EA016968B1 - System for delivering anesthetic with piezodoser and thermostatted evaporation chamber - Google Patents

Abstract

A system for delivering anesthetic with piezodoser and a temperature-controlled evaporation chamber provides to dose precisely a liquid anesthetic (subnanoliter). The system is characterized by low power consumption and small sizes. The inventive result is achieved by using a disposable cartridge with a piezodoser, an evaporation chamber with a temperature-controlled plate thus increasing reliability of said system and practically excluding the evaporator service after an operation.

Description

The invention relates to medical equipment and can be used as part of anesthesiological complexes during surgical treatment in medical institutions, during inhalation anesthesia.

The level of technology

The structure of modern devices inhalation anesthesia, includes a dispenser and evaporator liquid anesthetics. All dispensers and vaporizers that exist today do not have sufficient accuracy for dispensing liquid anesthetics, they are heavy and heavy.

Therefore, all the leading companies in this field create various modifications of evaporators and dispensers.

The latest developments on the dispenser were from the company ΌΚΆ6ΕΚ MEIGSAI AU Patent No. ΌΕ10124886, which proposed a piston dispenser, and from the ME88EK АИ8ТК1А СМВН, considering the version of the dispenser with a catheter.

In Russia, the company Urals Instrument-Making Plant, Patent No. 2197999, offers its version of the device for inhalation anesthesia. All of these options have several major drawbacks:

there is no possibility of an urgent (hot) replacement of the anesthetic during the operation;

all dispensers are not disposable, resulting in complicated maintenance of such dispensers.

The objectives of this invention

The purpose of the invention is to find opportunities for accurate dosing, control of anesthetic consumption and in small dimensions to ensure the conversion of liquid anesthetic into saturated steam;

creation of disposable cartridges with integrated piezo dispenser.

Summary of Invention

A device known cartridge cartridge with ink material for inkjet printers, various companies, such as "8", Sapop and others.

ZAO Zavod Elektromedoborudovanie developed a device with a similar cartridge containing a piezo dispenser designed for precise dosing of anesthetic. A piezo dispenser built into the cartridge allows the anesthetic to be delivered by nanoportions to the evaporator with great precision. Cartridge disposable, which allows to increase the reliability of systems as a whole. This solution allows hot-swappable cartridge during surgical treatment.

An electronic chip is inserted into the cartridge, in which information about the anesthetic is recorded: type of substance, manufacturer, date of manufacture, expiration date, number of nanoports.

The design of the system provides the ability to install cartridges with different anesthetics, while the body of cartridges containing different anesthetics, have their own unique installation location.

Thus, the cartridge can only be installed under its installation location, which eliminates the human factor.

When installing the cartridge, the system itself determines the type of cartridge and, accordingly, the anesthetic.

A thermostatted plate (heating element) is provided in the design of the evaporator. Depending on the type of anesthetic, the system automatically sets the temperature of the heating element (plate), which corresponds to the boiling point of the anesthetic. The doctor sets only two parameters: gas flow and anesthetic concentration.

High precision dosing of the anesthetic is achieved using a piezo-dispenser, which supplies the fluid with nanoports (fractions of nanoliter).

The disposability of the cartridges will dramatically increase the reliability of the system, hot-replace the cartridge during the operation and quickly switch to another type of anesthetic, and the maintenance of the evaporator after the operation is practically negated.

DISCLOSURE OF INVENTION

The invention is illustrated in the drawing, which shows the system of supply of anesthetic with piezo and thermostatic evaporation chamber.

The system includes (see drawing) a fresh gas flow sensor, an evaporator chamber with a heating element and a temperature sensor, a piezo-dispenser cartridge, an anesthetic concentration setting organ.

The evaporator chamber is designed to convert a liquid anesthetic into a vapor state. This is achieved by a heating element (thermostatic chamber) in the evaporator, the temperature of which is kept constant at the boiling level of this anesthetic using a controller and a temperature sensor.

A cartridge with a piezo-dispenser provides accurate flow of liquid anesthetic (nanolithra fractions), the amount of which is controlled by the controller. The doctor sets only two parameters - the percentage of concentration depending on the flow of fresh gas and the flow of liquid anesthetic.

Also the cartridge with piezo dispenser is disposable and is installed in a certain place in

- 1 016968 system housing - a seat that eliminates the human factor.

The entire system has low energy consumption and is lightweight and heavy.

Industrial Applicability

The company Zavod Elektromedoborudovanie has developed an anesthetic supply system with a piezo dispenser and a thermostatically controlled evaporation chamber designed for precise dosing of anesthetic.

This scheme is easy to manufacture.

Cartridges are disposable, which allows you to dramatically increase the reliability of the system, and also virtually eliminates the maintenance of the evaporator after the operation.

Claims (6)

1. Anesthetic supply system comprising a thermostatically controlled evaporator chamber with a heating element and a temperature sensor, an anesthetic cartridge with a piezoelectric meter, a controller, an anesthetic concentration setting organ and a fresh gas flow sensor. 2. The system according to claim 1 is characterized in that the cartridge with a piezoelectric doser contains a liquid anesthetic and is disposable. 3. The system according to claim 1 is characterized in that an electronic chip is mounted in the cartridge with the piezoelectric doser, onto which information about the liquid anesthetic is recorded. 4. The system according to claim 1 is characterized in that it contains a thermostatic plate as a heating element, which, depending on the type of anesthetic, is heated to the boiling point of this anesthetic. 5. The system according to claim 1 is characterized in that it allows for hot swapping of a cartridge with a liquid anesthetic during surgery. 6. The system according to claim 1 is characterized in that there are seats for each type of liquid anesthetic in the system case.