BG3457U1 - Portable device for application of gas mixture in patient cardiopulmonary resuscitation - Google Patents

Abstract

The portable CPR ventilator device relates to the field of medical devices used in cardiopulmonary resuscitation, usually to prevent cardiac and brain lesions of the patient caused by ischemia and / or lack or reduced blood flow to the brain as a result of heart attack. It is a new, useful and practical portable CPR ventilator for cardiopulmonary resuscitation, which allows the use and application of a gas mixture containing oxygen and argon, in the context and in combination with emergency cardiopulmonary resuscitation, which combines compression of the chest with artificial ventilation. to prevent and avoid heart and brain lesions in a patient suffering from ischemia due to cardiac arrest. It has appropriate properties, depending on the type and skills of the operator who will use it in practice, in particular of an untrained operator, a trained operator and a doctor. The portable device for application of gas mixture (O + A) in cardiopulmonary resuscitation of a patient comprises: - tubular support frame (11) for supporting its parts; - at least one cylinder (12) containing a gas mixture (O + A), consisting of oxygen and argon, for administration to the patient in resuscitation; - a valve (13) for preventing the leakage of the gas mixture (O + A), connected to the bottle (12) and made as a first pressure reducer for filling the gas mixture (O + A) thereof; - a control unit (14) consisting of a programmable logic controller for managing and controlling the operation of the portable device (10); - a gas mixture (O + A)flow control system (16) supplied by the cylinder (12) comprising a second pressure reducer connected to the control unit (14); - an adjusting control panel (15) including a display (15a) for controlling the portable device (10) by an operator; and - battery (21) for powering the portable device (10). According to the utility model, the portable device (10) is connected to a breathing mask (17) for applying the gas mixture (O + A) with reduced pressure from the second reducer connected to the control system (16). Furthermore, the device (10) is configured to operate so as to deliver the gas mixture to the patient to be resuscitated, in three different options or modes of operation, depending on the type of use, respectively, easy, intermediate, and advanced version.

Description

3598 Descriptions to registration certificates of utility models № 02.2 / 28.02.2020 artificial ventilation to prevent and avoid heart and brain lesions of a patient suffering from ischemia due to cardiac arrest. It has appropriate characteristics, depending on the type and skills of the operator who will use it in practice, in particular of an untrained operator, a trained operator and a doctor. The portable device for application of gas mixture (0 + A) in cardiopulmonary resuscitation of a patient contains:

- tubular support frame (11) for supporting its parts;

- at least one bottle (12) containing a gas mixture (O + A), consisting of oxygen and argon, for administration to the patient in resuscitation;

- a valve (13) for preventing the leakage of the gas mixture (0 + A), connected to the cylinder (12) and made as a first pressure reducer for filling the gas mixture (0 + A) from it;

- a control unit (14) consisting of a programmable logic controller for controlling and controlling the operation of the portable device (10);

- a gas mixture flow control system (16) (0 + A) supplied by the cylinder (12) comprising a second pressure reducer connected to the control unit (14);

- an adjusting control panel (15) including a display (15a) for controlling the portable device (10) by an operator; and

- battery (21) for powering the portable device (10).

According to the utility model, the portable device (10) is connected to a breathing mask (17) for applying the gas mixture (0 + A) with reduced pressure from the second reducer connected to the control system (16).

The device (10) is configured to operate to deliver the gas mixture to the patient to be resuscitated in three different options or modes of operation, depending on the type of use, respectively, easy variant, intermediate variant and advanced version.

claims, 2 figures

3599 Descriptions for utility registration certificates № 02.2 / 28.02.2020 (54) PORTABLE DEVICE FOR GAS MIXTURE IN PATIENT CARDIOPULMONAL RESUSCITATION

Field of technology

The present utility model relates to the field of medicine, and in particular to medical devices used in cardiopulmonary resuscitation, usually in order to prevent cardiac and cerebral lesions of a patient caused by ischemia and / or lack or reduced blood flow to the brain as a result. of cardiac arrest. This device is portable, so it can be used immediately and easily, when necessary, to apply a special mixture of gases containing oxygen and argon, or oxygen and argon and other gases, by placing a breathing mask on the patient's face.

BACKGROUND OF THE INVENTION

Cardiopulmonary resuscitation, commonly referred to as CPR, is an emergency procedure that combines and combines mechanical chest pressure with artificial lung ventilation to maintain intact brain and heart function as a result of manual or mechanical surgery, until other measures are taken to restore spontaneous and normal blood circulation in a person who has been affected by a stroke, usually as a result of cardiac arrest.

In particular, cardiopulmonary resuscitation or CPR ventilation is recommended for those who, in the event of cardiac arrest and subsequent ischemia, do not respond and do not breathe, or show abnormal breathing.

As part of the emergency procedure provided by cardiopulmonary resuscitation, devices are also known and widely used, also called CPR ventilators, or simply ventilators adapted to administer a mixture of gas, usually containing oxygen, in the lungs of a patient suffering from ischemia, so to fill it with oxygen and preserve the functionality of the brain and at the same time, in combination with manual or mechanical pressure on the chest, to favor cardiopulmonary resuscitation for the shortest time.

In particular, the oxygen-containing gas mixture is delivered to the patient's lungs through a special breathing mask that is placed on the face or by intubation in the trachea by the operator of the device.

The oxygen-containing gas mixture should be administered to the patient as soon as possible after the onset of ischemia as a result of cardiac arrest, and consequently, a lack of blood flow to the brain.

In addition, it is necessary that the devices, in view of unforeseen and emergency situations in which they are normally used, be able to be used by personnel without specific training and practice.

On the other hand, devices for cardiopulmonary resuscitation, type CPR ventilators must have indicators that allow even inexperienced people and in particular medical staff to intervene in a selective manner and with different approaches, especially depending on the circumstances and injuries of patient.

It is also clear that the immediate presence of the CPR ventilator at the time of the clinical case is crucial, as is the use of the correct mixture to be administered to the patient.

Cardiac arrest is 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 cerebral blood flow, which occurs when the heart stops pumping blood to the brain.

As can be seen from various sources, cardiac arrest is one of the leading causes of death in the Western world, with between 350,000 and 700,000 people in the United States, Canada and Europe suffering from cardiac arrest each year. .

Argon was first used in the 1930s by divers.

3600 Descriptions to utility registration certificates № 02.2 / 28.02.2020

It was later found that argon has a narcotic effect in hyperbaric conditions and mild intoxicating properties under normobaric conditions.

Based on these effects, argon is mainly used as an inert gas with a shielding function in many industrial applications and in medical devices.

In addition, the neuroprotective and cardioprotective effects of argon have been described in numerous documents. In particular, the medical literature reports evidence that argon, together with other noble gases with low anesthetic properties, such as helium and neon, has a cardioprotective effect when used as a pre-treatment substance in rabbits subjected to 30-minute occlusion of left anterior descending coronary artery.

It has also been shown that the benefit of a mixture of argon / oxygen or argon / oxygen and other gases is higher if the gas mixture is administered as soon as possible to a patient in need of cardiopulmonary resuscitation.

However, prior art documents, insofar as they describe the use and application of argon as a preventive, pre-treatment for myocardial protection, do not clearly describe the use and application of argon for therapeutic purposes or as a therapeutic treatment.

In particular, today, as the Applicant was able to establish, there is no CPR ventilator on the market for use in cardiopulmonary resuscitation that is specially designed and intended to introduce a mixture composed of argon and oxygen, or of argon, oxygen. and other gases to prevent and avoid heart and brain lesions in a patient suffering from ischemia after cardiac arrest, and which also have characteristics such as structural simplicity, portability, efficacy as required by emergency circumstances in which cardiopulmonary resuscitation devices should normally be used.

Technical essence of the utility model

The main purpose of this utility model is to propose and implement a new, useful and practical portable CPR ventilator for cardiopulmonary resuscitation, which will eliminate the shortcomings of the known technique and in particular, to allow the use and application of a gas mixture containing oxygen and argon, in context and in combination with emergency cardiopulmonary resuscitation, which combines chest compression with artificial ventilation to prevent and avoid heart and brain lesions in a patient suffering from ischemia due to cardiac arrest.

Another object of the present utility model related to the above is to provide a new device to administer a mixture containing oxygen and argon in connection with an emergency cardiopulmonary resuscitation procedure and to be portable so as to allow, if necessary, immediate and easily used to introduce the gas mixture to a patient in a state of ischemia after cardiac arrest.

Yet another goal of the current utility model is to create a new device to be used in cardiopulmonary resuscitation that has appropriate characteristics, depending on the type and skills of the operator who will use it in the practice of introducing the mixture of oxygen and argon of the patient affected by ischemia, in particular of an untrained operator, a trained operator and a doctor.

The above objectives can be considered to be fully achieved by the portable CPR ventilator device for administering a mixture of gases in a patient's cardiopulmonary resuscitation.

The portable device for application of gas mixture (O + A) in cardiopulmonary resuscitation of a patient consists of:

- tubular support frame for supporting its parts;

- at least one bottle containing a gas mixture (O + A), consisting of oxygen and argon, for administration to the patient in resuscitation;

- a valve for preventing the leakage of the gas mixture (0 + A), connected to the cylinder and made as a first pressure reducer for filling the gas mixture (0 + A) from it;

- a control unit consisting of a programmable logic controller for controlling and controlling the operation of the portable device;

- gas mixture flow control system (0 + A) supplied by the cylinder containing the second

3601 Descriptions to certificates for registration of utility models № 02.2 / 28.02.2020 pressure reducer, control unit is connected;

a control panel including a display for operating the portable device by an operator, and

- battery to power the portable device.

The contribution of the utility model to the prior art is due to the fact that the portable device is connected is a breathing mask for applying the gas mixture (O + A) is reduced pressure by the second reducer connected to the control system.

In a preferred embodiment of the portable device for administering a gas mixture in cardiopulmonary resuscitation, according to the present utility model, the valve is non-adjustable and is provided with a mechanical means for placing in the closed position to prevent leakage of the gas mixture (O + A) from the bottle and in an irreversibly open position to ensure the free supply of the gas mixture (0 + A) therefrom.

In another embodiment of the portable device for administering a gas mixture in cardiopulmonary resuscitation, according to the utility model, it comprises a free compartment in which the breathing mask for supplying the gas mixture (0 + A) contained in the bottle and a flexible tube are placed. to connect the breathing mask is the second pressure reducer to the gas mixture flow control system (0 + A) supplied to the patient by the portable device.

In another embodiment of a portable device for administering a gas mixture in cardiopulmonary resuscitation, according to the utility model, it is designed so that the bottle has a volume between 0.5 and 3 1 and in particular 2 1, the size of which is designed to operate. 450 bar, and contains up to 800 l of gas mixture (O + A) under pressure.

It is expedient to implement the portable device for applying a gas mixture in cardiopulmonary resuscitation, according to another variant of the utility model, in which the adjusting control panel for regulating the flow of the gas mixture (0 + A) contained in the bottle is equipped with a display. to display signals and information on the readiness of the device for operation, depending on the physical data of the patient and in particular his height, as well as a control button placed in the standby position.

An embodiment of the present utility model is also provided, in which the portable device for administering a gas mixture in cardiopulmonary resuscitation has an autonomous device containing an additional bottle is an oxygen-enriched mixture, which is a separate part to the portable device for providing access in Bluetooth mode or UBS connection of medical staff to resources and programs and which additional device is connected is an external means of communication, in particular a tablet for sending commands to the control unit and in particular to its corresponding programmable logic controller, to change parameters and configure the portable device .

The portable device for administering a gas mixture in cardiopulmonary resuscitation, according to the utility model, is well designed so that the battery, which is sized to ensure the operation of the device of at least 30-60 or 120 mm, is suitable for connection. to a conventional charger available in ambulances for immediate power generation when recharging.

At the same time, the display included in the tuning control panel signals the drop of the battery charge.

In addition, the portable device for administering a gas mixture in cardiopulmonary resuscitation, according to the utility model, can also be made in a variant in which the additional bottle is made of a composite material and the oxygen-enriched gas mixture contained therein has oxygen present in concentration. , greater than 21%.

In another embodiment of the portable device for administering a gas mixture in cardiopulmonary resuscitation (CPR), according to the utility model, the valve, designed as a first pressure reducer, reduces the pressure of the gas mixture (O + A) for supply to the second pressure reducer, connected to the control system and to deliver a gas mixture (O + A) to the patient during resuscitation.

3602 Descriptions to utility registration certificates № 02.2 / 28.02.2020

In this case, the portable device for administering a gas mixture in cardiopulmonary resuscitation according to the utility model is preferably:

- weighing up to 5 kg;

- with the possibility of carrying on the shoulders or by hand;

- equipped with a means of connection to the mains to charge the battery during continuous operation of the device.

Another embodiment of the portable device for administering a gas mixture in cardiopulmonary resuscitation according to the present utility model is provided, in which the bottle containing the gas mixture (O + A) is made of carbon steel, aluminum alloy or composite material, it has an inner lining of metal, aluminum, steel or polymer composite material.

In yet another preferred embodiment of the portable cardiopulmonary resuscitation (CPR) gas mixture device, according to the present utility model, it further comprises means for connecting to an endotracheal tube.

There is also a variant in which the portable device for administering a gas mixture in cardiopulmonary resuscitation, according to the proposed utility model, further includes a device for detecting and measuring carbon dioxide (CO ₂ ) in the patient's blood.

The portable device for administering a gas mixture in cardiopulmonary resuscitation, according to the utility model, is also equipped with an additional device for auto-resuscitation of the patient with manual application of a gas mixture contained in the bottle, even in case of a dropped battery.

The CPR ventilator device, which is the subject of this utility model application, meets the needs described above and, in addition, has small dimensions and the necessary portability characteristics, is adapted to be advantageously incorporated into emergency medical equipment and more specially positioned near the defibrillator.

Advantageously, the portable CPR ventilator device, according to the utility model, is configured to be used by untrained persons so as to allow anyone to administer to the patient the gas mixture containing oxygen and argon (O + A) in the first minutes. after the clinical event, or immediately after the patient had ischemia due to cardiac arrest.

Specifically, as illustrated below, the CPR fan is designed and engineered to be suitable for safe use by:

- persons without special practice or training;

- trained persons arriving, for example, by ambulance at the site of the clinical event, as volunteers working as paramedics; and specialized staff or doctors.

As noted above, even where the ventilator of this model is located to be used when needed is crucial and should be very close to the site of the clinical event.

A favorable solution is, for example, for the ventilator to be placed near the defibrillator, assuming that this position is one in which there are usually many people willing to intervene in the patient suffering from cardiac arrest and therefore need to be resuscitated. .

Of course, the CPR fan must also be available in ambulances, hospitals, offices and clinics, and must be designed to receive approvals for the transport of vessels and aircraft, and rescue vehicles in general.

Explanation of the attached figures

These and other objectives, features and advantages of the present utility model will become clear and obvious from the following description of one of its preferred embodiments, given only as a non-limiting example with reference to the accompanying drawings, of which:

Figure 1 is a three-dimensional graphical view of a portable CPR ventilator device corresponding to the present utility model for administering a mixture of oxygen and argon and other gases to a patient to be resuscitated;

3603 Descriptions to utility registration certificates № 02.2 / 28.02.2020 figure 2 is a functional diagram with blocks of the device of fig. 1, according to the utility model, for administering a mixture of gases containing oxygen and argon to a patient during his cardiopulmonary resuscitation.

Description of a preferred embodiment of the portable CPR fan device according to the utility model

As mentioned above, the current utility model aims at a new, useful and cost-effective device, in particular a ventilator, which is intended for use in cardiopulmonary resuscitation, also called by the English acronym CPR, and which is adapted to ventilate and insert into the lungs. to the patient while resuscitating, a mixture of gas and is therefore also called a CPR ventilator.

According to the first essential feature of the present utility model, the gas mixture (O + A) administered to the patient during resuscitation using this portable CPR ventilator device includes in particular oxygen and argon, or oxygen and argon plus other gases to prevent and avoid cardiac and cerebral damage to the patient caused by ischemia and / or reperfusion after cardiac arrest.

In particular, the utility model is based on the finding that the administration of argon through the respiratory tract, together with the techniques and procedures of cardiopulmonary resuscitation of a person suffering from cardiac arrest, effectively protects both myocardial and neuronal cells from lesions induced by ischemia and / or reperfusion after cardiac arrest.

Therefore, as proposed with the CPR ventilator, according to the utility model, the application of argon, together with and simultaneously with the maneuvers and standard manual operations provided by cardiopulmonary resuscitation, allows, as an advantage, better and more effective cardioprotection together with better and more effective neuroprotection compared to argon administration only after cardiopulmonary resuscitation.

In addition, according to another advantageous feature of the applied model, the device type CPR ventilator, it is characterized by good portability and ease of use, which allows immediate and easy application of the gas mixture containing argon to the patient at the time of the clinical event, ie. is. when the patient undergoes ischemia after cardiac arrest.

As is known, cardiopulmonary resuscitation usually involves manual or mechanical chest compressions along with ventilation, or by inhalation and introduction of air into the patient's lungs, or contains only chest compressions.

Advantageously, the CPR ventilator device according to the present utility model is intended for use even during resuscitation operations, or during compression and expansion of the patient's chest, as schematically shown by the double arrow CPR in FIG. . 2.

In a similar manner as provided by the known art, the gas mixture can be administered and administered in a passive manner, by introducing, through a tube, the gas flow into the airways of the patient to be resuscitated.

Examples of this application are when the gas flow is applied through a mask or nasal tube, directly into the upper device or endotracheal tube, or also with jet ventilation and oscillating ventilation.

In summary, in the context of the CPR ventilator portable device described above, the utility model is intended to provide forced ventilation with a protective argon-containing gas mixture to a patient during cardiopulmonary resuscitation, at the site of the clinical event, and until the patient is transferred to the emergency department of the hospital.

It also follows that the CPR ventilator can be used to protect and activate the patient's cardiac circulation, both initially and during the performance of actions required by cardiopulmonary resuscitation, both as a result and on arrival of the patient in a hospital equipped with emergency services and intensive care.

As indicated, the CPR ventilator device is specially configured to administer a mixture of oxygen and argon or oxygen, argon and other inert gases to the patient affected by ischemia, preferably the concentration of argon in the case of a mixture consisting only of argon

3604 Descriptions to certificates for registration of utility models № 02.2 / 28.02.2020 and oxygen, to be between 20 and 80% by volume.

In addition, as already mentioned, other gases such as helium, krypton, neon, xenon, nitrogen, hydrogen may also be present in the gas mixture, in which case the preferred concentration of argon is greater than 10%.

The portable CPR ventilator device according to the utility model is equipped with a battery so as to provide ventilation time, using the gas mixture, to the patient to be resuscitated, between 30 rain and 2 hours, preferably between 30 and 60 rain.

In case there are electrical contacts (eg ambulances), the CPR fan type device can be charged or can be used continuously by the power supply.

In particular, as described in detail below, ventilation is developed and manufactured by the storage system in which the argon-containing gas mixture is stored in order to continue and direct it through a pneumatic circuit to supply the patient with an interface in which circuit this interface may include a nasal or facial mask or even a connector adapted to be connected via the appropriate endotracheal tube connector.

The portable CPR ventilator is also equipped with an airway pressure relief system to prevent damage from overpressure to the patient's lungs, a pulmonary pressure indicator, and a series of analog and digital indicators that show the proper functioning of the CPR ventilator device, in turn, corresponding to the correct rhythm of the patient's breathing during cardiopulmonary resuscitation.

Also an advantage of the CPR fan type device according to the present utility model is that it is portable, battery powered, can also be powered by external mains connection, and can be connected to a defibrillator module.

In addition, as described below, the portable CPR fan device according to the utility model is designed and engineered for safe use based on various operating modes, in particular by:

- persons without special training or coaching, according to an operational regime called "option easy" or in English "option easy";

- trained people who, for example, arrive by ambulance at the site of the clinical event where the patient received cardiac arrest, or voluntary paramedics, in accordance with an operative mode of use of the device called "intermediate" or in English "option medium" “;

- medical staff, in accordance with the method of work, called "advanced option" or in English "option top".

In more detail, taking into account the following possible different modes of operation of the device, the patient's breathing sequence can be selected by a qualified physician, for example via a USB key, and instead fully automatically when the device is used by non-medical personnel.

As stated and shown in Figure 1, the portable CPR fan type device according to the utility model has a lightweight structure characterized by reduced dimensions so as to be portable.

In particular, the CPR fan device shall be designed in such a way as to have the appropriate size and weight for easy and convenient transport of the operator's shoulders.

For example, with reference to FIG. 1, the approximate dimensions of the CPR ventilator device, excluding the bottle or additional oxygen-containing cylinders intended for special applications, as further described, corresponding to the "advanced option" reserved for physicians, are the following dimensions:

-L1 = 400 ± 100 mm;

- L2 = 600 ± 150 mm;

- L3 = 250 ± 150 mm.

The indicative weight is less than 5 kg.

Of course, the above sizes and weights are optional and can be changed to

3605 Descriptions to utility model registration certificates № 02.2 / 28.02.2020 depending on the possible applications for which the CPR fan device is intended.

In more detail, with reference to Figure 1 and the corresponding block diagram of the figures in Figure 2, the portable CPR fan type object of this utility model is generally indicated by pos. 10 and consists of:

- tubular support frame 11, which supports the various parts of the portable device 10 type CPR fan;

- at least one bottle, marked 12, contains a mixture of gas M, consisting of oxygen and argon (O + A), to be administered to patient P while resuscitating;

- a valve 13 connected to the cylinder 12, normally positioned in the closed position to prevent leakage of the gas mixture M (O + A) from the cylinder 12, in which this valve 13 in the open position is adapted to operate as a first reducer of the cylinder. gas mixture flow pressure M (O + A) when exiting and feeding directly from the cylinder 12;

- a control unit 14, in particular composed of a programmable logic controller PLC, in which programs and algorithms aimed at controlling and controlling the operation of the portable device 10 type CPR fan are stored;

- second pressure reducer to regulating system, generally marked with pos. 16, of the gas mixture flow M (O + A) supplied by the cylinder 12 and coming from the first pressure reducer 13, where the second pressure reducer to the control system 16 is designed to be controlled by the control unit of the control unit 14; and

- adjusting control panel 15 connected to the programmable logic controller PLC of the control unit 14, which allows the operator to adjust and control the flow of the gas mixture M supplied by the portable device 10 type CPR fan, in which this adjusting and control panel 15 contains a display 15a, adapted to visualize and send to the same operator signals and information related to the operation of the portable device 10.

In addition, pending use in a wide variety of possible locations, the portable device 10 according to the utility model is intended to be powered by a battery indicated by 21 in FIG. 2, wherein this battery 21 is dimensioned to ensure the operation of the portable device 10 and the flow of the gas mixture M (O + A) for a time ranging from 30 to 60 min, or 120 min and is of the rechargeable type, so that it can be connected to a conventional charger, for example, already available in ambulances.

When using the portable device 10, the display 15a included in the tuning control panel 15 is adapted to generate a visual signal about its operation, for example it shows a signal "DOES NOT WORK" if the battery 21 that powers the portable device 10 has fallen and therefore not is able to supply any energy.

In particular, this message "DOES NOT WORK" is generated automatically and is shown on the display 15 a, when there is no more energy in the battery 21, and when the battery charge 21 of the portable device 10 is sufficient, the display 15a 0 does not show any signal and therefore is black or in another version appears the inscription, "ACTIVE" or one with a similar meaning.

In addition, as described below, the display 15a of the adjustment control panel 15 has the function to show visually to the operator before applying the gas mixture M (O + A) to the patient to be resuscitated or who is already reviving that in the portable device 10 everything is working properly and is therefore ready for use. The adjusting control panel 15 is provided with a control button 156.

The device 10 is also connected to a breathing mask 17, which can be placed in a free compartment 18 formed therein to deliver to the patient in resuscitation the gas mixture M (O + A) under reduced pressure supplied by the second reducer. of pressure to the control system 16.

This free compartment 18 formed in the portable device 10 has sufficient space to accommodate both the breathing mask 17 required to administer to the patient the gas mixture M (O + A) supplied by the bottle 12 and the flexible tube marked with pos. 19, which connects the breathing mask 17 to the gas mixture flow control system 16 M (O + A) to be administered to the patient.

3606 Descriptions to utility registration certificates № 02.2 / 28.02.2020

The bottle 12, containing a gas mixture M (0 + A) consisting of oxygen and argon, is preferably made of a composite material so as to have a reduced weight in favor of the transportability and portability of the device 10.

In principle, this bottle 12 can be made and coated with any type of material, provided that the material in contact with the gas mixture M (O + A) contained in the bottle 12 is compatible with the latter.

The pressure of the gas mixture inside the cylinder 12 can reach 450 bar and is preferably about 300 bar.

The capacity of the bottle 12 containing the gas mixture M (O + A) varies from 0.5 to 3 L of the geometric volume, and is preferably equal to 2 L, so as to contain an operating pressure of 450 bar to 800 L of gas mixture.

The valve 13 connected to the cylinder 12 may be a conventional commercial valve or, preferably, may be suitably designed and dimensioned to allow a unit gas flow with a predetermined flow rate and a defined end pressure of the gas mixture M (O + A ) which exits the cylinder 12 so as to act as a pressure relief device.

Preferably, the pressure of the gas mixture M (O + A) after the valve 13 or at the outlet of the cylinder 12 is between 1 and 10 bar.

As already mentioned, the gas mixture M (O + A) contained in the bottle 12 has at least 20% oxygen.

Preferably, this gas mixture M (O + A) is enriched with oxygen, in case of use in "advanced variant" or "option top" and, for example, can reach a concentration of 50% oxygen or higher , with the remaining argon gas.

The same procedures adopted for the preparation of an oxygen-enriched gas mixture M (O + A) are also applicable to mixtures composed of other gases.

Gas mixtures M (O + A) administered to patients may contain only argon and oxygen, or, as already mentioned, may be mixtures containing argon, oxygen, nitrogen, hydrogen, xenon, helium, krypton, neon in various concentrations, from the moment the operation of the portable device 10 type CPR ventilator does not depend on the specific composition of the gas mixture M, which is administered to the patient in resuscitation.

In particular, as described below, if the portable device 10 type CPR ventilator is set to operate in "easy option" or "intermediate option", the oxygen concentration to be administered to the patient cannot be changed. and is equal to the concentration of oxygen in the gas mixture M contained in the bottle 12.

However, in the case of an "advanced option" or "option top" intended for specialized medical staff by doctors, the oxygen concentration is appropriately changed by the medical staff itself.

When using the portable device 10 type CPR fan, the flow of the gas mixture M, which exits the cylinder 12, even if the pressure is already reduced by the valve 13 in the open position, enters an area or part of the portable device 10 type CPR fan, where the pressure and flow rate of this flow are controlled more precisely.

In particular, this portion of the portable CPR ventilator device 10 includes a series of devices that allow precise and efficient control of the flow of the gas mixture M, depending on the breathing characteristics of patient P during resuscitation.

In this part of the portable device 10 type CPR fan is also located a control unit 14 composed of PLC, which controls its operation.

The rest of the portable CPR fan device 10, left free and unoccupied by the bottle 12, the control unit 14 and the second pressure reducer to the gas mixture flow control system 16, is used to determine and shape the free compartment 18, which houses the breathing mask 17 and the flexible tube 19, which connects it to the second pressure reducer to a regulating system 16.

The breathing mask 17 connected to and located in the portable device 10 type CPR fan,

3607 Descriptions to utility registration certificates № 02.2 / 28.02.2020 generally correspond to a 'basic model', which implies its easy use by the operator and, in particular, is not required to be placed so as to fit perfectly on the face of the patient.

Therefore, in this way, namely by providing a breathing mask 17 of normal type and standard, it can be easily applied without the need for people with special skills, ie by untrained persons, when the portable device 10 type CPR fan is intended to work and be used in the "lssssn variant", which avoids the possibility of these persons causing pneumatic damage to the internal organs of the patient.

It also follows that the differences in the characteristics of the portable device 10 type CPR fan, according to the utility model, when designed to operate on the basis of "easy option", compared to those when designed to operate on the basis of " intermediate variant ', refer to the type of breathing mask 17 that can be used by the operator of the portable device 10 type CPR fan.

In particular, the breathing mask 17 provided in the case of using the portable device 10 type CPR fan in accordance with the "intermediate variant" can be placed in the corresponding special free compartment 18 formed in the portable device 10 type CPR fan, accompanied by a warning placed on the portable device 10 type CPR fan, such as "THIS MASK CAN ONLY BE USED BY A MEDICAL PERSON", or a similar warning.

On the other hand, the breathing mask 17, which can be used in the case of an "easy variant", is connected to the corresponding flexible tube 19, which connects it is the second pressure reducer to the control system 16 of the portable device 10 type CPR fan.

Furthermore, for the sake of completeness, it should be noted that for the use and on the biological and medical properties and effects of argon, the applicant company of this utility model has already applied for a European patent (EP 16183930.3), which describes a special gas a mixture containing mainly oxygen and argon and possibly other gases intended to be administered to a patient in context and in connection with cardiopulmonary resuscitation CPR to prevent brain and heart damage, induction of ischemia and / or lack or reduced blood flow to the brain his after a cardiac arrest.

Description of how the utility model can be used

A more detailed description of the use and operation of the portable device 10 type CPR ventilator, according to the utility model, for administering the gas mixture M containing oxygen and argon (O + A) to a patient in a state of cerebral ischemia during cardiopulmonary his resuscitation.

The advantage is that in order to make the use of the CPR ventilator type 10 device easy and immediate by the respective operator, the various operations that must be performed for its proper functioning and its rapid use in the patient in a state of cerebral ischemia are briefly described and symbolically, shown on the panel pos. 20, part of the same portable device 10 type CPR fan shown in Figure 1.

In operations to be performed by an operator, when the patient has cerebral ischemia usually as a result of cardiac arrest, the operator resorts to and uses the portable device 10 type CPR ventilator, according to the utility model, the following actions should be performed:

- to open the valve 13, connect the cylinder 12 so as to allow free flow of the gas mixture M (O + A) from it;

- to place the control button 15b in the standby position, also called in English "stand by position", shown in Figure 1, which is included in the adjustment and control panel 15 of the portable device 10 type CPR fan;

- to check the signal on the display 15a of the adjustment and control panel 15, which shows that everything is working properly in the portable device 10 type CPR fan;

- adjust the adjustment and control panel 15 to the height of patient P to be

3608 Descriptions to utility registration certificates № 02.2 / 28.02.2020 be resuscitated and press the corresponding figure shown on it;

- place the respirator 17 on the face of patient P, who must be resuscitated; and

- place the control button 15b from the waiting position in the control position of the portable device 10 type CPR fan.

As indicated, the correct sequence, as described above, of the operations to be performed, is appropriately indicated on the panel 20 of the portable device 10 itself type CPR fan and can also be transmitted by voice recording.

In general, these operations are designed to properly prepare the portable device 10 type CPR ventilator until its activation to apply the gas mixture M to the patient in a state of cerebral ischemia, which requires resuscitation as soon as possible.

It is specified that the valve 13, made as a first pressure reducer connected to the cylinder 12, is preferably of a special type, is not adjustable, therefore from the initially closed position, it can be placed in the open position in which it is completely open and once the portable device type 10 CPR fan is placed by the operator in the open position, it can no longer be returned to the closed position.

Therefore, in this way, incorrect operation of the valve 13 is avoided in the excited moments in which action is taken to activate and use the portable device 10 type CPR ventilator on the patient.

Patient height selection P automatically regulates and determines the flow of the gas mixture M according to the algorithms and programs stored in the programmable logic controller (PLC) of the control unit 14.

At this point, after the completion of the preparation phase, the portable device 10 type CPR ventilator is switched on to operate in accordance with the specific mode of operation corresponding to the type and skills of the respective operator to be applied to patient P, in connection with his cardiopulmonary resuscitation CPR, shown with a double arrow in fig. 2, the gas mixture M (O + A) containing oxygen and argon, preventing brain and neurological damage to patient P.

The portable device for application of gas mixture in cardiopulmonary resuscitation (CPR), according to the present utility model is used for work in different modes or variants, according to the characteristics, skills and type of personnel, which are intended to use it for gas mixture delivery (O + A), namely:

In the first variant of operation, the so-called "easy variant" or "option easy", the portable device 10 is adapted to be used by non-technical and non-specialized personnel.

In this embodiment, the control unit 14 consisting of a programmable logic controller (PLC) is programmed to control the operation of the portable device 10, based on a predetermined specific program for generating a gas flow with a pressure determined to avoid pneumatic injury to the patient, even in the case of tracheal block.

In a second mode of operation, in particular an "intermediate variant" or "option medium" for use by trained personnel of the portable device, the control unit 14 consisting of a programmable logic controller (PLC) is programmed to operate the portable device 10, based on of a predetermined specific program for generating a gas flow with pressure intended for application to the patient by a mask of an operator, professional type.

In a third variant of operation, in particular an "advanced variant" or "option top" for the use of the portable device 10 by specialized medical personnel who, in Bluetooth mode or via USB connection, have access to the resources and programs stored in the programmable logic controller (PLC) control unit 14, programmed to select and set the appropriate pressure and oxygen concentration in the gas mixture (O + A) intended for patient administration, by connecting an additional device, which is an additional and separate part to the portable device 10 and which contains an additional oxygen bottle.

Therefore, if the portable device 10 type CPR fan is activated to operate in the operating mode corresponding to the "easy option", it will work for the introduction of the gas mixture M based on

3609 Descriptions to utility model registration certificates № 02.2 / 28.02.2020 of the program stored in control unit 14, which corresponds to "easy version".

However, if the portable CPR fan device 10 is activated to operate in accordance with the mode of operation corresponding to the "intermediate variant", it will operate to introduce the gas mixture M based on the program stored in the control unit 14 corresponding to this "intermediate option".

Finally, if the portable device 10 type CPR fan is activated to operate in accordance with the operating mode corresponding to the "advanced version", it will work to introduce the gas mixture M based on the program stored in the control unit 14 corresponding of this "extended version".

As described above, the main difference between the so-called "easy option" and the so-called "intermediate" option corresponds to and is reflected in the difference in the type of mask that is for untrained staff corresponding to "easy". variant ”and the trained personnel corresponding to the“ intermediate variant ”can use it accordingly to deliver the gas mixture M containing oxygen and argon to patient P.

In addition, there are other important differences that distinguish between the so-called "advanced option" or "option top", provided and reserved for doctors, compared to the other two "easy option" and "intermediate" options. ", Provided respectively for untrained and moderately trained people.

In particular, doctors or other persons and professionals who are specially trained or who are legally responsible for the use of the portable device 10 type CPR fan have at their disposal an additional device separate from it, which may be, if necessary, the latter is connected.

In detail, this additional device is as an additional and separate part with respect to the portable device 10 type CPR fan and consists of:

- a bottle containing oxygen or a bottle containing a gas mixture (O + A), enriched with oxygen; and

- a special program key or 'software key', which stores a program for controlling this additional device, which is an additional and separate part with respect to the portable device 10 type CPR fan.

This additional and separate part is not intended to accompany the portable device 10 type CPR ventilator, but is usually carried by doctors or trained persons who arrive at the site of the clinical event to assist and resuscitate the patient, for example an ambulance.

Like the bottle 12 already included and forming an integral part of the portable CPR fan device 10, this additional bottle containing an oxygen-enriched mixture is made of a composite material to obtain a minimum weight.

The operating pressure in this additional bottle can reach 450 bar, but is preferably about 300 bar.

When used, the additional bottle, it can be connected in a very simple way is the portable device 10 type CPR fan and is equipped with a corresponding pressure relief valve, which is configured to work in the same way as the valve 13, the bottle 12 is connected, containing the gas mixture M (O + A) is argon, an integral and essential part of the portable device 10 type CPR fan, so that this additional pressure relief valve is intended to be located in only two positions, respectively "open" and "closed" “And once opened it cannot be closed.

Through the software key or "software key" the doctor has access to many different functions controlled by the PLC of the control unit 14 of the portable device 10 type CPR fan, and using them, can change, for example, the oxygen concentration in the mixture M, which the patient P, the supply and delivery pressure of the same mixture M, its flow rate and the relative injection time must be administered to patient.

However, access to the programmable logic controller (PLC) allows the physician to advantageously use the portable device 10 type CPR ventilator during chest compression massages provided by cardiopulmonary resuscitation to exhale air from the lungs.

3610 Descriptions for utility registration certificates № 02.2 / 28.02.2020 and during the next recovery phase for inhalation of air.

In addition, the program or software that allows the physician to access the programmable logic controller (PLC) resources of the control unit 14 may be loaded into a tablet.

Therefore, once the tablet is connected in USB or Bluetooth mode to the portable device 10 type CPR fan, the commands for the programmable logic controller (PLC) can be given by a doctor using the touch screen or "touch screen" of the tablet on which the parameters of the portable device 10 type CPR fan can also be specified.

It is therefore clear from the above description that the present utility model fully achieves the set objectives, and in particular offers a new and useful portable device 10 type CPR ventilator for administering a gas mixture containing special argon, in combination cardiopulmonary resuscitation of a patient who suffers from cardiac arrest to avoid and prevent the patient's heart and brain lesions caused by ischemia and / or lack or reduced blood flow to the brain as a result of this cardiac arrest.

In addition, an advantage of the device is its portability, which allows, when necessary, easy and immediate use in cardiopulmonary resuscitation of a patient suffering from ischemia due to cardiac arrest.

Options

Of course, without prejudice to the principle and basic technical concepts of the present utility model, it is also clear that the portable device 10 type CPR ventilator for the introduction of gas mixture in cardiopulmonary resuscitation to avoid and prevent heart and brain lesions in a patient caused by ischemia or lack or decreased blood flow as a result of cardiac arrest, may be subject to changes, modifications and improvements with respect to what is described and illustrated herein without departing from the scope of the same. useful model.

For example, based on a first embodiment, the portable CPR ventilator device 10 may include a CO ₂ detector, which may be useful to avoid hyperoxygenation of the patient during the resuscitation phase.

As already illustrated, the gas mixture introduced into the patient may contain gases other than oxygen and argon, and in particular helium.

In this case, the gas mixture may consist of oxygen in a percentage of at least 21%, preferably argon in a percentage higher than 10%, and helium, is a balancing function, so as to obtain a slow mixture, for easy breathing and therefore suitable for facilitating breathing in some patients.

It is clear that in this case the ability to predict helium in the composition of the gas mixture is determined by the low molecular weight of this gas, which makes the gas mixture administered to the patient easy to breathe.

In addition, the portable device 10 type CPR fan can be designed so that it can easily pass the approval tests to be transported by airplane or helicopter.

Finally, as already shown, the design and configuration of the portable device 10 type CPR fan can be such as to allow transportation as in a backpack, or by hand, as in a bag.

Claims (14)

Claims A portable device for the administration of a gas mixture (O + A) in cardiopulmonary resuscitation of a patient, comprising - tubular support frame (11) for supporting its parts; - at least one bottle (12) containing a gas mixture (O + A), consisting of oxygen and argon, for administration to the patient in resuscitation; - a valve (13) for preventing the leakage of the gas mixture (O + A), the bottle (12) is connected and made as a first pressure reducer for filling the gas mixture (O + A) from it; - a control unit (14) consisting of a programmable logic controller for controlling and controlling the operation of the portable device (10); 3611 Descriptions to utility registration certificates № 02.2 / 28.02.2020 - a gas mixture flow control system (16) (0 + A) supplied by the cylinder (12) comprising a second pressure reducer connected to the control unit (14); - an adjusting control panel (15) including a display (15a) for controlling the portable device (10) by an operator; and - a battery (21) for powering the portable device (10); characterized in that the portable device (10) is connected to a breathing mask (17) for applying the gas mixture (O + A) under reduced pressure from the second reducer connected to the control system (16). Portable device for administering a gas mixture in cardiopulmonary resuscitation according to claim 1, characterized in that the valve (13) is non-adjustable and is provided with a mechanical means for placing in the closed position to prevent leakage of the gas mixture (O + A) from the cylinder (12) and in an irreversibly open position to ensure the free supply of the gas mixture (O + A) from it. Portable device for administering a gas mixture in cardiopulmonary resuscitation according to claims 1 and 2, characterized in that it comprises a free compartment (18) in which the breathing mask (17) for feeding the gas mixture (0 + A) is placed contained in the bottle (12) and a flexible tube (19) for connecting the breathing mask (17) to the second pressure reducer to the gas mixture flow control system (16) (0 + A) supplied to the patient by the portable device 10). Portable device for administering a gas mixture in cardiopulmonary resuscitation according to any one of the preceding claims 1 to 3, characterized in that the bottle (12) has a volume between 0.5 and 3 1 and in particular 2 1, it is dimensioned and designed for operation with pressure up to 450 bar, and contains up to 800 1 gas mixture (O + A) under pressure. Portable device for administering a gas mixture in cardiopulmonary resuscitation according to any one of the preceding claims 1 to 4, characterized in that the adjusting control panel (15) for regulating the flow of the gas mixture (O + A), contained in the bottle (12) is provided with a display (15a) for visualization of signals and information about the readiness of the device (10) for operation, depending on the physical data of the patient and in particular his height, as well as a control button (156) placed in the waiting position. Portable device for administering a gas mixture in cardiopulmonary resuscitation according to any one of the preceding claims 1 to 5, characterized in that there is an autonomous device comprising an additional bottle with an oxygen-enriched mixture, which is a separate part to the portable device (10) for providing access in Bluetooth or UBS mode to medical personnel to resources and programs and which additional device is connected to an external means of communication, in particular a tablet for sending commands to the control unit (14) and in particular to the respective its programmable logic controller, for changing the parameters and setting of the portable device (10). Portable device for administering a gas mixture in cardiopulmonary resuscitation according to any one of the preceding claims 1 to 6, characterized in that the battery (21) sized to ensure operation of the device (10) of at least from 30-60 or 120 min, is adapted for connection to a conventional charger available in ambulances for immediate generation of energy during recharging; and wherein the display (15a) included in the adjusting control panel (15) signals a drop in battery charge (21). Portable device for administering a gas mixture in cardiopulmonary resuscitation according to any one of the preceding claims 1 to 7, characterized in that the additional bottle is made of a composite material and the oxygen-enriched gas mixture contained therein has oxygen available in a concentration greater than 21%. Portable device for administering a gas mixture in cardiopulmonary resuscitation according to any one of the preceding claims 1 to 8, characterized in that the valve (13), designed as a first pressure reducer, reduces the pressure of the gas mixture + A) for submission to the second 3612 Descriptions to utility registration certificates № 02.2 / 28.02.2020 pressure reducer connected to the control system (16) and for delivery of gas mixture (0 + A) to the patient during resuscitation. Portable device for administering a gas mixture in cardiopulmonary resuscitation according to any one of the preceding claims 1 to 9, characterized in that the portable device (10) is: - weighs up to 5 kg; - is possible to carry on the shoulders or by hand; - provided with a means of connection is an electrical network for charging the battery (21) during continuous operation of the device (10). Portable device for administering a gas mixture in cardiopulmonary resuscitation according to any one of the preceding claims 1 to 10, characterized in that the bottle (12) containing the gas mixture (O + A) is made of carbon steel, of aluminum alloy or composite material, having an inner lining of metal, aluminum, steel or polymer composite material. A portable device for administering a gas mixture in cardiopulmonary resuscitation according to any one of the preceding claims 1 to 11, characterized in that it further comprises means for connecting to an endotracheal tube. Portable device for administering a gas mixture in cardiopulmonary resuscitation according to any one of the preceding claims 1 to 12, characterized in that it further comprises a device for detecting and measuring carbon dioxide (CO ₂ ) in the patient's blood . A portable device for administering a gas mixture in cardiopulmonary resuscitation according to any one of the preceding claims 1 to 13, characterized in that an additional device for auto-resuscitation of the patient is provided, manually administering a gas mixture comprising in the bottle (12), even in the event of a fallen battery (21).