Medical device
By using existing gas interfaces and vortex tubes in auxiliary breathing equipment for condensation and drying, the problems of difficulty in installation of condensation devices and reduced reliability in the equipment are solved, efficient condensation and cooling are achieved, and the integrity and reliability of the equipment are maintained. .
Patent Information
- Application Number
- CN202310826174.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-06
- Publication Date
- 2025-01-07
AI Technical Summary
In auxiliary respiratory equipment, it is difficult to effectively install condensation devices in a compact structure, and adding external interfaces will reduce the reliability and mobility of the equipment and increase the risk of electricity and gas leakage.
Using the existing external gas interface as the input of the condenser, the air is generated through the vortex tube for condensation and drying, and the condenser is combined with the heating element to cool it with the air conditioner, avoiding the use of additional energy.
It realizes condensation and drying without additional interfaces and energy, ensures the integrity and reliability of the internal gas circuit of the equipment, and improves the cooling efficiency and the compactness of the equipment.
Smart Images
Figure CN119258357A_ABST
Abstract
Description
Technical Field
[0001] The embodiments of the present application relate to the technical field of medical equipment, and in particular, to a medical equipment. Background Art
[0002] Assisted breathing equipment is a key device to support the patient's vital signs, mainly including anesthesia machines and ventilators. Among them, the anesthesia machine delivers anesthetics into the patient's alveoli through a mechanical circuit to form an anesthetic gas partial pressure, which directly inhibits the central nervous system after diffusing into the blood, thereby producing the effect of general anesthesia.
[0003] The gas circuit of the above-mentioned assisted breathing equipment often includes high-humidity gas or water. For example, during the use of the anesthesia machine, condensed water may be generated in the circuit due to the influence of moisture caused by the patient's breathing. Alternatively, the external gas source may also contain a high concentration of water vapor, which is then introduced into the gas circuit to produce condensed water. Condensed water should be discharged to the outside of the equipment as much as possible. On the one hand, it is to prevent the generation of bacteria. On the other hand, the presence of too much condensed water in the respiratory system will adversely affect the performance and accuracy of electrical components (such as gas flow sensors and oxygen concentration sensors). In addition, condensed water will increase the flow resistance of the fluid and the patient's respiratory work. Therefore, it is necessary to consider water management in the design of the respiratory system.
[0004] It should be noted that the above introduction to the technical background is only intended to provide a clear and complete description of the technical solution of the present application and to facilitate understanding by those skilled in the art. Summary of the invention
[0005] The inventors have found that it is usually difficult to install an additional condensing device inside the above-mentioned medical device for drying. Because the medical device usually has a compact structure and a complex gas path inside, the additional condensing device is difficult to install and will reduce the reliability of the device. In addition, if an external interface is added to the device for the condensing device, it will not only reduce the portability of the device but also further bring about the problem of reduced reliability. For example, the added power interface or gas interface will increase the risk of electrical leakage or gas leakage and the complexity of the use of the device.
[0006] In view of the above problems, the embodiments of the present application have been improved.
[0007] According to one aspect of an embodiment of the present application, a medical device is provided, the medical device comprising:
[0008] A gas source interface, which is connected to high-pressure gas from an external gas source;
[0009] a first gas channel, the first gas channel being connected to the gas source interface to receive the high-pressure gas and convey the high-pressure gas to the electronic flow meter;
[0010] a second gas channel, the second gas channel and the first gas channel are connected to the gas source interface at the same time to receive the high-pressure gas at the same time as the first gas channel; the second gas channel includes a vortex tube, the vortex tube separates the high-pressure gas to generate cold air in the second gas channel; and
[0011] A condenser, the condenser comprises a cold air channel and a gas channel to be condensed, the cold air channel is connected to the second gas channel to receive the cold air, and the gas channel to be condensed is connected to the gas to be condensed in the medical device for condensation.
[0012] According to one aspect of an embodiment of the present application, a medical device is provided, the medical device comprising:
[0013] A gas source interface, which is connected to high-pressure gas from an external gas source;
[0014] a first gas channel, the first gas channel being connected to the gas source interface to receive the high-pressure gas and convey the high-pressure gas to the electronic flow meter;
[0015] a second gas channel, wherein the second gas channel and the first gas channel are simultaneously connected to the gas source interface to receive the high-pressure gas simultaneously with the first gas channel; the second gas channel comprises a vortex tube, and the vortex tube separates the high-pressure gas to generate cold air in the second gas channel;
[0016] A cooling channel is connected to the second gas channel to receive the cold air, and the cooling channel is further connected to at least part of the heating element of the medical device to cool the at least part of the heating element using the received cold air.
[0017] One of the beneficial effects of the embodiments of the present application is that the existing external gas interface of the assisted breathing equipment is used as the input of the condenser, without the need to set up an additional external interface, and condensation and drying do not require additional energy supply, thereby ensuring the integrity and reliability of the internal gas circuit of the assisted breathing equipment.
[0018] With reference to the following description and accompanying drawings, the specific implementation of the embodiment of the present application is disclosed in detail, indicating the way in which the principle of the embodiment of the present application can be adopted. It should be understood that the implementation of the present application is not limited in scope. Within the scope of the spirit and clauses of the attached claims, the implementation of the present application includes many changes, modifications and equivalents. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other implementation methods can be obtained based on these drawings without creative work. In the drawings:
[0020] Figure 1 is a schematic diagram of an implementation of a medical device according to an embodiment of the present application;
[0021] Figure 2 is a schematic diagram of a vortex tube of a medical device according to an embodiment of the present application;
[0022] Figure 3 is a schematic diagram of an implementation of a condenser according to an embodiment of the present application;
[0023] Figure 4 is a schematic diagram of another embodiment of the condenser of the present application,
[0024] Figure 5 is a schematic diagram of another embodiment of the condenser of the present application.
[0025] Figure 6 is a schematic diagram of another implementation of the medical device of the embodiment of the present application;
[0026] Figure 7 is a schematic diagram of another implementation of the medical device of the embodiment of the present application;
[0027] Figure 8 is a schematic diagram of another implementation of the medical device of the embodiment of the present application;
[0028] Fig. 9 is a schematic diagram of an anesthesia machine according to an embodiment of the present application;
[0029] Fig.10 is a schematic diagram of an implementation of a medical device according to an embodiment of the present application;
[0030] Fig.11 It is a schematic diagram of another implementation of the medical device of an embodiment of the present application. DETAILED DESCRIPTION
[0031] With reference to the accompanying drawings, the foregoing and other features of the embodiments of the present application will become apparent through the following description. In the description and the accompanying drawings, specific embodiments of the present application are specifically disclosed, which show some embodiments in which the principles of the embodiments of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the embodiments of the present application include all modifications, variations and equivalents that fall within the scope of the attached claims.
[0032] In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements in terms of title, but do not represent the spatial arrangement or temporal order of these elements, etc., and these elements should not be limited by these terms. The term "and / or" includes any one and all combinations of one or more of the terms listed in association. The terms "comprising", "including", "having", etc. refer to the presence of the stated features, elements, components or components, but do not exclude the presence or addition of one or more other features, elements, components or components. The terms "pixel" and "voxel" are used interchangeably.
[0033] In the embodiments of the present application, the singular forms "a", "the", etc. include plural forms and should be broadly understood as "a kind" or "a type" rather than being limited to the meaning of "one"; in addition, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. In addition, the term "according to" should be understood as "at least in part according to...", and the term "based on" should be understood as "at least in part based on...", unless the context clearly indicates otherwise.
[0034] In the embodiments of the present application, when a component is referred to as being "disposed on", "installed on" or "connected to" (or similar terms) another component, it may be directly disposed on, installed on or connected to the other component, or indirectly disposed on, installed on or connected to the other component through other intermediate elements. In addition, the two components represented by "connected" or "connected" may be two independent components directly or indirectly connected together by a connecting device, or may be two components integrally formed together (i.e., two parts of a whole).
[0035] Features described and / or shown for one embodiment may be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or replace features in other embodiments. The term "includes / comprising" when used herein refers to the presence of a feature, an entirety, a step, or a component, but does not exclude the presence or addition of one or more other features, entireties, steps, or components.
[0036] The embodiments of the present application are described below with reference to the accompanying drawings.
[0037] The present application embodiment provides a medical device, Figure 1 It is a schematic diagram of an implementation of a medical device according to an embodiment of the present application.
[0038] like Figure 1 As shown, the medical device 10 includes a gas source interface 100 , a first gas channel 110 , a second gas channel 120 , and a condenser 130 .
[0039] The gas source interface 100 is connected to high-pressure gas G from an external gas source, such as an air supply device or a pipeline.
[0040] The first gas channel 110 is connected to the gas source interface 100 to receive the high-pressure gas G and deliver the high-pressure gas G to the electronic flow meter 140 (to be described later);
[0041] The second gas channel 120 is also connected to the gas source interface 100 , so that the first gas channel 110 and the second gas channel 120 are simultaneously connected to the gas source interface 100 to receive the high-pressure gas G simultaneously.
[0042] In addition, the second gas passage 120 includes a vortex tube 150, and the vortex tube 150 (to be described later) separates the high-pressure gas G to generate cold gas G in the second gas passage 120. c .
[0043] The condenser 130 includes a cold air channel 131 and a gas channel 132 to be condensed. The cold air channel 131 is connected to the second gas channel 120 to receive the cold air G c The gas channel 132 to be condensed is connected to the gas G to be condensed in the medical device 10. h Condensation is performed.
[0044] In some embodiments, the medical device 10 includes a housing (not shown). The above-mentioned components are arranged in the housing. In this way, even if the condensation drying device is introduced, the appearance of the medical device 10 will not change significantly (the air source interface is not increased), and the volume will not change significantly (the air path of the condensation drying is simple and compact).
[0045] Thus, a portion of the high pressure gas G input from the gas source is used to generate cold air through the vortex tube 150, so that active cooling is achieved by using the generated cold air. h After condensation, the water vapor in it will become liquid and separate from the gas, finally reaching the G of the dry gas to be condensed. hObjective. Through a simple and reliable vortex tube, efficient utilization of high-pressure gas and improved cooling efficiency are achieved at the same time. In addition, the condenser achieves higher cooling efficiency, can better collect water, and has a smaller appearance size. Moreover, in the above-mentioned embodiment of the present application, the existing gas source interface 100 in the medical device 10 is utilized to simultaneously supply the electronic flow meter 140 and the vortex tube 150. In this way, the integrity of the equipment is guaranteed to the greatest extent and the user's usage habits are kept unchanged. In addition, condensation and drying do not require additional energy input (such as electrical energy), which ensures the compactness and reliability of the medical device 10.
[0046] In the above example, the gas from the external gas source may be depressurized or pressurized before being connected to the gas source interface 100, for example. Figure 1 As shown, the gas source interface 100 may include a module for reducing or increasing the pressure of the gas, so that the pressure of the gas entering the vortex tube 150 reaches a predetermined value, for example, reaches a gas intake threshold specified by the vortex tube 150 .
[0047] It should be noted that the above Figure 1 The embodiments and their corresponding embodiments only schematically describe the key components of the medical device 10. The medical device 10 may also include other conventional additional components, such as a user interface for human-computer interaction, a passage for gas exchange with a patient, and / or an anesthetic delivery device.
[0048] Figure 2 is a schematic diagram of a vortex tube of a medical device according to an embodiment of the present application.
[0049] like Figure 2As shown, the vortex tube 150 includes a gas inlet 151, a vortex chamber 152, a cold air pipe 153, a hot air pipe 154, and a control valve 155. The compressed gas (for example, high-pressure gas G) enters the vortex tube 150 from the gas inlet 151 located on the side 150a of the vortex tube 150. The gas inlet 151 is, for example, a convergent nozzle. The compressed gas is continuously expanded and accelerated through the convergent nozzle, enters the vortex chamber 152 along the tangential direction at the speed of sound, and generates a high-speed rotating vortex in the vortex chamber 152. The angular velocities of the airflows in the inner and outer circles of the vortex are different. The angular velocity of the inner circle is large, and the angular velocity of the outer circle is small. The inner circle airflow drives the outer circle airflow to rotate by friction, that is, the power of the inner circle airflow is provided to the outer circle airflow to make it rotate, so that the gas internal energy of the inner circle airflow is continuously converted into the power of rotation, the gas internal energy is reduced, and thus the temperature is reduced. In contrast, the internal energy of the outer circle gas increases and the temperature rises, thereby forming an inner circle low-temperature vortex and an outer circle high-temperature vortex in the vortex tube 150. The control valve 155 is located at the opening of the hot air pipe 154. The control valve 155 is, for example, conical, so that the radial outer circle at the end of the hot air pipe 154 becomes a gas channel, so that the high-temperature vortex in the outer circle overflows from the gap between the hot air pipe 154 and the control valve 155, while the low-temperature vortex in the inner circle is blocked by the control valve 155, the pressure increases, and is discharged from the cold air pipe 153 at the other end.
[0050] In some embodiments, the temperature and flow rate of the hot air flow and the cold air flow can be adjusted by adjusting the control valve 155. The higher the flow rate ratio of the hot air flow, the lower the temperature and flow rate of the cold air flow. By adjusting the control valve 155, the vortex tube 150 can generate an air flow at a temperature of -46°C to +127°C. In addition, the pressure of the input compressed air can be adjusted to achieve the required air flow temperature.
[0051] For example, the temperature change rate of the hot gas and the cold gas can be adjusted. The control valve 155 is, for example, an adjustable screw, which can be adjusted to obtain different volume ratios of hot gas and cold gas. As shown in Table 1, the gas temperature of the hot port and the cold port changes under different input gas pressures, so that different hot gas temperatures and cold gas temperatures can be obtained. For example, when the pipeline air pressure of 300kpa is used as the input pressure, the cold gas temperature can be from 9°C to -62°C, and the hot gas temperature can be from 43°C to 71.5°C. Among them, 9°C is obtained by subtracting a temperature drop of 12°C from the ambient temperature of 21°C, and 43°C is obtained by adding a temperature increase of 22°C to the ambient temperature of 21°C.
[0052] Table 1
[0053]
[0054] In the above example, if Figure 1As shown, the gas inlet 151 of the vortex tube 150 receives the high-pressure gas G in the second gas channel 120, and the generated cold gas G c The air inlet of the cold air passage 131 of the condenser 130 is connected to the cold air passage 153 to receive the cold air G c , thus treating the condensed gas G h Thus, a part of the existing high-pressure gas is used to condense the gas to be condensed through the vortex tube 150, thereby achieving efficient utilization of resources.
[0055] Furthermore, since the vortex tube is a simple mechanical device, a portion of the high-pressure gas input from the gas source can be used to generate cold air through a simple structure, thereby achieving active cooling using the generated cold air.
[0056] In addition, the hot gas flow discharged from the hot gas pipe 154 of the vortex tube 150 can be used to heat the gas channel, thereby reducing condensed liquid droplets in the gas channel.
[0057] In some embodiments, Figure 1 As shown, the second gas channel 120 may further include a first solenoid valve 160, which controls the on / off state of the gas entering the vortex tube 150. Thus, the cold air G supplied to the condenser 130 is controlled by controlling the first solenoid valve 160. c Take control.
[0058] For example, Figure 1 As shown, the second gas channel 120 may further include a sensor 170 and a controller (not shown in the figure). The sensor 170 is, for example, a temperature sensor, which monitors the temperature in the condenser 130. The controller receives the monitoring result of the sensor 170 and controls the switch state of the first solenoid valve 160 according to the monitoring result. Thus, the cold air G of the condenser 130 can be controlled according to the temperature in the condenser 130. c The supply of heat is sufficient to keep the temperature in the condenser 130 stable. In addition, the controller may be a component of the medical device 10, or may be a control device independent of the medical device 10, which is not limited in the present embodiment.
[0059] Figures 3 to 5 Schematic diagram of different implementations of the condenser of the embodiment of the present application, Figures 3 to 5 The structure of the condenser is described by taking the example, but those skilled in the art should understand that the embodiment of the present application does not limit the implementation method of the condenser 130, and corresponding selection can be made according to actual needs.
[0060] like Figures 3 to 5As shown, the condenser 130 includes a cold air channel 131 and a gas channel 132 to be condensed. The cold air channel 131 includes an air inlet 1311 and an air outlet 1312. The gas channel 132 to be condensed includes an air inlet 1321 and an air outlet 1322. The cold air enters the condenser 130 through the air inlet 1311 of the cold air channel 131, and is discharged from the air outlet 1312 of the cold air channel 131 after condensing the gas to be condensed in the gas channel 132 to be condensed. The gas to be condensed enters the condenser 130 from the air inlet 1321 of the gas channel 132 to be condensed, and is discharged from the air outlet 1322 of the gas channel 132 to be condensed after being condensed by the cold air in the cold air channel 131.
[0061] In some embodiments, Figures 3 to 5 As shown, the air inlet 1311 of the cold air passage 131 is located above the condenser 130 in the direction of gravity, and the air outlet 1312 of the cold air passage 131 is located on the side wall of the condenser 130 near the bottom in the direction of gravity. Thus, the cold air moves in the cold air passage 131 by its own gravity.
[0062] In some embodiments, Figures 3 to 5 As shown, the gas outlet 1322 of the gas channel 132 to be condensed is located on the side wall of the condenser 130 near the upper position in the gravity direction. Figure 4 and Figure 5 As shown, the air inlet 1321 of the gas channel 132 to be condensed is located on the side wall of the condenser 130, close to the upper position in the gravity direction, thereby allowing the gas to be condensed to sink by its own gravity and then float up, increasing the contact time between the gas to be condensed and the cold air channel 131, so that it can be fully condensed; or Figure 3 As shown, the air inlet 1321 of the to-be-condensed gas channel 132 is located on the side wall of the condenser 130 at a position close to the bottom in the gravity direction, thereby causing the to-be-condensed gas to gradually condense during the rising process.
[0063] In some embodiments, Figure 5 As shown, a guide structure 133 is provided on the inner wall of the condenser 130, and the guide structure 133 can guide the gas entering from the gas channel 132 to be condensed, thereby allowing the gas to be condensed to further fully contact with the cold air channel 131, so as to be fully condensed.
[0064] In some embodiments, the condenser 130 may also include an opening (not marked in the figure) located below the gas channel 132 to be condensed, for example, at the lower central position of the inner wall of the condenser 130 in the gravity direction, so that the condensed water is collected or dried through the opening under the action of gravity.
[0065] In the embodiment of the present application, the to-be-condensed gas channel 132 of the condenser 130 can be connected to different positions of the medical equipment (eg, anesthesia machine) as needed.
[0066] For example, Figure 1 As shown, the gas channel 132 to be condensed can be arranged between the first gas channel 110 and the electronic flow meter 140, the air inlet of the gas channel 132 to be condensed is connected to the gas source interface 100, and the air outlet of the gas channel 132 to be condensed is connected to the air inlet of the electronic flow meter 140, thereby, the gas entering the electronic flow meter 140 is condensed gas, which can prevent large particles of water from condensing on the membrane of the gas flow sensor of the electronic flow meter 140, thereby improving the measurement accuracy of the gas flow.
[0067] Figure 6 is a schematic diagram of another embodiment of the medical device of the present application, showing the use of Figure 3 The condition of the condenser 130 shown; Figure 7 is a schematic diagram of another embodiment of the medical device of the present application, showing the use of Figure 5 The situation of the condenser 130 is shown.
[0068] like Figure 6 and Figure 7 As shown, in other embodiments, the gas channel 132 to be condensed can also be arranged between the first gas channel 110 and the mixer (E-mixer) 180, and the air inlet of the gas channel 132 to be condensed is connected to the gas source interface 100; the air outlet of the gas channel 132 to be condensed is connected to an air inlet of the E-mixer 180, for example, the other air inlet of the E-mixer 180 can be connected to other components. For example, an oxygen (O2) supply device and a nitrous oxide (N2O) supply device can be connected, thereby, the condensed gas can be used to mix with oxygen (O2) and nitrous oxide (N2O), which is beneficial to the medical effect.
[0069] in addition, Figure 6 and Figure 7 Although not shown, the E-mixer 180 may also include an electronic flow meter. Before the condensed gas (such as air) is mixed with oxygen (O2) and nitrous oxide (N2O), the electronic flow meter may be connected to control the mixing ratio of the various gases.
[0070] in addition, Figure 7 and Figure 6 The difference is that the structure of the condenser 130 is different, but the present application is not limited thereto. Figure 6 and Figure 7 The condenser 130 in the embodiment can also be replaced by a condenser of other structures, for example, Figure 4The condenser shown is not limited in the embodiments of the present application.
[0071] In some embodiments, the medical device may further include a breathing circuit, and the air inlet and the air outlet of the to-be-condensed gas channel are respectively connected to the breathing circuit, thereby condensing and drying the gas in the breathing circuit.
[0072] Figure 8 It is a schematic diagram of another implementation of the medical device of an embodiment of the present application.
[0073] like Figure 8 As shown, the medical device 10 includes a breathing circuit 190, and the breathing circuit 190 includes, for example, an air inlet channel 191 and an air outlet channel 192. The air inlet of the gas channel 132 to be condensed is connected to the air outlet channel 192, and the air outlet of the gas channel 132 to be condensed is connected to the air inlet channel 191. Therefore, the gas entering the breathing circuit is condensed gas, which is beneficial to the medical effect.
[0074] In addition, if Figure 8 As shown, the breathing circuit 190 may also include an oxygen sensor 193 for measuring oxygen concentration, an intake flow sensor 194 for measuring intake air flow, a patient interface 195 connected to the patient's respiratory system, an outflow flow sensor 196 for measuring outflow air flow, an absorption tank assembly 197 for absorbing water vapor in the patient's exhaled gas, and a control element 198 for controlling the absorption tank assembly 197. In addition, the intake channel 191 is also connected to the fresh gas flow (FGF). It should be noted that the breathing circuit 190 of the embodiment of the present application may include Figure 8 All components shown in the figure may include only a part of them, or may also include Figure 8 As for the components not shown, the specific components of the breathing circuit 190 can be configured according to actual needs, and reference can be made to the relevant technology, which is not limited in the embodiments of the present application.
[0075] in addition, Figure 8 The bottom of the condenser 130 shown includes a drainage control assembly 135, whereby the condensed water collected in the condenser 130 can be discharged by controlling the drainage control assembly 135. However, the embodiment of the present application is not limited to this. Figure 8 The condenser 130 shown in the figure can also be replaced by a condenser of other structures, for example, Figures 3 to 5 Any of the condensers shown in the figure can also be Figure 8 The structure of the condenser 130 shown is similar to Figures 3 to 5 Any of the condenser structures shown in the figure can be combined to achieve a new structure, for example, Figure 8 The drainage control assembly 135 shown is Figure 5 The condenser 130 is shown combined.
[0076] In some embodiments, the medical device may be at least one of an anesthesia machine and a ventilator.
[0077] The medical device 10 of the embodiment of the present application is further described below using an anesthesia machine as an example.
[0078] Fig. 9 It is a schematic diagram of an anesthesia machine according to an embodiment of the present application.
[0079] like Fig. 9 As shown, the anesthesia machine 900 includes a driving gas source 901, a ventilation engine 902, a bellows 903, an exhaust system 904, a breathing gas source 905, an anesthesia source 906, a mixer 907, an intake flow control valve 908, an expiratory flow control valve 909, a circuit 910, and a conduit connecting the various components (not shown).
[0080] In some embodiments, the breathing gas source 905 is connected to the mixer 907. The breathing gas source 905 provides fresh gas, such as oxygen, air, nitrous oxide, etc., which are mixed in the mixer 907. The mixer 907 is also connected to the anesthesia source 906. After the anesthetic is added to the mixed gas, it flows into the interior of the bellows 903. The interior of the bellows 903 is connected to the respiratory tract of the object (e.g., the patient).
[0081] In some embodiments, the mixer 907 can be replaced by the E-mixer 180 in the aforementioned embodiment, that is, the outlet of the gas channel 132 to be condensed of the condenser 130 can be connected to the air inlet channel 971 of the mixer 907, whereby the condensed gas is mixed with oxygen and nitrous oxide in the mixer 907 to carry the anesthetic.
[0082] In some embodiments, the ventilation engine 902 is connected to the driving gas source 901. The ventilation engine 902 may include (not shown) a pressure reducing valve, a flow valve, a flow sensor and a one-way valve connected in sequence. The driving gas (e.g., air) of the driving gas source 901 flows into the one-way valve via the flow valve and the sensor.
[0083] In some embodiments, the interior of the bellows 903 is also connected to an exhaust system 904, which is used to recover anesthetic waste gas. The implementation of the exhaust system 904 (such as AGSS) can refer to the prior art and will not be described in detail here.
[0084] In some embodiments, an intake flow control valve 908 and an exhalation flow control valve 909 (such as a diaphragm or a balloon-type valve) are respectively disposed on a conduit near the intake port and a conduit near the exhalation port to control the gas flow and pressure of intake and exhalation. The intake flow control valve may be a solenoid valve.
[0085] During most of the inspiratory phase of the patient's breathing, the gas from the anesthesia machine is transmitted to the catheter through the intake flow control valve 908, and finally reaches the patient through the drive of the ventilation engine 902. During most of the expiratory phase of the patient's breathing, the one-way valve is closed, and the exhaled gas reaches the expiratory flow control valve 909 through the catheter and is then discharged to the exhaust system 904.
[0086] In some embodiments, the anesthesia machine 900 may also include a monitoring device 1000 for monitoring the vital signs (respiratory rate), gas pressure, etc. of the subject, as well as a carbon dioxide absorber 1001, a hand-controlled device 1002, etc. The fresh gas from the anesthesia machine (driven by the driving gas) enters the lungs of the subject through the circuit 910, and the diaphragm contracts to discharge carbon dioxide in the circuit 910 and is absorbed by the carbon dioxide absorber 1001. The hand-controlled device 1002 plays a similar role to the ventilation engine 902.
[0087] In some embodiments, the anesthesia machine 900 may further include an airway pressure detector 1003 for detecting the pressure in the circuit 910 and an oxygen concentration detector 1004 for detecting the oxygen content in the air intake passage.
[0088] In addition, medical equipment does not necessarily have to include Fig. 9 All components shown in ; in addition, medical devices may also include Fig. 9 For components not shown in the figure, please refer to the prior art for details, and they will not be illustrated one by one here.
[0089] In addition, when the medical device is a ventilator, the ventilator does not need to include Fig. 9 The anesthesia source 906 is shown, and in addition, the breathing gas source 905 provides fresh gas, such as oxygen, air, etc. The mixer in the ventilator can be connected with Fig. 9 The embodiment of the mixer 907 shown is the same. In addition, the outlet of the to-be-condensed gas channel 132 of the condenser 130 can also be connected to the air inlet channel of the mixer of the ventilator.
[0090] It can be seen from the above embodiments that the existing external gas interface of the auxiliary breathing device is used as the input of the condenser, and there is no need to set up an additional external interface. Condensation and drying do not require additional energy supply, thereby ensuring the integrity and reliability of the internal gas circuit of the auxiliary breathing device.
[0091] The present application also provides a medical device, Fig.10 is a schematic diagram of an implementation of a medical device in an embodiment of the present application, Fig.11 It is a schematic diagram of another implementation of the medical device of an embodiment of the present application.
[0092] like Fig.10 and Fig.11 As shown, the medical device 20 includes a gas source interface 200 , a first gas channel 210 , a second gas channel 220 , and a cooling channel 230 .
[0093] The gas source interface 200 is connected to the high-pressure gas G from the external gas source, the first gas channel 210 is connected to the gas source interface 200 to receive the high-pressure gas G and deliver the high-pressure gas G to the electronic flow meter 240, the second gas channel 220 and the first gas channel 210 are simultaneously connected to the gas source interface 200 to simultaneously receive the high-pressure gas G with the first gas channel 210; the second gas channel 220 includes a vortex tube 250, and the vortex tube 250 separates the high-pressure gas G to generate cold gas G in the second gas channel 220 c .
[0094] The implementation methods of the gas source interface 200, the first gas channel 210, the second gas channel 220, the electronic flow meter 240 and the vortex tube 250 in the embodiment of the present application are the same as or similar to the implementation methods of the corresponding parts of the medical device 10 in the aforementioned embodiment. The aforementioned embodiment can be referred to and will not be described one by one here.
[0095] In some embodiments, Fig.10 and Fig.11 As shown, the cooling channel 230 is connected to the second gas channel 220 to receive the cold air G c The cooling channel 230 is further connected to at least part of the heating element 270 of the medical device 20 to utilize the received cold air G c At least a portion of the heat generating element 270 is cooled.
[0096] In the embodiment of the present application, at least part of the heating element 270 is, for example, a part of a circuit board or a heating electronic device in the medical device 20, for example Fig.11 As shown, at least part of the heating element 270 includes at least one printed circuit board, which is not limited in the present embodiment. In addition, when the medical device 20 is an anesthesia machine, at least part of the heating element 270 can also be a circuit board of the middle plate or the top plate of the anesthesia machine. Thus, the existing air source is used to create a relatively low temperature airflow through the space to cool the circuit board, thereby improving the use efficiency of the air source.
[0097] In some embodiments, Fig.10 and Fig.11 As shown, the second gas channel 220 may further include a second solenoid valve 260, and the second solenoid valve 260 controls the on-off state of the gas entering the vortex tube 250. The implementation of the second solenoid valve 260 in the embodiment of the present application is the same as or similar to the implementation of the first solenoid valve 160 in the medical device 10, and can refer to the aforementioned embodiment, which will not be described one by one here.
[0098] In some embodiments, Fig.10 and Fig.11 As shown, the second gas channel 220 may further include a sensor 280, which monitors the temperature of at least part of the heating element 270. The sensor 280 is, for example, a temperature sensor, and its specific implementation may refer to related technologies, which is not limited in the embodiments of the present application.
[0099] In addition, the second gas channel 220 may further include a controller (not shown in the figure), which receives the monitoring of the temperature of at least part of the heating element 270 by the sensor 280, and controls the switch state of the second solenoid valve 260 according to the monitoring result. Thus, the temperature of at least part of the heating element 270 is controlled, for example, the temperature of at least part of the heating element 270 can be kept stable by controlling the second solenoid valve 260, which is conducive to the normal operation of the heating element.
[0100] In some embodiments, a flow guide device (not shown) is provided on at least one side of at least part of the heating element 270, and the flow guide device guides the gas around at least part of the heating element 270 to cool it. For example, a gas flow channel CH (such as Fig.11 As shown), thereby facilitating cooling of the air surrounding at least a portion of the heating element 270.
[0101] In some embodiments, the medical device 20 is at least one of an anesthesia machine and a ventilator. The implementation of the anesthesia machine and the ventilator can refer to the implementation described in the medical device 10, and will not be repeated here.
[0102] The above embodiments are merely exemplary of the embodiments of the present application, but the present application is not limited thereto, and appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.
[0103] The present application is described above in conjunction with specific implementation methods, but it should be clear to those skilled in the art that these descriptions are exemplary and are not intended to limit the scope of protection of the present application. Those skilled in the art can make various modifications and variations to the present application based on the spirit and principles of the present application, and these modifications and variations are also within the scope of the present application.
[0104] The preferred embodiments of the present application are described above with reference to the accompanying drawings. Many features and advantages of these embodiments are clear from this detailed description, and therefore the appended claims are intended to cover all such features and advantages of these embodiments that fall within their true spirit and scope. In addition, since many modifications and variations are easily conceivable to those skilled in the art, the embodiments of the present application are not intended to be limited to the precise structures and operations illustrated and described, but all suitable modifications, variations, and equivalents that fall within their scope may be covered.
Claims
1. A medical device, characterized in that: The medical equipment includes: A gas source interface, which is connected to high-pressure gas from an external gas source; a first gas channel, the first gas channel being connected to the gas source interface to receive the high-pressure gas and convey the high-pressure gas to the electronic flow meter; a second gas channel, the second gas channel and the first gas channel are connected to the gas source interface at the same time to receive the high-pressure gas at the same time as the first gas channel; the second gas channel includes a vortex tube, the vortex tube separates the high-pressure gas to generate cold air in the second gas channel; and A condenser, the condenser comprises a cold air channel and a gas channel to be condensed, the cold air channel is connected to the second gas channel to receive the cold air, and the gas channel to be condensed is connected to the gas to be condensed in the medical device for condensation.
2. The medical device according to claim 1, characterized in that The second gas channel further comprises: The first solenoid valve controls the on-off state of the gas entering the vortex tube.
3. The medical device according to claim 2, characterized in that The second gas channel further comprises: A sensor for monitoring the temperature in the condenser; A controller receives the monitoring of the temperature in the condenser by the sensor, and controls the switch state of the first solenoid valve according to the monitoring result.
4. The medical device according to claim 1, characterized in that The air inlet of the cold air channel of the condenser is located above the condenser in the direction of gravity, and the air outlet of the cold air channel of the condenser is located on the side wall of the condenser close to the bottom in the direction of gravity; and / or The air inlet of the gas channel to be condensed of the condenser is located at a position on the side wall of the condenser close to the upper side in the direction of gravity, or is located at a position on the side wall of the condenser close to the lower side in the direction of gravity; the air outlet of the gas channel to be condensed of the condenser is located at a position on the side wall of the condenser close to the upper side in the direction of gravity.
5. The medical device according to claim 1, characterized in that A flow guiding structure is arranged on the inner wall of the condenser to guide the gas entering from the gas passage to be condensed.
6. The medical device according to claim 1, characterized in that The condenser further includes an opening located below the passage for the gas to be condensed.
7. The medical device according to any one of claims 1 to 6, characterized in that: The to-be-condensed gas channel is disposed between the first gas channel and the electronic flow meter; The air inlet of the to-be-condensed gas channel is connected to the air source interface; The gas outlet of the to-be-condensed gas channel is connected to the gas inlet of the electronic flow meter.
8. The medical device according to any one of claims 1 to 6, characterized in that: The medical device further comprises a breathing circuit, and the air inlet and the air outlet of the to-be-condensed gas channel are respectively connected to the breathing circuit.
9. The medical device according to claim 1, characterized in that The medical device is at least one of an anesthesia machine and a ventilator.
10. A medical device, characterized in that: The medical equipment includes: A gas source interface, which is connected to high-pressure gas from an external gas source; a first gas channel, the first gas channel being connected to the gas source interface to receive the high-pressure gas and convey the high-pressure gas to the electronic flow meter; a second gas channel, wherein the second gas channel and the first gas channel are simultaneously connected to the gas source interface to receive the high-pressure gas simultaneously with the first gas channel; the second gas channel comprises a vortex tube, and the vortex tube separates the high-pressure gas to generate cold air in the second gas channel; A cooling channel is connected to the second gas channel to receive the cold air, and the cooling channel is further connected to at least part of the heating element of the medical device to cool the at least part of the heating element using the received cold air.
11. The medical device according to claim 10, characterized in that The second gas channel further comprises: The second solenoid valve controls the on-off state of the gas entering the vortex tube.
12. The medical device according to claim 11, characterized in that The second gas channel further comprises: a sensor for monitoring the temperature of at least a portion of the heating element; A controller receives the monitoring of the temperature of at least part of the heating element by the sensor, and controls the switching state of the second solenoid valve according to the monitoring result.
13. The medical device according to any one of claims 10 to 12, characterized in that: A flow guiding device is provided on at least one side of the at least part of the heating element, and the flow guiding device guides the gas around the at least part of the heating element to perform cooling.
14. The medical device according to claim 10, characterized in that The medical device is at least one of an anesthesia machine and a ventilator.