Mask for respiration

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Technical field to which the invention belongs]

The present invention relates to a breathing mask, and more particularly to a support structure of a mask body for a wearer.

【0002】

[Conventional technology]

In general, CPAP (Continuous Positive Airway Pressure) (CPAP) is used as a method for treating patients with sleep apnea syndrome.

【0003】

In addition, as a method for treating patients with poor ventilation, nasal intermittent positive pressure ventilation (NIPPV (Nasal Intermittent Positive Pressure Ventilation)) is performed.

【0004】

Respiratory masks are used for these treatments. Conventionally, as disclosed in USP 5,243,971, this breathing mask includes a mask body having a thin film attached to a body cover, while being attached to the mask body to attach the mask body to the wearer. Equipped with headgear.

【0005】

The wearer fixes the mask body to the face with a headband so that the mask body of the breathing mask covers the nose. On the other hand, since the mask body is supplied with positive pressure intake gas from the pump, the wearer inhales this intake gas.

【0006】

[Problems to be Solved by the Invention]

As described above, in the mask body of the conventional breathing mask, a fixing piece extends upward from the upper part of the body cover. Further, headband mounting pieces are formed on both sides of the main body cover.

【0007】

Therefore, when the mask body is attached, the fixed piece passes between the eyebrows and the tip abuts on the forehead to support the mask body.

【0008】

On the other hand, the headband includes a lower band and an upper band. The lower band passes behind the head from one mounting piece and extends to the other mounting piece. The upper band extends from one side of the tip of the fixation piece to the other side of the tip of the fixation piece, passing behind the head, much like the lower band. Alternatively, the upper band passes from the tip of the fixed piece through the upper part of the head and is connected to the lower band behind the head.

【0009】

However, since this conventional breathing mask supports the mask body with the forehead, the fixed piece passes between the eyebrows. As a result, the wearer has a problem that the field of vision is obstructed, which is extremely troublesome.

【0010】

In addition, when the headband passes through the upper part of the head, there is a problem that the hair styling is disturbed.

【0011】

Further, although the above-mentioned breathing mask breathes through the nose, there is a problem that a sufficient effect is not exhibited when the mouth is opened because the wearer is not restricted to the state where the mouth is closed.

【0012】

The present invention has been made in view of these points, and an object of the present invention is to prevent the view from being obstructed when the mask body is worn, to prevent the hair styling from being disturbed, and to make it difficult to open the mouth. It is a thing.

【0013】

[Means for solving problems]

In the present invention, the fixing piece is extended downward from the lower part of the main body cover so that the fixing piece abuts on the lower jaw to support the mask main body.

【0014】

In order to achieve the above object, the means taken by the present invention first includes a mask body through which respiratory gas flows in and out, and a support band for holding the mask body on the wearer's face. It is intended for breathing masks that are attached to a person's face to supply inspiratory gas to the nose.

【0015】

The mask main body includes a main body cover, a nozzle connected to the main body cover to allow breathing gas to flow, and a flexible sealing member attached to the main body cover and in close contact with the wearer's face. ing. Further, the main body cover is formed with a fixing piece that extends downward from the lower part of the main body cover and abuts on the lower jaw of the wearer to support the main body cover. In addition, the mask body is provided with connecting means for attaching the support band.

【0016】

Further, the connecting means is formed on both sides of the main body cover and on each of the mounting pieces, and is also formed on both sides of the fixing piece to support the mask main body from four directions. As described above, it may be composed of a mounting hole for mounting the support band.

【0017】

Further, the mounting holes may be formed so that the support band winds around the head through the wearer's cheeks.

【0018】

Further, the nozzle may have a circular opening that expands in the exhaled gas discharge direction and may be formed with a leak hole for discharging the exhaled gas of the wearer.

【0019】

In addition, the above mask body is 50 cm³~ 100cm³It may be set to the space capacity of.

【0020】

Further, the fixed piece may include a pad in contact with the lower jaw.

【0021】

That is, in the above invention, with the support band attached to the mask body, the mask body is attached to the face so that the support band passes from the back of the head to the cheeks. Then, when the mask body is inserted into the wearer's nose, the fixing piece traverses the wearer's mouth, and the lower end of the fixing piece comes into contact with the lower part of the lower lip. Further, when the length of the support band is adjusted to fix the mask body to the face, the mask body covers the entire nose.

【0022】

On the other hand, when the positive pressure intake gas is supplied from the nozzle of the mask body, the intake gas is supplied to the inside of the mask body. Then, the wearer who is the patient inhales the inspiratory gas. The exhaled gas exhaled by the wearer passes through the nozzle of the mask body and is discharged to the outside through the leak hole.

【0023】

Further, when the mask body is attached to the face, the pad of the fixed piece comes into contact with the lower jaw, so that the opening of the mouth is restricted and the wearer semi-forcedly inhales the inspiratory gas.

【0024】

[Effect of the invention]

Therefore, according to the present invention, when the mask body is worn, the fixed piece comes into contact with the lower jaw, so that the field of view is not obstructed as in the conventional case. As a result, it is possible to surely eliminate the troublesomeness at the time of mounting.

【0025】

In particular, since the wearing time is often long, it is possible to significantly reduce the discomfort of wearing.

【0026】

Also, since the support band passes through the cheeks, the support band does not pass through the upper part of the head. As a result, it is possible to reliably prevent the hair styling from being disturbed.

【0027】

In addition, since the fixed piece abuts on the lower jaw, it is possible to restrain the opening of the mouth. By this restraint, breathing through the nose can be surely promoted, and the therapeutic effect can be surely exerted.

【0028】

Further, since the mask body is supported in four directions by the support band, the mask body is surely held by the wearer. As a result, it is possible to reliably prevent situations such as the mask body coming off during sleep.

【0029】

Further, since the leak hole is formed so as to expand outward, the exhaust noise can be surely reduced.

【0030】

Further, since the space capacity of the mask body is reduced to a predetermined amount, the residual carbon dioxide in the mask body can be reduced. As a result, at the time of re-inspiration, the wearer inhales air having a low carbon dioxide concentration, and the treatment can be optimized.

【0031】

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

【0032】

As shown in FIG. 1, the respiratory mask 10 of the present embodiment is a medical mask used for the treatment of CPAP and NIPPV.

【0033】

The breathing mask 10 includes a mask body 20 and a support band 30 for holding the mask body 20 on the face of the wearer 11. Then, as shown in FIGS. 2 to 5, the mask main body 20 includes a main body cover 40, a nozzle 50, and a seal member 60.

【0034】

The main body cover 40 is formed of a synthetic resin material, and includes a main body portion 41 having a substantially triangular shape when viewed from the front, a mounting piece 46 of a support band 30, and a fixing piece 70 at the time of mounting. The main body 41 is formed in a substantially triangular shape when viewed from the front, and as shown in FIG. 6, is formed in a shell shape slightly protruding forward and is formed in an abbreviated vertical cross section.

【0035】

A central opening 42 into which the end portion of the nozzle 50 is inserted and connected is formed in the central portion of the main body portion 41. Further, on the peripheral edge of the main body 41, a flange 43 for attaching the seal member 60 is formed so as to project rearward.

【0036】

An annular protrusion 44 projecting outward is formed on the outer peripheral surface of the flange 43. Further, a stepped portion 45 having a recessed outer peripheral surface is formed at the rear end portion of the flange 43.

【0037】

The mounting piece 46 is integrally formed with the main body 41 on both side surfaces of the main body 41 of the main body cover 40. The mounting piece 46 extends obliquely upward from the lower half of the two hypotenuses of the main body 41. A mounting hole 47 for the support band 30 is formed at the tip of the mounting piece 46. The mounting holes 47 are formed in the vertical direction.

【0038】

The fixing piece 70 is one of the features of the present invention, and is formed integrally with the main body portion 41 at the lower part of the main body portion 41 of the main body cover 40. The fixing piece 70 extends downward from the bottom of the main body 41. The fixing piece 70 is composed of a narrow throat portion 71 continuous with the bottom of the main body portion 41 and a wide abutting portion 72 continuous with the throat portion 71. Mounting holes 74 are formed on both sides of the throat portion 71. The mounting holes 74 are formed in the vertical direction.

【0039】

Then, the connecting means 13 of the support band 30 is configured by the mounting pieces 46, the mounting holes 47 of the mounting pieces 46, and the mounting holes 74 of the fixing pieces 70.

【0040】

As shown in FIG. 1, the contact portion 72 of the fixing piece 70 is formed so as to correspond to the lower jaw of the wearer 11. A pad 73 is attached to the back surface of the contact portion 72. That is, the fixing piece 70 is configured so as to traverse the mouth of the wearer 11 and the pad 73 abuts below the lower lip.

【0041】

The pad 73 is formed of a flexible material such as a slightly hard sponge or rubber, and is formed in a rectangular shape. That is, the pad 73 has a soft contact so as not to cause discomfort or pain when worn. Further, although the pad 73 is attached to the contact portion 72, it may be detachably attached to the contact portion 72 via a hook-and-loop fastener or the like.

【0042】

The nozzle 50 is formed of a cylindrical pipe through which respiratory gas flows. The nozzle 50 is formed in an inverted L shape with the horizontal portion 51 and the vertical portion 52. One end of the horizontal portion 51 is inserted into the central opening 42 of the main body cover 40 and is rotatably fixed by the ring 21. A supply pipe 12 for supplying positive pressure intake gas is connected to the lower end of the vertical portion 52. Although not shown, the supply pipe 12 is connected to a pump or the like to guide the intake gas to the inside of the mask main body 20.

【0043】

As shown in FIG. 7, two leak holes 53 are formed on both side surfaces of the front surface of the vertical portion 52 of the nozzle 50. The leak hole 53 is a hole for discharging the exhaled gas of the wearer 11, and is formed in a circular shape such as a perfect circle or an ellipse. Further, the leak hole 53 is one of the features of the present invention, and is formed in a trapezoidal cross section so as not to generate exhaust noise. That is, the peripheral surface 54 of the leak hole 53 is formed on a tapered surface that spreads in the discharge direction.

【0044】

The sealing member 60 has a double structure consisting of an outer sealing material 6A and an inner sealing material 6B. The outer sealing material 6A is formed of a thin film made of a flexible material such as silicone rubber. As shown in FIGS. 8 to 10, the outer sealing material 6A adheres around the nose and seals between the nose and the main body cover 40, and forms a substantially triangular tubular body portion 61. I have. One end surface of the body portion 61 is opened, and the top surface portion 62 is continuously formed on the other end surface. The top surface portion 62 is formed in a substantially hemispherical shape, and an insertion port 63 into which the nose of the wearer 11 is inserted is formed.

【0045】

Further, a thick portion 64 to be fitted to the outside of the flange 43 of the main body cover 40 is formed on the peripheral edge of the opening of the body portion 61 in the outer sealing material 6A. An annular groove 6a that fits into the annular protrusion 44 is formed on the inner peripheral surface of the thick portion 64.

【0046】

The inner sealing material 6B is formed of a thin film made of a flexible material such as silicon rubber, and is formed to be slightly harder than the outer sealing material 6A. As shown in FIGS. 11 to 13, the inner sealing material 6B is formed in a short substantially triangular tubular shape, and both end faces are open.

【0047】

On the front end surface of the inner sealing material 6B, a recess 65 that abuts on the upper jaw is formed at the bottom of the end face, and a recess 66 that abuts on the nasal column is formed at the apex. There is.

【0048】

A thick portion 67 slightly protruding inward is formed on the back peripheral edge portion of the inner sealing material 6B. The thick portion 67 is formed with a circumferential groove 6b into which the stepped portion 45 of the flange 43 of the main body cover 40 is inserted. The circumferential groove 6b is open to the end face of the thick portion 67.

【0049】

The space capacity of the mask body 20 is 50 cm.³~ 100cm³Is formed in. That is, when the sealing member 60 is attached to the main body cover 40, the space surrounded by the main body cover 40 and the outer sealing material 6A is 50 cm.³~ 100cm³It is formed so as to have the volume of. Preferably, the space capacity of the mask body 20 is 60 cm.³~ 90cm³Is formed in.

【0050】

When the mask body 20 is formed into a large space capacity, the carbon dioxide concentration becomes high. In other words, the conventional breathing mask of this kind is 130 cm.³It was set to the capacity of. When the mask body 20 is formed to have the same space capacity as the conventional one, the exhaled gas of the wearer 11 is discharged to the mask body 20, so that the carbon dioxide remaining in the exhaled gas increases. Therefore, at the time of re-inspiration, the wearer 11 inhales air having a high carbon dioxide concentration.

【0051】

Therefore, in the present embodiment, the space capacity of the mask body 20 is 60 cm.³~ 90cm³I am trying to form it.

【0052】

The support band 30 is made of an elastic member, and is composed of an upper band 3A and a lower band 3B. The upper band 3A and the lower band 3B are configured to hold the mask body 20 on the face of the wearer 11 from four directions as a feature of the present invention. That is, the upper band 3A and the lower band 3B extend from the mask body 20 through the cheeks of the wearer 11 to the back of the head, and hold the mask body 20 on the face so as to be pulled from two places on both sides.

【0053】

The upper band 3A is formed of a rectangular rear contact piece 31 located on the back of the head and a pair of band pieces 32 extending to the left and right from the rear contact piece 31. The tip of the band piece 32 is inserted into the mounting hole 47 of the mounting piece 46 and folded back. Although not shown, the tip of the strip 32 is detachably and closely connected to the central portion of the strip 32 by, for example, a hook-and-loop fastener.

【0054】

The lower band 3B is formed of a rectangular rear contact piece 33 located on the back of the head and a pair of band pieces 34 extending to the left and right from the rear contact piece 33. The tip of the band piece 34 is inserted into the mounting hole 74 of the fixing piece 70 and folded back. Although not shown, the tip of the strip 34 is detachably and closely connected to the central portion of the strip 34 by, for example, a hook-and-loop fastener.

【0055】

The rear contact piece 31 of the upper band 3A and the rear contact piece 33 of the lower band 3B are detachably and closely connected to each other by, for example, a hook-and-loop fastener.

【0056】

<Action> Next, the usage state of the breathing mask 10 described above will be described.

【0057】

First, the mask body 20 is attached to the face with the seal member 60 attached to the body cover 40. That is, in the main body cover 40, the inner sealing material 6B of the sealing member 60 is inserted into the outer sealing material 6A, and the stepped portion of the flange 43 in the main body cover 40 is inserted into the circumferential groove 6b of the thick portion 67 of the inner sealing material 6B. 45 is inserted, and the annular groove 6a of the thick portion 64 of the body portion 61 of the outer sealing material 6A is fitted into the annular protrusion 44 of the flange 43 of the main body cover 40.

【0058】

Then, with the upper band 3A and the lower band 3B attached to the mask body 20, the mask body 20 is attached to the face so that the upper band 3A and the lower band 3B pass through the cheeks from the back of the head.

【0059】

When the insertion port 63 of the outer sealing material 6A is inserted into the nose of the wearer 11, the fixing piece 70 traverses the mouth of the wearer 11 and the pad 73 comes into contact with the lower part of the lower lip. Further, by adjusting the lengths of the upper band 3A and the lower band 3B, the mask body 20 covers the entire nose.

【0060】

On the other hand, when the nozzle 50 of the mask body 20 is connected to the supply pipe 12 and the intake gas of positive pressure is supplied, the intake gas is supplied to the mask body 20 and the wearer 11 who is the patient inhales the intake gas. ..

【0061】

The exhaled gas exhaled by the wearer 11 passes through the nozzle 50 of the mask body 20 and is discharged to the outside through the leak hole 53. At that time, since the leak hole 53 expands toward the outside, a small exhaust noise is produced.

【0062】

Further, when the mask body 20 is attached to the face, the pad 73 of the fixed piece 70 comes into contact with the lower jaw, so that the opening of the mouth is restricted and the wearer 11 semi-forcedly inhales the inspiratory gas.

【0063】

<Effect of the Embodiment> As described above, according to the present embodiment, when the mask body 20 is attached, the fixing piece 70 comes into contact with the lower jaw, so that the field of vision is not obstructed as in the conventional case. As a result, it is possible to surely eliminate the troublesomeness at the time of mounting.

【0064】

In particular, since the wearing time is often long, it is possible to significantly reduce the discomfort of wearing.

【0065】

Further, since the support band 30 passes through the cheeks, the support band 30 does not pass through the upper part of the head. As a result, it is possible to reliably prevent the hair styling from being disturbed.

【0066】

Further, since the pad 73 of the fixing piece 70 comes into contact with the lower jaw, it is possible to restrain the opening of the mouth. Breathing through the nose can be reliably promoted, and the therapeutic effect can be reliably exerted.

【0067】

Further, since the mask body 20 is supported in four directions by the support band 30, the mask body 20 is securely held by the wearer 11. As a result, it is possible to reliably prevent situations such as the mask body 20 coming off during sleep.

【0068】

Further, since the leak hole 53 is formed so as to expand outward, the exhaust noise can be reliably reduced.

【0069】

Further, since the space capacity of the mask main body 20 is reduced to a predetermined amount, the residual carbon dioxide in the mask main body 20 can be reduced. As a result, at the time of re-inspiration, the wearer 11 inhales air having a low concentration of carbon dioxide, and the treatment can be optimized.

【0070】

[Other Embodiments of the Invention]

In the above embodiment, the seal member 60 is configured to have a double structure, but the present invention may have a single structure, and the shape of the main body cover 40 and the like is not limited to the embodiment.

[Simple explanation of drawings]

[Figure 1]

It is a perspective view which shows the state which wears the breathing mask.

[Figure 2]

It is a front view which shows the mask main body.

[Fig. 3]

It is a top view which shows the mask body.

[Fig. 4]

It is a central vertical sectional view which shows the mask main body.

[Fig. 5]

It is a rear view which shows the main body cover.

[Fig. 6]

It is a central vertical sectional view which shows the main body cover.

[Fig. 7]

It is a cross-sectional view which shows the vertical part of a nozzle.

[Fig. 8]

It is a front view which shows the outer seal material of a seal member.

[Fig. 9]

It is a rear view which shows the outer sealing material.

[Fig. 10]

It is a central vertical sectional view which shows the outer sealing material.

[Fig. 11]

It is a front view which shows the inner sealing material of a sealing member.

[Fig. 12]

It is a back view which shows the inner sealing material.

[Fig. 13]

It is a bottom view which shows the inner sealing material.

[Explanation of symbols]

10 Breathing mask 11 Wearer 13 Connecting means 20 Mask body 30 support band 3A upper band 3B lower band 40 Body cover 46 Mounting piece 47 Mounting holes 50 nozzles 53 Leak hole 60 Seal member 6A Outer sealing material 6B Inner sealing material 70 fixed piece 72 Contact 73 pad 74 Mounting holes