DE1149860B - Vaporizer for anesthesia machines with anesthetics that are liquid at normal temperature - Google Patents
Vaporizer for anesthesia machines with anesthetics that are liquid at normal temperatureInfo
- Publication number
- DE1149860B DE1149860B DED37494A DED0037494A DE1149860B DE 1149860 B DE1149860 B DE 1149860B DE D37494 A DED37494 A DE D37494A DE D0037494 A DED0037494 A DE D0037494A DE 1149860 B DE1149860 B DE 1149860B
- Authority
- DE
- Germany
- Prior art keywords
- evaporator
- anesthetics
- liquid
- normal temperature
- vaporizer
- 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.)
- Pending
Links
- 239000003193 general anesthetic agent Substances 0.000 title claims description 8
- 206010002091 Anaesthesia Diseases 0.000 title claims description 6
- 230000037005 anaesthesia Effects 0.000 title claims description 6
- 229940035674 anesthetics Drugs 0.000 title claims description 5
- 239000007788 liquid Substances 0.000 title claims description 5
- 239000006200 vaporizer Substances 0.000 title claims description 4
- 239000007789 gas Substances 0.000 description 12
- 239000000203 mixture Substances 0.000 description 4
- 230000003444 anaesthetic effect Effects 0.000 description 3
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- 239000003994 anesthetic gas Substances 0.000 description 2
- LVZWSLJZHVFIQJ-UHFFFAOYSA-N Cyclopropane Chemical compound C1CC1 LVZWSLJZHVFIQJ-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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. ventilators; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
- A61M16/18—Vaporising devices for anaesthetic preparations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/10—Mixing gases with gases
- B01F23/12—Mixing gases with gases with vaporisation of a liquid
Landscapes
- Health & Medical Sciences (AREA)
- Anesthesiology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
Es sind Narkosegeräte bekannt, die mit einem Verdampfer für das bei normaler Temperatur flüssige Narkosemittel ausgerüstet sind. Dabei wird ein Teil des Gases durch den Verdampfer geführt, während ein anderer Teil des Gases im sogenannten By-Pass am Verdampfer vorbeigeführt und mit dem durch den Verdampfer geführten Gas wieder vereinigt wird. Zur Regelung des Verhältnisses der Gasmengen, die einerseits durch den Verdampfer und die andererseits durch den By-Pass strömen, dienen in diese Leitungen eingeschaltete, festeingestellte bzw. verstellbare Drosseln. Eine Ausführungsform dieser Geräte besteht darin, daß die By-Pass-Leitung mit einer konstanten Drossel versehen ist, während andererseits in die Abgangsleitung des Verdampfers ein Regelventil eingeschaltet ist. Diese Geräte haben den Nachteil, daß bei ihrer Verwendung im Zusammenhang mit Geräten zur künstlichen Beatmung Druckschwankungen im Verdampfer auftreten, die zu einer Pendelbewegung des Gases sowohl in dem durch den Verdämpfer gehenden Gasweg als auch in dem durch den By-Pass gehenden Gasweg führen. Diese Pendelbewegungen können unter anderem dazu führen, daß verdampftes Narkosemittel über die Gaszugangsleitung zum Verdampfer in die By-Pass-Leitung gelangt. Dadurch wird die Einstellung des Gehaltes des Narkosegasgemisches am Narkosemittel unkontrollierbar verändert.There are known anesthesia machines with a vaporizer for the liquid at normal temperature Anesthetics are equipped. Part of the gas is passed through the evaporator while another part of the gas is passed in the so-called by-pass at the evaporator and with the the gas passed through the vaporizer is recombined. To regulate the ratio of the amounts of gas that on the one hand through the evaporator and on the other hand through the by-pass, are used in these lines switched on, fixed or adjustable throttles. One embodiment of these devices exists in that the by-pass line is provided with a constant throttle, while on the other hand in the outlet line of the evaporator a control valve is switched on. These devices have the disadvantage that when they are used in connection with devices for artificial respiration, pressure fluctuations occur in the evaporator, causing a pendulum motion of the gas both in the one passing through the evaporator leading gas path as well as in the gas path going through the by-pass. These pendulum movements can lead, among other things, to evaporated anesthetic agent via the gas access line reaches the evaporator in the by-pass line. This will adjust the salary of the The anesthetic gas mixture on the anesthetic agent changed in an uncontrollable manner.
Die Erfindung vermeidet die Nachteile der bekannten Geräte. Die Erfindung betrifft einen Verdampfer für Narkosegeräte mit bei normaler Temperatur flüssigen Narkosemitteln. Die Erfindung besteht darin, daß in die Zuleitung zum Verdampfer hinter der Abzweigung zum By-Pass ein derart langes Rohrstück eingeschaltet ist, daß das infolge der Druckschwankungen im Verdampferraum aus diesem in die Zuleitung zurücktretende Gas nicht bis zum By-Pass-Ventil gelangen kann. Die erfindungsgemäße Ausbildung hat den Vorteil, daß infolge der im Verdampfer auftretenden Druckschwankungen eine Veränderung des Gehaltes des Narkosegases an dem Narkosemittel nicht eintritt.The invention avoids the disadvantages of the known devices. The invention relates to an evaporator for anesthesia machines with anesthetics that are liquid at normal temperature. The invention consists in that in the supply line to the evaporator behind the junction to the by-pass such a long piece of pipe is switched on, that the result of the pressure fluctuations in the evaporator chamber from this into the supply line returning gas cannot reach the by-pass valve. The training according to the invention has the advantage that there is a change as a result of the pressure fluctuations occurring in the evaporator the content of the anesthetic gas in the anesthetic does not occur.
Weitere Einzelheiten der Erfindung seien an Hand des in der Zeichnung schematisch im Schnitt dargestellten Ausführungsbeispieles erläutert.Further details of the invention are shown schematically in section with reference to the drawing Embodiment explained.
Durch die Leitung 1 strömt das Gas, wie Luft, Luftgemische oder Nährgasgemische mit oder ohne Zusätze von Zyklopropan, Lachgas od. dgl, der Verteilerkammer 2 zu. Diese ist einmal über die Zuleitung 3 mit dem Verdampfer 4 verbunden, dessen Abgangsleitung 5 zu dem Ventil 6 führt. Von da aus führt die Leitung 7 zur Mischkammer 8. Dem VerVerdampfer für NarkosegeräteThe gas, such as air, air mixtures or nutrient gas mixtures, with or without flows through the line 1 Additions of cyclopropane, nitrous oxide or the like to the distribution chamber 2. This is once over the supply line 3 is connected to the evaporator 4, the outlet line 5 of which leads to the valve 6. From there The line 7 leads to the mixing chamber 8. The evaporator for anesthesia machines
mit bei normaler Temperatur flüssigenwith liquid at normal temperature
NarkosemittelnAnesthetics
Anmelder:Applicant:
Drägerwerk, Heinr. & Bernh. Dräger,
Lübeck, Moislinger Allee 53/55Drägerwerk, Heinr. & Bernh. Dräger,
Lübeck, Moislinger Allee 53/55
dämpfer 4 parallel geschaltet ist der sogenannte By-Pass 9, in dem ein Widerstand in Form eines regelbaren Ventils 10, einer Drossel od. dgl. eingeschaltet ist. Beide Widerstände bzw. Ventile 6 und 10 oder Drosseln sind verstellbar. Von der Mischkammer 8 führt die Leitung 11 zum Patienten.Damper 4 connected in parallel is what is known as the by-pass 9, in which a resistor in the form of a controllable valve 10, a throttle or the like. Switched on is. Both resistors or valves 6 and 10 or throttles are adjustable. From the mixing chamber 8 leads the line 11 to the patient.
In der Zuleitung 3 ist ein verhältnismäßig langes Rohrstück 12 eingeschaltet, dessen Länge nach folgenden Überlegungen bestimmt wird. Bei Anwendung des Gerätes treten im Verdampferraum 13 des Verdampfers 4 in gleicher Weise Druckschwankungen auf, wie sie in der Mischkammer 8 und der Leitung 11 sich durch die Beatmung des Patienten ergeben. Die Druckschwankungen im Verdampferraum 13 pflanzen sich über die Zuleitung 3 und den By-Pass 9 bis in die Verteilerkammer 2 fort, was bei den bekannten Geräten dazu führen könnte, daß verdampftes Narkosemittel bei Druckentlastung über die Verteilerkammer 2 und den By-Pass 9 in nicht kontrollierbarer Menge auch über den By-Pass in das dem Patienten zugeführte Gemisch eintritt, so daß sich dessen Gehalt am verdampften Narkosemittel unerwünscht verändert. Die Länge des Rohrstückes 12 ist nun so bemessen, daß bei den maximal auftretenden Druckunterschieden im Verdampferraum 13 mit Dampf des Narkosemittels angereichertes Gas aus dem Verdampferraum mit Sicherheit nicht in die Mischkammer zurücktreten kann.In the supply line 3, a relatively long pipe section 12 is turned on, the length of which is as follows Considerations is determined. When using the device occur in the evaporator chamber 13 of the evaporator 4 pressure fluctuations in the same way as in the mixing chamber 8 and the line 11 result from the ventilation of the patient. The pressure fluctuations in the evaporator chamber 13 propagate via the supply line 3 and the by-pass 9 to the distribution chamber 2, which is the case with the known Devices could lead to evaporated anesthetic agent when the pressure is released through the distribution chamber 2 and the by-pass 9 in an uncontrollable amount via the by-pass into the dem The mixture supplied to the patient occurs, so that its content of the vaporized anesthetic is undesirable changes. The length of the pipe section 12 is now dimensioned so that the maximum occurring Differences in pressure in the evaporator chamber 13 from gas enriched with vapor of the anesthetic the evaporation chamber can certainly not step back into the mixing chamber.
Das Rohrstück 12 kann wendelförmig ausgebildetThe pipe section 12 can be formed helically
Claims (2)
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL124018D NL124018C (en) | 1961-11-18 | ||
| NL290539D NL290539A (en) | 1961-11-18 | ||
| DED37494A DE1149860B (en) | 1961-11-18 | 1961-11-18 | Vaporizer for anesthesia machines with anesthetics that are liquid at normal temperature |
| US226864A US3158154A (en) | 1961-11-18 | 1962-09-28 | Anesthesia vaporizer |
| GB37465/62A GB1001854A (en) | 1961-11-18 | 1962-10-03 | A vaporizing device for an anaesthetic apparatus |
| DED41839A DE1189235B (en) | 1961-11-18 | 1963-06-26 | Vaporizer for anesthesia machines with anesthetics that are liquid at normal temperature |
| US377814A US3313298A (en) | 1961-11-18 | 1964-06-25 | Anesthesia vaporizer |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED37494A DE1149860B (en) | 1961-11-18 | 1961-11-18 | Vaporizer for anesthesia machines with anesthetics that are liquid at normal temperature |
| DED41839A DE1189235B (en) | 1961-11-18 | 1963-06-26 | Vaporizer for anesthesia machines with anesthetics that are liquid at normal temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1149860B true DE1149860B (en) | 1963-06-06 |
Family
ID=25971340
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DED37494A Pending DE1149860B (en) | 1961-11-18 | 1961-11-18 | Vaporizer for anesthesia machines with anesthetics that are liquid at normal temperature |
| DED41839A Pending DE1189235B (en) | 1961-11-18 | 1963-06-26 | Vaporizer for anesthesia machines with anesthetics that are liquid at normal temperature |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DED41839A Pending DE1189235B (en) | 1961-11-18 | 1963-06-26 | Vaporizer for anesthesia machines with anesthetics that are liquid at normal temperature |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US3158154A (en) |
| DE (2) | DE1149860B (en) |
| GB (1) | GB1001854A (en) |
| NL (2) | NL124018C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1233537B (en) * | 1963-12-12 | 1967-02-02 | Aga Ab | Respirator |
| US6189870B1 (en) * | 1997-07-01 | 2001-02-20 | Gordon Withall | Dual port medical oxygen humidifier |
| DE10039557A1 (en) * | 2000-08-12 | 2002-02-28 | Draeger Medical Ag | Connector line between bypass line and evaporation chamber for liquid anesthesia agent, incorporates component made of material adsorbing vapor of anesthesia agent |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1156073A (en) * | 1966-12-17 | 1969-06-25 | Draegerwerk Ag | An Evaporator for Anaesthetic. |
| US4091056A (en) * | 1972-06-28 | 1978-05-23 | Veikko Hamalainen | Method of vaporizing liquids |
| SE450995B (en) * | 1986-01-21 | 1987-08-24 | Gambro Engstrom Ab | Dosing and gasification device, preferably intended for supply of anesthetic gas to a fresh gas stream in an anesthetic facility |
| US4879997A (en) * | 1988-04-07 | 1989-11-14 | Bickford Allan M | Anesthetic vaporizer |
| US5209225A (en) * | 1991-11-19 | 1993-05-11 | Glenn Joseph G | Flow through nebulizer |
| SE9802957D0 (en) * | 1998-09-02 | 1998-09-02 | Siemens Elema Ab | Carburetor |
| GB2436945B (en) * | 2003-11-11 | 2008-04-02 | Richard John Fiedorowicz | Anaesthetic vaporiser |
| DE102006044099B3 (en) * | 2006-09-20 | 2008-02-14 | Dräger Medical AG & Co. KG | Dosing device for anesthetic agent, comprises an evaporating chamber for the enrichment of part of the fresh gas with anesthetic agent and a dosing element with a gas inlet and a gas outlet with an adjusting means at the dosing element |
| US8267081B2 (en) * | 2009-02-20 | 2012-09-18 | Baxter International Inc. | Inhaled anesthetic agent therapy and delivery system |
| GB201115228D0 (en) | 2011-09-03 | 2011-10-19 | Secr Defence | Detection aid device |
| DK2770047T3 (en) * | 2013-02-26 | 2015-06-29 | Ibidi Gmbh | Device for obtaining a gas |
| US20230347098A1 (en) * | 2022-04-28 | 2023-11-02 | GE Precision Healthcare LLC | Systems for an anesthetic vaporizer gas mixer |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1302133A (en) * | 1912-03-26 | 1919-04-29 | Albert Charles Clark | Anesthetic apparatus. |
| US1094301A (en) * | 1912-05-20 | 1914-04-21 | Mcdermott Surgical Instr Co Ltd | Apparatus for administering anesthetics. |
| US2042474A (en) * | 1930-03-10 | 1936-06-02 | Martha F Mckesson | Gas administering |
| US2136245A (en) * | 1935-08-23 | 1938-11-08 | Ohio Chemical And Mfg Company | Ether vaporizer |
| US2141794A (en) * | 1936-05-06 | 1938-12-27 | Frances King | Apparatus for administering anesthetics |
| AT181355B (en) * | 1952-05-31 | 1955-03-10 | Norbert Dr Hammer | Apparatus for controllable inhalation of vapors developed from liquids or solids by the body heat of the hand surrounding the apparatus, in particular for self-analgesia using trichlorethylene |
| US2890696A (en) * | 1957-12-17 | 1959-06-16 | Lucien E Morris | Anesthesia apparatus |
| US3018777A (en) * | 1958-12-17 | 1962-01-30 | Air Reduction | Anesthetic vaporizer and administering apparatus |
| US3128764A (en) * | 1960-10-06 | 1964-04-14 | Wilbur R Koehn | Anesthesizing apparatus |
-
0
- NL NL290539D patent/NL290539A/xx unknown
- NL NL124018D patent/NL124018C/xx active
-
1961
- 1961-11-18 DE DED37494A patent/DE1149860B/en active Pending
-
1962
- 1962-09-28 US US226864A patent/US3158154A/en not_active Expired - Lifetime
- 1962-10-03 GB GB37465/62A patent/GB1001854A/en not_active Expired
-
1963
- 1963-06-26 DE DED41839A patent/DE1189235B/en active Pending
-
1964
- 1964-06-25 US US377814A patent/US3313298A/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1233537B (en) * | 1963-12-12 | 1967-02-02 | Aga Ab | Respirator |
| US6189870B1 (en) * | 1997-07-01 | 2001-02-20 | Gordon Withall | Dual port medical oxygen humidifier |
| DE10039557A1 (en) * | 2000-08-12 | 2002-02-28 | Draeger Medical Ag | Connector line between bypass line and evaporation chamber for liquid anesthesia agent, incorporates component made of material adsorbing vapor of anesthesia agent |
| DE10039557C2 (en) * | 2000-08-12 | 2003-03-13 | Draeger Medical Ag | Pressure compensation device in an anesthetic evaporator |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1001854A (en) | 1965-08-18 |
| NL124018C (en) | |
| DE1189235B (en) | 1965-03-18 |
| US3158154A (en) | 1964-11-24 |
| NL290539A (en) | |
| US3313298A (en) | 1967-04-11 |
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