JP6943375B2 - Medical mask - Google Patents

Description

The present invention relates to a medical mask.

Conventionally, medical and hygienic masks are known. For example, Patent Document 1 describes a mask body having a covering portion capable of covering the wearer's nostrils and mouth, and a fastening string attached to the mask body and hung around the wearer's head. The provided mask is disclosed.

Japanese Unexamined Patent Publication No. 2012-10974

In the mask according to Patent Document 1, the chin rest portion facing the wearer's chin portion is located on the lower end side of the covering portion, so that the chin rest portion is the chin portion when the wearer moves the mouth in the wearing state. It is possible to prevent the entire covering portion from shifting upward due to contact with. Further, the mask body can be worn by hanging a pair of upper and lower tightening strings inserted into the string threading portions located above and below the both side edges of the mask body around the wearer's head.

However, in the mask according to Patent Document 1, while the chin rest covers the wearer's chin, it is not always in contact with the mask, so that the mask may be displaced from the chin during wearing.

In addition, when wearing the mask, it is necessary to hang the straps located above and the straps below the mask body around the head, so for example, the upper body can be placed while lying on the bed. When a wear assistant wears a mask on a severely unable patient, the wear assistant holds the lower lacing with the other hand while supporting the patient's head with one hand. After hanging around, it is necessary to grasp and hang the upper tightening string, which is troublesome.

An object of the present invention is to provide a medical mask which is an improvement of the conventional invention, has a stable wearing feeling and excellent airtightness in a wearing state, and can be easily attached.

The present invention relates to a medical mask having a vertical direction, a lateral direction, and a front-back direction, and having a mask main body and a fastening string connected to the mask main body.

In the medical mask according to the present invention, the mask body is made of a soft elastic material, and has a covering portion that covers the chin and mouth of the wearer and an inner side from the entire circumference of the rear peripheral edge of the covering portion. It has a lip portion extending to and a chin rest portion extending rearward from the lower end of the covering portion, and the tightening cord is formed of one annular elastic member, and is formed on the outer surfaces of both side portions of the covering portion. A pair of annular side string threading portions extending in the front-rear direction and an annular central string threading portion extending in the front-rear direction on the outer surface of the chin rest portion are connected to the mask body, and the tightening string is connected. It is characterized in that the chin rest portion is pressed against the chin portion of the wearer by the tightening string in a state of being hung around the wearer's head.

In one of the embodiments of the medical mask according to the present invention, the side string threading portion and the central string threading portion are integrally molded with the mask main body, and the tightening cords are respectively formed. It has an insertion portion to be inserted and a slit for inserting the tightening cord into the insertion portion, the slit of the side cord insertion portion is located on the front end side, and the slit of the central cord insertion portion is It is located on the rear end side.

In the medical mask according to the present invention, the tightening cord is formed of one annular elastic member, and the annular side cord threading portion extending in the front-rear direction on the outer surfaces of both side portions of the covering portion and the chin rest portion. The mask body is connected to the mask body via the annular central string threading portion extending in the front-rear direction on the outer surface, and the chin rest portion is connected by the tightening string in a state where the tightening string is hung around the wearer's head. Since it is pressed against the wearer's chin, the lip part is brought into close contact with the face and gas such as anesthetic gas supplied to the inside of the mask does not leak to the outside, and a hose for gas supply is connected. It can be worn stably in the state of being in a state of being.

The drawings show specific embodiments of the invention and include not only essential configurations of the invention, but also selective and preferred embodiments.
The perspective view which shows the wearing state of the medical mask which concerns on this invention. Front view of the mask body of the medical mask. Rear view of the mask body. FIG. 2 is a cross-sectional view taken along the line IV-IV of FIG. (A) Enlarged view of the side string threading portion. (B) Enlarged view of the central string threading portion. Side view of the medical mask in the wearing state. Perspective view of a conventional medical mask.

The following embodiments include not only the essential configurations of the invention, but also selective and preferred configurations for the medical masks 10 shown in FIGS. 1-6.

Referring to FIGS. 1 to 3, the medical mask 10 according to the present invention includes a vertical direction Y, a horizontal direction X, a front-rear direction Z, a cup-shaped mask main body 20, and a fastening string connected to the mask main body 20. Has 30 and. The mask body 20 includes an inner surface 20a facing the wearer's skin, an outer surface 20b located on the opposite side thereof, a covering portion (mouth and nose covering portion) 21 that covers the wearer's nostrils 2 and the mouth portion 3, and a covering portion (mouth and nose covering portion) 21. It has an annular lip portion 22 extending inward from the entire circumference of the rear peripheral edge 21a of the portion 21. An internal space S is defined between the covering portion 21 and the lip portion 22. By hanging the tightening string 30 around the wearer's head 1, the lip portion 22 of the mask body 20 is brought into close contact with the face, and the nostrils 2 and the mouth portion 3 are located in the internal space S.

The mask body 20 has a pair of side stringing portions 50 located on both side portions 26 and 27 of the mask body (or covering portion 21) 20 and a central stringing portion 60 located on the chin rest portion 28. The tightening string 30 is formed of one annular elastic member, and is stably and slidably connected to the mask main body 20 via the side string threading portion 50 and the central string threading portion 60. The tightening string 30 is located between the side string threading portions 50 and is hung around the wearer's head 1 from the side string threading portion 50 so as to cross the upper portion 30A and the lower portion of the mask body 20. It has a lower portion 30B that passes through the central stringing portion 60 and extends to the other side stringing portion 50.

The mask main body 20 includes a central portion 23, upper and lower end portions 24 and 25 facing each other in the vertical direction Y and extending in the horizontal direction X, and both side portions 26 and 27 facing each other in the horizontal direction X and extending in the vertical direction Y. Have. The upper end portion 24 of the mask body 20 is narrower than the lower end portion 25 and has a shape that is convex upward.

The mask body 20 further has a three-dimensional chin rest 28 extending rearward from the lower end of the covering portion 21. The chin rest 28 is positioned so as to face the wearer's chin 4 in the worn state. The outer peripheral edge of the chin rest 28 extends downward from below the curved front edge 28a along the lower edge of the lip 22 and the side insertion portions 50 located on both sides 26 and 27 of the covering 21. It is defined by both side edges 28b and 28c and a trailing edge 28d curved forward.

The lip portion 22 has an inner peripheral wall portion 40 that extends inward from the entire circumference of the rear peripheral edge 21a of the covering portion 21 and is in close contact with the wearer's face, and an opening 41 surrounded by the inner peripheral wall portion 40. The inner peripheral wall portion 40 has a three-dimensional shape that follows the shape of the wearer's face, and the upper end portion 42 of the inner peripheral wall portion 40 has a shape that is bent forward so as to fit the nose back of the wearer's nose. The lower end portion 43 of the inner peripheral wall portion 40 has a shape that is convex forward so as to fit the wearer's jaw portion.

Referring to FIGS. 2 and 4, a gas introduction portion 45 is arranged on the outer surface of the central portion 23 of the mask main body 20. The gas introduction portion 45 has a hollow cylindrical shape protruding forward from the outer surface of the mask main body 20, and has an opening end portion 45a and a gas introduction port 45b communicating with the internal space S. By attaching the end 8a of the gas supply hose 8 to the open end 45a of the gas introduction portion 45 and sending a gas such as anesthetic gas or oxygen to the internal space S through the gas introduction port 45b, the wearer These gases can be supplied to the airways.

The mask body 20 can be formed of a hard plastic material such as polycarbonate, a transparent or translucent soft elastic material having excellent flexibility such as fluororubber, urethane rubber, and silicone rubber. The covering portion 21, the lip portion 22, and the chin rest portion 28 of the mask body 20 can be integrally molded from these materials, but they are molded separately and joined to each other by a known bonding or welding means. May be good. However, it is preferable that at least the lip portion 22 and the chin rest portion 28 are formed of a material having excellent flexibility. For example, only the covering portion 21 is formed of a hard plastic material, and the lip portion 22 and the chin rest portion 28 are formed. It can also be formed from a soft elastic material. Further, since the mask body 20 is transparent or translucent, a wearing assistant such as a nurse can confirm the facial expression of the wearer such as a patient.

As the tightening string 30, a string-shaped elastic body made of a strand-shaped rubber string or the like or a band-shaped elastic body having a required thickness dimension such as flat rubber can be used. In this embodiment, a band-shaped elastic body is used in order to fit the chin rest 28 to the wearer's chin by the tightening string 30.

Referring to FIG. 5A, the side stringing portion 50 is an annular shape that stands up from the outer surface of the covering portion 21 and extends in the front-rear direction Z, and has a front end portion 51, a rear end portion 52, and a front-rear end portion 51. , 52 has a flap portion (intermediate portion) 53 extending between the two, and an insertion portion 54 for inserting the tightening string 30 surrounded by the rear end portion 52 and the flap portion 53. The flap portion 53 of the side string threading portion 50 extends forward from the rear end portion 52 via the bent portion 55, and the tightening string 30 enters the insertion portion 54 between the front end portion 51 and the flap portion 53. The slit 56 for making the slit 56 is located.

With reference to FIG. 5B, the central strapping portion 60 is an annular shape that stands up from the outer surface of the chin rest portion 28 and extends in the front-rear direction Z, and has a front end portion 61, a rear end portion 62, and a front-rear end portion. It has a flap portion (intermediate portion) 63 extending between 61 and 62, and an insertion portion 64 for inserting a tightening string 30 surrounded by the front end portion 61 and the flap portion 63. The flap portion 63 of the central string threading portion 60 extends rearward from the front end portion 61 via the bent portion 65, and the tightening string 30 enters the insertion portion 64 between the rear end portion 62 and the flap portion 63. A slit 66 for making the slit 66 is located.

With reference to FIGS. 5A and 5B, the length dimension (dimension in the front-rear direction Z) L1 of the side stringing portion 50 and the width dimension (dimension in the front-rear direction Z) W2 of the center stringing portion 60 are It is about the same size. These dimensions L1 and W2 are set so as to have a size such that the tightening string 30 inserts the insertion portions 54 and 64 in consideration of the width dimension of the tightening string 30. In the side string threading portion 50, the band-shaped tightening string 30 is pulled backward and upward and locked to the bent portion 55 in a state where the width is inserted, while in the central string threading portion 60, the tightening string 30 is inserted in the width. Although it is fitted to the chin rest portion 28 in a planar shape, the flap portion 63 can cover the entire width dimension of the tightening cord 30 because the width dimension W2 of the central string threading portion 60 has a predetermined size. can.

The thickness of the mask body 20 is 2.0 to 3.0 mm, and the thickness of the lip portion 22 and the chin rest portion 28 is 0.5 to 1.5 mm. As described above, since the mask body 20 is relatively thick, it is stably held against the wearer's face, while the lip portion 22 and the chin rest portion 28 are relatively thin. , Can be deformed and fitted along the shape of the face and chin 4. Further, the length dimension (dimension in the width direction X) L2 of the central string threading portion 60 is 1.5 to 2.5 times as large as the width dimension (dimension in the vertical direction Y) W1 of the side string threading portion 50. Have. Since the length dimension L2 of the central string threading portion 60 is relatively large, when the tightening string 30 is inserted through the insertion portion 64 of the central string threading portion 60 and pulled, the thin chin rest portion 28 is greatly distorted. Can be suppressed.

Referring to FIG. 6, in the side view of the medical mask 10, the tightening string 30 is inserted through the insertion portion 54 of the side string threading portion 50 and pulled backward, and is obliquely upward in a state of being in contact with the bent portion 55. The upper portion 30A is pulled to, and an upward tensile force F1 acts on the upper portion 30A. On the other hand, the lower portion 30B of the tightening string 30 is inserted through the insertion portion 64 of the central string threading portion 60 and pulled toward the side string threading portion 50 located in front of the insertion portion 64, so that the lower portion 30B is obliquely forward. Moreover, the upward tensile force F2 acts.

Since the lower portion 30B of the tightening string 30 is in a state of being inserted into the insertion portion 64 of the central string threading portion 60, it is in a state of being pulled toward the pair of side string threading portions 50 located diagonally forward. In the central stringing portion 60, a pressing force F3 that presses the chin rest portion 28 toward the chin portion 4 of the wearer is applied. Since the chin rest 28 is made of a flexible elastic material and has flexibility, the chin rest 28 is deformed toward the chin 4 by the action of the pressing force F3 of the lower portion 30B. Is pressed.

As described above, in the medical mask 10 according to the present invention, the lip portion 22 of the mask body 20 is closely sealed to the wearer's face, so that the gas such as the anesthetic gas supplied to the inside is covered. It does not leak to the outside from the rear peripheral edge 21a of 21. In addition, since the chin rest 28 is pressed against the chin 4, the chin rest 28 does not shift from the chin 4 during wearing, and the hose 8 should be worn stably even when the hose 8 is connected. Can be done. Therefore, the medical mask 10 is provided with a mask body 20 having a double lip structure and a chin rest 28 having a lip portion 22 extending inward from the rear peripheral edge portion 21a of the mask body 20, thereby sealing the inside of the mask. And it is excellent in wearing feeling.

Referring to FIG. 7, the conventional medical mask 100 has a mask main body 120 and an attachment means 130 attached to the mask main body 120 via buckles 140 and 141. The attachment means 130 has an upper band 131 hung around the wearer's head 101 and a lower band 132 hung around the lower side of the face, and the wearer is placed in the central portion of the mask body 120. A hose 108 for supplying a gas such as an anesthetic gas or oxygen is attached to the airway. In such a conventional medical mask 100, it is necessary to attach it to the wearer's body via buckles 140 and 141, which is troublesome. In addition, when the wearer is in a supine position, the wearer's head is kept lifted while the upper and lower bands 131 and 132 are sequentially fixed via the buckles 140 and 142. , It will be a burden for the wearer.

In the medical mask 10 according to the present invention, the covering portion 21 and the chin rest portion 28 that cover the wearer's nostrils 2 and the mouth portion 3 can be fitted to the wearer's face by one fastening string 30. Therefore, the mounting operation can be performed relatively easily. For example, when attaching to a wearer in a supine position, the wearing assistant may lift the wearer's head 1 a little and hang the tightening string 30 as it is, so that the buckle type is used like the conventional medical mask 100. The mounting operation can be performed more easily and quickly than in the case of hanging around the head via the upper and lower bands 131 and 132 of the above and the case of hanging around the head via a rubber band having a plurality of adjusting holes. Further, since it is not necessary to lift the head 1 for a long time, the burden on the wearer can be reduced.

Since the slit 56 of the side string threading portion 50 is located on the front end portion 51 side opposite to the rear end portion 52 where the bent portion 55 to which the tightening string 30 is locked is located, the slit 56 is located behind and above the tightening string 30. It is possible to prevent the upper portion 30A pulled to the slit 56 from coming out of the slit 56. Further, since the slit 66 of the central string threading portion 60 is located on the rear end portion 62 side opposite to the front end portion 61 where the tightening string 30 is located, the lower portion 30B pulled forward and upward is the slit 66. It is possible to prevent the person from getting out of the room. Even when the tightening string 30 moves toward the slits 56 and 66, the slits 56 and 66 may have a width dimension smaller than the width dimension of the tightening string 30 in order to prevent the tightening string 30 from falling off. preferable. Further, the front end portion 51 of the side string threading portion 50 and the rear end portion 62 of the central string threading portion 60 function as stoppers for preventing the tightening string 30 from coming off from the insertion portions 54 and 64.

The side string threading portion 50 and the center string threading portion 60 are molded integrally or separately from the mask main body 20 and have flexibility, so that the fastening string 30 is to be unlocked. When the force is applied, it is deformed so as to absorb the force, and it is possible to prevent the tightening string 30 from coming off from the insertion portions 54 and 64.

1 Head 2 Nostrils 3 Mouth 4 Jaw 10 Medical mask 20 Mask body 21 Cover 21a Rear peripheral edge of cover 22 Lips 26, 27 Both sides of cover 28 Jaw rest 30 Tightening string 50 Side string threading part 51 Front end 54 Insertion 56 Slit 60 Central string threading 62 Rear end 64 Insert 66 Slit

Claims (2)

In a medical mask having a vertical direction, a horizontal direction, and a front-back direction, and having a mask main body and a tightening string connected to the mask main body.
The mask body is made of a soft elastic material, and has a coating portion that covers the nostrils and mouth of the wearer, a lip portion that extends inward from the entire circumference of the rear peripheral edge of the coating portion, and the coating portion. Has a chin rest that extends posteriorly from the lower end of the
The tightening cord is formed of one annular elastic member, and has a pair of annular side cord threading portions extending in the front-rear direction on the outer surfaces of both side portions of the covering portion and the outer surface of the chin rest portion. It is connected to the mask body via an annular central string threading portion extending in the front-rear direction.
The medical mask, wherein the chin rest is pressed against the wearer's chin by the chin strap in a state where the tie strap is hung around the wearer's head. The side string threading portion and the central string threading portion are integrally molded with the mask body, and the insertion portion through which the fastening string is inserted and the fastening string are inserted into the insertion portion, respectively. The medical use according to claim 1, further comprising a slit for insertion, the slit of the side stringing portion is located on the front end side, and the slit of the center stringing portion is located on the rear end side. mask.

Images