Protective equipment for endoscope and protective system for endoscope

Abstract

To address the risk of infection to medical personnel caused by droplets, aerosols, or the like released by a subject during endoscopic examination performed on a subject with an infectious disease.SOLUTION: A protective device 1 for an endoscope comprises a mask main body 5, the mask main body 5 including a first port 10, a second port 20, and a third port 30. The second port 20 and the third port 30 are identical in the size and the shape. An insertion portion 91 of an endoscope 90 is inserted into the first port 10. The second port 20 and the third port 30 are disposed to the left and right with the first port 10 interposed therebetween. Air is suctioned from the mask main body 5 through either the second port 20 or the third port 30 as a suction port, and outside air flows into the mask main body 5 through an inflow port which is the one of the second port 20 and the third port 30 that is not the suction port.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a protective device for an endoscope that is provided with a first port into which an insertion section of an endoscope is inserted, and a protective system for an endoscope. [Background technology]

[0002] When performing endoscopic examinations on subjects with infectious diseases, there is a risk of infection for medical personnel due to droplets and aerosols generated by the subjects. For this reason, medical personnel use high-performance masks, face guards, medical gowns, gloves, etc. to prevent infection.

[0003] There was a need for protective equipment for endoscopes that would further reduce the risk of infection for medical workers.

[0004] International Publication No. 2011 / 127660 discloses an endoscopic mask that has an insertion port into which an insertion portion of an endoscope is inserted and that delivers oxygen or anesthetic gas to a subject. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] International Publication No. 2011 / 127660 Summary of the Invention [Problem to be solved by the invention]

[0006] An embodiment of the present invention relates to a protective device for an endoscope and a protective system for an endoscope that reduce the risk of infection for medical personnel. [Means for solving the problem]

[0007] An embodiment of the protective equipment for an endoscope includes a mask body and a fixing member, and the fixing member holds the mask body so as to be fixed to the head of a subject. The mask body has a first port, a second port, and a third port, and the second port and the third port are the same size and shape. An insertion portion of an endoscope is inserted into the first port. The second port and the third port are arranged on either side of the first port. Air in the internal space of the mask body is sucked in through a suction port of either the second port or the third port, and outside air flows into a substantially sealed space inside the mask body through an inlet port of the second port or the third port that is not the suction port.

[0008] An endoscope protection system according to an embodiment comprises an endoscope protection device and a suction device, the endoscope protection device including a mask body and a fixing member, the fixing member holding the mask body fixed to the head of a subject, the mask body having a first port, a second port, and a third port, the second port and the third port being the same size and shape, an insertion portion of an endoscope being inserted into the first port, the second port and the third port being arranged on either side of the first port, which is located at the position of the mouth of the subject, air in the internal space of the mask body is sucked through a suction port of either the second port or the third port, and outside air flows into the substantially sealed space inside the mask body through an inlet port of the second port or the third port that is not the suction port, and the suction device is connected to the suction port. [Effects of the Invention]

[0009] According to the embodiments of the present invention, it is possible to provide an endoscope protective device and an endoscope protective system that reduce the risk of infection for medical personnel. [Brief explanation of the drawings]

[0010] [Figure 1]FIG. 1 is a side view of an endoscope protective equipment according to a first embodiment. [Figure 2] FIG. 1 is a front view of an endoscope protective equipment according to a first embodiment. [Figure 3] 4 is a flowchart of a method for operating the endoscope protective equipment of the first embodiment. [Figure 4A] FIG. 2 is a front view of a first port of the endoscope protective equipment of the first embodiment. [Figure 4B] FIG. 2 is a front view of a first port of the endoscope protective equipment of the first embodiment. [Figure 4C] FIG. 2 is a front view of a first port of the endoscope protective equipment of the first embodiment. [Figure 4D] FIG. 2 is a front view of a first port of the endoscope protective equipment of the first embodiment. [Figure 4E] FIG. 2 is a front view of a first port of the endoscope protective equipment of the first embodiment. [Figure 4F] FIG. 2 is a front view of a first port of the endoscope protective equipment of the first embodiment. [Figure 5A] FIG. 2 is an exploded perspective view of a port of the endoscope protective equipment of the first embodiment. [Figure 5B] FIG. 2 is an exploded perspective view of a port of the endoscope protective equipment of the first embodiment. [Figure 5C] FIG. 2 is an exploded perspective view of a port of the endoscope protective equipment of the first embodiment. [Figure 6A] FIG. 2 is a front view of a port of the endoscope protective equipment of the first embodiment. [Figure 6B] FIG. 2 is a front view of a port of the endoscope protective equipment of the first embodiment. [Figure 7] FIG. 2 is a front view of the port arrangement of the endoscope protective equipment of the first embodiment. [Figure 8] FIG. 2 is a front view of a fourth port of the endoscope protective equipment of the first embodiment. [Figure 9] FIG. 10 is a front view of a modified example of the endoscope protective equipment of the first embodiment. [Figure 10] FIG. 10 is a front view of an endoscope protective equipment according to a second embodiment. [Figure 11] FIG. 10 is a side view of the endoscope protective equipment of the second embodiment. [Figure 12] FIG. 10 is a side view of an endoscope protective equipment according to a third embodiment. [Figure 13] FIG. 10 is an exploded perspective view of an endoscope protective equipment according to a third embodiment. [Figure 14] FIG. 10 is a side view of an endoscope protective equipment according to a third embodiment. [Figure 15] FIG. 10 is a side view of an endoscope protective equipment according to a third embodiment. [Figure 16] FIG. 10 is a perspective view of an endoscope protective equipment according to a fourth embodiment. [Figure 17] FIG. 10 is a perspective view of an endoscope protective equipment according to a fourth embodiment. [Figure 18] FIG. 10 is a perspective view of an endoscope protective equipment according to a fifth embodiment. [Figure 19A] FIG. 10 is a perspective view of an endoscope protective equipment according to a fifth embodiment. [Figure 19B] FIG. 10 is a perspective view of an endoscope protective equipment according to a fifth embodiment. [Figure 20] FIG. 10 is a cross-sectional view of an endoscope protective equipment according to a sixth embodiment. [Figure 21] FIG. 10 is an exploded perspective view of an endoscope protective equipment according to a sixth embodiment. [Figure 22] FIG. 10 is a side view of an endoscope protective equipment according to a sixth embodiment. [Figure 23] FIG. 13 is a perspective view of an endoscope protective equipment according to a seventh embodiment. [Figure 24] FIG. 13 is a perspective view of an endoscope protection system according to an eighth embodiment. [Figure 25] FIG. 13 is a perspective view of an endoscope protective equipment according to an eighth embodiment. [Figure 26A] FIG. 13 is a perspective view of a connector of an endoscope protective equipment according to an eighth embodiment. [Figure 26B] FIG. 26B is a cross-sectional view taken along line XXVIB-XXVIB in FIG. 26A. [Figure 26C] FIG. 13 is a cross-sectional view of a cap of an endoscope protective equipment according to an eighth embodiment. [Figure 26D] FIG. 13 is a cross-sectional view of a cap of an endoscope protective equipment according to an eighth embodiment. [Figure 26E] FIG. 13 is a cross-sectional view of a cap of an endoscope protective equipment according to an eighth embodiment. [Figure 26F] FIG. 13 is a cross-sectional view of a cap of an endoscope protective equipment according to an eighth embodiment. [Figure 27] 13A to 13C are diagrams illustrating a method of using the endoscope protective equipment of the eighth embodiment. [Figure 28] 13A to 13C are diagrams illustrating a method of using the endoscope protective equipment of the eighth embodiment. [Figure 29] 13A to 13C are diagrams illustrating a method of using the endoscope protective equipment of the eighth embodiment. [Figure 30] 13A to 13C are diagrams illustrating a method of using the endoscope protective equipment of the eighth embodiment. [Figure 31] 13A to 13C are diagrams illustrating a method of using the endoscope protective equipment of the eighth embodiment. [Figure 32] 13A to 13C are diagrams illustrating a method of using the endoscope protective equipment of the eighth embodiment. [Figure 33] 13A to 13C are diagrams illustrating a method of using the endoscope protective equipment of the eighth embodiment. [Figure 34] 13A to 13C are diagrams illustrating a method of using the endoscope protective equipment of the ninth embodiment. [Figure 35] 13A to 13C are diagrams illustrating a method of using the endoscope protective equipment of the ninth embodiment. [Figure 36] 13A to 13C are diagrams illustrating a method of using the endoscope protective equipment of the tenth embodiment. [Figure 37] 13A to 13C are diagrams illustrating a method of using the endoscope protective equipment of the tenth embodiment. [Figure 38] 13A to 13C are diagrams illustrating a method of using the endoscope protective equipment of the tenth embodiment. [Figure 39] 13A to 13C are diagrams illustrating a method of using the endoscope protective equipment of the tenth embodiment. [Figure 40] FIG. 23 is a perspective view of an endoscope protective equipment according to an eleventh embodiment. [Figure 41] 19A to 19C are diagrams illustrating an endoscope protection system according to an eleventh embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] First Embodiment A protective device for an endoscope (hereinafter, sometimes referred to as a "protective device" or "protective mask for an endoscope") 1 according to a first embodiment will be described using Figures 1 and 2. In the following description, the drawings based on each embodiment are schematic diagrams. It should be noted that the relationship between the thickness and width of each part, the thickness ratio of each part, and the like may differ from the actual ones. The drawings may also include parts with different dimensional relationships and ratios. Illustrations and assignment of reference numerals to some components may be omitted.

[0012] <Configuration of endoscope protective equipment> The endoscope 90 has an insertion section 91, an operation section 92, and a universal cord 93. An imaging device (not shown) is disposed at a tip 91A of the insertion section 91 that is inserted into the body of the subject 100.

[0013] The protective equipment 1 is worn by the subject 100 and includes a mask body 5 that forms a substantially sealed space between the mask body and the body. The mask body 5 fits closely to the face, covering the nose and mouth. The mask body 5 is fixed to the head using strings 19. The strings 19 may be looped around the ears, or may be looped around the top of the head as well as the back of the head, and may be made of an elastic material. The mask body 5 may also be fixed to the face by the elasticity or structure of the mask body 5, or by an adhesive member (such as tape).

[0014] The shape of the mask body 5 is set so that the volume of the internal space formed is small to allow good air circulation and so that the mouth and nose do not come into contact with the mask body 5. When the endoscope 90 is inserted orally, the shape of the mask body 5 is designed assuming that the subject 100 will be wearing a mouthpiece.

[0015] The protector 1 comprises at least a first port 10 and a second port 20 .

[0016] The first port 10, into which the insertion section 91 of the endoscope 90 is inserted, is provided at a position facing the mouth and nose of the subject 100. The first port 10 is sized and positioned to accommodate nasal and oral insertion of the endoscope. The first port 10 has a shutter 6 disposed on a ring 10A to prevent the outflow of droplets and aerosols during insertion of the endoscope.

[0017] The shutter 6 of the first port 10 is made up of multiple tongues divided by radial slits SL so as not to impair the airtightness inside the mask body 5. The material of the shutter 6 is preferably softer than the outer skin that forms the outer peripheral surface of the insertion portion 91 and has elasticity so as not to damage the outer peripheral surface of the insertion portion 91, such as resin or rubber.

[0018] When the insertion portion 91 is inserted into the first port 10, the multiple tongue pieces of the shutter 6 come into contact with the outer peripheral surface of the insertion portion 91 and are elastically deformed. No large opening is created around the insertion portion 91.

[0019] In the protective equipment 1, outside air flows into the substantially sealed space inside the mask body 5 via a cylindrical second port 20 which is an inlet port.

[0020] The protective equipment 1 has a mask body 5 that does not prevent the subject 100 from spontaneously inhaling outside air, so droplets, aerosols, etc. generated by the subject remain in the substantially sealed space inside the mask body 5 and are less likely to be released into the surrounding area. This makes it possible for the protective equipment 1 to reduce the risk of infection for medical personnel. The outside air is the air in the examination room / treatment room, but it can also be oxygen shared from a gas cylinder or the like.

[0021] Furthermore, the protective equipment 1 is equipped with a cylindrical third port 30, which is a suction port. Air in the internal space of the mask body 5 is sucked through the third port 30. For example, the third port 30 is connected to a suction device 200 by a suction tube 210. It goes without saying that a decompression tube installed on the wall of the room may be connected instead of the suction device 200. It goes without saying that not only air but also droplets, aerosols, etc. dispersed in the air are sucked in. In other words, substances in the internal space of the mask body 5 are sucked in.

[0022] The protective equipment 1 can reduce the risk of infection for medical personnel because the air in the internal space of the mask body 5 is sucked.

[0023] The protector 1 further includes a fourth port 40 through which a tube is inserted. The fourth port 40 of the protector 1 is a notch on the outer periphery of the mask body 5 through which a cannula or an intubation tube is inserted. The cannula may be inserted through the second port 20. In that case, the hole of the second port 20 is made large enough to allow the cannula to be inserted. In addition, the opening of the second port 20 and the notch in the cap, which will be described later, are also made large enough to allow the cannula to be inserted.

[0024] In the protector of the present invention, the third port 30 and the fourth port 40 are not essential elements.

[0025] The protector 1 further includes a fifth port 61 and a sixth port 62. In the protector 1 shown in Fig. 2, the fifth port 61 is not used and is therefore closed by a cap 71. The sixth port 62, through which outside air flows in like the second port 20, is provided with a cap 72, which is a flow rate adjusting member having a through hole that limits the size of the opening of the sixth port 62, as will be described later.

[0026] The endoscope 90 includes a channel tube 95 that has an opening at the distal end 91A and through which the insertion section 91 is inserted. A plug 96 that closes the opening, which is a treatment instrument insertion port H95 that is an opening on the proximal end side of the channel tube 95, is disposed.

[0027] <How to operate the endoscope protective equipment> The operation of the protective equipment 1 will now be briefly described with reference to the flowchart of FIG.

[0028] <Step S10> Mounting process The mask body 5 of the protective equipment 1 is worn by the subject 100 in a state in which a substantially sealed space is formed between the mask body 5 and the face.

[0029] The mask body 5 is made of a flexible material such as vinyl chloride or silicone rubber that can be tightly fitted to the face and ensures airtightness.

[0030] In order to secure the mask body 5 to the nose, the area facing the nose is preferably bent in advance to the shape of the nose. Alternatively, the area facing the nose may be made of a malleable material that can be bent to fit the shape of the subject's nose.

[0031] Mask bodies 5 are prepared in sizes that suit individual differences. The outer periphery of the mask body 5 may be made of a malleable material that can be bent freely so that the overall shape can be adjusted.

[0032] The first port 10 includes a circular ring (cylinder) 10A disposed in the central opening of the mask body 5 and a shutter 6 attached to the ring 10A. The ring 10A is made of a rigid resin such as nylon, polyacetal, or polypropylene. The shutter 6 is made of so-called chrysanthemum-shaped rubber with radial slits SL. The mask body 5 has an opening for the first port 10, but the ring 10A ensures mechanical strength and maintains its shape. The shutter 6 of the first port 10 is replaceable depending on the application.

[0033] Since it is anticipated that the protective equipment 1 will be used in an operating room or the like, it is preferable that the protective equipment 1 is sterilized and packed in a bag.

[0034] <Step S20> Insertion process The insertion section 91 is inserted into the body of the subject 100 via the first port 10 .

[0035] <Step S30> Removal process When the examination or treatment is completed, the insertion portion 91 is removed from the body of the subject 100.

[0036] In the operation method of the protector 1, during the period from insertion to removal, air in the space is sucked in via the third port 30, and outside air flows into the space via the second port 20.

[0037] According to the above-described method for operating the endoscope protective equipment 1, the risk of infection for medical personnel can be reduced.

[0038] The examination / treatment using the above-described endoscope protective equipment 1 will be explained from the standpoint of the subject 100. (A) The subject 100 puts on the mask body 5 in a waiting room. (B) The subject 100 receives preliminary treatment such as anesthesia. (C) The subject 100 moves to an examination / treatment room. The third port 30 is connected to the suction device 200 via a suction tube 210. (D) While the examination / treatment using the endoscope is being performed, the space inside the mask body 5 is sufficiently ventilated. (E) When the examination / treatment is completed, the suction tube 210 is removed, and (F) the subject 100 moves to a recovery room while still wearing the mask body 5. Even during the transfer, ventilation of the mask body 5 is ensured by spontaneous breathing.

[0039] Alternatively, the subject 100 may wear the mask body 5 in an examination room / treatment room, and remove the mask body 5 in the examination room / treatment room after the examination / treatment is completed.

[0040] <Modification of the first port> The shutter 6 of the first port 10, which is used to prevent deterioration of the sealing ability of the substantially sealed space of the protector 1, is not limited to a so-called "chrysanthemum-shaped" rubber with radial slits SL. The shutter 6 shown in FIGS. 4A and 4B has linear slits SL. The shutter 6 shown in FIG. 4C has an opening H11 for an oral endoscope, a cover 11A covering the opening H11, an opening H12 for a nasal endoscope, and a cover 12A covering the opening H12. The shutter 6 shown in FIGS. 4D and 4E has a slit SL11 for an oral endoscope and a slit SL12 for a nasal endoscope. The shutter 6 shown in FIG. 4F has only an opening H11 for an oral endoscope.

[0041] That is, it is sufficient that at least one opening of the first port 10 is provided at a position facing at least one of the mouth and nose of the subject. Since the first port 10 can accommodate oral and nasal administration, it is preferable that one opening is provided at a position facing both the mouth and nose.

[0042] The shutter 6 is preferably detachable from the first port 10. Alternatively, a plurality of shutters 6 may be attached to the first port 10 in a stacked manner.

[0043] In addition, to prevent droplets from leaking before and after the test, i.e., while the subject 100 is wearing the protective device 1 and waiting, a protective device having a configuration that can completely close the opening, such as a shutter with cover 11A shown in Figure 4C, is preferred.

[0044] For example, the aperture size can be adjusted by configuring the shutter 6 with multiple aperture blades, similar to the iris diaphragm of a photographic lens. A shutter 6 with seven blades forms a heptagonal aperture, but the aperture can also be completely closed.

[0045] Moreover, a cover made of a soft and airtight material such as a highly ductile vinyl resin or cloth may be placed over the shutter 6 having an opening as a second shutter.

[0046] For example, before and after the test, a cover is placed on the mask body 5 so as to cover the entire surface of the shutter 6, which has holes in positions facing the mouth and nose of the subject 100. During the test, the cover is shifted or folded back to expose the upper or lower half of the holes.

[0047] <Modifications of the second and third ports> It is preferable that the flow rate of at least one of the ports through which the air passes, for example the second port 20 or the third port 30, can be adjusted.

[0048] 5A, the cross-sectional area of ​​the joint with the mask body 5 is wider than the cross-sectional area of ​​the tip. If the mask body 5 is in close contact with the subject's cheek, the second port 20 may be blocked, preventing sufficient ventilation. A port with a wider base is less likely to block the second port 20 with the subject's facial surface.

[0049] The second port 20 also has a connector 72A that can be detached from the port to which a suction tube or various luer connectors can be joined.

[0050] The second port 20 shown in FIG. 5B has an opening W20 on its side and a cylindrical cap 71A, which is a stopper with a brim. The size of the opening W20, i.e., the flow rate, can be adjusted by adjusting the depth to which the cap 71A is pushed into the hole H20. The brim-equipped cap 71A is not pushed too deeply into the hole H20, so it does not protrude from the inner surface of the mask body 5. Furthermore, because the cap 71A does not abut against the orifice plate (described below), the holes in the orifice plate are not blocked by the cap 71A. Furthermore, because the second port 20 has an opening on its side, direct droplet diffusion can be prevented. Note that the caps 71 and 72 shown in FIG. 2 or the connector 72A shown in FIG. 5A may also have a brim.

[0051] The cap 73 of the second port 20 shown in FIG. 5C has a slit-shaped abutting portion 73A and a cylindrical abutting portion 73B. The flow rate can be adjusted by adjusting the depth to which the abutting portion 73A is pressed into the hole H20. By rotating the abutting portion 73A, the cap 73 can be oriented so that the slit, which serves as a ventilation port, faces away from the medical worker 120, allowing ventilation in the direction away from the medical worker 120. It is preferable that the brim have a mark (such as an arrow) indicating the direction of the slit. Furthermore, the flow path can be blocked by pressing the abutting portion 73B into the hole H20.

[0052] A second port 20 having an opening W20 on the side surface shown in Fig. 5B may be combined with a cap 73 having a notch shown in Fig. 5C. By changing the overlap between the opening W20 of the second port 20 and the notch of the cap 73, the ventilation direction and flow rate can be adjusted.

[0053] The second port 20 shown in Figure 6A has an orifice plate with multiple circular holes H20A within the hole H20. The second port 20 shown in Figure 6B has an orifice plate with multiple elliptical holes H20A within the hole H20. The orifice plate may also have only one hole large enough to allow a cannula to pass through.

[0054] The third port 30 may have the same configuration as the second port 20. The port may also have a check valve. The port may also have a filter (such as N95) with high filtration efficiency.

[0055] <Variations in the number and arrangement of ports> In the protective equipment 1, the space formed by the mask body 5 is a substantially sealed space that is connected to the outside only by a port.

[0056] As long as the protective device 1 has at least one first port 10 and one second port 20, it can reduce the risk of infection for medical personnel without interfering with the subject 100's spontaneous inhalation of outside air.

[0057] Furthermore, when the third port 30 is provided, the most effective port arrangement can be obtained by considering the air flow in the internal space of the mask body 5. For example, as shown in Fig. 2, when the second port 20 is provided on the left side of the mask body 5 and the third port 30 is provided on the right side of the mask body 5 in the drawing, air flows from left to right in the internal space of the mask body 5.

[0058] The protective equipment 1 shown in Fig. 7 has four second ports 20 in the upper part of the mask body 5 and two third ports 30 in the lower part of the mask body 5. Air flows from the top to the bottom of the internal space of the mask body 5. When the second ports 20 are provided in the upper right part of the mask body 5 and the third ports 30 are provided in the lower left part of the mask body 5 as shown in Fig. 8, air flows from the upper right to the lower left of the internal space of the mask body 5.

[0059] In the protector 1 shown in FIG. 8, the fourth port is a tube 40 through which an intubation tube is inserted.

[0060] The number, arrangement, and shape of the ports of the protective device 1 are set appropriately depending on the application. For example, assuming use in the otolaryngology field or the gastroenterology field, the third port 30 may be provided on only one side (e.g., the right side) of the mask body 5, or the third port 30 may be provided on both sides.

[0061] In a protective device 1 for a bronchoscope having a small-diameter insertion section 91, the opening of the first port 10 may be smaller than that of the second port. The protective device 1 may have two first ports 10: a port for a digestive endoscope and a port for a bronchoscope.

[0062] <Modifications of the mask body outer shape> The mask body 5 may cover the subject's eyes or the entire face. Conversely, a mask that covers only the upper half of the face may be used to ensure sufficient surgical space. That is, as shown in Figure 9, the mask body 5 has a shape in which the lower part of the mask body 5 in Figure 2 is cut off, leaving a gap between the mask body 5 and the face only near the nose. Areas other than the nose may be sealed with tape to prevent any gaps.

[0063] The third port 30 is connected to the suction device 200 via a suction tube 210. Aerosols generated by the subject 100 are sucked through the gap between the mask body 5 and the face, reducing the risk of infection for medical personnel. As shown in Figure 9, the suction tube 210 may be passed through the mask body 5 so that its tip is positioned near the nose of the subject 100.

[0064] Furthermore, the size of the mask body of the present invention may be reduced by cutting off the upper part of the mask body 5 shown in FIG. 2, or by cutting off both the upper part and the lower part.

[0065] Second Embodiment The protective equipment for endoscopes in each embodiment described below is a protective mask for endoscopes similar to the protective equipment 1 and has the same effect, so components with the same functions are given the same symbols and descriptions are omitted.

[0066] The endoscope protective equipment 1A of this embodiment shown in FIG. 10 further includes an overmask (full-face mask) 15 that covers the subject 100 from the head to the chin but does not cover the first port 10 of the main body 5.

[0067] The overmask 15 is a transparent bag with an opening through which the neck is inserted. The overmask 15, which is made of, for example, polyethylene film, is fixed to the outer periphery of the mask main body 5 by, for example, welding, and is integrated with the mask main body 5. After putting on the mask main body 5, the subject 100 puts the overmask 15 on his / her head and fastens the opening of the overmask 15 around his / her neck with a string or the like.

[0068] 11 also has an opening with, for example, rubber disposed on the outer edge at a position corresponding to the mask body 5. Therefore, the outer periphery of the mask body 5 is covered by the over-mask 15A.

[0069] The over-masks 15, 15A may cover the upper half of the body of the subject 100. The over-masks 15, 15A may also have a port for ventilation. When the subject 100 is fitted with a tube such as a nasal cannula, the over-masks 15, 15A have a fixing portion for fixing the tube and an opening for inserting the tube.

[0070] Some subjects 100 may feel frightened when wearing an over-mask. For this reason, the over-mask may also have an opening at the top of the head. With such an over-mask, the over-mask does not cover the eyes until the test begins, and then just before the test begins, the over-mask can be stretched to the top of the head and the opening can be tied on top of the head.

[0071] Third Embodiment The endoscope protective equipment 1B of this embodiment shown in FIG. 12 further includes an insertion section sleeve 16 that is disposed in the first port 10 and that accommodates the insertion section 91 of the endoscope 90 in a substantially sealed state.

[0072] The sleeve 16 includes a ring 16A disposed in the first port 10 and a sleeve 16B which is a sterilized cylindrical bag with openings at both ends. The length of the sleeve 16 is slightly longer than the length of the insertion portion 91. As shown in Fig. 13, the ring 16A at the opening of the sleeve 16 fits into the ring 10A of the first port 10, thereby fixing the sleeve 16 to the mask body 5 without any gaps.

[0073] The opening of the sleeve 16 on the operating section 92 side is tightly fixed to the rear end of the insertion section 91 or the lower part of the operating section 92 using, for example, tape 16C. If the endoscope 90 has a channel tube, it is preferable that the sleeve 16 covers the treatment tool insertion hole of the operating section 92.

[0074] In an endoscopic examination, the distal end 91A of the insertion portion 91 is inserted to the deepest part of the body, and then the distal end 91A is gradually withdrawn for observation. However, there is a risk that viruses and the like may be attached to the surface of the insertion portion 91 inserted into the body of the subject 100.

[0075] In the protective equipment 1B, the insertion part 91 is sealed in the sleeve 16, so that the risk of infection for medical personnel can be reduced.

[0076] The sleeve 16B is made of a flexible material to allow the insertion portion 91 to be grasped and manipulated. The sleeve 16B is also made of a thin material to avoid bulkiness. For example, the sleeve 16B is made of a transparent or translucent flexible resin material such as polyethylene. The cross-sectional area of ​​the cylindrical sleeve 16B may increase or decrease with increasing distance from the ring 16A.

[0077] 14, as the insertion portion 91 is inserted into the body, the sleeve 16B is folded, for example, into an accordion shape. Then, when the insertion portion 91 is removed, the sleeve 16B returns to its cylindrical shape.

[0078] That is, in the method of operating the protector 1B, the insertion portion 91 is housed in the sleeve 16 for the insertion portion, which is in communication with the first port 10, and is thereby sealed during the insertion process and the removal process.

[0079] After the endoscope 90 is removed, the port of the mask body 5 is closed with a cap. When the mask body 5 is used together with an over-mask 15, for example, the insertion section 91 is sealed together with the mask body 5 by tying up the opening on the neck side of the over-mask 15 that has been removed from the subject (FIG. 15).

[0080] The sleeve 16 for the insertion portion allows medical personnel to complete examinations and processing without touching the insertion portion 91. The sleeve 16 for the insertion portion also reduces the risk of diffusion during transportation to and in the reprocessing room where sterilization processing and the like is performed.

[0081] A bag may be used to seal the insertion part 91 after use instead of the over-mask 15. Alternatively, the sleeve 16 may be removed from the mask body 5, and the ring 16A of the sleeve 16 may be covered with a bag.

[0082] While conventional endoscope sleeves are used to protect a clean space inside the sleeve from a contaminated space outside the sleeve, the sleeve of the present invention is used to house a contaminated member in a substantially sealed state.

[0083] The shutter 6 may be provided on the ring 16A of the sleeve 16, rather than on the mask body 5. Also, at least one of the second port for ventilation and the third port for suction may be provided on the ring 16A, rather than on the mask body 5.

[0084] The ring 16A may be conical in shape, with the diameter decreasing with increasing distance from the connection portion with the ring 10A of the first port 10, or may be funnel-shaped, elongated, horizontally elongated, or cross-shaped. In the sleeve 16 having the ring 16A of the above shape, the accordion-shaped sleeve 16B does not enter the mask body 5A and come into contact with the mouth and nose of the subject 100 when the endoscope is inserted. Furthermore, the sleeve 16B of the above-mentioned sleeve 16 can be easily pulled out from its folded state before use into a cylindrical shape when in use.

[0085] <Fourth embodiment> 16 has a channel tube 95 extending from a distal end 91A of an insertion section 91 to a treatment tool insertion port H95 of an operation section 92. A treatment tool sleeve 17 accommodates a treatment tool 99 to be inserted into the channel tube 95.

[0086] The sleeve 17 is a tube made of, for example, polyethylene, similar to the sleeve 16 for the insertion portion. The length of the sleeve 17 is approximately the same as the length of the treatment tool 99.

[0087] One opening of the sleeve 17 covers the lower part of the operating section 92 so as to seal the treatment tool insertion port H95. The other opening of the sleeve 17 is fixed using rubber 17A or the like so as to seal the end of the treatment tool 99. In the sleeve 17 shown in FIG. 16 , the end of the treatment tool 99 is not housed in the sleeve 17, but the entire treatment tool 99 may be housed in the sleeve 17.

[0088] As shown in FIG. 17, when the treatment tool 99 is inserted into the channel tube 95 and the tip of the treatment tool 99 protrudes from the opening of the tip portion 91A of the insertion section 91, the sleeve 17 is folded, for example, in an accordion shape.

[0089] That is, when the treatment tool 99 is inserted and removed, the treatment tool 99 is housed in a substantially sealed state in the treatment tool sleeve 17 that communicates with the treatment tool insertion port H95.

[0090] The sleeve 17 for the treatment tool reduces the risk of infection for medical personnel when operating the treatment tool 99. It goes without saying that the mask body 5, the over-mask 15, and the sleeve 16 for the insertion part can be used in combination with the sleeve 17 for the treatment tool.

[0091] Fifth Embodiment As shown in FIG. 18, an operating part 92 of an endoscope 90 is housed in a sleeve (cover) 18 for the operating part.

[0092] The sleeve 18 is a tube made of, for example, polyethylene, similar to the sleeve 16 for the insertion portion. The sleeve 18 covers the operation portion 92 including the treatment tool insertion port H95 of the channel tube 95. That is, one end of the sleeve 18 is fixed to the distal end side of the universal cord 93, and the other end is fixed to the lower part of the operation portion 92 or the proximal end side of the insertion portion 91.

[0093] 19A, a sleeve 18A for the operating unit 92 has a recess H18A shaped to allow the hand 120 of a medical professional to insert therein between an opening O93 on the tip side of the universal cord and an opening O91 on the side of the insertion unit 91. The sleeve 18A is easier for medical professionals to operate than the sleeve 18.

[0094] There may simply be an opening O120 through which a medical professional's hand can be inserted, like a sleeve 18B for an operating portion shown in FIG. 19B.

[0095] The sleeve 18 can reduce the risk of infection to medical personnel due to operation of the operating unit 92. It goes without saying that the sleeve 18 can be used in combination with the mask body 5, the over-mask 15, the sleeve 16 for the insertion unit, and the sleeve 17 for the treatment tool. Furthermore, multiple sleeves may be connected and integrated. For example, a sleeve in which the sleeve 16 for the insertion unit and the sleeve 18 for the operating unit are integrated is also preferably used.

[0096] Endoscopy using a protective device including a sleeve is performed by a medical professional through the following steps in sequence.

[0097] (A) The insertion section sleeve 16 and the operation section sleeve 18 are attached to the insertion section 91 and the operation section 92, and the endoscope 90 is hung on a scope hanger. (B) The treatment tool sleeve 17 is attached to the treatment tool 99, and the treatment tool 99 is hung on the treatment tool hanger. (C) The insertion section sleeve 16 is attached to the mask body 5. Also, the treatment tool sleeve 17 is attached to the treatment tool insertion port H95. (D) The examination / treatment is performed. (E) The treatment tool sleeve 17 is removed from the treatment tool insertion port H95, and the treatment tool 99 is hung on the treatment tool hanger. (F) The insertion section sleeve 16 is removed from the mask body 5, and the endoscope 90 is hung on the scope hanger. (G) The endoscope 90 and treatment tool 99, with the sleeves 16, 17, and 18 still attached, are taken to a reprocessing room where ventilation and medical personnel's PPE (personal protective equipment) are in place. (H) In the reprocessing chamber, the sleeves 16, 17, and 18 are removed from the endoscope 90 and the treatment tool 99, and reprocessing begins.

[0098] Alternatively, the medical professional may perform the steps in the following order: (A) A sleeve 17 for the treatment tool is attached to the treatment tool 99, and the treatment tool 99 is hung on a treatment tool hanger. (B) The sleeve 16 for the insertion section, which has been attached to the mask body 5 in advance, is stretched and attached to the insertion section 91. The sleeve 17 for the treatment tool is also attached to the treatment tool insertion port H95. (C) The examination / treatment is performed. (D) The sleeve 16 for the insertion section is removed from the mask body 5, and the endoscope 90 is hung on the scope hanger. (E) The endoscope 90 and treatment tool 99 are taken to the reprocessing chamber with the sleeves 16 and 17 still attached. (F) In the reprocessing chamber, the sleeves 16 and 17 are removed from the endoscope 90 and treatment tool 99, and reprocessing begins. The sleeve 16 may be taken to the reprocessing chamber together with the mask body 5 without being removed from the mask body 5.

[0099] Sixth Embodiment 20, the main body is a mouthpiece 5C that is placed in the mouth of a subject 100. The first port 10 is provided at a position facing the mouth of the subject 100.

[0100] The mouthpiece 5C is provided with a second port 20 and a third port 30.

[0101] As shown in Figure 21, the mouthpiece 5C is preferably used together with a sleeve 16 for the insertion portion. In this case, the second port 20 and the third port 30 are disposed in the ring 16A of the sleeve 16 that fits with the ring 10A of the first port 10 of the mouthpiece 5C.

[0102] 22, it is more preferable that the mouthpiece 5C be used together with an over-mask 15B that covers the subject's head. That is, it goes without saying that the mask body 5, the over-mask 15, and the sleeve 16 for the insertion portion can be used together with the mouthpiece 5C.

[0103] Seventh Embodiment 23, the main body is a buttocks main body 5D that is attached to the buttocks of a subject 100. A first port 10 is provided at a position facing the anus of the subject.

[0104] The protector 1D is attached to pants 5D1 with an endoscope insertion opening. The pants 5D1 have rings made of elastic material such as rubber around the waist and both ankles of the subject 100, and the inside is sealed. The protector 1D is provided with a second port and a third port.

[0105] 23 is used together with a sleeve 16 for the insertion portion. Therefore, a second port and a third port may be provided in the sleeve 16. Furthermore, instead of being attached to pants 5D1, the protector 1D may be fixed directly with a string or the like to a position facing the subject's anus.

[0106] Although the endoscope 90 described in the above embodiment has a flexible insertion section 91, the endoscope of the present invention may have an inflexible rigid endoscope in which the insertion section 91 is the same as the tip section 91A.

[0107] Furthermore, it goes without saying that the configurations of the shutter, cap, connector, and port in the modified example of the first embodiment described with reference to FIGS. 4A to 6B can be similarly used in the other embodiments.

[0108] The following describes in more detail the configuration of the endoscope protective equipment (protective equipment for endoscopic medical treatment) of the present invention. Note that the endoscope protective equipment of each embodiment described below is similar to the protective equipment already described and has the same effects, so components with the same functions are given the same reference numerals and descriptions thereof are omitted.

[0109] Eighth Embodiment 24 includes an endoscope protective mask 1A, which is a protective tool for an endoscope, and a suction device 200. The mask 1A is worn on the face of a subject 100 and includes a mask body 5 that forms a substantially sealed space between the mask body 5 and the face. The mask body 5 includes a first port 10 into which an insertion section 91 of an endoscope 90 is inserted, a second port 20 through which outside air flows into the space, and a third port 30 that is connected to the suction device 200 via a tube 210 and through which aerosols generated by the subject 100 are sucked.

[0110] 25, the ring 10A of the first port 10 is covered with a rubber shutter 6 having a plurality of radially arranged first slits SL10. The first slits SL10 are connected by a first membrane 10S that is thinner than the thickness of the shutter 6.

[0111] When using the mask 1A, the operator (healthcare worker) 120 presses the mask 1A with a finger or the like to tear the first membrane 10S and open the shutter 6, after which the insertion portion 91 of the endoscope 90 is inserted into the first port 10. Compared to a shutter without the first membrane 10S, the shutter 6 with the first membrane 10S does not sag in the direction of gravity during storage. The outer diameter of the insertion portion 91 and the optimal position of the insertion portion 91 in the first port 10 differ depending on the approach method, whether oral or nasal. The mask 1A allows the operator 120 to freely determine the position and size at which the first membrane 10S is torn. This makes the mask 1A easy to use and improves the airtightness of the space it forms.

[0112] In order to prevent the first film 10S from being torn too much, it is preferable that the thickness of the central region of the shutter 6 is thinner than the thickness of the peripheral region.

[0113] The mask body 5 may be made of a transparent resin, but the transparent resin may discolor (become colored) when sterilized. By using a resin containing a blue colorant as the material for the mask body 5, discoloration due to sterilization is less noticeable.

[0114] The fourth port 40 disposed in the mask body 5 is a hole through which a tube such as an intubation tube is inserted. The fourth port 40 is in communication with the end face of the mask body 5 via a second slit SL40. The second slit SL40 is connected to the end face of the mask body 5 by a second membrane 40S that is thinner than the thickness of the end face of the mask body 5. The second membrane 40S is broken during use, but is effective not only in preventing leakage of aerosols and droplets but also in maintaining the shape of the mask body 5. The fourth port 40 may also be covered with a thin membrane that is broken during use.

[0115] As shown in Figures 26A and 26B, for example, a cylindrical connector 72A with a flange (brim) 72F that is disposed in the third port 30 has an outer peripheral surface 72SA that fits with the inner peripheral surface of the third port 30, and has a slit SL72 (recess) on which a thin membrane 72S is provided on part of the outer peripheral surface 72SA.

[0116] The connector 72A with the flange 72F can be easily attached to and detached from the mask body 5. Furthermore, the connector 72A preferably has a slit to make it easier to remove from the third port 30. However, a cylindrical connector 72A with a slit may lose its roundness during manufacturing. The connector 72A with a slit SL72 (recess) in which a thin membrane 72S is provided is easy to remove and has high roundness.

[0117] 26C to 26F show modified examples of the cap 73 shown in FIG. 5C. The cap 74 shown in FIG. 26C has a step 75 that abuts against the edge of the second port 20 when the cap 74 is inserted into the second port 20. This configuration allows the cap 74 to maintain an opening of a predetermined size even when inserted to the deepest depth. The shape of the notch (opening) of the cap 74 is not limited to a rectangle. By making it a trapezoid as shown in FIG. 26D, friction with the inner surface of the second port 20 can be reduced, improving the operability of attaching, detaching, and rotating the cap 74. Furthermore, as shown in FIGS. 26E and 26F, a portion of the opening near the flange 74F may be left intact, and the remaining portion may be made of a thin film 74S, similar to the connector 72A shown in FIG. 26B.

[0118] As already explained, the cap can be rotated so that the slits that are ventilation holes face away from the medical worker 120. A cap with a high degree of roundness can be rotated easily.

[0119] The second port 20, the third port 30, the fifth port 61, and the sixth port 62 have the same size and shape, and the cap or connector to be attached can be selected depending on the position of the suction device 200, the posture of the subject 100, etc. For example, the second port 20 may be connected to the suction device 200.

[0120] 27, the mask body 5 has holes H19 through which strings 19 are inserted to secure the mask body 5 to the face of the subject 100. The strings 19 are placed around the back of the head of the subject 100 and then both ends of the strings 19 are pulled, thereby attaching the mask body 5 to the face of the subject 100.

[0121] The inner diameter of the hole H19 is smaller than the outer diameter of the string 19, but the mask body 5 has a third slit SL19 extending from the hole H19. By pulling the string 19, the mask body 5 is fixed in a state where it is in close contact with the face, forming a substantially sealed space between the mask body 5 and the face.

[0122] As shown in Figures 28 and 29, a sleeve 16 (insertion section sleeve) having a cylindrical first sleeve 16B in which the insertion section 91 of the endoscope 90 is housed is fixed to the mask body 5. The sleeve 16 has a ring 16A and a hook 16C provided at one end of the first sleeve 16B. The ring 16A of the sleeve 16 fits into the ring 10A of the first port 10, thereby fixing the sleeve 16 to the mask body 5 without any gaps. Two hooks 16C are provided on the ring 16A at one end of the cylindrical sleeve 16B. The two hooks 16C engage with the ring-shaped protrusions of the ring 10A of the first port 10, thereby fixing the sleeve 16.

[0123] The mask body 5 and sleeve 16 are fixed by ring 10A and ring 16A, so that the sleeve 16 can be fixed at any rotation angle relative to the mask body 5. In addition, the two hooks 16C can be operated with just two fingers, so that the sleeve 16 is easy to put on and take off.

[0124] As shown in Figure 30, when pushing in the insertion section 91 of the endoscope 90, the operator 120 grasps the insertion section 91 together with the cylindrical sleeve 16B. By pushing in the insertion section 91, the sleeve 16B is folded in the vicinity of the mask. Therefore, an operation is performed to smooth out any wrinkles that have occurred in the sleeve 16B.

[0125] 31, when the insertion section 91 of the endoscope 90 is pulled out, the sleeve 16B is first folded in the vicinity of the mask, and then the insertion section 91 is pulled out.

[0126] Although not shown, a water-soluble medical lubricant is pre-applied to the insertion portion 91. As already described, the base end side of the sleeve 16B is fixed to the rear end portion of the insertion portion 91 or the lower portion of the operation portion 92 using tape or ribbon (see FIG. 14).

[0127] When removing the insertion portion 91 of the endoscope 90, the air inside the cylindrical sleeve 16B is squeezed out, causing the sleeve 16B to fold up near the mask. Then, as shown in Figures 32 and 33, the hook 16C is released, and the first sleeve 16 is removed from the mask body 5 together with the insertion portion 91.

[0128] Ninth Embodiment The endoscope protective equipment of this embodiment shown in FIG. 34 is a cover (sleeve for operation section) 18C that covers the operation section 92 of an endoscope 90.

[0129] The cover 18C is made by gluing two rectangular films together at two sides, i.e., a rectangular bag with openings on two sides.

[0130] A hook-and-loop fastener 18D, which is a fixing member, is disposed in the opening. After the operation section 92 of the endoscope 90 is housed, the hook-and-loop fastener 18D is closed, whereby the cover 18C is fixed in a state in which it covers the operation section 92.

[0131] As shown in Figure 35, each of the two films has an opening H18, which is a port through which the operator 120's hand is inserted. This allows the operator to insert their hand through whichever opening is more convenient for work, or to insert both hands through each opening. Also, the operation dial portion of the operation unit 92 may protrude from an opening H18 different from the opening H18 through which the operator's hand is inserted. Of course, only one of the two films may have an opening H18.

[0132] The opening H18 is inserted through the fourth slit SL18. Therefore, even if the opening H18 is small, it is easy to insert a hand, and the diffusion and contamination of droplets and aerosols can be reduced.

[0133] Tenth Embodiment The endoscope protective tool of this embodiment shown in FIGS. 36 to 39 is a third sleeve 17B for a treatment tool.

[0134] 36, the cylindrical third sleeve 17B is folded and sandwiched between two plates 17C, and then packed with, for example, a rubber band 17D. The cylindrical first sleeve 16 for the insertion portion is also packed in the same manner as the third sleeve 17B.

[0135] 37, the third sleeve 17B is inserted in a folded state up to the proximal side of the treatment tool 99. Then, the third sleeve 17B is extended to a position where it fully covers the distal end of the treatment tool 99. The proximal side of the third sleeve 17B is fixed to the treatment tool 99 using a ribbon 17E or the like.

[0136] An end of the third sleeve 17B is divided into two end faces 17S1 and 17S2 by a fifth slit SL17. A hook-and-loop fastener 17F, which is a fixing member for bonding the two end faces 17S1 and 17S2 together, is provided on the two end faces 17S1 and 17S2.

[0137] As shown in Figure 38, by rolling up the cover 18C covering the operating portion 92, the treatment instrument insertion port H95 is exposed, and then, with the third sleeve 17B folded so that the tip of the treatment instrument 99 is exposed, the treatment instrument 99 is inserted into the treatment instrument insertion port H95.

[0138] As shown in FIG. 39, two end surfaces 17S1 and 17S2 of the third sleeve 17B are attached together by a hook-and-loop fastener 17F with the operating portion 92 sandwiched therebetween.

[0139] Eleventh Embodiment 40 and 41 is a colonoscope pad 1DA having a buttocks main body 5DA to be worn on the buttocks of a subject 100. The buttocks main body 5DA has a second port 20 through which outside air flows into the space, and a third port 30 connected to a suction device 200 via a tube 210 and through which aerosol generated from the subject 100 is sucked in. The buttocks main body 5DA is fixed to the buttocks using a belt 19A.

[0140] The shutter 6 of the first port 10 into which the insertion section 91 of the endoscope 90 is inserted is opened when the operator 120 presses it with a finger or the like during use, similar to the shutter 6 shown in Fig. 25. Although not shown, a first sleeve 16 is fixed to the buttocks main body 5DA, similar to Fig. 28.

[0141] The present invention is not limited to the above-described embodiments, and various modifications, combinations, and applications are possible within the scope of the invention.

[0142] This application is a grandchild application, with Japanese Patent Application No. 2022-534136 as the parent application and Japanese Patent Application No. 2024-038219 as the child application, and the above disclosures are incorporated herein by reference in the specification and claims of this application. [Explanation of symbols]

[0143] 1, 1A to 1D: Protective equipment for endoscopes 5. Main unit 6. Shutter 10. First port 15. Overmask 16. Insertion sleeve 17. Sleeve for treatment tool 18. Sleeve for operating unit 20...Second port 30...Third port 40...Fourth port 61. Fifth Port 62: Sixth port 71~74···Cap 72A Connector 72F, 74F flange 75...Step 90 Endoscope 91 Insertion section 91A...Tip 92...Operation unit 93···Universal Code 95 Channel Tube 96···Stop 99...Treatment tools 100 subjects 120 Medical personnel (operators) 200...Suction device

Claims

1. The mask includes a mask body and a fixing member. the fixing member holds the mask body so as to be fixed to the head of the subject; the mask body has a first port, a second port, and a third port; the second port and the third port have the same size and shape; an insertion portion of an endoscope is inserted into the first port; the second port and the third port are disposed on either side of the first port, which is located at the position of the subject's mouth; Air in the internal space of the mask body is sucked through a suction port, which is either the second port or the third port, An endoscope protective device, characterized in that outside air flows into a substantially sealed space inside the mask body through an inlet port, which is one of the second port and the third port and is not the suction port.

2. the mask body further includes a fourth port, a fifth port, and a sixth port, which are holes through which tubes are inserted; the second port, the third port, the fifth port, and the sixth port have the same size and shape; the second port and the fifth port, and the third port and the sixth port are disposed on the left and right sides of the first port, Air in the internal space of the mask body is sucked through the suction port, which is any one of the second port, the third port, the fifth port, and the sixth port, 2. The protective equipment for an endoscope according to claim 1, wherein outside air flows into the substantially sealed space inside the mask body through any one of the inlet ports, which is not the suction port, among the second port, the third port, the fifth port, and the sixth port.

3. a shutter covering the first port; the shutter is made of rubber having a plurality of first slits arranged radially, 2. The protective equipment for an endoscope according to claim 1, wherein the first slit is connected by a first film that is thinner than the thickness of the shutter.

4. 2. The protective equipment for an endoscope according to claim 1, wherein the material of the mask body is a resin containing a blue colorant.

5. further comprising a connector disposed in the second port or the third port; 2. The endoscope protective tool according to claim 1, wherein the connector has an outer circumferential surface that fits with an inner circumferential surface of the second port or the third port, and a recess is provided in a part of the outer circumferential surface.

6. 2. The protective equipment for an endoscope according to claim 1, wherein the mask body has a hole, through which the string serving as the fixing member is inserted, the hole having an inner diameter smaller than an outer diameter of the string, and a slit extending from the hole.

7. The endoscope has a protective device and a suction device, The endoscope protective equipment includes a mask body and a fixing member, the fixing member holds the mask body so as to be fixed to the head of the subject; the mask body has a first port, a second port, and a third port; the second port and the third port have the same size and shape; an insertion portion of an endoscope is inserted into the first port; the second port and the third port are disposed on either side of the first port, which is located at the position of the subject's mouth; Air in the internal space of the mask body is sucked through a suction port, which is either the second port or the third port, outside air flows into a substantially sealed space inside the mask body from an inlet port that is not the suction port among the second port and the third port, The suction device is connected to the suction port.

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