WO2021134371A1 - Anesthesia evaporator, anesthesia machine, and control method for anesthesia evaporator - Google Patents

Abstract

Disclosed are an anesthesia evaporator (100), an anesthesia machine, and a control method for an anesthesia evaporator (100). The evaporator (100) comprises a housing (10), a drug storage tank (30), a cover body (20) and a dosing port (31). The evaporator further comprises: a drug tank pressure control assembly (40), the drug tank pressure control assembly (40) having a first state in which the pressure in the drug storage tank (30) is maintained, and a second state in which the pressure in the drug storage tank (30) is released; and a linkage mechanism (50), the linkage mechanism (50) being driven when a user starts a dosing operation, so as to drive the drug tank pressure control assembly (40) to switch from the first state to the second state. The drug tank pressure control assembly (40) comprises a ventilation pipe (43) in communication with the drug storage tank (30), wherein a pressure sensor (60) and a first switch valve (70) are provided on the ventilation pipe (43). When the drug tank pressure control assembly (40) is in the first state, the first switch valve (70) is opened, and the drug tank pressure control assembly (40) supplies gas to the drug storage tank (30) through the ventilation pipe (43); and when the drug tank pressure control assembly (40) is switched to the second state, the first switch valve (70) is opened, and the pressure in the drug storage tank (30) is released by means of the ventilation pipe (43). The present invention can prevent gas mixed with an anesthetic from being released from the position of the cover body (20) such that same affects an anesthesia operation of the user.

Description

Anesthesia vaporizer, anesthesia machine and control method of anesthesia vaporizer Technical field

This application relates to the technical field of medical devices, and in particular to an anesthesia vaporizer, an anesthesia machine, and a control method of the anesthesia vaporizer.

Background technique

For the EFI electronic evaporator, the driving pressure of the anesthetic in the dosing pool is required to be applied during operation. During the operation, if the amount of medicine inside the vaporizer is insufficient, the doctor will add medicine to the vaporizer to prevent the patient from waking up during the operation.

Because there is a certain driving pressure inside the medicine tank, the anesthetic liquid may be ejected from the medicine port under the action of the driving force at the moment when the medicine injection port is opened, causing harm to the medical staff. Therefore, the inside of the medicine tank needs to be filled before the medicine is added. The pressure is released, and then the medicine bottle is inserted to do the medicine. If the pressure in the medicine tank cannot be discharged in time, there will be a risk of spraying the medicine at this time, which will bring the risk of the medicine operation.

Summary of the invention

In the first aspect, the present application provides an anesthesia vaporizer, including a shell, a medicine storage tank, a cover, and a medicine addition port connecting the medicine storage tank between the covers, and further includes:

An injection pipe, one end is connected to the lower side of the medicine storage tank, and the other end is provided with an ejector;

The medicine tank pressure control component is connected to the medicine storage tank, and the medicine tank pressure control component has a first state to maintain the pressure in the medicine storage tank at a working pressure, and a second state to discharge the pressure in the medicine storage tank ；

A linkage mechanism, which is driven by the user to start the dosing operation of the anesthesia vaporizer to drive the pool pressure control assembly to switch from the first state to the second state;

Wherein, the medicine pool pressure control assembly includes a vent pipe communicating with the medicine reservoir, a pressure sensor and a first switch valve are arranged on the vent pipe, and the first switch valve is arranged on the pressure sensor and the pressure sensor. Between the storage tanks;

When the medicine pool pressure control assembly is in the first state, the first on-off valve is opened, and the medicine pool pressure control assembly supplies air to the medicine pool through the vent pipe to maintain the pressure in the medicine pool For work pressure;

When the medicine tank pressure control assembly is switched from the first state to the second state, the first on-off valve is opened, and the medicine storage tank discharges pressure through the vent pipe.

In the second aspect, the present application provides an anesthesia machine, including: the aforementioned anesthesia vaporizer.

In a third aspect, the present application provides a method for controlling the aforementioned anesthesia vaporizer, the method including:

Acquiring the pressure in the vent pipe detected by the pressure sensor;

If the pressure in the vent pipe drops to a first pressure threshold, the first switch valve is closed to block the gas in the medicine storage tank from venting through the vent pipe.

The embodiment of the application provides an anesthesia vaporizer, an anesthesia machine, and an anesthesia vaporizer control method. The linkage mechanism is driven by the user to start the dosing operation of the anesthesia vaporizer to drive the pool pressure control assembly to switch from the first state to the second state. State, the first state can keep the pressure in the medicine storage tank of the anesthetic vaporizer at the working pressure, and the first on-off valve is open when switching to the second state, so that the pressure in the medicine storage tank can be discharged; thereby preventing the mixing of anesthetics The gas is released from the position of the cover, which affects the user's anesthesia operation.

It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the disclosure of this application.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. Ordinary technicians can obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic structural diagram of an anesthesia vaporizer according to an embodiment of the present application;

Figure 2 is a schematic diagram of the structure of the anesthesia vaporizer in Figure 1 when adding medicine;

Figure 3 is a schematic structural view of another embodiment of an anesthesia vaporizer;

Fig. 4 is a schematic diagram of the structure of the anesthesia vaporizer in Fig. 3 when adding medicine;

Fig. 5 is a schematic structural diagram of another embodiment of an anesthesia vaporizer;

Fig. 6 is a schematic diagram of the structure of the anesthesia vaporizer in Fig. 5 when adding medicine;

Fig. 7 is a schematic flowchart of a method for controlling an anesthesia vaporizer according to an embodiment of the present application.

Description of reference signs:

100. Anesthesia evaporator; 10. Shell; 11. Opening; 20. Cover; 21. Connecting rod; 30. Medicine storage tank; 31. Dosing port; 311. Chute; 32. Airtight valve; 33. Liquid Position gauge; 40, medicine pool pressure control component; 41, first pipeline; 42, second pipeline; 43, ventilation pipeline; 44, valve body; 45, valve stem assembly; 451, elastic part; 452, valve stem; 50 , Linkage mechanism; 51, cam; 52, rotating shaft; 54, transmission body; 55, connecting body; 56, fixed fulcrum; 60, pressure sensor; 70, first on-off valve; 80, injection pipe; 81, second on-off valve 82. Ejector; 90. Evaporation chamber; 91. Air outlet; 92. Air inlet;

a. Driving gas source; b. Waste gas treatment system;

200. Dosing container; 210. Cooperating part.

Detailed ways

The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The flowchart shown in the drawings is only an example, and does not necessarily include all contents and operations/steps, nor does it have to be executed in the described order. For example, some operations/steps can also be decomposed, combined or partially combined, so the actual execution order may be changed according to actual conditions.

Hereinafter, some embodiments of the present application will be described in detail with reference to the accompanying drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

Please refer to FIG. 1 and FIG. 2. FIG. 1 and FIG. 2 are schematic diagrams of an anesthesia vaporizer 100 provided by an embodiment of the present application.

The anesthesia vaporizer 100 can be applied to an anesthesia machine. The anesthesia vaporizer 100 can be fixedly connected to the host of the anesthesia machine, or can be detachably connected to the host of the anesthesia machine.

As shown in Fig. 1, the anesthesia vaporizer 100 includes a housing 10, a medicine storage tank 30, a cover body 20, and a medicine addition port 31 connecting the medicine storage tank 30 between the cover bodies 20. As shown in FIG. The cover 20 is movably connected to the housing 10, for example.

Exemplarily, as shown in FIG. 2, the casing 10 is provided with an opening 11, and the cover body 20 is rotatably connected to the opening 11 of the casing 10.

Exemplarily, the top of the medicine storage tank 30 is provided with a medicine adding port 31, and the medicine adding port 31 is arranged opposite to the cover body 20. When the cover 20 rotates relative to the casing 10 to open the opening 11 of the casing 10, the medicine adding port 31 is exposed from the opening 11, which facilitates the user to add medicine to the medicine storage tank 30 through the medicine adding port 31.

The medicine storage pool 30 can be filled with anesthetics. Specifically, the liquid level of the anesthetic agent is lower than the height of the connection between the medicine pool pressure control assembly 40 and the medicine storage pool 30, which can prevent the anesthetic agent from entering the medicine pool pressure control assembly 40 from the medicine pool 30.

In some embodiments, as shown in FIG. 1, the anesthesia vaporizer 100 further includes a level gauge 33 for detecting the liquid level in the medicine storage tank 30. The liquid level gauge 33 can display the liquid level of the anesthetic. When the user finds that the liquid level is low and needs to be added, the anesthetic can be added to the drug storage tank 30 through the dosing port 31.

Exemplarily, as shown in FIG. 1, the anesthesia vaporizer 100 further includes a closed valve 32 accommodated in the dosing port 31 to realize the sealing of the medicine storage tank 30. Specifically, the closed valve 32 may be a one-way valve. The closed valve 32 is configured to allow the anesthetic agent to enter the medicine storage tank 30 from the medicine filling port 31, but not to allow the anesthetic agent to flow out of the medicine filling mouth 31 from the medicine tank 30.

As shown in FIG. 1, the anesthesia vaporizer 100 further includes a jet pipe 80, a medicine pool pressure control assembly 40 and a linkage mechanism 50.

Wherein, one end of the injection pipe 80 is connected to the lower side of the reservoir 30, and the other end is provided with an ejector 82.

Exemplarily, as shown in FIG. 1, the ejector 82 is located in the evaporation chamber 90 of the anesthesia vaporizer 100, and the anesthetic in the medicine storage tank 30 can be formed by spraying the ejector 82 in the form of a mist under the action of the high-pressure driving gas. The anesthetic gas fills the evaporation chamber 90. The evaporation chamber 90 is provided with an air outlet 91 and an air inlet 92. The carrier gas enters the evaporation chamber 90 through the air inlet 92, and is mixed with the anesthetic gas and discharged from the air outlet 91.

Specifically, the medicine storage tank 30, the medicine tank pressure control assembly 40 and the linkage mechanism 50 are accommodated in the space enclosed by the housing 10 and the cover 20.

Specifically, the medicine tank pressure control assembly 40 is connected to the medicine storage tank 30. The medicine tank pressure control assembly 40 has a first state in which the pressure in the medicine tank 30 is maintained at a working pressure, and a second state in which the pressure in the medicine tank 30 is discharged.

Exemplarily, the medicine tank pressure control assembly 40 is respectively connected with an external driving gas source a and the medicine storage tank 30.

Exemplarily, when the medicine tank pressure control assembly 40 is in the first state, air is supplied to the medicine tank 30 through the vent pipe 43 to maintain the pressure in the medicine tank 30 as the working pressure.

Specifically, the driving gas provided by the driving gas source a is continuously passed into the medicine storage tank 30 through the medicine tank pressure control assembly 40, so as to maintain the air pressure in the medicine storage tank 30 at a higher pressure required for work, so that the anesthetic is connected through The ejector 82 of the medicine storage tank 30 is sprayed in a mist shape.

Specifically, discharging the pressure in the medicine storage tank 30 refers to discharging the gas in the medicine storage tank 30 so that the pressure in the medicine storage tank 30 is reduced.

Specifically, the user's operation of starting the dosing of the anesthesia vaporizer 100 can drive the linkage mechanism 50 to drive the pool pressure control assembly 40 to switch from the first state to the second state.

Exemplarily, the medicine pool pressure control assembly 40 is connected to the linkage mechanism 50, and the operation action of the anesthesia vaporizer 100 during the dosing process can provide the driving force of the linkage mechanism 50, which can make the medicine pool pressure control assembly 40 change from the first state Switch to the second state.

Specifically, as shown in FIGS. 1 and 2, the medicine tank pressure control assembly 40 includes a vent pipe 43 communicating with the medicine storage tank 30. The medicine tank pressure control assembly 40 can make the vent pipe 43 communicate with the outside, so that the medicine storage tank 30 It can communicate with the outside through a vent pipe 43.

Exemplarily, a pressure sensor 60 and a first on-off valve 70 are provided on the ventilation pipe 43, and the first on-off valve 70 is provided between the pressure sensor 60 and the reservoir 30. Therefore, the pressure sensor 60 can detect the pressure in the air duct 43.

When the medicine pool pressure control assembly 40 is in the first state, the first on-off valve 70 is opened, and the medicine pool pressure control assembly 40 supplies air to the medicine pool 30 through the vent pipe 43 to maintain the pressure in the medicine pool 30 at the working pressure.

When the medicine tank pressure control assembly 40 switches from the first state to the second state, the first on-off valve 70 remains open, and the medicine tank 30 releases pressure through the vent pipe 43. Specifically, the medicine storage tank 30 may be connected to the outside through the vent pipe 43, and the gas in the medicine storage tank 30 may be discharged, so that the pressure in the medicine storage tank 30 is reduced.

For example, when the user opens the lid 20 of the anesthesia vaporizer 100 when the user performs a drug addition operation on the anesthesia vaporizer 100, the drug addition operation causes the drug pool pressure control assembly 40 to switch from the first state to the second state, so that the drug storage pool 30 is switched from the first state to the second state. The air pressure inside is reduced, so that the gas mixed with anesthetic can be prevented from being released through the cover 20, which affects the user's anesthesia operation. This process does not need to send pressure relief instructions through sensors, and pressure relief is more direct, safer and more reliable.

In some embodiments, as shown in FIG. 1, the medicine pool pressure control assembly 40 further includes a valve body 44, a first pipe 41, a second pipe 42 and a valve stem assembly 45.

One end of the first pipe 41 is connected to the first port of the valve body 44, and the other end is connected to the driving gas source a; one end of the second pipe 42 is connected to the second port of the valve body 44, and the other end is connected to the exhaust gas treatment system b. ; The third port of the valve body 44 is connected to the vent pipe 43.

Exemplarily, the valve stem assembly 45 can be driven by the linkage mechanism 50 to connect the first pipe 41 or the second pipe 42 with the ventilation pipe 43.

Exemplarily, the valve stem assembly 45 is partially contained in the valve body 44, and one end of the valve stem assembly 45 is connected to the inner wall of the valve body 44, and the other end is connected to the linkage mechanism 50. The linkage mechanism 50 drives one end of the valve stem assembly 45 to move along the inner wall of the valve body 44 to connect the first pipe 41 or the second pipe 42 with the ventilation pipe 43.

As shown in Figure 1, when the medicine pool pressure control assembly 40 is in the first state, the first pipe 41 is in communication with the vent pipe 43, so that the driving gas source a can pass through the first pipe 41 and the vent pipe 43 to the medicine storage pool 30 Into the gas. The air pressure in the medicine storage tank 30 is maintained at a relatively high air pressure required for work, so that the anesthetic is sprayed in a mist form through the ejector 82 connected to the medicine storage tank 30. At this time, the second duct 42 and the ventilation duct 43 are not connected.

As shown in FIG. 2, the operation of the user when starting to add medicine drives the linkage mechanism 50 to drive the medicine pool pressure control assembly 40 to switch from the first state to the second state. In the second state, the second pipe 42 is in communication with the vent pipe 43, and the first switch valve 70 is opened, so that the gas in the reservoir 30 can be discharged to the exhaust gas treatment system b through the vent pipe 43 and the second pipe 42 for treatment . The air pressure in the medicine storage tank 30 can be reduced and the discharged gas mixed with anesthetic can be prevented from affecting the user. At this time, the first duct 41 and the ventilation duct 43 are not connected.

In some embodiments, if the pressure sensor 60 detects that the pressure in the vent pipe 43 drops to the first pressure threshold, the first on-off valve 70 is closed to block the vent pipe 43, and the reservoir pressure control assembly 40 is in the third state.

In some embodiments, if the time for switching from the first state to the second state exceeds a preset threshold, the first on-off valve 70 may also be closed, and the reservoir pressure control component 40 is in the third state. Prevent long-term pressure relief, reduce the consumption of anesthetics, and prevent the increase in patient medical expenses.

When the medicine pool pressure control assembly 40 is in the third state, the first on-off valve 70 of the vent pipe 43 is in a closed state, and the vent pipe 43 is blocked. The medicine storage tank 30 is neither connected to the driving gas source a nor to the exhaust gas treatment system b. It is understandable that neither driving gas is provided to the medicine storage tank 30 to maintain its working pressure, nor is it connected to the medicine storage tank 30 The gas is discharged to the exhaust gas treatment system b.

Specifically, when the pressure in the vent pipe 43 drops to the first pressure threshold, the air pressure in the medicine storage tank 30 is also relatively low, which can prevent the gas from being released through the cover 20. When the pressure in the vent pipe 43 drops to the first pressure threshold, the first on-off valve 70 is controlled to close, so that the gas in the reservoir 30 stops being discharged to the exhaust gas treatment system b through the vent pipe 43 and the second pipe 42, and closes in time Cut off the pressure relief path of the anesthetic, reduce the consumption of the anesthetic, and prevent the increase of the patient's medical expenses.

Exemplarily, the first pressure threshold is 1 to 1.5 times the atmospheric pressure. Specifically, it can be 1 to 1.2 times the atmospheric pressure. Since anesthetics are usually relatively volatile, the pressure in the medicine storage tank 30 will be greater than the atmospheric pressure when the medicine storage tank 30 is used. Moreover, by setting the first pressure threshold to a value slightly larger than the atmospheric pressure, the gas in the liquid storage tank can be prevented from leaking through the filling port and the opening 11, and the time for pressure relief in the second state can also be reduced, and the consumption of anesthetics can be reduced.

Exemplarily, a second switch valve 81 may be further provided between the chemical storage tank 30 and the ejector 82 to control the on-off of the chemical storage tank 30 and the evaporation chamber 90. If the pressure sensor 60 detects that the pressure of the vent pipe 43 has dropped to the first pressure threshold, the second on-off valve 81 and/or the injector 82 are closed. In this way, it can be prevented that the ejector 82 cannot be closed when the system is abnormal, causing a large amount of anesthetic to be ejected into the mixing chamber, resulting in an excessively high concentration of anesthetic at the patient's end.

When the pressure in the medicine storage tank 30 drops to a lower pressure, the anesthetic agent cannot be sprayed as a mist through the ejector 82. By closing the second on-off valve 81 and/or the ejector 82, the anesthetic agent can be prevented from being sprayed. Consumption can also prevent the anesthetic in the form of droplets from entering the evaporation chamber 90 or passing through the air outlet 92 to the patient.

Exemplarily, when the pressure in the vent pipe 43 drops to the first pressure threshold, the user can safely add anesthetic to the medicine reservoir 30.

After the anesthetic is added, the user can perform an operation to end the addition, such as closing the cover 20.

In some embodiments, the user's operation to end the dosing of the anesthesia vaporizer 100 can drive the linkage mechanism 50 to drive the pool pressure control assembly 40 to switch from the third state to the fourth state.

Exemplarily, when the medicine pool pressure control assembly 40 is in the fourth state, the first pipe 41 is in communication with the vent pipe 43, so that the driving gas source a can supply air to the vent pipe 43 through the first pipe 41, and at this time, the first pipe 41 is in communication with the vent pipe 43. The on-off valve 70 is in the closed state. As the driving air source a supplies air to the air duct 43, the pressure in the air duct 43 rises. Exemplarily, if the pressure sensor 60 detects that the pressure in the vent pipe 43 rises to the second pressure threshold, the reservoir pressure control assembly 40 switches to the first state.

Specifically, switching the medicine pool pressure control component 40 from the fourth state to the first state includes: opening the first on-off valve 70.

Exemplarily, when the first switch valve 70 is opened to make the vent pipe 43 communicate with the medicine storage tank 30, since the pressure in the vent pipe 43 rises to the second pressure threshold, the air pressure in the medicine storage tank 30 can be prevented from being higher than the vent pipe The pressure inside 43 causes the gas mixed with anesthetic to enter the ventilation pipe 43 and even the medicine pool pressure control assembly 40.

Specifically, the second pressure threshold is not less than the first pressure threshold. It can be better prevented that the air pressure in the medicine storage tank 30 is higher than the pressure in the vent pipe 43 and the gas mixed with anesthetic agent enters the vent pipe 43 and even the medicine tank pressure control assembly 40.

Exemplarily, the second pressure threshold may be equal to the working pressure.

Exemplarily, if the pressure sensor 60 detects that the pressure of the vent pipe 43 has risen to the second pressure threshold, the second on-off valve 81 and the injector 82 may also be opened. At this time, the air pressure in the medicine storage tank 30 can make the anesthetic agent sprayed in a mist form through the ejector 82. In this way, the anesthesia vaporizer 100 automatically resumes work after the drug is added, without the user's additional operation, simplifies the operation process, is convenient to use, and improves the user experience.

In some embodiments, the anesthesia vaporizer 100 further includes a control circuit connected to the pressure sensor 60, the first on-off valve 70, the second on-off valve 81 and the ejector 82; the pressure sensor 60 transmits the detected pressure to the control The control circuit controls the second on-off valve 81, the first on-off valve 70, and the injector 82 to close or open.

In some embodiments, as shown in FIGS. 2 and 4, the user starts the dosing operation of the anesthesia vaporizer 100 by opening the lid 20. The opening of the lid 20 drives the linkage mechanism 50 to drive the medicine pool pressure control assembly 40 from the first The state switches to the second state.

Exemplarily, as shown in FIGS. 1 and 3, the user's operation to end the dosing of the anesthesia vaporizer 100 is to close the cover body 20, and the cover body 20 is closed to drive the linkage mechanism 50 to drive the medicine pool pressure control assembly 40 by the third The state switches to the fourth state.

Exemplarily, as shown in FIG. 4, the valve stem assembly 45 includes a valve stem 452, one end of the valve stem 452 is connected to the linkage mechanism 50, and the other end is connected to the inner wall of the valve body 44, and can move along the inner wall of the valve body 44.

Exemplarily, the valve stem assembly 45 may further include an elastic member 451. One end of the elastic member 451 is fixed to the valve stem 452, and the other end is fixed to the side wall of the valve body 44 to reset the relative relationship between the valve stem 452 and the valve body 44. position.

Exemplarily, as shown in FIGS. 1 and 2, the linkage mechanism 50 may be a cam 51 mechanism. One end of the cam 51 mechanism is slidably connected to the valve stem assembly 45 and the other end is fixedly connected to the cover 20.

When an anesthetic needs to be added, during the opening process of the cover 20, the cam 51 is driven to rotate, and the valve stem assembly 45 is pushed to move, thereby causing the pool pressure control assembly 40 to switch from the first state to the second state. Since the cam 51 mechanism is connected to the cover body 20, the cam 51 mechanism is driven to move during the process of opening the cover body 20 to realize mechanical pressure relief, so that the safety and reliability of the anesthesia vaporizer 100 is higher.

Specifically, as shown in FIG. 1, the cam 51 mechanism includes a cam 51 and a rotating shaft 52. The rotating shaft 52 is rotatably connected to the housing 10, and the cover 20 is fixedly provided with a connecting rod 21. The connecting rod 21 is fixedly connected to the rotating shaft 52. The cam 51 Fixed on the rotating shaft 52, the end of the valve stem assembly 45 is slidably connected to the edge of the cam 51.

Exemplarily, one end of the valve stem assembly 45 is slidably connected to the edge of the cam 51. When the cover 20 is opened, the connecting rod 21 drives the cam 51 to rotate relative to the housing 10, thereby driving the valve stem assembly 45 to move.

Referring to FIG. 2, when the dosing operation starts, the action of opening the cover body 20 can trigger the cam 51 mechanism to push the valve stem assembly 45 to move, the valve stem assembly 45 moves from the first position to the second position, and the medicine pool pressure control assembly 40 Switching from the first state to the second state, the ventilation pipe 43 and the first pipe 41 stop communicating, and the driving gas stops entering the medicine storage tank 30. At the same time, the ventilation pipe 43 and the second pipe 42 are connected, and the gas in the medicine storage tank 30 is discharged through the ventilation pipe 43 and the second pipe 42 to realize the pressure relief of the medicine storage tank 30.

Referring to Fig. 1, the dosing operation is completed. For example, the action of the user closing the lid can trigger the cam 51 mechanism to push the valve stem assembly 45 to move, the valve stem assembly 45 moves from the second position to the first position, and the first passage is connected with the vent pipe 43. The driving gas can enter the ventilation duct 43 via the first passage.

In some embodiments, as shown in FIGS. 3 and 4, the linkage mechanism 50 may also be a link mechanism. One end of the link mechanism is rotatably connected to the valve stem assembly 45, and the other end is rotatably connected to the cover 20.

Exemplarily, when the dosing operation is started, the action of opening the cover body 20 can trigger the linkage mechanism to push the valve stem assembly 45 to move. For example, when the cover body 20 rotates around a fixed fulcrum 56 to open, the linkage mechanism is driven. Move, the linkage mechanism pushes the valve stem assembly 45 to move, the valve stem assembly 45 can move from the first position to the second position, the medicine pool pressure control assembly 40 switches from the first state to the second state, the second passage and the vent pipe 43 is connected, and the high-pressure driving gas in the medicine storage tank 30 is discharged to realize pressure relief.

Exemplarily, the operation to end the dosing, such as the action of the user closing the lid triggers the linkage mechanism to push the valve stem assembly 45 to move, the valve stem assembly 45 moves from the second position to the first position, and the first channel communicates with the vent pipe 43 to drive The gas enters the ventilation duct 43 through the first passage.

In some embodiments, as shown in FIG. 5 and FIG. 6, the user starts the dosing operation of the anesthesia vaporizer 100 by pushing the dosing container 200 into the dosing port 31.

Referring to FIGS. 5 and 6, one end of the linkage mechanism 50 is connected to the medicine pool pressure control assembly 40, and the other end is located in the medicine filling port 31. After the user opens the lid 20, in the process of pushing the dosing container 200 into the dosing port 31, the end of the linkage mechanism 50 is matched with the dosing container 200 and moves with the dosing container 200, thereby driving the pressure control of the medicine pool Part of the structure of the component 40 moves, thereby preventing the driving gas from continuing to enter the medicine storage tank 30, and at the same time, the high-pressure driving gas in the medicine storage tank 30 is discharged to realize pressure relief.

Exemplarily, a sliding groove 311 may be provided on the side wall of the medicine adding port 31, and the medicine adding container 200 can extend into the medicine adding port 31 through the sliding groove 311. One end of the linkage mechanism 50 away from the valve stem assembly 45 passes through the sliding groove 311 and is located in the medicine adding port 31. When the medicated container 200 extends into the medicated port 31 from the sliding groove 311, the matching portion 210 of the medicated container 200 abuts against the end of the linkage mechanism 50. Specifically, the end of the linkage mechanism 50 abuts against the matching portion 210 on the medicated container 200. During the process of pushing the medicated container 200 along the medicated port 31, the linkage mechanism 50 can push the valve stem assembly 45 to move.

Exemplarily, the linkage mechanism 50 includes a connecting body 55 and a transmission body 54 that are rotatably connected. One end of the connecting body 55 away from the transmission body 54 is connected to the medicine pool pressure control assembly 40, and the end of the transmission body 54 is located in the medicine addition port 31. A fixed fulcrum 56 is provided in the middle of the transmission body 54. The end of the transmission body 54 abuts against the matching portion 210 of the dosing container 200. When the dosing container 200 is pushed along the dosing port 31, the transmission body 54 is pushed around and fixed. The fulcrum 56 rotates and drives the connecting body 55 to move, thereby pushing the valve stem assembly 45 to move.

Referring to FIG. 6, when the dosing operation is started, the action of pushing the dosing container 200 into the dosing port 31 triggers the linkage mechanism 50 to push the valve stem assembly 45 to move, and the valve stem assembly 45 moves from the first position to the second position , The medicine tank pressure control assembly 40 switches from the first state to the second state, the driving gas stops entering the medicine storage tank 30, and the driving gas in the medicine storage tank 30 is discharged through the vent pipe 43 and the first channel to achieve pressure relief.

Exemplarily, the user's operation to end the dosing of the anesthesia vaporizer 100 is to take out the dosing container 200 from the dosing port 31.

Referring to Fig. 5, the dosing operation is completed. For example, the action of the user taking out the dosing container 200 from the dosing port 31 triggers the linkage mechanism 50 to push the valve stem assembly 45 to move, and the valve stem assembly 45 moves from the second position to the first position. A passage communicates with the vent pipe 43, and the driving gas enters the vent pipe 43 through the first passage.

In the anesthesia vaporizer provided in the above-mentioned embodiments of the application, the linkage mechanism is driven by the user to start the dosing operation of the anesthesia vaporizer to drive the pool pressure control assembly to switch from the first state to the second state, wherein the first state can maintain the anesthesia vaporizer The pressure in the medicine storage tank is the working pressure. When switching to the second state, the first on-off valve is open, so that the pressure in the medicine storage tank can be discharged; thereby preventing the gas mixed with anesthetics from being released from the position of the cover, which affects the user Anesthesia operation.

Another embodiment of the present application also provides an anesthesia machine, which includes the aforementioned anesthesia vaporizer and a host.

Exemplarily, the anesthesia vaporizer may be fixedly connected to the host of the anesthesia machine, or detachably connected to the host of the anesthesia machine.

The specific principles and implementation methods of the anesthesia machine provided in the embodiments of the present application are similar to the anesthesia vaporizers in the foregoing embodiments, and will not be repeated here.

Another embodiment of the present application also provides a method for controlling an anesthesia vaporizer. Refer to FIG. 7 in conjunction with the above embodiments.

This control method is applied to the aforementioned anesthesia vaporizer. As shown in Fig. 7, the control method includes step S110 to step S120.

S110. Obtain the pressure in the ventilation pipe detected by the pressure sensor.

Specifically, a pressure sensor and a first on-off valve are arranged on the ventilation pipe of the anesthesia evaporator, and the first on-off valve is arranged between the pressure sensor and the medicine storage tank. Therefore, the pressure sensor can detect the pressure in the air duct.

Specifically, the medicine pool pressure control assembly of the anesthesia vaporizer is connected with the linkage mechanism, and the operation action on the anesthesia vaporizer during the dosing process can provide the driving force of the linkage mechanism, so that the medicine pool pressure control assembly is switched from the first state to the second state. Two states.

When the medicine tank pressure control component is in the second state, the medicine storage tank can be connected to the outside through the vent pipe, and the gas in the medicine storage tank can be discharged, so that the pressure in the medicine storage tank is reduced.

S120: If the pressure sensor detects that the pressure in the vent pipe has dropped to a first pressure threshold, close the first on-off valve to block the gas in the reservoir from venting through the vent pipe.

Specifically, when the pressure in the vent pipe drops to the first pressure threshold, the air pressure in the medicine storage tank is also relatively low, which can prevent the gas from being released from the position of the cover. When the pressure in the ventilation pipe drops to the first pressure threshold, the first switch valve is controlled to close, so that the gas in the storage tank stops being discharged to the exhaust gas treatment system through the ventilation pipe and the second pipe, reducing the consumption of anesthetics and preventing the increase in patient medical care cost.

In some embodiments, the control method further includes: if the pressure sensor detects that the pressure in the vent pipe rises to a second pressure threshold, opening the first on-off valve to enable the reservoir pressure control assembly Air is supplied to the medicine storage tank through the vent pipe to maintain the pressure in the medicine storage tank.

After the anesthetic is added, the user can perform the end operation of the dosing, such as closing the cover.

Exemplarily, the user's operation to end the dosing of the anesthesia vaporizer can drive the linkage mechanism to drive the pool pressure control assembly to switch from the third state to the fourth state.

When the medicine pool pressure control assembly is in the fourth state, the first pipe is connected to the vent pipe, so that the driving gas source can supply air to the vent pipe via the first pipe, and the first on-off valve is in the closed state at this time.

As the driving air source supplies air to the vent pipe, the pressure in the vent pipe rises. Exemplarily, if the pressure sensor detects that the pressure in the vent pipe has risen to the second pressure threshold, the tank pressure control component switches to the first state.

Specifically, switching the medicine pool pressure control component from the fourth state to the first state includes: opening the first on-off valve.

Exemplarily, when the first on-off valve is opened to make the vent pipe and the medicine storage tank communicate, since the pressure in the vent pipe rises to the second pressure threshold, it can prevent the air pressure in the medicine storage tank from being higher than the pressure in the vent pipe and causing mixing The gas with anesthetic enters the ventilation pipe and even the pressure control component of the medicine pool.

Specifically, the second pressure threshold is not less than the first pressure threshold. It can better prevent the air pressure in the medicine storage tank from being higher than the pressure in the vent pipe, so that the gas mixed with anesthetic agent enters the vent pipe and even the pressure control component of the medicine tank.

Exemplarily, the second pressure threshold may be equal to the working pressure.

Exemplarily, if the pressure sensor detects that the pressure of the vent pipe has risen to the second pressure threshold, the second on-off valve and the injector may also be opened. At this time, the air pressure in the medicine storage tank can make the anesthetic spray mist through the ejector. In this way, the anesthesia vaporizer automatically resumes work after the drug is added, without the user's additional operation, simplifies the operation process, is convenient to use, and improves the user experience.

The specific principle and implementation of the control method of the anesthesia vaporizer provided by the embodiment of the present application are similar to the anesthesia vaporizer of the foregoing embodiment, and will not be repeated here.

It should be understood that the terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit the application.

It should be noted that the descriptions of "first", "second", etc. used in the specification and appended claims of this application are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implied Indicate the number of technical features indicated. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features.

It should also be understood that the term "and/or" used in the specification and appended claims of this application refers to any combination of one or more of the items listed in the associated and all possible combinations, and includes these combinations.

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Anyone familiar with the technical field can easily think of various equivalents within the technical scope disclosed in this application. Modifications or replacements, these modifications or replacements shall be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims (24)

An anesthesia evaporator, comprising a shell, a medicine storage tank, a cover, and a medicine adding port connecting the medicine storage tank between the covers, and is characterized in that it further comprises: An injection pipe, one end is connected to the lower side of the medicine storage tank, and the other end is provided with an ejector; The medicine tank pressure control component is connected to the medicine storage tank, and the medicine tank pressure control component has a first state to maintain the pressure in the medicine storage tank at a working pressure, and a second state to discharge the pressure in the medicine storage tank ； A linkage mechanism, which is driven by the user to start the dosing operation of the anesthesia vaporizer to drive the pool pressure control assembly to switch from the first state to the second state; Wherein, the medicine pool pressure control assembly includes a vent pipe communicating with the medicine reservoir, a pressure sensor and a first switch valve are arranged on the vent pipe, and the first switch valve is arranged on the pressure sensor and the pressure sensor. Between the storage tanks; When the medicine pool pressure control assembly is in the first state, the first on-off valve is opened, and the medicine pool pressure control assembly supplies air to the medicine pool through the vent pipe to maintain the pressure in the medicine pool For work pressure; When the medicine tank pressure control assembly is switched from the first state to the second state, the first on-off valve is opened, and the medicine storage tank discharges pressure through the vent pipe. The anesthesia evaporator according to claim 1, wherein if the pressure sensor detects that the pressure in the ventilation pipe drops to a first pressure threshold or the time for switching from the first state to the second state exceeds a preset Threshold value, the first switch valve is closed to shut off the vent pipe, and the medicine pool pressure control component is in the third state. The anesthesia vaporizer according to claim 2, wherein the user's operation to complete the dosing of the anesthesia vaporizer drives the linkage mechanism to drive the medicine pool pressure control assembly to switch from the third state to the fourth state. status. The anesthesia vaporizer according to claim 3, wherein when the medicine pool pressure control assembly is in the fourth state, the first on-off valve is closed, and the medicine pool pressure control assembly is connected to the ventilation pipe Gas supply. The anesthesia vaporizer according to claim 4, wherein if the pressure sensor detects that the pressure in the ventilation pipe rises to a second pressure threshold, the medicine pool pressure control component switches to the first status. The anesthesia vaporizer according to any one of claims 2 to 5, wherein a second on-off valve is provided between the medicine storage tank and the ejector, if the pressure sensor detects the When the pressure of the ventilation pipe drops to the first pressure threshold, the second on-off valve and/or the ejector are closed. 7. The anesthesia vaporizer according to claim 6, wherein if the pressure sensor detects that the pressure of the ventilation pipe rises to a second pressure threshold, the second on-off valve and the ejector are opened. The anesthesia vaporizer according to claim 6, wherein the anesthesia vaporizer further comprises a control circuit connected to the pressure sensor, the first on-off valve, the second on-off valve, and The injector; the pressure sensor transmits the detected pressure to the control circuit, and the control circuit controls the second on-off valve, the first on-off valve, and the injector to close or open. The anesthesia vaporizer according to claim 5, wherein the second pressure threshold is not less than the first pressure threshold. The anesthesia vaporizer according to any one of claims 3 to 5, wherein the medicine pool pressure control assembly further comprises a valve body, a first pipe, a second pipe, and a valve stem assembly; the first pipe One end is connected to the first port of the valve body, and the other end is connected to the driving gas source; one end of the second pipe is connected to the second port of the valve body, and the other end is connected to the exhaust gas treatment system; the valve body The third port of is connected to the vent pipe; the valve stem assembly is driven by the linkage mechanism to connect the first pipe or the second pipe with the vent pipe. The anesthesia vaporizer according to claim 10, wherein the user's operation to start dosing the anesthesia vaporizer is to open the cover, and the opening of the cover drives the linkage mechanism to drive the drug The cell pressure control component is switched from the first state to the second state. The anesthesia vaporizer according to claim 11, wherein the user's operation to end the dosing of the anesthesia vaporizer is to close the cover, and the cover is closed to drive the linkage mechanism to drive the The medicine pool pressure control component is switched from the third state to the fourth state. The anesthesia vaporizer according to claim 12, wherein the linkage mechanism is a cam mechanism, one end of the cam mechanism is slidably connected to the valve stem assembly, and the other end is fixedly connected to the cover. The anesthesia vaporizer according to claim 12, wherein the linkage mechanism is a linkage mechanism, one end of the linkage mechanism is rotatably connected to the valve stem assembly, and the other end is rotatably connected to the cover. The anesthesia vaporizer according to claim 10, wherein the user's starting operation of dosing the anesthesia vaporizer is to push the dosing container into the dosing port. The anesthesia vaporizer according to claim 15, wherein one end of the linkage mechanism is connected to the medicine pool pressure control assembly, and the other end is located in the medicine adding port. The anesthesia vaporizer according to claim 16, wherein the end operation of the user's dosing of the anesthesia vaporizer is to take out the dosing container from the dosing port. The anesthesia evaporator according to claim 16, characterized in that the side wall of the dosing port is provided with a chute, and when the dosing container extends into the dosing port from the chute, the dosing port The matching part of the medicine container abuts against the end of the linkage mechanism. The anesthesia vaporizer according to claim 16, wherein the linkage mechanism comprises a connecting body and a transmission body that are rotatably connected, and an end of the connecting body away from the transmission body is connected to the medicine pool pressure control assembly, The end of the transmission body is located in the medicine adding port. The anesthesia vaporizer according to any one of claims 1 to 9, wherein the anesthesia vaporizer further comprises: A level gauge for detecting the liquid level in the reservoir; and/or A closed valve contained in the dosing port. An anesthesia machine, characterized by comprising the anesthesia vaporizer according to any one of claims 1 to 20. A method for controlling an anesthesia vaporizer according to claim 1, wherein the method comprises: Acquiring the pressure in the vent pipe detected by the pressure sensor; If the pressure in the vent pipe drops to a first pressure threshold, the first switch valve is closed to block the gas in the medicine storage tank from venting through the vent pipe. The method according to claim 22, wherein the method further comprises: If the pressure in the vent pipe rises to a second pressure threshold, the first on-off valve is opened to allow the medicine pool pressure control assembly to supply air to the medicine reservoir through the vent pipe. The method according to claim 23, wherein the second pressure threshold is not less than the first pressure threshold.

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