Face mask without forehead support

Abstract

The utility model provides a face mask without forehead support relates to medical instrument technical field, including cushion, first casing, second casing and intake tube subassembly, the cushion is equipped on the first casing and is distributed along the first casing close to the periphery of human body side, the first casing is equipped with air inlet and a plurality of vent holes, the second casing is equipped with the air inlet and a plurality of vent holes, the first casing is equipped with the air inlet, the second casing is equipped with the air inlet and a plurality of vent holes. The first shell is provided with an air inlet, the air inlet pipe assembly is connected with the air inlet, the second shell is arranged on the periphery of the first shell in a sleeving mode, two upper side arms and two lower side arms are formed on the second shell, and the unfolding length of the two upper side arms is set to be not smaller than the width of the face of the human body. Therefore, the supporting width of the upper side arm is increased, and the problems that the face of a patient is easily tightened by an existing forehead-free supporting mask and connection of the side arms is easily invalid are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, specifically, relate to a no forehead support mask. BACKGROUND

[0002] In the treatment process of sleep breathing diseases such as obstructive sleep apnea, positive pressure ventilation therapy is generally used, and the mask is an important part of the positive pressure ventilation therapy. At present, most of the no forehead support masks on the market adopt the mode of directly forming side arms on the cushion main body. Although this mode can save parts and reduce assembly steps, the exhaust holes and air inlets and other structures need to be arranged on the cushion main body, and the length of the side arm needs to be within the normal projection of the cushion main body to facilitate mold removal. The headband is generally made of elastic material, and when the headband is tied, the part of the headband that exceeds the side arm or the cushion main body will fit the human face, causing the patient to be tightly squeezed in the face when using the mask, especially the top headband needs to pass through most of the face area, causing discomfort to the patient, and even causing facial abrasions and other problems. Therefore, some masks add a connecting piece to connect with the side arm based on the above-mentioned mask, such as the no forehead support mask disclosed in Chinese patent CN215231323U. However, the connecting piece and the side arm are connected through repeated insertion, which may cause structural failure or even breakage, thus failing to meet the market demand. SUMMARY

[0003] The utility model discloses a no forehead support mask, which aims to improve the problem that the existing no forehead support mask is easy to cause facial injury to the patient and the connection of the side arm is easy to fail.

[0004] The utility model discloses the following scheme:

[0005] A no forehead support mask, comprising a soft pad, a first shell, a second shell and an air inlet pipe assembly, the soft pad is arranged on the first shell and is arranged along the circumference of the first shell close to the human body side, the first shell is provided with an air inlet and a plurality of exhaust holes, the air inlet pipe assembly is connected with the air inlet, the second shell is sleeved on the outer circumference of the first shell and is formed with two upper side arms and two lower side arms, wherein the extension length of the two upper side arms is set to be not less than the width of the human face.

[0006] As a further improvement, a limiting groove is recessed along the outer wall of the first shell, the second shell is embedded in the limiting groove, and the joint position of the first shell is smoothly transitioned.

[0007] As a further improvement, the inlet end of the air inlet is provided with a first positioning part, and the second shell is provided with a second positioning part corresponding to the first positioning part, and the first positioning part cooperates with the second positioning part to limit the second shell in the circumferential direction.

[0008] As a further improvement, the air inlet pipe assembly further comprises a connecting pipe provided with a limiting part and a first clamping part, and the first shell is provided with a second clamping part at the outlet end of the air inlet, and the first clamping part is clamped with the second clamping part to limit the limiting part and the second shell.

[0009] As a further improvement, the air inlet pipe assembly further comprises a clamping pipe provided with an openable and closable clamping jaw, and a boss is formed on the connecting pipe in the circumferential direction to connect with the clamping jaw.

[0010] As a further improvement, an elastic sheet is inserted into the connecting pipe to block the backflow of exhaled gas.

[0011] As a further improvement, the soft pad is made of silica gel and is provided with a fitting groove similar to the periphery of the first shell.

[0012] As a further improvement, the upper side arm and the lower side arm are both formed with a belt hole for the head belt to pass through.

[0013] As a further improvement, the upper side arm is in the shape of an outwardly expanding circular arc.

[0014] As a further improvement, the first shell and the second shell are both made of transparent material.

[0015] By adopting the above technical scheme, the following technical effects can be achieved:

[0016] The first shell is provided with an air outlet and an air inlet, and the second shell is formed with upper and lower side arms, so as to avoid the influence of the air outlet and the air inlet on the side arm structure, and to ensure the length of the side arm, especially the length of the upper side arm. The length of the two upper side arms is not less than the width of the human face, so that the upper side arm can provide sufficient support length when connected with the head belt, thereby avoiding the head belt from being attached to the human face, and preventing the patient's face from being scratched or injured. At the same time, the side arms are integrally formed with the second shell, which can reduce assembly and ensure the strength of the connection between the side arms and the shell, thereby avoiding the problem of side arm breakage or failure. In addition, the first shell is provided with a soft pad on the side close to the human body, which can ensure the attachment of the mask to the human face while protecting the face. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be considered as limiting the scope. Other related drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0018] Figures 1 to 3 is a structural schematic view of one of the embodiments of the present application under different viewing angles;

[0019] Figure 4 is a sectional view of one of the embodiments of the present application;

[0020] Figure 5 is a structural schematic view of the first shell of one of the embodiments of the present application;

[0021] Figure 6 is a structural schematic view of the second shell of one of the embodiments of the present application.

[0022] Icon:

[0023] 1-soft pad; 11-assembly groove;

[0024] 2-first shell; 21-air inlet; 22-air vent; 23-limiting groove; 24-first positioning part; 25-second clamping part;

[0025] 3-second shell; 31-upper arm; 311-hole; 32-lower arm; 33-second positioning part;

[0026] 4-air inlet pipe assembly; 41-connection pipe; 411-first clamping part; 412-limiting part; 413- boss; 42-clamping pipe; 421-clamping jaw; 43-elastic sheet. DETAILED DESCRIPTION

[0027] In order to make the purposes, technical schemes and advantages of the embodiments of the present application clearer, the technical schemes of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application. Embodiments

[0028] In combination Figures 1 to 6 The present embodiment provides a forehead support-free mask, which comprises a soft pad 1, a first shell 2, a second shell 3 and an air inlet pipe assembly 4. The soft pad 1 is arranged on the first shell 2 and is arranged along the periphery of the first shell 2 close to the human body. The first shell 2 is provided with an air inlet 21 and a plurality of air outlet holes 22. The air inlet pipe assembly 4 is connected with the air inlet 21. The second shell 3 is sleeved on the outer periphery of the first shell 2 and is formed with two upper arms 31 and two lower arms 32. The extension length of the two upper arms 31 is not less than the width of the human face.

[0029] For example, the width of the human face is generally 10-18 cm. Preferably, the extension length of the two upper arms 31 is 15 cm and is in the form of an outwardly expanding arc to avoid the human face and prevent the human face from being squeezed. The upper arms 31 and the lower arms 32 are both formed with a belt hole 311 for the head belt to pass through. In use, the head belt is passed through the belt hole 311 and is fixed with the human head.

[0030] It should be noted that in the present embodiment, by providing the exhaust hole 22 and the air inlet 21 on the first shell 2, and forming the upper and lower side arms on the second shell 3, the influence of the exhaust hole 22 and the air inlet 21 on the side arm structure is avoided, and the length of the side arms, especially the length of the upper side arms 31, is ensured. The length of the two upper side arms 31 is not less than the width of the human face, so that when the upper side arms 31 are connected with the headband, sufficient support length can be provided, thereby avoiding the headband from being attached to the human face, and preventing the patient's face from being injured or scratched. At the same time, the side arms are integrally formed with the second shell 3, which can reduce assembly, and can also ensure the strength of the connection between the side arms and the shell, thereby avoiding the problem of side arm breakage or failure. In addition, the soft pad 1 is arranged on the side of the first shell 2 close to the human body, which can ensure that the face shield is attached to the human face while protecting the face.

[0031] In a preferred embodiment, a limiting groove 23 is recessed along the outer wall of the first shell 2, and the second shell 3 is embedded in the limiting groove 23, and the joint position of the second shell 3 and the first shell 2 is smoothly transitioned. Preferably, the groove wall of the limiting groove 23 abuts against the outer edge of the second shell 3, and the outer wall of the second shell 3 is smoothly combined with the outer wall of the first shell 2, so that the appearance of the face shield is more simple and beautiful. At the same time, the two shells can be injection molded by different materials, so that the side arms can have better strength and toughness. In a preferred embodiment, the first shell 2 and the second shell 3 are both transparent materials, which is convenient for medical staff to observe the patient and the gas supply condition.

[0032] Further, the inlet end of the air inlet 21 is provided with a first positioning part 24, and the second shell 3 is provided with a second positioning part 33 corresponding to the first positioning part 24, and the first positioning part 24 cooperates with the second positioning part 33 to limit the second shell 3 in the circumferential direction. For example, the first positioning part 24 is recessed along the inlet end of the air inlet 21, and the second positioning part 33 is protruding, and the first positioning part 24 and the second positioning part 33 are recessed and protruding to engage each other, so that the second shell 3 is limited in the circumferential direction. In other embodiments, the first positioning part 24 is provided with two or a plurality of positioning parts in the circumferential direction, and the second positioning part 33 corresponds to the first positioning part 24 one by one, to further avoid the rotation of the second shell 3 relative to the first shell 2.

[0033] On the basis of the above embodiment, in an optional embodiment of the utility model, the air inlet pipe assembly 4 includes the connecting pipe 41, the connecting pipe 41 is equipped with the limiting portion 412 and the first clamping portion 411, the first shell 2 is provided with the second clamping portion 25 along the outlet end of the air inlet 21, the first clamping portion 411 is clamped with the second clamping portion 25, so that the limiting portion 412 is limited with the second shell 3. For example, the first clamping portion 411 is set as a reverse buckle, during installation, first, the second shell 3 is sleeved on the first shell 2 and is limited along the circumference, then the connecting pipe 41 is inserted along the air inlet 21, and the first clamping portion 411 is clamped with the second clamping portion 25, so that the limiting portion 412 is limited with the second shell 3, the fixation of the second shell 3 is realized, the installation process is simple, and it can meet mass production.

[0034] In other embodiments, the air inlet pipe assembly 4 further includes a clamping pipe 42, the clamping pipe 42 is provided with a clamping jaw 421 that can be opened and closed, and a boss 413 for connecting with the clamping jaw 421 is formed along the circumference of the connecting pipe 41. One end of the clamping pipe 42 is used to communicate with the connecting pipe 41, and the other end is used to connect with the gas conveying pipe. The clamping jaw 421 is arranged on the outer circumference of the clamping pipe 42, and the front end of the clamping jaw 421 is opened by pressing the rear end of the clamping jaw 421. After the clamping jaw 421 is released, the front end is reset under the elastic force. The elastic member can be a torsion spring. Not limited to this, not specifically limited. Medical staff can press the clamping jaw 421 to detach the clamping pipe 42 from the connecting pipe 41, which is convenient and fast.

[0035] In another embodiment, an elastic sheet 43 is inserted in the connecting pipe 41 to block the backflow of exhaled gas. The elastic sheet 43 can be opened in the gas inlet direction when gas enters. The pressure of the exhaled gas of the user is small, so the elastic sheet 43 can block the backflow of the exhaled gas into the connecting pipe 41, avoiding pipeline pollution. In other embodiments, a one-way valve can also be installed.

[0036] On the basis of the above embodiment, in an optional embodiment of the utility model, the material of the soft pad 1 is silica gel, and an assembly groove 11 similar to the circumference of the first shell 2 is arranged. During installation, the soft pad 1 is inserted into the first shell 2 along the assembly groove 11, or glue can be applied in the assembly groove 11 to fix the soft pad 1 and the first shell 2.

[0037] The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited to the above-mentioned embodiments. Any technical solution under the idea of the utility model belongs to the protection scope of the utility model.

Claims

1. A front free support face mask characterized in that, The application relates to a mask, which comprises a soft pad, a first shell, a second shell and an air inlet pipe assembly, the soft pad is arranged on the first shell and is arranged along the periphery of the first shell close to the human body, the first shell is provided with an air inlet and a plurality of air outlet holes, the air inlet pipe assembly is connected with the air inlet, the second shell is sleeved on the periphery of the first shell and is formed with two upper arms and two lower arms, wherein the extension length of the two upper arms is not less than the width of the human face.

2. The no-forehead supported face mask according to claim 1, wherein, A limiting groove is concavely arranged along the outer wall of the first shell, the second shell is embedded in the limiting groove and smoothly transitions with the joint position of the first shell.

3. The no-forehead supported face mask according to claim 2, wherein, The inlet end of the air inlet is provided with a first positioning part, the second shell is provided with a second positioning part corresponding to the first positioning part, the first positioning part cooperates with the second positioning part to limit the second shell in the circumferential direction.

4. The forehead unsupported face mask of claim 2 or 3, wherein, The air inlet pipe assembly comprises a connecting pipe, the connecting pipe is provided with a limiting part and a first clamping part, the first shell is provided with a second clamping part along the outlet end of the air inlet, the first clamping part is clamped with the second clamping part to limit the limiting part and the second shell.

5. The no-forehead supported face mask according to claim 4, wherein, The air inlet pipe assembly further comprises a clamping pipe, the clamping pipe is provided with an openable and closable clamping claw, a convex platform for connecting with the clamping claw is formed along the circumferential direction of the connecting pipe.

6. The no-forehead supported face mask according to claim 4, wherein, An elastic sheet is inserted into the connecting pipe to block the backflow of exhaled gas.

7. The no-forehead supported face mask according to claim 1, wherein, The material of the soft pad is silica gel and is provided with a fitting groove similar to the periphery of the first shell.

8. The no-forehead supported face mask of claim 1, wherein, The upper arms and the lower arms are both formed with a belt hole for the head belt to pass through.

9. The no-forehead supported face mask of claim 1, wherein, The upper arms are in the shape of outwardly expanding circular arcs.

10. The front free support visor of claim 1, wherein, The first shell and the second shell are both transparent materials.

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