FR2435242A1 - Spirometer with spring-balanced floating bell jar - has jar connected to one of two coaxial pulleys with other variable radiused pulley connected via spring to fixed point - Google Patents

Spirometer with spring-balanced floating bell jar - has jar connected to one of two coaxial pulleys with other variable radiused pulley connected via spring to fixed point

Info

Publication number
FR2435242A1
FR2435242A1 FR7825978A FR7825978A FR2435242A1 FR 2435242 A1 FR2435242 A1 FR 2435242A1 FR 7825978 A FR7825978 A FR 7825978A FR 7825978 A FR7825978 A FR 7825978A FR 2435242 A1 FR2435242 A1 FR 2435242A1
Authority
FR
France
Prior art keywords
jar
spring
spirometer
fixed point
pulleys
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.)
Granted
Application number
FR7825978A
Other languages
French (fr)
Other versions
FR2435242B1 (en
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.)
LEIM
Original Assignee
LEIM
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 LEIM filed Critical LEIM
Priority to FR7825978A priority Critical patent/FR2435242A1/en
Publication of FR2435242A1 publication Critical patent/FR2435242A1/en
Application granted granted Critical
Publication of FR2435242B1 publication Critical patent/FR2435242B1/fr
Granted legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/44—Constructional features of apparatus for radiation diagnosis
    • A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
    • A61B6/447—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit or the detector unit being mounted to counterpoise or springs
    • 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
    • A61B5/091—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
    • A61B5/095—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 within a rigid container, e.g. the boundary being formed by a liquid surface

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pulmonology (AREA)
  • Medical Informatics (AREA)
  • Engineering & Computer Science (AREA)
  • Biophysics (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Pathology (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Physiology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Level Indicators Using A Float (AREA)

Abstract

The spirometer comprises a bell jar which floats in a liquid filled container with a flexible tube passing up into it from its submerged mouth. Two pulleys are mounted on the same axis and the bell-jar is suspended from a vertical wire passing over one of them and fixed to it. The ends of another wire is attached to a fixed point via a spring after passing over the second pulley. One of the pulleys is in the form of a variable radius cam. When the patient blows into the tube, the apparent weight of the jar is equal and opposite to the force exerted by the spring.
FR7825978A 1978-09-05 1978-09-05 Spirometer with spring-balanced floating bell jar - has jar connected to one of two coaxial pulleys with other variable radiused pulley connected via spring to fixed point Granted FR2435242A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7825978A FR2435242A1 (en) 1978-09-05 1978-09-05 Spirometer with spring-balanced floating bell jar - has jar connected to one of two coaxial pulleys with other variable radiused pulley connected via spring to fixed point

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7825978A FR2435242A1 (en) 1978-09-05 1978-09-05 Spirometer with spring-balanced floating bell jar - has jar connected to one of two coaxial pulleys with other variable radiused pulley connected via spring to fixed point

Publications (2)

Publication Number Publication Date
FR2435242A1 true FR2435242A1 (en) 1980-04-04
FR2435242B1 FR2435242B1 (en) 1981-03-20

Family

ID=9212483

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7825978A Granted FR2435242A1 (en) 1978-09-05 1978-09-05 Spirometer with spring-balanced floating bell jar - has jar connected to one of two coaxial pulleys with other variable radiused pulley connected via spring to fixed point

Country Status (1)

Country Link
FR (1) FR2435242A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2457693A1 (en) * 1979-05-31 1980-12-26 Ici Australia Ltd TETRAMISOLE AND LEVAMISOLE AS ADJUVANT FOR CLOSTRIDIUM DISEASE VACCINE AND VACCINE CONTAINING SAME
EP0068929A2 (en) * 1981-06-10 1983-01-05 Thomson-Csf Device for balancing a vertically shiftable element, in particular a telescopic X-ray tube support
EP0168088A1 (en) * 1984-06-28 1986-01-15 Sensormedics B.V. Apparatus for measuring the volume of a measuring gas
EP1052472A2 (en) * 1999-05-11 2000-11-15 Mitutoyo Corporation Constant pressure mechanism of probe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU178027A1 (en) * вители Самосто тельное конструкторско технологическое бюро едицйнскй SPYROMETABOLOGRAPH
DE677725C (en) * 1938-07-31 1939-07-01 Siemens Reiniger Werke Akt Ges Winding device for chains on which forces attack, in particular for X-ray devices
CH250207A (en) * 1945-05-31 1947-08-15 Ag Elektroapparatebau Device for balancing the weight of the carriage of an X-ray machine.
DE850240C (en) * 1942-03-22 1952-09-22 Willy Sauter Device for measuring gas quantities, in particular spirometers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU178027A1 (en) * вители Самосто тельное конструкторско технологическое бюро едицйнскй SPYROMETABOLOGRAPH
DE677725C (en) * 1938-07-31 1939-07-01 Siemens Reiniger Werke Akt Ges Winding device for chains on which forces attack, in particular for X-ray devices
DE850240C (en) * 1942-03-22 1952-09-22 Willy Sauter Device for measuring gas quantities, in particular spirometers
CH250207A (en) * 1945-05-31 1947-08-15 Ag Elektroapparatebau Device for balancing the weight of the carriage of an X-ray machine.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NV2200/74 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2457693A1 (en) * 1979-05-31 1980-12-26 Ici Australia Ltd TETRAMISOLE AND LEVAMISOLE AS ADJUVANT FOR CLOSTRIDIUM DISEASE VACCINE AND VACCINE CONTAINING SAME
EP0068929A2 (en) * 1981-06-10 1983-01-05 Thomson-Csf Device for balancing a vertically shiftable element, in particular a telescopic X-ray tube support
EP0068929A3 (en) * 1981-06-10 1983-10-19 Thomson-Csf Device for balancing a vertically shiftable element, in particular a telescopic x-ray tube support
EP0168088A1 (en) * 1984-06-28 1986-01-15 Sensormedics B.V. Apparatus for measuring the volume of a measuring gas
US4638661A (en) * 1984-06-28 1987-01-27 Gould Electronics B.V. Apparatus for measuring the volume of a measuring gas
EP1052472A2 (en) * 1999-05-11 2000-11-15 Mitutoyo Corporation Constant pressure mechanism of probe
EP1052472A3 (en) * 1999-05-11 2002-01-02 Mitutoyo Corporation Constant pressure mechanism of probe
US6434851B1 (en) 1999-05-11 2002-08-20 Mitutoyo Corporation Constant pressure mechanism of probe

Also Published As

Publication number Publication date
FR2435242B1 (en) 1981-03-20

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Legal Events

Date Code Title Description
ST Notification of lapse