate the flow recorder only when the pharyngeal pressure is within a predetermined pressure range. The pressure is measured by a mouthpiece 46 connected to a pressure gauge 50 having a switch which closes when the pressure is within adjustable limits to energise a motor driving a drum 26 carrying a chart on which a pen 24 records the volume of an adjustable bell 8 of a spirometer 2, into or from which the patient supplies or receives air. The airway resistance R is calculated from the relation R=(P 0 -P D )/ CV/t), where P 0 is the atmospheric pressure, P p is the pharyngeal pressure, and (V/t) is the air-flow rate. In inspiratory nasal airway measurement, the patient breaths in air from the bell 8 through the nostrils and exhales through the mouth around the mouthpiece 46, and, in expiratory nasal airway measurement, he breathes in through the mouth and out through the nostrils into the bell 8. When measuring tracheobronchial airway resistance, the nostrils are blocked off and a modified mouthpiece (68), Fig. 7 (not shown), is used which is connected through a main opening to the bell 8 and through a side opening to the gauge/switch 50. Two such gauge/switches may be used, one for inspiration and one for expiration, so that the switching limits do not have to be adjusted when changing from inspiration to expiration measurements.
GB843672A 1971-02-24 1972-02-23 Apparatus for use in determining respiratory airway resistance Expired GB1379857A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11828071A 1971-02-24 1971-02-24

Publications (1)

Publication Number Publication Date
GB1379857A true GB1379857A (en) 1975-01-08

Family

ID=22377612

Family Applications (1)

Application Number Title Priority Date Filing Date
GB843672A Expired GB1379857A (en) 1971-02-24 1972-02-23 Apparatus for use in determining respiratory airway resistance

Country Status (7)

Country Link
US (1) US3742939A (en)
JP (1) JPS5638219B1 (en)
CA (1) CA949771A (en)
DE (1) DE2208524A1 (en)
FR (1) FR2127745A5 (en)
GB (1) GB1379857A (en)
NL (1) NL7202428A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD246599S (en) * 1975-07-28 1977-12-06 Puritan-Bennett Corporation Pulmonary diagnostic instrument unit
JPS59107399A (en) * 1982-12-13 1984-06-21 リオン株式会社 Measurement of nasalization level
US6379316B1 (en) 1999-08-31 2002-04-30 Advanced Respiratory, Inc. Method and apparatus for inducing sputum samples for diagnostic evaluation
US6415791B1 (en) 1999-10-04 2002-07-09 American Biosystems, Inc. Airway treatment apparatus with cough inducement
US20050166928A1 (en) * 2004-01-30 2005-08-04 Yandong Jiang Methods and devices for maintaining an open airway
US8091554B2 (en) * 2004-01-30 2012-01-10 The General Hospital Corporation Methods and devices for relieving upper airway obstructions
US7621267B1 (en) * 2004-08-30 2009-11-24 Adams Phillip M Scuba mask purging apparatus and method
US7785280B2 (en) * 2005-10-14 2010-08-31 Hill-Rom Services, Inc. Variable stroke air pulse generator
US7422015B2 (en) * 2005-11-22 2008-09-09 The General Electric Company Arrangement and method for detecting spontaneous respiratory effort of a patient
US8460223B2 (en) 2006-03-15 2013-06-11 Hill-Rom Services Pte. Ltd. High frequency chest wall oscillation system
US9795752B2 (en) 2012-12-03 2017-10-24 Mhs Care-Innovation, Llc Combination respiratory therapy device, system, and method
US9792831B2 (en) * 2015-08-04 2017-10-17 Benjamin Grabber Incentive spirometer and musical instrument

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3036569A (en) * 1959-08-04 1962-05-29 John A Clements Lung-airway resistance meter
CH474262A (en) * 1966-05-10 1969-06-30 S M E Societa Apparecchiature Writing breath measuring device
US3410264A (en) * 1966-06-02 1968-11-12 Frederik Willem Steven Instrument for measuring total respiratory and nasal air resistance
FR1508303A (en) * 1966-11-23 1968-01-05 Measuring device for studying pulmonary ventilatory mechanics
DE1915959B2 (en) * 1969-03-28 1975-03-06 Siemens Ag, 1000 Berlin Und 8000 Muenchen Analyser for exhaled breath - has suction aspirator tube leading from breathing tube for sampling and opened during exhalation
US3621833A (en) * 1969-06-26 1971-11-23 Robert Crane Method and apparatus for automatically determining physiological parameters related to human breathing airway resistance and functional residual capacity

Also Published As

Publication number Publication date
DE2208524A1 (en) 1972-09-28
CA949771A (en) 1974-06-25
NL7202428A (en) 1972-08-28
US3742939A (en) 1973-07-03
JPS5638219B1 (en) 1981-09-04
FR2127745A5 (en) 1972-10-13

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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