Intelligent contrast agent filling device

Abstract

The utility model provides an intelligent contrast agent filling device. The intelligent contrast agent filling device comprises a medicine bottle, a first bottle penetrating device and a second bottle penetrating device. The medicine bottle is used for storing liquid medicine; the first bottle penetrating device is arranged at the top of the medicine bottle and used for being connected with an external infusion hose and conveying liquid medicine into the medicine bottle; the second bottle penetrating device is arranged at the bottom of the medicine bottle and used for being connected with an external infusion hose and conveying liquid medicine into the liquid medicine injection machine; wherein the first bottle penetrating device and the second bottle penetrating device can be communicated with outside air so as to balance the air pressure in the medicine bottle. When the air pressure in the medicine bottle is too low, external air pressure can enter the top medicine bottle through the first bottle penetrating device so as to enter the medicine bottle, and therefore when the air pressure in the medicine bottle is too low, the medicine bottle and the external air pressure can be kept balanced; when the air pressure in the medicine bottle is too high, the air pressure in the medicine bottle can escape to the outside through the first bottle penetrating device, and therefore the medicine bottle and the outside air pressure can be kept balanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and more specifically, it relates to a contrast agent intelligent filling device. Background Art

[0002] The contrast agent intelligent filling device includes a medicine bottle, a bottle piercer, a perfusion machine and a syringe. The top and bottom of the medicine bottle are respectively connected to the perfusion machine and the syringe. The perfusion machine is used to transport the liquid medicine into the medicine bottle, and the bottle piercer can keep the air pressure in the medicine bottle consistent, so that the liquid medicine in the medicine bottle can be injected into the patient's body through the syringe.

[0003] However, currently on the market, the medicine bottle is usually connected to the perfusion machine and the syringe at the top and bottom of the bottle piercer. However, when transporting the liquid medicine, since the bottle piercer cannot balance the air pressure in the medicine bottle, it often causes the liquid medicine to not be normally infused or injected. Summary of the Utility Model

[0004] The purpose of the embodiment of the utility model is to provide a contrast agent intelligent filling device to solve the technical problem that the contrast agent intelligent filling device in the prior art cannot balance the air pressure in the medicine bottle.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a contrast agent intelligent filling device, including:

[0006] A medicine bottle for storing the liquid medicine;

[0007] A first bottle piercer disposed on the top of the medicine bottle for connecting an external infusion hose to transport the liquid medicine into the medicine bottle;

[0008] A second bottle piercer disposed on the bottom of the medicine bottle for connecting an external infusion hose to transport the liquid medicine into the liquid medicine injection machine;

[0009] Wherein, the first bottle piercer and the second bottle piercer can be connected to the external air to balance the air pressure in the medicine bottle.

[0010] Optionally, the first bottle piercer includes a first connector and a first air inlet member. The first connector and the first air inlet member are connected to each other, and the first air inlet member is disposed on the side of the first connector;

[0011] The first connector is disposed on the top of the medicine bottle and is used for connecting an external infusion hose to transport the liquid medicine into the medicine bottle;

[0012] The first air inlet member is connected to the external air.

[0013] Optionally, a first liquid inlet channel is formed by hollowing out the middle of the first connecting piece, and the first liquid inlet channel is connected to the top of the medicine bottle.

[0014] Optionally, a first air inlet channel is formed by hollowing out the middle of the first connecting piece, and a first air cavity is formed in the first air inlet piece;

[0015] The first air inlet channel communicates with the first air cavity;

[0016] The first air cavity communicates with the outside air.

[0017] Optionally, a first fixing cover is arranged in the first air cavity, and the outside air communicates with the first air cavity through the first fixing cover.

[0018] Optionally, the second bottle piercer includes a second connecting piece and a second air inlet piece, the second connecting piece and the second air inlet piece are connected to each other, and the second air inlet piece is arranged on the side of the second connecting piece;

[0019] The second connecting piece is arranged at the bottom of the medicine bottle and is used for connecting an external infusion hose. The second connecting piece is used for connecting an external infusion hose to convey the liquid medicine into the liquid medicine injector;

[0020] The second air inlet piece communicates with the outside air.

[0021] Optionally, a second liquid inlet channel is formed by hollowing out the middle of the second connecting piece, and the second liquid inlet channel is connected to the bottom of the medicine bottle.

[0022] Optionally, a second air inlet channel is formed by hollowing out the middle of the second connecting piece, and a second air cavity is formed in the second air inlet piece;

[0023] The second air inlet channel communicates with the second air cavity;

[0024] The second air cavity communicates with the outside air.

[0025] Optionally, a second fixing cover is arranged in the first air cavity, and the outside air communicates with the second air cavity through the second fixing cover.

[0026] Optionally, a silica gel cover is arranged in the second air cavity, and a protrusion is arranged in the second air cavity.

[0027] A ventilation hole is formed in the silica gel cover, and the protrusion is received in the ventilation hole;

[0028] Wherein, when the outside air pressure is greater than the air pressure inside the medicine bottle, the outside air enters the second air cavity through the second fixing cover and pushes the silica gel cover open so that the ventilation hole is separated from the protrusion;

[0029] When the external air pressure is less than the air pressure inside the medicine bottle, the air inside the medicine bottle enters the second air chamber through the second air inlet channel and presses against the silica gel cover so that the ventilation hole is connected to the protrusion.

[0030] The beneficial effects of the intelligent contrast agent filling device provided by the present utility model are as follows: Compared with the prior art, in the intelligent contrast agent filling device of the present utility model, it includes a medicine bottle, a first bottle piercer and a second bottle piercer. The medicine bottle is used for storing liquid medicine; the first bottle piercer is arranged at the top of the medicine bottle and is used for connecting an external infusion hose to convey the liquid medicine into the medicine bottle; the second bottle piercer is arranged at the bottom of the medicine bottle and is used for connecting an external infusion hose to convey the liquid medicine into the liquid medicine injector; wherein, the first bottle piercer and the second bottle piercer can be connected to the external air to balance the air pressure inside the medicine bottle. When the air pressure inside the medicine bottle is too low, the external air pressure can enter the top medicine bottle through the first bottle piercer and thus enter the medicine bottle, so that when the air pressure in the medicine bottle is too low, the air pressure in the medicine bottle and the external air pressure can be kept balanced; when the air pressure inside the medicine bottle is too high, the air pressure inside the medicine bottle can escape to the outside through the first bottle piercer, so that the air pressure in the medicine bottle and the external air pressure can be kept balanced. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic diagram of the overall structure of the intelligent contrast agent filling device provided by the embodiment of the present utility model;

[0033] Figure 2 It is a sectional view of the first bottle piercer of the intelligent contrast agent filling device provided by the embodiment of the present utility model;

[0034] Figure 3 It is a schematic diagram of the overall structure of the first bottle piercer of the intelligent contrast agent filling device provided by the embodiment of the present utility model;

[0035] Figure 4 It is a sectional view of the second bottle piercer of the intelligent contrast agent filling device provided by the embodiment of the present utility model;

[0036] Figure 5 It is a schematic diagram of the overall structure of the second bottle piercer of the intelligent contrast agent filling device provided by the embodiment of the present utility model;

[0037] Figure 6This is a schematic diagram of the overall structure of the medicine bottle of the contrast agent intelligent filling device provided by the embodiment of the present utility model.

[0038] Among them, each reference numeral in the figure:

[0039] 100, contrast agent intelligent filling device; 10, medicine bottle; 20, first bottle piercer; 21, first connecting piece; 22, first air inlet piece; 211, first liquid inlet channel; 212, first air inlet channel; 221, first air inlet channel; 222, first air cavity; 223, first fixing cover; 30, second bottle piercer; 31, second connecting piece; 32, second air inlet piece; 311, second liquid inlet channel; 312, second air inlet channel; 321, second air inlet channel; 322, second air cavity; 323, second fixing cover; 324, silica gel cover; 325. protrusion. Specific embodiments

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0041] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0042] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0043] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0044] Now, the contrast agent intelligent filling device 100 provided by the embodiment of the present utility model will be described.

[0045] Please refer to Figures 1 to 6 , Figure 1 , which is the overall structural schematic diagram of the contrast agent intelligent filling device provided by the embodiment of the present utility model; Figure 2 , which is the sectional view of the first bottle-piercing device of the contrast agent intelligent filling device provided by the embodiment of the present utility model; Figure 3 , which is the overall structural schematic diagram of the first bottle-piercing device of the contrast agent intelligent filling device provided by the embodiment of the present utility model; Figure 4 , which is the sectional view of the second bottle-piercing device of the contrast agent intelligent filling device provided by the embodiment of the present utility model; Figure 5 , which is the overall structural schematic diagram of the second bottle-piercing device of the contrast agent intelligent filling device provided by the embodiment of the present utility model; Figure 6 , which is the overall structural schematic diagram of the medicine bottle of the contrast agent intelligent filling device provided by the embodiment of the present utility model. The contrast agent intelligent filling device 100 includes a medicine bottle, a first bottle-piercing device, and a second bottle-piercing device. The medicine bottle is used for storing liquid medicine; the first bottle-piercing device is arranged at the top of the medicine bottle, and the first bottle-piercing device is used for connecting an external infusion hose to convey the liquid medicine into the medicine bottle; the second bottle-piercing device is arranged at the bottom of the medicine bottle, and the second bottle-piercing device is used for connecting an external infusion hose to convey the liquid medicine into the liquid medicine injector; wherein, the first bottle-piercing device and the second bottle-piercing device can be connected to the external air to balance the air pressure in the medicine bottle.

[0046] In this embodiment, since the liquid medicine will be gradually injected into the medicine bottle during the filling process, a negative pressure will be formed inside the medicine bottle. If the air pressure in the medicine bottle is not balanced, it will cause the liquid medicine to flow out smoothly or unevenly. By connecting the first bottle-piercing device and the second bottle-piercing device to the external air, the air pressure difference inside and outside the medicine bottle can be balanced to ensure the smooth flow of the liquid medicine. Specifically, when the air pressure in the medicine bottle is too low, the external air pressure can enter the top medicine bottle through the first bottle-piercing device and then enter the medicine bottle, so that when the air pressure in the medicine bottle is too low, the air pressure in the medicine bottle and the external air pressure can be kept balanced; when the air pressure in the medicine bottle is too high, the air pressure in the medicine bottle can escape to the outside through the first bottle-piercing device, so that the air pressure in the medicine bottle and the external air pressure can be kept balanced.

[0047] In addition, during the liquid medicine filling process, if a negative pressure is formed inside the medicine bottle, it will cause air to flow backward into the medicine bottle, resulting in the generation of bubbles. Bubbles will affect the imaging effect during the use of the contrast agent. By balancing the air pressure in the medicine bottle, the generation of bubbles can be avoided, and the quality of the filled liquid medicine can be guaranteed.

[0048] In some embodiments, the first bottle-piercing device includes a first connecting piece and a first air inlet piece. The first connecting piece and the first air inlet piece are connected to each other, and the first air inlet piece is arranged on the side of the first connecting piece; the first connecting piece is arranged at the top of the medicine bottle, and the first connecting piece is used for connecting an external infusion hose to convey the liquid medicine into the medicine bottle; the first air inlet piece is connected to the external air.

[0049] In this embodiment, the first bottle-piercing device includes a first connecting member and a first air inlet member, and they are connected to each other. The first air inlet member is arranged on the side of the first connecting member. At the same time, the first connecting member is arranged on the top of the medicine bottle and can be used to connect the external infusion hose to transport the liquid medicine into the medicine bottle. The first air inlet member is connected to the external air to balance the air pressure difference inside and outside the medicine bottle. Through such an arrangement, the smooth filling and flow of the liquid medicine can be ensured, and the generation of bubbles can be avoided.

[0050] In some embodiments, the middle part of the first connecting member is hollowed out to form a first liquid inlet channel, and the first liquid inlet channel is connected to the top of the medicine bottle. Through the first liquid inlet channel, the liquid medicine can directly enter from the top of the medicine bottle. This design can ensure that the position where the liquid medicine enters the medicine bottle is higher, reducing the possibility of air being brought into the medicine bottle, thereby reducing the generation of bubbles. The smooth entry of the liquid medicine helps to ensure the filling accuracy and quality of the liquid medicine. During the process of the liquid medicine entering the top, less foam is generated. Foam will interfere with the filling of the liquid medicine and affect the accurate measurement of the liquid medicine. By connecting the first liquid inlet channel to the top of the medicine bottle, the agitation and bubble generation during the entry of the liquid medicine are reduced, which helps to reduce the generation of foam.

[0051] In some embodiments, the middle part of the first connecting member is hollowed out to form a first air inlet channel, and the first air inlet member is provided with a first air cavity; the first air inlet channel is connected to the first air cavity; the first air cavity is connected to the external air. The first air cavity is connected to the external air and is connected to the top of the medicine bottle through the first air inlet channel, which can balance the air pressure difference inside and outside the medicine bottle. During the filling process of the liquid medicine, when the liquid medicine enters the medicine bottle, internal negative pressure will be generated. Through the design of the first air inlet channel and the first air cavity, the external air can enter the first air cavity and enter the medicine bottle through the air inlet channel to balance the internal and external air pressures and ensure the smooth flow of the liquid medicine. When negative pressure is generated inside the medicine bottle, if there is no appropriate air pressure balance, it may cause the liquid medicine to splash and overflow. Through the design of the first air inlet channel and the first air cavity, the air pressure difference inside and outside the medicine bottle can be balanced, reducing the probability of the liquid medicine splashing and overflowing, and ensuring the safety and reliability of the filling process of the liquid medicine. In summary, the first air inlet channel formed by hollowing out the middle part of the first connecting member is connected to the first air cavity, and the first air cavity is connected to the external air, which can balance the air pressure inside and outside the medicine bottle, avoid the liquid medicine splashing and overflowing, and ensure the smooth progress of the filling process of the liquid medicine.

[0052] In some embodiments, a first fixed cover is provided in the first air chamber, and external air is communicated with the first air chamber through the first fixed cover. By providing the first fixed cover, it is possible to effectively prevent impurities, microorganisms, dust, etc. in the outside world from entering the first air chamber. This can ensure the cleanliness and sterility of the internal environment of the medicine bottle, and guarantee the quality and safety of the liquid medicine. The external air is communicated with the first air chamber through the first fixed cover, which can maintain the air pressure balance inside and outside the medicine bottle. The first fixed cover can be conveniently disassembled and cleaned to ensure the hygiene and sterility of the first air chamber. This can reduce the risk of cross-contamination and facilitate the maintenance and servicing of the device. In summary, through the design of the first fixed cover and the first air chamber, external contamination can be prevented, the air pressure balance can be maintained, and maintenance and cleaning can be facilitated, guaranteeing the normal operation of the liquid medicine filling device and the quality and safety of the liquid medicine.

[0053] In some embodiments, the second bottle piercer includes a second connecting member and a second air inlet member. The second connecting member and the second air inlet member are connected to each other, and the second air inlet member is disposed on the side of the second connecting member; the second connecting member is disposed at the bottom of the medicine bottle and is used for connecting an external infusion hose. The second connecting member is used for connecting an external infusion hose to convey the liquid medicine into the liquid medicine injector.

[0054] The second air inlet member is communicated with the external air. By connecting the external infusion hose through the second connecting member, the liquid medicine can be smoothly conveyed into the liquid medicine injector. Such a setting ensures the smooth conveyance and injection of the liquid medicine, and guarantees the effectiveness and reliability of drug treatment. The second air inlet member is communicated with the external air, which can balance the air pressure difference inside and outside the medicine bottle. During the conveyance of the liquid medicine, if there is no proper air pressure balance, bubbles may be generated. Through the design of the second air inlet member, the generation of bubbles can be reduced, and the quality and accuracy of the liquid medicine can be guaranteed. The second connecting member is disposed at the bottom of the medicine bottle and is used for connecting an external infusion hose. Such a design can conveniently connect the infusion hose to the medicine bottle, making the conveyance of the liquid medicine more convenient and efficient. Since the second connecting member and the second air inlet member are connected to each other, they can be conveniently disassembled and cleaned. This can reduce the risk of cross-contamination and facilitate the maintenance and servicing of the device. In summary, through the design of the second connecting member and the second air inlet member, the smooth conveyance of the liquid medicine can be achieved, the generation of bubbles can be reduced, the connection of the infusion hose can be facilitated, and the device can be conveniently maintained and cleaned. Such a design helps to guarantee the reliability and safety of the liquid medicine conveyance.

[0055] In some embodiments, the middle part of the second connecting piece is hollowed out to form a second liquid inlet channel, and the second liquid inlet channel is connected to the bottom of the medicine bottle. Through the second liquid inlet channel, the liquid medicine can directly enter from the bottom of the medicine bottle. This setting can ensure that the position where the liquid medicine enters the medicine bottle is lower, reducing the possibility of air being brought into the medicine bottle, thereby reducing the generation of bubbles. The smooth entry of the liquid medicine helps to ensure the filling accuracy and quality of the liquid medicine. By connecting the liquid inlet channel to the bottom of the medicine bottle, it can be ensured that the liquid medicine can be fully utilized and waste is reduced. The bottom of the medicine bottle is the lowest point for storing the liquid medicine. Through such a setting, it can be ensured that the liquid medicine can flow out sufficiently and be utilized to the maximum extent. The connection between the bottom of the medicine bottle and the liquid inlet channel enables the liquid medicine to be injected or flowed out more completely. This can reduce the residue of the liquid medicine in the medicine bottle and ensure the accurate measurement and dripping of the liquid medicine. In summary, the second liquid inlet channel formed by hollowing out the middle part of the second connecting piece is connected to the bottom of the medicine bottle, which can ensure the smooth entry of the liquid medicine, maximize the utilization of the liquid medicine, and reduce the residue of the liquid medicine in the medicine bottle. Such a design helps to ensure the filling accuracy and quality of the liquid medicine and improve the utilization rate of the liquid medicine.

[0056] In some embodiments, the middle part of the second connecting piece is hollowed out to form a second air inlet channel, and the second air inlet piece is provided with a second air cavity; the second air inlet channel is communicated with the second air cavity; the second air cavity is communicated with the outside air. When the air pressure in the medicine bottle is too low, the outside air can enter the second air inlet channel through the second air cavity. At this time, the air pressure in the medicine bottle can rise, so as to reach the same as the outside air pressure. Through such a setting, the second air inlet channel and the second air cavity are communicated, so that the outside air is communicated with the air in the medicine bottle to achieve the effect of balancing the air pressure.

[0057] In some embodiments, a second fixed cover is arranged in the first air cavity described above, and the outside air is communicated with the second air cavity through the second fixed cover. By arranging the second fixed cover in the second air cavity and communicating with the outside air through this fixed cover, it can provide the supply of outside air, achieve air pressure balance, and better control the gas source. However, it should be noted to ensure the purity and sterility of the outside air to meet the specific requirements of the device.

[0058] In some embodiments, a silica gel cover is provided in the second air chamber, and a protrusion is provided in the second air chamber. The silica gel cover is provided with a ventilation hole, and the protrusion is received in the ventilation hole. When the external air pressure is greater than the air pressure inside the medicine bottle, the external air enters the second air chamber through the second fixed cover and pushes the silica gel cover open so that the ventilation hole is separated from the protrusion. When the external air pressure is less than the air pressure inside the medicine bottle, the air inside the medicine bottle enters the second air chamber through the second air inlet channel and presses against the silica gel cover so that the ventilation hole is connected to the protrusion. Through the design of the silica gel cover and the protrusion, the balance of the air pressure inside the medicine bottle and the outside can be achieved. When the external air pressure is greater than the air pressure inside the medicine bottle, the external air enters the second air chamber to ensure air pressure balance. When the external air pressure is less than the air pressure inside the medicine bottle, the air inside the medicine bottle enters the second air chamber, and the air pressure balance can also be achieved. This helps to maintain the stability of the gas pressure inside the device and avoid the adverse effects on the device and the medicine bottle caused by the air pressure difference.

[0059] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An intelligent contrast agent filling device, characterized in that: include: A medicine bottle, wherein the medicine bottle is used to store liquid medicine; A first bottle piercer, which is disposed on the top of the medicine bottle and is used to connect an external infusion hose to deliver the medicine solution into the medicine bottle; A second bottle piercer, the second bottle piercer is arranged at the bottom of the medicine bottle, and the second bottle piercer is used to connect an external infusion hose to transport the medicine liquid into the medicine liquid injection machine; Wherein, the first bottle piercer and the second bottle piercer can be connected to the outside air to balance the air pressure in the medicine bottle.

2. The contrast agent intelligent filling device according to claim 1, characterized in that: The first bottle piercer comprises a first connecting member and a first air inlet member, the first connecting member and the first air inlet member are connected to each other, and the first air inlet member is arranged on a side of the first connecting member; The first connecting member is disposed on the top of the medicine bottle, and is used to connect an external infusion hose to deliver the medicine solution into the medicine bottle; The first air inlet is in communication with the outside air.

3. The contrast agent intelligent filling device according to claim 2, characterized in that: The middle portion of the first connecting member is hollowed out to form a first liquid inlet channel, and the first liquid inlet channel is connected to the top of the medicine bottle.

4. The contrast agent intelligent filling device as claimed in claim 3, characterized in that: The first connecting member is hollowed out in the middle to form a first air inlet channel, and the first air inlet member is provided with a first air cavity; The first air inlet channel is in communication with the first air cavity; The first air cavity is communicated with the outside air.

5. The contrast agent intelligent filling device according to claim 4, characterized in that: A first fixed cover is arranged in the first air cavity, and the outside air is connected with the first air cavity through the first fixed cover.

6. The contrast agent intelligent filling device according to claim 1, characterized in that: The second bottle piercer comprises a second connecting member and a second air inlet member, the second connecting member and the second air inlet member are connected to each other, and the second air inlet member is arranged on the side of the second connecting member; The second connecting piece is arranged at the bottom of the medicine bottle and is used to connect an external infusion hose. The second connecting piece is used to connect an external infusion hose to transport the medicine liquid to the medicine liquid injection machine; The second air inlet is in communication with the outside air.

7. The contrast agent intelligent filling device according to claim 6, characterized in that: The middle portion of the second connecting member is hollowed out to form a second liquid inlet channel, and the second liquid inlet channel is connected to the bottom of the medicine bottle.

8. The contrast agent intelligent filling device according to claim 7, characterized in that: The middle part of the second connecting member is hollowed out to form a second air inlet channel, and the second air inlet member is provided with a second air cavity; The second air inlet channel is in communication with the second air cavity; The second air cavity is communicated with the outside air.

9. The contrast agent intelligent filling device according to claim 8, characterized in that: A second fixed cover is arranged in the first air cavity, and the outside air is connected with the second air cavity through the second fixed cover.

10. The contrast agent intelligent filling device according to claim 9, characterized in that: A silicone cover is provided in the second air cavity, and a protrusion is provided in the second air cavity. The silicone cover is provided with a vent hole, and the protrusion is received in the vent hole; When the external air pressure is greater than the air pressure in the medicine bottle, the external air enters the second air cavity through the second fixed cover and pushes the silicone cover open so that the vent hole is separated from the protrusion; When the external air pressure is lower than the air pressure in the medicine bottle, the air in the medicine bottle enters the second air cavity through the second air inlet channel and supports the silicone cover so that the vent hole is connected to the protrusion.

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