Anaesthesia machine and ventilation control method

Abstract

According to the anesthesia machine and the ventilation control method provided by the invention, the breathing circuit conveys the second gas with the anesthetic to the patient, so that anesthesia breathing support is provided for the patient. The ventilation module receives the first gas so that the first gas can be used for providing respiratory support for the patient according to the first ventilation frequency, and the anesthesia machine provides anesthesia respiratory support for the patient and / or provides respiratory support for the patient according to the respiratory support mode received by the man-machine interaction device. Therefore, the anaesthesia machine can be used for carrying out corresponding ventilation support on a patient according to the requirements of clinical scenes, the application range of the anaesthesia machine is widened, and extra equipment does not need to be used.

Description

Anesthesia machine and ventilation control method

[0001] This application claims partial priority from the PCT application filed on September 6, 2022, with application number "PCT / CN2022 / 117392" and application name "A Anesthesia Machine". Although the PCT application "PCT / CN2022 / 117392" claims priority from the Chinese invention patent application filed on September 6, 2021, with application number "202111040338.6" and application name "A Anesthesia Machine", the PCT application "PCT / CN2022 / 117392" has added some new technical solutions. Therefore, this application actually claims priority from the technical solution first submitted by the PCT application with application number "PCT / CN2022 / 117392" on its application date. The entire contents of the PCT application "PCT / CN2022 / 117392" are incorporated into this application by reference. Technical Field

[0002] The present invention relates to the field of medical devices, and in particular to an anesthesia machine and a ventilation control method. Background Art

[0003] Anesthesia machines are primarily used to provide oxygen, anesthesia, and respiratory support to patients during surgery. During ventilation and anesthesia, the machine delivers the anesthetic gas mixture to the patient while simultaneously receiving exhaled air. To conserve anesthetic gas and improve patient comfort, exhaled air is generally recycled. In a rebreathing system, a portion of the patient's exhaled air is rebreathed as inhaled air. This maximizes the preservation of the anesthetic, a relatively expensive gas component, and plays a significant role in reducing environmental pollution and saving costs. Exhaled air contains CO2, which can cause acidosis if directly rebreathed. Therefore, the CO2 must be removed before recycling the exhaled air. A common method is to use a CO2 absorbent (soda lime) to react with the CO2 to remove the CO2. This reaction also generates water and heat, which helps maintain the temperature and humidity of the patient's inhaled air.

[0004] For these reasons, the anesthesia machine's airway system must be connected to the patient's respiratory system and ensure airtightness to ensure effective ventilation and anesthesia. A common method is to insert a tracheal tube into the patient's trachea via endotracheal intubation, connecting the anesthesia machine and the patient's trachea. The balloon at the end of the tracheal tube ensures airtightness and prevents damage to the tracheal wall.

[0005] However, in some pharyngeal, tracheal, bronchial or lung surgeries, endotracheal intubation cannot be used because it will block the surgical site, making it impossible to perform the operation, or because this ventilation method will cause the surgical site to fluctuate periodically with the ventilation of inspiration and expiration, affecting the surgical effect. Usually, when encountering similar surgical situations, high-frequency jet equipment (such as high-frequency jet ventilators) is required. Such equipment is rarely equipped in anesthesia operating rooms, and the addition of high-frequency jet equipment and the low frequency of use of high-frequency jet equipment will bring about the problem of multiple equipment management. Therefore, many hospitals do not have the conditions for this type of surgery and can only transfer to other hospitals for surgical treatment; or adopt other compromise methods, which greatly reduce the surgical effect and even bring surgical risks.

[0006] Therefore, the usage scenarios of existing anesthesia machines are limited.

[0007] Summary of the Invention

[0008] The present invention mainly provides an anesthesia machine and a ventilation control method to improve the application range of the anesthesia machine.

[0009] One embodiment provides an anesthesia machine, comprising: a housing, a flow monitoring device, a breathing circuit, a first ventilation control device, and a human-machine interaction device;

[0010] The flow monitoring device is used to adjust the flow of the first gas; the first gas after the flow is adjusted by the flow monitoring device is delivered to an anesthetic delivery device to be mixed with the anesthetic provided by the anesthetic delivery device to obtain the second gas;

[0011] The breathing circuit is configured to receive the second gas and deliver the second gas to the patient;

[0012] The first ventilation control device is used to control the breathing circuit to deliver the second gas to the patient, thereby providing anesthetic breathing support for the patient;

[0013] The human-computer interaction device is used to receive a user input of a respiratory support mode provided by the anesthesia machine to the patient;

[0014] Also includes:

[0015] a ventilation module for receiving a first gas to provide respiratory support to a patient using the first gas at a first ventilation frequency; at least a portion of the ventilation module is disposed in the accommodation space formed by the housing to form an integral unit with the anesthesia machine;

[0016] The anesthesia machine also provides anesthesia breathing support and / or breathing support for the patient according to the breathing support mode received by the human-computer interaction device.

[0017] One embodiment provides an anesthesia machine, comprising: a flow monitoring device, a breathing circuit, a first ventilation control device, and a human-machine interaction device;

[0018] The flow monitoring device is used to adjust the flow of the third gas; the third gas after the flow is adjusted by the flow monitoring device is delivered to an anesthetic delivery device to be mixed with the anesthetic to obtain the second gas;

[0019] The breathing circuit is configured to receive the second gas and deliver the second gas to the patient;

[0020] The first ventilation control device is used to control the breathing circuit to deliver the second gas to the patient, thereby providing anesthetic breathing support for the patient;

[0021] The human-computer interaction device is used to receive a user input of a respiratory support mode provided by the anesthesia machine to the patient;

[0022] Also includes:

[0023] a ventilation module configured to receive a first gas and provide respiratory support to a patient for a plurality of respiratory cycles using the first gas at a first ventilation frequency; wherein the ventilation module delivers the first gas to the patient at a variable flow rate within a single respiratory cycle;

[0024] The anesthesia machine also provides anesthesia breathing support and / or breathing support for the patient according to the breathing support mode received by the human-computer interaction device.

[0025] One embodiment provides an anesthesia machine, comprising:

[0026] an anesthesia branch, configured to receive a first gas, mix the first gas with an anesthetic to obtain a second gas, and use the second gas to provide anesthesia breathing support to a patient at a third ventilation rate;

[0027] A ventilation module, configured to receive a first gas to provide respiratory support to a patient using the first gas at a first ventilation frequency; the ventilation module comprising: a gas delivery branch and an output port; the gas delivery branch being configured to receive the first gas;

[0028] The ventilation module further includes a second control valve, which is used to form the first gas in the gas delivery branch into a gas flow at a first ventilation frequency; or the ventilation module further includes a first control valve and a third control valve, which together form the first gas in the gas delivery branch into a gas flow at the first ventilation frequency;

[0029] The output port is used to output the airflow of the first ventilation frequency;

[0030] The housing includes at least a portion of the ventilation module disposed in a receiving space formed by the housing, and the ventilation module forms a whole with the anesthesia machine.

[0031] One embodiment provides an anesthesia machine, comprising: a gas source interface, a breathing circuit, and a first ventilation control device;

[0032] One end of the gas source interface is used to connect to the gas source, and the other end is used to communicate with the anesthetic delivery device; the anesthetic delivery device is used to mix the gas provided by the gas source with the anesthetic and deliver the mixed gas to the breathing circuit;

[0033] The first ventilation control device is used to control the breathing circuit so that the mixed gas is delivered to the patient, thereby providing anesthesia breathing support for the patient;

[0034] It is characterized by also including:

[0035] A ventilation module is used to provide respiratory support to a patient using the gas provided by the gas source; wherein the ventilation module includes a gas delivery branch, which receives the gas provided by the gas source and provides respiratory support to the patient at a ventilation frequency of more than 50 times / minute.

[0036] One embodiment provides an anesthesia machine, comprising: a gas source interface, a breathing circuit, and a first ventilation control device;

[0037] One end of the gas source interface is used to connect to the gas source, and the other end is used to communicate with the anesthetic delivery device; the anesthetic delivery device is used to mix the gas provided by the gas source with the anesthetic and deliver the mixed gas to the breathing circuit;

[0038] The first ventilation control device is used to control the breathing circuit so that the mixed gas is delivered to the patient, thereby providing anesthesia breathing support for the patient;

[0039] Also includes:

[0040] The ventilation module is used to connect to the injection accessory, receive the gas output by the gas source interface and adjust it so that the gas passes through the injection accessory in the form of a jet airflow to provide respiratory support to the patient.

[0041] One embodiment provides an anesthesia machine, comprising: a gas source interface, a breathing circuit, and a human-machine interaction device;

[0042] One end of the gas source interface is used to connect to the gas source, and the other end is used to communicate with the anesthetic delivery device; the anesthetic delivery device is used to mix the third gas provided by the gas source with the anesthetic, and deliver the mixed second gas to the breathing circuit;

[0043] The breathing circuit is used to deliver the second gas to the patient, thereby providing anesthetic breathing support to the patient;

[0044] The human-computer interaction device is used to receive a user input of a respiratory support mode provided by the anesthesia machine to the patient;

[0045] Also includes:

[0046] a communication module, configured to communicate with an external ventilation device, wherein the ventilation device is configured to provide respiratory support to a patient using a first gas at a first ventilation frequency, wherein the first ventilation frequency is not zero;

[0047] The anesthesia machine also provides anesthesia breathing support for the patient according to the breathing support mode received by the human-computer interaction device and / or controls the ventilation device through the communication module so that the ventilation device provides breathing support for the patient.

[0048] One embodiment provides a ventilation control method for an anesthesia machine, comprising:

[0049] Receiving user input of a respiratory support mode provided by the anesthesia machine;

[0050] When the received respiratory support mode is providing anesthetic respiratory support, receiving a third gas, controlling the third gas to mix with an anesthetic to obtain a second gas, controlling the second gas to enter a breathing circuit of the anesthesia machine, and controlling the breathing circuit to output the second gas, thereby providing anesthetic respiratory support for the patient;

[0051] When the received respiratory support mode is respiratory support provided by a ventilation module, a first gas is received, and the ventilation module is controlled to use the first gas at a non-constant flow rate to provide respiratory support for the patient in a single respiratory cycle.

[0052] In the anesthesia machine according to the above embodiment, the breathing circuit delivers a second gas containing an anesthetic to the patient, thereby providing anesthetic respiratory support. The ventilation module receives the first gas and uses the first gas to provide respiratory support to the patient at a first ventilation frequency. The anesthesia machine provides anesthetic respiratory support and / or respiratory support to the patient based on the respiratory support mode received by the human-computer interaction device. Thus, the anesthesia machine can be used to provide ventilation support to the patient according to the needs of the clinical scenario, expanding the application range of the anesthesia machine without the need for additional equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] FIG1 is a block diagram of an existing anesthesia machine;

[0054] FIG2 is a structural block diagram of an anesthesia machine according to an embodiment of the present invention;

[0055] FIG3 is a structural block diagram of an anesthesia machine according to an embodiment of the present invention;

[0056] FIG4 is a structural block diagram of an anesthesia machine according to an embodiment of the present invention;

[0057] FIG5 is a structural block diagram of an embodiment of a ventilation module in an anesthesia machine provided by the present invention;

[0058] FIG6 is a gas circuit diagram of an embodiment of a ventilation module in an anesthesia machine provided by the present invention;

[0059] FIG7 is a gas circuit diagram of an embodiment of a ventilation module in an anesthesia machine provided by the present invention;

[0060] FIG8 is a gas circuit diagram of an embodiment of a ventilation module in an anesthesia machine provided by the present invention;

[0061] FIG9 is a pressure waveform diagram displayed on a display of the anesthesia machine provided by the present invention;

[0062] FIG10 is a schematic diagram of the main monitoring interface on the display of the anesthesia machine provided by the present invention;

[0063] FIG11 is a structural block diagram of a flow monitoring device in the embodiment shown in FIG3 ;

[0064] FIG12 is a structural block diagram of a flow monitoring device in the embodiment shown in FIG4 ;

[0065] FIG13 is a gas circuit diagram of an embodiment of a spray device in an anesthesia machine provided by the present invention;

[0066] FIG14 is a structural block diagram of an anesthesia machine according to an embodiment of the present invention;

[0067] FIG15 is a flow chart of an embodiment of a ventilation control method provided by the present invention;

[0068] FIG16 is a structural block diagram of an anesthesia machine according to an embodiment of the present invention. DETAILED DESCRIPTION

[0069] The present invention will be further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions, and for those skilled in the art, it is not necessary to describe these related operations in detail. They will fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0070] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0071] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0072] As shown in Figure 1, an existing anesthesia machine generally includes an air source module 10, an anesthetic delivery device 20, a breathing circuit 30, and a first ventilation control device 40. The air source module 10 is connected to the breathing circuit 30 via the anesthetic delivery device 20, that is, the three are connected in sequence.

[0073] Gas source module 10 is used to provide the gas required for anesthesia machine, i.e., provides the first gas, such as providing one or more of oxygen, air and laughing gas (nitrous oxide), because it is necessary to provide respiratory support for the patient, so at least oxygen-containing in the gas provided. That is, the first gas can be oxygen, can also be air, can also be a mixed gas of oxygen and air, a mixed gas of air and laughing gas, a mixed gas of oxygen and laughing gas or a mixed gas of oxygen, air and laughing gas etc. Gas source module 10 can be a gas source interface, and gas source interface is used to connect an external gas source. External gas source provides the gas required for anesthesia machine to anesthesia machine through the gas source interface. Gas source module 10 can also be an air compressor, an oxygen concentrator etc., which produces the first gas required for anesthesia machine by itself. Subsequent embodiments are described with the gas source interface as an example.

[0074] The anesthetic delivery device 20 is used to mix the first gas provided by the gas source module 10 with the anesthetic, control the anesthetic concentration of the mixed gas (second gas), and deliver the mixed gas (second gas) to the breathing circuit 30. The anesthetic delivery device 20 includes a vaporizer. The anesthetic delivery device 20 can be part of the anesthesia machine, that is, the anesthesia machine is equipped with the anesthetic delivery device 20 after leaving the factory; the anesthetic delivery device 20 can also be an accessory of the anesthesia machine, which is installed on the anesthesia machine when it is in use.

[0075] The breathing circuit 30 is an airway connecting the anesthetic delivery device 20 and the patient, receiving the second gas and delivering the second gas to the patient. It can also recycle the gas exhaled by the patient to save anesthetics and reduce environmental pollution. It can include various connecting tubes and accessories, and the accessories can be endotracheal tubes, endotracheal tubes with air bags at the end, etc. A gas purification device can be provided in the breathing circuit 30, and the gas purification device is used to remove at least part of the carbon dioxide exhaled by the patient into the breathing circuit. For example, a CO2 absorbent (soda lime) can be provided in the gas purification device. The CO2 absorbent reacts with CO2 to achieve the purpose of removing CO2, and the reaction generates water and heat at the same time, which is conducive to maintaining the temperature and humidity of the patient's inhaled gas.

[0076] The first ventilation control device (i.e., the anesthesia ventilation control device) 40 is used to control the breathing circuit 30 so that the mixed gas (the second gas) is delivered to the patient, thereby providing anesthesia breathing support for the patient. Providing anesthesia breathing support will cause the patient to have a breathing cycle, so the anesthesia breathing support provided to the patient has a certain ventilation frequency (for ease of distinction, referred to as the third ventilation frequency). That is, the first ventilation control device 40 controls the breathing circuit 30 so that the second gas is periodically delivered to the patient, thereby providing periodic anesthesia breathing support for the patient. The periodicity here refers to the breathing cycle formed by ventilation at the third ventilation frequency. In other words, the first ventilation control device 40 controls the breathing circuit 30 so that the second gas provides anesthesia breathing support to the patient at the third ventilation frequency. Surgery takes time, so anesthesia breathing support usually lasts for a period of time and has multiple breathing cycles.

[0077] The first ventilation control device 40 can automatically control anesthetic ventilation or manually (e.g., using a balloon). For example, the first ventilation control device 40 may include multiple valves and a board for actuating the multiple valves. The board controls the multiple valves to periodically deliver the second gas to the patient, thereby providing periodic anesthetic respiratory support.

[0078] During the operation of the anesthesia machine, the gas source module 10 provides the first gas, which is controlled by the flow monitoring device, and then the anesthetic is added and the concentration is adjusted through the evaporator to form the second gas; the second gas enters the breathing circuit 30, and the first ventilation control device 40 performs ventilation control to deliver the second gas to the patient. The waste gas exhaled by the patient is purified by the gas purification device and then discharged or recycled; during the above process, the anesthesia machine will also monitor the machine status and patient parameters to ensure patient safety and issue abnormal alarms.

[0079] The present invention creatively integrates a ventilation module that can provide respiratory support into an anesthesia machine, so that the anesthesia machine can provide respiratory support through the ventilation module and / or provide anesthetic respiratory support through a first ventilation control device. For example, in some specific scenarios, such as when there is no need to use the inhalation anesthesia function of the anesthesia machine, the patient can be provided with respiratory support through the ventilation module of the anesthesia machine, which increases the application range of the anesthesia machine. At the same time, there is no need to use additional equipment, eliminating the management problem of multiple devices. Among them, the respiratory support provided by the ventilation module can be high-frequency ventilation (for example, the ventilation module includes a gas delivery branch, the gas delivery branch receives gas provided by an external gas source, and provides respiratory support to the patient at a ventilation frequency of not less than 50 times / minute (50bpm) or not less than 3Hz), or it can be low-frequency ventilation, etc. The ventilation mode of the ventilation module can be jet ventilation or non-jet ventilation; when jet ventilation is provided, the ventilation module can further provide high-frequency jet ventilation. The following is a detailed description through some embodiments.

[0080] As shown in Figure 2, the anesthesia machine provided by the present invention has, on the basis of the existing anesthesia machine, an increase in a ventilation module 50 that is communicated with the gas source module 10. The gas source module 10 and the ventilation module 50 can be directly connected or indirectly connected, and in short, they can be communicated. The ventilation module 50 is used to provide respiratory support to the patient using the first gas (such as oxygen and / or air) provided by the gas source module 10, that is, to receive the first gas to use the first gas to provide respiratory support for the patient. Similarly, the ventilation module 50 provides respiratory support so that the patient has a respiratory cycle, so the respiratory support provided by the ventilation module 50 to the patient has a certain ventilation frequency (for ease of distinction, referred to as the first ventilation frequency). That is, the ventilation module 50 receives the first gas to carry out periodic respiratory support for the patient. The periodicity here refers to the respiratory cycle formed by ventilation at the first ventilation frequency. In other words, the ventilation module 50 receives the first gas to use the first gas to provide respiratory support to the patient at the first ventilation frequency. Usually, respiratory support provided to a patient lasts for a period of time, so the respiratory support has multiple respiratory cycles, that is, the ventilation module 50 uses the first gas at the first ventilation frequency to provide the patient with respiratory support of multiple respiratory cycles.

[0081] It can be seen that the present invention can also utilize the anesthesia machine to ventilate the patient when inhalation anesthesia is not required, thereby expanding the application scope of the anesthesia machine and eliminating the need for additional equipment. In some usage scenarios, the human-machine interaction device of the anesthesia machine can be used to receive the respiratory support method provided by the anesthesia machine to the patient. For example, trigger buttons for different respiratory support methods can be provided on the display interface of the human-machine interaction device. The anesthesia machine can decide whether to use the ventilation module to provide periodic respiratory support to the patient, or to use the breathing circuit to provide periodic anesthetic respiratory support to the patient, or to use both to provide respiratory support to different patients at the same time, based on the respiratory support method received by the human-machine interaction device. The "periodic respiratory support" and "periodic anesthetic respiratory support" mentioned in the present invention represent two different respiratory support methods. The common point between the two is that gas delivery is provided to the patient at a variable flow rate within a respiratory cycle. The difference between the two is that the gas delivered by the periodic anesthetic respiratory support includes anesthetics, while the gas delivered under the periodic respiratory support method does not contain anesthetics. Specifically, the respiratory support provided by the ventilation module 50 to the patient means that a first gas is delivered to the patient at a variable flow rate within a single respiratory cycle, that is, the first gas is delivered to the patient at two flow rates, one large and one small, within a single respiratory cycle, and the small flow rate may be 0 or not. When the small flow rate is 0, it means that no gas is delivered to the patient during part of the single respiratory cycle. The first ventilation control device provides anesthetic respiratory support to the patient, which means that a second gas is delivered to the patient at a variable flow rate within a single respiratory cycle, that is, the second gas is delivered to the patient at two flow rates, one large and one small, within a single respiratory cycle, and the small flow rate may be 0 or not. In this embodiment, since the flow rates provided by the two respiratory support modes vary in a single respiratory cycle, the first ventilation frequency and the third ventilation frequency are both non-zero ventilation frequencies, or the values ​​of the first ventilation frequency and the third ventilation frequency are greater than zero.

[0082] The ventilation module 50 can be connected to various accessories, such as spray accessories, nasal plugs, nasal masks, face masks, etc. Doctors can connect appropriate accessories and perform corresponding ventilation methods according to the patient's actual situation and ventilation needs, which is very convenient.

[0083] The ventilation module 50 can be implemented in a variety of ways, as shown in Figures 6, 7, and 8. The specific ventilation mode of the periodic respiratory support provided by it can be high-frequency ventilation and / or jet ventilation, wherein jet ventilation can be high-frequency jet ventilation or low-frequency jet ventilation. The expression "high-frequency / jet ventilation" used herein refers to high-frequency ventilation or jet ventilation. This is illustrated below with reference to some embodiments.

[0084] Example 1:

[0085] In this embodiment, the ventilation module 50 provides high-frequency ventilation. For example, as shown in FIG3 and FIG4 , the ventilation module 50 includes a high-frequency ventilation device 501 .

[0086] The high-frequency ventilation device 501 is used to ventilate the patient at a ventilation frequency of at least 50 times / minute, thereby providing periodic respiratory support for the patient. Of course, the patient can also be ventilated at a higher ventilation frequency of more than 3Hz. As shown in Figure 5, the high-frequency ventilation device 501 may include a gas delivery branch 500, a second control valve T5 and an output port 530. The high-frequency ventilation device 501 receives the first gas through the gas delivery branch 500. The second control valve T5 is arranged in the gas delivery branch 500 and is controlled to switch the flow rate at a switching frequency of at least 50 times / minute, so that the first gas output from the output port 530 forms a high-frequency airflow. Of course, the flow rate can also be switched at a higher switching frequency of more than 3Hz. The expression "high-frequency airflow" used herein refers to a gas whose output frequency is greater than a certain critical value, for example, a gas whose output frequency is greater than or equal to 50 times / minute, or a gas whose output frequency is greater than or equal to 3Hz.

[0087] The ventilation frequency (flow switching frequency or valve opening switching frequency) of the second control valve T5 can be pre-set. The second control valve T5 is used for high-frequency ventilation control, such as high-frequency switching between two different valve flow rates, one large and one small (the switching of valve openings causes changes in flow rate within a single respiratory cycle). The frequency can be above 50 times / minute, for example, between 3-20 Hz, so that the first gas forms a high-frequency pulsed airflow. The high-frequency pulsed airflow can provide high-frequency jet ventilation to the patient after passing through the subsequent jet attachment. If the jet attachment is not subsequently connected, the high-frequency pulsed airflow can provide high-frequency ventilation to the patient. The second control valve T5 can be a solenoid valve, an electromagnetic servo valve, an electromagnetic on-off valve, or an electromagnetic proportional valve.

[0088] In this embodiment, the high-frequency ventilation device 501 provides periodic respiratory support at a first ventilation frequency, and the first ventilation control device 40 controls the breathing circuit 30 to provide periodic anesthetic respiratory support at a third ventilation frequency. The first ventilation frequency is greater than the third ventilation frequency. For example, the first ventilation frequency is greater than or equal to 50 times / minute, or greater than or equal to 3 Hz, and the third ventilation frequency is less than 50 times / minute, or less than 3 Hz.

[0089] There are many ways to implement the high-frequency ventilation device 501, as shown in Figures 6, 7 and 8, which are introduced below one by one.

[0090] As shown in Figure 7, the first gas may include oxygen. The gas source module 10 includes an oxygen unit for providing oxygen, for example, an oxygen interface or an oxygen concentrator. The oxygen interface is used to connect to an external oxygen source, such as an oxygen interface connected to a hospital's oxygen delivery pipeline, oxygen cylinder, etc. The gas delivery branch 500 includes an oxygen branch 510. In other words, the ventilation module 50 or high-frequency ventilation device 501 includes: an oxygen branch 510, a second control valve T5, and an output port 530. The oxygen branch 510 is connected to the oxygen unit, for example, the two are directly connected. The oxygen unit is connected to the output port 530 via the oxygen branch 510. The second control valve T5 is disposed in the oxygen branch 510. The second control valve T5 switches the flow rate at a set frequency (e.g., at least 3 Hz). This can be used to control the oxygen flow rate of the oxygen branch 510 and also to form a high-frequency airflow of the oxygen output from the output port 530, thereby providing periodic high-frequency ventilation for the patient. The oxygen branch 510 may further be provided with a first switch valve T1 for controlling the on-off of the oxygen branch 510 .

[0091] As shown in Figure 8, the first gas may also include air. The gas source module 10 includes an air unit for providing air, for example, the air unit is an air interface. The air interface is used to connect to an external air source, such as an air delivery pipeline in a hospital. For another example, the air unit is a turbine that can obtain air from the external atmospheric environment. The gas delivery branch 500 includes an air branch 520, that is, the ventilation module 50 or the high-frequency ventilation device 501 includes: an air branch 520, a second control valve T5 and an output port 530. The air branch 520 is connected to the air unit, for example, the two are directly connected. The air unit is connected to the output port 530 through the air branch 520. The second control valve T5 is arranged in the air branch 520. The second control valve T5 switches the flow rate at a set frequency (for example, at least 3 Hz). It can be used to control the air flow of the air branch 520 and also to form a high-frequency airflow of the air output from the output port 530, thereby providing periodic high-frequency ventilation for the patient. The air branch 520 may further be provided with a second switch valve T2 for controlling the on-off of the air branch 520 .

[0092] In the embodiment shown in Figures 7-8, the second control valve T2 switches the flow rate at a frequency that can achieve high-frequency ventilation. During the high-frequency adjustment of the valve opening size, the flow rates of the oxygen branch and the air branch are controlled by the opening size, and the ventilation frequency of the airflow in the oxygen branch and the air branch is controlled by the switching frequency.

[0093] As shown in Figure 6, the first gas may also include oxygen and air. The gas source module 10 includes an oxygen unit and an air unit for providing oxygen. The gas delivery branch 500 includes an oxygen branch 510 and an air branch 520. Specifically, the ventilation module 50, or high-frequency ventilation device 501, includes an oxygen branch 510, an air branch 520, a second control valve T5, and an output port 530. The oxygen branch 510 is connected to the oxygen unit, for example, directly. The air branch 520 is connected to the air unit, for example, directly. After the oxygen branch 510 and the air branch 520 converge, they are connected to the output port 530 through the second control valve T5. The oxygen branch 510 is provided with a first control valve T3 for controlling the oxygen flow rate of the oxygen branch 510. A first on / off valve T1 may also be provided in the oxygen branch 510 for controlling the on / off of the oxygen branch 510. The first on / off valve T1 serves as a safety protection. A third control valve T4 is provided in the air branch 520 to control the air flow rate in the air branch 520. A second on-off valve T2 may also be provided in the air branch 520 to control the on / off operation of the air branch 520; the second on-off valve T2 serves as a safety feature. The first control valve T3 can be a proportional valve or a flow valve, and the third control valve T4 can be a proportional valve or a flow valve. The first and third control valves T3 and T4 can jointly control the total flow rate and oxygen concentration of the oxygen-air mixture. The second control valve T5 switches the flow rate at a set frequency (e.g., at least 3 Hz), allowing the combined air and oxygen mixture to form a high-frequency airflow, which is output through the output port 530 to provide high-frequency ventilation to the patient. In some embodiments, as an alternative to the embodiment shown in FIG. 6 , the second control valve T5 may be omitted, and the first and third control valves T3 and T4 may be used to jointly control high-frequency ventilation. That is, the first control valve T3 is used to both control the oxygen flow rate of the oxygen branch 510 and to form a high-frequency airflow in the oxygen branch, thereby achieving high-frequency ventilation. The third control valve T4 is used to both control the air flow rate of the air branch 520 and to form a high-frequency airflow in the air branch, thereby achieving high-frequency ventilation. In this alternative embodiment, the first and third control valves T3 and T4 switch their flow rates at a frequency that enables high-frequency ventilation. During the high-frequency adjustment of the valve opening, the flow rates of the oxygen branch and the air branch are controlled by the valve opening, and the ventilation frequency of the airflow in each branch is controlled by the switching frequency. Therefore, as an alternative to the embodiment shown in Figure 6, by controlling the first and third control valves T3 and T4 to switch between two different valve flow rates (e.g., switching between valve opening and partial closure at a high frequency, or switching between valve opening and full closure at a high frequency) at a first ventilation frequency (e.g., greater than or equal to 50 times / minute), a high-frequency airflow is formed from the mixture of oxygen and air, thereby providing high-frequency ventilation to the patient.

[0094] In the embodiments of Figures 6-8 , both the first on-off valve T1 and the second on-off valve T2 serve as safety protection. If the ventilation module 50 is not in use and gas is being output from the ventilation module 50, this could affect the gas supply of the anesthesia delivery system of the original anesthesia machine and the ventilation of the anesthesia ventilator, and also result in a waste of oxygen or air. Therefore, the first on-off valve T1 and the second on-off valve T2 are provided to prevent gas output caused by the oxygen control valve T3, the air control valve T4, or the second control valve T5 failing to close when the ventilation module is not in use.

[0095] As can be seen from the high-frequency ventilation device 501 described above, the high-frequency airflow generated at its output port 530 ventilates the patient at a frequency of at least 50 breaths per minute. Alternatively, in some embodiments, the high-frequency airflow generated at its output port 530 ventilates the patient at a frequency between 50 and 1500 bpm. High-frequency ventilation includes high-frequency positive pressure ventilation, high-frequency oscillation ventilation, and high-frequency jet ventilation. When the high-frequency ventilation device described above is used for high-frequency positive pressure ventilation or high-frequency oscillation ventilation, the patient is ventilated at a frequency of at least 3 Hz; when the high-frequency ventilation device is used for high-frequency jet ventilation, the patient is ventilated at a frequency between 50 and 1500 bpm. The high-frequency ventilation provided by the ventilation module 50 can be pure high-frequency ventilation or can be combined with the jet accessory 70 to form high-frequency jet ventilation. Specifically, if the output port 530 is not connected to the jet accessory but to other ventilation accessories (such as an endotracheal tube, intubation tube, face mask, nasal mask, etc.), the high-frequency ventilation device 501 simply provides high-frequency ventilation to the patient. If the output port 530 is connected to a jet attachment, the high-frequency ventilation device 501 can further provide high-frequency jet ventilation for the patient. Taking the latter as an example, the output port 530 can be used to connect a jet attachment, and the high-frequency airflow output by the output port 530 is formed into a high-frequency jet airflow through the jet attachment transmission. The jet attachment can be provided by a third-party manufacturer, and the user can connect it to the output port 530. Of course, the jet attachment can also be a part of the anesthesia machine accessories, that is, the anesthesia machine includes the jet attachment connected to the high-frequency ventilation device 501. The jet attachment receives the first gas output by the high-frequency ventilation device 501 and outputs the first gas in a high-frequency jet airflow mode. That is, what the output port 530 outputs is a high-frequency airflow (high-frequency pulsed airflow), which becomes a high-frequency jet airflow after passing through the jet attachment. The ventilation frequency of the high-frequency jet airflow to ventilate the patient can be more than 50 times / minute, can also be between 50-1500bpm, can also be more than 3Hz, thereby providing high-frequency jet ventilation for the patient. For high-frequency oscillatory ventilation and high-frequency positive pressure ventilation, the ventilation frequency can be above 3 Hz; for high-frequency jet ventilation, the ventilation frequency can be between 50 and 1500 bpm. The jet accessory includes a jet channel with an output aperture of less than 4 mm. The jet accessory can include a nozzle, a needle, or a stent (e.g., a bronchoscope, a bronchoscope, a sheath), etc. The stent is used to support human tissue or connect to an endotracheal tube to facilitate surgery. The stent wall is provided with a hole for jet injection (e.g., with an aperture of less than 4 mm).

[0096] Example 2:

[0097] In this embodiment, the ventilation mode provided by the ventilation module 50 is jet ventilation. The ventilation module 50 is also used to connect to a jet accessory, receive the gas output from the gas source interface and adjust it so that the gas passes through the jet accessory and provides respiratory support to the patient in the form of a jet airflow. The gas circuit diagram is still as shown in Figures 6-8. That is, the ventilation module 50 includes a gas delivery branch 500, a second control valve T5 and an output port 530. The second control valve T5 is arranged in the gas delivery branch 500 and is used to control the ventilation module 50 to provide periodic respiratory support. The output port 530 is used to connect to the jet accessory. The ventilation module 50 receives the first gas through the gas delivery branch 500, and the first gas is output through the jet accessory 70 connected to the output port 530 and formed into a jet airflow. In some embodiments, the anesthesia machine may include a jet accessory 70 connected to the ventilation module 50, and the jet accessory 70 receives the first gas output by the ventilation module 50 and forms the first gas into a jet airflow. In other embodiments, the anesthesia machine may not include a jet attachment, and the user may subsequently install the jet attachment on the ventilation module output port 530. As used herein, the term "jet ventilation" refers to a ventilation method in which, during the delivery phase of a respiratory cycle, high-pressure gas is ejected into the respiratory tract via a fine-aperture jet attachment, producing high-speed gas. This high-speed gas utilizes the entrainment / Venturi effect to supplement tidal volume. The term "jet airflow," as used herein in conjunction with jet ventilation, refers to the high-speed airflow delivered by the jet attachment.

[0098] In this embodiment, the ventilation module 50 may have various gas path diagrams, as shown in FIG6 , FIG7 and FIG8 , which are described one by one below.

[0099] As shown in Figure 7, the gas source module 10 includes an oxygen unit, and the first gas includes oxygen provided by the oxygen unit. The gas delivery branch 500 includes an oxygen branch 510, that is, the ventilation module includes: an oxygen branch 510, a second control valve T5 and an output port 530. The oxygen unit is connected to the output port 530 through the oxygen branch, and the output port 530 is used to connect the jet attachment. The second control valve T5 is arranged in the oxygen branch 510, and is used to control the oxygen flow of the oxygen branch 510 and to form a periodic jet airflow after the oxygen output from the output port 530 passes through the jet attachment, thereby providing periodic jet ventilation for the patient. Similarly, the oxygen branch 510 can also be provided with a first switch valve T1 for controlling the on-off of the oxygen branch 510.

[0100] As shown in Figure 8, the air source module 10 includes an air unit, and the first gas includes air provided by the air unit. The gas delivery branch 500 includes an air branch 520, that is, the ventilation module 50 includes: an air branch 520, a second control valve T5 and an output port 530. The air unit is connected to the output port 530 through the air branch 520. The output port is used to connect the jet attachment. The second control valve T5 is arranged in the air branch 520, which is used to control the air flow of the air branch 520 and to form a periodic jet airflow after the air output from the output port 530 passes through the jet attachment, thereby providing periodic jet ventilation for the patient. Similarly, a second switch valve T2 for controlling the on-off of the air branch 520 can also be provided in the air branch 520.

[0101] In the embodiments of Figures 7 and 8 , the second control valve T5 switches flow rate at a constant frequency. During valve opening adjustment, the valve opening controls the flow rates of the oxygen and air branches, while the switching frequency controls the ventilation frequency of the airflow in the oxygen and air branches, enabling the oxygen and air branches to each output a periodic airflow. The periodic airflow at the output port, when output through the jet channel of the jet accessory, provides periodic jet ventilation to the patient.

[0102] As shown in Figure 6, the gas source module 10 includes an oxygen unit for providing oxygen and an air unit for providing air. The first gas includes oxygen provided by the oxygen unit and air provided by the air unit. The gas delivery branch 500 includes an oxygen branch and an air branch. That is, the ventilation module 50 includes: an oxygen branch 510, an air branch 520, a second control valve T5, and an output port 530. The oxygen branch 510 is connected to the oxygen unit, and the air branch 520 is connected to the air unit. After the oxygen branch 510 and the air branch 520 converge, they are connected to the output port 530 through the second control valve T5. The output port 530 is used to connect to the injection accessory. Specifically, the oxygen branch 510 is provided with a first control valve T3, and the air branch 520 is provided with a third control valve T4. The first control valve T3 is used to control the oxygen flow rate of the oxygen branch 510, and the third control valve T4 is used to control the air flow rate of the air branch 520. The second control valve T5 is used to form a periodic jet airflow when the merged mixed gas of air and oxygen is output through the jet accessory connected to the output port 530, thereby providing periodic jet ventilation for the patient.

[0103] In some embodiments, as an alternative to the embodiment shown in FIG6 , the second control valve T5 may be omitted, and instead the first and third control valves T3 and T4 may be used together to implement jet control. Specifically, the first control valve T3 is used to both control the oxygen flow rate of the oxygen branch 510 and to form a periodically output oxygen flow from the oxygen branch, thereby implementing jet ventilation. The third control valve T4 is used to both control the air flow rate of the air branch 520 and to form a periodically output air flow from the air branch, thereby implementing jet ventilation. Specifically, the mixed gas resulting from the convergence of the periodic airflows of the oxygen branch 510 and the air branch 520 forms a periodic jet flow when output through the jet accessory connected to the output port 530.

[0104] As can be seen from the embodiments shown in Figures 6-8, in this embodiment, the ventilation module 50 provides periodic respiratory support to the patient by performing jet ventilation. Jet ventilation is a form of positive pressure ventilation, a ventilation method in which high-pressure gas is injected into the respiratory tract at high speed while maintaining an open airway. Jet ventilation has a wide range of ventilation frequencies. To meet the needs of different physiological conditions of users, jet ventilation can have multiple ventilation frequencies, such as high-frequency jet ventilation and low-frequency jet ventilation. High-frequency and low-frequency are relative concepts, equivalent to having multiple ventilation frequency gears, with high-frequency jet ventilation having a higher frequency than low-frequency jet ventilation. In some embodiments, for example, the frequency of high-frequency jet ventilation can be between 50-1500 bpm. In other embodiments, the frequency of high-frequency jet ventilation can be above 3 Hz, for example, between 3-20 Hz; the frequency of low-frequency ventilation can be between 10-50 bpm, for example. In the present application, another difference between jet ventilation and periodic anesthetic respiratory support controlled by the first ventilation control device is that jet ventilation is positive pressure ventilation under open airway, while periodic anesthetic respiratory support is applied to ventilation scenarios with closed airway or intubation.

[0105] In the prior art, some anesthesia machines, in addition to providing anesthetic respiratory support, also offer high-flow oxygen therapy. This involves delivering a high flow of oxygen to the patient, thereby pre-oxygenating the patient, extending the patient's asphyxia window, and allowing the physician time for intubation and other procedures. Pre-oxygenation does not involve controlling the respiratory cycle, whereas the newly added ventilation module 50 of this embodiment provides periodic respiratory support to the patient, which involves controlling the respiratory cycle, specifically the ventilation frequency.

[0106] In one embodiment, the ventilation module 50 may include a second ventilation control device. For example, the second ventilation control device may also include one or more valves and a card for driving the one or more valves. The one or more valves are disposed in a gas delivery branch (such as the oxygen branch or air branch described above). The card controls the one or more valves (such as the various control valves shown in Figures 6-8 ) to periodically deliver the first gas to the patient, thereby providing periodic respiratory support. The card controls the opening of the one or more valves at a certain frequency to create a periodic airflow, enabling the ventilation module 50 to provide periodic respiratory support to the patient. In conjunction with the above embodiments, when the second ventilation control device controls the opening of the one or more valves at a switching frequency of 50 times / minute or more, the ventilation module 50 can provide high-frequency ventilation to the patient. When the second ventilation control device controls the opening of the one or more valves at a switching frequency of 10-1500 bpm and the ventilation module 50 is connected to a jet accessory, the ventilation module 50 can provide jet ventilation to the patient.

[0107] In the above embodiment, a first flow sensor F1 for monitoring the flow rate of the oxygen branch 510 may be further provided in the oxygen branch 510. A second flow sensor F2 for monitoring the flow rate of the air branch 520 may also be provided in the air branch 520. These two flow sensors can effectively monitor the flow rates of oxygen and air.

[0108] A safety valve T6 for pressure relief is provided between the confluence node (black dot in FIG. 6 ) of the oxygen branch 510 and the air branch 520 and the output port 530, and at least one pressure sensor for monitoring pressure is also provided. The safety valve T6 can be specifically configured to connect the output port 530 to the exhaust port of the safety valve T6 when the pressure monitored by the pressure sensor exceeds a preset threshold, allowing the gas between the output port 530 and the safety valve T6 to be discharged through the exhaust port, thereby preventing the patient from suffering barotrauma. The safety valve T6 can also be configured to isolate the airway between the output port 530 and the confluence node when the pressure monitored by the pressure sensor exceeds a preset threshold. For example, the safety valve T6 is a three-way valve, with a first end connected to the output port 530, a second end connected to the confluence node, and a third end serving as the exhaust port. Under normal circumstances, the first end of the three-way valve is connected (communicated) to the second end, and both the first end and the exhaust port are disconnected. The pressure sensor outputs the monitored pressure to the second ventilation control device. The second ventilation control device determines whether the pressure exceeds a preset threshold. If so, it outputs a corresponding control signal to the three-way valve. Triggered by the control signal, the three-way valve disconnects the first end from the second end and connects (communicates) the first end to the exhaust port, thereby releasing excessively high-pressure gas and improving safety. The preset threshold can be set based on clinical experience or physician needs.

[0109] The anesthesia machine's human-machine interface also includes a display. The user can select a respiratory support mode through the human-machine interface. In this embodiment, each respiratory support mode corresponds to a ventilation mode; selecting a ventilation mode selects the respiratory support mode. There are various specific human-machine interaction methods, two of which are exemplified below.

[0110] In the first human-computer interaction mode, the anesthesia machine displays the first ventilation mode and the second ventilation mode on the display interface of the display (such as the main monitoring interface or the ventilation mode switching interface) for the user to select. Selecting the first ventilation mode means selecting the first respiratory support mode, and the first respiratory support mode provides periodic respiratory support for the ventilation module. Selecting the second ventilation mode means selecting the second respiratory support mode, and the second respiratory support mode provides anesthetic respiratory support for the patient. For example, a ventilation status display area and a ventilation mode switching area are provided on the same screen on the display interface of the display. The first ventilation mode and the second ventilation mode are displayed in the ventilation mode switching area for the user to select. After the user selects a respiratory support mode, the anesthesia machine provides the patient with corresponding respiratory support according to the selected respiratory support mode, and the ventilation status display area is used to display various preset ventilation status data when the anesthesia machine provides the patient with corresponding respiratory support according to the selected respiratory support mode. Among them, the anesthesia machine can simultaneously display the first ventilation mode and the second ventilation mode in the ventilation mode switching area for the user to choose. Considering that the main function of the anesthesia machine is for anesthesia, the second ventilation mode can also be displayed in the ventilation mode switching area while the first ventilation mode is hidden, which can avoid the doctor from mistakenly selecting the first ventilation mode during anesthesia.

[0111] If the user selects the first ventilation mode through the human-computer interaction device, that is, the respiratory support mode received by the human-computer interaction device is the first respiratory support mode, the anesthesia machine displays a control window of the first respiratory support mode on the display interface for the user to set the ventilation parameters of the first ventilation mode; and then based on the ventilation parameters set by the user, the ventilation module provides respiratory support for the patient according to the ventilation parameters set by the user.

[0112] If the user selects the second ventilation mode through the human-computer interaction device, that is, the respiratory support mode received by the human-computer interaction device is the second respiratory support mode, the anesthesia machine displays a control window of the second respiratory support mode on the display interface for the user to set the ventilation parameters of the second ventilation mode; and then based on the ventilation parameters set by the user, the anesthesia machine provides anesthetic breathing support for the patient.

[0113] Of course, the display interface can also support the user to simultaneously select the first ventilation mode and the second ventilation mode (corresponding to the third respiratory support mode). After the third respiratory support mode is selected, the control window of the first respiratory support mode and the control window of the second respiratory support mode are displayed on the display interface, so that based on the ventilation parameters set by the user in the control window of the first respiratory support mode, the ventilation module provides respiratory support for one patient, and based on the ventilation parameters set by the user in the control window of the second respiratory support mode, the anesthesia machine provides anesthetic breathing support for another patient.

[0114] In the second human-machine interaction mode, the anesthesia machine has at least two human-machine interaction devices: a first human-machine interaction device and a second human-machine interaction device. The anesthesia machine displays a control window for the first ventilation mode on the display interface of the first human-machine interaction device for the user to select the first ventilation mode and set the ventilation parameters of the first ventilation mode; and displays a control window for the second ventilation mode on the display interface of the second human-machine interaction device for the user to select the second ventilation mode and set the ventilation parameters of the second ventilation mode. After the first ventilation mode is selected, based on the ventilation parameters set by the user, the ventilation module provides respiratory support for the patient according to the ventilation parameters set by the user; after the second ventilation mode is selected, based on the ventilation parameters set by the user, the first ventilation control device provides anesthetic breathing support for the patient. The two ventilation modes are operated using two different human-machine interaction devices, which can better prevent mistakes and avoid misoperation, and also allow users to focus more on the operation.

[0115] When the respiratory support mode received by the human-computer interaction device is periodic respiratory support (first respiratory support mode), the display is used to output a prompt message to shut down the anesthetic delivery device 20 or output a prompt message to switch the patient's anesthesia mode, so as to prevent the anesthetic of the anesthetic delivery device 20 from being released into the environment instead of being provided to the patient through the respiratory circuit. When the respiratory support mode received by the human-computer interaction device is periodic respiratory support, the display can also be used to display a pressure waveform W (as shown in FIG9 ) for easy viewing and analysis by the user. The pressure in the pressure waveform W is monitored by a pressure sensor.

[0116] In this embodiment, when the anesthetic delivery device 20 is an electronic vaporizer, the anesthesia machine can also obtain the operating status of the electronic vaporizer. When the human-computer interaction device receives the respiratory support mode as periodic respiratory support, the anesthesia machine is further configured to determine whether the electronic vaporizer's current operating state is off, that is, whether the electronic vaporizer is turned off. Only after the electronic vaporizer is determined to be off does the anesthesia machine switch to the periodic respiratory support mode. The ventilation module 50 only performs periodic respiratory support after the electronic vaporizer is turned off, thereby improving the safety of the anesthesia machine.

[0117] Further referring to Figure 10, Figure 10 is a schematic diagram of the main monitoring interface on the display of the anesthesia machine. The main monitoring interface includes a ventilation mode switching area P1, and high-frequency jet ventilation is one of the ventilation modes (first ventilation mode) and is presented in the ventilation mode switching area P1 as a tab. When it is desired to use the anesthesia machine to provide periodic respiratory support, the "HFJV" icon in the ventilation mode switching area P1 can be selected and confirmed through the "SET MODE" icon to complete the selection of the periodic respiratory support mode. At this time, the ventilation module 50 can be controlled to start and provide periodic high-frequency jet ventilation to the patient. The pressure monitored during high-frequency jet ventilation will be displayed in the ventilation status display area (pressure waveform area) P2 of the main monitoring interface. When it is desired to use the anesthesia machine to provide periodic anesthetic breathing support, other ventilation mode icons (such as the second ventilation mode) in the ventilation mode switching area P1, such as the "VCV" icon, can be selected. At this time, the first ventilation control device 40 can control the breathing circuit to provide periodic anesthetic breathing support (second respiratory support mode) to the patient.

[0118] In some embodiments, when the human-computer interaction device receives any type of respiratory support mode, the instructions formed based on the same respiratory support mode can be transmitted to the first ventilation control device and the second ventilation control device respectively. The two ventilation control devices start or stop the corresponding respiratory support mode according to the received instructions. For example, when the respiratory support mode received by the human-computer interaction device is periodic respiratory support, the first ventilation control device 40 controls the respiratory circuit to stop outputting the second gas with anesthetic to the outside and stops the periodic anesthesia respiratory support for the patient. The second ventilation control device synchronously controls the ventilation module 50 (for example, the gas delivery branch) to start periodically providing the first gas to the patient and perform high-frequency / jet ventilation.

[0119] In the above embodiment, the second ventilation control device and the first ventilation control device 40 are two independent ventilation control devices; of course, in other embodiments, the second ventilation control device and the first ventilation control device 40 can also be the same ventilation control device, that is, the control function of the ventilation module 50 can be further integrated with the first ventilation control device. That is, the first ventilation control device also has the function of the above-mentioned second ventilation control device, which is used to control the gas delivery branch to provide periodic respiratory support to the patient. In specific operation, after the instruction for selecting the respiratory support mode received by the human-computer interaction device is transmitted to the first ventilation control device, the first ventilation control device decides whether to control the breathing circuit to provide periodic anesthetic respiratory support and / or control the gas delivery branch to provide periodic respiratory support to the patient.

[0120] 6-8 , the pressure sensor may be disposed between the second control valve T5 and the output port 530 . The safety valve T6 may also be disposed between the second control valve T5 and the output port 530 .

[0121] Multiple pressure sensors can be provided. This embodiment takes the first pressure sensor P1 and the second pressure sensor P2 as an example for explanation. The pressure monitored by the first pressure sensor P1 is used to trigger the safety valve T6, and the pressure monitored by the second pressure sensor P2 is used to display the waveform.

[0122] Specifically, the first pressure sensor P1 is located near the safety valve T6. The first pressure sensor P1 monitors the pressure of the high-frequency gas. When the pressure value monitored by the first pressure sensor P1 is found to be abnormal, the safety valve T6 is switched to isolate the patient's airway from the airway of the ventilation module 50. At the same time, the gas at the patient's end can be discharged through the safety valve T6, preventing barotrauma at the patient's end.

[0123] The second pressure sensor P2 is located near the patient end, that is, near the output port 530. A pressure sampling port is provided at the near-patient end, connected to the second pressure sensor P2 of the ventilation module 50 via a pressure sampling conduit. The display thus displays the pressure oscillation waveform W captured by the second pressure sensor P2. Of course, in some embodiments, the operation of the safety valve T6 can also be triggered by the second pressure sensor P2 near the patient end, and the pressure waveform W displayed on the display can also be collected by the first pressure sensor P1 near the safety valve T6.

[0124] The ventilation module 50 can implement high-frequency / jet ventilation by controlling the switching frequency of the second control valve T5. The specific process of high-frequency / jet ventilation has been described in detail above. By adjusting the frequency (i.e., the air delivery frequency) of high-frequency / jet ventilation performed by the second control valve T5, the ventilation module 50 can achieve ventilation with different ventilation frequencies. For example, when the ventilation module 50 implements jet ventilation, if the ventilation frequency of the jet ventilation device is lowered, the jet ventilation device becomes a low-frequency ventilation device, which can be used in conjunction with appropriate accessories (such as nasal plugs, nasal masks, face masks, etc.).

[0125] As shown in Figures 3 and 4, the anesthesia machine also includes a flow monitoring device 60, which is used to control (regulate) the flow of the first gas. The flow monitoring device 60 can be mechanical or fully electronic. The flow monitoring device 60 can also be used to detect the flow of the first gas. There are various ways to connect the flow monitoring device 60, the anesthetic delivery device 20, and the ventilation module 50.

[0126] For example, in the embodiment shown in FIG3 , the gas source module 10 is connected to the anesthetic delivery device 20 via a flow monitoring device 60, wherein the ventilation module 50 is connected to the gas source module 10; specifically, in FIG3 , the gas source interface is connected to the vaporizer 210 via the flow monitoring device 60. In this way, the gas branch where the ventilation module 50 is located and the anesthesia branch (such as the flow monitoring device 60, the anesthetic delivery device 20, and the breathing circuit 30 in FIG3 ) share the first gas provided by the gas source module 10, allowing the ventilation module 50 to be better integrated with the anesthesia machine in terms of gas circuit and control. Of course, in some embodiments, the anesthesia machine may also have two gas source modules 10: a first gas source module and a second gas source module; the structures and functions of the two gas source modules are described above; the second gas source module is connected to the anesthetic delivery device 20 via the flow monitoring device 60 to provide the first gas to the anesthesia branch; the first gas source module is connected to the ventilation module 50 to provide the first gas to the ventilation module 50; in this embodiment, although the anesthesia branch and the ventilation module 50 both use the first gas, the gas circuits are independent of each other. The first gas may also be humidified or otherwise treated before being delivered to the ventilation module 50. That is, the first gas described in this application includes both the gas output by the gas source module and the gas humidified or otherwise treated at the output port of the gas source module.

[0127] For another example, in the embodiment shown in FIG4 , the anesthesia machine further includes a three-way valve T12. The three-way valve T12 includes a first port 1 connected to the flow monitoring device 60, a second port 2 connected to the anesthetic delivery device 20, and a third port 3 connected to the ventilation module 50. Specifically, the gas source module 10 is connected to the input of the flow monitoring device 60. Under the control of the three-way valve T12, the output of the flow monitoring device 60 can be connected to either the anesthetic delivery device 20 or the ventilation module 50. Specifically, the three-way valve T12 allows the flow monitoring device 60 to selectively connect to either the anesthetic delivery device 20 or the ventilation module 50.

[0128] The gas source module 10 may also include a nitrous oxide unit for providing nitrous oxide. The nitrous oxide unit may be a nitrous oxide interface for connecting to an external nitrous oxide source, such as a nitrous oxide delivery pipeline or nitrous oxide bottle in a hospital. The flow monitoring device 60 may have three input interfaces, connected to an oxygen interface, an air interface, and a nitrous oxide interface, respectively. Figure 11 corresponds to the flow monitoring device 60 of the embodiment of Figure 3. The flow monitoring device 60 includes a third switch valve T7, a fourth switch valve T8, a fifth switch valve T9, a fourth control valve T10, a fifth control valve T11, a third flow sensor F3, and a fourth flow sensor F4. One end of the third switch valve T7 is connected to the oxygen interface, and the other end of the third switch valve T7 is connected to the input end of the third flow sensor F3 via the fourth control valve T10. One end of the fourth switch valve T8 is connected to the air interface, and one end of the fifth switch valve T9 is connected to the nitrous oxide interface. The other end of the fourth switch valve T8 and the other end of the fifth switch valve T9 converge and are connected to the input end of the fourth flow sensor F4 via the fifth control valve T11. The output of the third flow sensor F3 and the output of the fourth flow sensor F4 merge and are then connected to the evaporator 210. The third on-off valve T7, the fourth on-off valve T8, and the fifth on-off valve T9 are all used to control the on-off of the gas circuit. The fourth control valve T10 and the fifth control valve T11 are used for flow control.

[0129] Figure 12 corresponds to the flow monitoring device 60 of the embodiment of Figure 4. The output end of the third flow sensor F3 and the output end of the fourth flow sensor F4 are connected to the input end 1 of the three-way valve T12 after merging. The three-way valve T12 has a first output end 2 and a second output end 3. Its first output end 2 is connected to the evaporator 210, and its second output end 3 is connected to the ventilation module (such as the high-frequency ventilation device 501). The three-way valve T12 has two states: one state in which its input end 1 is connected to the first output end 2, and the other state in which its input end 1 is connected to the second output end 3. In other words, by controlling the three-way valve T12, it is possible to choose whether to output gas to the evaporator 210 or the high-frequency ventilation device 501. The third on-off valve T7, the fourth on-off valve T8, and the fifth on-off valve T9 are all used to control the on-off of the gas circuit. The fourth control valve T10 and the fifth control valve T11 are used for flow control.

[0130] In one embodiment shown in FIG4 , the ventilation module 50 may include a gas delivery branch and an output port, but the gas delivery branch does not include a second control valve T5. Instead, the fourth control valve T10 and the fifth control valve T11 are shared with the flow monitoring device 60. The fourth control valve T10 and the fifth control valve T11 are both used for periodic ventilation control, that is, the functions of the fourth control valve T10 and the fifth control valve T11 can be the same as those of the second control valve described above. For example, the fourth control valve T10 and the fifth control valve T11 can be controlled to switch the flow rate at a preset frequency, so that the pulse frequency of the airflow at the first port 1 of the three-way valve T12 is greater than or equal to 3 Hz or between 50-1500 bpm. Specifically, taking FIG12 as an example, in an alternative embodiment, the first port 1 of the three-way valve T12 is connected to the flow monitoring device 60, the second port 2 of the three-way valve T12 is connected to the anesthetic delivery device 20, and the third port 3 of the three-way valve T12 is connected to the ventilation module 50. When the respiratory support mode that anesthesia machine receives is periodic respiratory support, the first port 1 and the third port 3 of three-way valve T12 are conducted, and the fourth control valve T10 and the fifth control valve T11 are communicated with ventilation module 50, and the fourth control valve T10 and the fifth control valve T11 carry out flow switching by preset frequency so that ventilation module 50 ventilates patient with the first ventilation frequency.The first ventilation frequency, for example, can be greater than or equal to 50bpm, greater than or equal to 3Hz, or between 50-1500bpm.Like this, by the opening size switching of these two control valves T10 and T11, the mixed gas of oxygen and air (also can be the mixed gas of oxygen, air and laughing gas) is formed periodic air flow, the high air flow of this periodicity is transmitted to output port along gas delivery branch, if the output port 530 of ventilation module 50 connects injection attachment, periodic air flow carries out injection ventilation to patient after injection attachment. When the respiratory support mode received by the anesthesia machine is periodic anesthesia respiratory support, the first port 1 and the second port 2 are connected, the fourth control valve T10 and the fifth control valve T11 are connected to the anesthetic delivery device 20, and the fourth control valve T10 and the fifth control valve T11 provide a first gas to the anesthetic delivery device at a second ventilation frequency, so that the first gas is mixed with the anesthetic at the second ventilation frequency to obtain a second gas, so that the breathing circuit ventilates the patient. The first ventilation frequency is greater than the second ventilation frequency. The second ventilation frequency can be 0, that is, the fourth control valve T10 and the fifth control valve T11 can be opened.

[0131] It can be understood that in the embodiment shown in Figure 4, gas can be drawn out from the flow rear end of the flow monitoring device 60 to the ventilation module. Compared with the scheme of Figure 3, the ventilation module of the scheme of Figure 4 borrows (shares) some components (T10 and T11) of the flow monitoring device 60, which greatly simplifies the structure of the ventilation module.

[0132] As can be seen from the above content, the first gas is at least an oxygen-containing gas, and the anesthesia machine may further include an auxiliary gas supply module. The auxiliary gas supply module is used to receive the first gas output by the gas source module 10, and use the first gas to provide respiratory support to the patient at a flow rate of 20-80 liters / minute. The respiratory support provided by the auxiliary gas supply module is non-periodic respiratory support. Non-periodic respiratory support refers to continuous gas delivery to the patient. This method is actually high-flow oxygen therapy. In this way, the anesthesia machine can provide high-flow oxygen therapy to the patient when anesthesia is not needed, and has a wide range of applications.

[0133] In some embodiments, an anesthesia machine may include a mainframe having a housing, and at least a portion of a ventilation module may be disposed within a housing formed by the housing, forming an integrated unit with the anesthesia machine. Specifically, at least a portion of the ventilation module is integrated within the anesthesia machine. For example, a second ventilation control device included in the ventilation module is built into the mainframe and communicatively coupled to a human-machine interface device of the anesthesia machine.

[0134] The anesthesia machine may also include a carbon dioxide monitoring module. The carbon dioxide monitoring module is used to detect the patient's end-tidal carbon dioxide concentration when the first ventilation control device provides anesthesia breathing support for the patient, and then display it on the display interface, and / or, when the ventilation module provides respiratory support for the patient, detect the patient's end-tidal carbon dioxide concentration and then display it on the display interface. Anesthesia machines usually have a carbon dioxide monitoring module. The present invention integrates the ventilation module into the anesthesia machine. When providing respiratory support to the patient, the ventilation module can use the carbon dioxide monitoring module of the anesthesia machine to detect the end-tidal carbon dioxide concentration. The ventilation module does not need to have its own carbon dioxide sensor, which simplifies the structure and improves the integration.

[0135] The anesthesia machine of the present invention, due to the integrated ventilation module, can provide the following ventilation control: when the received respiratory support mode is periodic anesthesia respiratory support (second respiratory support mode), the first gas is controlled to be mixed with the anesthetic to obtain the second gas, the second gas is controlled to enter the breathing circuit of the anesthesia machine, and the breathing circuit is controlled to periodically output the second gas to achieve periodic anesthesia respiratory support; when the received respiratory support mode is periodic respiratory support (first respiratory support mode), the first gas is controlled to enter the ventilation module of the anesthesia machine, and the ventilation module is controlled to periodically output the first gas to achieve periodic respiratory support; wherein, periodic respiratory support includes providing gas delivery to the patient at a variable flow rate (such as two flow rates, one large and one small) during a respiratory cycle. For example, when the user wishes to provide jet ventilation through the anesthesia machine, the ventilation module can be controlled to output the periodic first gas at a certain frequency, and the periodic first gas can complete the jet ventilation after passing through the jet attachment.

[0136] The present invention creatively integrates the jet ventilation (JV) function into a universal anesthesia machine, so that the anesthesia machine can be used directly to support applications such as pharyngeal, tracheal, bronchial or lung surgery where endotracheal intubation and ventilation are not possible. For example, when using the anesthesia machine provided by the present invention, the doctor places the spray needle or nozzle into the appropriate position of the pharynx or trachea and uses the anesthesia machine to perform jet ventilation and respiratory support. On the one hand, the diameter of the spray needle or nozzle is very small, and there is enough space for the doctor to observe and perform laryngoscopy; on the other hand, the characteristics of jet ventilation, especially the characteristics of high-frequency (above 50bpm, above 3Hz, or 50-1500bpm) jet ventilation, are that the patient's lung pressure changes very little between inspiration and expiration, and will not cause large fluctuations in lung breathing, which undoubtedly provides convenience for single-lung ventilation or lung surgery. It is easy to understand that jet ventilation, because it uses a needle or nozzle, does not form a sealed connection between the anesthesia machine's airway system and the patient's respiratory system. Therefore, this type of ventilation cannot be used to simultaneously inject anesthetics through the needle or nozzle, otherwise it will cause anesthetic leakage. In this case, anesthesia must be administered through intravenous injection of anesthetic drugs.

[0137] The present invention integrates ventilation modules such as jet ventilation functions into a universal anesthesia machine, and integrates boards, display screens, etc. into one device, which brings convenience to the management of operating room equipment and allows more hospitals to perform anesthesia surgeries such as pharyngeal, tracheal, bronchial or lung surgeries that cannot be performed with endotracheal intubation and ventilation, thus having great clinical value.

[0138] As shown in Figure 14, the present invention also provides an anesthesia machine, including: an anesthesia branch 0, a ventilation module 50 and a shell. The anesthesia branch 0 is mainly used for anesthesia, and the ventilation module 50 is mainly used for ventilation. The output ports of the two are different, and the output gases are also different. The anesthesia branch 0 is used to receive a first gas, mix the first gas with an anesthetic to obtain a second gas, and use the second gas to provide anesthesia breathing support to the patient at a third ventilation frequency. The anesthesia branch 0 specifically delivers the second gas to the patient through its output port. The ventilation module 50 is used to receive the first gas, and use the first gas to provide breathing support to the patient at a first ventilation frequency. The ventilation module 50 includes: a gas delivery branch and an output port. The gas delivery branch is used to receive the first gas. At least part of the ventilation module 50 is arranged in the accommodation space formed by the shell, forming a whole with the anesthesia machine.

[0139] The ventilation module 50 may be the ventilation module 50 in the above-described embodiment. The ventilation module 50 may further include a second control valve, which is used to form the first gas in the gas delivery branch into an airflow with a first ventilation frequency. For details, see the above-described embodiment, which will not be described in detail here. Of course, two control valves may also be used to replace the second control valve. That is, in some embodiments, the ventilation module 50 may further include a first control valve and a third control valve, which together form the first gas in the gas delivery branch into an airflow with a first ventilation frequency. For details, see the above-described embodiment, which will not be described in detail here.

[0140] The anesthesia branch 0 may include the anesthetic delivery device 20 and the breathing circuit 30 in the above-mentioned embodiment, and may further include a flow monitoring device 60, etc. For details, please refer to the above-mentioned embodiment and will not be described in detail here. The anesthesia machine may also include an air source module 10. The anesthesia branch 0 may share the air source module 10 with the ventilation module 50, such as sharing the above-mentioned various air source interfaces, that is, the anesthesia branch 0 and the ventilation module 50 are connected or connected to the air source interface together; of course, the anesthesia branch 0 and the ventilation module 50 may also be connected to different air source modules 10 respectively, so that the air circuits are not connected.

[0141] The present invention also provides an anesthesia machine, comprising: a flow monitoring device, a breathing circuit, a first ventilation control device, and a human-computer interaction device. The flow monitoring device is used to adjust the flow of a third gas; the third gas after the flow is adjusted by the flow monitoring device is delivered to an anesthetic delivery device to be mixed with the anesthetic to obtain a second gas. The flow monitoring device is the same as the flow monitoring device of the above embodiment, except that it adjusts the flow of the third gas instead of the first gas, so it will not be described in detail here. Similarly, the anesthetic delivery device is the same as the above embodiment, except that the first gas is changed to the third gas. The breathing circuit is used to receive the second gas and deliver the second gas to the patient. The function of the breathing circuit is the same as that of the breathing circuit in the above embodiment, so it will not be described in detail here.

[0142] The first ventilation control device is used to control the breathing circuit to deliver the second gas to the patient, thereby providing anesthetic breathing support for the patient. Similarly, the functions of the first ventilation control device are the same as those of the first ventilation control device in the above-mentioned embodiment and are not further described here. The human-computer interaction device is used to receive user input regarding the respiratory support method provided by the anesthesia machine to the patient. Similarly, the functions of the human-computer interaction device are the same as those of the human-computer interaction device in the above-mentioned embodiment and are not further described here.

[0143] The anesthesia machine also includes a ventilation module. The ventilation module is configured to receive a first gas and provide respiratory support to the patient using the first gas at a first ventilation frequency for multiple respiratory cycles. The ventilation module delivers the first gas to the patient at a variable flow rate within a single respiratory cycle. Similarly, the functions of the ventilation module are the same as those of the ventilation module in the aforementioned embodiment and are not further described here.

[0144] As shown in FIG15 , the process of ventilation control by the anesthesia machine may include the following steps:

[0145] Step 1: The anesthesia machine receives a respiratory support mode provided by the anesthesia machine input by a user through a human-computer interaction device.

[0146] Step 2. When the received respiratory support mode is to provide anesthetic respiratory support, the flow monitoring device receives the third gas provided by the gas source module, controls the third gas to be mixed with the anesthetic to obtain the second gas, and the third gas after the flow rate is adjusted by the flow monitoring device is delivered to an anesthetic delivery device. The third gas is mixed with the anesthetic in the anesthetic delivery device to obtain the second gas, and then the first ventilation control device controls the second gas to enter the breathing circuit of the anesthesia machine, and controls the breathing circuit to output the second gas, thereby providing anesthetic respiratory support for the patient.

[0147] Step 3: When the received respiratory support mode is respiratory support provided by the ventilation module, the ventilation module receives the first gas and uses the first gas at a non-constant flow rate to provide respiratory support for the patient in a single respiratory cycle.

[0148] Of course, there are also breathing support methods in which steps 2 and 3 are performed simultaneously. The specific process is shown in the above embodiment and will not be described in detail here.

[0149] The third gas can be the same as the first gas, and the third gas and the first gas can originate from the same gas source module or from different gas source modules. The specific solution is the solution in the above embodiment. In this embodiment, the third gas is different from the first gas, and the third gas and the first gas have different components. The third gas and the first gas have at least some different gas sources, for example, the third gas contains nitrous oxide, while the first gas does not. In this embodiment, the third gas and the first gas originate from different gas source modules, and the gas paths between the third gas and the first gas are not connected.

[0150] The aforementioned anesthesia machines all have integrated ventilation modules. Of course, the ventilation module can also be controlled remotely from the anesthesia machine rather than integrated into the machine. For example, as shown in Figure 16 , an anesthesia machine includes: a gas source module 10, a breathing circuit 30, a first ventilation control device 40, a human-machine interface device, and a communication module 80.

[0151] The gas source module 10 is connected to an anesthetic delivery device. For example, the gas source module 10 includes a gas source interface. One end of the gas source interface is connected to the gas source, and the other end is connected to the anesthetic delivery device 20. Specifically, the connection with the anesthetic delivery device 20 can be through a flow monitoring device 60. The anesthetic delivery device 20 is used to mix the third gas provided by the gas source with the anesthetic and deliver the resulting second gas to the breathing circuit 30.

[0152] The breathing circuit 30 is used to deliver the second gas to the patient. The first ventilation control device 40 is used to control the breathing circuit 30 to deliver the second gas to the patient, thereby providing anesthetic breathing support. The human-machine interface device is used to receive user input indicating the respiratory support method provided by the anesthesia machine to the patient. The functions of the gas source module 10, flow monitoring device 60, anesthetic delivery device 20, breathing circuit 30, first ventilation control device 40, and human-machine interface device are the same as those in the above embodiment and are not further described here.

[0153] The communication module 80 is used to communicate with an external ventilation device, either by wired communication or wireless communication. The ventilation device is used to provide respiratory support to the patient using a first gas at a preset first ventilation frequency; the first ventilation frequency is not 0. That is, the function of the ventilation device of this embodiment is the same as that of the ventilation module of the above embodiment, except that the ventilation device is independent of the anesthesia machine. The ventilation device can specifically be a high-frequency ventilation device (such as a high-frequency jet ventilation device), a low-frequency ventilation device, etc. Its specific functions are described in the ventilation module of the above embodiment and will not be repeated here.

[0154] The anesthesia machine also provides anesthetic breathing support to the patient and / or controls the ventilation device via the communication module 80 based on the respiratory support mode received by the human-machine interaction device, so that the ventilation device provides respiratory support to the patient. In embodiments where the ventilation module is built into the anesthesia machine housing, the anesthesia machine directly controls the internal ventilation module to provide respiratory support to the patient. In this embodiment, the anesthesia machine controls the external ventilation device via the communication module 80 to provide respiratory support to the patient. Otherwise, the ventilation module and the ventilation device have the same function, i.e., both provide respiratory support to the patient in the same manner using the first gas at the first ventilation frequency.

[0155] The same anesthesia machine can have multiple ventilation modes, and there can be multiple human-machine interaction devices for selecting ventilation modes. Three of them are given below for illustration.

[0156] In the first human-computer interaction mode, the anesthesia machine displays the first ventilation mode and the second ventilation mode on the display interface of the display of the human-computer interaction device (such as the main monitoring interface or the mode switching interface) for the user to select. Selecting the first ventilation mode means selecting the first respiratory support mode, and the first respiratory support mode provides respiratory support for controlling the ventilation device. Selecting the second ventilation mode means selecting the second respiratory support mode, and the second respiratory support mode provides anesthetic respiratory support for the patient. For example, a ventilation status display area and a ventilation mode switching area are provided on the same screen on the display interface of the monitor. The first ventilation mode and the second ventilation mode are displayed in the ventilation mode switching area for the user to select. Among them, the anesthesia machine can simultaneously display the first ventilation mode and the second ventilation mode in the ventilation mode switching area for the user to select. Considering that the main function of the anesthesia machine is for anesthesia, the second ventilation mode can also be displayed in the ventilation mode switching area while the first ventilation mode is hidden, which can prevent the doctor from mistakenly selecting the first ventilation mode during anesthesia.

[0157] If the user selects the first ventilation mode through the human-computer interaction device, that is, the respiratory support mode received by the human-computer interaction device is the first respiratory support mode, the anesthesia machine displays a control window of the first respiratory support mode in the ventilation mode switching area of ​​the display interface for the user to set the ventilation parameters of the first respiratory support mode; and then, based on the ventilation parameters set by the user, the ventilation device is controlled through the communication module 80, so that the ventilation device provides respiratory support to the patient according to the ventilation parameters set by the user.

[0158] If the user selects the second ventilation mode through the human-computer interaction device, that is, the respiratory support mode received by the human-computer interaction device is the second respiratory support mode, the anesthesia machine displays a control window of the second respiratory support mode in the ventilation mode switching area of ​​the display interface for the user to set the ventilation parameters of the second respiratory support mode; and then based on the ventilation parameters set by the user, the anesthesia machine provides anesthetic breathing support for the patient.

[0159] Of course, the display interface can also support simultaneous selection of the first ventilation mode and the second ventilation mode (corresponding to the third respiratory support mode). After the third respiratory support mode is selected, the control window of the first respiratory support mode and the control window of the second respiratory support mode are displayed on the display interface, so that based on the ventilation parameters set by the user in the control window of the first respiratory support mode, the ventilation device is controlled through the communication module 80 so that the ventilation device provides respiratory support for the patient according to the ventilation parameters set by the user, and based on the ventilation parameters set by the user in the control window of the second respiratory support mode, the anesthesia machine provides anesthetic breathing support for another patient.

[0160] In the first human-computer interaction mode, the anesthesia machine displays the ventilation status display area (i.e., the pressure waveform area) and the ventilation mode switching area on the same screen on the main monitoring interface, providing a flat ventilation mode switching layout design. In this interactive mode, the first respiratory support mode and the second respiratory support mode are both integrated in the ventilation mode switching area. For the user of the anesthesia machine, remote control of the ventilation device becomes a special ventilation mode, which can better adapt to the function expansion of the anesthesia machine without changing the daily ventilation mode switching operating habits. For the main monitoring interface, although an alternative respiratory support mode has been added, the display area of ​​the ventilation status display area has not been compressed.

[0161] In the second human-machine interaction mode, the anesthesia machine has at least two human-machine interaction devices: a first human-machine interaction device and a second human-machine interaction device. The anesthesia machine displays a control window of the first respiratory support mode on the display interface of the first human-machine interaction device for the user to select the first respiratory support mode and set the ventilation parameters of the first respiratory support mode; and displays a control window of the second respiratory support mode on the display interface of the second human-machine interaction device for the user to select the second respiratory support mode and set the ventilation parameters of the second respiratory support mode. After the first respiratory support mode is selected, based on the ventilation parameters set by the user, the anesthesia machine controls the ventilation device through the communication module 80, so that the ventilation device provides respiratory support to the patient according to the ventilation parameters set by the user. After the second respiratory support mode is selected, based on the ventilation parameters set by the user, the anesthesia machine provides anesthetic respiratory support to the patient. The two ventilation modes are operated with two different human-machine interaction devices, which can better prevent mistakes and avoid misoperation, and also allow users to focus more on the operation.

[0162] Considering that the anesthesia machine does not necessarily need to control the ventilation device every time it is used, the anesthesia machine can display the first ventilation mode on the display interface of the first human-machine interface device, allowing the user to activate the control window for the first respiratory support mode, only after the anesthesia machine is communicatively connected to the ventilation device via the communication module 80. In other words, only after the anesthesia machine is communicatively connected to the ventilation device can the anesthesia machine be controlled to display the control window for the first respiratory support mode on one of its displays, thereby allowing the user to control the ventilation device, which is very convenient.

[0163] In a third human-machine interaction mode, during daily use, the anesthesia machine displays an operating interface on the display of its human-machine interface device, facilitating routine user operation of the anesthesia machine. For example, the operating interface allows the user to select a second respiratory support mode and set ventilation parameters for the second respiratory support mode. After the second respiratory support mode is selected, the anesthesia machine activates the first ventilation control device to provide anesthetic breathing support to the patient.

[0164] The display interface of the anesthesia machine's human-machine interface also displays an operating interface for the ventilation device, allowing the user to directly operate the ventilation device through this interface. For example, the operating interface for the ventilation device allows the user to select a first respiratory support mode and set ventilation parameters for the first respiratory support mode. After the first respiratory support mode is selected, the anesthesia machine controls the ventilation device via the communication module 80, causing the ventilation device to provide respiratory support to the patient.

[0165] Similarly, the anesthesia machine may display the operation interface of the ventilation device on the operation interface of the anesthesia machine only after the anesthesia machine is connected to the ventilation device through the communication module 80 .

[0166] Since the difference between the embodiment shown in Figure 16 and the embodiment shown in Figures 2-15 lies in the remote control of the ventilation device, and the ventilation device provides respiratory support to the patient in the same way as the aforementioned ventilation module provides respiratory support to the patient, the details can be found in the aforementioned embodiment and will not be repeated here.

[0167] This document is described with reference to various exemplary embodiments. However, those skilled in the art will recognize that changes and modifications may be made to the exemplary embodiments without departing from the scope of this document. For example, the various operational steps and components used to perform the operational steps may be implemented in different ways (e.g., one or more steps may be deleted, modified, or incorporated into other steps) depending on the specific application or considering any number of cost functions associated with the operation of the system.

[0168] Additionally, as will be appreciated by those skilled in the art, the principles of this disclosure may be embodied in a computer program product on a computer-readable storage medium pre-loaded with computer-readable program code. Any tangible, non-transitory computer-readable storage medium may be used, including magnetic storage devices (hard disks, floppy disks, etc.), optical storage devices (CD-ROMs, DVDs, Blu-ray discs, etc.), flash memory, and / or the like. These computer program instructions may be loaded onto a general-purpose computer, a special-purpose computer, or other programmable data processing device to form a machine, such that the instructions executed on the computer or other programmable data processing device can generate a device that implements a specified function. These computer program instructions may also be stored in a computer-readable memory, which can instruct the computer or other programmable data processing device to operate in a specific manner, such that the instructions stored in the computer-readable memory can form an article of manufacture that includes an implementation device that implements the specified function. The computer program instructions may also be loaded onto a computer or other programmable data processing device, causing the computer or other programmable device to execute a series of operational steps to produce a computer-implemented process, such that the instructions executed on the computer or other programmable device provide the steps for implementing the specified function.

[0169] Although the principles of this invention have been shown in various embodiments, many modifications of structure, arrangement, proportion, elements, materials and components that are particularly suitable for specific environments and operational requirements can be used without departing from the principles and scope of this invention. The above modifications and other changes or amendments are intended to be included within the scope of this invention.

[0170] The foregoing detailed description has been described with reference to various embodiments. However, those skilled in the art will recognize that various modifications and changes can be made without departing from the scope of this disclosure. Therefore, the present disclosure will be considered in an illustrative rather than a restrictive sense, and all such modifications will be included within its scope. Similarly, the advantages, other advantages and solutions to the problems of the various embodiments have been described above. However, the benefits, advantages, solutions to the problems and any elements that can produce these, or make them more specific, should not be interpreted as critical, required or necessary. The term "comprising" and any other variants used in this article are all non-exclusive inclusions, so that a process, method, article or device that includes a list of elements includes not only these elements, but also other elements that are not explicitly listed or do not belong to the process, method, system, article or device. In addition, the term "coupled" and any other variants used in this article refer to physical connections, electrical connections, magnetic connections, optical connections, communication connections, functional connections and / or any other connections.

[0171] Those skilled in the art will recognize that many changes can be made to the details of the above embodiments without departing from the basic principles of the invention. Therefore, the scope of the invention should be determined from the following claims.

Claims

1. An anesthesia machine, comprising: housing, flow monitoring device, breathing circuit, first ventilation control device, and human-computer interaction device; The flow monitoring device is used to adjust the flow of the first gas; The first gas after the flow rate is adjusted by the flow monitoring device is delivered to an anesthetic delivery device to be mixed with the anesthetic provided by the anesthetic delivery device to obtain the second gas; The breathing circuit is configured to receive the second gas and deliver the second gas to the patient; The first ventilation control device is used to control the breathing circuit to deliver the second gas to the patient, thereby providing anesthetic breathing support for the patient; The human-computer interaction device is used to receive a user input of a respiratory support mode provided by the anesthesia machine to the patient; It is characterized by further comprising: a ventilation module for receiving a first gas to provide respiratory support to a patient using the first gas at a first ventilation frequency; at least a portion of the ventilation module is disposed in the accommodation space formed by the housing to form an integral unit with the anesthesia machine; The anesthesia machine also provides anesthesia breathing support and / or breathing support for the patient according to the breathing support mode received by the human-computer interaction device.

2. An anesthesia machine, comprising: Flow monitoring device, breathing circuit, first ventilation control device and human-computer interaction device; The flow monitoring device is used to adjust the flow of the third gas; The third gas after the flow rate is adjusted by the flow monitoring device is delivered to an anesthetic delivery device to be mixed with the anesthetic to obtain the second gas; The breathing circuit is configured to receive the second gas and deliver the second gas to the patient; The first ventilation control device is used to control the breathing circuit to deliver the second gas to the patient, thereby providing anesthetic breathing support for the patient; The human-computer interaction device is used to receive a user input of a respiratory support mode provided by the anesthesia machine to the patient; It is characterized by further comprising: a ventilation module configured to receive a first gas and provide respiratory support to a patient for a plurality of respiratory cycles using the first gas at a first ventilation frequency; wherein the ventilation module delivers the first gas to the patient at a variable flow rate within a single respiratory cycle; The anesthesia machine also provides anesthesia breathing support and / or breathing support for the patient according to the breathing support mode received by the human-computer interaction device.

3. An anesthesia machine, characterized in that: include: an anesthesia branch, configured to receive a first gas, mix the first gas with an anesthetic to obtain a second gas, and use the second gas to provide anesthesia breathing support to a patient at a third ventilation rate; A ventilation module, configured to receive a first gas to provide respiratory support to a patient using the first gas at a first ventilation frequency; the ventilation module comprising: a gas delivery branch and an output port; The gas delivery branch is used to receive the first gas; The ventilation module further includes a second control valve, which is used to form the first gas in the gas delivery branch into a gas flow at a first ventilation frequency; or the ventilation module further includes a first control valve and a third control valve, which together form the first gas in the gas delivery branch into a gas flow at the first ventilation frequency; The output port is used to output the airflow of the first ventilation frequency; The housing includes at least a portion of the ventilation module disposed in a receiving space formed by the housing, and the ventilation module forms a whole with the anesthesia machine.

4. The anesthesia machine according to claim 3, wherein: The first ventilation frequency and the third ventilation frequency are both greater than zero.

5. The anesthesia machine according to any one of claims 1 to 3, characterized in that: The first ventilation frequency is not less than 50 times / minute; the ventilation module includes a high-frequency ventilation device, which is used to ventilate the patient at a ventilation frequency of at least 50 times / minute, thereby providing respiratory support for the patient.

6. The anesthesia machine according to claim 5, wherein: The high-frequency ventilation device includes a gas delivery branch, a second control valve and an output port. The high-frequency ventilation device receives the first gas through the gas delivery branch. The second control valve is arranged in the gas delivery branch and is controlled to switch the flow rate at a switching frequency of at least 50 times / minute so that the first gas output from the output port forms a high-frequency airflow.

7. The anesthesia machine according to claim 5, wherein: It also includes a jet accessory connected to the high-frequency ventilation device, wherein the jet accessory receives the first gas output by the high-frequency ventilation device and outputs the first gas in the form of a high-frequency jet airflow.

8. The anesthesia machine according to any one of claims 1 to 7, characterized in that: Also included is a gas source module for providing a first gas; the gas source module includes an oxygen unit, and the first gas includes oxygen provided by the oxygen unit; The ventilation module includes: an oxygen branch, a second control valve and an output port; the oxygen unit is connected to the output port through the oxygen branch, and the second control valve is arranged in the oxygen branch to control the oxygen flow of the oxygen branch and form the oxygen output from the output port into a high-frequency airflow.

9. The anesthesia machine according to any one of claims 1 to 7, characterized in that: Also included is a gas source module for providing a first gas; the gas source module includes an air unit, and the first gas includes air provided by the air unit; The ventilation module includes: an air branch, a second control valve and an output port; the air unit is connected to the output port through the air branch, and the second control valve is arranged in the air branch to control the air flow of the air branch and form a high-frequency airflow of the air output from the output port.

10. The anesthesia machine according to any one of claims 1 to 7, characterized in that: Also included is a gas source module for providing a first gas; the gas source module includes an oxygen unit for providing oxygen and an air unit for providing air, the first gas includes oxygen provided by the oxygen unit and air provided by the air unit; The ventilation module includes: an oxygen branch, an air branch and an output port; the oxygen branch is connected to the oxygen unit, and the air branch is connected to the air unit; the oxygen branch and the air branch are connected to the output port after merging; wherein, a first control valve is provided in the oxygen branch, and the first control valve is used to control the oxygen flow rate of the oxygen branch and form the oxygen in the oxygen branch into a high-frequency airflow; the air branch is provided with a third control valve, and the third control valve is used to control the air flow rate of the air branch and form the air in the air branch into a high-frequency airflow.

11. The anesthesia machine according to any one of claims 1 to 7, characterized in that: Also included is a gas source module for providing a first gas; the gas source module includes an oxygen unit for providing oxygen and an air unit for providing air, the first gas includes oxygen provided by the oxygen unit and air provided by the air unit; The ventilation module includes: an oxygen branch, an air branch, a second control valve and an output port; the oxygen branch is connected to the oxygen unit, and the air branch is connected to the air unit; the oxygen branch and the air branch are connected to the output port through the second control valve after converging; wherein, a first control valve is provided in the oxygen branch, and a third control valve is provided in the air branch, the first control valve is used to control the oxygen flow of the oxygen branch, the third control valve is used to control the air flow of the air branch, and the second control valve is used to form a high-frequency airflow from the mixed gas of the air and oxygen after converging.

12. The anesthesia machine according to any one of claims 8 to 11, characterized in that: The high-frequency airflow formed at the output port ventilates the patient at a ventilation frequency of at least 50 times per minute.

13. The anesthesia machine according to any one of claims 8 to 11, characterized in that: The output port is used to connect to a jet accessory, and the high-frequency airflow output from the output port is transmitted through the jet accessory to form a high-frequency jet airflow.

14. The anesthesia machine according to claim 13, wherein: The ventilation frequency of the high-frequency jet airflow used to ventilate the patient is 50-1500 bpm.

15. The anesthesia machine according to claim 8, 9 or 11, characterized in that: A pressure sensor for monitoring pressure is provided between the second control valve and the output port; The human-computer interaction device includes a display. When the respiratory support mode received by the human-computer interaction device is respiratory support provided by the ventilation module, the display is used to display the waveform of the pressure monitored by the pressure sensor.

16. The anesthesia machine according to claim 15, wherein: A safety valve for pressure relief is further provided between the second control valve and the output port.

17. The anesthesia machine according to any one of claims 1 to 3, characterized in that: The ventilation module includes a gas delivery branch, a second control valve and an output port. The second control valve is arranged in the gas delivery branch and is used to control the ventilation module to provide periodic respiratory support; the ventilation module receives the first gas through the gas delivery branch, and the first gas is output through the injection accessory connected to the output port and formed into a jet airflow.

18. The anesthesia machine according to claim 1, wherein: The device further comprises a spray accessory connected to the ventilation module, wherein the spray accessory receives the first gas output by the ventilation module and forms a spray airflow of the first gas.

19. The anesthesia machine according to claim 18, wherein: The injection attachment includes an injection channel, and the output aperture of the injection channel is less than 4 mm.

20. The anesthesia machine according to any one of claims 1 to 3, characterized in that: Also included is a gas source module for providing a first gas; the gas source module includes an oxygen unit, and the first gas includes oxygen provided by the oxygen unit; The ventilation module includes: an oxygen branch, a second control valve and an output port; the oxygen unit is connected to the output port through the oxygen branch, and the output port is used to connect to a jet accessory. The second control valve is arranged in the oxygen branch, and is used to control the oxygen flow of the oxygen branch and form a periodic jet airflow after the oxygen output from the output port passes through the jet accessory.

21. The anesthesia machine according to any one of claims 1 to 3, characterized in that: Also included is a gas source module for providing a first gas; the gas source module includes an air unit, and the first gas includes air provided by the air unit; The ventilation module includes: an air branch, a second control valve and an output port; the air unit is connected to the output port through the air branch, and the output port is used to connect to a spray accessory. The second control valve is arranged in the air branch, and is used to control the air flow of the air branch and form a periodic spray airflow after the air output from the output port passes through the spray accessory.

22. The anesthesia machine according to any one of claims 1 to 3, characterized in that: Also included is a gas source module for providing a first gas; the gas source module includes an oxygen unit for providing oxygen and an air unit for providing air, the first gas includes oxygen provided by the oxygen unit and air provided by the air unit; The ventilation module includes: an oxygen branch, an air branch and an output port; the oxygen branch is connected to the oxygen unit, and the air branch is connected to the air unit; the oxygen branch and the air branch are connected to the output port after converging, and the output port is used to connect a jet accessory; wherein, a first control valve is provided in the oxygen branch, and the first control valve is used to control the oxygen flow of the oxygen branch and to form a periodic airflow of the oxygen in the oxygen branch; a third control valve is provided in the air branch, and the third control valve is used to control the air flow of the air branch and to form a periodic airflow of the air in the air branch; the mixed gas after the periodic airflow of the oxygen branch and the periodic airflow of the air branch converge forms a periodic jet airflow when output through the jet accessory connected to the output port.

23. The anesthesia machine according to any one of claims 1 to 3, characterized in that: Also included is a gas source module for providing a first gas; the gas source module includes an oxygen unit for providing oxygen and an air unit for providing air, the first gas includes oxygen provided by the oxygen unit and air provided by the air unit; The ventilation module includes: an oxygen branch, an air branch, a second control valve and an output port; the oxygen branch is connected to the oxygen unit, and the air branch is connected to the air unit; after the oxygen branch and the air branch converge, they are connected to the output port through the second control valve, and the output port is used to connect a jet accessory; wherein, a first control valve is provided in the oxygen branch, and a third control valve is provided in the air branch, the first control valve is used to control the oxygen flow of the oxygen branch, the third control valve is used to control the air flow of the air branch, and the second control valve is used to make the mixed gas of the air and oxygen after convergence form a periodic jet airflow when it is output through the jet accessory connected to the output port.

24. The anesthesia machine according to any one of claims 1 to 3, characterized in that: The first ventilation frequency is greater than or equal to 10 bpm, less than 3 Hz, or greater than 20 Hz.

25. The anesthesia machine according to claim 1 or 2, characterized in that: The ventilation module includes a second ventilation control device and a gas delivery branch, and the second ventilation control device is used to control the gas delivery branch to provide respiratory support for the patient.

26. The anesthesia machine according to claim 1 or 2, characterized in that: The ventilation module includes a gas delivery branch, and the first ventilation control device is further used to control the gas delivery branch to provide respiratory support for the patient.

27. The anesthesia machine according to claim 1 or 2, characterized in that: The human-computer interaction device includes a display. When the respiratory support mode received by the human-computer interaction device is that the respiratory support is provided by the ventilation module, the display is used to output a prompt message for shutting down the anesthetic delivery device or a prompt message for switching the patient's anesthesia mode.

28. The anesthesia machine according to claim 1 or 2, characterized in that: The anesthetic delivery device is an electronic vaporizer canister, and when the respiratory support mode received by the human-computer interaction device is that respiratory support is provided by the ventilation module, the anesthesia machine is further configured to determine whether the electronic vaporizer canister is turned off, and after determining that the electronic vaporizer canister is turned off, enable the ventilation module to provide respiratory support for the patient.

29. The anesthesia machine according to claim 1 or 2, characterized in that: Also included is a three-way valve; the three-way valve includes a first port connected to the flow monitoring device, a second port connected to the anesthetic delivery device, and a third port connected to the ventilation module; The flow monitoring device includes a fourth control valve and a fifth control valve; when the respiratory support mode received by the anesthesia machine is that the respiratory support is provided by the ventilation module, the first port and the third port are connected, and the fourth control valve and the fifth control valve are connected with the ventilation module, so that the ventilation module ventilates the patient at a first ventilation frequency; when the respiratory support mode received by the anesthesia machine is to provide anesthetic breathing support, the first port and the second port are connected, and the fourth control valve and the fifth control valve are connected with the anesthetic delivery device, and the first gas is mixed with the anesthetic at a second ventilation frequency to obtain a second gas, so that the breathing circuit ventilates the patient; wherein the first ventilation frequency is greater than the second ventilation frequency.

30. The anesthesia machine according to claim 1, wherein: The first gas is at least an oxygen-containing gas, and the anesthesia machine further comprises: The auxiliary gas supply module is used to receive the first gas and use the first gas to provide respiratory support to the patient at a flow rate of 20-80 liters / minute.

31. The anesthesia machine according to any one of claims 1 to 30, characterized in that: The ventilation module provides respiratory support at the first ventilation frequency, and the first ventilation control device controls the breathing circuit to provide anesthetic respiratory support at a third ventilation frequency; wherein the first ventilation frequency is greater than the third ventilation frequency.

32. The anesthesia machine according to claim 6, 8, 9, 11, 15, 16, 17, 20, 21 or 23, wherein: The second control valve is selected from a solenoid valve, a solenoid servo valve, a solenoid switching valve and a solenoid proportional valve.

33. The anesthesia machine according to claim 1, wherein: It also includes a gas source module for providing the first gas; the gas source module is connected to the anesthetic delivery device through the flow monitoring device; and the ventilation module is connected to the gas source module.

34. The anesthesia machine according to claim 2, wherein: Also includes: a first gas source module for providing the first gas, and a second gas source module for providing the third gas; The second air source module is connected to the anesthetic delivery device through the flow monitoring device; and the ventilation module is connected to the first air source module.

35. The anesthesia machine according to any one of claims 1 to 3, characterized in that: It also includes a carbon dioxide monitoring module for detecting the patient's end-tidal carbon dioxide concentration when the first ventilation control device provides anesthesia breathing support for the patient, and / or detecting the patient's end-tidal carbon dioxide concentration when the ventilation module provides breathing support for the patient.

36. An anesthesia machine, characterized in that: include: Air source interface, breathing circuit, and first ventilation control device; One end of the gas source interface is used to connect to the gas source, and the other end is used to communicate with the anesthetic delivery device; the anesthetic delivery device is used to mix the gas provided by the gas source with the anesthetic and deliver the mixed gas to the breathing circuit; The first ventilation control device is used to control the breathing circuit so that the mixed gas is delivered to the patient, thereby providing anesthesia breathing support for the patient; It is characterized by also including: A ventilation module is used to provide respiratory support to a patient using the gas provided by the gas source; wherein the ventilation module includes a gas delivery branch, which receives the gas provided by the gas source and provides respiratory support to the patient at a ventilation frequency of more than 50 times / minute.

37. The anesthesia machine according to claim 36, wherein: The ventilation module also includes a second control valve arranged in the gas delivery branch and an output port connected to the gas delivery branch, and the output port is used to connect a jet accessory; wherein, the second control valve is controlled to switch the flow rate at a frequency of at least 50 times / minute, so that when the gas provided by the external gas source is output through the jet accessory connected to the output port, a high-frequency jet airflow is formed.

38. An anesthesia machine, characterized in that: include: Air source interface, breathing circuit, and first ventilation control device; One end of the gas source interface is used to connect to the gas source, and the other end is used to communicate with the anesthetic delivery device; the anesthetic delivery device is used to mix the gas provided by the gas source with the anesthetic and deliver the mixed gas to the breathing circuit; The first ventilation control device is used to control the breathing circuit so that the mixed gas is delivered to the patient, thereby providing anesthesia breathing support for the patient; It is characterized by also including: The ventilation module is used to connect to the injection accessory, receive the gas output by the gas source interface and adjust it so that the gas passes through the injection accessory in the form of a jet airflow to provide respiratory support to the patient.

39. An anesthesia machine comprising: Gas source interface, breathing circuit and human-computer interaction device; One end of the gas source interface is used to connect to the gas source, and the other end is used to communicate with the anesthetic delivery device; the anesthetic delivery device is used to mix the third gas provided by the gas source with the anesthetic, and deliver the mixed second gas to the breathing circuit; The breathing circuit is used to deliver the second gas to the patient, thereby providing anesthetic breathing support to the patient; The human-computer interaction device is used to receive a user input of a respiratory support mode provided by the anesthesia machine to the patient; It is characterized by further comprising: a communication module, configured to communicate with an external ventilation device, wherein the ventilation device is configured to provide respiratory support to a patient using a first gas at a first ventilation frequency, wherein the first ventilation frequency is not zero; The anesthesia machine also provides anesthesia breathing support for the patient according to the breathing support mode received by the human-computer interaction device and / or controls the ventilation device through the communication module so that the ventilation device provides breathing support for the patient.

40. The anesthesia machine according to claim 39, wherein: The anesthesia machine further enables the anesthesia machine to provide anesthesia breathing support for the patient and / or controls the ventilation device through the communication module according to the breathing support mode received by the human-computer interaction device, so that the ventilation device provides breathing support for the patient, including: The anesthesia machine provides a ventilation status display area and a ventilation mode switching area on the display interface of the human-computer interaction device; the ventilation mode switching area displays a first respiratory support mode and a second respiratory support mode for the user to select; When the user selects the first respiratory support mode, a control window of the first respiratory support mode is displayed in the ventilation mode switching area for the user to set ventilation parameters of the first respiratory support mode; and based on the ventilation parameters set by the user, the ventilation device is controlled through the communication module so that the ventilation device provides respiratory support to the patient according to the ventilation parameters set by the user; When the user selects the second respiratory support mode, a control window of the second respiratory support mode is displayed in the ventilation mode switching area for the user to set the ventilation parameters of the second respiratory support mode; and then based on the ventilation parameters set by the user, the anesthesia machine provides anesthetic breathing support for the patient.

41. The anesthesia machine according to claim 40, wherein: The anesthesia machine displays a first respiratory support mode and a second respiratory support mode on the display interface of the human-computer interaction device for the user to select, including: The first respiratory support mode and the second respiratory support mode are displayed simultaneously in the ventilation mode switching area for the user to select; or, The second respiratory support method is displayed in the ventilation mode switching area, while the first respiratory support method is hidden.

42. The anesthesia machine according to claim 39, wherein: The anesthesia machine displays an operation interface of the anesthesia machine on the display interface of the human-computer interaction device, wherein the operation interface of the anesthesia machine is used for allowing a user to select a second respiratory support mode and set ventilation parameters for the second respiratory support mode; the display interface of the human-computer interaction device also displays an operation interface of the ventilation device; the operation interface of the ventilation device is used for allowing a user to select a first respiratory support mode and set ventilation parameters for the first respiratory support mode; After the first respiratory support mode is selected, the anesthesia machine controls the ventilation device through the communication module so that the ventilation device provides respiratory support for the patient; After the second respiratory support mode is selected, the anesthesia machine provides anesthesia respiratory support for the patient.

43. The anesthesia machine according to claim 42, wherein: The operation interface of the ventilation device is displayed on the display interface of the human-computer interaction device only after the anesthesia machine is connected to the ventilation device through the communication module.

44. The anesthesia machine according to claim 39, wherein: The human-computer interaction device of the anesthesia machine includes a first human-computer interaction device and a second human-computer interaction device; The anesthesia machine displays a control window of a first respiratory support mode on the display interface of the first human-computer interaction device for the user to select the first respiratory support mode and set the ventilation parameters of the first respiratory support mode; and displays a control window of a second respiratory support mode on the display interface of the second human-computer interaction device for the user to select the second respiratory support mode and set the ventilation parameters of the second respiratory support mode; After the first respiratory support mode is selected, the anesthesia machine controls the ventilation device through the communication module so that the ventilation device provides respiratory support for the patient; After the second respiratory support mode is selected, the anesthesia machine provides anesthesia respiratory support for the patient.

45. The anesthesia machine according to claim 44, wherein: The anesthesia machine displays a control window of the first respiratory support mode on the display interface of the first human-computer interaction device only after the anesthesia machine is communicatively connected with the ventilation device through the communication module.

46. ​​A ventilation control method for an anesthesia machine, characterized in that: include: Receiving user input of a respiratory support mode provided by the anesthesia machine; When the received respiratory support mode is providing anesthetic respiratory support, receiving a third gas, controlling the third gas to mix with an anesthetic to obtain a second gas, controlling the second gas to enter a breathing circuit of the anesthesia machine, and controlling the breathing circuit to output the second gas, thereby providing anesthetic respiratory support for the patient; When the received respiratory support mode is respiratory support provided by a ventilation module, a first gas is received, and the ventilation module is controlled to use the first gas at a non-constant flow rate to provide respiratory support for the patient in a single respiratory cycle.

Images