Oxygen flow meter and oxygen supply system

Abstract

The present invention relates to the field of medical device technology, and specifically to an oxygen flow meter and an oxygen supply system, wherein an oxygen flow meter comprises a meter body and a humidification bottle, a venting tube is arranged on the meter body, and a plurality of through holes are arranged on the side wall of the venting tube; a floating member and a covering member are arranged on the venting tube, the floating member and the venting tube can be slidably matched, one end of the covering member is connected to the outer wall of the venting tube, and the other end is connected to the floating member, the covering member is cylindrical and is sleeved on the venting tube; the end of the venting tube close to the bottom of the humidification bottle is the first end, when the floating member is not affected by buoyancy, the floating member is located at the first end of the venting tube; when the floating member is affected by buoyancy, the floating member can float on the liquid surface; the oxygen in the venting tube is discharged from the through hole on the venting tube located below the floating member. The oxygen flow meter and oxygen supply system of the present application can reduce the energy consumption of the oxygen supply system, and facilitate the patient to quickly inhale humidified oxygen during the startup phase of the oxygen supply system.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an oxygen flow meter and an oxygen supply system. Background Art

[0002] A flow meter is an instrument for monitoring the oxygen inhalation flow of a patient, wherein the flow meter comprises a meter body and a humidification bottle. The ventilation tube on the meter body is inserted into the humidification bottle. Oxygen flows into the meter body and then flows out from the pipe. The outlet of the pipe is located below the liquid surface, so that the oxygen escaping from the outlet of the pipe can be moistened by the liquid, thereby making the oxygen output from the oxygen flow meter moistened.

[0003] Although the current flow meter can improve the humidity of the oxygen inhaled by the patient, the inventors found that the current oxygen flow meter still has some shortcomings during actual use, specifically:

[0004] The opening of the current ventilation tube is usually located at the bottom of the humidification bottle, so that the opening of the ventilation tube is at a long distance from the liquid surface in the humidification bottle. Although it can improve the utilization rate of the liquid in the humidification bottle and improve the efficiency of the liquid in humidifying oxygen,

[0005] However, since the opening of the ventilation tube is always in the bottom area of ​​the humidification bottle, when there is more liquid in the humidification bottle, the opening of the ventilation tube is at a deeper position in the liquid, and the oxygen in the ventilation tube needs to overcome the pressure of the deeper liquid to discharge the oxygen from the opening into the liquid in the humidification bottle, thereby increasing the difficulty of oxygen entering the humidification bottle through the ventilation tube, increasing the energy consumption of the oxygen supply system, and in the startup stage of the oxygen supply system, in the process of oxygen entering the liquid in the humidification bottle through the ventilation tube and then being discharged from the humidification bottle, the oxygen needs to reach the bottom of the humidification bottle through the ventilation tube, then move from the bottom of the humidification bottle to the top of the humidification bottle, and then be discharged from the top of the humidification bottle. In this way, when the liquid content in the humidification bottle is relatively high, the path and duration of the oxygen moving in the flow meter are increased, which is not conducive to the patient to quickly inhale humidified oxygen during the startup stage of the oxygen supply system.

[0006] Therefore, based on the above-mentioned deficiencies, there is an urgent need to design an oxygen flow meter and an oxygen supply system to reduce the energy consumption of the oxygen supply system and facilitate patients to quickly inhale humidified oxygen during the startup phase of the oxygen supply system. Summary of the invention

[0007] The purpose of the present invention is to provide an oxygen flow meter and an oxygen supply system to address the above-mentioned deficiencies of the current oxygen flow meter during use, so as to reduce the energy consumption of the oxygen supply system and facilitate patients to quickly inhale humidified oxygen during the startup phase of the oxygen supply system.

[0008] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0009] An oxygen flow meter comprises a meter body and a humidification bottle, wherein the meter body is provided with a vent pipe, the vent pipe is used to transport oxygen, the bottom of the vent pipe is closed, a plurality of through holes are provided on the side wall of the vent pipe, and the plurality of through holes are distributed along the length direction of the vent pipe;

[0010] The vent pipe is provided with a floating member and a covering member, the floating member and the vent pipe can be slidably matched, the sliding direction of the floating member relative to the vent pipe is in the same direction as the length direction of the vent pipe, one end of the covering member is connected to the outer wall of the vent pipe, and the other end is connected to the floating member, the area on the vent pipe for connecting with the covering member is located at the upper part of the area on the vent pipe where the through hole is provided, and the covering member is cylindrical and is sleeved on the vent pipe;

[0011] The end of the ventilation tube close to the bottom of the humidification bottle is the first end. When the floating element is not acted upon by buoyancy, the floating element is located at the first end of the ventilation tube. When the floating element is acted upon by buoyancy, the floating element can float on the liquid surface.

[0012] The oxygen in the ventilation pipe is discharged from the through hole on the ventilation pipe which is located below the floating member.

[0013] As a preferred technical solution of the present application, the cross-sectional area of ​​the through hole on the ventilation pipe gradually increases in a direction gradually approaching the first end.

[0014] As a preferred technical solution of the present application, the floating member includes a sleeve and a float, the sleeve is sleeved on the outer wall of the ventilation pipe, and the float is located in the middle or upper part of the sleeve.

[0015] As a preferred technical solution of the present application, a rubber layer is provided on the inner wall of the sleeve, the rubber layer is elastic, and the rubber layer is in contact with the outer wall of the ventilation pipe.

[0016] As a preferred technical solution of the present application, the floating member has an initial state. When the floating member is in the initial state, the surface body is placed vertically, the floating member is not affected by buoyancy, and the through holes on the ventilation pipe are all covered by a covering member or a sleeve.

[0017] As a preferred technical solution of the present application, the cover is a membrane structure, and the oxygen in the ventilation pipe can flow to the cover through the through hole, so that the cover is filled, and the filled cover can be made into a columnar structure.

[0018] As a preferred technical solution of the present application, the ventilation pipe includes a movable part, and the covering part is connected to the ventilation pipe through the movable part;

[0019] The vent pipe is provided with a movable groove, the movable member is sleeved on the movable groove, a first elastic member is connected between the movable groove and the movable member, the first elastic member is elastic, one end of the first elastic member is connected to the movable groove, and the other end is connected to the movable member, and the movable member can move relative to the movable groove along the length direction of the movable groove;

[0020] When the floating member is in the initial state and the covering member is in a filled state, after water is poured into the humidification bottle, the filled covering member is acted upon by buoyancy, which can cause the floating member, the covering member and the movable member to move upward relative to the ventilation tube, thereby increasing the deformation of the first elastic member and allowing the floating member to release the obstruction of the through hole on the ventilation tube near the first end.

[0021] As a preferred technical solution of the present application, an air outlet pipe connector is also provided on the meter body, and the air outlet pipe connector is used to discharge the humidified oxygen.

[0022] As a preferred technical solution of the present application, the humidifier bottle is provided with a water filling port, a cover body is detachably provided on the water filling port, and the water filling port is used to add liquid to the humidifier bottle.

[0023] The present invention also provides an oxygen supply system, comprising an oxygen flow meter as described in any of the above items, and also comprising an outlet pipe and an inlet pipe, wherein the outlet pipe and the inlet pipe are connected to the meter body, and the inlet pipe is connected to the ventilation pipe, and the outlet pipe is connected to the humidification bottle.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. In the scheme of the present application, by providing a floating member and a covering member, the floating member can be affected by the buoyancy provided by the liquid in the humidification bottle and can float on the liquid surface, so that the floating member can move relative to the ventilation tube with the change of the liquid surface. Therefore, when the patient is inhaling oxygen, in the early stage of oxygen inhalation, the liquid consumption in the humidification bottle is low, so that the amount of liquid in the humidification bottle is large. At this time, the floating member is located at a position on the ventilation tube away from the first end, and the number of through holes on the ventilation tube located below the floating member is large. The oxygen in the ventilation tube is discharged from the through holes on the ventilation tube located below the floating member. The through holes are vertically distributed on the ventilation tube, so that part of the oxygen discharged from the ventilation tube is discharged to the shallow water area and part is discharged to the deep water area. On the one hand, the discharge area of ​​the oxygen discharged from the through holes of the ventilation tube into the liquid of the humidification bottle is increased, which is more conducive to the discharge of oxygen from the ventilation tube into the liquid of the humidification bottle, and the efficiency of oxygen humidification is improved;

[0026] On the other hand, the cover can block the oxygen, so that the oxygen discharged from the ventilation pipe to the humidification bottle is located below the liquid surface, thereby ensuring that the oxygen can be humidified, further improving the efficiency of oxygen humidification;

[0027] On the other hand, during the startup phase of the oxygen supply system, the oxygen in the ventilation tube can be discharged from the shallow water area in the humidification bottle, which can reduce the path and duration of movement of this part of the oxygen in the flow meter, and facilitate the patient to quickly inhale the humidified oxygen during the startup phase of the oxygen supply system;

[0028] On the other hand, since the oxygen in the ventilation tube can be discharged from the shallow water area in the humidification bottle, the oxygen in the ventilation tube only needs to overcome the pressure of the liquid in the diving area to discharge the oxygen from the through hole into the liquid in the humidification bottle, thereby reducing the difficulty of oxygen entering the humidification bottle through the ventilation tube and reducing the energy consumption of the oxygen supply system.

[0029] Furthermore, when the watch body is placed vertically and the floating member is not subjected to buoyancy, the floating member can move to a position close to the first end under its own weight, so that the through holes on the vent pipe can be covered by the cover or the sleeve, and then after the watch body is separated from the humidification bottle, when the humidification bottle is replenished with liquid, the oxygen in the watch body can be prevented from escaping from the through holes, thereby reducing the waste rate of oxygen;

[0030] 2. Further, the cover is configured as a membrane structure. When the float floats on the liquid surface, the oxygen in the ventilation tube can flow from the through hole located above the float to the cover, so that the cover is gradually filled. The filled cover is located above the liquid surface, so that the filled cover can fill the space above the liquid surface in the humidification bottle. In this way, after the oxygen escapes from the liquid in the humidification bottle, the oxygen flows out of the humidification bottle through the gap between the inner wall of the humidification bottle and the cover. The filled cover can reduce the circulation space of the oxygen escaping from the liquid in the humidification bottle, thereby further reducing the time that the humidified oxygen stays in the humidification bottle, which is more conducive to discharging the humidified oxygen in the humidification bottle.

[0031] 3. Furthermore, by providing a movable part, when the floating part is in the initial state and the covering part is in the filled state, water is injected into the humidification bottle to replenish the liquid in the humidification bottle, and the filled covering part can be affected by the buoyancy, so that the floating part, the covering part and the movable part can move upward relative to the ventilation tube together, and the deformation amount of the first elastic part is increased, and at the same time, the floating part releases the obstruction of the through hole on the ventilation tube near the first end, so that the oxygen in the filled covering part and the oxygen in the ventilation tube can be discharged from the unobstructed through hole into the liquid in the humidification bottle. The humidifier bottle is filled with liquid so that the oxygen is moistened by the liquid. Thus, the oxygen flow meter of the present application can automatically control the discharge of oxygen from the ventilation tube according to the liquid content in the humidification bottle. When the amount of liquid in the humidification bottle is small or the humidification bottle is separated from the meter body, the oxygen can be prevented from flowing out of the meter body. After the liquid is added to the humidification bottle, the through hole can be automatically blocked to allow the oxygen to remain in the liquid in the humidification bottle from the meter body, thereby ensuring that the oxygen discharged from the ventilation tube to the external environment can be moistened by the liquid in the humidification bottle, thereby further improving the efficiency of oxygen humidification. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the structure when the amount of liquid in the humidification bottle is large in one embodiment of an oxygen flow meter of the present application;

[0033] Figure 2 This is a schematic structural diagram of an oxygen flow meter in one embodiment of the present application when the amount of liquid in the humidification bottle is small;

[0034] Figure 3 This is a schematic structural diagram of a floating component in one embodiment of an oxygen flow meter of the present application;

[0035] Figure 4 This is a structural schematic diagram of a movable part in one embodiment of an oxygen flow meter of the present application;

[0036] Figure 5 This is a schematic diagram of the structure of the water replenishment port in one embodiment of an oxygen flow meter of the present application;

[0037] Figure 6 This is a schematic structural diagram of one implementation of an oxygen supply system of the present application;

[0038] Markings in the figure: 1- meter body, 2- humidification bottle, 3- ventilation pipe, 4- through hole, 5- floating part, 6- covering part, 7- first end, 8- sleeve, 9- float ball, 10- rubber layer, 11- movable part, 12- movable groove, 13- first elastic part, 14- outlet pipe connector, 15- water supply port, 16- cover body, 17- outlet pipe, 18- inlet pipe. DETAILED DESCRIPTION

[0039] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0040] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents some embodiments of the present invention. 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.

[0041] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0043] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0044] Embodiment 1: This embodiment provides an oxygen flow meter, see Figure 1-Figure 3 As shown, it includes a watch body 1 and a humidification bottle 2, the watch body 1 is provided with a ventilation pipe 3, the ventilation pipe 3 is used to transport oxygen, the bottom of the ventilation pipe 3 is closed, and the side wall of the ventilation pipe 3 is provided with a plurality of through holes 4, and the plurality of through holes 4 are distributed along the length direction of the ventilation pipe 3;

[0045] The vent pipe 3 is provided with a floating member 5 and a covering member 6, the floating member 5 and the vent pipe 3 can be slidably matched, the sliding direction of the floating member 5 relative to the vent pipe 3 is in the same direction as the length direction of the vent pipe 3, one end of the covering member 6 is connected to the outer wall of the vent pipe 3, and the other end is connected to the floating member 5, the area on the vent pipe 3 for connecting with the covering member 6 is located at the upper part of the area on the vent pipe 3 where the through hole 4 is provided, and the covering member 6 is cylindrical and is sleeved on the vent pipe 3;

[0046] The end of the ventilation tube 3 close to the bottom of the humidification bottle 2 is the first end 7. When the floating member 5 is not acted upon by buoyancy, the floating member 5 is located at the first end 7 of the ventilation tube 3. When the floating member 5 is acted upon by buoyancy, the floating member 5 can float on the liquid surface.

[0047] The oxygen in the ventilation pipe 3 is discharged from the through hole 4 on the ventilation pipe 3 and located below the floating member 5 .

[0048] In the present application, by providing the floating member 5 and the covering member 6, the floating member 5 can be affected by the buoyancy provided by the liquid in the humidification bottle 2, and can float on the liquid surface, so that the floating member 5 can move relative to the ventilation tube 3 with the change of the liquid surface, so that when the patient is inhaling oxygen, in the early stage of oxygen inhalation, the liquid consumption in the humidification bottle 2 is low, so that the amount of liquid in the humidification bottle 2 is large. At this time, the floating member 5 is located at a position on the ventilation tube 3 away from the first end 7, and the number of through holes 4 on the ventilation tube 3 located below the floating member 5 is large. The oxygen in the ventilation tube 3 is discharged from the through holes 4 on the ventilation tube 3 located below the floating member 5. The through holes 4 are vertically distributed on the ventilation tube 3, so that part of the oxygen discharged from the ventilation tube 3 is discharged to the shallow water area, and part of it is discharged to the deep water area. On the one hand, the discharge area of ​​oxygen discharged from the through holes 4 of the ventilation tube 3 to the liquid in the humidification bottle 2 is increased, which is more conducive to the discharge of oxygen from the ventilation tube 3 to the liquid in the humidification bottle 2, and the efficiency of oxygen humidification is improved;

[0049] On the other hand, the cover 6 can block the oxygen, so that the oxygen discharged from the ventilation tube 3 to the humidification bottle 2 is located below the liquid surface, thereby ensuring that the oxygen can be humidified, further improving the efficiency of oxygen humidification;

[0050] On the other hand, during the startup phase of the oxygen supply system, the oxygen in the ventilation tube 3 can be discharged from the shallow water area in the humidification bottle 2, which can reduce the path and duration of movement of this part of the oxygen in the flow meter, and facilitate the patient to quickly inhale the humidified oxygen during the startup phase of the oxygen supply system;

[0051] On the other hand, since the oxygen in the ventilation tube 3 can be discharged from the shallow water area in the humidification bottle 2, the oxygen in the ventilation tube 3 only needs to overcome the pressure of the liquid in the diving area to discharge the oxygen from the through hole 4 to the liquid in the humidification bottle 2, thereby reducing the difficulty of oxygen entering the humidification bottle 2 through the ventilation tube 3 and reducing the energy consumption of the oxygen supply system.

[0052] As a preferred embodiment, on the basis of the above-mentioned manner, further, in the direction gradually approaching the first end 7, the cross-sectional area of ​​the through hole 4 on the vent pipe 3 gradually increases.

[0053] Furthermore, the cross-sectional area of ​​the through hole 4 on the ventilation tube 3 is gradually increased in the direction gradually approaching the first end 7 , which is more conducive to the oxygen in the ventilation tube 3 being discharged from the through hole 4 located in the deep water area into the liquid in the humidification bottle 2 .

[0054] As a preferred embodiment, based on the above-mentioned manner, further, the floating member 5 includes a sleeve 8 and a float 9, the sleeve 8 is sleeved on the outer wall of the ventilation pipe 3, and the float 9 is located in the middle or upper part of the sleeve 8.

[0055] Furthermore, by arranging the sleeve 8 and the float 9, and arranging the float 9 in the middle or upper part of the sleeve 8, when the float 9 is acted upon by the buoyancy of the liquid in the humidification bottle 2, the float 9 floats on the liquid surface, and the bottom of the sleeve 8 extends into the liquid, thereby ensuring that the through holes 4 on the ventilation tube 3 located below the sleeve 8 are all located below the liquid surface. As the liquid level of the humidification bottle 2 continues to drop, the situation in which unhumidified oxygen is discharged from the oxygen flow meter is further avoided, thereby ensuring that the patient can continue to inhale humidified oxygen.

[0056] As a preferred embodiment, based on the above-mentioned manner, further, a rubber layer 10 is provided on the inner wall of the sleeve 8 , and the rubber layer 10 is elastic and fits with the outer wall of the ventilation pipe 3 .

[0057] Furthermore, a rubber layer 10 is provided on the inner wall of the sleeve 8 , and the rubber layer 10 fits with the outer wall of the ventilation pipe 3 , which can prevent oxygen from escaping from between the rubber layer 10 and the ventilation pipe 3 , and facilitate the oxygen in the ventilation pipe 3 to be discharged from the through hole 4 below the sleeve 8 .

[0058] Embodiment 2: Based on the technical solution of embodiment 1, further, see Figure 1-Figure 3 As shown, the floating member 5 has an initial state. When the floating member 5 is in the initial state, the watch body 1 is placed vertically, the floating member 5 is not affected by buoyancy, and the through holes 4 on the ventilation pipe 3 are all covered by the covering member 6 or the sleeve 8.

[0059] Furthermore, when the watch body 1 is placed vertically and the floating member 5 is not affected by buoyancy, the floating member 5 can move to a position close to the first end 7 under the action of its own gravity, so that the through holes 4 on the ventilation tube 3 can be covered by the covering member 6 or the sleeve 8. After the watch body 1 is separated from the humidification bottle 2, when the humidification bottle 2 is replenished with liquid, the oxygen in the watch body 1 can be prevented from escaping from the through holes 4, thereby reducing the waste rate of oxygen.

[0060] As a preferred embodiment, based on the above method, further, the cover 6 is a membrane structure, and the oxygen in the ventilation pipe 3 can flow to the cover 6 through the through hole 4, so that the cover 6 is filled, and the filled cover 6 can be made into a columnar structure.

[0061] Furthermore, the cover 6 is configured as a membrane structure. When the float 5 floats on the liquid surface, the oxygen in the ventilation tube 3 can flow from the through hole 4 located above the float 5 to the cover 6, so that the cover 6 is gradually filled. The filled cover 6 is located above the liquid surface, so that the filled cover 6 can fill the space above the liquid surface in the humidification bottle 2. In this way, after the oxygen escapes from the liquid in the humidification bottle 2, the oxygen flows out of the humidification bottle 2 through the gap between the inner wall of the humidification bottle 2 and the cover 6. The filled cover 6 can reduce the circulation space of the oxygen escaping from the liquid in the humidification bottle 2, thereby further reducing the time that the humidified oxygen stays in the humidification bottle 2, which is more conducive to discharging the humidified oxygen in the humidification bottle 2.

[0062] Embodiment 3: Based on the technical solution of Embodiment 2, further, see Figure 1-Figure 5 As shown, the vent pipe 3 includes a movable part 11, and the cover 6 is connected to the vent pipe 3 via the movable part 11;

[0063] The vent pipe 3 is provided with a movable groove 12, the movable member 11 is sleeved on the movable groove 12, and a first elastic member 13 is connected between the movable groove 12 and the movable member 11. The first elastic member 13 is elastic, one end of the first elastic member 13 is connected to the movable groove 12, and the other end is connected to the movable member 11. The movable member 11 can move relative to the movable groove 12 along the length direction of the movable groove 12;

[0064] When the floating member 5 is in the initial state and the covering member 6 is in a filled state, after water is injected into the humidification bottle 2, the filled covering member 6 is subjected to the buoyancy, which can make the floating member 5, the covering member 6 and the movable member 11 move upward relative to the ventilation tube 3, increase the deformation of the first elastic member 13, and enable the floating member 5 to release the obstruction of the through hole 4 on the ventilation tube 3 near the first end 7.

[0065] Furthermore, by providing the movable member 11, when the floating member 5 is in the initial state and the covering member 6 is in the filled state, after the humidification bottle 2 is filled with water to replenish the liquid in the humidification bottle 2, the filled covering member 6 can be affected by the buoyancy, so that the floating member 5, the covering member 6 and the movable member 11 can move upward relative to the ventilation tube 3 together, and the deformation amount of the first elastic member 13 is increased, and at the same time, the floating member 5 releases the obstruction of the through hole 4 on the ventilation tube 3 near the first end 7, so that the oxygen in the filled covering member 6 and the oxygen in the ventilation tube 3 can be discharged from the unobstructed through hole 4 to the humidification bottle 2. The liquid in the humidification bottle 2 is used to moisten the oxygen with the liquid. Thus, the oxygen flow meter of the present application can automatically control the discharge of oxygen from the ventilation pipe 3 according to the liquid content in the humidification bottle 2. When the amount of liquid in the humidification bottle 2 is small or the humidification bottle 2 is separated from the meter body 1, the oxygen can be prevented from flowing out of the meter body 1. After the liquid is added to the humidification bottle 2, the shielding of the through hole 4 can be automatically released, so that the oxygen is retained from the meter body 1 in the liquid in the humidification bottle 2, so as to ensure that the oxygen discharged from the ventilation pipe 3 to the external environment can be moistened by the liquid in the humidification bottle 2, thereby further improving the efficiency of oxygen moistening.

[0066] After the through hole 4 is unblocked, the first elastic member 13 gradually recovers its deformation so as to reset the position of the movable member 11 relative to the movable groove 12 .

[0067] As a preferred embodiment, on the basis of the above-mentioned embodiment, further, an air outlet pipe connector 14 is provided on the meter body 1, and the air outlet pipe connector 14 is used to discharge the humidified oxygen.

[0068] Furthermore, by providing the air outlet pipe connector 14, it is convenient to discharge the humidified oxygen in the humidification bottle 2 so that the patient can inhale it.

[0069] As a preferred embodiment, based on the above-mentioned manner, further, the humidification bottle 2 is provided with a water replenishing port 15 , and the water replenishing port 15 is detachably provided with a cover body 16 , and the water replenishing port 15 is used to replenish liquid into the humidification bottle 2 .

[0070] Furthermore, by providing the water replenishment port 15 , the convenience of replenishing the liquid in the humidification bottle 2 can be further improved.

[0071] Embodiment 4: This embodiment provides an oxygen supply system, see Figure 6 As shown, it includes an oxygen flow meter as described in any of the above items, and also includes an outlet pipe 17 and an inlet pipe 18, the outlet pipe 17 and the inlet pipe 18 are connected to the meter body 1, and the inlet pipe 18 is connected to the ventilation pipe 3, and the outlet pipe 17 is connected to the humidification bottle 2.

[0072] In the present application, the air outlet pipe 17 and the air inlet pipe 18 are connected to the meter body 1, and oxygen is discharged in sequence through the air inlet pipe 18, the ventilation pipe 3, the through hole 4, the humidification bottle 2 and the air outlet pipe 17, so that the patient inhales the humidified oxygen discharged from the air outlet pipe 17.

[0073] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. An oxygen flow meter, characterized in that: It comprises a meter body and a humidification bottle, wherein the meter body is provided with a ventilation pipe, the ventilation pipe is used to transport oxygen, the bottom of the ventilation pipe is closed, and a plurality of through holes are provided on the side wall of the ventilation pipe, and the plurality of through holes are distributed along the length direction of the ventilation pipe; The vent pipe is provided with a floating member and a covering member, the floating member and the vent pipe can be slidably matched, the sliding direction of the floating member relative to the vent pipe is in the same direction as the length direction of the vent pipe, one end of the covering member is connected to the outer wall of the vent pipe, and the other end is connected to the floating member, the area on the vent pipe for connecting with the covering member is located at the upper part of the area on the vent pipe where the through hole is provided, and the covering member is cylindrical and is sleeved on the vent pipe; The end of the ventilation tube close to the bottom of the humidification bottle is the first end. When the floating element is not acted upon by buoyancy, the floating element is located at the first end of the ventilation tube. When the floating element is acted upon by buoyancy, the floating element can float on the liquid surface. The oxygen in the vent pipe is discharged from the through hole on the vent pipe located below the floating member; In a direction gradually approaching the first end, the cross-sectional area of ​​the through hole on the vent pipe gradually increases; The floating member includes a sleeve and a floating ball, wherein the sleeve is sleeved on the outer wall of the ventilating pipe, and the floating ball is located in the middle or upper part of the sleeve; A rubber layer is provided on the inner wall of the sleeve, the rubber layer is elastic, and the rubber layer is in contact with the outer wall of the ventilating pipe; The floating member has an initial state. When the floating member is in the initial state, the meter body is placed vertically, the floating member is not affected by buoyancy, and the through holes on the vent are all covered by the covering member or the sleeve; The cover is a membrane structure, and the oxygen in the ventilation pipe can flow to the cover through the through hole, so that the cover is filled, and the filled cover can be a columnar structure.

2. An oxygen flow meter as claimed in claim 1, characterized in that: The vent pipe includes a movable part, and the cover is connected to the vent pipe through the movable part; The vent pipe is provided with a movable groove, the movable member is sleeved on the movable groove, a first elastic member is connected between the movable groove and the movable member, the first elastic member is elastic, one end of the first elastic member is connected to the movable groove, and the other end is connected to the movable member, and the movable member can move relative to the movable groove along the length direction of the movable groove; When the floating member is in the initial state and the covering member is in a filled state, after water is poured into the humidification bottle, the filled covering member is acted upon by buoyancy, which can cause the floating member, the covering member and the movable member to move upward relative to the ventilation tube, thereby increasing the deformation of the first elastic member and allowing the floating member to release the obstruction of the through hole on the ventilation tube near the first end.

3. An oxygen flow meter as claimed in claim 2, characterized in that: The meter body is also provided with an air outlet pipe connector, which is used to discharge humidified oxygen.

4. An oxygen flow meter as claimed in claim 3, characterized in that: The humidification bottle is provided with a water replenishing port, on which a cover body is detachably provided, and the water replenishing port is used to replenish liquid into the humidification bottle.

5. An oxygen supply system, characterized in that: The oxygen flow meter comprises the oxygen flow meter according to any one of claims 1 to 4, and further comprises an air outlet pipe and an air inlet pipe, wherein the air outlet pipe and the air inlet pipe are connected to the meter body, the air inlet pipe is connected to the ventilation pipe, and the air outlet pipe is connected to the humidification bottle.

Images