SU146908A1 - The method of controlling the concentration of inhaled drugs during inhalation anesthesia - Google Patents
The method of controlling the concentration of inhaled drugs during inhalation anesthesiaInfo
- Publication number
- SU146908A1 SU146908A1 SU691108A SU691108A SU146908A1 SU 146908 A1 SU146908 A1 SU 146908A1 SU 691108 A SU691108 A SU 691108A SU 691108 A SU691108 A SU 691108A SU 146908 A1 SU146908 A1 SU 146908A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- concentration
- controlling
- during inhalation
- inhalation anesthesia
- drugs during
- Prior art date
Links
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
Известны способы определени концентрации газов путем измерени теплопроводности. Известны также способы контрол концентрации вдыхаемых наркотиков по принципу поглощени инфракрасных лучей наркотическими парами и газами.Methods are known for determining the concentration of gases by measuring the thermal conductivity. There are also known methods for controlling the concentration of inhaled drugs on the principle of absorption of infrared rays by narcotic vapors and gases.
Описываемый способ отличаетс от известных тем, что дл определени концентрации вдыхаемых наркотиков при ингал ционном наркозе используют электроприбор, по которому измер ют сопротивлени одинаково нагретых посто нным током платиновых проволок. Одна из проволок омываетс воздухом, друга - исследуемым газом.The described method differs from the known ones in that in order to determine the concentration of inhaled drugs during inhalation anesthesia, an electrical device is used, by which the resistances of equally heated constant-current platinum wires are measured. One of the wires is washed with air, the other with the gas to be tested.
При этом шкалу электроприбора градуируют в % наркотика. Указанные преимущества предлагаемого способа обеспечивают определение глубины наркоза по процентному содержанию наркотиков во вдыхаемой газовой смеси на основе различной теплопроводности газов и паров в сравнении с воздухом.In this case, the scale of the appliance is graduated in% of the drug. These advantages of the proposed method provide for determining the depth of anesthesia by the percentage of drugs in the inhaled gas mixture based on the different thermal conductivity of gases and vapors in comparison with air.
Принципиальна схема устройства дл осуществлени способа приведена на чертеже.A schematic diagram of an apparatus for carrying out the method is shown in the drawing.
Устройство содержит две не сообщающиес друг с другом камеры / и 2. Внутри камер помещены сопротивлени 3, 4, 5 и 6, выполненные в виде платиновых проволок. Сопротивлени 5, 4 и 5, 6 образуют противоположные плечи моста, в одну диагональ которого включен измерительный гальванометр 7, а в другую - источник посто нного тока. Величина тока в мосте регулируетс сопротивлением 8. Установка гальванометра на нуль осуществл етс регулировкой реостата 9. Посто нный ток, протека по сопротивлеии м , нагревает их. При этом изменение величины сопротивлений зависит от среды, в которую они помец1 ,ены. Если в одну из камер поместить воздух, а в другую - ингал ционннй наркотик, то по разбалансировке моста можно судить о теплопроводности наркотика, а следовательно, и о его концентрации.The device contains two non-communicating chambers / and 2. Inside the chambers, resistors 3, 4, 5 and 6, made in the form of platinum wires, are placed. Resistances 5, 4 and 5, 6 form the opposite shoulders of the bridge, in one diagonal of which a measuring galvanometer 7 is included, and in the other - a source of direct current. The magnitude of the current in the bridge is regulated by the resistance 8. The setting of the galvanometer to zero is carried out by adjusting the rheostat 9. The constant current, flowing through the resistance m, heats them. At the same time, the change in the resistance value depends on the environment in which they are put1, eny. If air is placed in one of the chambers, and an inhalation drug is placed in the other, then the unbalance of the bridge can be used to judge the thermal conductivity of the drug, and, consequently, its concentration.
Поэтом} шкалу измерительного гальванометра 7 можно проградуировать в единицах концентрации наркотика.Therefore} the scale of measuring galvanometer 7 can be calibrated in units of concentration of the drug.
Предмет изобретени Subject invention
Способ контрол концентрации вдыхаемых наркотиков при ингал ционном наркозе, отличающийс тем, что, с целью определени глубины наркоза по процентному содержанию наркотиков во вдыхаемой газовой смееи на основе различной теплопроводимости газов и паров в сравнении с воздухом, его осуществл ют термоэлектрометрическим путем по электроприбору, замер ющему изменение сопротивлений одинаково нагретых посто нным током платиновых проволок, омываемых в одном канале воздухом,, а в другом - исследуемым газом , при этом шкалу электроприбора градуируют в процентах наркотика .The method of controlling the concentration of inhaled drugs during inhalation anesthesia, characterized in that, in order to determine the depth of anesthesia by the percentage of drugs in the inhaled gas, based on different thermal conductivities of gases and vapors in comparison with air, it is carried out by thermoelectrometric means, using the change in resistance of the equally heated DC current of platinum wires, washed in one channel with air, and in the other - with the gas under investigation, while the scale of the electric device is Perform in percent of the drug.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU691108A SU146908A1 (en) | 1960-12-28 | 1960-12-28 | The method of controlling the concentration of inhaled drugs during inhalation anesthesia |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU691108A SU146908A1 (en) | 1960-12-28 | 1960-12-28 | The method of controlling the concentration of inhaled drugs during inhalation anesthesia |
Publications (1)
Publication Number | Publication Date |
---|---|
SU146908A1 true SU146908A1 (en) | 1961-11-30 |
Family
ID=48302332
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU691108A SU146908A1 (en) | 1960-12-28 | 1960-12-28 | The method of controlling the concentration of inhaled drugs during inhalation anesthesia |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU146908A1 (en) |
-
1960
- 1960-12-28 SU SU691108A patent/SU146908A1/en active
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