Anaesthetic mask

Abstract

The utility model provides an anaesthetic mask. The anaesthetic mask comprises a mask body, an air outlet pipe, a rotating disc and a plurality of alignment pieces. The front side of the mask body is provided with a protruding part, and a reserved hole is formed in the front side of the mask body. A through hole is further formed in the mask body, and a connector used for being connected with an anaesthesia machine is further connected to the mask body. The air outlet pipe is coaxially inserted into the reserved hole, and the front end of the air outlet pipe is detachably connected with a sealing piece. The rotating disc is arranged on the front side of the mask body and provided with a center hole allowing the protruding part to be inserted therein and further provided with a plurality of installation holes surrounding the center hole. The alignment pieces are inserted into the mounting holes in a one-to-one correspondence mode, and the insertion end faces of the alignment pieces are connected with dehumidification pieces. In the actual use process, any alignment piece can be inserted into the through hole by rotating the rotary disc so as to replace the dehumidification piece in the use state. According to the anaesthetic mask, it can be ensured that the humidity in the mask is stable, gathering and dripping of water drops are avoided, and the comfort degree of a wearer in the operation process is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of medical equipment, and specifically relates to an anesthesia mask. Background Art

[0002] The anesthesia mask is a medical device used in conjunction with the anesthesia machine. Specifically: the air inlet pipe of the anesthesia mask is connected to the exhaust pipe of the anesthesia machine through the air supply pipe; in actual use, the anesthesia machine discharges a certain flow and concentration of oxygen and anesthetic gas through the exhaust pipe, allowing the gas to enter the mask through the air supply pipe and the air inlet pipe in turn, and finally enter the patient's breathing circuit through the mouth and nose.

[0003] As the operation progresses, the heat generated by the patient's breathing will cause water droplets to form inside the mask and adsorb on the inner wall of the mask; if they are not treated, the water droplets will drip onto the patient's face or nasal cavity, causing discomfort to the patient. The anesthesia mask in the prior art absorbs the water droplets through a sponge sheet or solid dehumidifier pre-installed inside the mask body to prevent the water droplets from dripping.

[0004] The inventors found that due to the sealing properties of the anesthesia mask, the relevant materials used to absorb water droplets cannot be replaced in time; with the long-term use of the mask, an unexpected situation will occur in which the humidity inside the mask is high, and the water droplets gather into larger droplets and drip. Utility Model Content

[0005] An embodiment of the present application provides an anesthesia mask, which aims to timely replace relevant substances that can absorb water droplets, ensure the stability of the humidity inside the mask, avoid the gathering and dripping of water droplets, and improve the comfort of the wearer during the operation.

[0006] To achieve the above purpose, the technical solution adopted in this application is:

[0007] An anesthesia mask is provided, comprising:

[0008] The mask body is used to be worn on the patient's face; the thickness direction of the mask body is defined as the front-to-back direction, and the side facing the patient's face is the rear side; the front side of the mask body has a cylindrical protrusion, and the extended end surface of the protrusion is provided with a reserved hole that penetrates to the rear side of the mask body; the mask body also has a through hole that penetrates in the front-to-back direction; and the mask body is connected to a connector for connecting to an anesthesia machine;

[0009] An air outlet pipe is coaxially inserted into the reserved hole, with two ends of the air outlet pipe being located at the front and rear sides of the mask body respectively, and a sealing member is detachably connected to the front end of the air outlet pipe;

[0010] A rotating disk is arranged at the front side of the mask body and has a central hole suitable for inserting the protrusion; the rotating disk also has a plurality of mounting holes which are spaced around the central axis and penetrate in the front-to-back direction, and each of the mounting holes can be connected to the through hole; and

[0011] A plurality of alignment members are plugged into the plurality of mounting holes in a one-to-one correspondence, and a dehumidification member for absorbing water droplets is detachably connected to the rear end surface thereof;

[0012] When the mounting hole and the through hole are connected, the corresponding alignment member can be inserted into the through hole to limit the air inside the mask body from passing through the through hole, so that the dehumidification member can absorb the water droplets formed on the rear side of the mask body, and limit the rotation of the turntable relative to the mask body.

[0013] In a possible implementation, the insertion end of the alignment member has a first stop portion extending radially outward and made of an elastic material; the rear side surface of the turntable is provided with a plurality of first annular grooves corresponding one-to-one to the plurality of mounting holes; wherein each of the first annular grooves is coaxially connected to the corresponding mounting hole, and is used for the corresponding first stop portion to be embedded.

[0014] In a possible implementation, a second annular groove coaxially connected to the through hole is formed on the rear side surface of the mask body, and the second annular groove is used for the corresponding first stop portion to be embedded; and the positioning member has a second stop portion extending radially outward and made of elastic material; when the first stop portion is embedded in the second annular groove, the second stop portion is embedded in the first annular groove.

[0015] In a possible implementation, the sealing member adopts a cylindrical structure coaxially arranged with the air outlet pipe, and a membrane is connected to one end of the sealing member facing away from the air outlet pipe;

[0016] When the mask body is worn on the patient's face and the sealing member is connected to the air outlet pipe, the membrane body can be bulged toward the front side by supplying air to the joint through an anesthesia machine.

[0017] In a possible implementation, the rear end of the air outlet pipe adopts a flared structure with a diameter gradually increasing from the front to the rear, and a filter is fixedly connected inside the flared structure.

[0018] In a possible implementation, the rear side of the mask body has a gasket extending in the front-to-back direction for the patient to bite, and the gasket also includes:

[0019] A connecting plate is fixedly connected to the front end of the gasket and connected to the rear side of the mask body; a nut is fixedly connected to the front side of the connecting plate, and the axial direction of the nut is parallel to the front-rear direction;

[0020] The mask body is provided with a socket which penetrates along the front-to-back direction and is suitable for being coaxially connected with the nut, and a docking bolt which can be threadedly connected with the nut is inserted into the socket.

[0021] In one possible implementation, the outer edge of the mask body has a flange portion extending rearward; the joint is connected to the downward side of the flange portion, and the extended end surface of the flange portion has an annular air cushion for contacting the patient's face.

[0022] In a possible implementation, the mask body further includes:

[0023] Two drawstrings are respectively arranged on both sides of the flange portion in the left and right directions, and the front ends thereof are fixedly connected to the flange portion; and the rear ends of the two drawstrings are respectively connected to plugs and plug blocks suitable for mutual connection; and

[0024] The support arm is fixedly connected to the upward side of the flange portion and extends from bottom to top; the support arm has a strap that is slidably connected to it along the up and down directions, and the two ends of the strap are used to be connected to each other so that the strap is wrapped around the periphery of the patient's forehead.

[0025] In a possible implementation, the upper end of the support arm is connected to a connecting strap; the connecting strap is used to be placed on the top of the patient's head, and its end is used to connect with the connection between the two drawstrings, and the connecting strap has a strip cavity that passes through in the left and right directions for inserting the strap.

[0026] In one possible implementation, the support arm has a guide cavity that penetrates in the left-right direction and extends in the up-down direction, and the strap is inserted into the guide cavity; the front side of the support arm has a plurality of center holes distributed in the up-down direction and connected to the guide cavity, and also has a magnetic rod for inserting into any one of the center holes, suitable for abutting the strap and being attracted to the inner wall of the guide cavity.

[0027] In an embodiment of the present application, by wearing the mask body on the patient's face, the gas output by the anesthesia machine can be discharged to the inner side of the mask body to achieve the technical purpose of anesthetizing the patient; on this basis, by removing the sealing component, the gas inside the mask body can be discharged; at the same time, the dehumidification component can be used to absorb the moisture and water droplets on the inner side of the mask body.

[0028] When the dehumidification component reaches a certain absorption amount, its absorption efficiency and effect will decrease. At this time, the alignment component can be pulled forward so that the rear end face of the alignment component and the rear side face of the turntable are coplanar; then, the turntable is rotated to align another alignment component with the through hole; finally, the alignment component is pushed backward to insert the corresponding dehumidification component into the through hole to absorb moisture and water droplets on the inner side of the mask body.

[0029] Compared with the prior art, the anesthesia mask provided in this embodiment can achieve timely replacement of the dehumidification component while avoiding air leakage of the mask body, so as to ensure stable humidity inside the mask, avoid the gathering and dripping of water droplets, and improve the comfort of the wearer during surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is one of the three-dimensional structural schematic diagrams of the anesthesia mask provided in the embodiment of the present application;

[0031] Figure 2 for Figure 1 A partial enlarged schematic diagram of the middle circle A;

[0032] Figure 3 The second schematic diagram of the three-dimensional structure of the anesthesia mask provided in the embodiment of the present application;

[0033] Figure 4 for Figure 3 A partial enlarged schematic diagram of the middle circle B;

[0034] Figure 5 It is a partial enlarged schematic diagram of the mask body and the alignment member used in the embodiment of the present application under the explosion perspective;

[0035] Figure 6 A schematic diagram of the exploded structure of the alignment member used in the embodiment of the present application;

[0036] Figure 7 This is a schematic diagram of an explosion of the air outlet pipe used in the embodiment of the present application in a cross-sectional perspective;

[0037] Figure 8 A schematic diagram of the three-dimensional structure of the gasket used in the embodiment of the present application;

[0038] Fig. 9 A schematic cross-sectional view of the turntable used in the embodiment of the present application;

[0039] Fig.10 A schematic diagram of the three-dimensional structure of a turntable used in an embodiment of the present application;

[0040] Fig.11 It is a partial enlarged schematic diagram of the support arm and the strap used in the embodiment of the present application under the explosion perspective;

[0041] Fig.12 This is one of the three-dimensional structural schematic diagrams of the mask body used in the embodiment of the present application;

[0042] Fig.13 This is the second schematic diagram of the three-dimensional structure of the mask body used in the embodiment of the present application;

[0043] Explanation of the accompanying drawings: 1. Mask body; 11. Raised portion; 12. Reserved hole; 13. Through hole; 14. Joint; 15. Second annular groove; 16. Docking bolt; 17. Flanged portion; 18. Air cushion; 19. Plug hole; 2. Exhaust pipe; 21. Closing piece; 211. Membrane body; 22. Filter screen; 3. Turntable; 31. Center hole; 32. Mounting hole; 33. First annular groove; 4. Alignment piece; 41. First stop portion; 42. Second stop portion; 43. Dehumidification piece; 5. Gasket; 51. Connecting plate; 511. Nut; 6. Pull strap; 61. Plug; 62. Insert block; 7. Support arm; 71. Guide cavity; 72. Positioning hole; 73. Magnetic rod; 8. Strap; 9. Connecting strap; 91. Strip cavity. DETAILED DESCRIPTION

[0044] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0045] Please also read Figures 1 to 13 The anesthesia mask provided by the present application is now described. The anesthesia mask provided by the present application comprises a mask body 1, an air outlet pipe 2, a rotating disk 3 and a plurality of alignment members 4.

[0046] The mask body 1 is used to be worn on the patient's face; in this embodiment, the thickness direction of the mask body 1 is defined as the front-to-back direction, and when the mask body 1 is worn, the side of the mask body 1 facing the patient's face is the rear side.

[0047] The front side of the mask body 1 has a cylindrical protrusion 11, and a reserved hole 12 is opened on the extended end surface of the protrusion 11 and penetrates to the rear side of the mask body 1; and the mask body 1 also has a through hole 13 that penetrates along the front-to-back direction and is arranged parallel to the reserved hole 12.

[0048] In this embodiment, the mask body 1 is connected with a connector 14 communicating with the inner space thereof, and the connector 14 is used to be connected to an anesthesia machine.

[0049] The air outlet pipe 2 is coaxially inserted into the reserved hole 12, and a sealing structure is provided between its outer peripheral wall and the inner peripheral wall of the reserved hole 12; moreover, the two ends of the air outlet pipe 2 are respectively located at the front and rear sides of the mask body 1, and the front end thereof is detachably connected with a closure member 21.

[0050] In actual use, the outlet of the air outlet pipe 2 can be closed by connecting the closing member 21 to the air outlet pipe 2; and the air outlet pipe 2 can be opened by separating the closing member 21 from the air outlet pipe 2.

[0051] The rotating disk 3 is arranged at the front side of the mask body 1, and has a central hole 31 suitable for inserting the protrusion 11; that is, the rotating disk 3 is rotatably connected to the mask body 1 through the plug-in relationship between the central hole 31 and the protrusion 11. In addition, the rotating disk 3 also has a plurality of mounting holes 32 that are equidistantly spaced around the axis of the central hole 31 and penetrate in the front-to-back direction, and as the rotating disk 3 rotates, each mounting hole 32 can be connected to the through hole 13.

[0052] In this embodiment, there are two through holes 13, which are arranged around the central axis of the reserved hole 12; and the number of the mounting holes 32 is at least twice the number of the through holes 13. When the turntable 3 rotates, any one of the mounting holes 32 can be connected to any one of the through holes 13; and when the mounting hole 32 is connected to the through hole 13, the other mounting hole 32 is connected to the other through hole 13.

[0053] The plurality of alignment members 4 are inserted into the plurality of mounting holes 32 in a one-to-one correspondence, and the rear end surface thereof is detachably connected with a dehumidifying member 43 for absorbing water droplets; in actual use, the alignment member 4 can be withdrawn from the mounting hole 32 by manually pulling the alignment member 4 forward.

[0054] When the mounting hole 32 is connected to the through hole 13, the corresponding alignment member 4 can be inserted into the through hole 13 by pushing the alignment member 4 forward, so as to achieve the following technical purposes:

[0055] First, it limits the air inside the mask body 1 from passing through the through hole 13;

[0056] Secondly, the dehumidifying element 43 can absorb the water droplets formed on the rear side of the mask body 1;

[0057] Third, the rotation of the turntable 3 relative to the mask body 1 is limited.

[0058] In the embodiment of the present application, by wearing the mask body 1 on the patient's face, the gas output by the anesthesia machine can be discharged to the inside of the mask body 1 to achieve the technical purpose of anesthetizing the patient; on this basis, by removing the sealing member 21, the gas inside the mask body 1 can be discharged; at the same time, the dehumidification member 43 can be used to absorb the moisture and water droplets on the inside of the mask body 1.

[0059] When the dehumidifying component 43 reaches a certain absorption amount, its absorption efficiency and effect will be reduced. At this time, the alignment component 4 can be pulled out forward so that the rear end face of the alignment component 4 and the rear side face of the turntable 3 are coplanar; then, the turntable 3 is rotated to align another alignment component 4 with the through hole 13; finally, the alignment component 4 is pushed backward to insert the corresponding dehumidifying component 43 into the through hole 13 to absorb the moisture and water droplets on the inner side of the mask body 1.

[0060] Compared with the prior art, the anesthesia mask provided in this embodiment can achieve timely replacement of the dehumidification component 43 on the basis of avoiding air leakage of the mask body 1, so as to ensure the stability of the humidity inside the mask, avoid the gathering and dripping of water droplets, and improve the comfort of the wearer during the operation.

[0061] In some embodiments, Figure 5 , Fig.10 and Fig.12 As shown, the insertion end of the alignment member 4 has a first stop portion 41 extending radially outward and made of elastic material; the rear side surface of the turntable 3 is provided with a plurality of first annular grooves 33 corresponding one-to-one to the plurality of mounting holes 32, and each first annular groove 33 is coaxially connected to the corresponding mounting hole 32.

[0062] In actual use, when the insertion end face of the alignment member 4 and the rear side face of the turntable 3 are coplanar, the first stop portion 41 is inserted into the first annular groove 33 to prevent the alignment member 4 from withdrawing from the mounting hole 32; and when the alignment member 4 needs to be withdrawn from the mounting hole 32, it is necessary to manually provide a force for the alignment member 4 to move forward so that the first stop portion 41 undergoes elastic deformation.

[0063] It should be supplemented that when the alignment member 4 is inserted into the through hole 13 , the first stopper 41 is elastically deformed and contacts the inner wall of the through hole 13 , thereby enhancing the sealing between the outer peripheral wall of the alignment member 4 and the inner peripheral wall of the through hole 13 .

[0064] In some embodiments, Figure 5 , Fig.10 and Fig.12 As shown, a second annular groove 15 coaxially connected to the through hole 13 is provided on the rear side surface of the mask body 1, and this second annular groove 15 is used for the corresponding first stop portion 41 to be embedded; it should be noted that when the first stop portion 41 is embedded in the second annular groove 15 and abuts against the inner wall of the second annular groove 15, the first stop portion 41 is still in an elastic deformation state.

[0065] In this embodiment, the alignment member 4 also has a second stop portion 42 extending radially outward and made of elastic material; when the first stop portion 41 is embedded in the second annular groove 15, the second stop portion 42 is simultaneously embedded in the first annular groove 33 to limit the movement of the alignment member 4 relative to the turntable 3 in the front-to-back direction.

[0066] In some embodiments, Figure 5 and Figure 7 As shown, the closure member 21 adopts a cylindrical structure coaxially arranged with the outlet pipe 2; in this embodiment, the inner circumferential wall of the closure member 21 is provided with an internal thread structure, and the outer circumferential wall of the outlet pipe 2 is provided with an external thread structure matching the internal thread structure; in actual use, the threaded connection between the closure member 21 and the outlet pipe 2 can be achieved by placing the closure member 21 on the outlet pipe 2 and rotating it.

[0067] In this embodiment, a membrane body 211 is connected to the end of the closure member 21 facing away from the air outlet pipe 2; when the mask body 1 is worn on the patient's face and the closure member 21 is connected to the air outlet pipe 2, air is supplied to the connector 14 through the anesthesia machine, so that the membrane body 211 can bulge toward the front side; by manually observing the bulging size of the membrane body 211, it can be judged whether there is a leak on the rear side of the mask body 1.

[0068] In some embodiments, Figure 7 As shown, the rear end of the air outlet pipe 2 adopts a flared structure with a diameter gradually increasing from the front to the rear, and a filter screen 22 is fixedly connected inside the flared structure.

[0069] In some embodiments, Figure 3 , Figure 8 and Fig.13 As shown, the rear side of the mask body 1 has a gasket 5 extending in the front-to-back direction for the patient to bite, and the gasket 5 also includes a connecting plate 51.

[0070] The connecting plate 51 is fixedly connected to the front end of the gasket 5 and is connected to the rear side of the mask body 1; a nut 511 is fixedly connected to the front side of the connecting plate 51, and the axial direction of the nut 511 is parallel to the front-to-back direction.

[0071] The mask body 1 has a socket 19 that penetrates along the front-to-back direction and is suitable for being coaxially connected to the nut 511 , and a docking bolt 16 that can be threadedly connected to the nut 511 is inserted into the socket 19 .

[0072] In some embodiments, Figure 1 and Figure 3 As shown, the outer edge of the mask body 1 has a flange portion 17 extending toward the rear side, and the function of this flange portion 17 is to ensure the entry of the patient's face; the aforementioned joint 14 is connected to the side of the flange portion 17 facing downward, and the extended end face of this flange portion 17 has an annular air cushion 18 for contacting the patient's face.

[0073] In some embodiments, Figures 1 to 3 As shown, the mask body 1 also includes two drawstrings 6 and supporting arms 7.

[0074] The two drawstrings 6 are respectively arranged on both sides of the flange portion 17 in the left and right directions, and their front ends are fixedly connected to the flange portion 17; and the rear ends of the two drawstrings 6 are respectively connected with a plug 61 and an insert block 62 suitable for mutual connection.

[0075] The support arm 7 is fixedly connected to the upward side of the flange portion 17 and extends from bottom to top; the support arm 7 has a strap 8 that is slidably connected to it along the up and down directions, and the two ends of the strap 8 are used to be connected to each other so that the strap 8 is wrapped around the periphery of the patient's forehead.

[0076] In some embodiments, Figure 3 and Figure 4 As shown, the upper end of the support arm 7 is connected with a connecting strap 9; the connecting strap 9 is used to be placed on the top of the patient's head, and its end is used to connect with the connection between the two drawstrings 6, and the connecting strap 9 has a strip cavity 91 that is used for inserting the strap 8 and passes through in the left and right directions.

[0077] In some embodiments, Fig.11 As shown, the support arm 7 has a guide cavity 71 which penetrates in the left-right direction and extends in the up-down direction, and the strap 8 is inserted in the guide cavity 71; the front side surface of the support arm 7 has a plurality of positioning holes 72 which are distributed in the up-down direction and connected to the guide cavity 71, and it also has a magnetic rod 73 which is used to be inserted into any one of the positioning holes 72, suitable for abutting the strap 8 and being attracted to the inner wall of the guide cavity 71.

[0078] The above content is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An anesthesia mask, characterized in that, include: The mask body is used to be worn on the patient's face; the thickness direction of the mask body is defined as the front-to-back direction, and the side facing the patient's face is the rear side; the front side of the mask body has a cylindrical protrusion, and the extended end surface of the protrusion is provided with a reserved hole that penetrates to the rear side of the mask body; the mask body also has a through hole that penetrates in the front-to-back direction; and the mask body is connected to a connector for connecting to an anesthesia machine; An air outlet pipe is coaxially inserted into the reserved hole, with two ends of the air outlet pipe being located at the front and rear sides of the mask body respectively, and a sealing member is detachably connected to the front end of the air outlet pipe; A rotating disk is arranged at the front side of the mask body and has a central hole suitable for inserting the protrusion; the rotating disk also has a plurality of mounting holes which are spaced around the central axis and penetrate in the front-to-back direction, and each of the mounting holes can be connected to the through hole; and A plurality of alignment members are plugged into the plurality of mounting holes in a one-to-one correspondence, and a dehumidification member for absorbing water droplets is detachably connected to the rear end surface thereof; When the mounting hole and the through hole are connected, the corresponding alignment member can be inserted into the through hole to limit the air inside the mask body from passing through the through hole, so that the dehumidification member can absorb the water droplets formed on the rear side of the mask body, and limit the rotation of the turntable relative to the mask body.

2. The anesthesia mask according to claim 1, characterized in that The insertion end of the alignment member has a first stop portion extending radially outward and made of elastic material; the rear side surface of the turntable is provided with a plurality of first annular grooves corresponding one by one to the plurality of mounting holes; wherein each of the first annular grooves is coaxially connected to the corresponding mounting hole, and is used for the corresponding first stop portion to be embedded.

3. The anesthesia mask according to claim 2, characterized in that: A second annular groove coaxially connected to the through hole is formed on the rear side of the mask body, and the second annular groove is used for the corresponding first stop portion to be embedded; and the positioning member has a second stop portion extending radially outward and made of elastic material; when the first stop portion is embedded in the second annular groove, the second stop portion is embedded in the first annular groove.

4. The anesthesia mask according to claim 1, characterized in that: The sealing member adopts a cylindrical structure coaxially arranged with the air outlet pipe, and a membrane is connected to one end of the sealing member facing away from the air outlet pipe; When the mask body is worn on the patient's face and the sealing member is connected to the air outlet pipe, the membrane body can be bulged toward the front side by supplying air to the joint through an anesthesia machine.

5. The anesthesia mask according to claim 1, characterized in that: The rear end of the air outlet pipe adopts a flaring structure with a diameter gradually increasing from the front to the rear, and a filter screen is fixedly connected inside the flaring structure.

6. The anesthesia mask according to claim 1, characterized in that: The rear side of the mask body has a gasket extending in the front-to-back direction for the patient to bite, and the gasket also includes: A connecting plate is fixedly connected to the front end of the gasket and connected to the rear side of the mask body; a nut is fixedly connected to the front side of the connecting plate, and the axial direction of the nut is parallel to the front-rear direction; The mask body is provided with a socket which penetrates along the front-to-back direction and is suitable for being coaxially connected with the nut, and a docking bolt which can be threadedly connected with the nut is inserted into the socket.

7. The anesthesia mask according to claim 1, characterized in that: The outer edge of the mask body has a flange portion extending toward the rear; the joint is connected to the side of the flange portion facing downward, and the extended end surface of the flange portion has a ring-shaped air cushion for contacting the patient's face.

8. The anesthesia mask according to claim 7, characterized in that The mask body also includes: Two drawstrings are respectively arranged on both sides of the flange portion in the left and right directions, and the front ends thereof are fixedly connected to the flange portion; and the rear ends of the two drawstrings are respectively connected to plugs and plug blocks suitable for mutual connection; and The support arm is fixedly connected to the upward side of the flange portion and extends from bottom to top; the support arm has a strap that is slidably connected to it along the up and down directions, and the two ends of the strap are used to be connected to each other so that the strap is wrapped around the periphery of the patient's forehead.

9. The anesthesia mask according to claim 8, characterized in that The upper end of the support arm is connected with a connecting strap; the connecting strap is used to be placed on the top of the patient's head, and its end is used to connect with the connection between the two drawstrings, and the connecting strap has a strip cavity that passes through in the left and right directions for the strap to be inserted.

10. The anesthesia mask according to claim 8, characterized in that The support arm has a guide cavity that penetrates in the left-right direction and extends in the up-down direction, and the strap is inserted in the guide cavity; the front side of the support arm has a plurality of positioning holes distributed in the up-down direction and connected to the guide cavity, and also has a magnetic rod for being inserted into any one of the positioning holes, suitable for abutting the strap and being attracted to the inner wall of the guide cavity.

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