Protective device 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 that medical staff will become infected by droplets, aerosols, etc. generated by the subjects. For this reason, medical staff prevent infection by using high-performance masks, face guards, medical gowns, gloves, etc.

[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 the 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 endoscope protective equipment according to an embodiment includes a mask body and a fixing member, 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, the second port and the third port being of 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 and the third port that is not the suction port.

[0008] An embodiment of an endoscope protection system includes an endoscope protective equipment 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 a subject, the mask body has a first port, a second port, and a third port, 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 which is located at the position of the subject's mouth, 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, outside air flows into a substantially sealed space inside the mask body through an inlet port of the second port and the third port which is not the suction port, and the suction device is connected to the suction port. Effect of the Invention

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

[0010] [Figure 1]FIG. 1 is a side view of an endoscope protective equipment according to a first embodiment. [Diagram 2] FIG. 1 is a front view of an endoscope protective equipment according to a first embodiment. [Diagram 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 a perspective exploded view of a port of the endoscope protective equipment of the first embodiment. [Figure 5B] FIG. 2 is a perspective exploded view of a port of the endoscope protective equipment of the first embodiment. [Figure 5C] FIG. 2 is a perspective exploded 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 a port arrangement of the endoscope protective equipment of the first embodiment. [Figure 8] FIG. 4 is a front view of a fourth port of the endoscope protective equipment of the first embodiment. [Figure 9] FIG. 4 is a front view of a modified example of the endoscope protective equipment of the first embodiment. [Figure 10] FIG. 11 is a front view of an endoscope protective equipment according to a second embodiment. [Figure 11] FIG. 11 is a side view of an endoscope protective equipment according to a second embodiment. [Figure 12] FIG. 11 is a side view of an endoscope protective equipment according to a third embodiment. [Figure 13] FIG. 11 is an exploded perspective view of an endoscope protective equipment according to a third embodiment. [Figure 14] FIG. 11 is a side view of an endoscope protective equipment according to a third embodiment. [Figure 15] FIG. 11 is a side view of an endoscope protective equipment according to a third embodiment. [Figure 16] FIG. 11 is a perspective view of an endoscope protective equipment according to a fourth embodiment. [Figure 17] FIG. 11 is a perspective view of an endoscope protective equipment according to a fourth embodiment. [Figure 18] FIG. 13 is a perspective view of an endoscope protective equipment according to a fifth embodiment. [Figure 19A] FIG. 13 is a perspective view of an endoscope protective equipment according to a fifth embodiment. [Figure 19B] FIG. 13 is a perspective view of an endoscope protective equipment according to a fifth embodiment. [Figure 20] FIG. 13 is a cross-sectional view of an endoscope protective equipment according to a sixth embodiment. [Figure 21] FIG. 13 is an exploded perspective view of an endoscope protective equipment according to a sixth embodiment. [Figure 22] FIG. 13 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. [Diagram 25] FIG. 13 is a perspective view of an endoscope protective equipment according to an eighth embodiment. [Figure 26A] FIG. 23 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. 23 is a cross-sectional view of a cap of an endoscope protective equipment according to an eighth embodiment. [Figure 26D] FIG. 23 is a cross-sectional view of a cap of an endoscope protective equipment according to an eighth embodiment. [Figure 26E] FIG. 23 is a cross-sectional view of a cap of an endoscope protective equipment according to an eighth embodiment. [Figure 26F] FIG. 23 is a cross-sectional view of a cap of an endoscope protective equipment according to an eighth embodiment. [Figure 27] 13A to 13C are views for explaining a method of using the endoscope protective equipment of the eighth embodiment. [Figure 28] 13A to 13C are views for explaining a method of using the endoscope protective equipment of the eighth embodiment. [Figure 29] 13A to 13C are views for explaining a method of using the endoscope protective equipment of the eighth embodiment. [Diagram 30] 13A to 13C are views for explaining a method of using the endoscope protective equipment of the eighth embodiment. [Diagram 31] 13A to 13C are views for explaining a method of using the endoscope protective equipment of the eighth embodiment. [Diagram 32] 13A to 13C are views for explaining a method of using the endoscope protective equipment of the eighth embodiment. [Diagram 33] 13A to 13C are views for explaining a method of using the endoscope protective equipment of the eighth embodiment. [Diagram 34] 13A to 13C are diagrams illustrating a method of using the endoscope protective equipment of the ninth embodiment. [Diagram 35] 13A to 13C are diagrams illustrating a method of using the endoscope protective equipment of the ninth embodiment. [Diagram 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. [Diagram 40] FIG. 23 is a perspective view of an endoscope protective equipment according to an eleventh embodiment. [Diagram 41] 13A to 13C are diagrams illustrating an endoscope protection system according to an eleventh embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] First Embodiment A protective equipment for endoscopes (hereinafter, sometimes referred to as a "protective equipment" or "protective mask for endoscopes") 1 of a first embodiment will be described with reference to Figs. 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, and the thickness ratio of each part, are different from the actual ones. The drawings may also include parts with different dimensional relationships and ratios. Illustration of some components and assignment of symbols 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 includes a mask body 5 that is worn by a subject 100 and forms a substantially sealed space between the mask body and the body. The mask body 5 is in close contact with the face so as to cover the nose and mouth. The mask body 5 is fixed to the head using strings 19. The strings 19 may be hung around the ears, or may be hung not only around the back of the head but also around the top of the head, and may be made of an elastic material. The mask body 5 may 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 improve 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 on the assumption that the subject 100 will be wearing a mouthpiece.

[0015] The protective device 1 has 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 provided on a ring 10A to prevent splashes and aerosols from leaking out during insertion of the endoscope.

[0017] The shutter 6 of the first port 10 is composed of multiple tongue pieces 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 constituting the outer circumferential surface of the insertion part 91 and has elasticity so as not to damage the outer circumferential surface of the insertion part 91, for example, 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 circumferential surface of the insertion portion 91 and are elastically deformed.

[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 uses 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 unlikely to be released to the surroundings. Therefore, the protective equipment 1 can reduce the risk of infection for medical workers. The outside air is the air in the examination room / treatment room, but it may also be oxygen shared from a gas cylinder or the like.

[0021] Furthermore, the protective equipment 1 is provided 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 arranged 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. scattered 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 air in the internal space of the mask body 5 is sucked in.

[0023] Furthermore, the protector 1 is provided with a fourth port 40 through which a tube is inserted. The fourth port 40 of the protector 1 is a cutout 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 cutout of the cap, which will be described later, are also made large enough to allow the cannula to be inserted.

[0024] In addition, in the protective equipment 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, into which outside air flows in the same way as 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 having an opening at a tip portion 91A and through which the insertion portion 91 is inserted. A plug 96 is provided at a treatment tool insertion port H95, which is an opening on the base end side of the channel tube 95, to close the opening.

[0027] <How to operate the endoscope protective equipment> The operation of the protective equipment 1 will now be briefly described with reference to the flow chart 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 polyvinyl chloride or silicone rubber that can be securely attached to the face and ensures airtightness.

[0030] In order to fix 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 malleable material, which is a freely bendable material that can be bent to fit the shape of the subject's nose.

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

[0032] The first port 10 includes a circular ring (cylinder) 10A disposed in the opening at the center 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 mechanical strength is ensured by the ring 10A and the shape is maintained. 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 portion 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 protective equipment 1, during the period from insertion to removal, air in the space is sucked in through the third port 30, and outside air flows into the space through the second port 20.

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

[0038] The examination / treatment using the above-mentioned endoscope protective equipment 1 will be described 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 the suction tube 210. (D) While the examination / treatment is being performed using the endoscope, the internal space of 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 with the mask body 5 still attached. Even during the move, 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 when the examination / treatment is completed.

[0040] <Modification of the first port> The shutter 6 of the first port 10 for preventing deterioration of the sealing degree of the approximately sealed space of the protective equipment 1 is not limited to the so-called chrysanthemum-shaped rubber having radial slits SL. The shutter 6 shown in FIG. 4A and FIG. 4B has a straight slit SL. The shutter 6 shown in FIG. 4C has an opening H11 for an oral endoscope, a cover 11A closing the opening H11, an opening H12 for a nasal endoscope, and a cover 12A closing the opening H12. The shutter 6 shown in FIG. 4D and FIG. 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 the 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 ingestion, it is preferable that one opening is provided at a position facing the mouth and nose.

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

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

[0044] For example, the aperture size can be adjusted by configuring the shutter 6 to have 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, air-tight 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 having holes at 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, is adjustable.

[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 cheek of the subject, the second port 20 may be blocked, preventing sufficient ventilation. A port with a wider bottom surface 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, removable from the port, to which a suction tube or various luer connectors may be joined.

[0050] The second port 20 shown in FIG. 5B has an opening W20 on the side and a cylindrical cap 71A that is a plug 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 cap 71A is not pushed deep into the hole H20, so it does not protrude from the inner surface of the mask body 5. In addition, the cap 71A does not abut against the orifice plate described later, so that the hole in the orifice plate is not blocked by the cap 71A. Furthermore, since the second port 20 has an opening on the side, direct droplet diffusion can be prevented. 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 an abutment portion 73A with a slit and a cylindrical abutment portion 73B. The flow rate can be adjusted by adjusting the depth to which the abutment portion 73A is pressed into the hole H20. The cap 73 can be rotated to orient the slit, which is a ventilation port, in a direction away from the medical worker 120, thereby enabling ventilation in the direction away from the medical worker 120. It is preferable that the brim has a mark (such as an arrow) indicating the direction of the slit. In addition, the flow path can be blocked by pressing the abutment portion 73B into the hole H20.

[0052] A second port 20 having an opening W20 on the side shown in Fig. 5B may be combined with a cap 73 having a notch shown in Fig. 5C. By changing the overlap state 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] Also, the second port 20 shown in Fig. 6A has an orifice plate with multiple circular holes H20A within the hole H20. The second port 20 shown in Fig. 6B has an orifice plate with multiple elliptical holes H20A within the hole H20. Also, the orifice plate may have only one hole large enough to allow the 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 equipment 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 mask body 5 in the internal space. In the case where the mask body 5 has the second ports 20 in the upper right and the mask body 5 has the third port 30 in the lower left as shown in Fig. 8, air flows from the upper right to the lower left in 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 equipment 1 are appropriately set depending on the application. For example, assuming use in the otolaryngology field or the digestive field, the third port 30 may be provided only on 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 gear 1 for a bronchoscope having a small diameter insertion portion 91, the first port 10 may have a smaller opening than the second port. The protective gear 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, the mask may cover only the upper half of the face to secure a surgical space. That is, as shown in Fig. 9, the mask body 5 is shaped by cutting the lower part of the mask body 5 in Fig. 2, and a gap is formed 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 staff. As shown in Fig. 9, the suction tube 210 may be passed through the mask body 5 so that the 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 their 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. For example, the overmask 15 made of a polyethylene film is fixed to the outer periphery of the mask body 5 by, for example, welding, and is integrated with the mask body 5. After putting on the mask body 5, the subject 100 puts the overmask 15 on his / her head and fixes the opening of the overmask 15 around the neck by tying it with a string or the like.

[0068] 11 has an opening, for example, with 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 overmask 15A.

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

[0070] Some subjects 100 may feel scared when wearing the overmask. For this reason, the overmask may also have an opening at the top of the head. With such an overmask, the overmask is left uncovered until the start of the test, and the overmask can be extended to the top of the head and the opening tied on top of the head just before the start of the test.

[0071] <Third embodiment> The endoscope protective equipment 1B of this embodiment shown in FIG. 12 further includes an insertion portion sleeve 16 that is disposed in the first port 10 and receives the insertion portion 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 part 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, and is fixed to the mask body 5 without any gaps.

[0073] The opening of the sleeve 16 on the operating section 92 side is fixed without any gaps to the rear end of the insertion section 91 or the lower part of the operating section 92 using, for example, tape 16C. When 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 tip 91A of the insertion portion 91 is inserted to the deepest part of the body, and then is withdrawn little by little while performing observation. However, there is a risk that viruses and the like are 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 portion 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 grip and operate the insertion portion 91. The sleeve 16B is also made of a thin material so as not to be bulky. 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, in a bellows shape. Then, when the insertion portion 91 is removed, the sleeve 16B returns to a 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 communicates with the first port 10, and is thereby sealed in 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. For example, when the mask body 5 is used together with the overmask 15, the insertion part 91 is sealed together with the mask body 5 by tying the opening on the neck side of the overmask 15 that has been removed from the subject (FIG. 15).

[0080] The sleeve 16 for the insertion part allows medical personnel to complete examinations and processing without touching the insertion part 91. In addition, the sleeve 16 for the insertion part can reduce the risk of diffusion during transportation to and in a reprocessing room where sterilization and other processing are performed.

[0081] The insertion part 91 after use may be sealed using a bag instead of the overmask 15. Also, 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] Conventional endoscope sleeves and the like are used to protect a clean space inside the sleeve from a contaminated space outside the sleeve, whereas the sleeve of the present invention is used to accommodate a contaminated member in a substantially sealed state.

[0083] The shutter 6 may be provided on the ring 16A of the sleeve 16, instead of 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, instead of on the mask body 5.

[0084] The ring 16A may be conical in shape, the diameter of which decreases with distance from the connection portion with the ring 10A of the first port 10, or may be a vertically long, horizontally long, or cross-shaped funnel. In the sleeve 16 having the ring 16A of the above shape, the bellows-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. In addition, the sleeve 16B of the above-mentioned sleeve 16 can be easily pulled out in a cylindrical shape when in use, from the folded state before use.

[0085] <Fourth embodiment> 16 has a channel tube 95 extending from a tip 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 operation 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, into a bellows 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 can reduce the risk of infection for medical personnel caused by operating the treatment tool 99. It goes without saying that the mask body 5, the overmask 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 operation section 92 of an endoscope 90 is housed in a sleeve (cover) 18 for the operation section.

[0092] The sleeve 18 is a tube made of, for example, polyethylene, like 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 tip side of the universal cord 93, and the other end is fixed to the lower part of the operation portion 92 or the base end side of the insertion portion 91.

[0093] 19A, a recess H18A having a shape into which a hand 120 of a medical worker who operates the operating unit 92 is inserted is provided 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 workers 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 caused by operating the operation unit 92. It goes without saying that the sleeve 18 can be used in combination with the mask body 5, the overmask 15, the sleeve 16 for the insertion unit, and the sleeve 17 for the treatment tool. In addition, a plurality of 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 operation unit are integrated is also preferably used.

[0096] Endoscopic examination using protective equipment including a sleeve is performed by a medical professional in the following order.

[0097] (A) The sleeve 16 for the insertion part and the sleeve 18 for the operation part are attached to the insertion part 91 and the operation part 92, and the endoscope 90 is hung on the scope hanger. (B) The sleeve 17 for the treatment tool is attached to the treatment tool 99, and the treatment tool 99 is hung on the treatment tool hanger. (C) The sleeve 16 for the insertion part is attached to the mask body 5. Also, the sleeve 17 for the treatment tool is attached to the treatment tool insertion port H95. (D) The examination / treatment is performed. (E) The sleeve 17 for the treatment tool is removed from the treatment tool insertion port H95, and the treatment tool 99 is hung on the treatment tool hanger. (F) The sleeve 16 for the insertion part is removed from the mask body 5, and the endoscope 90 is hung on the scope hanger. (G) The endoscope 90 and the 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) The sleeve 17 for the treatment tool is attached to the treatment tool 99, and the treatment tool 99 is hung on the treatment tool hanger. (B) The sleeve 16 for the insertion part, which is attached to the mask body 5 in advance, is stretched and attached to the insertion part 91. Also, the sleeve 17 for the treatment tool is attached to the treatment tool insertion port H95. (C) The examination / treatment is performed. (D) The sleeve 16 for the insertion part is removed from the mask body 5, and the endoscope 90 is hung on the scope hanger. (E) The endoscope 90 and the 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 the treatment tool 99, and reprocessing is started. 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 to be held in the mouth of a subject. 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 Fig. 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] Moreover, as shown in Fig. 22, it is more preferable that the mouthpiece 5C is used together with an overmask 15B that covers the subject's head. That is, it goes without saying that the mask body 5, the overmask 15, and the sleeve 16 for the insertion part 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. The first port 10 is provided at a position facing the anus of the subject.

[0104] The protective equipment 1D is attached to pants 5D1 with an endoscope insertion port. 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 protective equipment 1D is provided with a second port and a third port.

[0105] 23 is used together with a sleeve 16 for the insertion part. For this reason, a second port and a third port may be provided in the sleeve 16. Moreover, instead of being attached to the 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 portion 91 which is a soft endoscope, the endoscope of the present invention may have an inflexible rigid endoscope in which the insertion portion 91 is the same as the tip portion 91A.

[0107] Moreover, 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 The endoscope protection system 2 of this embodiment shown in Fig. 24 includes an endoscope protective mask 1A, which is a protective tool for an endoscope, and a suction device 200. The mask 1A includes a mask body 5 that is worn on the face of a subject 100 and forms a substantially sealed space between the mask and the face. The mask body 5 includes a first port 10 into which an insertion portion 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 aerosol generated from the subject 100 is sucked in.

[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 film 10S having a thickness smaller than that of the shutter 6.

[0111] When using the mask 1A, the operator (medical worker) 120 presses the mask 1A with a finger or the like to break the first membrane 10S and open the shutter 6, and then 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 having 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 arbitrarily determine the position and size at which the first membrane 10S is broken. Therefore, the mask 1A is easy to operate and can improve the airtightness of the space it forms.

[0112] In order to prevent the first film 10S from being torn too deeply, 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 not 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 communicates 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 through a second membrane 40S having a thickness 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) in which a thin membrane 72S is provided on a portion 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, the 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 a high roundness.

[0117] 26C to 26F are 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. With this configuration, the cap 74 can secure 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, and by making it a trapezoid as shown in FIG. 26D, the friction with the inner circumferential surface of the second port 20 can be reduced to improve the operability of attaching / detaching and rotating the cap 74. Also, as shown in FIGS. 26E and 26F, the opening on the side close to the flange 74F may be partially left, and the remaining part 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 in a direction away from the medical worker 120. A cap with a high degree of roundness can be easily rotated.

[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 a 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 the strings 19 are inserted to secure the mask body 5 to the face of the subject 100. The strings 19 are hung around the back of the head of the subject 100, and then the mask body 5 is attached to the face of the subject 100 by pulling both ends of the strings 19.

[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 Figs. 28 and 29, a sleeve 16 (sleeve for insertion portion) having a cylindrical first sleeve 16B in which an insertion portion 91 of an 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 being fixed 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 the sleeve 16 are fixed by the ring 10A and the ring 16A, so that the sleeve 16 can be fixed at any rotation angle with respect 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 insertion section 91 is gripped by the operator 120 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, the task of smoothing out the wrinkles that have occurred in the sleeve 16B is performed.

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

[0126] Although not shown, a water-soluble medical lubricant is applied in advance to the insertion part 91. As already described, the base end side of the sleeve 16B is fixed to the rear end part of the insertion part 91 or the lower part of the operation part 92 using a 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 and the sleeve 16B is folded up near the mask. Then, as shown in Figures 32 and 33, the first sleeve 16 is removed from the mask body 5 together with the insertion portion 91 by undoing the hook 16C.

[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. As shown in FIG.

[0129] The cover 18C is formed by gluing two rectangular films together at two sides thereof. In other words, the cover 18C is a rectangular bag with two 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 Fig. 35, each of the two films has an opening H18 which is a port through which the hand of the operator 120 is inserted. This allows the operator to insert his / her hand through whichever opening provides better workability, or to insert both hands through each opening. Also, the operation dial portion of the operation unit 92 may protrude from an opening H18 other than the opening H18 through which the hand is inserted. Of course, only one of the two films may have an opening H18.

[0132] The opening H18 is inserted into 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 is 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 stretched to a position where it fully covers the tip 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 FIG. 38, the cover 18C covering the operating portion 92 is rolled up to expose the treatment instrument insertion port H95, and the treatment instrument 99 is inserted into the treatment instrument insertion port H95 with the third sleeve 17B folded in so that the tip of the treatment instrument 99 is exposed.

[0138] As shown in FIG. 39, two end faces 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> The endoscope protective equipment of this embodiment shown in Figures 40 and 41 is a large intestine endoscope pad 1DA having a buttocks main body 5DA to be attached to the buttocks of a subject 100. The buttocks main body 5DA is equipped with a second port 20 through which outside air flows into the space, and a third port 30 that is 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 portion 91 of the endoscope 90 is inserted is opened when the operator 120 presses it with a finger or the like during use, in the same manner as the shutter 6 shown in Fig. 25. Although not shown, the first sleeve 16 is fixed to the buttocks main body 5DA in the same manner as in Fig. 28.

[0141] The present invention is not limited to the above-described embodiments, and various modifications, combinations, and applications are possible without departing from the spirit and 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~1D: Protective equipment for endoscopes 5. Main unit 6. Shutter 10... First port 15. Overmask 16 Insertion sleeve 17...Treatment tool sleeve 18···Operation sleeve 20...Second port 30: Third port 40: 4th port 61... 5th port 62: 6th port 71~74···Cap 72A···Connector 72F, 74F... Flanges 75···Step 90 Endoscope 91 Insertion part 91A...Tip 92...Operation unit 93... Universal Code 95···Channel Tube 96... Stopper 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 subject's head, the mask body having 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 the left and right sides of the first port, the first port being located at the position of the subject's mouth; Air in the internal space of the mask body is sucked in 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 a tube is 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 in through any one of the suction ports, which are the second port, the third port, the fifth port, and the sixth port; The protective device for an endoscope according to claim 1, characterized in that outside air flows into a substantially sealed space inside the mask body from any of the inlet ports among the second port, the third port, the fifth port, and the sixth port that is not the suction 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 having a thickness thinner than that 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 coloring agent.

5. Further comprising a connector disposed in the second port or the third port, 2. The endoscope protective device according to claim 1, wherein the connector has an outer circumferential surface that mates with an inner circumferential surface of the second port or the third port, and a recess is provided in a portion of the outer circumferential surface.

6. The protective equipment for an endoscope according to claim 1, characterized in that 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 subject's head, the mask body having 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 the left and right sides of the first port, the first port being located at the position of the subject's mouth; Air in the internal space of the mask body is sucked in 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 other than the suction port among the second port and the third port, The suction device is connected to the suction port.

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