US3756577A - Vaporizer ventilating line - Google Patents

Vaporizer ventilating line Download PDF

Info

Publication number
US3756577A
US3756577A US3756577DA US3756577A US 3756577 A US3756577 A US 3756577A US 3756577D A US3756577D A US 3756577DA US 3756577 A US3756577 A US 3756577A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
vaporizer
anesthesia
valve
portion
line
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 - Lifetime
Application number
Inventor
H Breiling
Original Assignee
H Breiling
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
Grant date

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10Preparation of respiratory gases or vapours
    • A61M16/14Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/18Vaporising devices for anaesthetic preparations
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00Gas and liquid contact apparatus
    • Y10S261/65Vaporizers

Abstract

In an anesthesia vaporizer, the ventilating line has its outlet orifice positioned lower than the vaporizer control valve and the branch point between the air inlet into the vaporizer and the bypass line to the mixing chamber. This prevents unduly enriched gas from reaching a patient during the beginning use of the vaporizer. Preferably the inlet to the ventilating line is within the container and below the control valve.

Description

United States Patent 1 1 1111 3,756,577 Breiling Sept. 4, 1973 VAPORIZER VENTILATING LINE 3,420,232 1/1969 Bickford 128/188 2 0 O k 7 .2 [76] Inventor: Hans Georg Breiling, Friedrichstr. 3 534 73 1 H97 BIC ford M25 9 34b, Lubeck, Germany FOREIGN PATENTS OR APPLICATIONS 22 Filed: Apr. 17 1972 709,638 5/1965 Canada 682,519 11/1952 Great Britain [21] Appl. No.: 244,972 696,769 9/1953 Great Britain 814,427 6/ 1959 Great Britain Related 1,043,110 9 1966 Great Britain [63] Continuation of Ser. No. 69,928, Sept. 4, 1970, 1,104,585 2/1968 Great Britain 128/188 abandoned.

. Primary Examiner-Tim R. Miles [52] US. Cl 261/63, 261/D1G. 65, 128/188 Atmmey JOhn McGlew et aL 1511 Int. Cl B011 3/04 [58] Field of Search 261/62, 63, DIG. 65;

137/625.29; 128/188 ABSTRACT In an anesthesia vaporizer, the ventilating line has its 1 References Clted outlet orifice positioned lower than the vaporizer con- UNITED STATES PATENTS trol valve and the branch .point between the air inlet 1,860,136 10 1932 Bunch 222/396 into the vaporizer and the y-P to the mixing 1,899,749 2 1933 Deutsch.. 239 143 chamber- This p v s u du y n ich d gas fr m 2,388,850 11/1945 Kantor 261/D1G. 7 reaching a patient during the beginning use of the va- 2,615,700 10/1952 Dixon 251/102 porizer. Preferably the inlet to the ventilating line is 2,915,061 12/1959 Edmondso" et 128/188 within the container and below the control valve. 3,158,154 1l/1964 Schreiber 128/188 3,164,149 1/1965 White et al. 137/4844 3 Claims, 1 Drawing Figure PAIENIEUSEP 4 I915 3J56577 INVE Hans Georg Breilz' VAPORIZER VENTILATING LINE This is a continuation of application Ser. No. 69,928 filed Sept. 4, 1970, now abandoned.

Vaporizers are used which contain anesthesia which is liquid at normal temperatures. These Vaporizers have a ventilating or air escape line which is closed when the vaporizer is being used and is opened when the apparatus is not being used. Because the ventilating line is opened during non-use, the pressures are equalized which otherwise could be changed due to temperature variations. In the existing Vaporizers, the close-off valve for the ventilating line is positioned above the vaporizer control valve. This facilitates the construction and operation of the vaporizer. However, it has been observed that when the vaporizer is placed in a ready condition, it is possible that the gas flowing through the vaporizing chamber and other parts of the apparatus can be enriched up to the point of saturation so that the air or nutritional gases breathed by the patient are saturated with anesthesia vapors corresponding to the prevailing temperature. This produces the danger that, when anesthesia is begun to be administered to a patient, too much anesthesia containing vapor is given the patient.

The object of this invention is to avoid such disadvantages and to produce an anesthesia vaporizer in which in ready condition cannot produce a too high concentration of anesthesia in the gas administered the patient. This invention starts with an anesthesia vaporizer having a ventilating line closable by a valve. According to this invention, the outlet orifice of the ventilating line is positioned lower than the vaporizer control valve and below the point at which the air inlet line into the vaporizer branches from the by-pass line leading to the mixing chamber. This has the advantage in that, when the vaporizer is not being used, that is shut down, the anesthesia can only be concentrated to saturation in the vaporizer chamber and such concentration cannot occur in the other lines conducting gas. This is because the anesthesia vapor is heavier than air or the gas being used for breathing by the'patient, and that it is therefor discharged into the outside air.

The means by which the objects of the invention are obtained are described more fully with reference to the accompanying schematic drawing showing a crosssectional view through the vaporizer.

The intake air going through the inlet opening 1 of the vaporizer flows through branch 2 into the vaporizer 3 by going through pipe 4. The vaporizer container holds a liquid anesthesia 5 which is drawn up by a cylindrical wick 6. The air going through pipe 4 enters a spiral channel 7 and becomes saturated by flowing passed wick 6 with the saturation corresponding to the temperature and pressure.

A vessel 8 containing water is mounted within the vaporizer for maintaining the temperature at a constant value.

The gas enriched with anesthesia flows passed the vaporizer metering control valve 10 which can be manually adjusted and enters mixing chamber 11. A portion of the inlet air entering opening 1 flows through a bypass line containing a throttle 12. This throttle can be composed of a plurality of tubes. The nutrient gas mixed with the anesthesia in chamber 11 leaves the vaporizer through the outlet opening 13.

The ventilating line 14 of this invention is mounted in the interior of the vaporizer container and has a shutoff valve 15 which is closed when the vaporizer is being used and otherwise opened. In this invention, the outlet orifice 15 of line 14 lies at a lower level than the valve 10 and also lower-than the branch 2 for pipe 4.

Preferably the inlet opening 17 for the line 14 is positioned adjacent the valve 10. This prevents gas which could enter the vaporizer through valve 10, which is almost impossible to close tightly, cannotunnecessarily enrich itself with the anesthesia and discharges the same into the outside air as a total loss.

Having now described the means by which the objects of the invention are obtained,

WHAT IS CLAIMED IS:

1. A vaporizer for liquid anesthesia comprising a container having a top portion with a mixing chamber and a bottom portion in communication with said top portion adapted to contain the liquid anesthesia up to a predetermined level and leaving a space thereabove in said bottom portion for vaporization of said liquid anesthesia, an inlet connected into said mixing chamber, a discharge for the mixing chamber spaced from said inlet, a bypass for said inlet connected from said inlet into said bottom portion for flow over the liquid anesthesia, a valve seat defined at the connection of said top and bottom portions, a valve in said mixing chamber movable toward and away from said valve seat for opening and closing the connection between said top and bottom portion, and a ventilating duct having one end connecting with atmosphere and an opposite end terminating in a vent opening which is closely spaced below said valve and which vents said bottom portion substantially to the level of said valve.

2. A vaporizer, according to claim 1, wherein said bypass includes means defining an annular flow passage above the liquid anesthesia level, and a wick disposed in the open bottom portion extending below the liquid anesthesia level and upwardly through said annular flow path.

3. A vaporizer according to claim 1, including a temperature regulating water vessel located within said bottom portion above the liquid level and having an inner wall defining a central upward flow passage directly below said valve, said ventilating duct extending through said flow passage and terminating in an upwardly extending portion immediately below said valve.

Claims (3)

1. A vaporizer for liquid anesthesia comprising a container having a top portion with a mixing chamber and a bottom portion in communication with said top portion adapted to contain the liquid anesthesia up to a predetermined level and leaving a space thereabove in said bottom portion for vaporization of said liquid anesthesia, an inlet connected into said mixing chamber, a discharge for the mixing chamber spaced from said inlet, a bypass for said inlet connected from said inlet into said bottom portion for flow over the liquid anesthesia, a valve seat defined at the connection of said top and bottom portions, a valve in said mixing chamber movable toward and away from said valve seat for opening and closing the connection between said top and bottom portion, and a ventilating duct having one end connecting with atmosphere and an opposite end terminating in a vent opening which is closely spaced below said valve and which vents said bottom portion substantially to the level of said valve.
2. A vaporizer, according to claim 1, wherein said bypass includes means defining an annular flow passage above the liquid anesthesia level, and a wick disposed in the open bottom portion extending below the liquid anesthesia level and upwardly through said annular flow path.
3. A vaporizer according to claim 1, including a temperature regulating water vessel located within said bottom portion above the liquid level and having an inner wall defining a central upward flow passage directly below said valve, said ventilating duct extending through said flow passage and terminating in an upwardly extending portion immediately below said valve.
US3756577A 1966-12-17 1972-04-17 Vaporizer ventilating line Expired - Lifetime US3756577A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DED0051803 1966-12-17
US24497272 true 1972-04-17 1972-04-17

Publications (1)

Publication Number Publication Date
US3756577A true US3756577A (en) 1973-09-04

Family

ID=25972546

Family Applications (1)

Application Number Title Priority Date Filing Date
US3756577A Expired - Lifetime US3756577A (en) 1966-12-17 1972-04-17 Vaporizer ventilating line

Country Status (3)

Country Link
US (1) US3756577A (en)
GB (1) GB1156073A (en)
NL (1) NL6714668A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4014382A (en) * 1975-05-21 1977-03-29 Basil E. Demeur Temperature and/or relative humidity control system
FR2374943A1 (en) * 1976-12-22 1978-07-21 Soxil Spa Multi ingredient anaesthetic mixing vessel - has bottom paddle wheel for liquid connected by tube to rotary mixer head at top
US4105725A (en) * 1972-11-21 1978-08-08 Liquid Carbonic Canada Ltd. Saturated liquid/vapor generating and dispensing
US4448593A (en) * 1982-06-14 1984-05-15 Spiers Walter A Water air filter
US4632789A (en) * 1985-01-31 1986-12-30 Reid Philip L Gas humidification apparatus
US4759882A (en) * 1985-01-31 1988-07-26 Mocon Modern Controls, Inc. Gas humidification process
US6244576B1 (en) * 1999-11-09 2001-06-12 Kuo Lung Tsai Mist Humidifier
WO2003097224A1 (en) * 2002-05-17 2003-11-27 Salter Labs Bubble humidifier with improved diffuser and pressure relief device
US20080066749A1 (en) * 2006-09-20 2008-03-20 Drager Medical Ag & Co. Kg Anesthetic vaporizer
US20080141793A1 (en) * 2006-12-15 2008-06-19 Mayer Daniel W System and method for generating a gas sample of known and adjustable relative humidity
CN102551185A (en) * 2012-01-12 2012-07-11 山东盛欣电热器材有限公司 Constant-temperature atomization moisture regain machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1584130A (en) * 1968-08-09 1969-12-12
DE4105148A1 (en) * 1991-02-20 1992-08-27 Draegerwerk Ag Narkosemitteldosiervorrichtung

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1860136A (en) * 1928-04-02 1932-05-24 John C Bowman Liquid spreading apparatus
US1899749A (en) * 1929-02-25 1933-02-28 Electric Sprayit Company Spraying device
US2388850A (en) * 1941-05-07 1945-11-13 Liquid Carbonic Corp Carbonator
US2615700A (en) * 1946-02-28 1952-10-28 Ici Ltd Apparatus for contacting liquids with gases or vapors
GB682519A (en) * 1949-11-16 1952-11-12 Robert Reynolds Macintosh Improvements in anaesthetic or analgesic inhalers
GB696769A (en) * 1950-10-05 1953-09-09 British Oxygen Co Ltd Improvements in or relating to apparatus for the administration of inhalant gas mixtures
GB814427A (en) * 1956-12-24 1959-06-03 Cyprane Ltd Improvements in volatile anaesthetic vaporising apparatus
US2915061A (en) * 1956-12-24 1959-12-01 Cyprane Ltd Volatile anaesthetic vaporising apparatus
US3158154A (en) * 1961-11-18 1964-11-24 Drager Otto H Anesthesia vaporizer
US3164149A (en) * 1960-02-03 1965-01-05 British Oxygen Co Ltd Apparatus for controlling or assisting respiration
CA709638A (en) * 1960-07-22 1965-05-18 Otto H. Drager Narcosis apparatus
GB1043110A (en) * 1964-09-15 1966-09-21 Robert Reynolds Macintosh Improvements in or relating to anaesthetic administering apparatus
GB1104585A (en) * 1965-12-29 1968-02-28 Blease Anaesthetic Equip Ltd Improved vaporiser
US3420232A (en) * 1965-07-20 1969-01-07 Foregger Co Inc Anesthetic vaporizer
US3534732A (en) * 1966-11-07 1970-10-20 Foregger Co Inc Anesthetic vaporizer

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1860136A (en) * 1928-04-02 1932-05-24 John C Bowman Liquid spreading apparatus
US1899749A (en) * 1929-02-25 1933-02-28 Electric Sprayit Company Spraying device
US2388850A (en) * 1941-05-07 1945-11-13 Liquid Carbonic Corp Carbonator
US2615700A (en) * 1946-02-28 1952-10-28 Ici Ltd Apparatus for contacting liquids with gases or vapors
GB682519A (en) * 1949-11-16 1952-11-12 Robert Reynolds Macintosh Improvements in anaesthetic or analgesic inhalers
GB696769A (en) * 1950-10-05 1953-09-09 British Oxygen Co Ltd Improvements in or relating to apparatus for the administration of inhalant gas mixtures
GB814427A (en) * 1956-12-24 1959-06-03 Cyprane Ltd Improvements in volatile anaesthetic vaporising apparatus
US2915061A (en) * 1956-12-24 1959-12-01 Cyprane Ltd Volatile anaesthetic vaporising apparatus
US3164149A (en) * 1960-02-03 1965-01-05 British Oxygen Co Ltd Apparatus for controlling or assisting respiration
CA709638A (en) * 1960-07-22 1965-05-18 Otto H. Drager Narcosis apparatus
US3158154A (en) * 1961-11-18 1964-11-24 Drager Otto H Anesthesia vaporizer
GB1043110A (en) * 1964-09-15 1966-09-21 Robert Reynolds Macintosh Improvements in or relating to anaesthetic administering apparatus
US3420232A (en) * 1965-07-20 1969-01-07 Foregger Co Inc Anesthetic vaporizer
GB1104585A (en) * 1965-12-29 1968-02-28 Blease Anaesthetic Equip Ltd Improved vaporiser
US3534732A (en) * 1966-11-07 1970-10-20 Foregger Co Inc Anesthetic vaporizer

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4105725A (en) * 1972-11-21 1978-08-08 Liquid Carbonic Canada Ltd. Saturated liquid/vapor generating and dispensing
US4014382A (en) * 1975-05-21 1977-03-29 Basil E. Demeur Temperature and/or relative humidity control system
FR2374943A1 (en) * 1976-12-22 1978-07-21 Soxil Spa Multi ingredient anaesthetic mixing vessel - has bottom paddle wheel for liquid connected by tube to rotary mixer head at top
US4448593A (en) * 1982-06-14 1984-05-15 Spiers Walter A Water air filter
US4632789A (en) * 1985-01-31 1986-12-30 Reid Philip L Gas humidification apparatus
US4759882A (en) * 1985-01-31 1988-07-26 Mocon Modern Controls, Inc. Gas humidification process
US6244576B1 (en) * 1999-11-09 2001-06-12 Kuo Lung Tsai Mist Humidifier
WO2003097224A1 (en) * 2002-05-17 2003-11-27 Salter Labs Bubble humidifier with improved diffuser and pressure relief device
US6786475B2 (en) * 2002-05-17 2004-09-07 Salter Labs Bubble humidifier with improved diffuser and pressure relief device
US20080066749A1 (en) * 2006-09-20 2008-03-20 Drager Medical Ag & Co. Kg Anesthetic vaporizer
US7992843B2 (en) * 2006-09-20 2011-08-09 Dräger Medical GmbH Anesthetic vaporizer
US20080141793A1 (en) * 2006-12-15 2008-06-19 Mayer Daniel W System and method for generating a gas sample of known and adjustable relative humidity
US20090173172A1 (en) * 2006-12-15 2009-07-09 Mocon, Inc. System and method for generating a gas sample of known and adjustable relative humidity
US7578208B2 (en) 2006-12-15 2009-08-25 Mocon, Inc. System and method for generating a gas sample of known and adjustable relative humidity
US7908936B2 (en) 2006-12-15 2011-03-22 Mocon, Inc. System and method for generating a gas sample of known and adjustable relative humidity
CN102551185A (en) * 2012-01-12 2012-07-11 山东盛欣电热器材有限公司 Constant-temperature atomization moisture regain machine
CN102551185B (en) 2012-01-12 2014-07-16 贵州省烟草科学研究所 Constant-temperature atomization moisture regain machine

Also Published As

Publication number Publication date Type
NL6714668A (en) 1968-06-18 application
GB1156073A (en) 1969-06-25 application

Similar Documents

Publication Publication Date Title
US3534732A (en) Anesthetic vaporizer
US5916493A (en) Humidifier system
US3687137A (en) Small animal anesthesia machine
US4701198A (en) Fuel tank for use in a motor vehicle
US5329939A (en) Humidifier with liquid level control
US5109838A (en) Visually monitored anesthesia breathing circuit
US3788039A (en) Fuel tank inerting system with means to improve thermal stability of fuel
US4886055A (en) Nebulizer device
US4250911A (en) Chemical feeder with disposable chemical container
US3140590A (en) Air conditioner for a face mask
US5241954A (en) Nebulizer
US1971853A (en) Apparatus for conveying powdered material
US2316814A (en) Feeder
US3990441A (en) Nebulizer heater
US3982095A (en) Respiratory humidifier
US3593710A (en) Anesthetic apparatus
US5301662A (en) Nebulizer with high oxygen content and high total flow rate
US20040216737A1 (en) System for anesthetizing laboratory animals
US3972202A (en) Closed loop cryogenic delivery
US2269500A (en) Respiratory apparatus
US3021840A (en) Portable anesthesia apparatus
US1488125A (en) Sprayer
US4333450A (en) Nebulizer-manifold
US2206688A (en) Vaporizer
US3106345A (en) Shower bath water control with additive attachment