SI25565A2 - A portable device for the administration of a gas mixture in the cardiopulmonary resuscitation of a patient - Google Patents

Abstract

A portable fan or device (10) for the administration of a mixture of oxygen, argon and, optionally, other gases to patients who have suffered cardiac arrest, comprising: at least one cylinder (12) containing a mixture of oxygen, argon and any other gases; a valve (13) which is connected to a cylinder (12) which is suitable to act as a first pressure reducing means of the gas mixture exiting directly from the cylinder (12), a control unit (14) formed from the PLC, in which the programs and algorithms that control the operation of the device are stored (10); and a second pressure reducing means and a control system (16), both of which control PLC, a mixture of gases provided by the cylinder (12) and coming from the first pressure reducing means (13); the device (10) being suitable for delivery to a patient via a mask (17) which can be stored in the device compartment (18), a mixture of gases at reduced pressure supplied by the second pressure reducing means and the control system (16); and wherein the device (10) is designed to act in three different operating modes or options depending on the type of user in order to administer a gas mixture to a patient in need, in a simple, continuous mode and advanced mode mode.

Description

TRANSMISSION GAS SETTING MACHINE IN THE CARDIOPULMONAL PACIENT RENEWAL

Field of the Invention

The present patent application relates to the field of medical devices that can be used in cardiopulmonary resuscitation to prevent cardiac and brain lesions in a patient who causes ischemia and / or has stopped or reduced blood flow to the brain after a heart failure, and in particular, which is portable so that it can be instantly and easily used, where necessary, for the patient to be placed on the respiratory mask affixed to his or her face, a specific gas mixture comprising oxygen and argon or oxygen and argon and other gases.

State of the art

Cardiopulmonary resuscitation, abbreviated as KPO, is an urgent procedure, in which combination of chest compression and artificial respiration of the lungs is used to maintain an intact function of the brain and heart by performing manual and mechanical procedures until other restoration measures are performed spontaneous and normal circulation of blood in a person who has suffered brain ischaemia usually after heart failure.

Cardiopulmonary resuscitation or KPO is particularly recommended for those who have been reactive after a cardiac arrest and consequent ischemia and do not breathe at all or do not breathe normally.

As part of the urgent procedure carried out with cardiopulmonary resuscitation, known and used devices, also known as KPO devices or simply fans, are used to supply a mixture of gases typically containing oxygen into the lungs of the patient who has suffered ischaemia , to obtain oxygen or to maintain its or its brain function and at the same time to promote cardiopulmonary resuscitation as soon as possible in combination with manual or mechanical compression. In particular, a mixture of oxygen-containing gases is fed into the lungs of the patient through a special breathing mask that the device operator installs on the face, or through intubation into the trachea.

A mixture of oxygen-containing gases should be administered to the patient as quickly as possible after the occurrence of ischemia after cardiac arrest and, therefore, stopped blood flow to the brain.

Devices must be such that in unexpected and urgent situations in which they are usually used, they can also be managed by people without special preparation and training.

On the other hand, cardiopulmonary resuscitation devices or KPO-fans should be such as to enable trained people and, in particular, medical staff, to selectively intervene and with different approaches, in particular depending on the patient's circumstances and lesions.

It is also clear that the immediate availability of the KPO-fan at the time of the clinical event is essential, and the right mixture to be given to the patient is also decisive.

Cardiac arrest means a dramatic clinical event that can occur suddenly and often without warning signs.

This clinical event is characterized by a sudden loss of consciousness caused by a lack of blood flow to the brain, which occurs when the heart stops drawing blood into the brain.

According to various sources, cardiac arrest is one of the main causes of death in the Western world, and it falls annually between 350,000 and 700,000 people in the US, Canada and Europe.

Argon was first used in thirty years deep-sea divers.

Later, they found that argon has a narcotic effect in hyperbaric conditions and that it has fuzzy anesthetic properties in normobaric conditions.

Based on these effects, argon was mainly used as an inert gas in many industrial applications and in medical devices.

In addition, the neuroprotective and cardiac-protective effects of argon were described in a number of documents. In medical literature, there are reports of tests showing that argon together with other noble gases with small anesthetic properties, such as helium and neon, has a cardiovascular effect when used as a rabbit pre-treatment agent that has been 30 minutes exposed to occlusion of the left anterior coronary artery leading downward.

They also found that the usefulness of argon / oxygen or argon / oxygen and other gases is greater if the gas mixture is delivered to the patient as quickly as possible. Although describing the use and administration of argon as a preventive pre-treatment for myocardial protection, the prior art documents do not describe clearly the use and administration of argon for therapeutic purposes or as therapeutic treatment.

According to the applicant's knowledge to date, there is not yet a device or fan for use in cardiopulmonary resuscitation or KPO, which would be specifically dedicated and designed for the administration of mixtures composed of argon and oxygen or argon, oxygen and other gases in order to prevent cardiac and brain a lesion in a patient who has suffered from ischemia after heart failure and which is also simple, portable and effective as required in emergency situations in which a cardiopulmonary resuscitation device is commonly used. The KPO fan, which is the subject of this patent application, meets the abovementioned needs, in addition it has even smaller dimensions and is portable and can be advantageously incorporated in medical first aid equipment and in particular installed near the defibrillator.

To supplement the information, we further emphasize that the applicant has lodged the European Patent Application (EP 16183930.3) on the scope and utilization of the properties and effects of argon in the biological and medical field, which describes a particular mixture of gases primarily containing oxygen and argon, and optionally another gase which is assured to be administered to the patient as part of the cardiopulmonary resuscitation of the CPI and simultaneously with it in order to avoid brain and cardiac damage caused by ischemia in the same patient and / or stopped or reduced flow of blood into his or her brain after heart failure.

Summary of the Invention

The primary objective of the present invention is therefore to propose and make a new, useful and practical device or a cardiopulmonary resuscitation device that removes the disadvantages of the prior art and, in particular, makes it possible to prioritize the administration and administration of a mixture of oxygen and argon gas as part of urgent cardiopulmonary resuscitation and at the same time, combining chest compression with artificial ventilation to prevent cardiac and brain lesions in a patient suffering from ischemic heart failure.

The second object of this invention, which is in any case related to the previous object, is also the implementation of a novel device which can provide a mixture comprising oxygen and argon, in conjunction with an urgent cardiopulmonary resuscitation process, wherein the property of the device is that it is portable, so as to enable, if necessary, an immediate and simple use for the administration of a gas mixture to a patient in ischemic condition after cardiac arrest.

A further object of the present invention is the implementation of a novel device that can be used in the field of cardiopulmonary resuscitation interventions which provides suitable capabilities suitable for the type and skill of the operator, which it then uses in practice for the administration of oxygen and argon to a patient suffered from ischemia, especially for an untrained operator, a trained operator and a doctor.

The above-mentioned objectives are fully achieved by a device or a fan for the administration of a gas mixture in the cardiopulmonary resuscitation of a patient having the characteristics disclosed in the main independent claim 1.

Preferably, the fan according to the invention is designed to be used by untrained persons so that anyone can give the patient a mixture of oxygen and argon gas within the first minutes after a clinical event, that is, immediately after the patient has suffered ischemia due to cardiac arrest .

As shown below, the fan has been especially developed and designed to be used safely: people with no training or specific training; qualified persons who, for example, arrive at the scene of a clinical event with a rescue vehicle, such as volunteers working as ancillary medical personnel; and specialized staff, t. j. doctors.

As we have already pointed out, the location where the fan according to this invention is installed and available to use when needed is as important as possible and must be as close as possible to the site of the clinical event.

A preferred solution, for example, is the installation of a fan close to the defibrillator, assuming that this situation is where there are usually a lot of staff responsible for treating a patient who has suffered a heart failure and should therefore be revived.

It is clear that the ventilator must also be available in ambulances, in a hospital, in health centers and in clinics, but also designed to obtain approval for transport on board a vessel or aircraft and in general emergency vehicles.

Short description of images

These and other objects, features and advantages of the present invention will be explained more precisely and will be more apparent from the following description of one of its preferred embodiments on the basis of a mere non-limiting case, with reference to the accompanying drawings which show:

Fig. 1 is a three-dimensional graphical view of the device or fan according to the invention for the administration of a mixture of oxygen and argon and other gases to the patient to be revived;

Fig. 2 is a functional block diagram of the device of FIG. 1 according to the invention for the administration of a gas mixture containing oxygen and argon to a patient during his or her cardiopulmonary resuscitation; in

Fig. 3 is a working block diagram showing the use and operation of the apparatus of Figures 1 and 2 for the administration of a mixture of gases during cardiopulmonary resuscitation of a patient.

A preferred embodiment of the device or fan according to the invention

As has been expected, the subject of the present invention is a novel, useful and useful device or a fan intended for use in cardiopulmonary resuscitation, also called the abbreviation KPO, which is able to overflow and pass into the lungs of a patient during its revitalization of a mixture of gases and for this reason, also called the KPO fan.

According to the first basic feature of the present invention, a mixture of gases which is administered by the apparatus or KPO-fan to the patient during revitalization comprises in particular oxygen and argon or oxygen and argon and other gases to prevent cardiac and brain lesions in the patient inducing ischemia and / or reperfusion after cardiac arrest.

More particularly, the present invention is based on the finding that the administration of argon through the respiration with the co-administration of the techniques and procedures of cardiopulmonary resuscitation to a person suffering a cardiac arrest effectively protects both myocardial cells and the neuronal cells from lesions leading to ischemia and / or reperfusion after cardiac arrest .

Therefore, on the basis of what is proposed by the invention, the administration of argon with simultaneous and simultaneous standard manual operations and maneuvers carried out by cardiopulmonary resuscitation provides favorable improvements and more effective protection of the heart together with an improved and more effective non-porous compared to the administration of argon only after cardiopulmonary resuscitation.

According to a further preferred features of the invention, the device or KPO-fan has the characteristic that it is portable and easy to use, and allows the immediate and easy administration of an argon-containing gas mixture to a patient at the time of the clinical event or when the patient is exposed to ischemia after a heart failure.

As is known, cardiopulmonary resuscitation comprises typical manual or mechanical distress of the chest in conjunction with breathing out, or by blowing and placing air into the lungs of the patient, or only covering the thighs of the chest.

Preferably, the KPO fan of the present invention is also intended to be used during these resuscitation operations, i.e. during the compression and spread of the patient's chest, as schematically illustrated by the double arrow KPO of FIG. 2.

Similarly, as is known from the state of the art, the gas mixture can be used and passed passively, the gas flow is fed through the tube into the respiratory system of the patient to be revived.

There are examples of this use when the gas flow is passed through the nasal tube or mask, directly into the supraglotic device or into the endotracheal tube, or by inhalation of the respiratory gas and by oscillating spraying.

In summary, in the context shown above, the object of the device or fan according to the invention is to provide for forced breathing of an argon-containing gaseous gas mixture to a patient during cardiopulmonary resuscitation at the site of the clinical event until the patient arrives in the emergency hospital block.

Consequently, the KPO-fan can also be used to protect and reactivate the patient's circulatory circulation both initially during the exercise of maneuvers during cardiopulmonary resuscitation, and subsequently as well as in the patient's arrival at a hospital facility equipped with first-aid and intensive care aids.

As has already been pointed out, the KPO-fan is especially designed for administering to a patient having ischemia, oxygen and argon or oxygen, argon and other inert gas mixtures, wherein the concentration of argon is when the mixture is made only from argon and oxygen , preferably between 20 and 80 vol. %.

In addition, the gas mixture, as we have already said, may also contain other gases such as helium, krypton, neon, xenon, nitrogen, hydrogen, in which case the preferred concentration of argon is above 10%. The short-term patent KPO fan is equipped with a battery, which ensures the patient's breathing time to be revived with a mixture of gases between 30 minutes and 2 hours, preferably between 30 and 60 minutes.

Where electrical outlets are available (for example, in ambulances), the fan may also be charged or used continuously by means of an electrical supply. In particular, as will be detailed below, this fan is developed and implemented starting with a storage system in which the gas-containing gas containing argon is stored continuing along the pneumatic circuit until it supplies the interface with the patient, this the interface can be a nose or facial mask, or a connector that can be connected with an appropriate connector that is connected to the endotracheal tube. The KPO fan is also equipped with a system for limiting pressure in the respiratory system to prevent injuries in the lungs of the patient due to overpressure; with a lung pressure indicator and a series of analog and digital indicators indicating the proper functioning of the KPO-fan, which corresponds to the regular rhythm of patient breathing during cardiopulmonary resuscitation.

In addition, the advantage of the KPO fan according to the invention is also that it is mobile to be powered by batteries so that it can also be charged externally by connection to the electrical system and can be connected to the defibrillation module via an interface.

As will be described below, the device according to the invention has been developed and designed to be able to use it safely using different and separate working regimes, in particular: persons without training or special instructions in accordance with a mode of operation called "simple option «; qualified persons who, for example, arrive with a rescue vehicle at the site of a clinical event where the patient has suffered a heart failure, or volunteers as auxiliary medical personnel in accordance with the operating mode of the device called the "advanced option"; medical staff in accordance with the operating mode, called the "advanced option".

Taking into account these possible different operating modes of the device, a qualified physician may choose the patient's breathing sequence, for example using a USB stick, but if the device is used by non-medical personnel, the breathing sequence is completely automatic.

As was expected and shown in FIG. 1, the KPO fan according to the invention is lightweight and features small dimensions so that it has the transfer properties. In particular, the KPO fan is designed in such a way that it has dimensions and weight that are suitable for the operator to handle it appropriately and easily on the shoulders. Referring to FIG. 1, for example, are characteristic dimensions of a non-cylinder KPO fan or additional oxygen-containing cylinders that are provided for specific uses as described below, corresponding to the "advanced option" reserved for doctors: LI = 400 ± 100 mm; L2 = 600 ± 150 mm; L3 = 250 ± 150 mm.

The characteristic weight is typically less than 5 kg.

Of course, the above dimensions and weight are not binding, but they can change depending on the potential applications for which the KPO fan is intended. Referring to FIG. 1 and the associated working block diagram of FIG. 2, in more detail, the apparatus or portable fan of the present invention is labeled 10 throughout the text and comprises: a tubular support frame 11 carrying different parts of the device or fan 10; at least one cylinder marked with 12 containing a mixture of M gases comprising oxygen and argon (OR + A) intended for administration to patient P during its revitalization; a valve 13 connected to a cylinder 12 normally arranged in a closed position to prevent the formation of a mixture of M gases from the cylinder 12, wherein this valve 13 is suitable to act as the first pressure reducing means of the mixture of the M gas when it is derived and is supplied directly to the cylinder 12; a control unit 14, which is more precisely formed from a PLC in which the programs and algorithms are stored to control and control the operation of the device 10; a second pressure reduction means and a control system, which is denoted everywhere at 16, a flow of the mixture of M gases delivered by the cylinder 12 and comes from the first pressure reducing means 13, the second pressure reduction means and the control system 16 being carried out in such a way to be controlled by the control unit 14; and the panel 15 with the settings and commands associated with the control unit 14, which allows the operator to set and control the flow of the gas mixture supplied by the device 10, this panel 15 with settings and commands comprising a display or display 15a which is suitable for displaying signals and information relating to the operation of the device 10 to the same operator.

Depending on the use in a variety of possible locations, the device 10 according to the invention is designed to be powered by a battery as shown in FIG. 2 is denoted by 21, wherein this battery 21 is dimensioned to ensure the operation of the device 10 and the flow of the mixture M of the gas for a time of 30 to 60 minutes, and is a type which can be recharged by being connected to a conventional power supply, for example, one that is already present in ambulances.

When using the device 10, the display or screen 15a included in the assembly and the control panel 15 generates a visual signal "DOES NOT WORK" if the battery 21 that supplies the device 10 is exhausted and therefore can not supply any energy.

More specifically, this "DOES NOT" message is generated automatically and appears on the screen 15a when there is no power in the battery 21, while in the case when the battery 21 of the device 10 is sufficiently full, the display 15a does not show any display and therefore is black whether in the second version the word "ACTIVE" or a word with similar meaning appears.

Further, the display 15a of the assembly and the control panel 15, as described hereinafter, is a function that, before starting the administration of a gas mixture to a patient to be revitalized or which is already being revived, it visually displays to the operator that everything in the device 10 works properly and provides ready for use.

The apparatus 10 is further connected to the breathing mask 17 which can be stored in a compartment 18 formed in the same device 10 so that the resuscitant is supplied with a mixture of M gases at a reduced pressure supplied by the second pressure reduction device and control system 16.

This compartment 18 which is formed in the device 10 is spacious enough to receive and store a breathing mask 17 required for the administration of a mixture of M gases to the patient supplied by the cylinder 12 and a hose marked with 19 which connects the breathing mask 17 to the gaseous flow control system 16 to the patient.

A cylinder 12 comprising a gas mixture comprising oxygen and argon is preferably of a composite material so that it has a lower weight, thereby contributing to the easier transport and portability of the device 10.

In general, this cylinder 12 may be made and coated with any material, provided that the material that comes into contact with the mixture of M gases contained in the cylinder 12 is compatible with it.

The pressure of the gas mixture within the cylinder 12 can reach up to 450 bar and preferably about 300 bar.

The capacity of the cylinder 12 containing the mixture of gases may be 0.5 to 3 liters of geometric volume and preferably is equal to 2 liters so that it contains up to 800 liters of gas mixture at a working pressure of 450 bar.

The valve 13 connected to the cylinder 12 can be made with a conventional valve or it can preferably be shaped and dimensioned so as to allow the flow of a predetermined speed and volume, and at a given final pressure of the mixture M of the gas exiting from the cylinder 12, so it acts as a pressure reduction device.

Preferably, the pressure of the mixture M of the gases of the valve 13, i.e. the exit from the cylinder 12, is between 1 and 10 bar.

As already defined, the gas mixture contained in the cylinder 12 has at least 20% oxygen.

This gas mixture is preferably enriched with oxygen, for example, in the case of the use of an "advanced option", for example, it can reach a concentration of 50% oxygen or more, the remainder being argon gas.

The same procedures that are taken for the production of mixtures enriched in a different way with oxygen can also be used for mixtures consisting of other gases.

Mixtures of gases to be administered to patients can only contain argon and oxygen or, as has been more precisely defined, the mixtures contain argon, oxygen, nitrogen, hydrogen, xenon, helium, krypton, neon at different concentrations, provided that the operation of the fan 10 does not depend on the specific composition of the gas mixture that is given to the patient being revived. If the device or fan 10, as will be described in more detail below, is set to operate on a "simple option" or "advanced option", then the oxygen concentration given to the patient can not be altered and is equal to the oxygen concentration in the mixture gases contained in the cylinder 12. In the case of an "advanced option" for doctors, however, the oxygen concentration may be suitably modified by the same medical personnel.

When the device 10 flows a mixture of M gas exiting from the cylinder 12, even if the pressure has been reduced by means of the valve 13 in the open position, it enters the zone or part of the device 10, where the pressure and speed of this flow are even more precisely controlled.

This part of the device 10 comprises in particular a series of devices that allow precise and efficient flow control of the mixture of M gases depending on the characteristics of the patient P responder during revitalization. In this part of the device 10, a control unit 14, i.e., a PLC controlling the operation of the same device 10 is also installed.

The remaining portion of the device 10, free and not occupied by the cylinder 12, the control unit 14 and the second pressure reducing device, and the flow control system 16 of the M mixture, is used to determine and form a compartment 18 in which the breathing mask 17 and a flexible tube 19 connecting it with a second pressure reducing means and a control system 16.

The respiratory mask 17, which is connected to the device or fan 10 and is stored therein, usually corresponds to a "basic model", which makes it easy for the operator to use, and in particular there is no need for an application to fit fully on the face of the patient.

In this way, that is, by providing a breathable mask 17 of a conventional type and standard, which is therefore simply usable without requiring specific skills, it is prevented that untrained persons, especially when the fan 10 is implemented, works and is used according to the "simple option", cause pneumatic damage to the internal organs of the patient.

Therefore, the differences in characteristics and in the embodiments of the fan 10 of the invention, when performed to act on the basis of a "simple option", compared to that when it is ensured that it operates on the basis of the "advanced option" refers to the type of mask, which can be used by the operator of the same fan 10.

The breathing mask provided in the case of using the fan 10 in accordance with the "follow-on option" can be particularly stored in the appropriate special compartment formed in the fan 10 and equipped with a visible warning on the same fan 10, such as "IT IS MASK APPLY TO A HEALTH STAFF ONLY "or similar warnings.

Instead, the breathing mask used in the "simple option" is already associated with the respective flexible hose, which connects it with the second pressure reduction device and with the control system 16 of the fan 10. Referring to the drawings and, in particular, to the work block diagram of FIG. 3, a description will now be provided concerning the use and operation of the device 10 of the invention for the administration of a mixture of M gases containing oxygen and argon (OR + A) to a patient in a state of brain ischemia during his or her cardiopulmonary resuscitation.

In order for the respective operator to be easily and immediately using the device or fan 10, the various operations to be performed for its proper functioning and rapid application to a patient in the state of brain ischemia are briefly described and shown with symbols on the panel 20, which is part of the same device 10, shown in FIG. 1.

More specifically, the operations to be carried out by the operator when the patient has suffered brain ischaemia, which typically follows a heart failure, and must therefore, as shown by blocks 31, 32 and 33 in FIG. 3, the operator uses a device or fan 10 from a short-term patent, the following: opening a valve 13 connected to the cylinder 12 so that the release of the mixture M of the gases from the same cylinder 12 is enabled; the installation of the command button 15b, shown in FIG. 1 and is included in the panel 15 with the fan settings and commands 10 in the standby position; controlling the signal on the display 15a of the panel 15 with the settings and commands indicating that the fan 10 works properly; selecting by means of the panel 15 with the settings and commands of the height of the patient P to be revived and the pressure of the corresponding image shown on the same panel 15; mounting the respiration mask 17 to the face of the patient P, which is alive; and moving the command button 15b from the standby position to the position of the fan command 10.

As already mentioned, the exact sequence of operations, as described above, to be performed, is conveniently indicated on the same device 10 and can also lead to a recorded voice.

In general, the purpose of these operations corresponding to block 34 in FIG. 3, a suitable setting of the fan 10 until activated to give a mixture of M gases to a patient in a state of cerebral ischaemia and which should be rapidly revived.

It is defined that the valve 13 connected to the cylinder 12 is preferably of a special type which is not adjustable so that it can only be moved from the initial closed position only to the open position in which the valve 13 is fully open and once it is operable fan 10 is placed in an open position, it can no longer be returned to the closed position.

Therefore, in this way, the irregular operation of the valve 13 in the stress moments in which the ventilator 10 is activated and used by the patient is avoided. By selecting the patient height P, it is automatically regulated and the flow of this mixture of M gases is determined based on the algorithms and programs stored in the PLC control unit 14. At this point, the preparatory phase is completed, the device 10, as shown in block 36 in FIG. 3 is activated to operate in accordance with the specific mode of operation according to the type and skill of each operator so that patient P is simultaneously with cardiopulmonary resuscitation, which is symbolized by the double arrow KPO in FIG. 2 provides a mixture of M gases containing oxygen and argon to prevent brain and neurological damage in patient P. If, therefore, the device 10 is activated to act in accordance with a mode of operation corresponding to a "simple option", it will act in such a way that, to provide a mixture of M gases on the basis of a program stored in the control unit 14, which in fact corresponds to this "simple option" as shown by blocks 37 and 37-1 in FIG. 3. If, however, the device 10 is activated to operate according to the operating mode corresponding to the "extended option", it will operate by providing a mixture of M gases on the basis of the program stored in the control unit 14, which corresponds to this "extended option &Quot; as shown by blocks 38 and 38-1 of FIG. 3.

Finally, if the device 10 is activated to operate according to the operating mode corresponding to the "advanced option", it will operate in such a way that it will supply a mixture of M gases on the basis of the program stored in the control unit 14, which corresponds to this "advanced option &Quot; as shown by blocks 39 and 39-1 of FIG. 3.

As already shown, the underlying difference between the so-called 'simple option' option and the so-called 'advanced option' option is reflected in the difference in the type of mask that can be used either by unsuccessful staff and corresponds to a 'simple option' or qualified personnel and corresponds to a "follow-on option" for administering a mixture of M gases containing oxygen and argon to a patient P.

In addition, there are other important differences that distinguish the so-called "advanced option" option that is performed and reserved for doctors from the other two options of "simple option" and "advanced option" that are implemented for untrained persons or. trained advanced person.

Physicians and other persons and professionals who have been trained and who are legally responsible for using the fan 10 shall in particular have access to a further device which is different from the device or fan 10, which may, if necessary, connect to the latter.

These further devices or an additional part of the fan 10 in particular consist of: a cylinder containing oxygen or a cylinder containing a mixture of gas enriched with oxygen; and a special program key in which the control program of this downstream device or an additional part relative to the fan 10 is stored.

This additional and special part is not performed to monitor the fan 10, but usually carried by doctors or qualified persons who come to the place of a clinical event, for example, with a rescue vehicle, to assist and revive the patient.

Similarly to the cylinder 12, which is already included in the device 10 and is its integral object, this additional cylinder containing an enriched oxygen mixture is also made of composite material to have the smallest weight.

The operating pressure in this additional cylinder can reach up to 450 bar, but preferably about 300 bar.

In use, the additional cylinder can be connected in a very simple way to the device or fan 10 and is fitted with the respective pressure relief valve designed to operate in the same way as a valve 13 connected to a cylinder 12 containing a mixture of M gases with argon, which is an integral and essential part of the fan 10, such that this pressure relief valve is designed to be installed only in two positions, "open" or "closed", and once opened it can no longer be shut off.

Through the program key, the doctor has access to a plurality of different functions controlled by PLC control units 14 of the fan 10, and for example, using them, for example, changes the oxygen concentration in the mixture M to the patient P, the leakage pressure and the administration of the same mixture M , the speed of its flow and the associated administration times.

Let's re-emphasize, access to the PLC allows the physician to conveniently use the fan 10 between the chest massage performed by cardiopulmonary resuscitation to blow air out of the lungs and during a later stage when it again inhales air.

An application or software that provides the doctor with access to PLC resources of the control unit 14 can be loaded on a tablet computer.

Once the tablet is connected to the fan 10 via USB or

Bluetooth, your doctor can provide PLC commands using the touch screen of the same tablet PC, where fan parameters 10 can also be displayed.

It is therefore clear from the given description that the objectives of the present invention are fully achieved, and the invention is in particular proposed a novel and useful device or fan for the administration of a gas mixture, which in particular contains argon, in association with and simultaneously with the cardiopulmonary resuscitation of the patient, who has suffered a heart failure in order to prevent cardiac and brain lesions in the same patient caused by ischemia and / or stopped or reduced blood flow to the brain due to this cardiac arrest.

In addition, the device, which is its great advantage, has the characteristics of being portable, allowing, if necessary, a simple and immediate use during the cardiopulmonary resuscitation of a patient who has suffered ischemia after a heart failure.

Variations

It is clear that, without prejudice to the principle and basic technical design of the invention, a device or fan for the administration of a mixture of gases in cardiopulmonary resuscitation, in order to prevent cardiac and brain lesions in a patient caused by ischemia or stopped or reduced blood flow between the cardiovascular delays, highlight variations, changes and improvements according to what has been described and shown so far, without circumventing the essence of this patent with a shortened duration.

Based on the first version, for example, a fan may have a built-in CO2 detector that can be useful in preventing hypoxigenation of the patient during the recovery phase.

As already shown, the gas mixture that is given to the patient can contain other gases as well as oxygen and argon, and in particular helium. In this case, the gas mixture may consist of at least 21% oxygen, preferably more than 10% argon, and helium, with a balancing function, so as to obtain a lightweight mixture that is easy to inhale and can therefore facilitate breathing in certain patients.

It is clear that in this case, the appropriate nature for the incorporation of helium into the composition of the gas mixture is determined by the low molecular weight of this gas, which means that the mixture of gases given to the patient is easy to inhale. The KPO fan may also be designed to easily carry out tests for the approval of an airplane or helicopter transport.

After all, as it has already been shown, the design and design of the fan can be such as to allow its transport, as if it were a backpack or as a handbag.

Claims (15)

PATENT CLAIMS A portable device for administering a mixture of gases in a cardiopulmonary resuscitation of a patient, wherein the device or fan (10) for administering the mixture (M, (OR + A)) of the gases as part of the patient's cardiopulmonary resuscitation (KPO) or, at the same time, comprises: a support frame (11) for supporting various parts of the device (10); at least one cylinder (12) containing a mixture of (M) gases comprising oxygen and argon (OR + A) intended for administration to a patient (P) when it is or is revived; a valve (13) which is connected to a cylinder (12) normally arranged in a closed position to prevent the release of the gas mixture from the same cylinder (12), wherein the valve (13) is suitable to act as a first reducing means the pressure of the gas mixture, when the valve (13) is open and therefore the mixture (M) of the gas exits from the cylinder (12) and is supplied by the same cylinder; a control unit (14) which is more precisely formed from a PLC, in which programs and algorithms are stored for controlling and controlling the operation of the device (10); a second pressure reduction means and a control system (16) which both control the control unit (14), the flow of the mixture (M) of the gas supplied by the cylinder (12) and comes from the first pressure reducing means (13); a panel (15) with settings and commands including a display or display (15a) allowing the operator to set and control the device (10); and a battery (21) for supplying energy necessary for the operation of the device or fan (10); the device (10) being connected to a mask (17) or a breathing mask or a similar device by means of which the mixture (M, (OR + A)) of the gases can be brought to a revived patient (P) at a reduced pressure, which is supplied by a second pressure reducing means and a control system (16) which is included in the same device (10). An apparatus or fan (10) according to claim 1, wherein the device or fan (10) is designed to operate in different modes or operating options (37, 38, 39) depending on the characteristics, skills and type of personnel that is is provided for use by the same device or fan (10) to give a mixture (M, (OR + A)) of the gases to a patient (P), wherein the various operating options or regimes include: the first option (37) also referred to as " a simple option "in which the device (10) is implemented to be used by untrained or non-specialized personnel without the risk of causing injury to the patient, in which in the first option (37) the control unit (14, PLC) controls (37-1) the operation of the device (10) based on a predetermined and specific program corresponding to the first option to generate the correct flow of the mixture (M) of the gases at the appropriate pressure, so as to prevent pneumatic damage to the patient, even in the case of a trap blocker; second option (38), also referred to as the "advanced option" in which the device (10) is implemented, is used by trained personnel, in which the control unit (14, PLC) controls (38-1) in the second option (38) operation of the device (10) based on a predetermined and specific program corresponding to the second option to generate the correct flow of gas at the appropriate pressure given to the patient by means of a professional mask; and a third option (39) also called the "advanced option" in which the device (10) is performed is administered by medical personnel, and in the third option (39) medical personnel are able to access, for example, in Bluetooth mode or via the USB port, to the sources and programs stored in the control unit (14) and to the PLC to select and adjust the flow of the mixture (M) of the gases for administration to the patient (P) and the respective pressure, as well as the oxygen concentration in the same mixture (M) gas, when a further additional oxygen-containing cylinder is connected to the same device (10). An apparatus or fan (10) according to claim 1 or 2, wherein the valve (13) connected to the cylinder (12) can be placed from a closed position in which it is configured to prevent the release of the mixture (M) of the gases from the cylinder (12) to a specific open position, and therefore is not exposed to the settings by the operator of the device to allow the free movement of the mixture (M) of the gases with the cylinder (12), and wherein the valve (13) once in the open position, it is no longer possible to close it in a closed position, so as to avoid mistakes in handling the operator while using the device (10). An apparatus or fan (10) according to any one of claims 1 to 3, comprising a compartment (18) that is spacious enough to receive and store the breathing mask (17) required for the administration of the mixture (M, (17) with the second pressure reducing agent and with the flow control system (16) of the mixture (M), and the tube (19) the gases being administered to the patient (P) with the device (10). An apparatus or fan (10) according to any one of the preceding claims, wherein at least one cylinder (12) has a volume of 0.5 to 3 liters, preferably 2 liters, and is dimensioned such that it can operate at up to 450 bar and contains up to 800 liters of gas mixture (M) under pressure. The device or fan (10) according to any one of the preceding claims, wherein the control panel (15) and the commands allow the operator of the device to adjust the flow of the mixture (M) of the gas contained in the cylinder (12) for administration to the patient (P) based on the height of the same patient (P). An apparatus or fan (10) according to any one of the preceding claims, further comprising accessible, more specifically Bluetooth or UBS mode, to connect the same device (10) to an external communication device, for example a tablet computer, to allow the sending of commands to a control a unit (14) and a respective PLC, in order to change the setting parameters of the device (10). An apparatus or fan (10) according to any one of the preceding claims, wherein the battery (21) is dimensioned to allow the device (10) to operate for at least 30-60 minutes, and can be refilled by plugging to a conventional power supply for batteries, in particular the power supply already present in ambulances and generating energy as soon as it is charged; and wherein the display (15a) included in the panel (15) with the settings and commands is designed to show when the device (10) is not in use and does not work, for example due to the discharged battery (21), the corresponding message at example "DOES NOT WORK". Device or fan (10) according to any of the preceding claims, further comprising: an attachment for an additional cylinder of a composite material containing a mixture of gas enriched with oxygen in which oxygen is present at a concentration of greater than 21%. A device or fan (10) according to any one of the preceding claims, wherein the valve (13) connected to the cylinder (12) acting as the first pressure reducing means, can reduce the pressure in the mixture (M) of the gases from the higher of the pressure present in the same cylinder (12) to a reduced pressure at the exit from the latter, so as to allow the mixture (M, (OR + A)) of the gases to be properly supplied to the second pressure reducing means and the control system (16 ) flow of the mixture (M, (OR + A)) of the gases and, therefore, is given to the patient (P) during the resuscitation at the required pressure of the mixture (M) of the gases. An apparatus or fan (10) according to any one of the preceding claims, having the following characteristics: a weight below 5 kg; such a dimension and shape, the power can be easily carried by the device (10) on shoulders or by hand; a battery (21) which allows the device to operate (10) for up to 120 minutes; a connection to an electrical system that allows the battery to recharge (21) or the continuous operation of the device (10). An apparatus or fan (10) according to any of the preceding claims, wherein the cylinder (12) containing the mixture (M, (OR + A)) of the gases is administered to a patient (P) from a carbon steel or aluminum alloy, or of composite material with an inner lining of metal, aluminum or steel, or of a polymeric composite material. A device or fan (10) according to any one of the preceding claims, further comprising a device for connecting the device to an endotracheal tube. An apparatus or fan (10) according to any one of the preceding claims, further comprising an apparatus for detecting and measuring carbon dioxide (CO2) in the blood of a patient (P) to avoid hyperoxigenation. An apparatus or fan (10) according to any one of the preceding claims, wherein the device or fan (10) can supply a mixture (M) of gases contained in the cylinder (12), even in the case of a discharged battery (21) using an additional self-extinguishing device that allows manual ventilation of the patient to be revived.