A clinical anesthetic gas concentration control device

Abstract

The present application relates to the technical field of medical devices, and discloses a clinical anesthetic gas concentration control device, which comprises a trolley unit, an outside of the trolley unit is provided with a concentration control unit for controlling the concentration of anesthetic gas, and the concentration control unit comprises: an anesthetic evaporation mechanism arranged on the trolley unit and used for evaporating injected anesthetic into anesthetic gas, and a gas mixing mechanism arranged on the trolley unit and used for mixing the anesthetic gas and oxygen in four resonance tubes respectively and simultaneously, and then mixing the anesthetic gas and oxygen in the four resonance tubes again in the mixing inner cylinder.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a clinical anesthetic gas concentration control device. Background Technology

[0002] Anesthesia involves mixing oxygen and anesthetic drugs to form a gas mixture, which is then administered to the patient to induce a state of partial or general unconsciousness. This reduces pain during surgery or treatment. The concentration of the anesthetic drug in the gas mixture is a crucial factor affecting the patient's state of coma or unconsciousness. Excessive concentration may lead to a dangerous state of excessive coma, while insufficient concentration will result in inadequate pain relief.

[0003] A search revealed a clinical anesthetic gas concentration control device in Chinese patent application number 202310939161.6. The device includes a base, a purification chamber fixedly mounted on the upper end of the base, and an anesthetic gas storage tank, an oxygen storage tank, and an anesthetic waste gas recovery tank also fixedly mounted on the upper end of the base. The purification chamber contains a mixing device, which includes a mixing box, bearings, a hollow shaft, a sealing ring, a motor, a drive wheel, a driven wheel, a stirring plate, a vent, an outlet, a switch valve, a detection head, and a filter. The user can first introduce all the anesthetic gas from the anesthetic gas storage tank into the mixing box through a first vent pipe, and simultaneously introduce oxygen from the oxygen storage tank through a second vent pipe. The oxygen then enters the hollow shaft and exits through the vent on the surface of the stirring plate on its side wall. Multiple vents increase the contact area between the oxygen and the anesthetic gas, thereby improving the mixing effect.

[0004] In the aforementioned prior art, the mixing method involves first introducing all the anesthetic gas into the mixing chamber, then introducing oxygen and stirring to achieve the mixing effect. However, adding all the anesthetic gas and oxygen at once makes it difficult for the anesthetic gas to mix quickly with the oxygen, thus affecting the mixing effect. Furthermore, simply using a stirring plate makes it difficult to ensure the uniformity of the mixing between the anesthetic gas and oxygen, making it difficult to accurately detect the concentration of the anesthetic gas. Therefore, we propose a clinical anesthetic gas concentration control device. Summary of the Invention

[0005] The purpose of this invention is to provide a clinical anesthetic gas concentration control device to solve the problems in the prior art where adding all the anesthetic gas and oxygen at once makes it difficult for the anesthetic gas to mix quickly with the oxygen, thus affecting the mixing effect. Furthermore, simply using a stirring plate to mix makes it difficult to ensure the uniformity of the mixing between the anesthetic gas and oxygen, thus making it difficult to control the concentration of the anesthetic gas.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a clinical anesthetic gas concentration control device, comprising a trolley unit, wherein a concentration control unit for controlling the concentration of anesthetic gas is disposed externally on the trolley unit, the concentration control unit comprising:

[0007] A drug vaporization mechanism, which is mounted on a trolley unit, is used to vaporize injected anesthetic into anesthetic gas;

[0008] An oxygen input mechanism is provided on the trolley unit and is used to store oxygen.

[0009] A gas mixing mechanism is provided on the trolley unit. The gas mixing mechanism is connected to the anesthetic vaporization mechanism and the oxygen input mechanism respectively. The gas mixing mechanism is used to mix the anesthetic gas output from the anesthetic vaporization mechanism with the oxygen output from the oxygen input mechanism.

[0010] An exhaust gas collection mechanism is provided on a trolley unit and is connected to a gas mixing mechanism. The exhaust gas collection mechanism is used to collect oxygen that continues to be injected after the gas mixing mechanism has finished mixing.

[0011] Preferably, the gas mixing mechanism includes an outer cylinder, which is fixedly installed on a trolley unit. A partition is fixedly installed inside the outer cylinder, dividing the interior of the outer cylinder into a mixing chamber and a filtering chamber from top to bottom. An inner mixing cylinder is fixedly installed on the top of the partition inside the mixing chamber. A gas concentration sensor is fixedly installed on the inner wall of the inner mixing cylinder. Several connecting pipes are fixedly connected between the inner mixing cylinder and the filtering chamber. A filter element is fixedly installed inside the filtering chamber. An anesthetic gas output pipe is fixedly installed at one end of the filtering chamber.

[0012] Preferably, the gas mixing mechanism further includes a vibrating mixing component for preliminary mixing of anesthetic gas and oxygen through low-frequency resonance. The vibrating mixing component includes a resonant tube fixedly installed around the outer wall of the mixing inner cylinder. The resonant tube has a hollow internal structure and a resonant plate is disposed inside the resonant tube. One end of the resonant plate is fixedly installed on the outer wall of the mixing inner cylinder, and the other end of the resonant plate is suspended. An air outlet pipe is fixedly connected to the top of the resonant tube, and a nozzle is fixedly installed at one end of the air outlet pipe. An air inlet pipe is fixedly installed at the bottom of the resonant tube. A flow guide hood for uniformly guiding the anesthetic gas and oxygen into the interior of each resonant tube is fixedly installed at the end of the air inlet pipe away from the resonant tube. The flow guide hood is fixedly installed on the outer wall of the mixing inner cylinder, and a perforated plate is fixedly installed inside the flow guide hood.

[0013] Preferably, the gas mixing mechanism further includes a stirring and mixing assembly for further mixing the anesthetic gas and oxygen inside the mixing inner cylinder. The stirring and mixing assembly includes a rotating rod rotatably installed inside the mixing inner cylinder. The rotating rod has an open top and a hollow internal structure. A boss is fixedly installed on the outer edge of the top of the rotating rod. A groove is formed at the top opening of the rotating rod. Several arc-shaped tubes are fixedly installed on the outer wall of the rotating rod near the bottom end, and the gas outlet direction of the several arc-shaped tubes is the same. Several stirring blades are fixedly installed on the outside of the rotating rod. A limiting block is fixedly installed on the outer wall of the rotating rod at the top of the inner cylinder. A limiting sleeve is rotatably installed on the outside of the limiting block. The limiting sleeve is fixedly installed at the top of the inner cylinder.

[0014] Preferably, the gas mixing mechanism further includes a drive assembly for driving the stirring and mixing component to operate by the airflow of anesthetic gas and oxygen. The drive assembly includes an outer shell fixedly installed at the top of the outer cylinder. An annular plate is fixedly installed inside the outer shell. A conical plate is fixedly installed at the top of the annular plate. The end face of the conical plate near the boss is flush with the end face of the boss. A sealing component for opening or closing the top opening of the rotating rod is fixedly installed at the top of the outer shell. A turbine is rotatably installed outside the sealing component. The air outlet direction of the nozzles is all towards the arc-shaped opening direction of the turbine blades. A number of support rods are fixedly connected between the bottom end of the turbine and the top end of the boss. A number of branch rods are fixedly installed on both sides of the outer wall of the support rods.

[0015] Preferably, the sealing component includes a sleeve fixedly installed at the top of the inner part of the outer shell, an electromagnet fixedly installed at the top of the inner part of the sleeve, an adsorption plate for the electromagnet to attract is slidably installed inside the sleeve, and the adsorption plate is made of iron. A piston rod is fixedly installed at the bottom of the adsorption plate, a spring is sleeved on the outside of the piston rod, the bottom of the piston rod extends to the outside of the sleeve and a movable plate is fixedly installed thereon, and a sealing plug that matches the groove is fixedly installed at the bottom of the movable plate.

[0016] Preferably, the trolley unit includes a frame, a roller seat is fixedly installed at the bottom of the frame, a support plate for placing the concentration control unit is fixedly installed on one side of the frame, a column is fixedly installed at the top of the frame, a display screen is fixedly installed at the top of the column, and a handrail is fixedly installed on the outside of the column.

[0017] Preferably, the anesthetic vaporization mechanism includes an anesthetic vaporizer and a first electric pump. The outlet of the anesthetic vaporizer is fixedly connected to a first anesthetic pipe. A first gas flow meter and a first solenoid valve are also fixedly installed outside the first anesthetic pipe. The end of the first anesthetic pipe away from the outlet of the anesthetic vaporizer is connected to the input end of the first electric pump. The output end of the first electric pump is fixedly connected to a second anesthetic pipe. One end of the second anesthetic pipe extends into the interior of the flow guide shroud and is located below the perforated plate.

[0018] Preferably, the oxygen input mechanism includes an oxygen tank and a second electric pump. The outlet of the oxygen tank is fixedly connected to a first oxygen pipe. A second gas flow meter and a second solenoid valve are fixedly installed on the outside of the first oxygen pipe. The end of the first oxygen pipe away from the outlet of the oxygen tank is connected to the input end of the second electric pump. The output end of the second electric pump is fixedly connected to a second oxygen pipe. One end of the second oxygen pipe extends into the interior of the flow guide and is located below the perforated plate.

[0019] Preferably, the waste gas collection mechanism includes a waste gas tank, the inlet end of which is fixedly connected to a waste gas recovery pipe, one end of which extends into the interior of the outer casing and is interconnected with the other end, and a third solenoid valve is fixedly installed at the end of the waste gas recovery pipe located inside the outer casing.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This invention utilizes a gas mixing mechanism. In practical use, the anesthetic vaporization mechanism and the oxygen input mechanism respectively input anesthetic gas and oxygen into the flow guide hood (the amount of anesthetic gas is less than the amount of oxygen). The anesthetic gas and oxygen pass through a perforated plate and are then blown into the resonant tube through the airflow inlet. Therefore, the anesthetic gas and oxygen are blown towards one end of the resonant plate, which generates low-frequency resonance under the action of the airflow. This causes low-frequency resonance of the anesthetic gas and oxygen in the resonant tube. The vibration disturbance can break the stability of the gas flow, making the anesthetic molecules and oxygen molecules mix more evenly, thus achieving preliminary mixing of the anesthetic gas and oxygen. Since there are four resonant tubes, the anesthetic gas and oxygen in the four resonant tubes can be initially mixed simultaneously. Then, the anesthetic gas and oxygen in the four resonant tubes are concentrated and discharged into the mixing inner cylinder for further stirring and mixing, which can improve the mixing efficiency of the anesthetic gas and oxygen, thereby ensuring the uniformity of the mixing of the anesthetic gas and oxygen. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a clinical anesthetic gas concentration control device.

[0023] Figure 2A three-dimensional view of the concentration control unit of a clinical anesthetic gas concentration control device;

[0024] Figure 3 A three-dimensional view of the anesthetic vaporization mechanism and oxygen input mechanism of a clinical anesthetic gas concentration control device;

[0025] Figure 4 A schematic cross-sectional view of the gas mixing mechanism in a clinical anesthetic gas concentration control device.

[0026] Figure 5 A partial cross-sectional schematic diagram of the vibration mixing component of a clinical anesthetic gas concentration control device;

[0027] Figure 6 A three-dimensional view of the mixing inner cylinder of a clinical anesthetic gas concentration control device;

[0028] Figure 7 This is a partial cross-sectional schematic diagram of the mixing inner cylinder of a clinical anesthetic gas concentration control device.

[0029] Figure 8 This is a partial cross-sectional schematic diagram of the drive component of a clinical anesthetic gas concentration control device.

[0030] Figure 9 A first-person perspective stereoscopic view of the turbine of a clinical anesthetic gas concentration control device.

[0031] Figure 10 A second-view perspective stereoscopic view of the turbine of a clinical anesthetic gas concentration control device.

[0032] Figure 11 This is a schematic cross-sectional view of the sealing component of a clinical anesthetic gas concentration control device.

[0033] [Figure Labels]

[0034] In the diagram: 10-Frame; 11-Roller seat; 12-Bearing plate; 13-Column; 14-Handrail; 15-Display screen; 20-Anesthetic vaporization mechanism; 21-Anesthetic vaporizer; 22-First electric pump; 23-First anesthetic pipeline; 24-Second anesthetic pipeline; 25-First gas flow meter; 26-First solenoid valve; 30-Oxygen input mechanism; 31-Oxygen tank; 32-Second electric pump; 33-First oxygen pipeline; 34-Second oxygen pipeline; 35-Second gas flow meter; 36-Second solenoid valve; 40-Gas mixing mechanism; 41-Outer cylinder; 411-Mixing chamber; 412-Filtering chamber; 42-Mixing inner cylinder; 43-Baffle; 44-Vibration mixing assembly; 441-Resonance tube; 442-Airflow inlet pipe; 443-Airflow outlet pipe; 444-Nozzle; 4 45-Flow guide; 446-Perforated plate; 447-Resonant plate; 45-Drive assembly; 451-Outer shell; 452-Annular plate; 453-Conical plate; 454-Turbine; 455-Sealing component; 4551-Sleeve; 4552-Electromagnet; 4553-Adsorption plate; 4554-Piston rod; 4555-Spring; 4556-Moving plate; 4557-Sealing plug; 456-Support rod; 457-Branch rod; 46-Mixing assembly; 461-Rotating rod; 462-Mixing blade; 463-Arc-shaped tube; 464-Boss; 465-Groove; 466-Limiting block; 467-Limiting sleeve; 47-Gas concentration sensor; 48-Connecting pipe; 49-Anesthetic gas output pipe; 50-Waste gas collection mechanism; 51-Waste gas tank; 52-Waste gas recovery pipe.

[0035] As shown in the figure, specific structures and devices are labeled in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0036] The present invention provides a clinical anesthetic gas concentration control device with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0037] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0038] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0039] It is understood that the meanings of “on”, “above” and “above” in this disclosure should be interpreted in the broadest sense, such that “on” means not only “directly on” something, but also includes something with an intermediary feature or layer, and that “above” or “above” means not only “on” something, but also includes something “above” or “above” without an intermediary feature or layer.

[0040] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0041] like Figure 1 and Figure 2As shown, the present invention provides a technical solution: a clinical anesthetic gas concentration control device, including a trolley unit, with a concentration control unit externally disposed on the trolley unit for controlling the concentration of anesthetic gas. The concentration control unit includes: an anesthetic evaporation mechanism 20, disposed on the trolley unit, for evaporating injected anesthetic into anesthetic gas; an oxygen input mechanism 30, disposed on the trolley unit, for storing oxygen; a gas mixing mechanism 40, disposed on the trolley unit, interconnected with both the anesthetic evaporation mechanism 20 and the oxygen input mechanism 30, for mixing the anesthetic gas output from the anesthetic evaporation mechanism 20 with the oxygen output from the oxygen input mechanism 30 and controlling their concentration; and a waste gas collection mechanism 50, disposed on the trolley unit, interconnected with the gas mixing mechanism 40, for collecting any oxygen that continues to be injected after the gas mixing mechanism 40 has finished mixing.

[0042] In the preferred technical solution of this embodiment, such as Figure 4 , Figure 6 and Figure 7 As shown, the gas mixing mechanism 40 includes an outer cylinder 41, which is fixedly mounted on the top of the support plate 12 on the trolley unit. A partition 43 is fixedly mounted inside the outer cylinder 41, dividing the interior of the outer cylinder 41 into a mixing chamber 411 and a filtering chamber 412 from top to bottom. An inner mixing cylinder 42, fixedly mounted on the top of the partition 43, is disposed inside the mixing chamber 411. A gas concentration sensor 47 is fixedly mounted on the inner wall of the inner mixing cylinder 42 to detect the concentration of anesthetic gas within the inner mixing cylinder 42. Four connecting pipes 48 are fixedly connected between the inner mixing cylinder 42 and the filtering chamber 412. A fourth solenoid valve (not shown in the figure) is fixedly mounted at one end of each connecting pipe near the inner mixing cylinder 42. As shown in the figure, a filter element (not shown) is fixedly installed inside the filter chamber 412. The filter element can filter impurities and harmful substances in the anesthetic gas. An anesthetic gas output pipe 49 is fixedly installed at one end of the filter chamber 412. The anesthetic gas output pipe 49 is used to output the mixed anesthetic gas. The gas concentration sensor 47 is used to detect the concentration of the anesthetic gas in the mixing inner cylinder 42 and transmit the detected data information to the controller. The controller can understand the concentration of the mixed anesthetic gas based on the concentration information, open the fourth solenoid valve, and input the mixed anesthetic gas in the mixing inner cylinder 42 into the filter chamber 412 through the connecting pipe 48, and then supply gas through the anesthetic gas output pipe 49.

[0043] In the preferred technical solution of this embodiment, such as Figure 4 and Figure 5As shown, the gas mixing mechanism 40 also includes a vibrating mixing assembly 44 for preliminary mixing of anesthetic gas and oxygen through low-frequency resonance. The vibrating mixing assembly 44 includes a resonant tube 441 fixedly installed around the outer wall of the mixing inner cylinder 42. The resonant tube 441 has a hollow interior and a resonant plate 447 is disposed inside. The resonant plate 447 has an arc-shaped structure, with one end fixedly installed on the outer wall of the mixing inner cylinder 42 and the other end suspended. Figure 4 As shown, the resonant plate 447 is suspended with one end facing the airflow inlet pipe 442. Therefore, the gas blown in from the airflow inlet pipe 442 will blow towards the suspended end of the resonant plate 447. The top end of the resonant tube 441 is fixedly connected to the airflow outlet pipe 443. A nozzle 444 is fixedly installed at one end of the airflow outlet pipe 443. The bottom end of the resonant tube 441 is fixedly installed with the airflow inlet pipe 442. The end of the airflow inlet pipe 442 away from the resonant tube 441 is fixedly installed with a flow guide hood 445 for uniformly guiding the anesthetic gas and oxygen into the interior of each resonant tube 441. The flow guide hood 445 is fixedly installed on the outer wall of the mixing inner cylinder 42. A perforated plate 446 is fixedly installed inside the flow guide hood 445. The perforated plate 446 can ensure the uniformity of the anesthetic gas and oxygen entering the four resonant tubes 441.

[0044] The anesthetic vaporization mechanism 20 and the oxygen input mechanism 30 respectively input anesthetic gas and oxygen into the flow guide hood 445. The anesthetic gas and oxygen will pass through the porous plate 446 and then be blown into the resonant tube 441 through the airflow inlet pipe 442. Therefore, the anesthetic gas and oxygen will be blown towards one end of the resonant plate 447. The resonant plate 447 suspended at one end generates low-frequency resonance under the action of airflow, thereby causing low-frequency resonance of anesthetic gas and oxygen in the resonant tube 441. The stability of gas flow can be broken by vibration disturbance, so that anesthetic molecules and oxygen molecules are mixed more evenly, thus achieving the initial mixing of anesthetic gas and oxygen.

[0045] To elaborate further, since there are four resonant tubes 441, the anesthetic gas and oxygen in the four resonant tubes 441 can be initially mixed simultaneously. Then, the anesthetic gas and oxygen in the four resonant tubes 441 are concentrated and discharged into the mixing inner cylinder 42 for further stirring and mixing, which can improve the mixing efficiency and mixing effect of the anesthetic gas and oxygen.

[0046] It should be noted that, since the amount of oxygen in the anesthetic gas is greater than the amount of anesthetic, the amount of anesthetic gas entering the deflector 445 is less than the amount of oxygen.

[0047] In the preferred technical solution of this embodiment, such as Figure 7 and Figure 8As shown, the gas mixing mechanism 40 also includes a stirring and mixing assembly 46 for further mixing the anesthetic gas and oxygen inside the mixing inner cylinder 42. The stirring and mixing assembly 46 includes a rotating rod 461 rotatably installed inside the mixing inner cylinder 42. The rotating rod 461 has an open top and a hollow internal structure. A boss 464 is fixedly installed on the outer edge of the top of the rotating rod 461. A groove 465 is opened at the top opening of the rotating rod 461. Several arc-shaped tubes 463 are fixedly installed on the outer wall of the rotating rod 461 near the bottom. The four arc-shaped tubes 463 have the same gas outlet direction. Several stirring blades 462 are fixedly installed on the outside of the rotating rod 461. A limiting block 466 is fixedly installed on the outer wall of the rotating rod 461 at the top of the inner cylinder 41. A limiting sleeve 467 is rotatably installed on the outside of the limiting block 466. The limiting sleeve 467 is fixedly installed on the top of the inner cylinder 41.

[0048] Driven by the drive assembly 45, the rotating rod 461 can rotate. At the same time, the initially mixed anesthetic gas and oxygen will enter the rotating rod 461 from the opening at the top of the rotating rod 461, and then be sprayed out by the four arc-shaped tubes 463. The sprayed anesthetic gas and oxygen will be concentrated in the mixing inner cylinder 42. Meanwhile, the rotation of the rotating rod 461 will also drive the stirring blades 462 to stir and mix the initially mixed anesthetic gas and oxygen again, which can further ensure the uniformity of the mixing of anesthetic gas and oxygen.

[0049] In the preferred technical solution of this embodiment, such as Figure 9 and Figure 10 As shown, the gas mixing mechanism 40 also includes a drive assembly 45 for driving the stirring and mixing assembly 46 to operate by the airflow of anesthetic gas and oxygen. The drive assembly 45 includes an outer shell 451 fixedly installed at the top of the outer cylinder 41. An annular plate 452 is fixedly installed inside the outer shell 451. A conical plate 453 is fixedly installed at the top of the annular plate 452. The end face of the conical plate 453 near the boss 464 is flush with the end face of the boss 464. A sealing component 455 for opening or closing the top opening of the rotating rod 461 is fixedly installed at the top of the outer shell 451. A turbine 454 is rotatably installed outside the sealing component 455. The air outlet direction of the nozzle 444 is all towards the arc-shaped opening direction of the turbine 454 blades. Several support rods 456 are fixedly connected between the bottom end of the turbine 454 and the top end of the boss 464. Several branch rods 457 are fixedly installed on both sides of the outer wall of the support rods 456.

[0050] The anesthetic gas and oxygen ejected from nozzle 444 impact the blades of turbine 454, causing turbine 454 to rotate. Since turbine 454 and rotating rod 461 are fixedly connected by support rod 456, the rotation of turbine 454 drives rotating rod 461 to rotate. The rotation of turbine 454 also generates a downward airflow, which blows the anesthetic gas and oxygen inside outer shell 451 downward, accelerating their entry into rotating rod 461 and preventing residual anesthetic gas and oxygen inside outer shell 451. Furthermore, the rotation of support rod 456 also drives branch rod 457 to stir the anesthetic gas and oxygen inside outer shell 451, thus further improving the mixing effect of anesthetic gas and oxygen inside outer shell 451.

[0051] To expand further, such as Figure 6 As shown, the diameter of the resonant tube 441 is larger than the diameter of the air outlet tube 443. Therefore, when the gas in the resonant tube 44 enters the air outlet tube 443, the gas velocity will increase due to the reduction in the cross-sectional area of ​​the tube. At the same time, since the outlet diameter of the nozzle 444 is smaller than the diameter of the air outlet tube 443, the ejected anesthetic gas and oxygen will have a certain velocity. Therefore, the rotation of the rotating rod 461 can be driven by the airflow of anesthetic gas and oxygen, without the need for an additional motor. This reduces energy consumption and avoids the noise generated by the motor affecting the operating room environment.

[0052] In the preferred technical solution of this embodiment, such as Figure 11 As shown, the sealing component 455 includes a sleeve 4551 fixedly installed inside the top of the outer casing 451. An electromagnet 4552 is fixedly installed inside the top of the sleeve 4551. An adsorption plate 4553 for adsorption by the electromagnet 4552 is slidably installed inside the sleeve 4551. The adsorption plate 4553 is made of iron. A piston rod 4554 is fixedly installed at the bottom of the adsorption plate 4553. A spring 4555 is sleeved on the outside of the piston rod 4554. The bottom of the piston rod 4554 extends to the outside of the sleeve 4551 and is fixedly installed with a moving plate 4556. A sealing plug 4557 that matches the groove 465 is fixedly installed at the bottom of the moving plate 4556. Since both the sealing plug 4557 and the groove 465 are circular structures, when the sealing plug 4557 is inserted into the groove 465, it will not affect the rotation of the rotating rod 461.

[0053] When the electromagnet 4552 is energized, it generates a magnetic force, which attracts the adsorption plate 4553. The upward movement of the adsorption plate 4553 pulls the moving plate 4556 upward through the piston rod 4554, and at the same time compresses the spring 4555, which pulls the sealing plug 4557 out of the groove 465. The top opening of the rotating rod 461 is in the open state. When the electromagnet 4552 is de-energized and loses its magnetic force, the moving plate 4556 moves downward under the elastic force of the spring 4555, which inserts the sealing plug 4557 into the groove 465. The top opening of the rotating rod 461 is in the closed state.

[0054] It should be noted that when the set amount of anesthetic gas and oxygen has not all entered the mixing inner cylinder 42, the sealing plug 4557 is away from the groove 465 at the top of the rotating rod 461. At this time, the top opening of the rotating rod 461 is open, and the third solenoid valve on the exhaust gas recovery pipe 52 is closed. Therefore, the anesthetic gas and oxygen will enter the rotating rod 461. After the set amount of anesthetic gas and oxygen has been injected, the sealing plug 4557 is inserted into the groove 465. At this time, the top opening of the rotating rod 461 is closed, and the third solenoid valve on the exhaust gas recovery pipe 52 is open. Therefore, the mixing inner cylinder 42 can be sealed. At the same time, oxygen can be continuously input through the oxygen input mechanism 30. The oxygen impacts the blades of the turbine 454, which can still drive the turbine 454 to rotate. Therefore, the rotation of the rotating rod 461 can be continuously ensured, and the stirring blades 462 can continue to stir the anesthetic gas in the mixing inner cylinder 42 for more than ten minutes to prevent the anesthetic gas that finally enters the mixing inner cylinder 42 from not being mixed evenly.

[0055] In the preferred technical solution of this embodiment, such as Figure 1 As shown, the trolley unit includes a frame 10. Inside the frame 10, a controller (not shown) for controlling the operation of the concentration control unit is fixedly installed. The controller is electrically connected to the display screen 15, the first electric pump 22, the first gas flow meter 25, the first solenoid valve 26, the second electric pump 32, the second gas flow meter 35, the second solenoid valve 36, the gas concentration sensor 47, and the electromagnet 4552. A roller seat 11 is fixedly installed at the bottom of the frame 10. A support plate 12 for placing the concentration control unit is fixedly installed on one side of the frame 10. A column 13 is fixedly installed at the top of the frame 10. A display screen 15 is fixedly installed at the top of the column 13. The display screen 15 can display the concentration of anesthetic gas in real time. A handrail 14 is fixedly installed on the outside of the column 13. The trolley unit facilitates the movement of the concentration control unit, improving the ease of use.

[0056] In the preferred technical solution of this embodiment, such as Figure 3As shown, the anesthetic vaporization mechanism 20 includes an anesthetic vaporizer 21 and a first electric pump 22. The anesthetic vaporizer 21 and the first electric pump 22 are respectively fixedly installed on the top of the support plate 12. The air inlet of the anesthetic vaporizer 21 is connected to a pipe for injecting anesthetic (not shown in the figure). The air outlet of the anesthetic vaporizer 21 is fixedly connected to a first anesthetic pipe 23. A first gas flow meter 25 and a first solenoid valve 26 are also fixedly installed on the outside of the first anesthetic pipe 23. One end of the first anesthetic pipe 23 away from the air outlet of the anesthetic vaporizer 21 is connected to the input end of the first electric pump 22. The output end of the first electric pump 22 is fixedly connected to a second anesthetic pipe 24. One end of the second anesthetic pipe 24 extends into the interior of the flow guide shroud 445 and is located below the perforated plate 446.

[0057] The anesthetic vaporizer 21 evaporates the anesthetic into anesthetic gas, which is then drawn into the first anesthetic pipeline 23 by the first electric pump 22, and then injected into the flow guide shroud 445 by the second anesthetic pipeline 24. The output metering of the anesthetic gas can be monitored in real time by the first gas flow meter 25.

[0058] In the preferred technical solution of this embodiment, such as Figure 3 As shown, the oxygen input mechanism 30 includes an oxygen tank 31 and a second electric pump 32. The oxygen tank 31 and the second electric pump 32 are respectively fixedly installed on the top of the support plate 12. The outlet of the oxygen tank 31 is fixedly connected to a first oxygen pipe 33. A second gas flow meter 35 and a second solenoid valve 36 are fixedly installed on the outside of the first oxygen pipe 33. The end of the first oxygen pipe 33 away from the outlet of the oxygen tank 31 is connected to the input end of the second electric pump 32. The output end of the second electric pump 32 is fixedly connected to a second oxygen pipe 34. One end of the second oxygen pipe 34 extends into the interior of the flow guide shroud 445 and is located below the perforated plate 446.

[0059] The second electric pump 32 draws oxygen from the oxygen tank 31 into the first oxygen pipeline 33, and then injects it into the flow guide 445 through the second oxygen pipeline 34. The output measurement of oxygen can be monitored in real time through the second gas flow meter 35.

[0060] It should be noted that the amount of anesthetic gas entering the mixing inner cylinder 42 can be controlled by opening and closing the first solenoid valve 26, and the amount of oxygen gas entering the mixing inner cylinder 42 can be controlled by opening and closing the second solenoid valve 36.

[0061] In the preferred technical solution of this embodiment, such as Figure 2As shown, the waste gas collection mechanism 50 includes a waste gas tank 51, which is fixedly installed on the top of the support plate 12. The inlet end of the waste gas tank 51 is fixedly connected to a waste gas recovery pipe 52. One end of the waste gas recovery pipe 52 extends into the interior of the outer shell 451 and is interconnected. A third solenoid valve (not shown in the figure) is fixedly installed at the end of the waste gas recovery pipe 52 located inside the outer shell 451. The waste gas recovery pipe 52 can recover the oxygen that continues to be injected after the set amount of anesthetic gas and oxygen has been injected into the waste gas tank 51 for collection.

[0062] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0063] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A clinical anesthetic gas concentration control device, comprising a trolley unit, wherein a concentration control unit for controlling the concentration of anesthetic gas is externally disposed on the trolley unit, characterized in that: The concentration control unit includes: an anesthetic evaporation mechanism (20), which is mounted on a trolley unit and is used to evaporate injected anesthetic into anesthetic gas; an oxygen input mechanism (30), which is mounted on a trolley unit and is used to store oxygen; a gas mixing mechanism (40), which is mounted on a trolley unit and is connected to both the anesthetic evaporation mechanism (20) and the oxygen input mechanism (30), and is used to mix the anesthetic gas output from the anesthetic evaporation mechanism (20) with the oxygen output from the oxygen input mechanism (30); and a waste gas collection mechanism (50), which is mounted on a trolley unit and is connected to the gas mixing mechanism (40), and is used to collect any oxygen that continues to be injected after the gas mixing mechanism (40) has finished mixing. The gas mixing mechanism (40) includes an outer cylinder (41), which is fixedly installed on a trolley unit. A partition (43) is fixedly installed inside the outer cylinder (41). The partition (43) divides the interior of the outer cylinder (41) into a mixing chamber (411) and a filtering chamber (412) from top to bottom. A mixing inner cylinder (42) is fixedly installed at the top of the partition (43) inside the mixing chamber (411). A gas concentration sensor (47) is fixedly installed on the inner wall of the mixing inner cylinder (42). Several connecting pipes (48) are fixedly connected between the mixing inner cylinder (42) and the filtering chamber (412). A filter element is fixedly installed inside the filtering chamber (412). An anesthetic gas output pipe (49) is fixedly installed at one end of the filtering chamber (412). The gas mixing mechanism (40) further includes a vibrating mixing assembly (44) for preliminary mixing of anesthetic gas and oxygen through low-frequency resonance. The vibrating mixing assembly (44) includes a resonant tube (441) fixedly installed around the outer wall of the mixing inner cylinder (42). The resonant tube (441) has a hollow structure inside and a resonant plate (447) is provided inside the resonant tube (441). One end of the resonant plate (447) is fixedly installed on the outer wall of the mixing inner cylinder (42), and the other end of the resonant plate (447) is suspended. An air outlet pipe (443) is fixedly connected to the top end. A nozzle (444) is fixedly installed at one end of the air outlet pipe (443). An air inlet pipe (442) is fixedly installed at the bottom end of the resonant tube (441). A flow guide hood (445) for uniformly guiding anesthetic gas and oxygen into the interior of each resonant tube (441) is fixedly installed at the end of the air inlet pipe (442) away from the resonant tube (441). The flow guide hood (445) is fixedly installed on the outer wall of the mixing inner cylinder (42). A perforated plate (446) is fixedly installed inside the flow guide hood (445). The gas mixing mechanism (40) further includes a stirring and mixing assembly (46) for further mixing the anesthetic gas and oxygen inside the mixing inner cylinder (42). The stirring and mixing assembly (46) includes a rotating rod (461) rotatably mounted inside the mixing inner cylinder (42). The rotating rod (461) has an open top and a hollow interior. A boss (464) is fixedly installed on the outer edge of the top of the rotating rod (461). A groove (465) is provided at the top opening of the rotating rod (461). Several arc-shaped tubes (463) are fixedly installed on the outer wall of the rotating rod (461) near the bottom end, and the air outlet direction of the several arc-shaped tubes (463) is the same. Several stirring blades (462) are fixedly installed on the outside of the rotating rod (461). A limiting block (466) is fixedly installed on the outer wall of the rotating rod (461) at the top inside the outer cylinder (41). A limiting sleeve (467) is rotatably installed on the outside of the limiting block (466), and the limiting sleeve (467) is fixedly installed at the top inside the outer cylinder (41).

2. The clinical anesthetic gas concentration control device according to claim 1, characterized in that: The gas mixing mechanism (40) further includes a drive assembly (45) for driving the stirring and mixing assembly (46) to operate by means of an airflow of anesthetic gas and oxygen. The drive assembly (45) includes an outer shell (451) fixedly installed at the top of the outer cylinder (41). An annular plate (452) is fixedly installed inside the outer shell (451). A conical plate (453) is fixedly installed at the top of the annular plate (452). The end face of the conical plate (453) near the boss (464) is flush with the end face of the boss (464). The outer casing (451) has a sealing component (455) fixedly installed at its top, which is used to open or close the top opening of the rotating rod (461). A turbine (454) is rotatably installed on the outside of the sealing component (455). The air outlet direction of the nozzle (444) is all towards the arc-shaped opening direction of the turbine (454) blades. Several support rods (456) are fixedly connected between the bottom end of the turbine (454) and the top end of the boss (464). Several branch rods (457) are fixedly installed on both sides of the outer wall of the support rods (456).

3. The clinical anesthetic gas concentration control device according to claim 2, characterized in that: The sealing component (455) includes a sleeve (4551) fixedly installed inside the top of the outer shell (451). An electromagnet (4552) is fixedly installed inside the top of the sleeve (4551). An adsorption plate (4553) for adsorption by the electromagnet (4552) is slidably installed inside the sleeve (4551). The adsorption plate (4553) is made of iron. A piston rod (4554) is fixedly installed at the bottom of the adsorption plate (4553). A spring (4555) is sleeved on the outside of the piston rod (4554). The bottom of the piston rod (4554) extends to the outside of the sleeve (4551) and a movable plate (4556) is fixedly installed thereon. A sealing plug (4557) that matches the groove (465) is fixedly installed at the bottom of the movable plate (4556).

4. The clinical anesthetic gas concentration control device according to claim 1, characterized in that: The trolley unit includes a frame (10), a roller seat (11) is fixedly installed at the bottom of the frame (10), a support plate (12) for placing the concentration control unit is fixedly installed on one side of the frame (10), a column (13) is fixedly installed at the top of the frame (10), a display screen (15) is fixedly installed at the top of the column (13), and a handrail (14) is fixedly installed on the outside of the column (13).

5. The clinical anesthetic gas concentration control device according to claim 1, characterized in that: The anesthetic vaporization mechanism (20) includes an anesthetic vaporizer (21) and a first electric pump (22). The outlet of the anesthetic vaporizer (21) is fixedly connected to a first anesthetic pipe (23). A first gas flow meter (25) and a first solenoid valve (26) are also fixedly installed outside the first anesthetic pipe (23). One end of the first anesthetic pipe (23) away from the outlet of the anesthetic vaporizer (21) is connected to the input end of the first electric pump (22). The output end of the first electric pump (22) is fixedly connected to a second anesthetic pipe (24). One end of the second anesthetic pipe (24) extends into the interior of the flow guide shroud (445) and is located below the perforated plate (446).

6. The clinical anesthetic gas concentration control device according to claim 1, characterized in that: The oxygen input mechanism (30) includes an oxygen tank (31) and a second electric pump (32). The outlet of the oxygen tank (31) is fixedly connected to a first oxygen pipe (33). A second gas flow meter (35) and a second solenoid valve (36) are fixedly installed on the outside of the first oxygen pipe (33). One end of the first oxygen pipe (33) away from the outlet of the oxygen tank (31) is connected to the input end of the second electric pump (32). The output end of the second electric pump (32) is fixedly connected to a second oxygen pipe (34). One end of the second oxygen pipe (34) extends into the interior of the flow guide shroud (445) and is located below the perforated plate (446).

7. The clinical anesthetic gas concentration control device according to claim 2, characterized in that: The waste gas collection mechanism (50) includes a waste gas tank (51), and a waste gas recovery pipe (52) is fixedly connected to the inlet end of the waste gas tank (51). One end of the waste gas recovery pipe (52) extends into the interior of the outer shell (451) and is interconnected with it. A third solenoid valve is fixedly installed at the end of the waste gas recovery pipe (52) located inside the outer shell (451).

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