Anesthesia mask

Abstract

The present invention relates to the field of medical masks. Disclosed is an anesthesia mask. In the technical solution of the present invention, the anesthesia mask comprises a mask body, wherein a gas hole is provided in the middle of the mask body, and the gas hole is externally connected to a gas reservoir; a backflow hole is provided in the side wall of the gas reservoir, several overflow holes are distributed in the lower portion of the mask body, an annular water-collecting receptacle is provided on the inner wall of the mask below the overflow holes, and a backflow tube in communication with the backflow hole is provided at outer hole openings of the overflow holes; and a water vapor adsorption member is detachably sleeved between the backflow hole and the backflow tube. By means of the present solution, gas circulating dehumidification can be achieved inside the mask body; in addition, a flowing gas can flow along the inner wall of the mask body, and the flow of air along the surface of the inner wall of the mask body is accelerated, thereby reducing the formation probability of water drops and preventing condensed water drops from dripping onto the face of a patient.

Description

An anesthesia mask Technical Field

[0001] The present invention relates to the field of medical masks, in particular to an anesthesia mask. Background Art

[0002] Anesthesia masks are used to deliver anesthetic gas, alleviating pain during surgery. During use, the mask is relatively closed, and the patient's breathing generates a large amount of water vapor. If the water vapor is not promptly handled, it can easily condense into water droplets on the inner wall of the mask, even dripping onto the patient's face or entering the patient's respiratory tract, causing discomfort or even life-threatening consequences. Current solutions to this technical problem, such as the anesthesia mask disclosed in patent document CN110215590A, simply include a humidity detection device to detect internal humidity. When the humidity exceeds a certain limit, medical staff will take action. This essentially does not address the problem of water droplets easily condensing inside the mask.

[0003] Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides an anesthesia mask. Through this solution, the gas circulation and dehumidification in the mask body can be realized, and the flowing gas can flow along the inner wall of the mask body, accelerating the speed of air flow on the inner wall surface of the mask body, reducing the probability of water droplets forming, and avoiding condensed water droplets on the patient's face.

[0005] The technical solution adopted by the present invention to solve the technical problem is: an anesthesia mask, comprising a mask body,

[0006] An air hole is provided in the middle of the mask body, and an air cylinder is externally connected to the air hole;

[0007] The side wall of the air cylinder is provided with a reflux hole, the lower part of the mask body is distributed with a plurality of overflow holes, the inner wall of the mask below the overflow hole is provided with an annular water collecting tank, and the outer opening of the overflow hole is provided with a reflux pipe connected to the reflux hole;

[0008] A water vapor adsorption component is detachably sleeved between the reflux hole and the reflux pipe.

[0009] This solution is achieved by setting an overflow hole, a reflux pipe and a reflux hole. Since the reflux hole is located on the side wall of the gas cylinder, the anesthetic gas and oxygen enter the mask body through the gas cylinder, so the air pressure at the gas cylinder will be lower. Therefore, the gas in the reflux hole and the reflux pipe will flow into the gas cylinder, that is, the gas in the mask body will enter the gas cylinder through the overflow hole, the reflux pipe and the reflux hole. When passing through the water vapor adsorption component, the water vapor can be adsorbed to reduce the humidity in the mask body to avoid the formation of water droplets. Moreover, since the overflow hole is located at the lower part of the mask body, if water droplets are formed, they will flow downward along the mask body. The overflow hole set there can accelerate the air flow rate on the surface of the water droplets, so that the water droplets evaporate again, or drain into the annular water collection tank for temporary storage in the annular water collection tank to avoid flowing onto the patient's face.

[0010] Preferably, a conical ring plate is provided inside the cylinder corresponding to the return hole, with the outer edge of the conical ring plate being fixed to the inner wall of the cylinder above the return hole, and the inner edge of the conical ring plate extending downward. The provision of the conical ring plate can further increase the flow rate of air at the return hole, thereby increasing the flow rate of gas circulation within the return pipe.

[0011] Preferably, an insertion hole is provided between the reflux hole and the reflux pipe, and the water vapor adsorbent includes an insert plate and a filter element provided on the insert plate, wherein the insert plate is inserted into the insertion hole. By providing a removable water vapor adsorbent, it can be replaced when the water vapor adsorption exceeds the load.

[0012] Preferably, the outer wall of the mask body is provided with a water absorption groove, the water absorption groove being connected to the annular water collection groove, and a water absorption member is provided in the water absorption groove. The water absorption groove is connected to the annular water collection groove, so that the water in the annular water collection groove can be cleaned without removing the mask body. The water in the water absorption groove is quickly absorbed by the water absorption member, making it easier to drain the water from the annular water collection groove.

[0013] Preferably, the notch of the water absorption groove is provided with a sealing cover to maintain the sealing of the mask body and prevent the leakage of anesthetic gas.

[0014] Preferably, an annular guide plate is provided inside the mask body corresponding to the lower portion of the air hole, and the annular guide plate extends from the lower portion of the air hole toward the periphery, with a guide gap being provided between the annular guide plate and the mask body. The annular guide plate can be used to guide the gas entering from the air hole toward the periphery, so that the gas flows from the inner wall of the mask body toward the periphery, that is, the gas entering the mask body flows along the inner wall, accelerating the air flow rate on the inner wall surface of the mask. The faster air flow rate can accelerate evaporation, making it difficult for water droplets to form on the inner wall of the mask, so that the water vapor can flow better toward the outer opening below, and then enter the circulation of the reflux pipe, so that the water vapor can be adsorbed and filtered by the water vapor adsorption element. This solution does not mean that all incoming gas is guided toward the periphery. The middle portion of the annular guide plate can still pass most of the gas for normal anesthesia and oxygen supply.

[0015] Preferably, the shape of the annular guide plate corresponding to the inner wall of the mask body is a conical structure with an outer edge tilted downward, which can better block the inner wall of the mask body that enters.

[0016] Preferably, the lower surface of the annular guide plate is made of velvet material, which makes it more difficult for water droplets to form aggregates.

[0017] Preferably, the annular guide plate is fixed to the mask body via a connecting bracket, which makes it more convenient to set the annular guide plate.

[0018] Preferably, a guide tube is provided between the annular guide plate and the overflow hole, and a plurality of diversion holes are provided on the sidewall of the guide tube. The guide tube can more easily guide the diverted gas to the overflow hole, while allowing part of the diverted gas to flow into the mask body through the diversion holes, thus performing a diversion effect, thereby supplying anesthetic gas and oxygen to the patient from all sides.

[0019] Advantages of the present invention:

[0020] This solution can achieve gas circulation and dehumidification inside the mask body, and the flowing gas can flow along the inner wall of the mask body, accelerating the air flow speed on the inner wall surface of the mask body, reducing the probability of water droplets forming, and avoiding condensed water droplets on the patient's face. The power of the gas circulating inside the mask body comes from the external oxygen and anesthesia supply device, and no other power is required. It is more convenient to use and can significantly improve the comfort and safety of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only two of the drawings of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] FIG1 is a schematic diagram of an embodiment of the present invention (without a water absorbing member);

[0023] FIG2 is a second schematic diagram of an embodiment of the present invention (with a water absorbing member);

[0024] Among them, the mask body 1, the air cylinder 2, the annular guide plate 3, the connecting bracket 4, the reflux pipe 5, the plug plate 6, the filter element 7, the conical ring plate 8, the reflux hole 9, the overflow hole 10, the annular water collecting trough 11, the water suction trough 12, the guide tube 13, the diversion hole 14, the water absorption part 15, and the sealing cover 16. DETAILED DESCRIPTION

[0025] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The embodiments are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0026] Example

[0027] As shown in Figure 1, an anesthesia mask includes a mask body 1, an air hole is provided in the middle of the mask body 1, and the air hole is externally connected to an air cylinder 2; a reflux hole 9 is provided on the side wall of the air cylinder 2, and a plurality of overflow holes 10 are distributed on the lower part of the mask body 1, and an annular water collecting tank 11 is provided on the inner wall of the mask below the overflow hole 10, and the outer opening of the overflow hole 10 is provided with a reflux pipe 5 connected to the reflux hole 9; a water vapor adsorption component is detachably provided between the reflux hole 9 and the reflux pipe 5.

[0028] This solution is achieved by setting an overflow hole 10, a reflux pipe 5 and a reflux hole 9. Since the reflux hole 9 is located on the side wall of the gas cylinder 2, the anesthetic gas and oxygen enter the mask body 1 through the gas cylinder 2. Therefore, the air pressure at the gas cylinder 2 will be lower, so the gas in the reflux hole 9 and the reflux pipe 5 will flow into the gas cylinder 2, that is, the gas in the mask body 1 will enter the gas cylinder 2 through the overflow hole 10, the reflux pipe 5 and the reflux hole 9. When passing through the water vapor adsorption component, the water vapor can be adsorbed to reduce the humidity in the mask body 1 to avoid the formation of water droplets. Moreover, since the overflow hole 10 is located at the lower part of the mask body 1, if water droplets are formed, they will flow downward along the mask body 1. The overflow hole 10 set there can accelerate the air flow rate on the surface of the water droplets, so that the water droplets evaporate again, or drain into the annular water collection tank 11 for temporary storage in the annular water collection tank 11 to avoid flowing onto the patient's face.

[0029] A conical ring plate 8 is provided inside the gas cylinder 2, corresponding to the return hole 9. The outer edge of the conical ring plate 8 is fixed to the inner wall of the gas cylinder 2 above the return hole 9, and the inner edge of the conical ring plate 8 extends downward. The provision of the conical ring plate 8 further increases the flow rate of air at the return hole 9, thereby increasing the flow rate of gas circulation within the return pipe 5.

[0030] An insertion hole is provided between the return hole 9 and the return pipe 5. The water vapor adsorbent includes an insert plate 6 and a filter element 7 mounted on the insert plate 6. The insert plate 6 is inserted into the insertion hole. The removable water vapor adsorbent allows replacement when the water vapor adsorption load exceeds the limit. The filter element 7 used in this embodiment is a calcium chloride or silica desiccant.

[0031] The outer wall of the mask body 1 is provided with a water absorption groove 12, which is connected to the annular water collection groove 11. A water absorbent member 15 is disposed within the water absorption groove 12. The water absorption groove 12 is connected to the annular water collection groove 11, so the water in the annular water collection groove 11 can be cleaned without removing the mask body. The water in the water absorption groove 12 is quickly absorbed by the water absorbent member 15, making it easier to drain the water from the annular water collection groove 11. In this embodiment, the water absorbent member 15 is made of cotton.

[0032] The notch of the water absorption groove 12 is provided with a sealing cover 16. The sealing performance of the mask body is maintained to avoid leakage of anesthetic gas.

[0033] An annular guide plate 3 is provided inside the mask body 1, corresponding to the area below the air hole. The annular guide plate 3 extends from the bottom of the air hole toward the periphery, and a guide gap is left between the annular guide plate 3 and the mask body 1. The annular guide plate 3 can guide the gas entering from the air hole toward the periphery, so that the gas flows from the inner wall of the mask body toward the periphery, that is, the gas entering the mask body flows along the inner wall, accelerating the air flow rate on the inner wall surface of the mask. The faster air flow rate can accelerate evaporation, making it difficult for water droplets to form on the inner wall of the mask, allowing water vapor to flow better toward the outer opening below, and then enter the circulation of the return pipe 5, so that the water vapor can be adsorbed and filtered by the water vapor adsorption element. This solution does not mean that all incoming gas is guided toward the periphery. The middle part of the annular guide plate 3 can still pass most of the gas to ensure normal anesthesia and oxygen supply.

[0034] The shape of the annular guide plate 3 corresponding to the inner wall of the mask body 1 is a conical structure with an outer edge tilted downward, which can better block the inner wall of the mask body 1 that enters.

[0035] The lower surface of the annular guide plate is made of velvet material, which makes it more difficult for water droplets to gather and no drop-shaped water will be formed.

[0036] The annular guide plate 3 is fixed to the mask body 1 via a connecting bracket 4. The annular guide plate 3 is more convenient to set.

[0037] A guide tube 13 is provided between the annular guide plate 3 and the overflow hole 10. The sidewall of the guide tube 13 is provided with a plurality of diverter holes 14. The guide tube 13 can more easily guide the diverted gas to the overflow hole 10, while the diverter holes 14 can allow part of the diverted gas to flow into the mask body 1, thus performing a diversion function, thereby supplying anesthetic gas and oxygen to the patient from all sides.

[0038] Through this solution, the gas circulation and dehumidification in the mask body 1 can be achieved, and the flowing gas can flow along the inner wall of the mask body 1, accelerating the speed of air flow on the inner wall surface of the mask body 1, reducing the probability of forming water droplets, and avoiding condensed water droplets on the patient's face. The power of the gas circulating inside the mask body 1 comes from the external oxygen and anesthesia supply device, and no other power is required. It is more convenient to use and can significantly improve the comfort and safety of the patient.

[0039] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. An anesthesia mask, characterized in that: The invention comprises a mask body (1), An air hole is provided in the middle of the mask body (1), and an air cylinder (2) is externally connected to the air hole; The side wall of the gas cylinder (2) is provided with a reflux hole (9), the lower part of the mask body (1) is provided with a plurality of overflow holes (10), the inner wall of the mask below the overflow holes (10) is provided with an annular water collecting groove (11), and the outer opening of the overflow hole (10) is provided with a reflux pipe (5) connected with the reflux hole (9); A water vapor adsorption component is detachably sleeved between the reflux hole (9) and the reflux pipe (5).

2. An anesthesia mask according to claim 1, characterized in that: A conical ring plate (8) is arranged inside the gas cylinder (2) corresponding to the reflux hole (9), the outer edge of the conical ring plate (8) is fixed to the inner wall of the gas cylinder (2) above the reflux hole (9), and the inner edge of the conical ring plate (8) extends downward.

3. An anesthesia mask according to claim 1, characterized in that: An insertion hole is provided between the reflux hole (9) and the reflux pipe (5); the water vapor adsorbent comprises an insertion plate (6) and a filter element (7) arranged on the insertion plate (6); the insertion plate (6) is inserted into the insertion hole.

4. An anesthesia mask according to claim 1, characterized in that: The outer wall of the mask body (1) is provided with a water absorption groove (12), the water absorption groove (12) is connected with the annular water collecting groove (11), and a water absorption member (15) is provided in the water absorption groove (12).

5. An anesthesia mask according to claim 4, characterized in that: The notch of the water absorption groove (12) is provided with a sealing cover (16).

6. An anesthesia mask according to claim 1, characterized in that: An annular guide plate (3) is arranged inside the mask body (1) and corresponds to the lower part of the air hole. The annular guide plate (3) extends from the lower part of the air hole to the outer periphery. A guide gap is left between the annular guide plate (3) and the mask body (1).

7. An anesthesia mask according to claim 6, characterized in that: The shape of the annular guide plate (3) corresponding to the inner wall of the mask body (1) is a conical structure with the outer edge tilted downward.

8. An anesthesia mask according to claim 6, characterized in that: The lower surface of the annular guide plate (3) is made of velvet material.

9. An anesthesia mask according to claim 6, characterized in that: The annular guide plate (3) and the mask body (1) are fixed via a connecting bracket (4).

10. An anesthesia mask according to claim 6, characterized in that: A guide tube (13) is provided between the annular guide plate (3) and the overflow hole (10), and a plurality of diversion holes (14) are provided on the side wall of the guide tube (13).

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