GB1451360A - Device for measuring the tidal gas volume in a lung ventialtor - Google Patents
Device for measuring the tidal gas volume in a lung ventialtorInfo
- Publication number
- GB1451360A GB1451360A GB5672373A GB5672373A GB1451360A GB 1451360 A GB1451360 A GB 1451360A GB 5672373 A GB5672373 A GB 5672373A GB 5672373 A GB5672373 A GB 5672373A GB 1451360 A GB1451360 A GB 1451360A
- Authority
- GB
- United Kingdom
- Prior art keywords
- compartment
- measuring device
- gas flow
- gas volume
- 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
Links
- 210000004072 lung Anatomy 0.000 title abstract 3
- 239000012080 ambient air Substances 0.000 abstract 1
- 230000003190 augmentative effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000005192 partition Methods 0.000 abstract 1
- 210000002345 respiratory system Anatomy 0.000 abstract 1
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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F17/00—Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pulmonology (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- General Physics & Mathematics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Physiology (AREA)
- Medical Informatics (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
1451360 Measuring exhalation volume of the lungs JUNGNER INSTRUMENT AB 6 Dec 1973 [12 Dec 1972] 56723/73 Heading A5K A device used in conjunction with a lung ventilator to measure the gas volume exhaled by a patient comprises a rigid container 1 divided into first and second compartments 3, 2 by a partition 4, valves 5 and 8 connecting compartment 3 with the respiratory system of the patient and compartment 2 with atmosphere during exhalation, so that the gas volume exhaled by the patient flows into and inflates compartment 3. When exhalation ceases valves 5 and 8 are returned, in response to the control unit of the ventilator, to their opposing positions wherein compartment 3 is connected to atmosphere, and a device 9 is actuated to inject a constant gas flow into compartment 2, a time measuring device 11 being started. Compartment 3 is thus emptied, under the effect of the constant gas flow into compartment 2, through valve 5 to atmosphere. When compartment 3 is completely empty the gas pressure in compartment 2 rises steeply due to gas flow from device 9, this pressure rise being sensed by a pressure transducer 10 in communication with compartment 2 to produce an electrical output signal stopping the time measuring device 11 and returning valve 8 to its other position wherein gas flow from device 9 into compartment 2 is interrupted and compartment 2 is connected to atmosphere. The time interval measured by time measuring device 11 will be directly proportional to the gas volume expelled from compartment 3 and thus to the gas volume exhaled by the patient, and a direct measure of this gas volume is given by multiplying together the time measured by time measuring device 11 and the rate of constant gas flow from device 9. In a second embodiment (Figure 2 - not shown) a smaller constant gas flow is augmented by ambient air drawn in through an ejector (19) to reduce gas consumption of the measuring device. In this embodiment the time interval measured by the time measuring device (22) is directly proportional to the gas volume exhaled by the patient.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7216188A SE380724B (en) | 1972-12-12 | 1972-12-12 | DEVICE AT A LUNG FAN FOR SATURATION OF THE GAS VOLUME EXHAUSTED BY THE PATIENT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1451360A true GB1451360A (en) | 1976-09-29 |
Family
ID=20301850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5672373A Expired GB1451360A (en) | 1972-12-12 | 1973-12-06 | Device for measuring the tidal gas volume in a lung ventialtor |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3875626A (en) |
| DE (1) | DE2361165A1 (en) |
| FR (1) | FR2209926B1 (en) |
| GB (1) | GB1451360A (en) |
| IT (1) | IT1004043B (en) |
| SE (1) | SE380724B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2437195A1 (en) * | 1978-09-29 | 1980-04-25 | Jones Medical Equip | DEVICE AND METHOD FOR CALIBRATING A PULMONARY FUNCTION MONITORING APPARATUS |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4112931A (en) * | 1977-01-05 | 1978-09-12 | Cavitron Corporation | Tidal volume display |
| US4233990A (en) * | 1979-03-20 | 1980-11-18 | Empire Plastics Manufacturing Inc. | Volume and flow-rate dependent inspirator |
| US4406291A (en) * | 1980-04-07 | 1983-09-27 | Schwesinger Dennis W | Exhalation monitoring apparatus |
| US4359057A (en) * | 1980-09-30 | 1982-11-16 | Giovanni Manzella | Apparatus for measuring oxygen consumption and the exchange of other breathing gases |
| US4364413A (en) * | 1981-01-07 | 1982-12-21 | The Perkin-Elmer Corporation | Molar gas-flow controller |
| DE3903370A1 (en) * | 1989-02-04 | 1990-08-09 | Ganshorn Med Electronic Gmbh | EXPIRED AIR RECEIVING TUBE |
| US5115682A (en) * | 1990-05-21 | 1992-05-26 | Feiler Ernest M | Coronary artery graft flow-meter |
| EP3064242A1 (en) | 2003-04-28 | 2016-09-07 | Advanced Circulatory Systems Inc. | Ventilator and methods for treating head trauma and low blood circulation |
| US20080047555A1 (en) * | 2003-09-11 | 2008-02-28 | Advanced Circulatory Systems, Inc. | Bag-valve resuscitation for treating of hypotension, head trauma, and cardiac arrest |
| US8011367B2 (en) * | 2003-09-11 | 2011-09-06 | Advanced Circulatory Systems, Inc. | CPR devices and methods utilizing a continuous supply of respiratory gases |
| US9352111B2 (en) | 2007-04-19 | 2016-05-31 | Advanced Circulatory Systems, Inc. | Systems and methods to increase survival with favorable neurological function after cardiac arrest |
| US8151790B2 (en) | 2007-04-19 | 2012-04-10 | Advanced Circulatory Systems, Inc. | Volume exchanger valve system and method to increase circulation during CPR |
| US9724266B2 (en) | 2010-02-12 | 2017-08-08 | Zoll Medical Corporation | Enhanced guided active compression decompression cardiopulmonary resuscitation systems and methods |
| US12016820B2 (en) | 2010-02-12 | 2024-06-25 | Zoll Medical Corporation | Enhanced guided active compression decompression cardiopulmonary resuscitation systems and methods |
| EP3560537B1 (en) | 2011-12-19 | 2021-03-24 | Zoll Medical Corporation | Systems for therapeutic intrathoracic pressure regulation |
| US9811634B2 (en) | 2013-04-25 | 2017-11-07 | Zoll Medical Corporation | Systems and methods to predict the chances of neurologically intact survival while performing CPR |
| US20140358047A1 (en) | 2013-05-30 | 2014-12-04 | ResQSystems, Inc. | End-tidal carbon dioxide and amplitude spectral area as non-invasive markers of coronary perfusion pressure and arterial pressure |
| US10265495B2 (en) | 2013-11-22 | 2019-04-23 | Zoll Medical Corporation | Pressure actuated valve systems and methods |
| US11247015B2 (en) | 2015-03-24 | 2022-02-15 | Ventec Life Systems, Inc. | Ventilator with integrated oxygen production |
| US10315002B2 (en) | 2015-03-24 | 2019-06-11 | Ventec Life Systems, Inc. | Ventilator with integrated oxygen production |
| FR3037648B1 (en) * | 2015-06-16 | 2017-07-07 | Commissariat Energie Atomique | DEVICE FOR MEASURING GAS EMONATION VOLUMES |
| US10773049B2 (en) | 2016-06-21 | 2020-09-15 | Ventec Life Systems, Inc. | Cough-assist systems with humidifier bypass |
| CA3100163A1 (en) | 2018-05-13 | 2019-11-21 | Samir Saleh AHMAD | Portable medical ventilator system using portable oxygen concentrators |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3059469A (en) * | 1961-06-12 | 1962-10-23 | Jersey Prod Res Co | Determination of cavity size in earth formations penetrated by a borehole |
| US3467078A (en) * | 1965-05-10 | 1969-09-16 | Bird F M | Spirometer |
| US3499438A (en) * | 1966-05-19 | 1970-03-10 | Blease Anaesthetic Equip Ltd | Respiratory metering device |
| US3659590A (en) * | 1969-10-13 | 1972-05-02 | Jones Medical Instr Co | Respiration testing system |
| US3690143A (en) * | 1970-11-27 | 1972-09-12 | American Optical Corp | Self calibrating tidal volume impedance pneumograph |
| US3718044A (en) * | 1971-12-07 | 1973-02-27 | Us Army | Flow meter for indirectly measuring the flow of blood from a blood pump |
-
1972
- 1972-12-12 SE SE7216188A patent/SE380724B/en unknown
-
1973
- 1973-12-06 GB GB5672373A patent/GB1451360A/en not_active Expired
- 1973-12-07 DE DE2361165A patent/DE2361165A1/en active Pending
- 1973-12-07 IT IT7354192A patent/IT1004043B/en active
- 1973-12-11 US US423789A patent/US3875626A/en not_active Expired - Lifetime
- 1973-12-12 FR FR7344395A patent/FR2209926B1/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2437195A1 (en) * | 1978-09-29 | 1980-04-25 | Jones Medical Equip | DEVICE AND METHOD FOR CALIBRATING A PULMONARY FUNCTION MONITORING APPARATUS |
Also Published As
| Publication number | Publication date |
|---|---|
| US3875626A (en) | 1975-04-08 |
| FR2209926B1 (en) | 1978-02-10 |
| DE2361165A1 (en) | 1974-06-20 |
| IT1004043B (en) | 1976-07-10 |
| SE380724B (en) | 1975-11-17 |
| FR2209926A1 (en) | 1974-07-05 |
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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 |