Closed anesthesia nasal mask

Abstract

The invention relates to the technical field of medical instruments, in particular to a closed anesthesia nasal mask. According to the technical scheme, the device comprises an anesthesia nose mask and further comprises an attaching unit, the attaching unit comprises flexible sealing gaskets, the flexible sealing gaskets are symmetrically connected to the anesthesia nose mask in a sliding mode, a medicine control unit is arranged above the anesthesia nose mask and comprises a medicine control pipe, the anesthesia nose mask is communicated with the medicine control pipe, and the medicine control pipe is connected with the attaching unit in a sliding mode. A mounting ring is connected to one side of the pesticide control pipe, and a rotating frame is rotationally connected into the mounting ring. Through the design of the flexible sealing gasket, sealing between the anesthesia nasal mask and the skin around the nose of a patient can be achieved, and therefore the situation that when the patient inhales, external air enters the anesthesia nasal mask, and the anesthetic absorbing efficiency of the patient is reduced is effectively prevented; the throughput of the anesthetic can be accurately adjusted according to the breathing speed of the patient, so that the patient is assisted to quickly stabilize the emotion.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a closed anesthesia nasal mask. Background Art

[0002] The anesthesia nasal mask is an essential medical device for general anesthesia. The anesthesia nasal mask is connected to the anesthesia machine to provide the patient with an effective non-invasive breathing circuit. When the patient needs to be given inhalation anesthesia, the anesthesia nasal mask needs to cover the patient's nose to inhale high-concentration oxygen and anesthetic drugs into the body through the patient's breathing.

[0003] The anesthesia nasal mask in the prior art cannot completely fit the skin around the patient's nose when in use. When the patient inhales, external air will enter the anesthesia nasal mask, resulting in the patient being unable to efficiently absorb anesthetic drugs. After the patient wears the anesthesia nasal mask for a long time, it will cause pressure marks on the skin around the patient's nose. Before the operation, the patient is in a nervous mood and the patient's breathing rate is relatively rapid. Medical staff usually comfort the patient, but some patients cannot calm down quickly just through medical comfort, resulting in the operation cannot be carried out quickly and efficiently. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a closed anesthesia nasal mask.

[0005] The technical implementation scheme of the present invention is: a closed anesthesia nasal mask, including the anesthesia nasal mask, and also including a fitting unit, the fitting unit including a flexible sealing pad, the flexible sealing pad is symmetrically and slidably connected to the anesthesia nasal mask, a drug control unit is arranged above the anesthesia nasal mask, the drug control unit includes a drug control tube, the anesthesia nasal mask is connected to the drug control tube, one side of the drug control tube is connected to a mounting ring, a rotating frame is rotatably connected in the mounting ring, a plurality of evenly distributed flow control plates are slidably connected in the rotating frame, and a first elastic member is arranged between the plurality of flow control plates and the rotating frame.

[0006] Furthermore, the fitting unit also includes a pneumatic telescopic rod, and the pneumatic telescopic rod is symmetrically slidably connected to the anesthesia nasal mask, and the telescopic end of the pneumatic telescopic rod is fixedly connected to the top surface of the flexible sealing pad.

[0007] Furthermore, the drug control unit further includes a first valve plate, and the bottom of the drug control tube is hinged with the first valve plate.

[0008] Furthermore, the drug control unit also includes fan blades, and the fan blades are fixedly connected in the rotating frame.

[0009] Furthermore, the drug control unit also includes a limit block, and a plurality of evenly distributed limit blocks are hinged on the rotating frame, and the plurality of limit blocks are used in conjunction with a plurality of flow control plates.

[0010] Furthermore, a U-shaped block is included, a guide groove is symmetrically opened on one side of the drug control tube, the U-shaped block is fixed in the guide groove, and a clamping block is symmetrically installed on one side of the mounting ring, and the clamping block is used in conjunction with the guide groove and the U-shaped block respectively.

[0011] Furthermore, a wiping strip is also included, and the inner wall of the anesthesia nasal mask is slidably connected to the wiping strip. A second elastic member is arranged between the wiping strip and the inner wall of the anesthesia nasal mask, and the first valve plate is connected to the wiping strip by a pull rope.

[0012] Furthermore, an exhaust pipe is also included. One side of the anesthesia nasal mask is symmetrically connected to the exhaust pipe, and a second valve plate is hinged in the exhaust pipe.

[0013] Furthermore, it also includes an elastic telescopic rod, which is symmetrically installed on the anesthesia nasal mask, the exhaust pipe and the elastic telescopic rod are connected through a hose, and the telescopic end of the elastic telescopic rod is fixedly connected to the outer wall of the pneumatic telescopic rod.

[0014] Furthermore, an exhaust hole is provided on the outer wall of the elastic telescopic rod.

[0015] Furthermore, the flow control plate and the fan blades are both made of medical-grade silicone.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention can achieve sealing between the anesthesia nasal mask and the skin around the patient's nose through the design of a flexible sealing pad, thereby effectively preventing external air from entering the anesthesia nasal mask when the patient inhales, resulting in reduced efficiency in the patient's absorption of anesthetic drugs. Through the design of the flow control plate, the amount of anesthetic drugs passing through can be accurately adjusted according to the patient's breathing speed, thereby helping the patient to quickly stabilize his emotions.

[0017] 2. The present invention can effectively prevent the patient from inhaling external gas when inhaling, and prevent gas from entering the drug control tube when the patient exhales, thereby reducing the anesthetic effect, through the design of the elastic telescopic rod, the flexible sealing pad can float up and down with the patient's breathing, thereby reducing the pressure of the flexible sealing pad on the patient's skin, preventing the flexible sealing pad from squeezing the skin around the patient's nose for a long time, causing indentations on the skin around the patient's nose, and effectively improving the comfort of the patient wearing the anesthesia nasal mask. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the mechanism of the laminating unit of the present invention; Figure 3 This is a schematic diagram of the installation of the drug control station of the present invention; Figure 4 It is a schematic diagram of the installation of the rotating frame of the present invention; Figure 5 This is a schematic diagram of the installation of the card block of the present invention; Figure 6 It is a schematic diagram of the installation of the wiping strip of the present invention; Figure 7 This is a schematic diagram of the installation of the elastic telescopic rod of the present invention; Figure 8 This is a schematic diagram of the installation of the second valve plate of the present invention; Fig. 9 The figure is a schematic diagram of the installation of the pneumatic telescopic rod of the present invention.

[0019] The meaning of the reference numerals in the figure are: 1: anesthesia nasal mask, 2: flexible sealing pad, 3: mounting ring, 4: flow control plate, 5: pneumatic telescopic rod, 6: drug control tube, 7: first valve plate, 8: rotating frame, 9: fan blade, 10: limit block, 11: U-shaped block, 12: card block, 13: wiping strip, 14: exhaust pipe, 15: second valve plate, 16: elastic telescopic rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Closed anesthesia nasal mask, such as Figure 1-Figure 3 As shown, it includes an anesthesia nasal mask 1 and a fitting unit, the fitting unit includes a flexible sealing pad 2, the flexible sealing pad 2 is symmetrically and slidably connected to the anesthesia nasal mask 1, a drug control unit is arranged above the anesthesia nasal mask 1, the drug control unit includes a drug control tube 6, the anesthesia nasal mask 1 is connected to the drug control tube 6, one side of the drug control tube 6 is connected to a mounting ring 3, a rotating frame 8 is rotatably connected in the mounting ring 3, three uniformly distributed flow control plates 4 are slidably connected in the rotating frame 8, the three flow control plates 4 can limit the airflow velocity of the anesthetic drug, and a first elastic member is arranged between the three flow control plates 4 and the rotating frame 8, and the first elastic member is a tension spring.

[0022] like Figure 2 As shown, the fitting unit also includes a pneumatic telescopic rod 5, which is symmetrically slidably connected to the anesthesia nasal mask 1, the telescopic end of the pneumatic telescopic rod 5 is fixedly connected to the top surface of the flexible sealing pad 2, and the top of the outer wall of the pneumatic telescopic rod 5 is connected to an air inlet nozzle. The extension of the telescopic end of the pneumatic telescopic rod 5 can drive the flexible sealing pad 2 to fit the skin around the patient's nose.

[0023] like Figure 3 As shown, the drug control unit also includes a first valve plate 7, and the bottom of the drug control tube 6 is hinged with the first valve plate 7. The first valve plate 7 is used to isolate the anesthesia nasal mask 1 from the drug control tube 6 to prevent gas from entering the drug control tube 6 when the patient exhales.

[0024] like Figure 3-Figure 4 As shown, the drug control unit also includes a fan blade 9, and the fan blade 9 is fixedly connected to the rotating frame 8, and the fan blade 9 can rotate when the patient inhales.

[0025] like Figure 4 As shown, the drug control unit also includes a limit block 10. Three evenly distributed limit blocks 10 are hinged on the rotating frame 8. The three limit blocks 10 are arranged in a one-to-one correspondence with the three flow control plates 4. The three limit blocks 10 are used in conjunction with the three flow control plates 4. The limit blocks 10 are used to prevent the flow control plates 4 from resetting quickly.

[0026] like Figure 5 As shown, a U-shaped block 11 is also included, a guide groove is symmetrically opened on one side of the drug control tube 6, and the U-shaped block 11 is fixed in the guide groove. A clamping block 12 is symmetrically installed on one side of the mounting ring 3, and the clamping block 12 is used in conjunction with the guide groove and the U-shaped block 11 respectively. Through the cooperation between the clamping block 12 and the U-shaped block 11, the mounting ring 3 can be easily disassembled.

[0027] like Figure 6 As shown, a wiping strip 13 is also included. The inner wall of the anesthesia nasal mask 1 is slidably connected with the wiping strip 13. The top surface of the wiping strip 13 is a medical sponge. A second elastic member is arranged between the wiping strip 13 and the inner wall of the anesthesia nasal mask 1. The second elastic member is a tension spring. The first valve plate 7 is connected to the wiping strip 13 through a pull rope. When the first valve plate 7 rotates, the wiping strip 13 can be driven to move through the pull rope.

[0028] like Figure 6-Figure 8 As shown, an exhaust pipe 14 is also included. One side of the anesthesia nasal mask 1 is symmetrically connected to the exhaust pipe 14. A second valve plate 15 is hinged in the exhaust pipe 14. The second valve plate 15 is used to isolate the anesthesia nasal mask 1 from the exhaust pipe 14 to prevent external gas from entering the anesthesia nasal mask 1 through the exhaust pipe 14 when the patient inhales.

[0029] like Figure 7-Figure 8 As shown, it also includes an elastic telescopic rod 16, which is symmetrically installed on the anesthesia nasal mask 1. The exhaust pipe 14 is connected to the elastic telescopic rod 16 through a hose. The telescopic end of the elastic telescopic rod 16 is fixedly connected to the outer wall of the pneumatic telescopic rod 5. When the telescopic end of the elastic telescopic rod 16 is extended, the flexible sealing pad 2 can be moved.

[0030] Fig. 9 As shown, an exhaust hole is provided on the outer wall of the elastic telescopic rod 16, and the flow control plate 4 and the fan blades 9 are both made of medical grade silicone.

[0031] First, adjust the total amount of anesthetic drugs according to the patient's condition, then wear the anesthesia nasal mask 1 on the patient's head through the elastic band, and fit the anesthesia nasal mask 1 to the skin around the patient's nose. Since each person's facial contour is different, the anesthesia nasal mask 1 cannot completely fit the skin around the nose of each patient. At this time, it is necessary to adjust the position of the flexible sealing pad 2. Initially, the telescopic end of the pneumatic telescopic rod 5 is in a contracted state, and the bottom surface of the flexible sealing pad 2 is at the same horizontal plane as the bottom surface of the anesthesia nasal mask 1. First, connect the balloon to the air inlet nozzle of the pneumatic telescopic rod 5 (the balloon is a prior art, commonly used in mercury sphygmomanometers, and will not be repeated here), and pinch the balloon so that the balloon can transport gas into the pneumatic telescopic rod 5. Inside, the telescopic end of the pneumatic telescopic rod 5 drives the flexible sealing pad 2 to fall obliquely downward. After falling, the flexible sealing pad 2 fits the skin around the patient's nose, and the flexible sealing pad 2 produces elastic deformation and fills the gap between the anesthesia nasal mask 1 and the skin around the nose. The squeezing force of the flexible sealing pad 2 on the skin around the patient's nose will not cause discomfort to the patient. Through the cooperation of the flexible sealing pad 2 and the anesthesia nasal mask 1, a sealed state can be formed between the skin around the patient's nose and the anesthesia nasal mask 1, thereby effectively preventing external air from entering the anesthesia nasal mask 1 when the patient inhales, resulting in a reduced efficiency in the patient's absorption of anesthetic drugs. Then the delivery tube of the anesthesia machine is inserted into the mounting ring 3 to complete the wearing of the anesthesia nasal mask 1.

[0032] After putting on the anesthesia nasal mask 1, start preoperative preparation. Because the patient is nervous before the operation and the patient's breathing rate is rapid, the medical staff will usually comfort the patient at this time, but some patients still cannot calm down quickly. At this time, it is necessary to increase the amount of anesthetic drugs inhaled by the patient at a single time to help the patient calm down as soon as possible. It is worth noting that the increase in the amount of anesthetic drugs inhaled at a single time is controlled within the range that the human body can tolerate. When the increased amount of anesthetic drugs is inhaled by the patient, it will not affect the patient's body, and the amount of anesthetic drugs inhaled by the patient will not exceed the starting amount. The total amount of anesthetic drugs is initially adjusted. When the patient inhales, the internal air pressure of the anesthesia nasal mask 1 decreases. The first valve plate 7 is affected by the air pressure and rotates downward with the connection of the drug control tube 6 as the center. The first valve plate 7 drives the wiping strip 13 to slide horizontally through the pull rope, and the second elastic member is extended by force. At this time, the inner cavity of the drug control tube 6 is connected with the anesthesia nasal mask 1, and the patient absorbs the anesthetic drugs in the drug control tube 6. At this time, the airflow in the drug control tube 6 and the rotating frame 8 flows rapidly, and the rapid flow of the airflow in the rotating frame 8 impacts the fan blades 9. The fan blades 9 drive the three flow control plates 4 to rotate rapidly through the rotating frame 8. The three flow control plates 4 slide away from each other under the influence of centrifugal force, and the first elastic member is extended by force. In this process, the three limit blocks 10 rub against the surfaces of the three flow control plates 4 respectively, and are driven by the flow control plates 4 to rotate with the connection of the rotating frame 8 as the center of the circle. After the three flow control plates 4 slide, the air flow disturbance in the rotating frame 8 is reduced, so that the air flow velocity in the rotating frame 8 is increased, thereby increasing the amount of anesthetic drugs passing through. Then the patient exhales, and the internal air pressure of the anesthesia nasal mask 1 increases. The first valve plate 7 is not affected by the air pressure and can move, and the second elastic member is retracted. The contraction drives the wiping strip 13 to slide and reset, and the wiping strip 13 drives the first valve plate 7 to rotate and reset through the pull rope, so that the inner cavity of the drug control tube 6 is no longer connected with the anesthesia nasal mask 1, and the gas exhaled by the patient will not enter the drug control tube 6, thereby preventing the gas exhaled by the patient from mixing with the anesthetic drug, resulting in a decrease in the concentration of the anesthetic drug and affecting the efficacy of the drug. Since the gas exhaled by the patient will cause water vapor to be generated on the inner wall of the anesthesia nasal mask 1, water droplets will form after long-term accumulation. During the sliding process of the wiping strip 13, the wiping strip 13 can wipe the inner wall of the anesthesia nasal mask 1, thereby clearing the water vapor.

[0033] After the internal air pressure of the anesthesia nasal mask 1 increases, the second valve plate 15 rotates toward the inside of the exhaust pipe 14 with the connection point of the exhaust pipe 14 as the center, so that the exhaust pipe 14 is connected to the anesthesia nasal mask 1, and the gas exhaled by the patient is discharged through the exhaust pipe 14. In this process, part of the gas enters the inner cavity of the elastic telescopic rod 16 through the hose, and part of the gas in the inner cavity of the elastic telescopic rod 16 is discharged through the exhaust holes thereon. It is worth noting that the speed at which the gas enters the inner cavity of the elastic telescopic rod 16 is greater than the speed at which the gas is discharged from the exhaust holes, thereby enabling the telescopic end of the elastic telescopic rod 16 to extend, and the telescopic movement of the elastic telescopic rod 16 drives the corresponding pneumatic telescopic rod 5 to slide obliquely upward, and the telescopic end of the pneumatic telescopic rod 5 drives the flexible sealing pad 2 The flexible sealing pad 2 slides to the side away from the skin around the patient's nose, thereby reducing the pressure of the flexible sealing pad 2 on the patient's skin and preventing the flexible sealing pad 2 from squeezing the skin around the patient's nose for a long time, resulting in indentations on the skin around the patient's nose, effectively improving the comfort of the patient wearing the anesthesia nasal mask 1. At this time, no air flow is generated in the rotating frame 8, and the fan blades 9 are no longer impacted by the air flow, so that the rotating frame 8 no longer drives the three flow control plates 4 to rotate. The three flow control plates 4 and the first elastic member contract to drive the corresponding flow control plates 4 to slide and reset. In this process, the three limit blocks 10 respectively rub against the surfaces of the three flow control plates 4, and are driven to rotate and reset by the friction force. When the limit blocks 10 rotate to Figure 4 After the state shown, the limit block 10 continues to rub against the surface of the flow control plate 4, and the sliding speed of the flow control plate 4 is slowed down due to the friction. Since the patient's breathing is relatively rapid at this time, when the patient inhales again, the three flow control plates 4 are not completely reset, and the three flow control plates 4 will not block the airflow in the rotating frame 8 too much, thereby ensuring that the patient's breathing remains smooth when the patient's breathing is relatively rapid.

[0034] Then the patient inhales, reducing the internal air pressure of the anesthesia nasal mask 1, and the second valve plate 15 rotates and resets under the influence of the air pressure, so that the exhaust pipe 14 is no longer connected to the anesthesia nasal mask 1, thereby preventing the patient from inhaling external air through the exhaust pipe 14, resulting in reduced anesthetic effect. At this time, no gas enters the inner cavity of the elastic telescopic rod 16 through the hose, and the remaining gas in the inner cavity of the elastic telescopic rod 16 is discharged through the exhaust holes thereon, and the telescopic end of the elastic telescopic rod 16 contracts, thereby causing the flexible sealing pad 2 to drop, thereby achieving the flexible sealing pad 2 floating up and down with the patient's breathing, and then repeating the above steps to allow the patient to efficiently inhale anesthetic drugs.

[0035] As the patient continues to inhale anesthetic drugs, the patient gradually calms down and the breathing rate gradually stabilizes. In this process, the rotation speed of the fan blades 9 changes with the patient's inhalation speed and frequency. When the patient's inhalation speed and frequency gradually decrease, the rotation speed of the fan blades 9 gradually decreases, and the fan blades 9 drive the rotation speed of the rotating frame 8 to gradually decrease, thereby gradually reducing the centrifugal force exerted on the three flow control plates 4. The three flow control plates 4 increase the blocking area of ​​the airflow in the drug control tube 6, so that the airflow speed through the drug control tube 6 is reduced, thereby reducing the amount of anesthetic drugs passing through. When the patient's breathing frequency is completely stable, the fan blades 9 drive the rotation speed of the rotating frame 8 to the minimum, the centrifugal force exerted on the three flow control plates 4 is less than the elastic force of the first elastic member, and the three flow control plates 4 no longer slide. At this time, the amount of anesthetic drugs passing through is reduced to the minimum, and the amount of anesthetic drugs passing through is sufficient for the patient to maintain an anesthesia state.

[0036] The above steps can effectively improve the comfort of the patient wearing the anesthesia nasal mask 1, and achieve accurate adjustment of the amount of anesthetic drugs according to the patient's breathing speed and frequency, thereby helping the patient to quickly stabilize his emotions.

[0037] After the operation is completed, the anesthesia nasal mask 1 is removed. At this time, the anesthesia nasal mask 1 needs to be disinfected to facilitate the next use of the anesthesia nasal mask 1. First, the mounting ring 3 is manually rotated clockwise, and the mounting ring 3 drives the two clamping blocks 12 to rotate. After the two clamping blocks 12 are rotated, they no longer contact the corresponding U-shaped blocks 11. Then, the mounting ring 3 is moved away from the drug control tube 6 to make the two clamping blocks 12 disengage from the guide groove of the drug control tube 6, thereby completing the separation of the mounting ring 3 and the drug control tube 6. The above steps can separate the mounting ring 3 from the anesthesia nasal mask 1, which is more convenient for disinfection. When it is used next time, the two clamping blocks 12 are inserted into the guide groove of the drug control tube 6, and the mounting ring 3 is rotated counterclockwise to make the two clamping blocks 12 engage with the corresponding U-shaped blocks 11 to complete the installation.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A closed anesthesia nasal mask, comprising an anesthesia nasal mask (1), characterized in that: The invention also comprises a fitting unit, the fitting unit comprising a flexible sealing pad (2), the flexible sealing pad (2) being symmetrically slidably connected to the anesthesia nasal mask (1), a drug control unit being arranged above the anesthesia nasal mask (1), the drug control unit comprising a drug control tube (6), the anesthesia nasal mask (1) being connected to the drug control tube (6), one side of the drug control tube (6) being connected to a mounting ring (3), a rotating frame (8) being rotatably connected inside the mounting ring (3), a plurality of uniformly distributed flow control plates (4) being slidably connected inside the rotating frame (8), and a first elastic member being arranged between the plurality of flow control plates (4) and the rotating frame (8).

2. The closed anesthesia nasal mask according to claim 1, characterized in that: The fitting unit further comprises a pneumatic telescopic rod (5), the pneumatic telescopic rod (5) being symmetrically slidably connected to the anesthesia nasal mask (1), and the telescopic end of the pneumatic telescopic rod (5) being fixedly connected to the top surface of the flexible sealing pad (2).

3. The closed anesthesia nasal mask according to claim 1, characterized in that: The drug control unit also includes a first valve plate (7), and the bottom of the drug control tube (6) is hingedly connected to the first valve plate (7).

4. The closed anesthesia nasal mask according to claim 1, characterized in that: The drug control unit also includes a fan blade (9), and the fan blade (9) is fixedly connected inside the rotating frame (8).

5. The closed anesthesia nasal mask according to claim 4, characterized in that: The drug control unit also includes a limit block (10), and a plurality of evenly distributed limit blocks (10) are hingedly connected to the rotating frame (8), and the plurality of limit blocks (10) are used in conjunction with a plurality of flow control plates (4).

6. The closed anesthesia nasal mask according to claim 3, characterized in that: It also comprises a U-shaped block (11), a guide groove is symmetrically provided on one side of the drug control tube (6), the U-shaped block (11) is fixedly connected in the guide groove, and a clamping block (12) is symmetrically installed on one side of the mounting ring (3), the clamping block (12) is used in conjunction with the guide groove and the U-shaped block (11) respectively.

7. The closed anesthesia nasal mask according to claim 3, characterized in that: It also includes a wiping strip (13), the inner wall of the anesthesia nasal mask (1) is slidably connected to the wiping strip (13), a second elastic member is provided between the wiping strip (13) and the inner wall of the anesthesia nasal mask (1), and the first valve plate (7) is connected to the wiping strip (13) via a drawstring.

8. The closed anesthesia nasal mask according to claim 7, characterized in that: It also comprises an exhaust pipe (14), one side of the anesthesia nasal mask (1) is symmetrically connected to the exhaust pipe (14), and a second valve plate (15) is hinged inside the exhaust pipe (14).

9. The closed anesthesia nasal mask according to claim 8, characterized in that: It also includes an elastic telescopic rod (16), which is symmetrically mounted on the anesthesia nasal mask (1), the exhaust pipe (14) and the elastic telescopic rod (16) are connected via a hose, and the telescopic end of the elastic telescopic rod (16) is fixedly connected to the outer wall of the pneumatic telescopic rod (5).

10. The closed anesthesia nasal mask according to claim 9, characterized in that: An exhaust hole is provided on the outer wall of the elastic telescopic rod (16).

11. The closed anesthesia nasal mask according to claim 5, characterized in that: The flow control plate (4) and the fan blades (9) are both made of medical-grade silicone.

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