Nasal mask for high-concentration oxygen inhalation

Abstract

The utility model relates to the technical field of medical instruments, in particular to a high-concentration oxygen inhalation nasal mask which comprises a nasal mask body and is characterized in that the nasal mask body is provided with an opening portion attached to a human body, an air storage cavity is formed in the nasal mask body, an air inlet through hole penetrating through the air storage cavity is formed in the nasal mask body, and the air inlet through hole is communicated with the air storage cavity. Two air outlet through holes penetrating through the air storage chamber are formed in the bottom of the nasal mask body; a first one-way valve mechanism is arranged in the air inlet through hole, and a second one-way valve mechanism is arranged in each air outlet through hole; the air inlet through hole is connected with external oxygen supply equipment; during use, the two air outlet through holes are located under the nostrils of the human body. The first one-way valve mechanism and the second one-way valve mechanism are arranged, and the air outlet through hole is right opposite to the lower portion of the nostril of the human body, so that waste gas exhaled from the nostril of the human body is directly exhausted through the air outlet through hole, the waste gas is prevented from staying in the air storage cavity and being repeatedly inhaled by the human body, and the oxygen inhalation concentration is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a nasal mask for high-concentration oxygen inhalation. Background Art

[0002] Hyperbaric oxygen chamber refers to a high-pressure environment in which the user breathes pure oxygen or high-concentration oxygen for treatment or health care. Currently, in the medical industry, when supplying oxygen to patients with spontaneous breathing, most people use medical oronasal masks; however, due to the large area of ​​the oronasal mask and the large differences in face shape of each person, it is difficult to ensure that every position of the oronasal mask opening fits closely to the human body, which can easily cause oxygen leakage and air ingress, reducing the concentration of oxygen inhalation; and when the user needs to suction sputum or place a gastric tube, it is very inconvenient to use an oronasal mask.

[0003] In recent years, nasal masks for oxygen inhalation have gradually appeared to replace oral and nasal masks. For example, a Chinese utility model patent (publication number CN209060276U) discloses a high-concentration oxygen inhalation nasal mask, including a mask body and an elastic band. The mask body is provided with a sealing edge, which includes a nose bridge sealing edge, an upper lip sealing edge and two nose side sealing edges. The mask body is provided with a one-way exhaust mechanism and an oxygen inlet pipe. An oxygen supply cavity is formed in the middle of the mask body, and the oxygen supply cavity is connected to the one-way exhaust mechanism and the oxygen inlet pipe respectively. However, the exhaust hole of the above-mentioned nasal mask is located on the front side of the mask body. When the nostrils exhale, the airflow direction is downward. Since the position of the exhaust hole is not directly facing the exhalation airflow direction, the exhaust gas discharged from the nostrils cannot be discharged directly from the exhaust hole, so that the exhaust gas needs to stay in the cavity for a short time, which may cause the exhaust gas to be repeatedly inhaled by the human body, thereby reducing the oxygen concentration.

[0004] Therefore, it is necessary to provide a technical solution to solve the above problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model proposes a nasal mask for high-concentration oxygen inhalation, which adopts the following technical solutions:

[0006] A nasal mask for high-concentration oxygen inhalation comprises a nasal mask body, wherein the nasal mask body is provided with an opening portion that fits the human body, an air storage chamber is formed inside the nasal mask body, an air inlet hole penetrating the air storage chamber is provided on the nasal mask body, and two air outlet holes penetrating the air storage chamber are provided at the bottom of the nasal mask body; a first one-way valve mechanism is provided in the air inlet hole, and a second one-way valve mechanism is provided in each of the air outlet holes; the air inlet hole is connected to an external oxygen supply device; when in use, the two air outlet holes are located directly below the human nostrils.

[0007] Furthermore, the first one-way valve mechanism includes a first valve seat connected to the air inlet through hole, a connecting pipe is connected to the first valve seat, the connecting pipe is connected to the air storage chamber, and the lower end of the connecting pipe is connected to an external oxygen supply device; a plurality of first through holes are arranged between the first valve seat and the connecting pipe, a first valve plate is also connected to the first valve seat, the first valve plate is located at the upper ends of the plurality of first through holes, and the first valve plate can control the opening or closing of the plurality of first through holes.

[0008] Furthermore, the outer wall of the connecting tube is connected to the inner wall of the air intake hole by a plurality of first connecting rods, and a plurality of guide protrusions are arranged outward on the outer wall of the upper end of the connecting tube, and the upper surface of the guide protrusions is inclined downward; the first valve plate is sleeved on the outer side of the connecting tube, and the first valve plate is located between the first connecting rod and the guide protrusions.

[0009] Furthermore, the second one-way valve mechanism includes a second valve seat connected to the inner wall of the air outlet hole, a plurality of second through holes are arranged between the second valve seat and the inner wall of the air outlet hole, a second valve plate is also connected to the second valve seat, the second valve plate is located at the lower end of the plurality of second through holes, and the second valve plate can control the opening or closing of the plurality of second through holes.

[0010] Furthermore, the second valve seat includes a mounting ring and a plurality of second connecting rods arranged on the outer wall of the mounting ring, the other ends of the plurality of second connecting rods are connected to the inner wall of the air outlet hole, and a plug-in portion is provided at the center of the second valve plate, and the plug-in portion is plugged into the mounting ring.

[0011] Furthermore, the air inlet hole is arranged at the bottom of the nasal mask body.

[0012] Furthermore, clamping rings are provided on both sides of the nasal mask body, and fixing belts are connected to the clamping rings.

[0013] Furthermore, the opening portion includes a contact edge, and the contact edge is formed by bending the edge of the nasal mask body toward the interior of the air storage chamber.

[0014] Furthermore, the contact edge includes a first arc segment that contacts the bridge of a human nose and a second arc segment that contacts the upper lip of a human body, and a curvature radius of the first arc segment is smaller than a curvature radius of the second arc segment.

[0015] Furthermore, the volume of the gas storage chamber is greater than or equal to 130 mL.

[0016] Beneficial effects of the utility model:

[0017] (1) By setting a first one-way valve mechanism, when inhaling, the user inhales the oxygen in the air storage chamber, and at the same time, the oxygen supply device continuously provides oxygen to replenish the air storage chamber. When the inhalation speed is greater than the speed at which the oxygen supply device replenishes oxygen, the air pressure in the air storage chamber is lower than the external air pressure. At this time, the external air will break through the first one-way valve mechanism and enter the air storage chamber. In this way, the amount of air entering the air storage chamber accounts for a small proportion, thereby ensuring the oxygen concentration.

[0018] (2) By setting the second one-way valve mechanism and arranging the two air outlet holes just below the human nostrils, when exhaling, the direction of the waste gas exhaled from the nose is downward. Since the air outlet holes are just below the human nostrils, the waste gas discharged from the nostrils can directly break through the second one-way valve mechanism 4 and be discharged to the outside, which can ensure that the waste gas is discharged quickly. At the same time, the oxygen supply equipment continuously replenishes oxygen into the gas storage chamber to ensure that pure oxygen is stored in the gas storage chamber during the next inhalation, thereby preventing the waste gas discharged from the nose from being inhaled by the human body again, and further ensuring the oxygen concentration.

[0019] (3) By providing a contact edge including a first arc segment that contacts the bridge of the human nose and a second arc segment that contacts the upper lip of the human body, the opening is better fitted to the human body, preventing air from flowing into the air storage chamber from the opening, thereby further ensuring the oxygen absorption concentration; and the contact edge has a certain width, thereby increasing the contact area between the opening and the human body, and improving the comfort of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a schematic structural diagram of a nasal mask for high-concentration oxygen inhalation.

[0021] Figure 2 This is a schematic structural diagram of the high-concentration oxygen inhalation nasal mask of the utility model from another angle.

[0022] Figure 3 This is another structural schematic diagram of the high-concentration oxygen inhalation nasal mask of the present invention from another angle.

[0023] Figure 4 It is a structural schematic diagram of the nasal mask body of the present utility model.

[0024] Figure 5 It is a structural schematic diagram of the first valve seat and the first valve plate of the utility model.

[0025] Figure 6 It is a structural schematic diagram of the first valve seat of the utility model.

[0026] Figure 7 for Figure 6 Schematic diagram of the structure at A in the middle.

[0027] Figure 8It is a structural schematic diagram of the first valve plate of the utility model.

[0028] Fig. 9 It is a structural schematic diagram of the second valve plate of the utility model.

[0029] Description of reference numerals:

[0030] 1-nasal mask body; 11-opening; 111-contact edge; 112-first arc segment; 113-second arc segment; 12-air storage chamber; 13-air inlet hole; 14-air outlet hole; 15-clamping ring; 3-first one-way valve mechanism; 31-first valve seat; 32-connecting pipe; 33-first through hole; 34-first valve plate; 35-first connecting rod; 36-guide protrusion; 361-upper surface; 4-second one-way valve mechanism; 41-second valve seat; 411-mounting ring; 412-second connecting rod; 42-second through hole; 43-second valve plate; 431-plug-in part. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0032] like Figures 1 to 9 As shown, the utility model provides a nasal mask for high-concentration oxygen inhalation, including a nasal mask body 1, wherein the nasal mask body 1 is provided with an opening portion 11 that fits the human body, an air storage chamber 12 is formed inside the nasal mask body 1, an air inlet through hole 13 penetrating the air storage chamber 12 is provided on the nasal mask body 1, and two air outlet through holes 14 penetrating the air storage chamber 12 are provided at the bottom of the nasal mask body 1; a first one-way valve mechanism 3 is provided in the air inlet through hole 13, and a second one-way valve mechanism 4 is provided in each of the air outlet through holes 14; the air inlet through hole 13 is connected to an external oxygen supply device; when in use, the two air outlet through holes 14 are located directly below the nostrils of the human body.

[0033] During actual use, the opening 11 of the nasal mask body 1 is closely fitted to the outer part of the human nose. At this time, the two air outlet holes 14 are just located directly below the human nostrils; the air inlet hole 13 is connected to an external oxygen supply device, such as an oxygen generator, through a pipeline, and the oxygen provided by the oxygen supply device fills the entire air storage chamber 12; when inhaling, the oxygen in the air storage chamber 12 is inhaled into the human body, and at the same time, the oxygen supply device continuously provides oxygen to replenish the air storage chamber 12. When the speed of inhalation is greater than the speed of the oxygen supply device replenishing oxygen, the air pressure in the air storage chamber 12 is lower than the external air pressure, and at this time, the external air will break through the first one-way valve mechanism 3 to enter Into the air storage chamber 12, by setting the first one-way valve mechanism 3, the amount of air entering the air storage chamber 12 accounts for a small proportion, thereby ensuring the oxygen concentration; when exhaling, the exhaust gas exhaled from the nose flows downward, and because the air outlet hole 14 is just below the human nostrils, the exhaust gas discharged from the nostrils can directly break through the second one-way valve mechanism 4 and be discharged to the outside, which can ensure that the exhaust gas is quickly discharged to the outside. At the same time, the oxygen supply equipment continuously replenishes oxygen into the air storage chamber 12, ensuring that pure oxygen is stored in the air storage chamber 12 during the next inhalation, preventing the exhaust gas discharged from the nose from being inhaled by the human body again, and further ensuring the oxygen concentration. Specifically, the nasal mask body is made of medical-grade TPE material, which has good elasticity and flexibility and can fit closely to the human body.

[0034] Furthermore, the first one-way valve mechanism 3 includes a first valve seat 31 connected to the air intake through hole 13. Preferably, the first valve seat 31 is inserted into the air intake through hole 13 to increase the connection stability between the first valve seat 31 and the air intake through hole 13; a connecting pipe 32 is connected to the first valve seat 31, the connecting pipe 32 is connected to the air storage chamber 12, and the lower end of the connecting pipe 32 is connected to an external oxygen supply device; specifically, a pipeline is inserted into the lower end of the connecting pipe 32, and the connecting pipe can be connected to the oxygen supply device through the pipeline, and the connection method is simple and fast; a plurality of first through holes 33 are arranged between the first valve seat 31 and the connecting pipe 32, and a first valve plate 34 is also connected to the first valve seat 31, the first valve plate 34 is located at the upper ends of the plurality of first through holes 33, and the first valve plate 34 can control the opening or closing of the plurality of first through holes 33. In this embodiment, when the speed of inhalation is greater than the speed of oxygen replenishment by the oxygen supply device, the air pressure in the air storage chamber 12 is lower than the external air pressure. At this time, the external air will break open the first valve plate 34 and enter the air storage chamber 12 through the first through hole 33. The first one-way valve mechanism 3 is arranged in this way, the structure is simple, and it is easy to control the amount of air entering the air storage chamber 12, thereby ensuring the oxygen concentration.

[0035] Furthermore, the outer wall of the connecting pipe 32 is connected to the inner wall of the air inlet hole 13 by a plurality of first connecting rods 35, and a plurality of guide protrusions 36 are provided outwardly on the outer wall of the upper end of the connecting pipe 32, and the upper surface 361 of the guide protrusion 36 is arranged to be inclined downward; specifically, the plurality of guide protrusions 36 are evenly spaced along the outer wall of the upper end of the connecting pipe 32; the first valve plate 34 is sleeved on the outer side of the connecting pipe 32, and the first valve plate 34 is located between the first connecting rod 35 and the guide protrusion 36. In this embodiment, the position of the first valve plate 34 on the outer side of the connecting pipe 32 is limited by the first connecting rod 35 and the guide protrusion 36, and the downwardly inclined upper surface 361 is provided, so that the first valve plate 34 can be guided to be sleeved between the first connecting rod 35 and the guide protrusion 36 from top to bottom, thereby facilitating the replacement of the first valve plate 34.

[0036] Further, the second one-way valve mechanism 4 includes a second valve seat 41 connected to the inner wall of the gas outlet through hole 14, a plurality of second through holes 42 are arranged between the second valve seat 41 and the inner wall of the gas outlet through hole 14, a second valve plate 43 is also connected to the second valve seat 41, the second valve plate 43 is located at the lower end of the plurality of second through holes 42, and the second valve plate 43 can control the opening or closing of the plurality of second through holes 42. Preferably, the second valve seat 41 includes a mounting ring 411, and a plurality of second connecting rods 412 arranged on the outer wall of the mounting ring 411, the other ends of the plurality of second connecting rods 412 are connected to the inner wall of the gas outlet through hole 14, a plug-in portion 431 is arranged at the center of the second valve plate 43, and the plug-in portion 431 is plugged into the mounting ring 411. In the present embodiment, when exhaling, the direction of the exhaust gas exhaled from the nose is downward. Since the exhaust hole 14 is located just below the human nostrils, the exhaust gas discharged from the nostrils can directly break through the second valve plate 43 and be discharged to the outside through the second hole 42. The second one-way valve mechanism 4 is arranged in this way, the structure is simple, and can ensure that the exhaust gas is quickly discharged to the outside, preventing the exhaust gas discharged from the nose from being inhaled by the human body again, and further ensuring the oxygen concentration.

[0037] Furthermore, the air inlet hole 13 is arranged at the bottom of the nasal mask body 1. Such arrangement makes the overall structure of the nasal mask body 1 more concise and beautiful.

[0038] Furthermore, a clamp ring 15 is provided on both sides of the nasal mask body 1, and a fixing belt is connected to the clamp ring 15. In this embodiment, by providing the clamp ring 15, it is convenient to connect the fixing belt, and the nasal mask is conveniently fixed on the human body through the fixing belt, freeing both hands.

[0039] Furthermore, the opening 11 includes a contact edge 111, and the contact edge 111 is formed by bending the edge of the nasal mask body 1 toward the inside of the air storage chamber 12. In this embodiment, by bending the edge of the nasal mask body 1 toward the inside of the air storage chamber 12 to form a contact edge 111 with a certain width, the contact area between the opening and the human body is increased, and the comfort of use is better.

[0040] Furthermore, the contact edge 111 includes a first arc segment 112 in contact with the bridge of the human nose and a second arc segment 113 in contact with the upper lip of the human body, and the curvature radius of the first arc segment 112 is smaller than the curvature radius of the second arc segment 113. In this embodiment, by providing the first arc segment 112 and the second arc segment 113, the opening is better fitted to the human body, preventing air from flowing into the air storage chamber 12 from the opening, and further ensuring the oxygen absorption concentration.

[0041] Furthermore, the volume of the gas storage chamber 12 is greater than or equal to 130 mL; preferably, the volume of the gas storage chamber 12 is 140 mL. Since the human body inhales about 500mL of gas each time it inhales, the human body breathes 18 times per minute, that is, each inhalation takes about 1.66 seconds, and the oxygen supply speed of the oxygen supply equipment is about 166mL / s. Therefore, during each inhalation, the volume of pure oxygen inhaled is 140mL+276mL(1.66s*166mL / s)=416mL. Therefore, during each inhalation, the volume of air entering the air storage chamber 12 is 500mL-416mL=84mL, and the oxygen content in 84mL of air is about 17mL. Therefore, the total content of inhaled oxygen during each inhalation is 416mL+17mL=433mL, and the oxygen concentration is 433mL / 500mL*100%=86.6%; therefore, by such a setting, it can be ensured that the oxygen concentration of each inhalation is above 85%, thereby achieving high-concentration oxygen inhalation.

[0042] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A nasal mask for high-concentration oxygen inhalation, comprising a nasal mask body (1), characterized in that: The nasal mask body (1) is provided with an opening (11) that fits the human body, an air storage chamber (12) is formed inside the nasal mask body (1), an air inlet hole (13) penetrating the air storage chamber (12) is provided on the nasal mask body (1), and two air outlet holes (14) penetrating the air storage chamber (12) are provided at the bottom of the nasal mask body (1); a first one-way valve mechanism (3) is provided in the air inlet hole (13), and a second one-way valve mechanism (4) is provided in each of the air outlet holes (14); the air inlet hole (13) is connected to an external oxygen supply device; when in use, the two air outlet holes (14) are located directly below the nostrils of the human body.

2. The high-concentration oxygen inhalation nasal mask according to claim 1, characterized in that: The first one-way valve mechanism (3) comprises a first valve seat (31) connected to the air intake through hole (13); a connecting pipe (32) is connected to the first valve seat (31); the connecting pipe (32) is connected to the air storage chamber (12); the lower end of the connecting pipe (32) is connected to an external oxygen supply device; a plurality of first through holes (33) are arranged between the first valve seat (31) and the connecting pipe (32); a first valve plate (34) is also connected to the first valve seat (31); the first valve plate (34) is located at the upper ends of the plurality of first through holes (33), and the first valve plate (34) can control the opening or closing of the plurality of first through holes (33).

3. The high-concentration oxygen inhalation nasal mask according to claim 2, characterized in that: The outer wall of the connecting pipe (32) and the inner wall of the air inlet hole (13) are connected via a plurality of first connecting rods (35); a plurality of guide protrusions (36) are arranged outwardly on the outer wall of the upper end of the connecting pipe (32); the upper surface (361) of the guide protrusion (36) is arranged to be inclined downward; the first valve plate (34) is sleeved on the outer side of the connecting pipe (32), and the first valve plate (34) is located between the first connecting rod (35) and the guide protrusion (36).

4. The high-concentration oxygen inhalation nasal mask according to claim 1, characterized in that: The second one-way valve mechanism (4) comprises a second valve seat (41) connected to the inner wall of the air outlet through hole (14); a plurality of second through holes (42) are arranged between the second valve seat (41) and the inner wall of the air outlet through hole (14); a second valve plate (43) is also connected to the second valve seat (41); the second valve plate (43) is located at the lower end of the plurality of second through holes (42), and the second valve plate (43) can control the opening or closing of the plurality of second through holes (42).

5. The high-concentration oxygen inhalation nasal mask according to claim 4, characterized in that: The second valve seat (41) comprises a mounting ring (411) and a plurality of second connecting rods (412) arranged on the outer wall of the mounting ring (411), the other ends of the plurality of second connecting rods (412) are connected to the inner wall of the air outlet hole (14), and a plug-in portion (431) is arranged at the center of the second valve plate (43), and the plug-in portion (431) is plugged into the mounting ring (411).

6. The high-concentration oxygen inhalation nasal mask according to claim 1, characterized in that: The air inlet hole (13) is arranged at the bottom of the nasal mask body (1).

7. The high-concentration oxygen inhalation nasal mask according to claim 1, characterized in that: Clamps (15) are provided on both sides of the nasal mask body (1), and fixing belts are connected to the clamps (15).

8. The high-concentration oxygen inhalation nasal mask according to claim 1, characterized in that: The opening portion (11) comprises a contact edge (111), and the contact edge (111) is formed by bending the edge of the nasal mask body (1) toward the interior of the air storage chamber (12).

9. The high-concentration oxygen inhalation nasal mask according to claim 8, characterized in that: The contact edge (111) comprises a first arc segment (112) in contact with a human nose bridge and a second arc segment (113) in contact with a human upper lip, wherein the curvature radius of the first arc segment (112) is smaller than the curvature radius of the second arc segment (113).

10. The high-concentration oxygen inhalation nasal mask according to claim 1, characterized in that: The volume of the gas storage chamber (12) is greater than or equal to 130 mL.

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