JP6380954B2 - Mask and mask device - Google Patents

Description

  The present invention relates to a gas supply mask such as an oxygen mask that is attached to the head of a human body and used when supplying a breathing gas such as oxygen, and a mask device including the mask.

  2. Description of the Related Art There are known a ventilator for sending a breathing gas containing a predetermined amount of oxygen to a patient and a device for oxygen inhalation therapy. The breathing gas is supplied from these devices to the patient via the mask device. As disclosed in Patent Document 1, for example, the mask device is configured such that a stretchable string (a rubber band for attachment) is attached to a mask (oxygen mask) attached to a patient's face.

  In the mask apparatus disclosed in Patent Document 1, a plurality of holes for attaching mounting rubber bands are provided on the left and right sides of the outer peripheral portion of the mask. Then, both ends of the mounting rubber band are passed through two holes on the left side of the plurality of holes provided, and both ends of another mounting rubber band are also passed through the two holes on the right side. Thus, the mask device can be worn on the patient by putting the left and right wearing rubber bands on the ears.

JP 2005-253925 A

  By the way, as described in Patent Document 1, the conventional mask apparatus has only one hole on each side of the mask for attaching the mounting rubber band. By attaching the both ends of the rubber band for attachment to the holes of the one, the single rubber band for attachment is installed over the patient's head. For this reason, it was difficult to hold the mask in a stable state on the patient's face. In this regard, even when the wearing rubber band is worn on the ear as in the mask device described in Patent Document 1, in order to keep the wearing position of the mask in a stable state, the wearing rubber band is used. It is necessary to increase the holding power. However, considering that the burden on the patient is increased by pressing the wearing rubber band strongly against the ear, it should be avoided to increase the holding force of the wearing rubber band.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a mask and a mask device that can be mounted without strongly pressing the mask against the patient's face and that can hold the mounting position in a stable state. To do.

The present invention is a mask device having a mask to be worn so as to cover the nose and mouth, and a wearing string attached to the outer periphery of the mask and hung on the head, the outer periphery of the mask A flange portion that abuts on the face is provided on the portion, and among the flange portions, a left flange portion and a right flange portion that abut on both cheek portions, an upper flange portion that abuts on the nose portion, and a lower side that abuts on the jaw portion The left flange portion and the right flange portion are paired with the left flange portion and the right flange portion. The left flange portion and the right flange portion are paired with the left flange portion and the right flange portion. And four pairs are provided at intervals in the vertical direction, and the left side flange part and the upper part of the right side flange part are provided with protruding parts that protrude toward the left and right outer sides. Before Of the four pairs of string attachment holes, a pair of string attachment holes positioned second from the top are arranged, and the respective centers of the protrusions from the upper end of the mask with respect to the length S1 in the vertical direction of the mask The ratio S2 / S1 of the length S2 to the part is in the range of 0.38 to 0.48, and the band part is formed by bridging the attachment string over the string attachment hole. it characterized in that it is formed at least upper and lower stages.

When the masking device is worn with the strap attached to the head, the left and right flanges to which the mask strap is attached are pressed against both cheeks. Since a plurality of pairs of holes are provided and the band part is formed in at least two stages, the band part is stable without strongly pressing the left flange part and right flange part against both cheeks compared to the case where it is configured in one stage. It can be fixed with. Further, since the left flange portion and the right flange portion are provided wide, the mask mounting position is difficult to shift and can be held in a stable state.

  In the mask device of the present invention, after the one end of the attachment string is inserted into the string attachment hole of either the left flange part or the right flange part, the string attachment paired with the string attachment hole By passing through the mounting hole, a first-stage band portion was provided that spans the mounting cord between the left flange portion and the right flange portion, and the strap was inserted into the pair of string attachment holes. One end portion of the attachment cord is inserted into a pair of cord attachment holes that are spaced apart in the vertical direction from the pair of cord attachment holes, and the cord that is further spaced apart in the vertical direction. A second-stage band portion is provided in which the attachment cord is bridged between the left flange portion and the right flange portion by being inserted into the string attachment hole paired with the attachment hole. And

In this case, a two-stage band portion can be formed with a single strap for attachment. In addition, since the band part of the two stages is formed by one attachment cord, the middle part of the attachment cord is arranged with an interval in the vertical direction when attached to the left flange portion or the right flange portion. It is hung between the holes for attaching the straps to be fixed. For this reason, the flange part of a mask can be stably hold | maintained on a patient's face. On the other hand, the both ends of the attachment cord are attached to the left flange portion or the right flange portion on the opposite side to the portion where the intermediate portion of the attachment cord is fixed, and the attachment holes are spaced apart in the vertical direction. The insertion position can be freely adjusted in the length direction. For this reason, by adjusting the length of the part pulled out from the string attachment hole on both ends of the attachment string, that is, adjusting the insertion position between the string attachment hole and both ends of the attachment string. Thus, the length of the two-stage band portion can be easily adjusted. In this way, since the both ends of the mounting cord are pulled out from one side of the left flange portion or the right flange portion, when mounting the mask device, by pulling the mounting strap on one side, etc. The length of the part can be easily adjusted, and the mounting operation can be easily performed.
Furthermore, by forming the two-stage band portion with one wearing cord, the cost can be reduced compared to the case where a plurality of band portions are formed using a plurality of wearing cords. .

The mask of the present invention is a mask to be worn so as to cover the nose and mouth, and a flange portion that comes into contact with the face is provided on the outer peripheral portion thereof, and the left side that comes into contact with both cheek portions of the flange portion The flange portion and the right flange portion are provided wider than the upper flange portion that contacts the nose portion and the lower flange portion that contacts the jaw portion. The left flange portion and the right flange portion are attached to the left flange portion and the right flange portion. A string attachment hole for inserting a string is provided at the left flange part and the right flange part, and four pairs are provided at intervals in the vertical direction, and above the left flange part and the right flange part. The portion is provided with a protruding portion that protrudes toward the left and right outer sides, and the protruding portion has a pair of string attachment holes located second from the top of the four pairs of string attachment holes. Is provided with the mask The ratio S2 / S1 in the vertical direction from the upper end of the mask to the length S1 of to the respective center of the protrusion length S2 is characterized in that it is a range of from 0.38 to 0.48.

  According to the present invention, the mask can be mounted without being strongly pressed against the patient's face, and the mounting position can be maintained in a stable state.

It is a front view of the mask of 1st Embodiment of this invention. It is a rear view of the mask of FIG. It is a left view of the mask of FIG. It is a principal part figure explaining attachment of the string for mounting to a mask. It is a front view in the wearing state of the oxygen mask device of a 1st embodiment of the present invention. It is a left view in the mounting state of the oxygen mask apparatus shown in FIG. It is a front view in the vapor deposition state of the oxygen mask apparatus of 2nd Embodiment of this invention.

Hereinafter, embodiments in which a mask and a mask apparatus of the present invention are applied to an oxygen mask apparatus will be described with reference to the drawings.
As shown in FIGS. 5 and 6, the oxygen mask device 100 of the first embodiment includes a mask 1 that is worn so as to cover the nose 91 and the mouth 92 of the patient 9, and an outer peripheral portion of the mask 1. And a wearing cord 5 which is attached to the head 93 of the patient 9 to be hung.
The mask 1 is formed in a symmetrical shape on the left and right sides by a substantially transparent (in other words, translucent) soft synthetic resin such as soft vinyl chloride.
5 and 6, reference numeral 94 denotes the left eye of the patient 9 and reference numeral 95 denotes the right eye of the patient 9. Hereinafter, in the present embodiment, the left-right direction of the mask 1 will be described with the right eye 95 side of the patient 9 as the right direction (right side) and the left eye 94 side of the patient 9 as the left direction (left side). That is, in FIG. 5, the left side of the drawing is the right side of the mask 1, and the right side of the drawing is the left side of the mask 1.

As shown in FIGS. 1 to 3, 5, and 6, the mask 1 has a dome-shaped cover portion 2 so as to provide a space between the nose portion 91 and the mouth portion 92 of the patient 9 in the central portion thereof. Is formed, and the flange portion 3 that abuts against the face 90 of the patient 9 is provided on the outer peripheral portion of the cover portion 2.
On the left and right sides of the cover portion 2 formed in a dome shape, a pair of left and right substantially triangular vent holes 21 and 22 for ventilating between the inside and the outside of the cover portion 2 are located on the upper side. Each is arranged. In addition, when the mask 1 is attached to the patient 9, the ventilation openings 21 and 22 are arranged at positions corresponding to the nostrils 91 a on the left and right sides of the patient 9 and the periphery of the nostrils 91 a.

  A cylindrical connector mounting portion 23 for mounting the tube connector 61 of the gas supply tube 6 is disposed at a position slightly below the center position of the cover portion 2. The connector mounting portion 23 is formed on the lower side of the mask 1 with the distal end portion of the cylinder facing. And the two notch piece parts 24 and 25 are provided in the front-end | tip part of the cylinder, The latching hole engaged with the nail | claw part of the tube connector 61 is provided in the notch piece parts 24 and 25. .

  The tube connector 61 is made of a substantially transparent (in other words, translucent) hard synthetic resin such as hard vinyl chloride. The tube 62 of the gas supply tube 6 is formed of a soft synthetic resin such as soft vinyl chloride (in other words, has a light transmitting property), and has a tube connector 61 attached to one end thereof. And is attached to the mask 1 via the tube connector 61. Further, an external connection connector 63 connected to a gas cylinder such as an oxygen cylinder or a gas supply nozzle disposed in a hospital room or the like is attached to the other end portion of the tube 62. Therefore, a gas flow is sent into the space in the mask 1 of the oxygen mask device 100 via the connector mounting portion 23.

The flange portion 3 includes an upper flange portion 31 that contacts the nose portion 91 of the patient 9, a left flange portion 32 and a right flange portion 33 that contact both cheek portions 96 and 97, and a lower side that contacts the jaw portion 98. The flange portion 34 is formed continuously.
The upper flange portion 31 has a curved shape protruding toward the front (in other words, outside) so as to correspond to the shape of the nose portion 91. The left flange portion 32 and the right flange portion 33 have a curved shape that slightly protrudes forward so that the upper portion corresponds to the shape of both cheeks 96 and 97, and the lower portion is substantially flat. Is formed. The lower flange portion 34 is formed to be substantially flat continuously to the left flange portion 32 and the right flange portion 33.
The left flange portion 32 and the right flange portion 33 of the flange portion 3 can be entirely flat, and the lower flange portion 34 has a curved shape corresponding to the shape of the jaw 98. It is also possible.

In the flange portion 3, the left flange portion 32 and the right flange portion 33 are provided wider than the upper flange portion 31 and the lower flange portion 34. That is, as shown in FIG. 2, the width W2 of the left flange portion 32 and the width W3 of the right flange portion 33 are larger than the width W1 of the upper flange portion 31 and the width W4 of the lower flange portion 34. .
Further, the left flange portion 32 and the right flange portion 33 are paired with the left flange portion 32 and the right flange portion 33 in the string attachment holes 41 to 48 through which the attachment string 5 is inserted, and in the vertical direction. A plurality of pairs are provided at intervals. In this embodiment, four pairs of string attachment holes 41 to 48 are provided. Each pair of string attachment holes 41 to 48 is provided so as to penetrate in the thickness direction of the left flange portion 32 and the right flange portion 33.

  Further, as shown in FIG. 1 and FIG. 2, the upper portions of the left flange portion 32 and the right flange portion 33 are extended with their widths partially extended to extend to the left and right outer sides. Protrusions 35 and 36 having a shape are provided, and a pair of string attachment holes 43 and 44 among a plurality of pairs of string attachment holes 41 to 48 are disposed in the protrusions 35 and 36. The protrusions 35 and 36 are not limited to a trapezoidal shape, and can be formed in other shapes such as a rectangular shape, a semicircular shape, a semielliptical shape, and a semielliptical shape.

1 and 2, the string attachment holes 41 to 48 are formed in a substantially circular shape when seen in a plan view, and the diameter L5 (in other words, the maximum length seen in a plan view) is not shown. However, it is formed to be approximately 2 mm. The string attachment holes 41 to 48 are not limited to a circular shape, and may be a polygonal shape such as a hexagon or an octagon.
The diameter L5 of the string attachment holes 41 to 48 is determined in consideration of the relationship with the thickness of the attachment string 5 and the like, but is approximately the same as the diameters of both end portions 51 and 52 of the attachment string 5 described later. Alternatively, by forming it slightly larger than that, it becomes easier to insert the attachment cord 5 when inserting it into the cord attachment holes 41 to 48. Further, from the viewpoint of practicality, the diameter L5 of the string attaching holes 41 to 48 is preferably in the range of 1.5 to 2.5 mm, and most preferably in the range of 1.7 mm to 2.3 mm. .

  In addition to the string attachment holes 41 to 48, the left flange portion 32 and the right flange portion 33 have bandage attachment long holes 71 to 74 through which bandages (not shown) can be inserted. A pair is formed with the flange portion 33, and a plurality of pairs are provided at intervals in the vertical direction, and two pairs are provided in the present embodiment. The bandage attaching long holes 71 to 74 are provided so as to penetrate in the thickness direction of the left flange portion 32 and the right flange portion 33, and are linearly formed along the length direction of the left flange portion 32 and the right flange portion 33. It is formed by a long hole (in other words, a long thin hole in a plan view) extending in the direction. Of these two pairs of bandage attachment long holes 71 to 74, the upper bandage attachment long holes 71 and 72 are the second-stage string attachment holes 43 and 44 formed in the protrusions 35 and 36. The bandage attachment long holes 71, 72 and the string attachment holes 43, 44 are arranged so as to face each other in the left-right direction.

  In addition, although illustration is abbreviate | omitted, the opening width H seen planarly of the long holes 71-74 for bandage attachment is about 1 mm, and the opening length S seen planarly is about 10 mm. In addition, as for the dimension of the long holes 71-74 for bandage attachment, it is that the opening width H is a range of 0.75-1.25 mm and opening length S is 7.5-12.5 mm from a viewpoint of practicality. More preferably, the opening width H is in the range of 0.82 to 1.18 mm, and the opening length S is in the range of 8.2 to 11.8 mm.

  Note that the vertical length S1 of the mask 1 shown in FIG. 2 is approximately 105 mm. The length S2 from the upper end of the mask 1 to the center of each of the protruding portion 35 of the left flange portion 32 and the protruding portion 36 of the right flange portion 33 (in other words, a pair of left and right string attachment holes from the upper end of the mask 1). The length to the center of 43 and 44) is approximately 38 mm. Therefore, the ratio (S2 / S1) of the length S2 to the vertical length S1 of the mask 1 is approximately 0.36. From the viewpoint of practicality, the ratio (S2 / S1) is preferably in the range of 0.38 to 0.48, and most preferably in the range of 0.40 to 0.46.

  The wearing cord 5 attached to the mask 1 is formed of a material having flexibility and elasticity, and is formed of, for example, a relatively narrow elastic body having a flat cross section perpendicular to the extending direction. Is done. Specifically, as shown in FIG. 4, it may be a woven fabric that is configured in a tape shape with a relatively narrow width and is woven with cotton yarn and polyurethane fiber yarn (particularly, polyurethane elastic fiber yarn). Both end portions 51 and 52 of the wearing cord 5 are formed into a columnar shape by being covered with a cylindrical covering tube made of a heat-shrinkable synthetic resin or the like.

  The cross section of the intermediate portion 53 of the attachment cord 5 has a thickness t of approximately 1.5 mm and a width g of approximately 6 mm. Moreover, the diameter of the both ends 51 and 52 of the attachment cord 5, that is, the diameter of the outer peripheral surface of the covering tube (maximum length of the cross section) is approximately 2 mm. Therefore, the diameters of both end portions 51 and 52 of the wearing cord 5 and the diameters of the cord attaching holes 41 to 48 of the mask 1 are formed to be substantially the same diameter. Moreover, the area of the cross section of the intermediate portion 53 of the attachment cord 5 is larger than the opening area of the attachment holes 41 to 48, and as shown in FIG. When the cord attachment holes 41 to 48 are inserted, the intermediate portion 53 is pressed down and pressed down, so that the insertion position is not easily displaced in the length direction of the attachment cord 5.

  From the viewpoint of practicality, the dimensions of the attachment cord 5 are as follows: the thickness t of the intermediate portion 53 excluding both end portions 51 and 52 is 1.12 to 1.88 mm, and the width g is 4.5 to 7.5 mm. It is preferable that the thickness t is 1.25 to 1.75 mm, and the width g is 5.0 to 7.0 mm. Further, the diameter D of both end portions 51 and 52 of the wearing cord 5 is preferably in the range of 1.5 mm to 2.5 mm, and most preferably in the range of 1.7 to 2.3 mm.

  Then, the attachment string 5 is bridged between the string attachment holes 41 to 48 that form a pair of left and right pairs of the mask 1, for example, between the string attachment holes 43 and 44, and the string attachment holes 47 and 48, As shown in FIGS. 5 and 6, the oxygen mask device 100 is formed with at least two upper and lower band portions 54 and 55. As shown in FIG. 5, the band portions 54 and 55 are bridged between the left flange portion 32 and the right flange portion 33, and when the oxygen mask device 100 is attached to the patient 9, It arrange | positions so that it may pass through between the part 96, the head 93 (back head), and the right cheek part 97 sequentially.

  When attaching the attachment cord 5 to the mask 1, as shown in FIGS. 1 and 2, any one of the string attachment holes 41 to 48 provided in a plurality of pairs in the left flange portion 32 and the right flange portion 33. What is necessary is just to select two pairs of string attachment holes as the object of the attachment location of the attachment string 5. The pair of string attaching holes 43 and 44 provided in the protruding portion 35 of the left flange portion 32 and the protruding portion 36 of the right flange portion 33 are attachment portions with a standard height of the attaching string 5. It suggests. Therefore, when it is desired to provide the band portions 54 and 55 at a standard height, when forming one band portion of the two-stage band portions 54 and 55, the pair of protrusions 35 and 36 are provided. The attachment string 5 may be inserted into the string attachment holes 43 and 44.

In the oxygen mask device 100 of the present embodiment, as shown in FIGS. 5 and 6, the two band portions 54 and 55 are formed by one mounting cord 5. The attachment operation of the attachment cord 5 in the case where the two band portions 54 and 55 are formed by the single attachment cord 5 will be described with reference to FIG.
First, one of the both end portions 51 and 52 of the attachment cord 5 is inserted into the string attachment holes 41 to 48 of either the left flange portion 32 or the right flange portion 33. Here, the one end portion 51 is inserted into the string attachment hole 43 of the left flange portion 32. Specifically, as shown in FIGS. 4A and 4B, the one end portion 51 of the wearing cord 5 is directed from the front side of the mask 1 to the rear side (contact surface side with the face 90). As shown in FIG. 4 (c), the intermediate portion 53 of the attachment cord 5 is engaged with the attachment hole 43 by inserting the attachment portion 43 into the attachment hole 43 and pulling the one end 51 out of the attachment hole 43. Combine.

  And after inserting the one end part 51 of the attachment string 5 into the string attachment hole 43 in this way, the one end part 51 is further inserted into the string attachment hole 44 of the right side flange part 33 paired with the string attachment hole 43. Insert. Although not shown, one end 51 of the mounting cord 5 is inserted through the string attaching hole 44 from the rear side to the front side of the mask 1, and the one end 51 of the mounting cord 5 is inserted from the front side of the mask 1. The intermediate portion 53 of the attachment cord 5 is engaged with the cord attachment hole 44 by pulling out. Accordingly, a first-stage band portion 54 is provided in which the intermediate portion 53 of the attachment cord 5 is bridged between the left flange portion 32 and the right flange portion 33.

  Next, as described above, the one end portion 51 of the attachment cord 5 inserted through the cord attachment hole 44 of the right flange portion 33 is placed on the right side of the cord attachment hole 44 spaced apart in the vertical direction. It passes through any of the string attachment holes 41, 45, 47 of the flange portion 33. Here, one end 51 of the attachment cord 5 is inserted into the cord attachment hole 48. Specifically, one end portion 51 of the attachment cord 5 is inserted into the attachment hole 48 from the front side to the rear side of the mask 1, and the intermediate portion 53 of the attachment cord 5 is engaged with the attachment hole 48. Let At this time, until the middle portion 53 of the attachment cord 5 is bent between the attachment hole 44 and the attachment hole 48 arranged at a distance from the right flange portion 33, the attachment cord 5 is removed. The intermediate portion 53 is pulled out from the string attachment hole 48. As a result, as shown in FIG. 5, the intermediate portion 53 of the attachment cord 5 is hung and fixed between the cord attachment holes 44 and 48 arranged at intervals in the vertical direction.

  Then, after one end portion 51 of the attachment cord 5 is inserted into the string attachment hole 48 of the right flange portion 33, the one end portion 51 is further paired with the string attachment hole 48 and the string attachment hole of the left flange portion 32. 47 is inserted. In this case, one end portion 51 of the attachment cord 5 is inserted into the attachment hole 47 from the front side to the rear side of the mask 1, and the intermediate portion 53 of the attachment cord 5 is engaged with the attachment hole 47. . Accordingly, a second-stage band portion 55 is provided in which the intermediate portion 53 of the attachment cord 5 is bridged between the right flange portion 33 and the left flange portion 32.

  In this case, the intermediate portion 53 of the attachment cord 5 passed through the cord attachment holes 43 and 47 of the left flange portion 32 is formed by the inner peripheral edges of the cord attachment holes 43 and 47 as shown in FIG. By being compressed and constricted and supported, the lengths of the band portions 54 and 55 are maintained at a constant length. Therefore, the insertion positions of the string attachment holes 43 and 47 of the left flange portion 32 and the intermediate portion 53 of the attachment string 5 are attached from the attachment holes 43 and 47 by pulling out the attachment string 5 or the like. Unless a force such as positively pulling out the strap 5 is applied, there is almost no risk of shifting. On the other hand, the insertion positions of the string attachment holes 43 and 47 supported in this way and the intermediate portion 53 of the attachment string 5 are in the vicinity of the left flange portion 32 and on both ends 51 and 52 side of the attachment string 5. Can be freely adjusted in the length direction by applying a force for pulling out to the front side of the left side flange portion 32 or pulling it to the rear side of the left side flange portion 32. That is, by adjusting the insertion positions of the string attachment holes 43 and 47 of the left flange portion 32 and the both end portions 51 and 52 of the attachment cord 5, the lengths of the two band portions 54 and 55 can be easily achieved. Can be adjusted.

Thus, in the oxygen mask device 100 of the present embodiment, the left flange portion 32 to which the wearing string 5 of the mask 1 is attached and the right side when the wearing string 5 is hung on the head 93 of the patient 9 and worn. The flange portion 33 is pressed against both cheeks 96 and 97 of the patient 9, and a plurality of pairs of cord attachment holes 41 to 48 for attaching the attachment cord 5 are provided, and the band portions 54 and 55 are formed in at least two upper and lower stages. Therefore, the left flange portion 32 and the right flange portion 33 can be fixed in a stable state without being strongly pressed against both cheek portions 96 and 97, as compared with the case where they are configured in a single stage. Further, since the left flange portion 32 and the right flange portion 33 are provided wide, the mounting position of the mask 1 is difficult to shift and can be held in a stable state.
Further, by forming the two-stage band portions 54 and 55 with one wearing cord 5, the cost can be reduced compared to the case where a plurality of band portions are formed using a plurality of wearing cords. Can be planned.

  Further, since both end portions 51 and 52 of the mounting cord 5 are pulled out from one side of the left flange portion 32, when the oxygen mask device 100 is mounted, by pulling the mounting string 5 on one side, etc. The lengths of the band portions 54 and 55 can be easily adjusted, and the mounting operation can be easily performed. In the first embodiment, the intermediate portion 53 of the attachment cord 5 is fixed to the right flange portion 33 and the both end portions 51 and 52 are pulled out from the left flange portion 32. The intermediate portion 53 of the string 5 may be fixed to the left flange portion 32 and both end portions 51 and 52 may be pulled out from the right flange portion 33.

  In the oxygen mask device 100 of the first embodiment described above, the two-stage band portions 54 and 55 are formed by the single strap 5 for attachment, but in the second embodiment shown in FIG. Like the oxygen mask device 200, the two-stage band portions 56 and 57 can be formed by the two attachment strings 5A and 5B. In the second embodiment, since the same mask 1 as in the first embodiment is used, the description thereof is omitted, and in each drawing, common elements to those in the first embodiment are denoted by the same reference numerals. Description is omitted.

  In the oxygen mask device 200 of the second embodiment, the two attachment cords 5A and 5B are formed of a material having flexibility and elasticity, like the attachment cord 5 of the first embodiment. It is formed by a relatively narrow elastic body having a flat cross section perpendicular to the current direction. However, the string attachment hole 41 of the mask 1 is provided at one of the both ends of each of the attachment cords 5A and 5B, that is, at one end of the attachment cords 5A and 5B, as shown on the left side of FIG. The retaining portions 58 and 59 larger than the diameter of ˜48 are formed. On the other hand, the other end portions 51A and 51B of the wearing cords 5A and 5B are formed into a cylindrical shape by being covered with a cylindrical covering tube made of a heat-shrinkable synthetic resin or the like. The other end portions 51 </ b> A and 51 </ b> B are formed to have substantially the same diameter as the string attachment holes 41 to 48 of the mask 1. The retaining portions 58 and 59 can be easily formed by knotting a molded product having a size that does not pass through the string attaching holes 41 to 48 or the attaching strings 5A and 5B.

  In this way, by providing the retaining portions 58 and 59 at one end of the wearing cords 5A and 5B, the right-side flange portion 33 of the mask 1 masks the wearing cords 5A and 5B as shown in FIG. 1, the retaining portions 58 and 59 of the attachment cords 5 </ b> A and 5 </ b> B cannot be passed through the cord attachment holes 44 and 48 (see FIG. 1) and are fixed. On the other hand, in the left flange portion 32 of the mask 1, the intermediate portion 53 and the string attachment holes 43 and 47 are engaged and supported on the other end portions 51A and 51B side of the attachment cords 5A and 5B. The insertion position of the string attachment hole 43 and the intermediate portion 53 of the attachment string 5A, and the insertion position of the string attachment hole 47 and the attachment portion 5B of the intermediate portion 53 of the attachment string 5B are In the vicinity, by pulling out the other end 51A of the attachment string 5A and the other end 51B side of the attachment string 5B to the front side of the left flange part 32, or by applying a force to draw in the rear side of the left flange part 32, It can be adjusted freely in the length direction. That is, the insertion position between the string attachment hole 43 of the left flange portion 32 and the other end 51A side of the attachment string 5A, and the insertion position between the string attachment hole 47 and the other end 51B side of the attachment string 5B By adjusting, the lengths of the two-stage band portions 56 and 57 can be easily adjusted.

  In addition, this invention is not limited to the said embodiment, In the range which does not deviate from the meaning of this invention, a various change can be added.

DESCRIPTION OF SYMBOLS 1 Mask 2 Cover part 3 Flange part 5, 5A, 5B Attachment string 6 Gas supply tube 9 Patient 21, 22 Venting hole 23 Connector attachment part 31 Upper flange part 32 Left flange part 33 Right flange part 34 Lower side Flange part 35, 36 Protruding part 41-48 String attaching hole 51, 52 End part 53 Intermediate part 54, 55 Band part 61 Tube connector 62 Tube 63 External connection connector 71-74 Bandage attaching elongated hole 91 Nose part 91a Nose hole 92 Mouth 93 Head 94 Left eye 95 Right eye 96, 97 Cheek 98 Jaw 100 Oxygen mask device (mask device)

Claims (3)

A mask device having a mask worn so as to cover the nose and mouth, and a wearing string attached to the outer peripheral portion of the mask and hung on the head,
A flange portion that contacts the face is provided on the outer peripheral portion of the mask,
Among the flange portions, the left flange portion and the right flange portion that contact both cheek portions are provided wider than the upper flange portion that contacts the nose portion and the lower flange portion that contacts the jaw portion,
Wherein the left flange portion and said right side flange portion, said forms a string attachment hole for inserting the attachment straps pair and the right flange portion and the left flange portion, and an interval in the vertical direction four Paired ,
The left flange portion and the upper portion of the right flange portion are provided with projecting portions that project toward the left and right outer sides, and the projecting portions are provided from above the four pairs of string attachment holes. A pair of string attachment holes located second are arranged,
The ratio S2 / S1 of the length S2 from the upper end of the mask to the center of each of the protrusions with respect to the vertical length S1 of the mask is in the range of 0.38 to 0.48.
A band part is formed by bridging the attachment string to the string attachment hole,
2. The mask device according to claim 1, wherein the band part is formed in at least two stages. By inserting one end of the attachment cord into the string attachment hole of either the left flange portion or the right flange portion, and then inserting it into the string attachment hole paired with the string attachment hole. , A first-stage band portion is provided that spans the attachment string between the left flange portion and the right flange portion,
One end portion of the attachment cord inserted through the pair of cord attachment holes is inserted into a cord attachment hole disposed at a distance from the pair of cord attachment holes in the vertical direction, and The attachment string is bridged between the left flange part and the right flange part by being inserted into a string attachment hole that is paired with a string attachment hole that is disposed with a space in the vertical direction. The mask apparatus according to claim 1, wherein a second-stage band portion is provided. A mask worn to cover the nose and mouth,
A flange portion that abuts the face is provided on the outer peripheral portion,
The left flange portion and the right flange portion that contact both cheek portions of the flange portion are provided wider than the upper flange portion that contacts the nose portion and the lower flange portion that contacts the jaw portion,
In the left flange portion and the right flange portion, there are four pairs of string attachment holes through which the attachment string is inserted, and the left flange portion and the right flange portion are paired and spaced apart in the vertical direction . Protruding portions are provided on the left flange portion and the upper portion of the right flange portion so as to protrude toward the left and right outer sides, and the protruding portions include the four pairs of string attachment holes. A pair of string attachment holes located second from the top is provided, and the ratio S2 of the length S2 from the upper end of the mask to the center of each of the protrusions with respect to the vertical length S1 of the mask / S1 is in the range of 0.38 to 0.48 .

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