GB1293633A - Ventilator testing device - Google Patents

Ventilator testing device

Info

Publication number
GB1293633A
GB1293633A GB01159/70A GB1115970A GB1293633A GB 1293633 A GB1293633 A GB 1293633A GB 01159/70 A GB01159/70 A GB 01159/70A GB 1115970 A GB1115970 A GB 1115970A GB 1293633 A GB1293633 A GB 1293633A
Authority
GB
United Kingdom
Prior art keywords
bellows
attached
carries
supports
pointer
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
GB01159/70A
Inventor
Roger Edward Wentworth Manley
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.)
MEDICAL DEVELOPMENTS Ltd
Original Assignee
MEDICAL DEVELOPMENTS Ltd
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 MEDICAL DEVELOPMENTS Ltd filed Critical MEDICAL DEVELOPMENTS Ltd
Priority to GB01159/70A priority Critical patent/GB1293633A/en
Publication of GB1293633A publication Critical patent/GB1293633A/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
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

1293633 Ventilator testing devices MEDICAL DEVELOPMENTS Ltd 9 March 1970 11159/70 Heading A5T A device for testing the performance of ventilating machines comprises a bellows 36, the volume of which is urged to a datum level by the restoring force of one or more springs 50, 52, 54, which acts when the bellows is expanded or contracted, gas from a ventilating machine entering the bellows through an entry conduit (60). The device has a pyrimidalshaped frame formed of four supports (12), 14, 16 and 18. The end walls of the bellows are rigid, one being attached to supports (12) and 16 and the other 38 being attached to a pivotable arm 40 which carries an extension 44. The free end of the extension 44 carries a pin 46 to which one end of each spring 50, 52, 54 may be attached as required, the other end of each spring is attached to a bar 32 connecting supports 14 and 18. The springs are such that, when the volume of the bellows is at the datum level, they lie in the same plane as supports 14 and 18. The bellows has restraining rings one of which is attached by a link 51 to the apex of the frame. The arm 40 also carries a pointer (42) which moves across an indicator plate (28) to show the amount of bellows expansion or contraction. The entry conduit (60) carries an adjustable flow-restriction device (62) and the gas pressure in conduit (60) is registered on a gauge (30) mounted above the indicator plate the device can be modified to record continuously the movement of the pointer.
GB01159/70A 1970-03-09 1970-03-09 Ventilator testing device Expired GB1293633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB01159/70A GB1293633A (en) 1970-03-09 1970-03-09 Ventilator testing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB01159/70A GB1293633A (en) 1970-03-09 1970-03-09 Ventilator testing device

Publications (1)

Publication Number Publication Date
GB1293633A true GB1293633A (en) 1972-10-18

Family

ID=9981109

Family Applications (1)

Application Number Title Priority Date Filing Date
GB01159/70A Expired GB1293633A (en) 1970-03-09 1970-03-09 Ventilator testing device

Country Status (1)

Country Link
GB (1) GB1293633A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29317E (en) * 1973-01-29 1977-07-26 Michigan Instruments, Inc. Pneumatic lung analog
US4430893A (en) * 1981-11-16 1984-02-14 Michigan Instruments, Inc. Pneumatic lung analog for simulation of spontaneous breathing and for testing of ventilatory devices used with spontaneously breathing patients
WO1988008526A1 (en) * 1987-04-30 1988-11-03 Biosystems Inc. Testing device for respiratory protective devices
WO2009088304A1 (en) * 2008-01-11 2009-07-16 Laerdal Medical As A device for simulating variable lung compliance

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29317E (en) * 1973-01-29 1977-07-26 Michigan Instruments, Inc. Pneumatic lung analog
US4430893A (en) * 1981-11-16 1984-02-14 Michigan Instruments, Inc. Pneumatic lung analog for simulation of spontaneous breathing and for testing of ventilatory devices used with spontaneously breathing patients
WO1988008526A1 (en) * 1987-04-30 1988-11-03 Biosystems Inc. Testing device for respiratory protective devices
US4796467A (en) * 1987-04-30 1989-01-10 Biosystems Inc. Testing device for respiratory protective devices
GB2211425A (en) * 1987-04-30 1989-07-05 Biosystems Inc Testing device for respiratory protective devices
GB2211425B (en) * 1987-04-30 1991-06-12 Biosystems Inc Testing device for respiratory protective devices
WO2009088304A1 (en) * 2008-01-11 2009-07-16 Laerdal Medical As A device for simulating variable lung compliance
US8764451B2 (en) 2008-01-11 2014-07-01 Laerdal Medical As Device for simulating variable lung compliance

Similar Documents

Publication Publication Date Title
US2203460A (en) Apparatus for measuring fluid pressure
GB1293633A (en) Ventilator testing device
CH610399A5 (en) Apparatus indicating displacements in three directions, comprising a comparator
US2111315A (en) Force measuring device for rockets
GB1202309A (en) Weighing device
US2639616A (en) Compensated pressure gauge
GB985047A (en) Apparatus for the measurement of variations in the pressure in a fluid
US2369650A (en) Pressure gauge
US2350261A (en) Measuring and indicating system
ES393057A1 (en) Apparatus for assessing the damping performance of vehicle suspension systems
US1857139A (en) Pressure gauge indicator
US2279105A (en) Temperature compensating means for instruments
GB1149706A (en) Improvements in differential pressure responsive devices
US3440885A (en) Static pressure alignment means for differential pressure measuring instrument
GB1283009A (en) Spring type mechanical shock and sway arrestor
GB765539A (en) Pressure sensitive apparatus
Goitein A Dimensional Analysis Approach to Bourdon Tube Design
GB987807A (en) Improvements in or relating to pressure measuring apparatus
US2874572A (en) Rotatable pressure gauges
US1620482A (en) Pressure gauge
US1393155A (en) Pressure-gage
SU149923A1 (en) Pressure sensor with stiffness compensator
GB1046889A (en) Improvements in or relating to oscillometers
US1517985A (en) Pressure gauge
GB901534A (en) A differential pressure-responsive device for pneumatic controllers

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee