SU1678380A1 - Anesthesia control system - Google Patents

Abstract

The invention relates to medical technology for anesthesia. To ensure the required depth of anesthesia and improve patient safety, the control system contains a dosimeter unit 3, a switching unit 5 for anesthetic evaporator 6, a breathing circuit 7, an exhaled gas extraction device 14, a carbon dioxide gas analyzer 15, an oxygen analyzer 16, an apnea alarm 17, a steam humidifier 18 and an intravenous administration device 19 with input channels controlling the administration rate and dose rate. 1 il. 7 911 12 13 P w Ё a vi co with co

Description

The invention relates to medical technology for. anesthesia.

The aim of the invention is to provide the required depth of anesthesia and increase patient safety.

The drawing shows a schematic diagram of an anesthesia control system.

The system contains a source of compressed respiratory gases in the form of cylinders with oxygen 1 and nitrous oxide 2. Cylinders 1 and 2 are connected to the dosimeter unit 3 via a blocking device 4, which interrupts the supply of nitrous oxide in the absence of oxygen. Block 3 and device. Station 4 can be performed similarly to these nodes in the apparatus Polynarkon-4. The output of the dosimeter unit 3 is connected to the quick-disconnecting switching unit 5 to replace the evaporator 6 anesthetics.

The system also contains a breathing circuit 7 consisting of inspiratory lines 8 and expiration 9, a pulmonary ventilation unit 10, an adsorber 11, a bag 12 and a safety valve 13, the output of which is connected to the device 14 for exhausting exhaled gases.

As the apparatus 10, the adsorber 11 and the device 14 for the extraction of exhaled gases, known blocks from the apparatus Polynarcon-4 can be used. The inlet of the device 10 is connected to the inspiratory line 8, and its output to the exhalation line 9 Bag 12 and the adsorber 11 are also connected between the inspiratory lines 8 and expiratory 9 - in front of the valve 13, with the input of the adsorber 11 connected to the exhalation line 9, and its output - to the inlet of the inspiratory line 8, which ensures switching on the switching unit 5 between the outputs of the dosimeter unit 3 and the adsorber 11.

The expiratory line 9 between the safety valve 13 and the apparatus 10 is connected to a carbon dioxide analyzer 15, for example, a GUM-4 analyzer can be used, the oxygen analyzer 16 of the AK-P type, a signaling device 17 can be connected to the inspiratory line 8. apter type Astra and steam humidifier 18 type UDS-2P.

The system also contains an intravenous injection device type 19 FEA-1 having input channels controlling the administration rate and dose rate.

The device 19, the analyzers 15 and 16, the detector 17, the apparatus 10 and the humidifier 18 have a common power supply 20, for example, from the Polynarkon-4 apparatus.

The system works as follows.

Oxygen and nitrous oxide come from cylinders 1 and 2 to the dosimeter unit 3. The locking device 4 provides for the interruption of the supply of nitrous oxide in the case of the absence of oxygen supply, which prevents the delivery of pure nitrous oxide to the patient. In block 3 of the dosimeter, oxygen and nitrous oxide are mixed in the required ratio. This ratio is determined by the anesthesiologist and set with the handles of the valve of the dosimeter unit 3.

Next, the gas mixture enters the switching unit 5 and passes through the vaporizer 1 of 6 anesthetics, where it is saturated with vapors of a liquid anesthetic substance, such as halothane. If necessary, you can quickly replace the fluorothane vaporizer with a vaporizer with another anesthetic, such as ether.

When the evaporator 6 is removed, the gas mixture passes through the switching unit 5 directly into the breathing circuit 7 and further to the patient. During exhalation, the air from the patient enters the apparatus 10, then is divided into two streams, one of which is removed from the system through the valve 13 and the discharge device 1.4, and the other enters the adsorber 11, where it is cleaned of carbon dioxide and together with fresh gas from the evaporator 6 re-enters the breath.

Based on the analysis of the gas composition of the breathing mix on inspiration and output, obtained from analyzers 15 and 16, as well as data on the clinical condition of the patient, the anesthesiologist determines the exposure parameters that provide the required depth of anesthesia for the patient. Such effects are the anesthetic vapor concentration of the inhalation mixture, set by the evaporator controller 6, the dose rate and drug delivery rate set by device 19, the nitrogen oxide concentration in the breathing mixture, set by the dosimeter unit 3, and the temperature of the breathing mixture, which is set by the humidifier 18. If necessary, the anesthesiologist can change the liquid anesthetic during replacement by replacing the evaporator. 6. The apnea detector 17 produces light and sound signals when it is stopped. respiration, which increases the safety of anesthesia.

The system provides the ability to control anesthesia by combining various anesthetic effects, which greatly expands the ability of the anesthesiologist, allows for anesthesia to be tailored to the individual characteristics of each patient. These factors caused51678380b

ability to maintain the required depth of anesthesia and

for a given patient, the depth of anesthesia. increased patient safety, the system is equipped with quick-disconnect switches. The formula of the inventive unit for replacing the evaporator, the anesthesia control system, contains 5 installed between the output of the unit, the dosage source of compressed gases, the series and the breathing circuit, analytically connected a dosimeter unit, an oxygen torch, a steam humidifier and an evaporator of anesthetics, and a respiratory apnea monitor, included in the litter with the inhalation and exhalation lines and inhalation apparatus Ator carbon dioxide, artificial pulmonary ventilation, adsorption-10 included in the output line, and a device set. bag and safety valve-internal injection of medicinal veins and a device for exhalation of exhaled substances having inlet channels controlled by gases, characterized in that, with a view to the speed of administration and dose values.

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Claims (1)

Claim An anesthesia control system containing 5 a source of compressed gases, a dosimeter unit connected in series, an anesthetic vaporizer and a breathing circuit with inhalation and expiration lines and an artificial lung ventilation apparatus, an adsorber, a bag and a safety valve, and an exhaled gas evacuation device, characterized in that, in order to ensure the required depth of anesthesia and increase patient safety, the system is equipped with a quick-disconnect switching unit for replacing the evaporator installed between the output of the dose unit meters and a breathing circuit, an oxygen analyzer, a steam humidifier and an apnea signaling device included in the inspiratory line, a carbon dioxide analyzer included in the output line, and an internal drug administration device with input channels for controlling the rate of administration and dose rate. Compiled by A. Radaev Editor I. Shulla Tehred M. Morgenthal Corrector M. Kucheryavaya Order 3160 Circulation 380 Subscribed. VNIIIPI of the State Committee for Inventions and Discoveries under the State Committee for Science and Technology of the USSR, - 113035, Moscow, Zh-35, Raushskaya nab., 4/5 Production and Publishing Combine Patent, Uzhgorod, 101 Gagarin St.