RU1780762C - Inhaler - Google Patents

Abstract

Usage: in the treatment of respiratory tract aerosol of medicinal substances. SUMMARY OF THE INVENTION: The inhaler is provided with a vertical diffuser 6 located between the liquid container 1 and the chamber 4, which has perforated partitions 7 with a removable mass transfer nozzle 9.1 zp located between them. f-ly, 1 ill.

Description

The invention relates to medical equipment, in particular to devices for inhalation by personal means outside a medical institution or outpatient clinic (at home).

A known method of producing condensation aerosols and a device for its implementation, which consists in the fact that the liquid is fed into a capillary-porous material, which is heated by a heat stream of this power. that the liquid-vapor phase interface is mounted on a capillary-porous structure, and steam is condensed to obtain aerosol monodispersity. A device for implementing the method includes a liquid feeding vessel, a connecting pipe, an evaporation tank, a heater, a heated evaporating element in the form of a capillary-porous septum, a steam pipe, a steam condensate return separator unit, a steam flow regulator, and a steam trap.

The closest in technical essence and the achieved result to the proposed solution is an inhaler for

simplification of the respiratory function, comprising a receiving nozzle for oil filling, an expander, an elbow, an evaporation cylinder with a variable flow cross-section due to a number of variable spherical indentations and a steam line.

An individual inhaler operates as follows.

The patient controls the rate of formation of an aerosol mixture of oil and air entering the mucous membrane of the larynx or nose by the volume of inhaled air. A stream of air drawn into the inhaler throws the oil into an evaporation bottle in which it is crushed into droplets and a vapor phase forms in a mixture with air. When the larynx and throat are inhaled, the vapor pipe of the inhaler is taken with the lips, and after inhaling the mixture, it is recommended to exit through the nose. If necessary, inhalation of the nasal mucosa on the steam line puts on a bifurcator inserted into the nasal openings, while exhalation is emitted through the mouth. After each inhalation of the mixture during a breathing pause and exhalation, the oil flows by gravity to the walls of the evaporator (L

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A full-blown BHA returns to the knee and the process is cyclically repeated until the oil has completely evaporated and dispersed.

If necessary, the intensity of formation of the aerosol mixture can be increased by immersion of the lower part of the inhaler in a container with warm or hot water.

If the main disadvantage of the device is the complexity of the design and the possibility of conducting a treatment course in an inpatient or outpatient setting, that is, the patient cannot take a course of treatment at home, then the known device eliminates this disadvantage, but still has a number of constructive and process-technological shortcomings, namely, the complexity of the design of the vaporization balloon and its manufacture, the lack of devices that prevent large MScftsi from entering the patient's nasopharynx, is insufficient erhnost evaporation, in connection with which a person of n and n pvr spine using heavier (at evaporated emosti) even oils of heating does not bring the desired intensity aerosol mixture. In addition, the formation and ingestion of large drops of oil often leads to spasms in the breath and burns of the mucous membrane.

The purpose of the invention is to increase safety by preventing the ingress of large particles of the drug substance and the airways of the patient.

This goal is achieved in that the inhaler comprising a fluid container with an air supply tube and a spray chamber with an outlet nozzle is provided with a vertical diffuser located between the fluid container and the chamber, which has a perforated partition with an interchangeable mass transfer nozzle disposed between them. In addition to the toga, the connection of the spray chamber with the outlet is made detachable.

The drawing shows the design of a personal use inhaler.

The inhaler contains a liquid container 1, an air supply tube 2 with an expander 3, a spray chamber 4, an outlet pipe 5, a vertical diffuser 6. Perforated partitions 7 with holes 8 are installed in the spray chamber 4. A removable mass transfer nozzle 9 is placed between the partitions 7. The outlet 5 is connected to the spray chamber 4 by a sealing connector 10

The inhaler works as follows. A medicinal product is poured into the container 1 through an air supply tube 2 with an expander 3 in an amount of 0.5-1.5 cm3.

During inhalation of the larynx, the patient takes the outlet pipe 5 with his lips and begins to inhale the air, which ejects the drug through the diffuser 6 onto the perforated partition 7. Through the holes 8

0, the preparation in the form of a spray enters nozzle 9, where it is held up and then by a stream of inhaled air, turbulizing (shaking) nozzle 9, carried away into the outlet 5 and further into the larynx (throat) of the patient. A part of the aerosol mixture that has passed through the nozzle layer 9 and the upper perforated septum 7, but which does not enter the patient’s larynx, but deposits from the walls of the spray chamber 4, drains

0 to nozzle 9 and is retained by it in the spray chamber. And the part of the medicinal product that got on the wall of the diffuser 6 and didn’t get on the nozzle 4 drains back into the container 1 during the patient's exhalation through

5 nose.

Upon repeated inhalation through the air supply tube 2. the preparation from the container 1 is again carried away by the air flow through the diffuser 6 and the partition 7 to the nozzle 4 and

0 the process of turbulization of the nozzle 4 with the spraying of the drug is repeated.

If necessary, inhalation of the nasal cavity on the output pipe 5 puts on a splitter and is inserted into the nasal openings

5 patients, while exhalation is through the mouth.

The expander 3 on the air supply tube 2 serves to prevent the release of a medicinal product, which may

0 occur if the patient exhales through the inhaler in the opposite direction.

The mass transfer nozzle is a rounded particle of a material inert to the medicinal product, for example: particles of polyethylene and fluoroplastic with sizes from 1.5 to 5 mm, which are placed in the spray chamber 4 in 3-4 layers. At the same time, smaller particles (1.5-2mm) are recommended for use with preparations

0 with low evaporation, and larger (2.5-5 mm) for volatile preparations.

If it is necessary to intensify the process of obtaining an aerosol mixture, an inhaler with a selected nozzle can be preheated in a water bath and the inhalation process itself can also be accompanied by heating.

The advantages of the proposed design of the inhaler are the impossibility of large droplets of the drug passing through the nozzle into the patient’s airways, the more stable the rate of formation of the aerosol mixture both at the beginning and at the end of the process, i.e. the intensity does not depend on the amount of the drug in the container, and the ability to control the intensity through the use of a replaceable nozzle.

Claims (2)

SUMMARY OF THE INVENTION 1. An inhaler comprising a liquid container with an air supply tube and a spray chamber with an outlet nozzle, characterized in that, with In order to increase safety by preventing large particles of the drug from entering the patient’s airways, it is equipped with a vertical diffuser located between the fluid container and the chamber, which has perforated baffles with a removable mass transfer nozzle located between them. 2. Inhal tor pop. 1, characterized in that the connection of the spray chamber with the outlet pipe is detachable. Aerosol  7 Lodogreb in a water wound