CN209771057U

CN209771057U - Breathing mask

Info

Publication number: CN209771057U
Application number: CN201821966452.5U
Authority: CN
Inventors: 敬博炜; 李小苗
Original assignee: BEIJING YAGUO SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: BEIJING YAGUO SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2018-11-27
Filing date: 2018-11-27
Publication date: 2019-12-13
Anticipated expiration: 2028-11-27

Abstract

The utility model relates to a breathing mask, including the inlet channel and the exhaling passageway that have open-ended face guard body and be linked together with the face guard chamber that the face guard body formed, still including fixing the isolating device in the face guard intracavity. The isolating device divides the mask cavity into a first cavity and a second cavity, the first cavity is far away from the opening end of the mask cavity, and the second cavity is close to the opening end of the mask cavity. The air inlet channel is communicated with the first cavity, the air outlet channel is communicated with the second cavity, the isolating device is of a one-way conduction structure, and the conduction direction of the isolating device is from the first cavity to the second cavity. The utility model discloses a respirator can use with breathing sputum discharging all-in-one or noninvasive ventilator is supporting, has avoided the pollution of the face mask chamber of exhaled gas and exhaust sputum, has effectively reduced the volume of "dead space".

Description

breathing mask

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to respirator.

background

The respirator that present noninvasive ventilator used has full face guard, mouth nose face guard, nose face guard etc. for increasing the travelling comfort of wearer and avoiding face guard end gas leakage, adopts silica gel material with the facial laminating of people around the face guard. The breathing machine function difference that uses is because of the breathing machine function difference of using at present for the breathing machine face guard of taking expiration exhaust hole certainly that sleep treatment used also has the breathing machine face guard that does not take the exhaust hole that is used for clinical noninvasive treatment to use, and these face guards are all when patient breathes in, and the input end is connected to the face guard provides fresh air, and the gas of breathing out is discharged through the exhaust hole that sets up in the face guard side when patient exhales, perhaps sets up the discharge valve aside at the pipeline.

Both the above-mentioned masks with vents for sleeping use and the above-mentioned masks without vents for clinical use have a certain "dead space", i.e. a ventilation part that cannot take part in gas exchange, such as: the nasal cavity, the main bronchus and other cavities, and the mask cavity formed by the mask can also be regarded as an artificial dead space, and the exhausted waste gas in the dead space can be sucked back when the patient inhales, so that the treatment effect can be greatly influenced.

In the two noninvasive breathing masks, the dead space is generally reduced by adjusting the position of the exhaust hole or the exhaust valve as close as possible to the mouth end of the patient, but the effect is not ideal. In addition, no specially-applicable mask is available for the integrated machine for breathing and sputum excretion, and the problem of 'dead space' can also exist. Therefore, how to effectively reduce the "dead space" of the breathing mask is a problem that needs to be solved.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

in order to solve the above problems in the prior art, the utility model provides a breathing mask has solved the problem in the "dead space" space that can't effectively reduce to exist among the prior art.

(II) technical scheme

In order to achieve the above object, the utility model discloses a main technical scheme include:

The utility model provides a breathing mask, which comprises a mask body with an opening, an air inlet channel and an air outlet channel which are communicated with a mask cavity formed by the mask body, and an isolating device fixed in the mask cavity; the isolating device divides the mask cavity into a first cavity and a second cavity, wherein the first cavity is far away from the opening end of the mask cavity, and the second cavity is close to the opening end of the mask cavity; the air inlet channel is communicated with the first cavity, the air outlet channel is communicated with the second cavity, the isolating device is of a one-way conduction structure, and the conduction direction of the isolating device is from the first cavity to the second cavity.

Optionally, the isolation device comprises an isolation body fixed in the mask cavity and an isolation piece capable of opening and closing; the isolation body and the isolation piece are both hollow pieces and are communicated to form a sealed accommodating cavity; when the partition piece is opened, the partition device divides the mask cavity into a first cavity and a second cavity which are independent of each other; when the isolating piece is closed, the isolating device enables the first chamber and the second chamber to be communicated in a single direction.

Optionally, the isolation body is arranged in the middle of the mask cavity, and the isolation pieces are arranged in a circle along the circumferential direction of the outer side of the isolation body.

Optionally, the isolation body is provided with a high-pressure delivery pipe and a vacuum suction pipe, and the isolation part is an air bag made of flexible materials.

optionally, the isolation body is provided with a high-pressure delivery pipe, the mask body is provided with an exhaust valve communicated with the isolation body, and the isolation part is an air bag made of flexible material.

Optionally, the isolation body is provided with a heating device and a cooling device, and the isolation piece is made of shape memory alloy.

Optionally, the isolation body is made of rigid material; and/or the mask body is also provided with a safety valve communicated with the first chamber.

Optionally, the exhalation channel is an exhalation sputum excretion tube, and the mouth of the exhalation sputum excretion tube is close to the mouth of the patient.

Optionally, an expiratory check valve is arranged at the mouth of the expiratory sputum-discharging tube.

Optionally, the exhalation passage is an exhaust hole or an exhaust valve provided on the mask body.

(III) advantageous effects

The utility model has the advantages that:

The utility model discloses a set up isolating device in the face guard intracavity to cut apart into two cavities with the face guard chamber, and isolating device is the one-way conduction structure, just can keep apart one side in the face guard chamber with the air current of exhalation and discharge by corresponding breathing passage when the patient exhales like this, prevented that the sputum that the gas of exhalation and/or sputum excretion came out from to the pollution and the pollution to inlet channel of whole face guard chamber, and then effectively reduced the volume of "dead chamber", improved treatment.

drawings

Fig. 1 is a schematic structural view of a respiratory mask provided in the following embodiment;

FIG. 2 is a schematic view of a patient in an expiratory or expectorant state according to the following embodiments;

FIG. 3 is a schematic illustration of a patient in an inspiratory state provided by the following example;

Fig. 4 is a schematic view of a patient in a special case of inhalation provided by the following embodiment.

[ description of reference ]

1: a mask body; 11: a gasket; 12: a safety valve; 2: an air intake passage; 3: an isolation device; 31: an isolation body; 32: a spacer; 33: a high-pressure delivery pipe; 34: a vacuum suction tube; 4: an expiration sputum discharging tube; 41: an expiratory check valve.

Detailed Description

for a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.

the embodiment provides a breathing mask, which comprises a mask body 1, an air inlet channel 2, a breathing channel and an isolating device 3, wherein the mask body 1 is provided with an opening, and the air inlet channel 2 and the breathing channel are communicated with a mask cavity formed by the mask body 1. Isolating device 3 divides into first cavity and second cavity with the face guard chamber, and the open end in face guard chamber is kept away from to first cavity, and the open end in face guard chamber is close to the second cavity, and inlet channel 2 is linked together with first cavity, and exhale the passageway and be linked together with the second cavity. The isolating device is of a one-way conduction structure, and the conduction direction of the isolating device is from the first chamber to the second chamber.

From this, this embodiment is through setting up isolating device 3 in order to cut apart into two cavities with the face guard cavity at the face guard intracavity, and isolating device 3 is one-way conduction structure, just so can keep apart the one side of exhaled air current in the face guard cavity and discharge by corresponding breathing passage when the patient exhales, prevented the pollution and the pollution of inlet channel 2 of the whole face guard cavity of sputum that exhaled gas and/or sputum excretion came out, and then effectively reduced the volume of "dead space", improved treatment.

In practical applications, the mask body 1 can generally surround at least the mouth and the nose of a patient, that is, the mask body 1 can be an oral-nasal mask, a full-face mask or a helmet mask, and a sealing gasket 11 can be further disposed at a position where the mask body 1 is attached to the face of the patient, so as to increase the sealing performance. The specific structure of the mask body 1 is the prior art, and the application does not limit the structure.

In addition, in order to avoid the increase of the inhalation resistance of the patient under the special condition that the air inlet channel 2 can not normally provide positive pressure airflow, a safety valve 12 communicated with the first chamber is arranged on the mask body 1. Thus, in this particular case, the safety valve 12 will open automatically under the effect of the negative pressure, to avoid discomfort to the patient due to the increased resistance to inspiration.

in the embodiment of the present application, the isolation device 3 includes an isolation body 31 fixed in the mask cavity and an isolation member 32 capable of being opened and closed, the isolation body 31 and the isolation member 32 are both hollow members, and they are communicated to form a closed accommodating cavity. When the partition 31 is opened, the partition 3 divides the mask cavity into a first chamber and a second chamber which are independent of each other; when the partition 31 is closed, the first chamber and the second chamber are communicated in a single direction by the partition 3. Therefore, the one-way conduction function of the isolation device 3 can be realized by controlling the opening and closing of the isolation piece 31, and the device is simple and convenient and is suitable for large-scale application. Here, the term "independent" means that the first chamber and the second chamber are not in communication with each other.

The isolation body 31 may be fixed in the mask cavity in any manner, for example, it may be fixed with the mask cavity by a buckle, or may be fixed with the air inlet channel 2 or the breathing channel by a fixing device, as long as the isolation body 31 can be fixed in the mask cavity, and this embodiment does not limit this.

In a specific use process, the isolation body 31 is made of a rigid material, such as plastic or steel plate, so that the isolation device 3 can be more stable in the mask cavity.

In practical applications, the isolation body 31 may be disposed at the middle position of the mask cavity, and the isolation members 32 are disposed in a circle along the circumference of the outer side of the isolation body 31. The opening and closing of the partition 32 can be realized by the following three structural modes:

the first method comprises the following steps: referring to fig. 1, the isolation body 31 is provided with a high pressure delivery pipe 33 and a vacuum suction pipe 34, and the isolation member 32 is a flexible material balloon.

Specifically, the air inlet end of the high-pressure delivery pipe 33 and the air outlet end of the vacuum suction pipe 34 extend from the cavity of the isolation body 31 to the outside of the mask cavity, and are connected to a high-pressure delivery pump and a vacuum pump respectively outside the mask cavity, and are respectively used for delivering high-pressure air or vacuumizing to the closed accommodating cavity formed by the isolation body 31 and the isolation piece 32. The spacer 32 is formed by a bladder made of a flexible material, such as plastic, elastomer, or silicone. When high-pressure gas is conveyed into the accommodating cavity through the high-pressure conveying pipe 33, the air bag expands and automatically forms a seal with the inner wall of the mask cavity, and at the moment, the partition piece 32 is opened to divide the mask cavity into a first cavity and a second cavity which are independent of each other. When the vacuum suction pipe 34 is used for vacuumizing the accommodating cavity, the air bag automatically contracts, the partition piece 32 is closed at the moment, and the air inlet channel 2 can normally convey fresh air to the patient.

And the second method comprises the following steps: the isolation body 31 is provided with a high-pressure delivery pipe 33, the mask body 1 is provided with an exhaust valve communicated with the interior of the isolation body 31, and the isolation part 32 is an air bag made of flexible materials.

Specifically, in this case, the airbag is opened as in the first process. The closing of the air bag is realized by opening the exhaust valve to discharge the high-pressure air in the accommodating cavity, and because the air pressure in the mask cavity is higher than the air pressure in the partition 32 when the air is sucked, the high-pressure air in the accommodating cavity can be automatically discharged after the exhaust valve is opened.

And the third is that: the isolation body 31 is provided with a heating device and a cooling device, and the isolation piece 32 is made of shape memory alloy.

Specifically, a shape memory alloy is a novel material having a special function, which is called a shape memory alloy because it can be restored to its original shape by heating or cooling when it is deformed, and it can permanently remember its shape at a certain temperature. Thus, the spacer 32 of material may be provided in two shapes, one in an open state to automatically seal the spacer 32 to the inner wall of the mask cavity and the other in a closed state to allow unidirectional conduction through the isolation device 3. In this way, the opening and closing of the partition 32 can be achieved by heating and cooling the partition 32 by the heating device and the cooling device, respectively. However, the shape memory alloy can be restored to the preset shape under heating or cooling is the prior art, and the application is not limited to this.

Alternatively, the isolation body 31 may be fixedly arranged along the inner wall of the mask cavity in a circle, the isolation member 32 is arranged in the middle of the mask cavity, and the isolation member 32 is designed as an exhaust valve, so that the isolation member 32 can be opened and closed by opening and closing the exhaust valve.

Of course, the setting of the positional relationship between the isolation body 31 and the isolation member 32, and the setting of the material and the structure of the isolation member 32 can be realized by any other method, which is only an example and is not limited in this embodiment. It should be noted that, when the structure and shape of the isolation device 3 are designed to be large, the ventilation area when the isolation member 32 is closed needs to meet the requirement of the inspiration flow so as to meet the requirement of the patient for inspiration.

in practical application, the isolating device 3 can be used for a noninvasive breathing mask used by a noninvasive breathing and sputum excretion all-in-one machine, a noninvasive breathing mask used for sleep treatment and a noninvasive breathing mask used for clinical noninvasive treatment. Meanwhile, the breathing mask needs to be matched with a corresponding respirator for use, and the work of adjusting the isolation device 3 is carried out by detecting the breath of a patient. The method comprises the following specific steps:

First, when being applied to among the noninvasive breathing sputum excretion all-in-one, refer to fig. 1, foretell breathing passage is for being used for exhaling sputum excretion pipe 4 with the sputum discharge of patient's expiratory airflow and sputum excretion, and the mouth of pipe of this exhaling sputum excretion pipe 4 is close to patient's oral area setting. When in specific use, the mouth of the expiratory sputum-discharging tube 4 is further provided with an expiratory check valve 41 under the condition so as to control the flow direction of the expiratory airflow. The whole process of breathing and sputum excretion is as follows:

as shown in fig. 2, which is a schematic diagram of the state of the patient exhaling or sputum excretion, when the patient exhales, the exhalation check valve 41 is opened, and the isolation member 32 of the isolation device 3 is in an open state, so as to automatically form a seal with the inner wall of the mask cavity, for example, the isolation member 32 may be opened by any of the methods described above. At this moment, the gas exhaled by the patient and the discharged sputum are discharged from the exhalation sputum discharging tube 4, the isolating device 3 isolates the exhaled airflow at one side (namely, in the second cavity) in the mask cavity and is discharged from the exhalation sputum discharging tube 4, and the pollution of the exhaled gas and the discharged sputum to the whole mask cavity and the pollution to the air inlet channel 2 are avoided. Meanwhile, as the pipe orifice of the expiration sputum discharging pipe 4 is close to the mouth of the patient, the expired gas and the discharged sputum can be discharged from the expiration sputum discharging pipe 4 better, and the volume of a dead cavity in the mask cavity is effectively reduced.

As shown in fig. 3, when the patient inhales, the exhalation check valve 41 is closed, and the partition member 32 of the partition device 3 is in a closed state, and fresh air is supplied from the air intake passage 2. Compared with the prior art, when exhaling, exhaled gas and/or discharged sputum can not be completely discharged from the exhalation channel, so that exhaled gas and/or discharged sputum can pollute the whole mask cavity, when inhaling, the fresh air provides positive pressure, and then exhaled gas and/or discharged sputum remained in the whole mask cavity can be inhaled by the patient again, and the volume of a dead cavity is large.

And set up isolating device 3 back in this embodiment, can make the gas of exhalation and/or exhaust sputum keep apart in the second chamber when exhaling, simultaneously because the mouth of pipe of exhaling sputum discharging tube 4 is close to patient's oral area and also makes the gas of exhalation and/or exhaust sputum discharge through exhaling sputum discharging tube 4 as far as possible, consequently remain in the gaseous and/or exhaust sputum of exhalation of face guard intracavity and compare significantly reduced among the prior art, effectively reduced "dead space" volume promptly.

as shown in fig. 4, when the patient inhales, the exhalation check valve 41 is closed, if the special situation that the air inlet channel 2 cannot normally provide positive pressure airflow is encountered at this time, the safety valve 41 will automatically open under the negative pressure effect in the mask cavity, and the outside air enters the mask cavity, so that the discomfort of the patient caused by the increase of the inhalation resistance is avoided.

Second, when being applied to among the noninvasive respirator that sleep treatment used, foretell breathing passage is for establishing the exhaust hole on face guard body 1, still is equipped with the exhaust check valve in exhaust hole department this moment, and specific respiratory process is as follows:

When the patient exhales, the exhaust check valve is opened, the isolating piece 32 of the isolating device 3 is in an open state, and the gas exhaled by the patient is exhausted from the exhaust hole. When the patient inhales, the exhaust check valve is closed, the isolating piece 32 of the isolating device 3 is in a closed state, and fresh air is fed from the air inlet channel 2. In the special case described above, which occurs when the patient inhales, the safety valve 41 opens automatically. Compared with the prior art, the volume of the dead space is effectively reduced.

Third, when being applied to clinical noninvasive breathing mask that noninvasive treatment used, foretell breathing passage is for establishing the discharge valve on face guard body 1, and specific respiratory process is as follows:

When the patient exhales, the exhaust valve is opened, and the partition 32 of the partition device 3 is in an open state, and the patient exhales through the exhaust valve. During inspiration of the patient, the outlet valve is closed, the partition 32 of the partition 3 is closed and fresh air is fed through the inlet channel 2. In the special case described above, which occurs when the patient inhales, the safety valve 41 opens automatically. Compared with the prior art, the volume of the dead space is effectively reduced.

while the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A breathing mask comprises a mask body (1) with an opening, and an air inlet channel (2) and an air outlet channel which are communicated with a mask cavity formed by the mask body (1), and is characterized by further comprising an isolating device (3) fixed in the mask cavity;

The isolation device (3) divides the mask cavity into a first cavity and a second cavity, wherein the first cavity is far away from the open end of the mask cavity, and the second cavity is close to the open end of the mask cavity;

The air inlet channel (2) is communicated with the first cavity, the exhalation channel is communicated with the second cavity, the isolating device (3) is of a one-way conduction structure, and the conduction direction of the isolating device is guided to the second cavity from the first cavity.

2. A breathing mask according to claim 1, wherein the isolation device (3) comprises an isolation body (31) fixed inside the mask cavity and an openable and closable isolator (32);

The isolation body (31) and the isolation piece (32) are both hollow pieces and are communicated with each other to form a sealed accommodating cavity;

When the partition (32) is opened, the partition device (3) divides the mask cavity into the first chamber and the second chamber which are independent of each other;

When the partition (32) is closed, the first chamber and the second chamber are communicated in a single direction by the isolating device (3).

3. The respiratory mask of claim 2,

The isolation body (31) is arranged in the middle of the mask cavity, and the isolation pieces (32) are arranged in a circle along the circumferential direction of the outer side of the isolation body (31).

4. a respiratory mask according to claim 3,

the isolation body (31) is provided with a high-pressure delivery pipe (33) and a vacuum suction pipe (34), and the isolation piece (32) is an air bag made of flexible materials.

5. A respiratory mask according to claim 3,

the mask is characterized in that a high-pressure conveying pipe (33) is arranged on the isolation body (31), an exhaust valve communicated with the isolation body (31) is arranged on the mask body (1), and the isolation piece (32) is an air bag made of flexible materials.

6. A respiratory mask according to claim 3,

The isolation body (31) is provided with a heating device and a cooling device, and the isolation piece (32) is made of shape memory alloy.

7. Breathing mask according to any one of claims 2 to 6, wherein the insulating body (31) is made of a rigid material; and/or

the mask body (1) is also provided with a safety valve (12) communicated with the first cavity.

8. breathing mask according to claim 7, wherein the exhalation path is an exhalation sputum trap (4) and the mouth of the exhalation sputum trap (4) is close to the patient's mouth.

9. The respiratory mask of claim 8,

An expiration one-way valve (41) is arranged at the pipe orifice of the expiration sputum discharging pipe (4).

10. breathing mask according to claim 7, wherein the exhalation path is a vent or exhaust valve provided on the mask body (1).