Mask

Abstract

To provide a mask.SOLUTION: A mask 1 according to an embodiment comprises: a body part 10 which is formed from sheet-like surface parts 101 and 102, and a sheet-like rear surface part 103 superposed on the surface parts to absorb emission from the mouth and / or nose of a wearer, and can cover the face of the wearer by switching between a first coating state and a second coating state; a support part 20 which is attached to the body part and supports the body part on the face of the wearer; and a through hole 50 which is formed to penetrate through the body part, arranged at a position corresponding to the nose of the wearer in the first coating state, arranged at a position corresponding to the mouth of the wearer in the second coating state, and passes through a device to be inserted into the body of the wearer. Since the mask 1 prevents spread of emission of a subject who gets an endoscopic examination and the rear surface part 103 absorbs the emission, the emission hardly touches the skin and the wearing feeling is good.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a mask. More specifically, the present invention relates to a mask worn when using a medical device inserted into the body from the mouth or nose.

Background Art

[0002] Masks are used to cover the nose and mouth of the face to prevent diseases such as colds and influenza, and are also used to prevent infection to others. In addition, patients with hay fever, etc. use masks to prevent pollen from entering the nose and mouth. In recent years, due to the spread of the novel coronavirus, many people have been forced to wear masks every day. Under such circumstances, in hospitals, there is a need for an endoscopy mask that can be used by subjects during endoscopy to prevent the spread of droplets even during the examination. The same applies when using a medical device inserted into the body from the nose or mouth, not limited to endoscopy.

[0003] For example, there is a known technology of a disposable endoscopy mask that can fundamentally prevent the spread of droplets due to the pharyngeal reflex or sneezing of a subject during endoscopy, protect the operator, and prevent contamination of the examination room (see, for example, Patent Document 1).

[0004] However, the endoscopy mask shown in Patent Document 1 has a problem that the material is thin and has a limit in hygroscopicity, so the filter piece adheres to the subject's cheek and jaw in a wet state, and the wearing comfort is not good.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] This invention is based on the aforementioned social and technological background and aims to achieve the following objectives. The objective of this invention is to provide a mask that prevents the spread of excretions expelled by the wearer (subject) when using medical devices inserted into the body through the nose or mouth, while also being comfortable to wear. [Means for solving the problem]

[0007] To achieve the above objective, the present invention employs the following means. (1) The mask according to claim 1 is characterized by comprising: a main body 10 formed from sheet-like surface portions 101, 102 and a sheet-like back portion 103 superimposed on the surface portion to absorb excrement from the wearer's mouth and / or nose, and capable of switching between a first covering state and a second covering state to cover the wearer's face; a support portion 20 attached to the main body portion to support the main body portion on the wearer's face; and a through hole 50 formed to penetrate the main body portion, positioned at a location corresponding to the wearer's nose in the first covering state and at a location corresponding to the wearer's mouth in the first covering state, through which a device to be inserted into the wearer's body passes. (2) The mask of claim 2 is the same as that of claim 1, and is characterized by comprising marks 60 and 70 formed on the main body that indicate the orientation of the main body to the first covered state and / or the second covered state. (3) The mask of claim 3 is the same as claim 1 or 2, and is characterized by comprising: an edge portion 30 that constitutes a part of the main body and is in contact with the face and covers the face in the portion around the main body; an inner portion 40 that constitutes a part of the main body and is away from the face and covers the face in the portion inside the edge; and a restricting portion formed between the edge portion and the inner portion that restricts the movement of waste absorbed by the inner portion to the edge portion. (4) The mask of claim 4 is the same as that of claim 3, wherein the main body is formed symmetrically with respect to a virtual plane of symmetry VS, and the through hole is formed at a position where the inner part and the virtual plane of symmetry intersect. (5) The mask of claim 5 is any of claims 1 to 4 and is characterized by comprising a transparent portion 80 arranged around the through hole and formed to be transparent or semi-transparent in whole or in part. (6) The mask of claim 6 is any of claims 1 to 5 and is characterized by comprising a constricting portion 90 arranged around the through hole and narrowing the diameter of the through hole. [Effects of the Invention]

[0008] As described above, the mask of the present invention prevents contamination of the examination environment by suppressing the diffusion of excretions expelled by the wearer when using medical devices inserted into the body through the nose or mouth, while also providing a comfortable fit. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a side view of mask 1. [Figure 2] Figure 2 is an external view showing mask 1 in an unfolded state. [Figure 3] Figure 3 is an external view showing mask 1 before assembly. [Figure 4] Figure 4 is a cross-sectional view of mask 1. [Figure 5] Figure 5 shows a subject undergoing an endoscopic examination wearing mask 1. [Figure 6] Figure 6 is a side view of mask 1. [Modes for carrying out the invention]

[0010] (1) Outline of the Embodiment The mask 1 of this embodiment is formed from a sheet-like surface portion 101, 102 and a sheet-like back portion 103 that is superimposed on the surface portion and absorbs excrement from the wearer's mouth and / or nose, and includes a main body portion 10 that can switch between a first covering state and a second covering state to cover the wearer's face, a support portion 20 attached to the main body portion that supports the main body portion on the wearer's face, and a through hole 50 formed to penetrate the main body portion, positioned at a location corresponding to the wearer's nose in the first covering state and at a location corresponding to the wearer's mouth in the second covering state, and for passing through a device to be inserted into the wearer's body. Mask 1 prevents contamination of the examination environment by suppressing the spread of waste from subjects undergoing endoscopic examinations, and the back surface 103 absorbs the waste, making it comfortable to wear as the waste is less likely to come into contact with the skin.

[0011] (2) Details of the embodiment [First Embodiment] The first embodiment will be described in detail with reference to the drawings. Figure 1(a) is a left side view of the mask 1 when a subject undergoing transnasal endoscopy is wearing the mask 1, and Figure 1(b) is a left side view of the mask 1 when a subject undergoing oral endoscopy is wearing the mask 1. Figure 2(a) is a front view showing the mask 1 in an unfolded state, and Figure 2(b) is a perspective view showing the mask 1 in an unfolded state. Figure 3(a) is an external view showing the front side of the mask 1 before assembly, and Figure 3(b) is an external view showing the back side of the mask 1 before assembly. Figure 4 is an enlarged end view showing the state of the end face obtained by cutting Figure 3(a) along the α-α line.

[0012] [Mask 1] The mask 1 in the first embodiment is used to cover the nose and mouth of a subject undergoing an endoscopic examination, etc., and to prevent the spread of droplets. As shown in Figure 1, the mask 1 is composed of components such as a main body 10 and a support part 20. The main body 10 and the support part 20 that make up the mask 1 are attached by welding at a predetermined pressure and temperature. Depending on the type of endoscope used on the subject and the position of the endoscope used on the subject, the orientation of the main body 10 that covers the face can be changed, and the through-holes 50 can be positioned at different locations on the face.

[0013] The mask 1 can be worn by switching the main body portion 10 between a first covering state (see Fig. 5(a)) and a second covering state (see Fig. 5(a)) according to the position where the through hole 50 is disposed on the face. As shown in Fig. 1(a), in the first covering state, the face is covered by the main body portion 10 such that the first leg 13 and the mark 60 are disposed on the upper side, and the through hole 50 is disposed at a position corresponding to the nose of the subject, and the subject is wearing the mask 1. As shown in Fig. 1(b), in the second covering state, the face is covered by the main body portion 10 such that the second leg 14 and the mark 70 of the mask 1 are disposed on the upper side, and the through hole 50 is disposed at a position corresponding to the mouth of the subject, and the subject is wearing the mask 1. The mask 1 is designed to be able to cover the nose and mouth of the subject in either the first covering state or the second covering state.

[0014] 〔Main body portion 10〕 As shown in Fig. 1, the main body portion 10 is a member that covers the nose and mouth of the wearer's face. As shown in Fig. 1, when observed from the side, the main body portion 10 is formed in a substantially trapezoidal shape. The substantially trapezoidal shape of the main body portion 10 is defined by a straight upper base 11, an arc-shaped lower base 12 that protrudes outward, a first leg 13 that connects the upper base 11 and the lower base 12 on the upper side, and a second leg 14 that connects the upper base 11 and the lower base 12 on the lower side. The support portion 20 is attached to the lower base 12 side of the main body portion 10, and the through hole 50 is formed on the upper base 11 side.

[0015] As shown in Fig. 2(a), when observed from the front, the main body portion 10 is formed in a substantially elliptical shape, and as shown in Fig. 2(b), it is formed symmetrically about the virtual symmetry plane (VS). The elliptical shape of the main body portion 10 is formed so as to pass through both ends of the virtual minor axis YL extending in the vertical direction and both ends of the virtual major axis XL extending in the horizontal direction. The elliptical shape of the main body portion 10 is formed such that the virtual major axis XL is longer than the virtual minor axis YL. As shown in Fig. 2, the lower base 12 shown in Fig. 1 is a curve that forms the elliptical shape of the main body portion 10 when observed from the front.

[0016] As shown in FIG. 2, the upper base 11, the first leg 13, and the second leg 14 shown in FIG. 1 are arranged on the same axis when observed from the front and are arranged to pass through the virtual minor axis YL. As shown in FIG. 2(b), the virtual minor axis YL, the upper base 11, the first leg 13, and the second leg 14 shown in FIG. 1 are arranged on the virtual symmetry plane VS which is the same plane. The main body 10 is formed in a substantially left-right symmetric three-dimensional shape with respect to the virtual symmetry plane VS. The main body 10 formed in a three-dimensional shape has an edge 30 on the lower base 12 side that contacts the wearer's face and covers the face. The main body 10 formed in a three-dimensional shape has an inner part 40 on the upper base 11 side that is separated from the wearer's face and covers the face.

[0017] 〔Support part 20〕 The support part 20 is a member that is attached to the main body 10 and supports the main body 10 on the wearer's face. As shown in FIG. 2(a), the support part 20 is a string-like member such as a string or rubber that is attached to both left and right ends of the main body 10. The support part 20 is formed in a ring shape so that it can be hung on the ears. The support part 20 in this example is attached to the first surface part 101 side of the main body 10, but it may be attached to the back surface part 103 side, or may be attached while being sandwiched between the first surface part 101 and the back surface part 103.

[0018] 〔Edge 30〕 The edge 30 is a part that contacts the face and covers the face around the main body 10. The edge 30 has the same shape as the contour of the main body 10. As shown in FIG. 1(a) or (b), when observed from the side, it is an arc shape that protrudes outward, and as shown in FIG. 2(a), when observed from the front, it is a substantially elliptical shape. The edge 30 may be provided with a core material such as a wire that holds the shape so that it can firmly cover the face according to the shape of the face.

[0019] 〔Inner part 40〕 The inner portion 40 is the inner part of the main body 10 that covers the face while remaining away from it. The inner portion 40 has a shape similar to the main body 10 excluding the edges, and as shown in Figure 1(a), when viewed from the side it is roughly trapezoidal, and as shown in Figure 2(a), when viewed from the front it is roughly elliptical. When a subject wears the mask 1, the inner portion 40 side of the main body 10 is away from the subject's face, so a predetermined space S is partitioned, as shown in Figure 5.

[0020] [Through hole 50] The through-hole 50 is formed to penetrate the main body 10 and is a portion through which an endoscope or other device inserted into the body through the nose or mouth of the wearer (subject). As shown in Figures 1 and 2, the through-hole 50 is formed on the first leg 13 side of the upper base 11. In other words, the through-hole 50 is designed to be positioned in a location corresponding to the subject's nose in the first covering state. Because the outside of the through-hole 50 is welded, the strength around the through-hole 50 in the main body 10 is increased. It is preferable that the through-hole 50 be formed at a position where the inner part 40 and the virtual symmetry plane VS intersect.

[0021] The through-hole 50 is formed to a diameter of 15 mm so that a transnasal endoscope with a diameter of approximately 5-8 mm or an oral endoscope with a diameter of approximately 8-12 mm can be inserted through it. The through-hole 50 is formed to be larger than the diameter of the transnasal or oral endoscope. This is to prevent the medical lubricant applied to the endoscope from being scraped off when the endoscope is inserted through the through-hole 50. In addition, because a space S is formed in the inner part 40 of the mask 1, it does not adhere tightly to the subject, making it easy for medical personnel to confirm the position of the nose and mouth.

[0022] [Mark 60, 70] Marks 60 and 70 are formed on the main body 10 and indicate the orientation in which the main body is in the first covering state and / or the second covering state. Mark 60 is a marker indicating the orientation in which the main body 10 is in the first covering state, and as shown in Figures 1 and 2, it is formed between the lower base 12 and the first leg 13 and is inscribed with, for example, "nasalUP↑". When a subject undergoes, for example, a transnasal endoscopy, they can wear the mask 1 with the main body 10 covering their face in the first covering state, using mark 60 as a guide.

[0023] Mark 70 is a marker indicating the orientation in which the main body 10 is in the second covering state. As shown in the figure, it is formed between the lower base 12 and the second leg 14 and is inscribed with, for example, "oralUP↑". When a subject undergoes, for example, an oral endoscopy, they can wear the mask 1 with the main body 10 covering their face in the second covering state, using mark 70 as a guide.

[0024] [Laminated Sheet 100] As shown in Figure 3, the laminated sheet 100 is a flat plate-shaped member for assembling the main body 10. As shown in Figure 4, the laminated sheet 100 is made up of a first surface portion 101, a second surface portion 102, and a back portion 103 that are stacked on top of each other in order. The laminated sheet 100 is formed in a substantially rectangular shape with a long side 112a on the upper side, short sides 112b on both ends, and a long side 114 on the lower side. As shown in Figure 3, the laminated sheet 100 is rolled up so that the space between the long side 112a and the short side 112b forms a predetermined arc 112c.

[0025] As shown in Figure 3, the laminated sheet 100 is welded with a predetermined pressure and temperature to form a welded portion 110W, bordering the long side 112a, the short side 112b, and a predetermined arc 112c. As shown in Figure 4, the laminated sheet 100 has an edge portion 30 on one side and an inner portion 40 on the other, separated by the welded portion 110W. The laminated sheet 100, made by overlapping three members, is bonded together with a thinner thickness at the welded portion 110W. Therefore, the welded portion 110W acts as a restricting portion that restricts the movement of discharged material between the edge portion 30 and / or the inner portion 40.

[0026] The long side 112a, short side 112b, and arc 112c of the laminated sheet 100 form the lower base 12 of the assembled main body 10 (see Figure 1). The laminated sheet 100 is formed symmetrically, and the portion along the axis of symmetry 113 shown in Figure 3 is folded to form the first leg 13 of the main body 10 (see Figure 1).

[0027] As shown in Figure 3, the laminated sheet 100 is cut in a triangular shape with line symmetry at the point where the axis of symmetry 113 and the lower long side 114 intersect, forming a pair of hypotenuses 111. The pair of hypotenuses 111 are cut in a semicircular shape to form a pair of semicircular through holes 150. As shown in Figure 3, the laminated sheet 100 is welded with a predetermined pressure and temperature so as to frame the semicircular through holes 150 to form a welded portion 150W. The two long sides 114 of the laminated sheet 100 are welded with a predetermined pressure and temperature to become the second legs 14 of the assembled main body 10 (see Figure 1). The two hypotenuses 111 of the laminated sheet 100 are welded with a predetermined pressure and temperature to become the upper base 11 of the assembled main body 10 (see Figure 1). The semicircular through holes 150 of the laminated sheet 100 become the through holes 50 of the assembled main body 10 (see Figure 1).

[0028] [First surface portion 101, second surface portion 102] The first surface portion 101 and the second surface portion 102 are components for preventing the spread of droplets. The first surface portion 101 and the second surface portion 102 are formed from, for example, a nonwoven fabric made of synthetic resin such as polyester. The first surface portion 101 and the second surface portion 102 should have a structure in which fine fibers are intertwined, which is good for preventing the entry and spread of viruses. In this example, the main body portion 10 (laminated sheet 100) is made by overlapping two sheets, the first surface portion 101 and the second surface portion 102, to prevent droplets emitted by the subject from scattering outwards.

[0029] [Back part 103] The back surface 103 is a component for absorbing waste. The back surface 103 is made of an absorbent sheet that absorbs waste such as droplets, saliva, or drool emitted from the mouth or nose of the subject during an endoscopic examination. The back surface 103 is made of a synthetic resin nonwoven fabric combining polyester and rayon. In this example, the back surface 103 is made of a nonwoven fabric with a ratio of 55% polyester and 45% rayon. Because rayon is used in the back surface 103, it has good moisture absorption and a pleasant feel against the skin. Rayon is a natural fiber whose main component is cellulose found in natural plants, and it is made of filament yarn with a continuous length. For this reason, the back surface 103 containing rayon has a better feel against the skin and a smooth, dry, comfortable feel compared to nonwoven fabrics made only of short fibers. The back surface 103 may also have many straight grooves and small holes made along these grooves so that waste can accumulate in those areas.

[0030] [How to use] Next, we will explain how to use Mask 1, which is configured as described above. In this example, we will explain how a subject undergoing transnasal endoscopy or oral endoscopy should wear Mask 1. Figure 5(a) shows a subject undergoing transnasal endoscopy wearing Mask 1, and Figure 5(b) shows a subject undergoing oral endoscopy wearing Mask 1. Note that in Figure 5, the mask is made transparent to explain the state of the endoscope inside Mask 1. To reduce the burden on the subject when inserting the endoscope into the body of a medical professional, apply medical lubricant to the transnasal endoscope E1 or oral endoscope E2.

[0031] When a subject is undergoing a transnasal endoscopy, the subject wears the mask 1 with the main body 10 covering the face using the mark 60 on the mask 1 as a guide, in the first covering state. When a subject is undergoing an oral endoscopy, the subject wears the mask 1 with the main body 10 covering the face using the mark 70 on the mask 1 as a guide, puts the mouthpiece MP in their mouth, and then wears the mask 1. When the subject wears the mask 1, as shown in Figure 5, the edge 30 touches the face and covers the face, and the inner part 40 covers the face away from the face, and a predetermined space S is partitioned between the subject's face and the inner part 40. When the subject wears the mask 1, the main body 10 covers the face, and in the first covering state, the through-hole 50 is positioned to correspond to the subject's nose, and in the second covering state, the through-hole 50 is positioned to correspond to the subject's mouth.

[0032] As shown in Figure 5, a medical professional inserts either a transnasal endoscope E1 or an oral endoscope E2 through the through-hole 50 of the mask 1. Since the diameter of the through-hole 50 is larger than the diameter of the transnasal endoscope E1 or oral endoscope E2, the medical lubricant can be inserted into the nose and the oral endoscope E2 into the mouth without being scraped off at the through-hole 50. Because the diameter of the through-hole 50 is larger than the diameter of the transnasal endoscope E1 or oral endoscope E2, the medical professional can insert either the transnasal endoscope E1 or oral endoscope E2 into the nose while confirming the position of the subject's nose and mouth. Since the through-hole 50 is formed at the position where the inner part 40 and the virtual plane of symmetry VS intersect, it is easy to insert into either the left or right nostril. In addition, since a space S is formed in the inner part 40 of the mask 1, it does not adhere tightly to the subject, making it easy for the medical professional to confirm the position of the nose and mouth.

[0033] When a subject has a transnasal endoscope E1 inserted, the endoscope may stimulate nerves in the nasal mucosa, causing them to sneeze and release droplets. Also, when a subject has a transnasal endoscope E1 or an oral endoscope E2 inserted, the gag reflex may be triggered, causing them to drool or cough, releasing droplets. In this case, the droplets, saliva, or other excretions are absorbed by the back surface 103 of the inner surface 40 of the mask 1. The back surface 103 quickly absorbs viscous excretions, so the absorbed excretions are less likely to come into contact with the skin, preventing stuffiness and stickiness. The excretions absorbed by the back surface 103 accumulate in the grooves of the back surface 103, so the absorbed excretions are less likely to come into contact with the skin.

[0034] Furthermore, since the excrement is absorbed on the inner part 40, which is away from the subject's face, the absorbed excrement is less likely to come into contact with the wearer's skin. The excrement absorbed on the inner part 40 is restricted by the welded part 110W and does not move towards the edge part 30, so the absorbed excrement is less likely to come into contact with the wearer's skin. Even if the back surface 103 is unable to absorb all of the excrement, the first surface part 101 and the second surface part 102 of the two nonwoven fabrics prevent the spread of the excrement. By wearing mask 1, the subject can undergo examination without medical personnel seeing them excreting. By wearing mask 1, the subject can reduce anxiety about spreading their droplets and embarrassment from drooling to avoid aspiration.

[0035] Thus, Mask 1 prevents the spread of waste products from the subject undergoing endoscopic examination, and the back surface 103 absorbs the waste products, making it comfortable to wear as the waste products do not easily come into contact with the skin. Because Mask 1 is formed in a three-dimensional shape, there is less contact with the skin, and the back surface 103 is made of a skin-friendly material, making it comfortable to wear. Mask 1 can be used in different ways depending on the type of examination, such as transnasal endoscopy or transoral endoscopy. Mask 1 allows for quick and easy determination of how to wear it depending on the type of endoscopic examination.

[0036] As shown in Figure 5, Mask 1 can cover the subject's nose and mouth in either the first or second covering state. Therefore, when the subject wears Mask 1 during an endoscopic examination, the dispersion of droplets is reduced. This reduces the risk of droplet infection for healthcare workers, allowing them to perform endoscopic examinations with peace of mind. In addition, because a space S is formed between the subject and Mask 1, healthcare workers can easily operate the endoscope.

[0037] [Second Embodiment] A second embodiment of the present invention will be described with reference to the drawings. Figure 6(a) is a left side view when a subject undergoing transnasal endoscopy is wearing mask 1, and Figure 6(b) is a left side view when a subject undergoing oral endoscopy is wearing mask 1. In the second embodiment, the same reference numerals are used for the same parts as in the first embodiment described above, and detailed descriptions are omitted.

[0038] [Transparent part 80] The transparent part 80 is formed on the main body 10 and is a component that is entirely or partially transparent. The transparent part 80 is made of a synthetic resin film such as polyester. The transparent part 80 may be bonded to the first surface part 101 or the second surface part 102, or it may be formed integrally with the first surface part 101 or the second surface part 102. Because the transparent part 80 is located on the main body, medical personnel can see the endoscope inside the mask 1 and check the markings on the insertion part of the endoscope. Therefore, medical personnel can operate the endoscope while observing the nose and mouth through the transparent part 80. In addition, when medical personnel are performing an endoscopic examination on a subject, they can determine the distance from the through-hole 50 to the nose and mouth, and the distance from the nose and mouth to the disease, by looking at the markings on the endoscope through the transparent part.

[0039] [Aperture section 90] The constricting portion 90 is a member that narrows the diameter of the through-hole 50. The constricting portion 90 is formed from a string-passing portion 91 and a constricting string 92. The string-passing portion 91 is formed in the main body portion 10 so as to frame the through-hole 50 and is an insertion passage through which the constricting string 92 can be passed. The constricting string 92 is a string-like member that is inserted through the string-passing portion 91. By pulling the constricting string 92 inserted through the string-passing portion 91, the diameter of the through-hole 50 can be narrowed. When inserting the endoscope through the nose or mouth, medical professionals can avoid narrowing the through-hole 50, thus preventing the medical lubricant applied to the endoscope from being scraped off. On the other hand, after the endoscope tip coated with medical lubricant has passed through the through-hole, medical professionals can pull the constricting string 92 to narrow the diameter of the through-hole 50. By narrowing the diameter of the through-hole 50, the gap between the endoscope and the through-hole 50 is eliminated, thus preventing the spread of droplets.

[0040] Although embodiments of the present invention have been described above, the present invention is not limited to these embodiments and can be modified without departing from the purpose and spirit of the present invention. The first surface portion 101 and the second surface portion 102 are not limited to polyester, but may be made of nonwoven fabric made of polypropylene or other synthetic resins. The main body portion 10 of the mask 1 can be in any shape as long as the space S is partitioned. In this example, the mask 1 is made by overlapping two nonwoven fabrics, the first surface portion 101 and the second surface portion 102, but the nonwoven fabric used as the surface portion may be one or more pieces. In this example, the through hole 50 is formed with a diameter of 15 mm, but its size may be changed as appropriate depending on the type of endoscope used and its diameter.

[0041] In this example, the support portion 20 is formed in a ring shape so that it can be hooked over the ears, but an adjustment portion for adjusting the size of the ring may be attached, or it may be in the shape of a string so that the mask 1 can be worn without hooking it over the ears. The transparent portion 80 is not limited to polyester, but may be a film made of polypropylene or other synthetic resin. In this example, the welded portion 110W is a restricting portion that restricts the movement of discharge between the edge portion 30 and / or the inner portion 40. However, a separate restricting portion for restricting the movement of discharge may be provided. For example, a dam to block the movement of discharge may be attached to the edge portion 30 side of the back portion 103 by injection molding and used as a restricting portion. [Explanation of symbols]

[0042] 1: Mask 10: Main body 20: Support part 30: Edge 40: Inner part 50: Through hole 60 :mark 70 :mark

Claims

1. a main body (10) formed of sheet-like surface portions (101, 102) and a sheet-like back surface portion (103) that is overlaid on the surface portions and absorbs exudates from the wearer's mouth and / or nose, and that can cover the wearer's face by switching between a first covering state and a second covering state; a support part (20) attached to the main body part and supporting the main body part on the wearer's face; a through-hole (50) formed to penetrate the main body, arranged at a position corresponding to the wearer's nose in the first covered state, and arranged at a position corresponding to the wearer's mouth in the second covered state, for passing an instrument to be inserted into the wearer's body; A mask comprising:

2. 2. The mask of claim 1, a mark (60, 70) formed on the main body portion to indicate the orientation of the main body portion in the first covered state and / or the second covered state; A mask comprising:

3. 3. The mask according to claim 1 or 2, An edge portion (30) that forms a part of the main body portion and contacts the face around the main body portion to cover the face; an inner part (40) that forms a part of the main body part and is spaced from the face at an inner part of the edge part to cover the face; a restricting portion formed between the edge portion and the inner portion, which restricts movement of waste absorbed by the inner portion toward the edge portion; A mask comprising:

4. 4. The mask of claim 3, The main body is formed symmetrically with respect to a virtual symmetry plane (VS), The through hole is formed at a position where the inner portion and the virtual symmetry plane intersect. A mask characterized by:

5. The mask according to any one of claims 1 to 4, A transparent part (80) formed on the main body part, the whole or a part of which is transparent or semi-transparent; A mask comprising:

6. The mask according to any one of claims 1 to 5, a constriction portion (90) disposed around the through hole and constricting the diameter of the through hole; A mask comprising:

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