FR3011718A1 - DEVICE FOR ORAL INHALATION OF A GAS, SUCH AS AN ELECTRONIC CIGARETTE - Google Patents

Abstract

The present invention relates to an inhalation device such as an electronic cigarette, comprising: - a cartridge (103) comprising: ○ a reservoir (106) shaped to contain a liquid substance (111), and ○ at least one column for heating (113), - a device for atomizing (119) the adapted liquid substance, when activating actuating means for vaporizing in the heating column at least a part of the liquid substance contained in the reservoir a source of electrical power supplying the device for atomizing the liquid substance. The device according to the invention is remarkable in that it comprises volumetric metering means for the inhaled gas adapted to alternatively allow the vaporization of the substance. liquid when the concentration of the vaporized gas is less than a predetermined value, and to prohibit said vaporization when the concentration of the gas in liquid substance vaporized reaches said predetermined value.

Description

The present invention relates to an oral device for inhalation of a gas, such as an electronic cigarette. The electronic cigarette is generally used by persons who wish to quit smoking or who wish to change their smoking habits with respect to the conventional cigarette. Such a device makes it possible to heat a liquid substance up to its vaporization temperature. The user inhales the vaporized liquid substance orally, and the vaporized substance enters the body of the user through the respiratory tract. To do this, an electronic cigarette 1 known from the prior art and schematically illustrated in Figure 1 is generally in the form of a cylinder comprising a cartridge 3 at the ends of which are mounted a power source 5 and a mouthpiece 7. The cartridge 3 comprises at its inner part a reservoir 9, generally refillable, containing a liquid substance 11 intended to be vaporized, and a heating column 13 through which the ambient gas 15, impregnated with or not) of the vaporized liquid substance 11 when the electronic cigarette is in operation. Such a liquid substance 11, generally called "e-liquid" in English terminology, is typically constituted by a mixture of propylene glycol and vegetable glycerine, flavorings, water and generally nicotine, and has the property to be able to evaporate at a temperature of the order of 55 degrees Celsius. The power supply 5 supplies an operating light 17, constituted for example by a red light-emitting diode, and an atomising device 19 of the liquid substance 11 to the electric current. The atomizing device 19 comprises typically a heating resistor positioned near wicks arranged in the electronic cigarette to move the liquid substance 11 from the tank 9 by capillary action to the heating column 13. The atomizing device 19 is connected to actuating means, by example constituted by a push button 21 accessible by the user from outside the electronic cigarette. The pushbutton 21 is itself connected to a contactor 23 adapted to establish a connection between the power source and the heating resistor during activation of the actuating means. The mode of operation of the electronic cigarette 1 is as follows.

When the user wishes to inhale outside air impregnated with a portion of the vaporized liquid substance 11, he exerts a pressure on the push button 21 which activates the contactor 23. An electric current is then emitted by the power supply electrical 5 to the electrical resistance of the atomizing device 19.

Under the effect of heating the resistance, the liquid substance, brought by capillarity through the wicks 27 in the heating column 13, vaporizes, when the vaporization temperature of said substance is reached. The user sucks via the mouthpiece 7 of the ambient gas 15, which enters the heating column 13 through a thread provided between the cartridge 3 and the portion of the electronic cigarette containing the power source 5. The The ambient outside gas then mixes with the vaporized liquid substance 11, and then enters a conduit 22 provided in the mouthpiece 7, bringing the ambient gas soaked with the vaporized substance 20 to the mouth of the user. When the user no longer wishes to inhale, he deactivates the actuating means of the atomizing device, rendering the heating of the resistance inactive and stopping the vaporization of the liquid substance. Thus, it is the user himself who controls at will the heating of the liquid substance by the activation and deactivation of the actuating means, this liquid substance being able for example to be constituted by a liquid of the type " e-liquid ", a liquid that may contain nicotine and is intended to replace the mixture contained in a traditional cigarette. Furthermore, it is even envisaged in the prior art document GB 2 466 758 to use the electronic cigarette as a means for administering a substance containing sildenafil citrate sold under the trademark " Viagra ® ". Depending on the size of the reservoir, a greater or lesser amount of liquid substance may be contained in the cartridge of the electronic cigarette. For example, some reservoirs may contain a nicotine dosage equivalent to a traditional cigarette cartridge, which corresponds to about 120 mg of nicotine. Such nicotine consumption over an inappropriate period of time is not recommended, and may even be dangerous to the health of the consumer, in that daily over-consumption can lead to symptoms such as cardiovascular disease. Likewise, failure to respect the dosage (the amount of a drug to be administered in one or more times to treat a disease) of a drug substance is very dangerous to the patient, in that a drug in a defective amount may result in ineffective treatment, and taking a drug in an excess amount may result in adverse side effects. Thus, regardless of the type of liquid substance, drug or not, it is understood that there is a need for the user of the electronic cigarette to know precisely the amount of liquid substance that inhales. The present invention aims to solve the disadvantages of electronic cigarettes known from the prior art, and proposes for this purpose an oral device for inhalation of a gas, such as an electronic cigarette, comprising: a cartridge comprising a reservoir shaped to contain a liquid substance, and a heating column, a device for atomizing the liquid substance adapted, when activating actuating means, to vaporize in the heating column at least a part of the liquid substance contained in the reservoir; a source of electrical power supply supplying the atomization device of the liquid substance with electric current, said device being remarkable in that it comprises volumetric metering means of the inhaled gas adapted to alternatively allow the vaporization of the liquid substance when the concentration of the vaporized gas is less than a value predetermined, and to prohibit said vaporization when the concentration of vaporized liquid substance gas reaches said predetermined value. Thus, by providing such volumetric counting means, the inhalation device according to the invention makes it possible to deliver a predetermined quantity of liquid substance contained in the reservoir, this quantity being smaller than the total volume of the liquid substance contained in the tank. By way of example, when the liquid substance is a medicinal substance, the volumetric metering means for inhaled gas are adapted to alternatively allow the vaporization of the liquid medicinal substance when the concentration of the gas in said vaporized substance is less than a predetermined value. , corresponding to all or part of the dosage of the drug substance, and prohibit said vaporization when the concentration of vaporized liquid substance gas has reached said predetermined value, which allows to accurately respect the dosage of a drug. Thus, a first advantage of the device according to the invention is to allow the use of the electronic cigarette as a particularly reliable means for administering a drug substance safely to the patient, in that the dosage is met with precision. In addition, the administration of such a substance via the pulmonary pathways substantially increases the rate of diffusion in the blood of the drug substance, compared with a method of the prior art in which the diffusion in the blood is effected by digestive tract.

When the liquid substance is of the "e-liquid" type, the device according to the invention makes it possible to deliver a predetermined quantity of said substance, this quantity corresponding to a quantity of inhaled nicotine, which ultimately enables a user to know the equivalent in number of traditional cigarettes that he allegedly smoked.

According to the invention, the volumetric counting means of the inhaled gas may comprise at least one impeller connected to a device for counting the number of revolutions of said wheel, said counting device being connected to an electrical switch arranged to block the passage current between the power source and the atomizer device of the liquid substance when a predetermined number of revolutions of said wheel is reached. The impeller is set in motion by the passage of the gas when the user draws in the device according to the invention, and the number of revolutions of said wheel corresponds to a certain volume of gas, soaked or not with the liquid substance. vaporized, which will be inhaled by the user.

By providing a device for counting the number of revolutions of the wheel connected to an electrical switch arranged to block the flow of current between the power source and the atomization device of the liquid substance when the predetermined number of revolutions of said 5 wheel is reached, the atomizing device is no longer supplied with electricity. Thus, the vaporization of the liquid substance in the gas sucked by the user is stopped when a certain volume of said substance has been inhaled by the user. In other words, even if the user continues to suck in the device according to the invention, the inhaled gas would only consist of external ambient gas, not soaked with the liquid substance contained in the reservoir of the cartridge. Finally, the realization of the volumetric counting means of the inhaled gas by means of a paddle wheel connected to a device for counting the number of revolutions of said wheel constitutes a simple and inexpensive technical solution to implement. The device for counting the number of revolutions of the impeller comprises elastic return means mounted on a rotation shaft of said wheel. More specifically, the elastic return means comprise a helical spring, which constitutes a particularly simple solution to implement for counting the number of revolutions of the impeller. Alternatively, the device for counting the number of revolutions of the impeller comprises at least one digital revolution counter. Advantageously, the inhalation device according to the invention comprises means for resetting the counting device of the number of revolutions of the wheel, arranged to move the switch from an open position in which it blocks the flow of current between the source. power supply and the device for atomizing the liquid substance to a closed position in which it authorizes said passage of the current. Thus, by thereby resetting the counting means, the switch moves from its open position to its closed position, in which position the atomizing device is supplied with electric current, which makes it possible to start a new heating cycle.

The paddle wheel and the counting device of the number of revolutions of said impeller are preferably positioned inside the heating column of the cartridge. According to a second embodiment, the inhalation device 5 according to the invention further comprises means for deactivating the volumetric counting means of the inhaled gas when the device for atomizing the liquid substance is inactive. Thus, the volumetric metering means of the inhaled gas are active only when the device for atomizing the liquid substance is itself active, which makes it possible to count only the volume of inhaled gas actually soaked with the vaporized liquid substance. This very advantageously makes it possible to avoid an erroneous count of the quantity of inhaled vaporized liquid substance which may occur in the case where the user only triggers the activation of the atomization device of the liquid substance after having started to suck up the ambient gas via the inhalation device according to the invention. Accordingly, with this feature, the amount of inhaled air effectively soaked with the vaporized liquid substance is accurately determined. This characteristic is of particular interest when the liquid substance is medicinal in that it makes it possible to exactly respect the dosage of the medicament to be inhaled. More specifically, the means for deactivating the volumetric counting means of the inhaled gas when the device for atomizing the liquid substance is inactive comprise disengaging means between the impeller and the device for counting the number of revolutions of said wheel. , shaped to pass from a disengaged position to a position engaged during the activation of the actuating means of the atomizing device. According to a third embodiment of the inhalation device 30 according to the invention, said device comprises a mouthpiece integral with the cartridge, the volumetric counting means of the inhaled gas are positioned inside said nozzle. According to an optional feature of the invention, the inhalation device comprises a mechanical valve arranged to block at least partially the passage of gas in the heating column or in the mouthpiece when the concentration of vaporized liquid substance gas reaches the predetermined value. Such a valve constitutes a mechanical means of blocking the gas passing through the heating column, which can be used in addition to the electric switch when the concentration of the gas vaporized liquid substance reaches the predetermined value. Thus, any mistaken liquid substance is avoided when the predetermined quantity of said substance has been inhaled. Finally, according to a fourth embodiment, the volumetric metering means of the inhaled gas consist of a device for managing the electrical power delivered by the power supply source, adapted to allow the power supply of the device to be electrically powered. atomizing when the electric power per unit time is less than a predetermined value and for blocking said power supply when the power delivered per unit of time reaches said predetermined value. More specifically, the device for managing the electric power delivered by the power supply source furthermore comprises a box for acquiring the electrical power delivered by the electric power source positioned in said power supply source. Other characteristics, objects and advantages of the present invention will appear on reading the following description and on examining the appended figures, in which: FIG. 1 schematically illustrates an electronic cigarette according to the art previous; FIG. 2 illustrates the inhalation device according to a first embodiment of the invention, seen in longitudinal section and centered on the cartridge; FIG. 3 is a view similar to FIG. 2, the inhalation device being made according to a second embodiment; FIG. 4 represents a third embodiment of the inhalation device, seen in longitudinal section; FIG. 5 illustrates the inhalation device produced according to an alternative embodiment of the device represented in FIG. 4; FIG. 6 illustrates a fourth embodiment of the inhalation device according to the invention. Throughout the figures, like or similar references denote identical or similar members or sets of members. Referring to Figure 2 illustrating the electronic cigarette according to a first embodiment of the invention, longitudinal sectional view centered on the cartridge of said cigarette. The electronic cigarette 101 comprises a cartridge 103 at the ends of which are mounted a power source 105, which may consist of a rechargeable electric battery 106, and a mouthpiece 107, both for example fixed by screwing on the cartridge 103 of E-cigarette. The cartridge 103 comprises at its inner part a refillable reservoir 109, containing a liquid substance 111 intended to be vaporized, and a heating column 113. The liquid substance 111 is constituted by any medicinal liquid substance or not. By way of example, a medicinal substance may be produced by a solution comprising an active principle included in the following non-exhaustive group: paracetamol, ibuprofen, morphine, sildenafil citrate. A non-medicinal substance may for its part be of the "e-liquid" type in the English terminology, which substance has the property of being able to evaporate at a temperature of about 55.degree. propylene glycol and vegetable glycerin, flavors, water and nicotine. The power source 105 is connected to a power supply device via an electric switch 123 controlled by an external push button 121 accessible by the user from outside the electronic cigarette. The electric contactor 123 is connected to an atomizing device 119 of the liquid substance 111, comprising a heating resistor 125 positioned near wicks 127 shaped to move the liquid substance 111 from the reservoir 109 of the cartridge 103 towards the heating column 113.

According to the invention, the heating column 113 comprises a blade wheel 129 rotatably mounted on a substantially longitudinal shaft relative to the electronic cigarette 101, and connected to a counting device for the number of revolutions of said wheel.

The impeller is mounted in the heating column, for example near a shoulder 130 defining a duct 131 communicating with the mouthpiece 107. Alternatively, the portion of the cartridge receiving the duct 131 may come into direct contact with the mouth of the user.

As shown in FIG. 2, the device for counting the number of revolutions of the impeller 129 is constituted by a helical spring 132, one end of which is mounted on the shaft of said impeller, so that when the impeller is driven in rotation, the coil spring 132 is compressed.

For the purposes of the invention, the coil spring is dimensioned so that its stiffness allows a predetermined number of revolutions of the wheel, as explained in more detail in the following description. Of course, any other resilient biasing means known to those skilled in the art is contemplated in the present invention. Similarly, according to a variant not shown in the figures, the coil spring can be replaced by a digital tachometer. The coil spring 132 is furthermore connected to an electric switch 133 positioned between the electric contactor 123 and the heating resistor 125 of the atomizing device 119 of the liquid substance 111. In the closed position, the electric switch 133 allows the passage of the current between the current electrical source 105 and the heating resistor 125, while in the open position the switch blocks such a passage of current. As described in more detail in the following description, the open position of the switch is obtained when the coil spring 132 is in fully compressed position, reached position when the paddle wheel has made a number of revolutions. The operation of the electronic cigarette according to the invention is as follows. When the user wishes to inhale ambient gas 115 impregnated with a part of the vaporized liquid substance 111, he exerts pressure on the pushbutton 121, which has the effect of activating the electric contactor 123. Alternatively, the contactor can be activated via a piezoresistor shaped to activate the electric switch when the user sucks in the electronic cigarette.

An electric current is emitted by the power source 105 and passes through the electric switch 133 then in the closed position, to reach the heating resistor 125 of the atomizing device 119. Under the effect of the heating of the resistor, the liquid substance, brought by capillarity through the wicks 127 from the reservoir to the heating column 113, vaporizes, when the vaporization temperature of said substance is reached. The user draws via the mouthpiece 107 ambient gas 115, which enters the heating column 113 through a thread 135 provided between the cartridge 103 and the power source 105, as schematically shown by the arrows on Figure 2. The ambient outside gas is then mixed with the vaporized liquid substance 111. The mixture passes through the heating column 113 until it reaches the impeller 129. The passage of the gaseous mixture then drives the impeller 129 in rotation. The impeller shaft, in engagement with the coil spring 132, causes the coil spring to move in compression. The spring is dimensioned to allow a predetermined number of revolutions of the impeller, corresponding to a certain volume of gas passing through said wheel. When the spring comes into abutment, i.e. when it is fully compressed, it means that the concentration of the vaporized gas has reached a predetermined value that one wished to inhale. Such an abutment position of the coil spring causes the switch 133 to move from its closed position allowing the electrical current to pass between the power source 105 and the atomizing device 119 to its open position, blocking such a device. passage. Thus, when a predetermined number of revolutions of the impeller 129 is reached, i.e., when the concentration of the vaporized liquid substance gas has reached the desired predetermined value, the switch 133 controls the shutdown. heating the resistor 125 of the atomizing device 119 by blocking the passage of electric current between the power source 105 and said atomizing device 119, which prevents the vaporization of the liquid substance 111 contained in the reservoir 109 of the cartridge 103 of the electronic cigarette. In the case where the device for counting the number of revolutions of the impeller 129 is constituted by a digital tachometer, the tachometer is connected to the electric switch 133 to which it emits an electrical signal to control its passage through open position when the predetermined number of revolutions of the impeller is reached. At this stage, the inhalation of ambient gas 115 is still possible, but the latter is no longer soaked with liquid substance. Thus, as we have just seen, the assembly comprising the impeller 129, the helical spring 132 or the digital tachometer, and the switch 133, constitute volumetric counting means of the inhaled gas, adapted to alternatively enable vaporising the liquid substance when the concentration of the substantially vaporized gas is below a predetermined value, and to prohibit said vaporization when the concentration of vaporized liquid vapor gas reaches said predetermined value. Furthermore, the electronic cigarette according to the invention comprises means for resetting the counting device of the number of revolutions of the wheel. To do this, the electronic cigarette comprises a reset button (not shown in the figures) accessible by the user from the outside arranged to move the coil spring 132 25 from its compressed position to a position allowing the passage of the switch from its open position to its closed position. When the paddle revolution counting device is constituted by a digital tachometer, the reset push button sends an electrical signal to reset the digital tachometer, which controls the passage of the digital tachometer. switch 133 from its open position to its closed position. Thus, when the user wishes to activate again the heating of the atomizing device, it exerts a pressure on the reset push button. To stop the vaporization of the liquid substance when the switch is in the closed position, that is to say when the atomizing device and the volumetric metering means of the inhaled gas are potentially in operation, the user presses the push button 121, which deactivates the electric switch 123 and cuts off the power supply of the heating resistor 125 of the atomizing device. Referring now to Figure 3 illustrating a second embodiment of the electronic cigarette according to the invention. In this embodiment, the electronic cigarette 101 includes means for disabling the volumetric metering means 10 of the inhaled gas when the atomizer device 119 of the liquid substance is inactive. For this purpose, disengagement means are provided between the impeller and the device for counting the number of revolutions of said wheel. When the device for counting the number of revolution of the impeller comprises a helical spring, the disengaging means are constituted by a mechanical clutch device 137 connected to the push button 121 via a switch 138 provided between the heating column 113 and the electrical power source 105, and shaped to couple the coil spring 132 to the rotational shaft of the paddle wheel 129 when the push button is activated. Thus, by pressing the push button to deactivate the electric switch, the coil spring is no longer coupled to the impeller shaft, and the revolutions of the wheel resulting from the passage of the ambient gas. not impregnated through the heating column, are not taken into account by the volumetric counting means of the inhaled gas. When the counting device is a digital tachometer, it is set to count the number of revolutions of the paddle wheel only when the push button is activated. This embodiment is particularly advantageous in that it makes it possible to prevent the volumetric counting means of the inhaled gas from accounting for a volume of gas that is not impregnated with the liquid substance, a situation that may for example arise in the case where the The user would continue to suck in the electronic cigarette while the electric switch has been disabled by the user.

Referring now to Figure 4, illustrating a third embodiment of the inhalation device according to the invention. The third embodiment is identical to the first, except that the volumetric counting means of the inhaled gas are positioned inside a mouthpiece 207. The impeller 229 is engaged with a counting device of the number revolutions of said wheel of the type described in the first embodiment, which can be achieved either by elastic return means, for example a helical spring, or by a digital revolution counter. The device for counting the number of revolutions of said wheel is connected to the electric switch 233, via a contactor 235 positioned between the mouthpiece 207 and the heating column 213. This third embodiment is particularly but not limitatively adapted. for use of the electronic cigarette when the liquid substance to be inhaled is non-medicinal, in that the device for counting the number of revolutions of the impeller makes it possible to count the maximum but not absolute quantity of delivered liquid substance. According to a variant shown in FIG. 5, the electronic cigarette comprises a mechanical valve 337 positioned in the mouthpiece 307. The valve 337, shown in the closed position in FIG. 5, is connected to the digital counting device of the number of revolutions of the impeller and is arranged to at least partially block the passage of gas in the heating column or in the mouthpiece when the impeller has reached the predetermined number of revolutions, ie when the concentration of the vaporized liquid substance gas is reached. Such a valve can indifferently replace the electrical switch 133 or the assembly constituted by the electrical switch 233 and the contactor 235, or be used in addition, and applies to the three embodiments described above. The valve 337 is connected to the spring 332 and is shaped to let the impregnated gas or not the vaporized liquid substance as the impeller 329 has not reached the predetermined number of revolutions and the spring 332 is not totally compressed. When the spring 332 is fully compressed, the valve moves from its open position, permitting passage of the gas, to its closed position, blocking the flow of gas in the mouthpiece 307. By providing for positioning in the mouthpiece the impeller 329 and the valve 337, connected to the counting device of the number of revolutions of the wheel constituted either by the spring 332 or by the digital meter, the mouthpiece according to the invention can be mounted on a known cartridge of state of the art, which advantageously allows to significantly reduce the cost of the inhalation device. According to a fourth embodiment shown in FIG. 6, the volumetric metering means of the inhaled gas consist of a device for managing the electric power delivered by the electric power supply source, adapted to authorize the power supply. the atomizing device electric when the electric power per unit of time is less than a predetermined value and to block said power supply when the power delivered per unit of time reaches said predetermined value. For this, the device for managing the electrical power delivered by the power supply source comprises an acquisition box 439 of the voltage of the battery 406 of the power supply source 405 and the amperage of the heating resistor 425. of the atomization device 419. Such an acquisition box 439 is positioned in the power supply source 405, for example between the pushbutton 421 and the contactor 423. Alternatively, the electronic acquisition unit can be positioned in the heating column, between the contactor 423 and the heating resistor 425. The device for managing the electric power delivered by the power supply source is further adapted to alternately switch the electric switch from its closed position to its open position when a certain electric power over a given period has been emitted by the electric battery. When a predetermined value of time has been reached, corresponding to a power delivered by the power source, it means that a predetermined quantity of liquid substance has been vaporized.

When a desired predetermined quantity of liquid substance has been delivered, the device for managing the electric power delivered by the power supply sends a signal to the switch 433, then controlling its passage from its closed position allowing the power supply from the atomizer device to its open position. With this variant, no paddle wheel connected to a device for counting the number of revolutions of the wheel is to be expected, which facilitates the method of manufacturing such an inhalation device. In addition, when the acquisition box is positioned in the power supply, the inhalation device may comprise a heating column known from the prior art. When the acquisition box is positioned in the heating column of the inhalation device, the power source can be made according to the prior art. Finally, according to a variant common to each of the embodiments, the inhalation device according to the invention may be equipped with a light or audible indicator set to trigger when the concentration of the vaporized gas has reached the predetermined value. . Thus, by virtue of the present invention, the quantity of vaporized liquid substance delivered is now known with great precision, either as a maximum value or as an absolute dosage. In addition, this amount is regulated and controlled. This makes it possible to make the use of the electronic cigarette effective as a means for administering a drug substance, in that the dosage of the drug substance is respected. Furthermore, when the liquid substance is non-drug, the device according to the invention allows a user to know his nicotine consumption, which allows him to know the equivalent in number of traditional cigarettes he smoked.

As is obvious, the invention is not limited to the embodiments of this inhalation device, described above only as illustrative examples, but it embraces all the variants involving the equivalents techniques of the means described and their combinations if they fall within the scope of the invention.

Claims (13)

REVENDICATIONS1. Device for the oral inhalation of a gas, such as an electronic cigarette, comprising: - a cartridge (103) comprising: o at least one reservoir (109) configured to contain a liquid substance (111), and o to at least one atomization device (119) of the liquid substance 10 adapted, during activation of actuating means, for vaporizing in the heating column at least a portion of the liquid substance contained in the reservoir, - at least one electrical power source (105) supplying the atomization device of the liquid substance with electric current, said device being characterized in that it comprises volumetric metering means inhaled gas adapted to alternatively allow the vaporization of the liquid substance (111) when the concentration of the substantially vaporized gas is less than a predetermined value, and to prohibit said vaporization when the Oncentration of the vaporized liquid substance gas reaches said predetermined value. 2. Inhalation device according to claim 1, characterized in that the volumetric counting means of the inhaled gas comprise at least one impeller (129) connected to a counting device of the number of revolutions of said wheel, said device meter being connected to an electrical switch (133) arranged to block the flow of current between the power source (105) and the atomizer device (119) of the liquid substance when a predetermined number of revolutions of said wheel (129) is reached. 30 3. Inhalation device according to claim 2, characterized in that the device for counting the number of revolutions of the impeller (129) comprises elastic return means mounted on a rotation shaft of said wheel. 35 4. Inhalation device according to claim 3, characterized in that the elastic return means comprise a coil spring (132). Inhalation device according to claim 2, characterized in that the device for counting the number of revolutions of the impeller comprises at least one digital revolution counter. 6. inhalation device according to one of claims 2 to 5, characterized in that it comprises means for resetting the counting device of the number of revolutions of the wheel, arranged to move the switch (133) since an open position in which it blocks the flow of current between the power source (105) and the atomizer device (119) of the liquid substance (111) to a closed position in which it allows said current flow . 15 Inhalation device according to any one of claims 2 to 6, characterized in that the impeller (129) and the device for counting the number of revolutions of said impeller are preferably positioned inside. the heating column (113) of the cartridge. 20 8. Inhalation device according to any one of claims 1 to 7, characterized in that it comprises means for disabling the volumetric counting means of the inhaled gas when the atomization device of the liquid substance is inactive. 25 9. Inhalation device according to claim 8 combined with any one of claims 2 to 7, characterized in that the means for deactivating the volumetric metering means of the inhaled gas when the atomization device (119) of the substance liquid is inactive comprise disengaging means (137) between the impeller and the counting device of the number of revolutions of said wheel (129), shaped to pass from a disengaged position to an engaged position during the activation of the means for actuating the atomizing device. 35 10. Inhalation device according to any one of claims 1 to 7, comprising a mouthpiece (207) integral with the cartridge, characterized in that the volumetric counting means of the inhaled gas are positioned inside said nozzle. 11. Inhalation device according to any one of claims 1 to 10, characterized in that it further comprises at least one mechanical valve arranged to block at least partially the passage of the gas in the heating column (113) or in the mouthpiece when the concentration of vaporized liquid substance gas reaches the predetermined value. 12. Inhalation device according to claim 1, characterized in that the volumetric counting means of the inhaled gas is constituted by a device for managing the electrical power delivered by the power supply source, adapted to allow the supply of electricity. electrical power of the atomizing device when the electric power per unit of time is less than a predetermined value and for blocking said power supply when the power delivered per unit of time reaches said predetermined value. 13. Inhalation device according to claim 12, characterized in that the device for managing the electric power delivered by the power supply source further comprises an acquisition box (439) of the electrical power delivered by the source. power supply positioned in said power supply.