WO2021214349A1

WO2021214349A1 - Protective device for arranging a respiratory accessory over the upper airway to provide assisted ventilation and/or intubation with a video laryngoscope

Info

Publication number: WO2021214349A1
Application number: PCT/ES2020/070249
Authority: WO
Inventors: Luis Antonio Ruiz
Original assignee: Prodol Meditec S.A.
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2021-10-28

Abstract

The invention relates to a protective device for placing a respiratory accessory over the upper airway to provide assisted ventilation and/or intubation with a video laryngoscope, in processes which require contact of a medical professional with the upper airway of a patient. The device comprises a sheet and the purpose thereof is to provide a physical barrier to protect the medical professional or person who handles and places the respiratory accessory on the patient, for example, a mask or a video laryngoscope for the subsequent introduction of an endotracheal tube into the patient, from the fluid and air expelled by the patient, in order to avoid potential infection. The device essentially has a sheet with dimensions sufficient for at least covering the face or head of the patient, with an opening for introducing the respiratory accessory and tight retaining means for fitting said respiratory accessory.

Description

PROTECTION DEVICE FOR DISPOSAL OF A RESPIRATORY ACCESSORY ON THE UPPER AIRWAY TO PROVIDE ASSISTED VENTILATION AND / OR INTUBATION WITH VIDEO LARYNGOSCOPE

OBJECT OF THE INVENTION

The invention, a protection device for disposition of a respiratory accessory over the upper airway to provide assisted ventilation and / or intubation with a video laryngoscope, is used for processes that require, by the medical professional, contact with the upper airway of a patient, for example, to provide assisted ventilation, by placing a ventilation mask on the patient, or to intubate with a video laryngoscope, that is, to arrange on the patient a respiratory accessory used to facilitate the patient's breathing. The device comprises a sheet and is intended to provide a physical barrier to protect the medical professional, or person who handles and arranges the respiratory accessory on the patient, which for example can be a mask or a video laryngoscope for subsequent introduction into the patient from an endotracheal tube, fluids and expired air from the patient, to avoid possible infections. The device essentially has a sheet with sufficient dimensions to at least cover the face or head of the patient, with an opening for the introduction of the respiratory accessory, for example, a video laryngoscope or a coupler to a mask, and means of watertight retainers to fit said respiratory accessory, preferably a mask coupler or video laryngoscope to the opening in the foil. Likewise, the device preferably has a retention support plate, with greater rigidity than the sheet, and attached to it and the hermetic retention means, in order to keep the sheet at a distance from the patient, thus creating between the sheet and the patient's face a workspace. The sheet acts as a shield, separating the professional from the patient to avoid possible infections in both directions, from the patient to the professional and vice versa.

The field of application of the present invention is framed in the sector of the industry dedicated to the manufacture of medical accessories and in particular medical accessories related to assisted ventilation of patients and in general with respiratory devices. BACKGROUND OF THE INVENTION

As is known, highly contagious diseases by air, such as the COVID-19 virus, among others, make it necessary to take extreme precautions when treating patients. In this sense, the placement of ventilation masks in patients, as well as the subsequent intubation and placement of devices such as video laryngoscopes to guide the endotracheal tube inside the patient for subsequent attachment to said tube of a respirator, represent a moment of high risk of contagion due to the proximity of the personnel, in charge of the assisted ventilation process who must place the mask as well as perform the intubation, with the patient's mouth and nose.

The objective of the present invention is to provide a means to avoid said contagion without limiting the vision or the need for proximity between the professional and the patient during the processes that require contact by the professional with the patient's upper airway, enabling the supply of assisted ventilation, as well as successful intubation.

EXPLANATION OF THE INVENTION

The present invention has as its first object a protection device for processes that require contact with the airway of a patient with the ultimate aim of providing assisted ventilation to the same, for example, by placing a mask and its corresponding respirator, or by intubation with a video laryngoscope according to claim 1. Likewise, the device of the present invention could be used in other processes that present a risk of contagion and require contact with the upper airways of a patient through the placement or introduction of any medical device in them.

The present device has a sheet with sufficient dimensions to cover, at least, the head of a patient, said sheet presenting: an upper surface, facing the professional in charge of contacting the airways, for example, to place a breathing accessory , such as a mask and its accessories or a video laryngoscope to perform an intubation, determining the clean side, and a lower surface, facing the patient determining the side likely to be contaminated or dirty side, a first opening for the introduction of the respiratory accessory , preferably one end of a mask coupler with means for connect to a mask and a respirator, this coupler specially designed to connect to the first opening, or a video laryngoscope, and a hermetic retention means for the hermetic adjustment of said respiratory accessory, mask coupler or video laryngoscope, to said first opening of the sheet, specifically the end of the coupler opposite the tubular end that is attached to the mask (between both ends there is another tubular coupling for the connection of a respirator) or the proximal end of the video laryngoscope or its handle, which is the end that is kept outside the patient's mouth during intubation, while the distal end is the one that is inserted into the patient's mouth.

By means of the device, the head of the professional or intubator is separated from the head of the patient, by means of the sheet. After the introduction of the respiratory accessory, a mask connection coupler or video laryngoscope, through the first opening of the sheet, its distal part is below the sheet, that is, on the side that will face the patient , or dirty side. The professional introduces his arms under the sheet to hold the mask coupled to the connection coupler or the proximal end of the video laryngoscope, that is, the handle, keeping his head above said sheet and away from the patient, to later hold the mask on the patient or introduce the distal end of the video laryngoscope into the patient's mouth, and in the latter case, to later introduce the endotracheal tube that is also below the lamina. On this lower side, the respirator will also be connected to the mask coupler, so that the professional can activate the respirator and hold the mask on the patient from the dirty side. On the upper side of the sheet, the clean side, where the head of the professional or intubator is located, the viewer of the video laryngoscope will be located or the video laryngoscope display screen attached to the proximal end of the same or some will come out of the video laryngoscope. cables for connection to a screen or electrical connection, depending on the characteristics of the video laryngoscope.

The device object of the present invention is not limited to being used with a specific respiratory accessory, specific type of mask or with a specific video laryngoscope, but can be used with any type of mask or video laryngoscope, among other respiratory accessories, for which it will be necessary adapt to each specific case the first opening in the sheet and the hermetic retention means between the opening in the sheet and the respiratory accessory. Said airtight retention means may comprise: an airtight fastening element of the respiratory accessory, for example, mask coupler or video laryngoscope, with means for holding a mask coupler and / or video laryngoscope, preferably its handle, and means for attaching to the sheet, and / or a reinforcing support plate with a hole coinciding with the first hole of the sheet, preferably adhered to the sheet, to give rigidity to the sheet and facilitate the connection between the coupler or the video laryngoscope to the sheet , as well as to separate the sheet from the patient during the placement of the mask or intubation, and / or a complementary sealing element, to reinforce the seal between the upper surface of the sheet and / or the hermetic clamping piece and / or or the mask coupler or the video laryngoscope.

The hermetic fastening element can be the same regardless of the respiratory accessory to be coupled, that is, the same fastening element can be used to receive a mask coupler and to receive a video laryngoscope.

According to the above, the protection device could have a hermetic fastening element and / or a support plate and / or a complementary sealing element. The hermetic fastening element can be a piece that can be attached to the protection device or a piece that is part of the respiratory accessory itself, mask coupler or video laryngoscope, in the latter case in particular arranged on the handle or proximal end thereof. . Regardless of whether or not the protection device incorporates said hermetic fastening element (as mentioned, it may be incorporated in the respiratory accessory itself), the device may or may not incorporate a retention support plate, although preferably it incorporates it, which will give consistency. to the sheet and at the same time will help to achieve a better retention of the hermetic fastener on the device. The last component, the complementary sealing element, may or may not be incorporated into the device, depending on the respiratory accessory, both the mask coupler and the video laryngoscope, or the rest of the components used as hermetic retention means.

The air-tight fastener of the breathing accessory, Mask or video laryngoscope can have different constructions and components, for example, among other possible constructions, it can comprise: a tubular piece of plastic material, preferably ABS or similar, preferably manufactured by injection, and joined at its upper end to the lower surface of the sheet or of the support plate, the hollow of the tubular body coinciding with the first hole in the sheet. In the hollow of the tubular body, whose section of the hollow is preferably complementary with the external shape of the respiratory accessory, mask coupler or handle or body of the video laryngoscope, and in which said respiratory accessory is inserted, it preferably has an interior gasket. in the perimeter of the hole, to improve the tightness in the union with the respiratory accessory, while the outer shape of the tubular body does not present any limitation; and / or a tubular piece of plastic material into which the respiratory accessory is inserted, similar to the previous one, but that to achieve the hermetic closure between both an elastic tape is arranged that is compressed by actuating a cam; and / or a piece of plastic material with a tubular body and into which the respiratory accessory is inserted, where the tubular body has a rubber or neoprene-like material in its interior hole, which determines an interior hole in the piece that is not complementary to that of the breathing accessory, mask coupler, or video laryngoscope body or handle. Said part with a tubular body can be opened, for example by means of a hinge, for the introduction of the respiratory accessory into its interior and subsequently closed so that the material of the interior hole adapts to the shape of the outer body of the respiratory accessory. The closing means can be of a different type, such as a flange or the like. This piece of tubular body is subsequently attached to the sheet or to the support plate by, for example, an adhesive tape that ensures airtightness between the upper end of the tubular piece and the lower surface of the sheet or support plate; and / or a piece with an annular body of elastic material, attached or coupled to the perimeter of the first opening of the sheet or of the opening of the support plate, and into which the respiratory accessory is inserted in a tight manner; and / or An adhesive tape preferably adhered to the lower surface of the sheet or the support plate and which can also be adhered to the respiratory accessory, preferably to the mask coupler or to the handle of the same, so that a part of the tape is adhered to the sheet and another part of the tape adheres to the respiratory accessory after its introduction in the first hole, closing the gap that may exist between the sheet and the respiratory accessory and therefore achieving a hermetic closure at the junction between said first opening and the respiratory accessory, mask coupler or handle of the video laryngoscope.

The union between any of the previous hermetic fastening elements and the sheet or the support plate can be carried out in different ways, for example, by means of adhesives between both elements (in the case of tubular pieces, placing the adhesive between the upper end of the part, which preferably has a perimeter fin, and the lower surface of the sheets), which may or may not be combined with projections on the fastening element that engage in holes in the sheet; or pressure introduction of the hermetic fastening element in the sheet, preferably in the support plate; or as progress has been made through the use of masking tape.

An expert will be able to combine, if necessary, some of the previous hermetic fasteners of the respiratory accessory depending on the requirements of the respiratory accessory or the conditions of the placement of the mask or intubation to be performed. It should be taken into account that this hermetic fastening element could, depending on the preferred embodiment, be integrated into the respiratory accessory itself, for example, in the mask-to-mask coupler or in the handle or proximal end of the video laryngoscope.

The retention means may be suitably particularized, depending on the respiratory accessory to which the device is intended, type of mask coupler or video laryngoscope model, to guarantee its hold and the hermeticity or watertightness in the union between both, so preferably the hermetic retention means comprise a tubular body whose interior is complementary to the body of the respiratory accessory that is inserted into said tubular body and its exterior is complementary to the first opening.

Preferably, the dimensions of the sheet should be such that they cover at least the head or face of the patient, although preferably they also extend to cover the chest of the patient. The sheet can have different shapes, such as, for example, circular, square or rectangular with rounded corners, rectangular with two decreases in width in the area where the respiratory accessory is located to facilitate the introduction of the arms of the professional or intubator under the blade for the manipulation of the laryngoscope, and even two lateral openings for the introduction of the arms of the professional or intubator from the upper side to the lower side. These openings will allow the introduction of the arms in a tight manner (for example, cuts in the sheet or openings with overlapping layers of a flexible material that allow the introduction of the arm, etc.) to keep the space above the sheet separate, clean side, of the space below it, dirty side. Alternatively, the openings can be approximately circular and have on the lower surface, joined to each one, by means of an adhesive or by heat welding, a tubular sleeve of plastic material also, which at the opposite end to the one joining the sheet , have an elastic element that decreases its diameter, so that, when the professional's hands are inserted, each cuff is perfectly adjusted on the wrist or arm, thus ensuring hermeticity or watertightness. The plastic material of these sleeves is preferably PVC or a medical grade plastic, which is transparent, and with a thickness preferably between 30 pm and 100 pm, more preferably 50 pm.

The protection device can also incorporate adhesive tapes or other equivalent elements on the upper surface of the sheet, for example, ropes, which serve to be able to fasten the sheet to fastening elements other than the protection device, for example, wires. or cables arranged over hospital beds.

The sheet is flexible, with a thickness preferably between 20 pm and 80 pm, more preferably 50 pm, and preferably of a plastic material, preferably PVC or a medical grade plastic, which is also transparent for the professional or person who performs. intubation can see through the foil to correctly position the breathing accessory and place the mask and / or insert the endotracheal tube. The flexibility of the sheet allows it to be folded for folding, for example, for packaging and / or to adopt a suitable shape to cover the patient.

Preferably, if the protection device is to be used for intubation, and to be effective in cases where the video laryngoscope integrates a channel to guide the endotracheal tube, and therefore, at the beginning of intubation, the proximal end of the endotracheal tube protrudes from the proximal end of the handle of the video laryngoscope, whereby the blade comprises a second opening that is adjacent to the first opening and has, attached to said second opening, a container or bag, for receiving said proximal end of the tube. The only mouth of the container or bag is attached to the perimeter of the second opening preferably by an adhesive or by heat welding. Said bag or container is attached to the upper surface of the sheet and its objective is to receive at least the endotracheal tube used for intubation, which may or may not incorporate a guide element inside it. The endotracheal tube is inserted through the lower part of the sheet into the bag, or container, simultaneously with the introduction of the video laryngoscope in the first opening. During and after intubation, the intubator can manipulate the tube from the underside of the lamina with one hand while holding the video laryngoscope with the other. Said bag or container is also preferably made of a plastic material, preferably PVC or a medical grade plastic, also transparent, and with a thickness preferably between 30 pm and 100 pm, more preferably 50 pm.

As mentioned above, a possible component of the hermetic retention means of the device is a reinforcing support plate attached, preferably, to the lower surface of the sheet. The reinforcement support plate has an opening coinciding with the first opening of said sheet to also allow the attachment of the hermetic fastening element to said first opening, said hermetic fastening element being adjusted to the opening of said reinforcing support plate, but in In this case, instead of being attached to the lower surface of the sheet, the retention means are attached to the support plate, which in turn remains attached to the sheet as mentioned above. The objective of this support plate is, in addition to giving consistency to the union between the hermetic clamping element and the sheet, to create a ceiling over the patient's head during the placement of the mask or intubation to prevent as much as possible that the sheet comes into direct contact with the patient's face and avoid discomfort for the patient if he is conscious during the previous process, mask placement or intubation. This support plate creates a space above the patient's face that allows the breathing accessory to be manipulated with precision.

Said reinforcement support plate can have different configurations, for example, circular, elliptical, square or rectangular with rounded corners to avoid damaging the sheet to which it is attached. Likewise, if the sheet comprises a second opening, the support plate will preferably have a recess that it will coincide with said second opening to be able to access the bag or container of the endotracheal tube. Also, this recess facilitates the manipulation of the endotracheal tube from the lower side of the sheet. The opening of the support plate coinciding with the first opening of the sheet, through which the respiratory accessory is introduced, is arranged adjacent to the side of the reinforcing support plate that is closest to the patient's chest during insertion of the accessory. respiratory tract, especially during the introduction of the video laryngoscope in order not to hinder the introduction of the distal part of the video laryngoscope into the patient's mouth.

Preferably the support plate is made of a plastic material, more rigid than the previous ones, and preferably also made of PVC or a medical grade plastic, and also transparent, with a thickness preferably between 1.5 mm and 3 mm, more preferably 2 mm .

The surface of the support plate and the vertical axis of the sealing fastener preferably have an angle between them that is less than 90 ° and greater than 70 °. The reason for this inclination of the clamping element with respect to the support plate, and the sheet, is to facilitate the introduction of the respiratory accessory into the patient's mouth, especially when it is a video laryngoscope due to its length and the curve that is necessary. do for its introduction in the mouth, to avoid that the accessory hits the chest of the patient.

Another possible component of the hermetic retention means is said complementary sealing element to reinforce the seal between the hermetic fastening element and the sheet or the support plate, depending on whether or not the protection device comprises said support plate. This complementary sealing element is arranged on the upper surface of the sheet to reinforce, on the upper side of the sheet, the seal between the upper surface of said sheet and / or the hermetic fastening element and / or the respiratory accessory, coupler mask or video laryngoscope handle. This complementary sealing element will preferably be a cover, although it can also be an adhesive tape, or both, depending on the type of respiratory accessory to be used with the protection device.

As already mentioned, the respiratory accessory can be a video laryngoscope, and within these it can be one of any of the known types. For example, a video laryngoscope type Airtraq © or similar, which is distinguished because the image is viewed through a viewfinder at its proximal end or a connected camera in the viewer and because it incorporates a channel where the endotracheal tube is housed; or a video laryngoscope type Glysdescope © that is distinguished by the fact that the image is viewed through a screen separate from the handle to which the image arrives through a cable connected to said handle and because it does not have a channel where the endotracheal tube is housed ; or a McGrath © type video laryngoscope, whose main characteristic is that the image is viewed through a screen integrated in the handle and because it does not have a channel where the endotracheal tube is housed.

In the specific case of video laryngoscopes, such as respiratory accessories in which the image is seen through a viewer at the distal end of the video laryngoscope, for example, Airtraq © style or others, and in order to ensure the hermeticity of the connection between the video laryngoscope, the hermetic clamping element and the sheet, said cover is arranged on the upper surface of the latter, which is attached to said upper surface of the sheet. Said cover allows the connection of a camera with this type of video laryngoscope on the proximal end of the handle and has an upper and a lower opening for the transmission of the image that comes from the distal end of the video laryngoscope to the outside of it. This cover is preferably made of a plastic material, preferably PVC or medical grade plastic, and also transparent, with a thickness preferably between 5 pm and 35 pm, more preferably 20 pm. The cover preferably has, for its hermetic connection to the sheet, a lower projection that is inserted inside the first hole, between said hole and the hermetic fastening element or the video laryngoscope, and a lateral flap that is arranged, preferably by adhesion , on the upper surface of the sheet, thus helping to prevent contamination from passing from the lower side of the sheet to the upper side and vice versa. As an alternative to said cover, an adhesive tape may be arranged around the first hole so as to hermetically join the upper surface of the sheet with the video laryngoscope.

In the specific case of video laryngoscopes, particularly those in which the image is viewed through a viewfinder at the distal end of the video laryngoscope, Airtraq © style or others, the handle of the video laryngoscope will be inserted into the first opening through the lower part of the sheet being attached to it through the hermetic retention means. On the upper surface there is a cover that helps to guarantee the tightness between the laryngoscope or video laryngoscope and the sheet. On said cover the vision system will be attached, preferably a camera or media transmission of the image to a monitor, which will assist the intubator in introducing the endotracheal tube into the patient.

In other types of video laryngoscopes, such as the Glydescope © type or the McGrath © type, with a cable coming out of the video laryngoscope handle or a screen attached to the video laryngoscope handle, the video laryngoscope can be inserted into the first hole through the top side of the sheet.

Subsequently, the patient can be intubated. To do this, the professional or intubator will hold the video laryngoscope by the lower part of the film or dirty side with his hands, keeping his head on the upper part of it or clean side, so that both heads, that of the intubator and the of the intubated patient are separated by the blade, but the hands of the intubator are on the underside without interference from the blade. During intubation, the endotracheal tube is introduced into the patient. In the specific case of video laryngoscopes that include a channel to guide the endotracheal tube, Airtraq © style or others, the distal end of the endotracheal tube is located in the channel of the video laryngoscope and the proximal end housed in the bag or container of the device object of the invention, so that during intubation the intubator can slide the endotracheal tube into the patient with one hand, specifically towards the trachea, while holding the video laryngoscope with the other hand.

In the case of video laryngoscopes without a channel to guide the endotracheal tube, said endotracheal tube is located during intubation in the hand of the intubator and below the sheet, it is not necessary for the protective device object of the invention to comprise the bag or container cited above.

Once the endotracheal tube has been introduced, through the vocal cords, the video laryngoscope is withdrawn from the mouth next to the sheet, keeping the endotracheal tube in the patient. An intubator assistant, who has not been in contact with the dirty side below the protective device, can remove the camera from the laryngoscope or disconnect the cables from the video laryngoscope that have always remained isolated from the patient, and therefore have not been contaminated, for later reuse.

In the case of using the protection device object of the invention with a mask, or helmet, as a respiratory accessory, it will be necessary to use a mask coupler that preferably will have a hollow body and that will at least comprise: A first hole for the outlet of air arranged at its lower end or distal end to be coupled to the face mask or helmet that will be arranged on the patient's face,

A coupling projection at its upper end or proximal end to be coupled to the protection device through the first opening of the sheet by means of a hermetic protection means, and

A second port for the inlet of air, from a respirator, which is arranged between the first port and the coupling projection.

The mask coupler therefore connects to the mask, or helmet, through the first hole to subsequently connect to the first opening of the device from the lower surface of the sheet, using the corresponding airtight retention means. The coupler is also connected to a respirator, usually manual, and operated by the professional from the dirty side, that is, below the sheet. The professional, therefore, keeps one hand on the mask or helmet on the patient and with the other can operate the manual respirator.

Regarding the sheet and its components, as well as the respiratory accessory, mask coupler, and the video laryngoscope attached to the sheet, they can be reused after disinfection and sterilization by any of the known means if the materials of the different components allow it. , or they can be directly discarded.

Other objects of the present invention are also a system for intubations, made up of a video laryngoscope and a protection device according to any of the options described above, and a method of manipulating the protection device described above.

The system for processes that require contact with the upper airway of a patient will include:

A device according to any of the alternatives described above, and A respiratory accessory coupled to the first hole of said device.

As already mentioned, the respiratory accessory may be a mask coupler, a video laryngoscope with or without a guide channel for the endotracheal tube, with the screen integrated in the handle of the video laryngoscope, or a screen that can be attached to the viewfinder or the handle. video laryngoscope, or with the screen separated from the video laryngoscope and attached by cables to it.

The method of handling the protection device comprises at least the following stages: a) Introduction by a medical professional of the respiratory accessory in the first job of the sheet from the bottom or top of it and ensure its tightness. In the case of the mask coupler, it will be inserted through the lower part, while in the case of a video laryngoscope, the handle, or proximal end, of the same will be inserted in the first opening, through the lower part of the sheet or through the top of it, depending on the type of video laryngoscope. The hermetic retention means of the device will be used to ensure the hermetic coupling between the foil and the breathing accessory. b) Holding the respiratory accessory with the hands of the medical professional by the lower part of the sheet while keeping the professional's head on the upper part of it.

In the event that the respiratory accessory is a video laryngoscope, the professional will hold it with his hands by the distal end of the handle or video laryngoscope, below the blade, and then proceed to the introduction of the distal end of the laryngoscope or video laryngoscope , through the patient's mouth, and subsequent manipulation of the endotracheal tube for its introduction through the vocal cords of the patient, keeping the hands of the medical professional, or intubator, by the lower part of the blade and his head separated by the upper part of the device sheet.

In the event that the respiratory accessory is a mask coupler, the medical professional, in addition to connecting the coupler to the device, must connect, or have previously connected the mask and respirator to said coupler. In this way, and always operating from the lower part of the sheet, or dirty side, the professional will be able to hold the mask on the patient with one hand and with the other hand to activate the breathing when it is manual.

In accordance with the foregoing, the protection device of the invention can be used consecutively on a patient with different respiratory accessories. In the first place, the protection device could be used with a mask coupler, for which the mask connected to the respirator would be connected to it and later the assembly would be coupled to the protection device. Once the assembly is attached, the device is placed on the patient, in particular on the mouth and nose, and oxygen is supplied, thus providing assisted ventilation. to the patient and keeping the patient separate from the medical professional to avoid possible contagion.

Subsequently, the mask and coupler could be removed from the lower part of the sheet of the protection device and the video laryngoscope could be inserted into said device to proceed with the introduction of the video laryngoscope into the patient, maintaining the separation between the patient and the medical professional. After the introduction of the video laryngoscope and the corresponding connection of the visualization means, the medical professional proceeds to intubation the patient by pushing the endotracheal tube inside the patient and following its trajectory with the visualization means of the laryngoscope.

DESCRIPTION OF THE DRAWINGS

To complete the description of the present invention and in order to facilitate the understanding of the characteristics of the present invention, a set of figures with an illustrative and non-limiting character is included in the present specification, as an integral part thereof.

Figure number 1 shows a top perspective view of the protective device object of the invention and an enlargement of a detail of a hermetic retention means for a video laryngoscope in the protection device.

Figure number 2 shows the elements of the invention, a sheet with two openings and a bag or container before being attached to one of said openings.

Figure number 3 shows a hermetic retention means of the device of the invention in the process of being assembled to a reinforcing support plate attached to the sheet of the device.

Figure number 4 shows the hermetic retention means of figure 3 with a cover of said means prior to their assembly.

Figure number 5 shows the installation of the hermetic retention means in a sheet with the bag or container incorporated.

Figure 6A shows a protection device, object of the invention, without a bag or container, with a video laryngoscope attached to the sheet, the video laryngoscope being of the Glydescope © type or similar, without an endotracheal tube channel or integrated screen, having a cable that connects the laryngoscope handle to a vision and / or power supply system.

Figure number 6B shows a protection device, object of the invention, without bag or container, with a video laryngoscope attached to the sheet, the video laryngoscope being of the McGrath © type or similar, without a channel for an endotracheal tube, but with a screen incorporated into its handle.

Figure 6C shows a protection device, object of the invention, with a bag or container for the endotracheal tube, with a video laryngoscope attached to the sheet, the video laryngoscope being of the Airtraq © type or similar, with a channel for the endotracheal tube and with a viewer at the proximal end of the handle to which a screen can be attached, observing how the end of the endotracheal tube is inserted into the bag or container.

Figure 7 shows the solution of Figure 6C with the video laryngoscope inserted into a patient, observing how the sheet covers the patient's head, how the arms operate through the lower part of the sheet, one hand holding the video laryngoscope and the other the endotracheal tube, with the proximal end of the endotracheal tube inserted into the bag or guide. The head of the intubator is positioned above the lamina, separated from the head of the patient, facing the screen to allow intubation.

Figure 8 shows a device according to the present invention with a video laryngoscope of the type shown in Figures 6C and 7 prior to intubation and without the screen connected.

Figure 9 shows a section A-B of the device with a video laryngoscope (not sectioned) according to figure 8.

Figure 10 shows a perspective view of a protection device according to the present invention with two tubular bags for the introduction of the arms and the professional from the clean side to the dirty side.

Figures 11A and 11B show two perspective views of a mask coupler.

Figure 12 shows a section CD of Figure 10.

Figures 13 and 14 show two perspective views of a mask coupler connected to the protection device.

Figure 15 shows a side view of any of the previous figures.

Figure 16 shows a section E-F of the figure of view 14.

Figure 17 shows the device of Figures 12 to 15 with the mask coupler connected to a respirator and to a mask placed on a patient, observing how the sheet covers the patient's head, as the arms operate by the lower part of the sheet introduced into the two tubular bags, while one hand holding the mask and the other the respirator. The head of the medical professional is positioned above the lamina, separated from the head of the patient.

PREFERRED EMBODIMENT OF THE INVENTION

Based on the previous figures and the description of the invention made below, several examples of embodiment of the invention are included, a protection device for disposing of a respiratory accessory over the upper airway to provide assisted ventilation and / or intubation. with a video laryngoscope.

Figures 1 to 5 show a preferred protection device object of the invention that can be coupled to a respiratory accessory, which will preferably be a mask coupler or a video laryngoscope. The mask coupler will preferably have means for connecting a mask and respirator thereto, which may be either manually activated or automatically activated.

A protection device for a respiratory accessory is observed with a sheet 2 of a flexible and transparent plastic material, with an upper surface and a lower surface with a first opening 3 and a hermetic retention means 7 for the hermetic adjustment of the respiratory accessory to sheet 2, so that the space on the upper surface of the sheet is kept separate and isolated from the space below the lower surface of the sheet, preventing microorganisms from passing from one side of the sheet to the other through the hermetic retention means 7. Said sheet 2 preferably has a rectangular shape with its rounded corners with sufficient dimensions to cover the head and thorax of the patient on whom the respiratory accessory is to be placed. Sheet 2 is preferably PVC with a thickness preferably 50 µm.

Said hermetic retention means 7 may comprise: a hermetic holding element 73 of the respiratory accessory, mask coupler or video laryngoscope, preferably its handle, with means to hold said accessory and means to join the sheet, and / or a reinforcing support plate 71 with a hole coinciding with the first hole of the sheet, preferably adhered to the sheet, to give rigidity to the sheet and facilitate the union between the respiratory accessory and the sheet, as well as to separate the sheet from the patient during disposition of the respiratory accessory to provide assisted ventilation or to proceed with intubation, and / or a complementary sealing element 72, to reinforce the sealing between the upper surface of the sheet 2 and / or the hermetic clamping piece 73 and / or the respiratory accessory, which may be, for example, a cover 72 or an elastic strap.

Figure 3 shows how the previous elements are coupled to each other, that is, the hermetic fastening element 73 attached to the lower surface of the support plate 71 and in figure 4 the coupling of the complementary sealing element 72, in this case a cover, on the upper side of the support plate 71. In this figure 4 the sheet 2, arranged between said cover 72 and the support plate 71, is not included, being the latter attached to the lower surface of said sheet 2.

The different retention means 7, and in particular the hermetic fastening element 73, will be conveniently customized, according to the video laryngoscope and / or mask coupler model to which the device 1 is intended, to guarantee its hold and the hermetic or watertightness. at the junction between the two, so preferably the hermetic retention means 7 comprise a tubular body 73 whose interior is complementary to the respiratory accessory body, coupler or video laryngoscope and its exterior is complementary to the first opening 3. Figure 3 shows observes a hermetic fastening element 73 that preferably has a piece of plastic material 73 with a tubular body, of approximately square or rectangular section, preferably made of an ABS or similar material, attached to the lower part of the sheet 2, and in which Inside, the mask or video laryngoscope coupler is inserted, preferably its handle. The means for joining the tubular body 73 to the sheet 2 or to the reinforcing support plate 71 may be of a different nature, such as, for example, holes in the sheets 7, 71 complementary to projections in the fastening element 73. For example, in Figure 3 shows holes 711 in the support plate 71 where projections 731 are inserted in the annular element and which are arranged in a fin at the upper end of said hermetic fastening element 73. Additionally and / or alternatively, the Joining means can be pressure, by means of adhesives and / or thermo-welding between both components. Said fastening element 73 may incorporate a hook 732 to facilitate the holding and orientation of the proximal end of the endotracheal tube and its easy insertion in the lower zone of a bag 51 arranged on the upper side of the sheet 2 (which will be described later).

As has been advanced, the retention means 7 may comprise a reinforcing support plate 71 (Figures 1 and 3 to 7), with an opening 713 coinciding with the first opening 3 of the sheet 2. The purpose of said reinforcing support plate 71 is to create a bell over the head of the patient 10 to avoid direct contact of the sheet 2 on the patient during the provision of the respiratory accessory, the performance of mask ventilation or intubation and also provide a workspace for the medical professional, or intubator, to manipulate the mask and / or a respirator also attached to the mask coupler, or the video laryngoscope in comfort. As mentioned, the hermetic fastening element 73 is fitted on said sheet. Likewise, the support plate can have a recess 712 (Figures 1 and 3 to 7) to, among other features, facilitate the handling of the endotracheal tube 413, or the respirator, from the underside of the sheet 2.

Said support plate 71 is preferably made of a transparent plastic material, such as PVC with a greater rigidity than the sheet material, and preferably a thickness of preferably 2 mm.

In either of the two previous alternatives, with or without reinforcing support plate 71, the hermetic fastening element 73 may have different constructions, adapted both to the shape of the first opening 3 in the sheet 2 and to the shape of the accessory. respirator that is inserted inside the annular element 73. In relation to the respiratory accessories, the fastening element 73 will usually adapt to the shape of the video laryngoscope, while, on the contrary, it will be the mask coupler that adapts to the clamping element 73. This will be the case because preferably the same protection device 1 will be used to perform an intubation with a video laryngoscope that will be preceded by the use of a mask with a coupler to supply oxygen to the patient prior to intubation . Different hermetic fasteners 73 could be:

The hermetic fastening element of the respiratory accessory can have different constructions and components, for example, among other possible constructions, it can comprise: a tubular piece 73 of plastic material joined at its upper end to the lower surface of the sheet 2 or of the plate support 71, the hollow of the tubular body coinciding with the first hole 3 of the sheet 2. In the hollow of the tubular body 73, whose section of the hollow is preferably complementary with the outer section of the respiratory accessory, mask coupler and / or handle or body of the video laryngoscope, and into which said accessory is inserted respiratory system, being able to present an internal gasket around the perimeter of the hole, to improve the hermeticity with the joint of the respiratory accessory, while the outer section of the tubular body 73 does not present a limitation; and / or a tubular piece 73 of plastic material in which the respiratory accessory is inserted, similar to the previous one, but that to achieve the hermetic closure between both an elastic tape is arranged that is compressed by actuating a cam; and / or a tubular piece of plastic material and into which the respiratory accessory is inserted, where the tubular body has a rubber or neoprene-type material in its interior hole, which determines an interior hole in the piece that is not complementary to that of the respiratory accessory. Said tubular piece can be opened, for example by means of a joint, for the introduction of the respiratory accessory into its interior and subsequently closed so that the material of the interior hole adapts to the shape of the outer body of the respiratory accessory. The closing means can be of a different type, such as a flange or the like. This tubular piece would subsequently be joined to the sheet or the support plate by means of, for example, adhesive or an adhesive tape that guarantees the airtightness between the upper end of the tubular piece and the lower surface of the support sheet or plate; and / or a piece with an annular body of elastic material, attached or coupled to the perimeter of the first opening of the sheet or of the opening of the support plate, and into which the respiratory accessory is inserted in a tight manner; and / or An adhesive tape, preferably adhered to the lower surface of the sheet or of the support plate, and that can also be adhered to the respiratory accessory, so that a part of the tape is adhered to the sheet and another part of the The tape adheres to the respiratory accessory after its introduction into the first hole, closing the gap that may exist between the sheet and the respiratory accessory and therefore achieving a hermetic seal at the junction between said first opening 3 and the respiratory accessory.

The third possible component of the hermetic retention means 7 is the aforementioned complementary sealing element 72 (see figures 1, 3 and 4) to reinforce the seal between the hermetic clamping piece 73 and the sheet 2 or the support plate 71, depending on whether or not the protection device 1 comprises said support plate 71. This complementary sealing element 72 is arranged on the upper surface of the sheet 2 to reinforce, on the upper side of said sheet 2, the seal between the upper surface and / or the hermetic fastening element 73 and / or the accessory. respirator, either the mask coupler or the video laryngoscope, preferably its handle. This complementary sealing element will preferably be a cover 72, although it can also be an adhesive tape, depending on the type of respiratory accessory to be used with the protection device 1.

As mentioned, figures 1 and 4 show a cover 72 of said retention means 7 attached to said upper surface of sheet 2. Said cover 72 is specially designed for a video laryngoscope and has a tubular body with an opening It allows, see Figure 6C, the connection of a camera 412 on the proximal end of the handle 410 of this type of video laryngoscope 41. In Figures 13, 14 and 15 a cover 72 like the previous one can be seen that for use with A mask coupler 9 has the upper opening of the cover covered, preferably with an adhesive tape. This prevents possible microorganisms from escaping from the bottom of the sheet 2 to the top of it. This cover 72 is preferably made of a transparent plastic material, preferably PVC with a thickness preferably of 20 µm.

Next, the protection device 1 with a video laryngoscope 42, 42, 43 will be described as a respiratory accessory, in particular with reference to Figures 6A, 6B, 6C, 7 and 8.

In those cases in which the protection device 1 is intended to be used with a video laryngoscope that incorporates a channel to facilitate the introduction of an endotracheal tube 413 (Figures 1, 2, 5, 6C and 7), sheet 2 comprises a second opening 5 which is adjacent to the first opening 3 and has, joined to said second opening 5, a container or bag 51 (see figure 2). The only mouth 5 of the container or bag 51 is joined to the perimeter of the second opening 5 preferably by an adhesive or by heat welding. Said bag or container 51 is attached to the upper surface of sheet 2 (see figure 2) and its objective is to receive at least the endotracheal tube 413 used for intubation and which may or may not incorporate a guide element inside it. The endotracheal tube 413 is inserted into the bag 5, or container, through the lower part of the sheet 2 and simultaneously with the introduction of the video laryngoscope in the first opening 3. During and after intubation the The intubator will be able to manipulate tube 413 from the underside of sheet 2 with one hand while holding the video laryngoscope with the other hand. Said bag or container 51 is also preferably made of a transparent plastic material, preferably PVC with a thickness preferably of 50 pm.

Likewise, in those devices in which the support plate has a recess 712 (Figures 1 and 3 to 7) to facilitate the manipulation of the endotracheal tube 413 from the lower side of the sheet 2, said recess will coincide with said second opening 5 to be able to access bag or container 51 of endotracheal tube 413.

The protection device 1 object of the invention may be used with different types of video laryngoscopes, by means of slight adaptations of the device 1 to the characteristics and geometries of the handles of the different video laryngoscopes.

Figure 6C shows a device 1 object of the invention for use with a video laryngoscope type Airtraq © or similar 41, these being of the type that have a handle 410 at the proximal end of the video laryngoscope 41 and on which a viewer is attached. or a chamber 412, and may also include a lateral channel to facilitate the introduction and guidance of the endotracheal tube 413 in the patient. For this type of video laryngoscope 41 in which the camera 412 is coupled and uncoupled from the body of the video laryngoscope 41, the handle 410 of the video laryngoscope 41 is inserted into the hermetic holding element 73 through the lower part of the sheet 2, by which to ensure the tightness of the connection between the hermetic fastening element 73 and the sheet 2, the aforementioned cover 72 is arranged on the upper surface of the sheet, and attached thereto (Figures 1 and 4)

In the above case, the device 1 also has a bag or container 51 to house the endotracheal tube 413 during the intubation process.

The device 1 of the present invention with a video laryngoscope 41, type Airtraq © or similar, prior to the connection of the screen 412, can be seen in Figures 8 and 9.

An alternative to the protective device 1 above, for use with a Glydescope © type video laryngoscope and featuring a single body 430 with a 431 cable connection 432 at the proximal end of the video laryngoscope 43, and without an introduction channel for a Endotracheal tube is shown in Figure 6A. In it, it is observed how the protective device 1 comprises a sheet 2, without a second opening or bag, although it does present the hermetic retention means 7 that comprise a support plate 71 and a hermetic clamping element 73. Said hermetic clamping element 73 will be adapted internally to the outer shape of the proximal end of the video laryngoscope and externally to the shape of the opening 3. In this case, when arranging the video laryngoscope 43 of a cable 432 at its proximal end, the introduction into the first hole 3 of the protection device 1 is carried out through the upper surface of the sheet 2 and subsequently the video laryngoscope 43 is introduced into the patient. To do this, the video laryngoscope 43 is held by its body 430, keeping the hands below the sheet 2 and the head of the intubator above said sheet, so that the intubator does not share space with the patient, since said The space is divided in two by the lamina 2. The endotracheal tube would also be inserted under the lamina 2.

Alternatively, if the connection means 431 could be separated from the body of the video laryngoscope 430, the coupling of the video laryngoscope with the protection device 1 object of the invention would be carried out as in the case described above.

Another alternative is the use of the anterior protection device 1, with a McGrath © type video laryngoscope 42 and which presents a single body 420 with a screen 422 at the proximal end 421 of the video laryngoscope 42, and without a tube introduction channel. endotracheal, is shown in Figure 6B. In it, it is observed how the protective device 1 comprises a sheet 2 without a second opening or bag, although it does present the hermetic retention means 7 that comprise a support plate 71 and a hermetic clamping element 73. Said hermetic clamping element 73 will be adapted internally to the external shape of the proximal end of the video laryngoscope and externally to the shape of the opening 3. In this case, when the video laryngoscope 42 has a screen 422 at its proximal end 421, the introduction into the first hole 3 of the protection device 1 is made by the upper surface of the sheet 2 and then the video laryngoscope 43 is introduced into the patient. To do this, the video laryngoscope 43 is held by its body 430, keeping the hands below the sheet 2 and the head of the intubator above said sheet, so that the intubator does not share space with the patient, since said space is divided in two by the sheet. The endotracheal tube is also introduced below said sheet 2.

Figure 7 shows an example of a protection device 1 according to the invention arranged on a patient 8. Specifically, the device for protection 1 with a video laryngoscope 41 attached like the one in figure 6C inserted into a patient 8. The professional or intubator will hold the laryngoscope with his hands 9 by the lower part of the sheet 2, equivalent to the dirty side, keeping his head by the upper part of it, equivalent to the clean side, so that both heads, that of the intubator and that of the intubated patient 8, are separated by plate 2, but the hands 9 of the intubator are on the lower side without interference from the Plate 2. During intubation, endotracheal tube 413 is introduced into the patient. In the specific case of the video laryngoscope 41 shown and which integrates a channel to guide the endotracheal tube 413, Airtraq © style or others, the distal end of the endotracheal tube 413 is located in the channel of the video laryngoscope 41 and the proximal end is housed in the bag or container 51 of the device 1 object of the invention, so that during intubation the intubator can with one hand 9 slide the endotracheal tube 413 into the patient 9, specifically towards the trachea, while with the other hand 9 holds the video laryngoscope 41. The intubator can observe the entire intubation procedure through the screen 412. It is observed how the support plate 71 of the hermetic retention means 7 prevents contact of the blade 2 with the patient 8.

Once the intubation is complete, the video laryngoscope 41 is removed from the mouth of patient 8 next to plate 2, keeping the endotracheal tube 413 in patient 8. An intubator assistant, who has not been in contact with the dirty side located below the protective device 1, you can remove the camera 412 from the video laryngoscope 41 or disconnect the cables from the video laryngoscope 431, if possible, which have always remained isolated from the patient, and therefore have not been contaminated, to its subsequent reuse.

Figure 10 shows another example of protection device 1 according to the present invention. It can comprise the same elements as the previous ones, mainly a sheet 2, with a first opening 3 and a hermetic retention means 7. The figure shows sheet 2, the bag or container 51 and the cover 72, elements already shown and described above. Likewise, the protection device 1 of this example has two openings 8, approximately circular, in the sheet 2, which have, joined by the lower surface of this sheet 2, a tubular sleeve 81, which is also preferably made of plastic. Said sleeves 81 are attached at one of their ends to the perimeter of the holes 8 of the sheet 2 by means of adhesive or by heat welding. On the other hand, 82 the sleeves 81 show a decrease in diameter, preferably caused by a elastic element, so that, when introducing the professional's hands, each tubular bag is perfectly closed on the hand, thus ensuring the hermeticity or watertightness. The plastic material of these sleeves is preferably PVC or a medical grade plastic, which is transparent, and with a thickness preferably between 30 pm and 100 pm, more preferably 50 pm.

The protection device 1 can also incorporate on the upper surface of the sheet 2, adhesive tapes 21 that serve to hold the sheet 2 to fastening elements other than the protection device 1, for example, a bow arranged on the patient. that can be attached to the beds where surgical interventions are performed.

The protection device 1 described above, in any of its embodiments, can be used with different respiratory accessories, either with video laryngoscopes, as described with reference to Figures 6A to 9, or with mask couplers 9 as shown in the Figures 9 to 16.

Figures 10A to 12 show an example of a mask coupler 9. This mask coupler 9 will comprise a hollow body and at least:

A first hole 91 for the outlet of air arranged at its lower end or distal end to be coupled to the face mask 10 or helmet that will be arranged on the face of the patient 8,

A coupling projection 95 at its upper end or proximal end to be coupled to the protection device 1, through the hermetic retention means 7 to the first opening 3 of the sheet 2, and specifically through the hermetic fastening element 73 attached to plate 71, in turn attached to plate 2, and

A second port 92 for the inlet of air, from a respirator 20, which is disposed between the first port 91 and the coupling projection 95.

Figures 13 to 17 show a mask coupler 9 connected to a hermetic fastening element 73 of a protection device 1 according to the invention. Said protection element 1 comprises a sheet 2, a plate 71 and a cover 72 with its hole covered, preferably by a removable adhesive tape. In this particular case, it can be seen how the mask coupler 9 has on two of its side walls two slits 93 intended to receive two complementary projections arranged on the holding element 73 into which the mask coupler 9 is inserted. Figure 17 shows a protection device 1 as shown in figure 10, with a mask coupler 9 and its accessories. Said device 1 is arranged on a patient 8 and the mask coupler 9 therefore connects with the mask 10, or helmet, through the first hole 91 to subsequently connect with the first opening 3 of the device from the lower surface of the sheet 2, using the hermetic fastening element 73 of the retention means 7. The coupler 9 is also connected to a respirator 20, manually and / or automatically operated, and operated by the professional from the dirty side, that is to say , below sheet 2. The professional, therefore, can keep one hand on the mask 10 or helmet on the patient 8 and with the other can operate or manipulate the respirator 20.

Regarding the sheet 2 and its components, as well as the breathing accessory attached to it, they can be reused after disinfection and sterilization by any of the known means if the materials of the different components allow it, or on the contrary, they can be directly disposed of together with protection device 1.

The figures also show a protection system for the provision of a respiratory accessory over the upper airway of a person, either to provide assisted ventilation with a mask or to perform intubation with a video laryngoscope. The system therefore comprises a respiratory accessory and a protection device as described above.

For example, according to the above, Figures 6A, 6B and 6C show, in addition to a protection device 1, a system for intubations, which is made up of a video laryngoscope 41, 42, 43 and a protection device 1 that it will essentially comprise a sheet 2 with an upper surface and a lower surface, a first opening 3 for the introduction of one end of a video laryngoscope 4 and a hermetic retention means 7 for the hermetic adjustment of said video laryngoscope 4 to said first opening 3 of plate 2.

Likewise, Figures 13 to 17 also show, in addition to a protection device 1, a system for providing assisted ventilation with a mask or the like, which is made up of a mask coupler 9 and a protection device 1 that will essentially comprise a sheet 2 with an upper surface and a lower surface, a first opening 3 for the introduction of one end of the mask coupler 9 and a hermetic retention means 7 for the fit hermetic of said mask coupler 9 to said first opening 3 of the sheet 2.

As can be seen in Figures 9, 15 and 16, the surface of the support plate 71 and the vertical axis of the sealing element 73 can have an angle between them that is less than 90 ° and greater than 70 °. The reason for this inclination of the clamping element 73 with respect to the support plate 71, or vice versa, and the sheet 2, is to facilitate the introduction of the respiratory accessory into the patient's mouth. This inclination is especially useful when the respiratory accessory is a video laryngoscope, since due to its length and the curve that must be made to insert it into the mouth, it could hit or be difficult to insert into the mouth through the patient's chest 8 .

As described above, the method of manipulating the protection device for the provision of a respiratory accessory on the upper airway of a person, either to provide assisted ventilation with a mask or to perform intubation with a video laryngoscope will comprise at least the following stages: a) Introduction by a medical professional of the respiratory accessory in the first job of the sheet from the bottom or top of it and ensure its tightness. In the case of the mask coupler, it will be inserted through the lower part, while in the case of a video laryngoscope, the handle, or proximal end, of the same will be inserted in the first opening, through the lower part of the sheet or through the top of it, depending on the type of video laryngoscope. The hermetic retention means of the device will be used to ensure the hermetic coupling between the foil and the breathing accessory. b) Holding the respiratory accessory with the hands of the medical professional by the lower part of the sheet while keeping the professional's head on the upper part of it.

In the event that the respiratory accessory is a video laryngoscope, the professional will hold it with his hands by the distal end of the handle or video laryngoscope, below the blade, and then proceed to the introduction of the distal end of the laryngoscope or video laryngoscope , through the patient's mouth, and subsequent manipulation of the endotracheal tube for its introduction through the patient's vocal cords, keeping the hands of the medical professional, or intubator, by the lower part of the blade and its head separated by the upper part of the device blade.

Claims

1. Protection device (1) for placing a respiratory accessory on the upper airway to provide assisted ventilation and / or intubation with a video laryngoscope, characterized in that it comprises a sheet (2) with sufficient dimensions to cover, at least, the head and the upper part of the thorax of a patient, said sheet (2) having: an upper surface and a lower surface, a first opening (3) for the introduction of one end of a respiratory accessory, and a hermetic retention means (7) for the hermetic fit of said respiratory accessory to said first opening (3) of the sheet (2).

Device, according to claim 1, characterized in that said sheet (2) comprises a second opening (5), adjacent to said first opening (3), with a container or bag (51) whose lower base, coinciding with the only mouth of the container (52), is tightly connected with said second opening (5) by the upper surface of the sheet, to receive at least one endotracheal tube used for intubation.

Device according to any of the preceding claims, characterized in that the hermetic retention means comprise a reinforcing support plate (71) joined to the sheet (2) presenting an opening coincident with the first opening (3) of the sheet (2). ).

Device according to any of the preceding claims, characterized in that the hermetic retention means (7) comprise a hermetic fastening element (73) between the respiratory accessory and the sheet (2) or the support plate (71).

Device according to claim 4, characterized in that the hermetic fastening element (73) comprises a tubular body whose interior is complementary to the respiratory accessory.

Device according to any of the preceding claims, characterized in that the retention means (7) comprise a complementary sealing element (72) arranged on the upper surface of the sheet (2).

Device according to claim 3, characterized in that the support plate (71) has a recess (712).

8. Intubation system, characterized in that it comprises: A device according to claim 1, and A respiratory accessory.

9. System according to claim 8, characterized in that it comprises a device according to any of claims 2 to 7.

10. System, according to claim 8 or 9, characterized in that the respiratory accessory is a video laryngoscope (41, 42, 43).

System, according to claim 8 or 9, characterized in that the respiratory accessory is a mask coupler (9).

12. System, according to claim 11, characterized in that the mask coupler comprises a hollow body:

A coupling projection 95 at its upper end or proximal end to be coupled to the protection device 1, through the first opening 3 of the sheet 2 by means of a hermetic retention means 7, and a second hole 92 for the air inlet for coupling a respirator 20, which is arranged between the first hole 91 and the coupling boss 95.

13. Method of manipulation of the protection device for the provision of a respiratory accessory on the upper airway of a person, either to provide assisted ventilation with a mask or to perform intubation with a video laryngoscope, it will comprise at least the following steps: a ) Introduction of a respiratory accessory in the first office of the sheet from the lower part or the upper part of it and ensure its tightness, and b) Holding the respiratory accessory with the hands of the medical professional of the respiratory accessory by the lower part of the sheet a while keeping the professional's head on top of it.