CN115068765A

CN115068765A - Breathing mask and ventilation treatment equipment

Info

Publication number: CN115068765A
Application number: CN202210764453.6A
Authority: CN
Inventors: 马国辉; 周明钊; 庄志
Original assignee: BMC Tianjin Medical Co Ltd
Current assignee: BMC Tianjin Medical Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-09-20

Abstract

The embodiment of the invention discloses a breathing mask and ventilation treatment equipment, relating to the technical field of medical apparatus and instruments, wherein the breathing mask comprises: a gasket and a frame; the cushion includes opposing first and second sides, the first side having an airway cavity for receiving a patient's mouth and/or nose, and a frame disposed on the second side. The liner is provided with a pipeline interface communicated with the ventilation cavity, and the pipeline interface is used for communicating with an air supply pipeline; the cushion and/or the frame are provided with an exhaust structure through which the ventilation cavity communicates with the outside. By arranging the pipeline interface on the pad, the pipeline interface does not occupy the front space of the breathing mask because the pad is positioned on the side surface of the breathing mask. The air supply pipeline conveys air and oxygen into the mask through the pipeline interface, replaces the scheme of arranging the elbow pipe interface on the front frame of the breathing mask, liberates the front space of the breathing mask, is convenient for arrangement of an exhaust structure, and reduces the manufacturing difficulty and the manufacturing cost of the breathing mask.

Description

Breathing mask and ventilation treatment equipment

Technical Field

The invention relates to the technical field of medical equipment, in particular to a breathing mask and ventilation treatment equipment.

Background

Currently, noninvasive positive pressure ventilation is widely used in clinical treatment and hospital rescue, which does not require a tube to be inserted into the airway of a patient through surgery, but rather, the patient is treated by delivering a continuous or varying pressure ventilation to the airway of the patient using a pressure ventilation device and a breathing mask worn on the face of the patient.

In the prior art, an elbow structure is usually arranged on the front surface of a breathing mask, and the elbow structure is communicated with a pressure ventilation device through a ventilation pipeline to realize ventilation of the breathing mask. The gas exhaled by the patient is exhausted to the outside through an exhaust structure on the breathing mask.

The breathing mask with the elbow structure is inconvenient to arrange an exhaust structure on the breathing mask, so that the manufacturing difficulty and the manufacturing cost of the breathing mask are greatly increased.

Disclosure of Invention

The invention provides a breathing mask and ventilation treatment equipment, and aims to solve the problems that in the prior art, an exhaust structure is not convenient to arrange on the breathing mask due to the adoption of the breathing mask with a bent pipe structure, so that the manufacturing difficulty and the manufacturing cost of the breathing mask are greatly increased.

In a first aspect, the present invention discloses a respiratory mask, comprising: a gasket and a frame;

the cushion comprises opposing first and second sides, the first side having an airway cavity for receiving the mouth and/or nose of a patient, the frame being disposed on the second side;

the liner is provided with a pipeline interface communicated with the ventilation cavity, and the pipeline interface is used for communicating with an air supply pipeline;

the liner and/or the frame are/is provided with an exhaust structure, and the ventilation cavity is communicated with the outside through the exhaust structure.

Optionally, the frame is provided with an opening communicating with the vent lumen;

a valve body is arranged close to the opening and connected with the frame;

the valve body has a first position and a second position relative to the frame;

when the valve body is in the first position, the valve body is attached to the opening, and the opening is in a closed state;

when the valve body is in the second position, the valve body is separated from the opening, and the opening is in an open state.

Optionally, the valve body is arranged in the frame and is rotatably connected with the frame;

when the valve body rotates to the first position relative to the frame, the valve body is attached to the opening, and the opening is in a closed state;

when the valve body is rotated to the second position with respect to the frame, the valve body is separated from the opening, and the opening is in an open state.

Optionally, the frame is provided with a limiting member, and the limiting member is located on one side of the valve body close to the ventilation cavity;

when the valve body rotates towards one side of the ventilation cavity, the valve body is abutted to the limiting piece.

Optionally, the exhaust structure comprises a plurality of exhaust holes, and the plurality of exhaust holes are dispersedly arranged on the liner and/or the frame.

Optionally, the plurality of exhaust holes are arranged on the gasket, and the plurality of exhaust holes are dispersedly arranged on two sides of the pipeline interface.

Optionally, a plurality of the exhaust holes are dispersedly arranged on the valve body.

Optionally, the pipeline interface extends towards a direction away from the second side to form a connecting portion, and the connecting portion is used for communicating with an air supply pipeline.

Optionally, the pad is removably connected to the frame.

Optionally, the pipeline interface is arranged at an upper edge of the second side.

Optionally, the respiratory mask is forehead-free.

In a second aspect, the invention discloses a ventilation therapy device comprising a respiratory mask as described above.

In an embodiment of the present invention, a respiratory mask includes: a gasket and a frame; the cushion includes opposing first and second sides, the first side having an airway cavity for receiving a patient's mouth and/or nose, and a frame disposed on the second side. The liner is provided with a pipeline interface communicated with the ventilation cavity, and the pipeline interface is used for communicating with an air supply pipeline; the cushion and/or the frame are provided with an exhaust structure through which the ventilation cavity communicates with the outside. By arranging the pipeline interface on the pad, the pipeline interface does not occupy the front space of the breathing mask because the pad is positioned on the side surface of the breathing mask. The air supply pipeline conveys oxygen into the mask through the pipeline interface, replaces the scheme of arranging the elbow pipe interface on the front frame of the breathing mask, liberates the front space of the breathing mask, is convenient for arrangement of an exhaust structure, and reduces the manufacturing difficulty and the manufacturing cost of the breathing mask.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic diagram of a respiratory mask according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of the embodiment of the present invention shown in FIG. 1 along the direction a;

FIG. 3 illustrates a cross-sectional view taken along A-A of FIG. 2 in accordance with an embodiment of the present invention;

FIG. 4 is a second schematic view of a respiratory mask according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of the embodiment of the present invention shown in FIG. 4 along the direction b;

FIG. 6 is a schematic structural diagram of the embodiment of the present invention shown in FIG. 4 along the direction c;

FIG. 7 is a third schematic view of a respiratory mask according to an embodiment of the present invention;

FIG. 8 shows a schematic structural view along direction d in FIG. 7 according to an embodiment of the present invention;

FIG. 9 shows a schematic structural view along the direction e in FIG. 7 according to an embodiment of the present invention;

FIG. 10 is a fourth schematic view of a respiratory mask according to an embodiment of the present invention;

FIG. 11 shows a schematic structural view along direction f in FIG. 10 according to an embodiment of the present invention;

FIG. 12 is a fifth schematic view of a respiratory mask according to an embodiment of the present invention;

fig. 13 shows a schematic structural diagram along the g direction in fig. 12 according to the embodiment of the present invention.

Description of the reference numerals

10-a liner; 20-a frame; 30-pipe connection; 40-a venting structure; 50-a valve body; 60-a headband connection section; 70-a snap connection portion; 201-opening; 202-a stop; 301-a connecting portion; 401-vent.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, an embodiment of the present invention discloses a respiratory mask, including: a cushion 10 and a frame 20; the cushion 10 comprises opposite first and second sides, the first side having a vent cavity for receiving the mouth and/or nose of a patient, a frame 20 being provided on the second side; the liner 10 is provided with a pipeline interface 30 communicated with the ventilation cavity, and the pipeline interface 30 is used for communicating with an air supply pipeline; the cushion 10 and/or the frame 20 are provided with a venting structure 40, and the venting cavity is in communication with the outside through the venting structure 40.

Specifically, as shown in fig. 1-4, the respiratory mask includes a cushion 10 and a frame 20, the cushion 10 including opposing first and second sides, the first side of the cushion 10 being the side that is closer to the face of the patient and the second side of the cushion 10 being the side that is further from the face of the patient when the respiratory mask is worn by the patient. The frame 20 is disposed on a second side of the cushion 10. The rigidity of the frame 20 is greater than that of the pad 10, and the frame 20 can support and fix the pad 10, for example, the frame 20 may be made of polyvinyl chloride, thermoplastic polyurethane elastomer or silicone material. The cushion 10 is located on the side of the respirator and is typically made of a flexible material, such as silicone, for better fit against the patient's face. The connection mode of the frame 20 and the gasket 10 can be bonding, clamping and the like, and can also be manufactured in an integrated forming mode, so that the structural strength between the frame 20 and the gasket 10 can be ensured.

The first side of cushion 10 has a vent cavity that can receive the mouth and/or nose of a patient, which may be formed by cushion 10 alone or by both cushion 10 and frame 20. The respiratory mask also has headgear, typically made of fabric, foam, or the like, and headgear connection portions 60 and snap connection portions 70 for connecting the headgear and securing the cushion 10 and frame 20 to the patient's face via the headgear, the airway cavity forming a sealed cavity with the patient's face. When the mask is used, the snap connection part 70 and the head band can be quickly disassembled and assembled, the cushion 10 is attached to the face of a patient, and the position of the breathing mask on the face of the patient and the attaching tightness degree of the cushion 10 and the face of the patient can be adjusted by adjusting the tightness degree of the head band. Breathing masks, depending on the mode of use, can be generally divided into: a nasal mask, a mouth-nose mask, a nasal pillow mask or a full face mask, etc.

The cushion 10 is provided with a pipeline interface 30 communicated with the ventilation cavity, the pipeline interface 30 can be a standard interface or a customized interface, and the shape of the pipeline interface 30 can be cylindrical, rectangular, oval and the like. The pipe connection 30 may be reserved when the gasket 10 is molded, or may be separately opened after the gasket 10 is manufactured. The ventilation device is communicated with the pipeline interface 30 through an air supply pipeline, and gas is introduced into the ventilation cavity, so that positive pressure is generated in the ventilation cavity to treat the patient. The ventilation device can be positive pressure ventilation equipment such as an oxygen bottle, an oxygen generator, a breathing machine and the like. The air supply line and the line connection 30 may be connected by a snap fit, a threaded connection, an interference fit, or the like. Because the cushion 10 is positioned at the side of the breathing mask, the pipeline interface 30 is arranged on the cushion 10, and the front space of the breathing mask is not occupied.

The breathing mask is also provided with an exhaust structure 40, and the ventilation cavity is communicated with the outside through the exhaust structure 40. The exhaust gas exhaled by the patient can be exhausted to the outside through the exhaust structure 40, and the gas circulation inside the ventilation cavity is realized. Because the elbow pipe interface on the front of the breathing mask is cancelled, the front space of the breathing mask is liberated, the position of the exhaust structure 40 is more diversified, the exhaust structure 40 can be arranged on the cushion 10 or the frame 20 according to requirements, and the exhaust structure 40 can also be arranged on both the cushion 10 and the frame 20.

In an embodiment of the present invention, a respiratory mask comprises: a cushion 10 and a frame 20; the cushion 10 includes opposing first and second sides, the first side having a vent lumen for receiving the mouth and/or nose of a patient, and the frame 20 disposed on the second side. The liner 10 is provided with a pipeline interface 30 communicated with the ventilation cavity, and the pipeline interface 30 is used for communicating with an air supply pipeline; the cushion 10 and/or the frame 20 are provided with a venting structure 40, and the vent lumen communicates with the outside through the venting structure 40. By providing the line interface 30 on the cushion 10, the line interface 30 does not occupy the front space of the respirator because the cushion 10 is located on the side of the respirator. The air supply pipeline delivers oxygen into the mask through the pipeline interface 30, replaces the scheme of arranging an elbow pipe interface on the front frame 20 of the breathing mask, frees the front space of the breathing mask, is convenient for arranging the exhaust structure 40, and reduces the manufacturing difficulty and the manufacturing cost of the breathing mask.

Optionally, as shown with reference to fig. 1 to 3, the frame 20 is provided with an opening 201, the opening 201 being in communication with the venting cavity; a valve body 50 is arranged near the opening 201, and the valve body 50 is connected with the frame 20; the valve body 50 has a first position and a second position relative to the frame 20; when the valve body 50 is in the first position, the valve body 50 is attached to the opening 201, and the opening 201 is in a closed state; with the valve body 50 in the second position, the valve body 50 is separated from the opening 201, and the opening 201 is in an open state.

Specifically, as shown in fig. 1 to 3, the frame 20 is provided with an opening 201, the opening 201 is communicated with the ventilation cavity, and the size and the position of the opening 201 can be selected according to the size and the actual requirement of the frame 20. The opening 201 can be made in the frame 20 by using a hole-forming device, or the opening 201 can be reserved on the mold directly by using a mode of making the frame 20 by opening the mold, preferably by using a mode of making the opening the mold, so that the structural strength of the frame 20 can be ensured.

The valve body 50 is arranged at the opening 201, and the shape of the valve body 50 is matched with that of the opening 201. The valve body 50 is connected to the frame 20 in a rotating or sliding manner. The valve body 50 has a first position and a second position relative to the frame 20.

Under the condition that the valve body 50 is at the first position, the valve body 50 is attached to the opening 201, that is, the valve body 50 is attached to the frame 20 at the opening 201, so that the opening 201 is shielded, and the opening 201 is in a closed state, thereby achieving the purpose of sealing the vent cavity. The ventilation device passes through the gas supply line and the line connector 30, and gas is introduced into the ventilation cavity, so that positive pressure is generated in the ventilation cavity to treat the patient.

With the valve body 50 in the second position, the valve body 50 is separated from the opening 201, and the opening 201 is in an open state. The ventilation cavity is communicated with the outside through the opening 201, and the safety of a patient is guaranteed.

The valve body 50 is switched between the first position and the second position by rotating or sliding, and the driving force can be derived from the air pressure provided by the ventilation device or from the gravity of the valve body 50. A drive mechanism, such as a cylinder, motor, etc., may also be provided to actuate the valve body 50 between the first and second positions.

Alternatively, referring to fig. 1 to 3, the valve body 50 is disposed in the frame 20 and is rotatably connected to the frame 20; when the valve body 50 is rotated to the first position relative to the frame 20, the valve body 50 is attached to the opening 201, and the opening 201 is in a closed state; when the valve body 50 is rotated to the second position with respect to the frame 20, the valve body 50 is separated from the opening 201, and the opening 201 is in an open state.

Specifically, as shown in fig. 1 to 3, the valve body 50 is disposed in the frame 20, and the valve body 50 is rotatably connected to the frame 20. A hinge shaft may be provided at an upper end of the valve body 50 to be rotatably connected to the frame 20 through the hinge shaft. In the state where the breather is not venting into the breather chamber, the valve body 50 is in a naturally drooping state under the action of its own gravity, forming an angle with the plane of the opening 201, the angle being in the range of 0 ° to 60 °. At this time, the valve body 50 is in the second position, the valve body 50 is separated from the opening 201, and the opening 201 is in an open state. The ventilation cavity is communicated with the outside through the opening 201, and the safety of a patient is guaranteed.

Under the state that ventilation device ventilates to the cavity of ventilating inside, there is positive pressure in the cavity of ventilating inside, and valve body 50 rotates to the primary importance around the articulated shaft under the pressure effect to with the laminating of the frame 20 of opening 201 department, realize sheltering from opening 201, make opening 201 be in the closed condition, in order to reach the sealed purpose of the cavity of ventilating, guaranteed to produce the positive pressure in the cavity of ventilating and treated the patient.

Optionally, referring to fig. 1 to 3, the frame 20 is provided with a limiting member 202, and the limiting member 202 is located on one side of the valve body 50 close to the ventilation cavity; when the valve body 50 is rotated toward the vent chamber, the valve body 50 abuts against the stopper 202.

Specifically, as shown in fig. 1 to 3, when the patient wears the breathing mask in a lying state, the valve body 50 may rotate toward the ventilation cavity due to gravity and intrude into the ventilation cavity, which may cause discomfort to the patient. Therefore, a limiting member 202 is disposed on the frame 20, the limiting member 202 is located on one side of the valve body 50 close to the ventilation cavity, and the limiting member 202 may be a limiting rib, a limiting member, or the like.

When valve body 50 can rotate to ventilation cavity one side under the action of gravity, locating part 202 can prevent that valve body 50 from further invading inside the ventilation cavity, having promoted respiratory mask's travelling comfort with valve body 50 butt.

Alternatively, as shown in fig. 1 to 13, the air exhaust structure 40 includes a plurality of air exhaust holes 401, and the air exhaust holes 401 are dispersedly disposed on the gasket 10 and/or the frame 20.

Specifically, as shown in fig. 1 to 13, the exhaust structure 40 may be an exhaust valve or an exhaust hole 401. In the embodiment of the present invention, the air discharge structure 40 includes a plurality of air discharge holes 401, and the plurality of air discharge holes 401 are dispersedly disposed on the pad 10 and/or the frame 20. The positions of the exhaust holes 401 can be distributed on the basis of the principle that an attendant is not influenced, the exhaust holes 401 can share the exhaust gas exhaled by the patient, each exhaust hole 401 only exhausts weak airflow, the exhaust gas exhaled by the patient is prevented from flowing out from one position in a concentrated mode, and the influence on the attendant is avoided; and the noise is reduced, and the comfort level of the breathing mask is improved. The venting structure 40 may be disposed on the cushion 10 alone, or on the frame 20 alone, or the venting structure 40 may be disposed on both the cushion 10 and the frame 20, and may be selected according to the usage requirement and the size of the breathing mask.

When the exhaust holes 401 are provided on the frame 20, they may be provided under the frame 20 as shown in fig. 4 to 6, and arranged divergently outward, and also reduce the influence on the accompanying person.

The vents 401 may also be distributed in a centered position on the mask, as shown in fig. 7 and 12, where the vents 401 are positioned perpendicular to the patient's face to facilitate the venting of exhaust gases. Meanwhile, the vent holes 401 can be conical, so that the air flow is dispersed, and the influence on an attendant can be reduced.

Alternatively, referring to fig. 1 to 3 and 10 to 11, a plurality of the exhaust holes 401 are disposed in the gasket 10, and a plurality of the exhaust holes 401 are disposed at two sides of the pipe joint 30 in a distributed manner.

Specifically, as shown in fig. 1 to 3 and 10 to 11, the exhaust hole 401 is provided in the gasket 10. Since the air supply line needs to be connected to the line connection 30, the headband connection portion 60 and the like cannot be provided at this position due to the limitation of the air supply line, but the arrangement of the exhaust holes 401 is not affected. The plurality of exhaust holes 401 can be dispersedly arranged on the two sides of the pipeline interface 30, so that the reasonability of the space utilization of the breathing mask is improved. Simultaneously, the exhaust hole 401 that the dispersion set up also can prevent that the waste gas of patient's exhalation from concentrating by a position and flowing out, avoids producing the influence to accompanying and attending to personnel.

Alternatively, as shown in fig. 7 to 8 and 12 to 13, the plurality of exhaust holes 401 may be provided in the valve body 50 in a dispersed manner.

Specifically, as shown in fig. 7 to 8 and 12 to 13, the valve body 50 is provided with a vent hole 401, and the size and position of the vent hole 401 can be selected according to the size and actual requirements of the valve body 50. The vent 401 can be made on the valve body 50 by using a hole opening device, the vent 401 can be directly reserved on a die by using a mode of opening the die to make the frame 20, and the structural strength of the valve body 50 can be ensured by preferably using a mode of opening the die to make the frame.

The exhaust hole 401 is arranged on the valve body 50, and the exhaust hole 401 does not need to be additionally arranged on the frame 20 or the gasket 10, so that the forming difficulty of other parts is reduced in the process, the cost is reduced, and the production efficiency is improved.

Optionally, as shown in fig. 1 to 13, the pipeline interface 30 extends in a direction away from the second side to form a connection portion 301, and the connection portion 301 is used for communicating with an air supply pipeline.

Specifically, as shown in fig. 1 to 13, the ventilation device is communicated with the pipe joint 30 through the air supply pipe, so as to facilitate the assembly of the air supply pipe, the pipe joint 30 extends towards the direction away from the second side of the gasket 10 to form a connection portion 301, and the air supply pipe can be directly sleeved or embedded in the connection portion 301 to realize the installation and fixation. The connection mode of the air supply pipeline and the connection part 301 can be threaded connection, clamping connection, interference fit and the like. For example, the connection may be achieved by providing external threads on the outside of the connection portion 301 and internal threads on the inside wall of the air supply pipe.

When the breathing mask is worn by a patient, the extending direction of the connecting part 301 is close to the upper part of the face of the patient, the air supply pipeline can be arranged above the face of the patient, the chest of the patient is not pressed, the sleep of the patient is influenced, and the comfort of the breathing mask is improved.

Optionally, the cushion 10 is removably attached to the frame 20.

Specifically, the pad 10 is detachably connected to the frame 20, and the detachable connection may be a snap connection, a bolt connection, or the like. The detachable connection mode is adopted to facilitate the installation and replacement of the cushion 10 and the frame 20, and when the cushion 10 or the frame 20 is damaged due to failure, the cushion 10 or the frame 20 can be detached to independently repair or replace the cushion 10 or the frame 20. The corresponding cushion 10 or the corresponding frame 20 can be replaced according to the requirements of a treatment scene, so that the use flexibility of the breathing mask is improved.

In addition, as shown in fig. 10 to 12, the cushion 10 and the frame 20 may be formed as an integral structure, so that the breathing mask has better structural strength and simpler appearance.

Optionally, as shown in fig. 1 to 3, the pipe interface 30 is provided at the upper edge of the second side.

Specifically, as shown in fig. 1 to 3, the second side of the gasket 10 has an upper edge and a lower edge, which are located at both sides of the frame 10, respectively. The pipeline interface 30 is arranged at the upper edge of the cushion 10, and the pipeline interface 30 is arranged at the upper edge of the cushion 10 because the upper edge of the cushion 10 is positioned at the side surface of the breathing mask, so that the front space of the breathing mask is not occupied. Also, the upper edge of the cushion 10, near the forehead of the patient, where the tubing interface 30 and ventilation tubing are located, has less impact on the patient.

Optionally, the respiratory mask is forehead-free.

Specifically, conventional respiratory masks typically require a forehead support that encloses an approximately annular space with the respiratory mask and fits around the forehead of the patient to secure the mask to the patient's face. Forehead supports take up more mask space when assembled and are less comfortable to wear. In the embodiment of the application, a forehead supporting structure is eliminated, the mask can be fixed with the face of a patient only through the headband connecting part 60 and the buckle connecting part 70, the occupied space of the breathing mask is reduced, and the wearing comfort is improved.

The embodiment of the invention also discloses ventilation treatment equipment comprising the breathing mask.

In an embodiment of the present invention, the respiratory mask is adopted as a ventilation therapy device, and the respiratory mask includes: a cushion 10 and a frame 20; the cushion 10 includes opposing first and second sides, the first side having a vent lumen for receiving the mouth and/or nose of a patient, and the frame 20 disposed on the second side. The gasket 10 is provided with a pipeline interface 30 communicated with the ventilation cavity, and the pipeline interface 30 is used for communicating with an air supply pipeline; the cushion 10 and/or the frame 20 are provided with a venting structure 40, and the vent lumen communicates with the outside through the venting structure 40. By providing the conduit interface 30 on the cushion 10, the conduit interface 30 does not occupy the front space of the respiratory mask because the cushion 10 is located on the side of the respiratory mask. The air supply pipeline delivers oxygen into the mask through the pipeline interface 30, replaces the scheme of arranging an elbow pipe interface on the front frame 20 of the breathing mask, frees the front space of the breathing mask, is convenient for arranging the exhaust structure 40, and reduces the manufacturing difficulty and the manufacturing cost of the breathing mask.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A respiratory mask, comprising: a gasket and a frame;

2. A respiratory mask according to claim 1, wherein the frame is provided with an opening that communicates with the ventilation cavity;

a valve body is arranged close to the opening and connected with the frame;

3. A respiratory mask according to claim 2, wherein the valve body is disposed within the frame and is rotatably coupled to the frame;

4. The respirator as set forth in claim 3 wherein the frame is provided with a stop on a side of the valve body adjacent the vent chamber;

5. A respiratory mask according to claim 2, wherein the vent structure includes a plurality of vent holes distributed about the cushion and/or the frame.

6. The respirator as set forth in claim 5 wherein a plurality of the vent holes are disposed in the cushion and a plurality of the vent holes are disposed on opposite sides of the conduit interface.

7. A facial mask according to claim 5, wherein a plurality of said vent holes are provided in a distributed manner in said valve body.

8. The respiratory mask of claim 1, wherein the conduit interface extends away from the second side to form a connection for communicating with an air supply conduit.

9. The respiratory mask of claim 1, wherein the cushion is removably connected to the frame.

10. The respiratory mask of claim 1, wherein the conduit interface is disposed at an upper edge of the second side.

11. The respiratory mask of claim 1, wherein the respiratory mask is forehead support free.

12. A ventilation therapy device, comprising: the respiratory mask of any one of claims 1-11.