CN113082420A

CN113082420A - Gas mixing device, breathing gas supply system and medical equipment

Info

Publication number: CN113082420A
Application number: CN202110428668.6A
Authority: CN
Inventors: 王亚飞; 韦雨晨; 邓锐
Original assignee: Medcaptain Medical Technology Co Ltd
Current assignee: Medcaptain Medical Technology Co Ltd
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2021-07-09

Abstract

The present application provides a gas mixing device, a breathing air supply system and medical equipment. The gas mixing device includes a first regulating component, a second regulating component, a mixing cavity and a compression member; the mixing cavity is respectively connected with the first regulating component, the second regulating component and the second regulating component. The adjustment assembly is communicated with the compression part; the first adjustment assembly is used to adjust the flow of the air; the second adjustment assembly is used to adjust the flow of the medical gas; The air enters the mixing chamber, and the medical gas passing through the second regulating component enters the mixing chamber, and the air and the medical gas are mixed in the mixing chamber to form a mixed gas. The gas mixing device provided by the present application can effectively adjust the flow of air and medical gas without frequently adjusting the power of the compressor by setting the first regulating component and the second regulating component, and can effectively adjust the flow of air and medical gas in order to form a gas mixture that meets the corresponding medical needs. At the same time, the generated heat and noise are reduced.

Description

Gas mixing device, breathing gas supply system and medical equipment

Technical Field

The field belongs to the technical field of medical treatment, and particularly relates to a gas mixing device, a breathing gas supply system and medical equipment.

Background

At present, with the development of medical technology, gas mixing devices are required in various medical scenes to mix air and various medical gases, so that mixed gas meeting corresponding medical requirements is formed. However, in the conventional gas mixing device, the turbine speed is usually required to be frequently adjusted to adjust the flow rates of the air and the medical gas, which causes serious heat generation and noise problems in the conventional gas mixing device.

Disclosure of Invention

An object of the present application is to provide a gas mixing device, a breathing gas supply system, and a medical apparatus, which can reduce the generation of heat and noise while effectively adjusting the flow rate of air and various medical gases.

In order to achieve the purpose of the application, the application provides the following technical scheme:

in a first aspect, the present application provides a gas mixing device comprising a first conditioning assembly, a second conditioning assembly, a mixing chamber, and a compression member; the mixing cavity is communicated with the first adjusting assembly, the second adjusting assembly and the compression piece respectively; the first adjusting component is used for adjusting the flow of air; the second regulating component is used for regulating the flow of the medical gas; the compression piece is used for adjusting the internal air pressure of the mixing cavity, so that air passing through the first adjusting component enters the mixing cavity, and medical gas passing through the second adjusting component enters the mixing cavity, and the air and the medical gas are mixed in the mixing cavity to form mixed gas.

The application provides a gas mixing device is through setting up first adjusting part and second adjusting part to need not the power of frequent regulation compression piece, can effectively adjust air and medical gas's flow, when forming the mist that satisfies corresponding medical demand, reduced the heat and the noise of production.

In one embodiment, the first adjustment assembly includes a lead-through member and a first adjustment member; the conducting piece is respectively communicated with the mixing cavity and the first adjusting piece, the first adjusting piece is communicated with the mixing cavity, the opening degree of the conducting piece is adjusted by the first adjusting piece, and therefore the flow of air entering the mixing cavity through the conducting piece is adjusted.

In one embodiment, the conducting element includes an elastic valve body and a vent valve port, the vent valve port is communicated with the mixing cavity, the elastic valve body is arranged on one side of the vent valve port far away from the mixing cavity, and the first adjusting element adjusts the size of the elastic valve body so as to adjust the opening degree of the vent valve port; when the volume of the elastic valve body is increased, the shielding area of the elastic valve body on the vent valve port is increased, so that the opening degree of the vent valve port is reduced; when the volume of the elastic valve body is reduced, the shielding area of the elastic valve body on the vent valve port is reduced, so that the opening degree of the vent valve port is increased.

In one embodiment, the first adjusting member includes a first port, a second port and a third port, the first port is communicated with the interior of the elastic valve body, the second port is communicated with the outside, and the third port is communicated with the mixing cavity; adjusting the first interface to be communicated with the second interface so as to enable the interior of the elastic valve body to be communicated with the outside, wherein the internal air pressure of the elastic valve body is equal to the atmospheric pressure, so that the volume of the elastic valve body is increased; and adjusting the first interface to be communicated with the third interface so as to communicate the interior of the elastic valve body with the mixing cavity, wherein the internal air pressure of the elastic valve body is less than the atmospheric pressure, so that the volume of the elastic valve body is reduced.

In one embodiment, the second port and the third port are adjustable in size, and the internal air pressure of the elastic valve body is controlled by adjusting the sizes of the second port and the third port.

In one embodiment, the second regulating assembly comprises a second regulating member for regulating the flow of the medical gas entering the mixing chamber through the second gas inlet and a branch flow monitoring member; the branch flow monitoring part is used for measuring the flow of the medical gas entering the mixing cavity through the second gas inlet hole.

In one embodiment, the gas mixing device further comprises a box body, and the first adjusting assembly, the second adjusting assembly, the mixing cavity and the compression element are contained in the box body; the box body comprises a first air inlet interface, a second air inlet interface and an air outlet interface, the first air inlet interface is communicated with the first adjusting component, and air enters the first adjusting component from the first air inlet interface; the second air inlet interface is communicated with the second adjusting component, and medical gas enters the second adjusting component from the second air inlet interface; the air outlet interface is communicated with the mixing cavity, and mixed gas in the mixing cavity is discharged through the air outlet interface.

In a second aspect, the present application further provides a respiratory gas supply system, which includes a first pipeline, a second pipeline, a third pipeline and the gas mixing device of any of the embodiments of the first aspect, wherein the first pipeline, the second pipeline and the third pipeline are all communicated with the gas mixing device, and the first pipeline is used for inputting air to the gas mixing device; the second pipeline is used for inputting medical gas to the gas mixing device; the third pipeline is used for outputting the mixed gas in the gas mixing device.

The application provides a breathe gas supply system through installing the gas mixing device that this application provided to when providing the mist that satisfies corresponding medical demand for the user, effectively reduced the heat and the noise of production.

In one embodiment, a total flow rate monitoring unit and a total concentration monitoring unit are further disposed on the third pipeline, the total flow rate monitoring unit is configured to measure a flow rate of the mixed gas output from the third pipeline, and the total concentration monitoring unit is configured to measure a concentration of the medical gas in the mixed gas output from the third pipeline.

In a third aspect, the present application further provides a medical device comprising a controller, a respiratory exhaust system, and a respiratory gas supply system according to any of the embodiments of the second aspect; the controller is connected with the breathing gas supply system to control the flow of the mixed gas provided by the breathing gas supply system and the concentration of the medical treatment gas in the mixed gas; the controller is connected with the respiratory exhaust system to control the flow of gas exhausted by the respiratory exhaust system.

The application provides a medical equipment, through installation controller, breathing exhaust system and the breathing air supply system that this application provided to when realizing corresponding respiratory function and blocking the function, effectively reduced the heat and the noise of production.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a block diagram of a medical device according to an embodiment of the present application;

FIG. 2 is a schematic diagram of the respiratory gas supply system of the medical device of FIG. 1;

FIG. 3 is a schematic diagram of the gas mixing arrangement of the respiratory gas supply system of FIG. 2;

fig. 4 is a schematic structural view of a first adjustment assembly in the gas mixing apparatus shown in fig. 3.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, fig. 1 is a block diagram of a medical apparatus 100 according to an embodiment of the present disclosure.

The embodiment of the application provides a medical device 100, and the medical device 100 comprises a controller 20, a respiratory exhaust system 30 and a respiratory gas supply system 10 provided by the embodiment of the application. It is understood that the type of the medical apparatus 100 may be various, including but not limited to a ventilator and an anesthesia apparatus, and may be any other apparatus satisfying the corresponding functional requirements, and the type of the medical apparatus 100 is not specifically limited herein.

One end of the breathing gas supply system 10 can be communicated with the outside and a medical gas manufacturing device (not shown), accordingly, air enters the breathing gas supply system 10 from the outside, medical gas enters the breathing gas supply system 10 from the medical gas manufacturing device, and the air and the medical gas are mixed in the breathing gas supply system 10 to form mixed gas with certain concentration; the other end of the respiratory gas supply system 10 is connected to the user to output the mixed gas to the user for the user to complete the corresponding inhalation maneuver.

The type of the medical gas is not specifically limited, and various types of medical gases are available. Illustratively, the medical gas is oxygen and correspondingly, the medical gas producing device is an oxygen generator; illustratively, the medical gas may also be an anesthetic agent and correspondingly, the medical gas production apparatus is an anesthetic agent production apparatus.

The respiratory exhaust system 30 may be connected to a user at one end and to an external or exhaust gas collecting device (not shown) at the other end, so that exhaust gas exhaled by the user can be exhausted to the external or exhaust gas collecting device through the respiratory exhaust system 30, so that the user can complete a corresponding exhalation action.

The controller 20 is connected to the breathing gas supply system 10 to control and regulate the flow rate of the mixed gas provided by the breathing gas supply system 10 and the concentration of the therapeutic gas in the mixed gas. It will be appreciated that controller 20 may be coupled to corresponding monitoring components within respiratory gas supply system 10 (e.g., branch flow monitor 1312, total flow monitor 141, and total concentration monitor 142, hereinafter) to monitor the flow of the resulting gas mixture and the concentration of the medical gas in the gas mixture. Moreover, the controller 20 may be further connected to corresponding regulating components (such as the first regulating component 1352 and the second regulating component 1311, hereinafter) in the respiratory gas supply system 10, so as to transmit corresponding control signals to the regulating components according to the monitored corresponding values, so as to regulate the flow rate of the air and the flow rate of the medical gas in the respiratory gas supply system 10, so that the flow rate of the formed mixed gas and the concentration of the medical gas in the mixed gas meet the corresponding requirements. It should be noted that, due to the installation of the respiratory air supply system 10 provided in the embodiment of the present application, the above-mentioned adjustment process does not generate much heat and noise.

Similarly, the controller 20 is also connected to the respiratory exhaust system 30, and controls the flow rate of the exhaust gas exhausted by the respiratory exhaust system 30 by obtaining corresponding parameters of the respiratory exhaust system 30, which is not described in detail herein. The controller 20 controls the respiratory air supply system 10 and the respiratory exhaust system 30, respectively, such that the two cooperate to provide the physiological needs of mechanical respiration to the user.

It will also be appreciated that there is a need for temporarily interrupting the inspiratory process during a medical procedure, such as when measuring a plateau pressure value, for example, by a user. In the above case, the flow rate of the mixed gas may be adjusted to zero by the controller 20, thereby implementing the suction blocking function. It should be noted that in some special cases, there may be a need to block the exhalation process, or to block both the inhalation and exhalation processes, and in these cases, the controller 20 can control the flow of gas in the respiratory gas supply system 10 and the respiratory gas exhaust system 30 to meet the requirements.

The medical device 100 provided by the embodiment of the present application is provided with the controller 20, the respiratory exhaust system 30 and the respiratory air supply system 10 provided by the embodiment of the present application, so that the generated heat and noise are effectively reduced while the corresponding respiratory function and the blocking function are realized.

Referring to fig. 2, fig. 2 is a schematic structural diagram of the respiratory gas supply system 10 of the medical apparatus 100 shown in fig. 1.

The embodiment of the application provides a breathing air supply system 10, the breathing air supply system 10 comprises a first pipeline 11, a second pipeline 12, a third pipeline 14 and a gas mixing device 13 provided by the embodiment of the application, the first pipeline 11, the second pipeline 12 and the third pipeline 14 are all communicated with the gas mixing device 13, and the first pipeline 11 is used for inputting air to the gas mixing device 13; the second line 12 is used for feeding the medical gas to the gas mixing device 13; the third pipeline 14 is used for outputting the mixed gas in the gas mixing device 13.

It will be appreciated that the end of the first conduit 11 remote from the gas mixing device 13 is in communication with the outside, so that air may enter the gas mixing device 13 through the first conduit 11; the end of the second pipeline 12 far away from the gas mixing device 13 is communicated with the medical gas manufacturing equipment, so that the medical gas can enter the gas mixing device 13 through the second pipeline 12; the end of the third conduit 14 remote from the gas mixing device 13 is connected to the user so that the mixed gas can be output to the user through the third conduit 14 to complete the inhalation process.

In one embodiment, the first pipeline 11 is provided with a filtering element 112, and the filtering element 112 can filter the air entering the air mixing device 13 through the first pipeline 11 to filter dust, impurities, bacteria and viruses or other substances harmful to human health in the air, so that the air delivered to the user meets the medical and health standards.

In one embodiment, the second conduit 12 is provided with a check valve 122 to ensure one-way flow of the medical gas and prevent reverse cross-ventilation of the gas source.

In one embodiment, the second pipeline 12 is further provided with a first pressure monitoring part 123 and a pressure adjusting part 124, the first pressure monitoring part 123 is configured to monitor a pressure value of the medical gas entering the gas mixing device 13 through the second pipeline 12, and the pressure adjusting part 124 is configured to adjust the pressure value of the medical gas, so that the pressure of the medical gas entering the gas mixing device 13 through the second pipeline 12 is not too high, and the medical gas has certain stability.

In one embodiment, the third pipeline 14 is further provided with a total flow rate monitor 141 and a total concentration monitor 142, the total flow rate monitor 141 is used for measuring the flow rate of the mixed gas output from the third pipeline 14, and the total concentration monitor 142 is used for measuring the concentration of the medical gas in the mixed gas output from the third pipeline 14. It can be understood that, during the medical treatment, the flow rate of the mixed gas inhaled by the user and the concentration of the medical gas in the mixed gas have a great influence on the medical effect. Therefore, the presence of the total flow rate monitor 141 and the total concentration monitor 142 enables effective monitoring of the flow rate of the mixed gas and the concentration of the medical gas in the mixed gas. Based on this, the gas mixing device 13 can adjust the flow of the air and the medical gas entering the gas mixing device 13 according to the monitored parameters, so that the mixed gas formed by mixing the air and the medical gas can meet the corresponding medical requirements, and a better medical effect is ensured. It should be noted that, due to the installation of the gas mixing device 13 provided in the embodiment of the present application, the above-mentioned adjustment process does not generate much heat and noise.

The breathing gas supply system 10 provided by the embodiment of the application is provided with the gas mixing device 13 provided by the embodiment of the application, so that the generated heat and noise are effectively reduced while the mixed gas meeting the corresponding medical requirements is provided for a user.

Referring to fig. 3, fig. 3 is a schematic structural diagram of the gas mixing device 13 in the respiratory gas supply system 10 shown in fig. 2.

The embodiment of the present application provides a gas mixing device 13, and this gas mixing device 13 includes first adjusting component 135, second adjusting component 136, mixing cavity 1341 and compression piece 1342, and mixing cavity 1341 communicates with first adjusting component 135, second adjusting component 136 and compression piece 1342 respectively. It should be understood that the reference to "communication" in the embodiments of the present application generally refers to communication through a pipeline, and may also be performed through other manners, and the manner of communication is not specifically limited herein. For convenience of description, the "communication" mentioned in the embodiments of the present application is explained in detail by taking the pipe communication as an example.

The first conditioning assembly 135 is used to regulate the flow of air into the mixing chamber 1341. In the process of entering the mixing cavity 1341 from the outside, the air passes through the first adjusting component 135, and the first adjusting component 135 adjusts the flow rate of the air, so that the flow rate of the air entering the mixing cavity 1341 meets the corresponding requirement.

The second regulating assembly 136 is used to regulate the flow of medical gas into the mixing chamber 1341. During the process of entering the mixing cavity 1341 from the corresponding medical gas manufacturing apparatus, the medical gas passes through the second adjusting assembly 136, and the second adjusting assembly 136 adjusts the flow rate of the medical gas, so that the flow rate of the medical gas entering the mixing cavity 1341 meets the corresponding requirement.

The mixing cavity 1341 is a cavity structure and is respectively communicated with the first adjusting component 135 and the second adjusting component 136, so that air passing through the first adjusting component 135 and medical gas passing through the second adjusting component 136 can both enter the mixing cavity 1341 and are mixed in the mixing cavity 1341 to form mixed gas meeting the corresponding medical requirements.

The compression piece 1342 is communicated with the mixing cavity 1341, the compression piece 1342 is used for adjusting the internal air pressure of the mixing cavity 1341, so that the mixing cavity 1341 is in a negative pressure state, air and medical gas are pumped into the mixing cavity 1341, the compression piece 1342 can also extract the mixed gas in the mixing cavity 1341, and the mixed gas is compressed to be output to a user, so that the mixed gas meeting the corresponding medical requirements is provided for the user. In one particular embodiment, the compression member 1342 is a turbofan.

It will be appreciated that the control of the first and

second adjustment assemblies

135, 136 allows the flow of air and medical gas into the mixing chamber 1341 to be effectively adjusted, thereby eliminating the need to control the flow by frequently adjusting the power of the compression member 1342. Based on this, in the present embodiment, the flow rates of the air and the medical gas can be effectively adjusted under the condition that the power of the compression member 1342 is kept constant, that is, the generated heat and noise are small, so that the flow rate of the mixed gas provided to the user and the concentration of the medical gas in the mixed gas can satisfy the corresponding medical requirement.

The gas mixing device 13 that this application embodiment provided is through setting up first adjusting part 135 and second adjusting part 136 to need not frequently to adjust the power of compressor 1342, can effectively adjust the flow of air and medical gas, when forming the mixed gas that satisfies corresponding medical demand, reduced the heat and the noise of production.

Referring to fig. 4, fig. 4 is a schematic structural diagram of the first adjusting assembly 135 in the gas mixing device 13 shown in fig. 3.

In one embodiment, the first adjusting assembly 135 includes a conducting member 1351 and a first adjusting member 1352, the conducting member 1351 is respectively communicated with the mixing cavity 1341 and the first adjusting member 1352, the first adjusting member 1352 is communicated with the mixing cavity 1341, and the first adjusting member 1352 adjusts an opening degree of the conducting member 1351 to adjust a flow rate of air entering the mixing cavity 1341 through the conducting member 1351. It will be appreciated that, in general, the pressure of the air entering the gas mixing device 13 is low, and therefore, it is difficult for the air to pass through the commonly used regulating valve, which in turn makes it difficult for the commonly used regulating valve to regulate the flow rate of the entering air. In the conventional gas mixing device 13, the flow rate of air is generally adjusted using a suction holding valve, however, the suction holding valve is large in size and expensive, and it is difficult to meet the requirements of miniaturization and low cost. In the present embodiment, air is not transmitted through the first adjustor 1352 but is transmitted through the conduction member 1351 having a large conduction area, so that low-pressure air can effectively pass through; in addition, the flow rate of the air entering the mixing cavity 1341 can be effectively controlled by adjusting the opening degree of the conducting member 1351 through the first adjusting member 1352. As described above, the first adjusting assembly 135 composed of the first adjusting member 1352 and the communicating member 1351 can effectively adjust the flow rate of the air introduced into the mixing chamber 1341, and the first adjusting assembly 135 can satisfy the requirements of miniaturization and low cost with respect to the suction maintaining valve.

In one embodiment, the communication member 1351 includes a resilient valve body 13511 and a vent valve port 13512, the vent valve port 13512 is in communication with the mixing chamber 1341, a resilient valve body 13511 is disposed on a side of the vent valve port 13512 remote from the mixing chamber 1341, and the first regulator 1352 regulates a size of the resilient valve body 13511 to regulate an opening degree of the vent valve port 13512. Wherein, the vent valve port 13512 has a larger conductance area, such that low pressure air can effectively enter the mixing chamber 1341 through the vent valve port 13512; a resilient valve body 13511 is provided on the side of the vent port 13512 remote from the mixing chamber 1341 to block the vent port 13512.

It can be understood that the elastic valve 13511 has a hollow structure and a certain elasticity, and the volume of the elastic valve 13511 can be changed by adjusting the air pressure inside the elastic valve 13511. As the volume of the resilient valve body 13511 increases, the shielded area of the resilient valve body 13511 against the vent port 13512 increases, thereby decreasing the degree of opening of the vent port 13512 and decreasing the flow of air through the vent port 13512; as the volume of the resilient valve body 13511 decreases, the shielded area of the resilient valve body 13511 to the vent port 13512 decreases, thereby increasing the degree of opening of the vent port 13512 and increasing the flow of air through the vent port 13512. In one particular embodiment, the elastomeric valve body 13511 is a silicone diaphragm.

In one embodiment, the first regulator assembly 135 further includes a vent chamber 13513, a vent chamber 13513 houses a flexible valve body 13511 and a vent port 13512, and air enters the vent chamber 13513 from the outside and enters the mixing chamber 1341 through the vent port 13512 in the vent chamber 13513. It will be appreciated that the presence of the through cavity 13513 effectively prevents air from leaking into the first conditioning assembly 135, and the through cavity 13513 also provides some protection to the through member 1351.

In one embodiment, a second pressure monitoring component 1321 is further disposed on the pipeline between the first air inlet 131 and the first adjusting component 135, and the second pressure monitoring component 1321 is configured to monitor the pressure of the air entering the first adjusting component 135 to determine whether the first air inlet 131 is blocked.

In one embodiment, the first trim 1352 includes a first port 13521, a second port 13522, and a third port 13523, the first port 13521 communicating with an interior of the elastomeric valve body 13511, the second port 13522 communicating with ambient, the third port 13523 communicating with the mixing chamber 1341; regulating the first port 13521 to communicate with the second port 13522 to communicate the interior of the resilient valve body 13511 with the ambient, the internal air pressure of the resilient valve body 13511 being equal to atmospheric pressure, such that the volume of the resilient valve body 13511 increases, the resilient valve body 13511 closing the vent port 13512 such that air cannot enter the mixing chamber 1341 through the vent port 13512; the first port 13521 is adjusted to communicate with the third port 13523, so that the interior of the elastic valve body 13511 communicates with the mixing cavity 1341, and the internal air pressure of the elastic valve body 13511 is lower than the atmospheric pressure due to the negative pressure state in the mixing cavity 1341, so that the volume of the elastic valve body 13511 is reduced, and the vent valve port 13512 is opened, so that air can enter the mixing cavity 1341 through the vent valve port 13512. It should be noted that, by the above adjustment manner, the size of the elastic valve 13511 can be effectively adjusted, so as to control the opening or closing of the breather valve port 13512, thereby implementing the functions of suction conduction and suction interruption. It should be noted that the adjustment manner of the volume of the elastic valve body 13511 includes, but is not limited to, the above, and may be any manner that meets the corresponding adjustment requirement, and the adjustment manner of the volume of the elastic valve body 13511 is not specifically limited herein.

In one embodiment, the second and

third ports

13522 and 13523 are adjustable in size to control the internal air pressure of the elastomeric valve body 13511 by adjusting the size of the second and

third ports

13522 and 13523. It will be appreciated that by adjusting the size of the second and

third ports

13522, 13523, the internal air pressure of the resilient valve body 13511 can be effectively adjusted, thereby changing the volume of the resilient valve body 13511 to control the degree of opening of the vent port 13512 and thereby regulate the flow of air into the mixing chamber 1341. In one particular embodiment, first modulation member 1352 is a two-position, three-way modulation valve.

It should be noted that the controller 20 can control the opening or closing of the second port 13522 and the third port 13523, so as to control the switching between the two states of "the first port 13521 communicates with the second port 13522" and "the first port 13521 communicates with the third port 13523", so as to implement the functions of suction conduction and suction blocking. It is further noted that the controller 20 can also control the opening of the second and

third ports

13522 and 13523 to regulate the flow of air into the mixing chamber 1341. It can be understood that, compared with manual control, the control of the above-mentioned interface by the controller 20 can effectively improve the control accuracy and the control efficiency.

Referring again to fig. 3, in one embodiment, the second regulating element 136 comprises a second regulating element 1311 and a branch flow monitoring element 1312, the second regulating element 1311 being used for regulating the flow of the medical gas entering the mixing chamber 1341 through the second gas inlet hole; the branch flow monitor 1312 is used to measure the flow of the medical gas entering the mixing chamber 1341 through the second inlet hole. In a specific embodiment, the second regulator 1311 is a two-position, three-way regulator valve.

In one embodiment, the gas mixing device 13 further comprises a box 137, wherein the box 137 is used for accommodating the first adjusting component 135, the second adjusting component 136, the mixing cavity 1341 and the compression piece 1342. The box 137 includes a first air inlet 131, a second air inlet 132, and an air outlet 133. One end of the first air inlet interface 131 is communicated with the first pipeline 11, the other end of the first air inlet interface is communicated with the first adjusting component 135, and air enters the first adjusting component 135 from the first pipeline 11 through the first air inlet interface 131; one end of the second air inlet port 132 is communicated with the second pipeline 12, the other end is communicated with the second adjusting component 136, and the medical gas enters the second adjusting component 136 from the second pipeline 12 through the second air inlet port 132; one end of the air outlet port 133 is communicated with the mixing cavity 1341, the other end is communicated with the third pipeline 14, and the mixed gas in the mixing cavity 1341 is discharged through the air outlet port 133 and the third pipeline 14 in sequence.

It is understood that the shape of the case 137 may be various as long as it satisfies the corresponding receiving function, and the shape of the case 137 is not specifically limited. Illustratively, the case 137 may have a hollow square shape or a hollow sphere shape. It will also be appreciated that the housing 137 also has a structural strength to protect the components housed therein.

It should be noted that in an embodiment, the second adjusting component 136 may also be disposed outside the box body 137, and the second adjusting component 136 may be fixed on the outer surface of the box body 137. Under this structure, the first adjusting assembly 135, the second adjusting assembly 136, the mixing cavity 1341 and the compressing member 1342 are also commonly integrated with the box 137, so that the same integration effect can be achieved.

In this embodiment, the first adjusting assembly 135, the second adjusting assembly 136, the mixing cavity 1341, the compressing member 1342 and other components are integrated together through the box 137, so as to form a whole, thereby effectively improving the integration level of the gas mixing device 13, simplifying the installation process of the gas mixing device 13, and improving the process efficiency.

While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims

1. A gas mixing device, characterized in that it comprises a first adjustment assembly, a second adjustment assembly, a mixing cavity and a compression member; the mixing cavity is respectively connected with the first adjustment assembly and the second adjustment assembly communicating with the compression member;

the first regulating component is used for regulating the flow of air;

the second regulating component is used for regulating the flow of medical gas;

The compression member is used to adjust the internal air pressure of the mixing chamber, so that the air passing through the first regulating component enters the mixing chamber, and the medical gas passing through the second regulating component enters the mixing chamber air and medical gas are mixed in the mixing chamber to form a mixed gas.

2. The gas mixing device according to claim 1, wherein the first regulating component comprises a conducting member and a first regulating member;

The conducting member communicates with the mixing cavity and the first regulating member respectively, the first regulating member communicates with the mixing chamber, and the first regulating member adjusts the opening degree of the conducting member , so as to adjust the flow rate of the air entering the mixing cavity through the conducting member.

3 . The gas mixing device according to claim 2 , wherein the conducting member comprises an elastic valve body and a ventilation valve port, the ventilation valve port is communicated with the mixing cavity, and the elastic valve body is provided with 3 . On the side of the ventilation valve port away from the mixing cavity, the first adjusting member adjusts the size of the elastic valve body to adjust the opening degree of the ventilation valve port;

When the volume of the elastic valve body increases, the shielding area of the ventilation valve port by the elastic valve body increases, thereby reducing the opening degree of the ventilation valve port;

When the volume of the elastic valve body is reduced, the shielding area of the ventilation valve port by the elastic valve body is reduced, thereby increasing the opening degree of the ventilation valve port.

4 . The gas mixing device according to claim 3 , wherein the first regulating member comprises a first interface, a second interface and a third interface, and the first interface communicates with the interior of the elastic valve body. 5 . , the second interface communicates with the outside world, and the third interface communicates with the mixing cavity;

Adjusting the communication between the first interface and the second interface, so that the inside of the elastic valve body communicates with the outside world, and the internal air pressure of the elastic valve body is equal to the atmospheric pressure, so that the volume of the elastic valve body increases;

Adjust the communication between the first interface and the third interface, so that the interior of the elastic valve body communicates with the mixing cavity, and the internal air pressure of the elastic valve body is less than atmospheric pressure, so that the volume of the elastic valve body decrease.

5 . The gas mixing device according to claim 4 , wherein the sizes of the second interface and the third interface are adjustable, and by adjusting the sizes of the second interface and the third interface, 5 . Control the internal air pressure of the elastic valve body.

6 . The gas mixing device according to claim 2 , wherein the second regulating component comprises a second regulating member and a branch flow monitoring member, and the second regulating member is used to regulate the intake air passing through the second air. 7 . The flow rate of the medical gas entering the mixing cavity through the hole; the branch flow monitoring element is used for measuring the flow rate of the medical gas entering the mixing cavity through the second air inlet hole.

7 . The gas mixing device according to claim 1 , wherein the gas mixing device further comprises a box body, the first regulating component, the second regulating component, and the mixing chamber. 8 . Both the body and the compression member are accommodated in the box body;

The box body includes a first air inlet port, a second air inlet port and an air outlet port, the first air inlet port is in communication with the first adjustment assembly, and air enters the first air inlet port from the first air inlet port. an adjustment assembly; the second air inlet port is communicated with the second adjustment assembly, and the medical gas enters the second adjustment assembly from the second air inlet port; the air outlet port is communicated with the mixing cavity, so The mixed gas in the mixing chamber is discharged from the air outlet.

8. A breathing air supply system, characterized in that it comprises a first pipeline, a second pipeline, a third pipeline and the gas mixing device according to any one of claims 1-7, the first pipeline The first pipeline is used for inputting air to the gas mixing device; the second pipeline is used for The medical gas is input into the gas mixing device; the third pipeline is used for outputting the mixed gas in the gas mixing device.

9 . The breathing air supply system according to claim 8 , wherein a total flow monitoring component and a total concentration monitoring component are further provided on the third pipeline, and the total flow monitoring component is used to measure the The flow rate of the mixed gas output by the three pipelines, and the total concentration monitor is used to measure the medical gas concentration in the mixed gas output from the third pipeline.

10. A medical device, characterized by comprising a controller, a breathing exhaust system and the breathing air supply system according to any one of claims 8-9;

The controller is connected with the breathing air supply system to control the flow rate of the mixed gas provided by the breathing air supply system and the concentration of the medical gas in the mixed gas;

The controller is connected to the breathing exhaust system to control the flow of gas discharged from the breathing exhaust system.