Drug supply anesthesia device for clinical anesthesiology department

Abstract

The invention discloses a clinical anesthesiology department medicine supply anesthesia device which comprises an air blower, an outlet of the air blower is connected with an inspiration check valve in a penetrating mode, one end of the inspiration check valve is connected with an expiration check valve in a penetrating mode, and an anesthetic gas output end is connected between the inspiration check valve and the expiration check valve in a penetrating mode. One end of the expiration check valve is connected with a soda lime tank in a penetrating mode, one end of the soda lime tank is connected with an inlet of an air blower in a penetrating mode, an outlet of the air blower is further connected with a first throttling valve in a penetrating mode, a mixing device is arranged at one end of the first throttling valve, and one end of the mixing device is connected with a fresh gas supply end in a penetrating mode. The fresh gas supply end is in through connection with a second throttling valve, the mixing device is in through connection with the soda lime tank, one end of the suction check valve is in through connection with a suction flow sensor, and the device solves the problem of poor practicability at present.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of inhalation anesthesia, and particularly relates to a drug supply anesthesia device for a clinical anesthesiology department. BACKGROUND

[0002] The clinical goal of an inhalation anesthesia system is to make the end-expiratory concentration of a volatile anesthetic reach and maintain a target range as soon as possible and stably under the premise of ensuring the safety of patient oxygenation and ventilation, and to reduce the consumption of the anesthetic and the exhaust emission. For this purpose, clinical practice has long been balancing between the two targets of fast time process and small overshoot, and low fresh gas flow and low anesthetic consumption.

[0003] The devices widely used at present mostly adopt a breathing circuit structure, the ventilation side is driven by a piston type or a blower type, a carbon dioxide absorption device is arranged in the circuit to realize semi-closed or low-flow operation, and the gas redistribution in the expiratory phase is mainly completed by gas bag back-filling and pipeline volume exchange. Under the condition of low fresh gas flow, the lack of effective circuit circulation flow in the expiratory phase will lead to the breath-to-breath swing of the inhalation port and the end-expiratory port concentrations, and the inhomogeneity of the anesthetic gas concentration. This phenomenon has become a problem to be solved by the personnel in the field. SUMMARY

[0004] The present application aims at the existing timber collection device, a drug supply anesthesia device for a clinical anesthesiology department, to solve the problems in the background.

[0005] In order to solve the above technical problems, the present application provides the following technical scheme: a drug supply anesthesia device for a clinical anesthesiology department, comprising a blower, the outlet of the blower is through-connected with an inhalation check valve, one end of the inhalation check valve is through-connected with an exhalation check valve, the inhalation check valve and the exhalation check valve are through-connected with an anesthetic gas output end, one end of the exhalation check valve is through-connected with a soda lime tank, one end of the soda lime tank is through-connected with the inlet of the blower, the outlet of the blower is further through-connected with a throttle valve one, one end of the throttle valve one is provided with a mixing device, one end of the mixing device is through-connected with a fresh gas supply end, the fresh gas supply end is through-connected with a throttle valve two, and the mixing device and the soda lime tank are through-connected.

[0006] The present application further discloses that one end of the inhalation check valve is through-connected with an inhalation flow sensor, one end of the inhalation flow sensor is through-connected with an exhalation flow sensor, the outlet of the blower is further through-connected with a gas pressure sensor, the exhalation check valve and the soda lime tank are through-connected with a proportional valve, one end of the proportional valve is through-connected with a channel switch, and one end of the channel switch is through-connected with a gas recovery end.

[0007] The present invention further illustrates that the gas recovery end is connected to a condenser, the condenser is connected to a temporary storage chamber, one end of the temporary storage chamber is connected to a circulation pump, one end of the circulation pump is connected to a fresh gas supply end, the fresh gas supply end is also connected to an anesthetic gas check valve, one end of the anesthetic gas check valve is connected to an evaporation chamber, one end of the evaporation chamber is connected to a pulse metering chamber, one end of the pulse metering chamber is connected to an on / off valve, and one end of the on / off valve is provided with an anesthetic liquid tank.

[0008] The present invention further describes that the mixing device includes a cylindrical shell, a partition is fixedly installed on the inner wall of the cylindrical shell, a circulation inlet and a fresh inlet are respectively connected to one end of the cylindrical shell, the circulation inlet and the fresh inlet are respectively located on both sides of the partition, a central shaft is fixedly installed in the middle of the partition, a left valve plate and a right valve plate are rotatably arranged on the outer wall of the central shaft, a fan-shaped notch is provided between the left valve plate and the right valve plate, and the fan-shaped notch is aligned with the circulation inlet and the fresh inlet, and the other end of the cylindrical shell is connected to a soda lime container.

[0009] The present invention further illustrates that a fixed plate is fixedly installed on the inner wall of the cylindrical shell, a folded bladder is connected to one side of the fixed plate, a movable plate is connected to one side of the folded bladder, and the two movable plates are respectively connected to the left valve plate and the right valve plate. A control end is installed on the outer wall of the cylindrical shell, and the control end is connected to the folded bladder. A diaphragm differential pressure controller one is connected to the control end located on the right valve plate, and one end of the diaphragm differential pressure controller one is connected to the anesthetic gas output end. A diaphragm differential pressure controller two is connected to the control end located on the left valve plate, and one end of the diaphragm differential pressure controller two is connected to the evaporation chamber.

[0010] The present invention further illustrates that a selective permeation membrane is fixedly connected to the inner wall of the second diaphragm differential pressure controller, and a piston is slidably installed on the inner wall of the second diaphragm differential pressure controller, with a return spring connected to one side of the piston.

[0011] The present invention further explains that a circular groove is correspondingly provided inside the central shaft, and an adjusting plate is threadedly connected to the inner wall of the circular groove. A spiral rod is connected to one side of the adjusting plate, and the circular groove is in communication with the folding bag.

[0012] The present invention further illustrates that one end of the soda lime jar is connected to a pressure limiting valve, and one end of the pressure limiting valve is connected to an overflow port.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention uses a blower to form a closed bypass. When the patient inhales, the blower operates at a high speed and when the patient exhales, the blower operates at a low speed. This bypass remains unobstructed during the exhalation period. Therefore, the continuous operation of the blower will generate a superimposed circulating flow that circles in the circuit. Since there is also a stable gas circulation flow during the exhalation period, the partial pressure of the anesthetic in each segment of the circuit is rapidly homogenized during the interbreathing period. When the next inhalation begins, the inspiratory end is already a uniformly mixed gas. Therefore, the concentration difference at the respiratory inlet is reduced, and the interbreathing oscillation disappears or is significantly weakened. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram illustrating the overall principle of the present invention; Figure 2 This is a schematic diagram of the mixing device structure of the present invention. Figure One ; Figure 3 This is a schematic diagram of the mixing device structure of the present invention. Figure Two ; Figure 4 This is a schematic diagram of the central axis structure of the present invention; Figure 5 This is a schematic diagram illustrating the fresh gas treatment principle of the present invention; In the diagram: 1. Blower; 2. Inspiratory check valve; 3. Inspiratory flow sensor; 4. Expiratory flow sensor; 5. Expiratory check valve; 6. Proportional valve; 7. Gas recovery end; 8. Channel switch; 9. Mixing device; 10. Pressure limiting valve; 11. Gas pressure sensor; 12. Soda lime container; 13. Diaphragm differential pressure controller one; 14. Throttling valve one; 15. Throttling valve two; 16. Fresh gas supply end; 17. Overflow port; 18. Diaphragm differential pressure controller two; 181. Selective osmosis membrane; 182. Active... 183. Plug; 19. Return spring; 20. Anesthetic liquid tank; 21. On / off valve; 22. Pulse metering chamber; 23. Heating tube; 24. Evaporation chamber; 25. Anesthetic gas check valve; 26. Temporary storage chamber; 251. Circulation pump; 91. Circulation inlet; 92. Fresh inlet; 93. Central shaft; 931. Circular groove; 932. Spiral rod; 933. Adjusting plate; 94. Partition plate; 95. Left valve plate; 96. Right valve plate; 97. Fixed plate; 971. Folding bladder; 972. Movable plate; 98. Control end. Detailed Implementation

[0015] The following detailed, non-limiting description of the technical solution of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] Please see Figures 1-5 This invention provides a technical solution: a drug supply anesthesia device for clinical anesthesia departments, comprising a blower 1, an inhalation check valve 2 connected to the outlet of the blower 1, an expiratory check valve 5 connected to one end of the inhalation check valve 2, an anesthetic gas output terminal connected between the inhalation check valve 2 and the expiratory check valve 5, a soda-lime container 12 connected to one end of the expiratory check valve 5, and an inlet of the blower 1 connected to one end of the soda-lime container 12. A throttling valve 14 is also connected to the outlet of the blower 1, a mixing device 9 is provided at one end of the throttling valve 14, a fresh gas supply terminal 16 connected to one end of the mixing device 9, a second throttling valve 15 connected to the fresh gas supply terminal 16, and the mixing device 9 connected to the soda-lime container 12. The blower 1 provides the driving flow, which flows through the inhalation check valve 2 and into the anesthetic gas output terminal to be delivered to the patient; the expiratory check valve 1... Check valve 5 prevents backflow of gas from the patient side; simultaneously, fresh gas supply end 16 injects fresh gas into mixing device 9 through throttle valve 2 15. Mixing device 9 mixes with the loop gas from throttle valve 14 before entering soda lime tank 12, and then CO2 is removed by soda lime tank 12 before returning to blower 1. Gas supply continues in the next cycle; blower 1 branches off a circulation branch at the outlet, which sends the loop gas into mixing device 9 through throttle valve 14, and then merges with the main loop at soda lime tank 12 to form a bypass circulation flow that continues during the exhalation period for forced mixing within the loop; fresh gas is metered by throttle valve 2 15 and enters mixing device 9 from fresh gas supply end 16, where it is premixed with the loop gas from throttle valve 14, and then enters soda lime tank 12 along with the fluid and returns to blower 1 inlet. In this way, the fresh air will not directly impact the patient's side, but will first be sheared and mixed by the circuit gas, significantly reducing the concentration fluctuation and stratification between the inhalation port and the end exhalation port. An inspiratory check valve 2 is connected to an inspiratory flow sensor 3 at one end, and an expiratory flow sensor 4 is connected to the other end of the inspiratory flow sensor 3. A pressure sensor 11 is also connected to the outlet of the blower 1. A proportional valve 6 is connected between the expiratory check valve 5 and the soda lime container 12. A channel switch 8 is connected to one end of the proportional valve 6, and a gas recovery terminal 7 is connected to the other end of the channel switch 8. The patient's exhaled air enters the distribution node through the expiratory check valve 5, and is proportionally divided between two pathways by the proportional valve 6 according to its real-time opening: one pathway leads to the gas recovery terminal 7, and the other continues into the soda lime container. The ash container 12 participates in the circulation, and the pressure sensor 11 measures the loop pressure and compares it with the set target pressure band: when the loop pressure is higher than the upper limit, the proportional valve 6 increases the opening towards the gas recovery end 7 and relatively closes it towards the soda lime container 12, increasing the recovery ratio and quickly releasing excess volume. When the loop pressure is lower than the lower limit, the proportional valve 6 increases the opening towards the soda lime container 12 and closes it towards the gas recovery end 7, increasing the circulation ratio and sending more exhaled air into the absorption and reuse pathway; this stabilizes the loop pressure without cutting off the circulation pathway, ensuring continuous circulation flow during the exhalation period and maintaining mixing efficiency. Compared to a simple on / off overflow, the proportional valve 6 is continuously adjustable, and together with the pressure sensor 11, it forms a pressure band control with hysteresis, significantly reducing the back-and-forth oscillation of over-expansion and re-inflation, resulting in a smoother concentration between the end exhalation and inhalation.

[0017] Channel switch 8 provides operating condition selection and bias: Closed-loop bias: Channel switch 8 biases the middle position of proportional valve 6 toward the soda lime tank 12, maintaining a higher circulation ratio, and only releases to the gas recovery end 7 when the pressure surges; Evaporation bias: Channel switch 8 biases the middle position of proportional valve 6 toward the gas recovery end 7, maintaining a higher recovery ratio and accelerating the removal of residual anesthetic gas from the circuit.

[0018] A condenser is connected to the gas recovery end 7, and a temporary storage chamber 25 is connected to the condenser. A circulation pump 251 is connected to one end of the temporary storage chamber 25, and one end of the circulation pump 251 is connected to the fresh gas supply end 16. An anesthetic gas check valve 24 is also connected to the fresh gas supply end 16. An anesthetic gas check valve 24 is connected to an evaporation chamber 23, and one end of the evaporation chamber 23 is connected to a pulse metering chamber 21. An on / off valve 20 is connected to one end of the pulse metering chamber 21, and an anesthetic liquid tank 19 is installed at one end of the on / off valve 20. The exhaled waste gas diverted to the gas recovery end 7 first enters the condenser for condensation, dehumidification, and condensate retention, and then enters the temporary storage chamber 25 for buffering and pressure stabilization. The circulation pump 251 pumps the pretreated recovered gas at a set flow rate. The fresh gas supply end 16 is pushed back and, together with the external fresh gas, enters the mixing device 9 as a mixing source. It is then reused through the main circuit via the soda lime tank 12, reducing the amount of external fresh gas used and the loss of anesthetic with the waste gas. The opening and closing valve 20 feeds a quantitative amount of anesthetic liquid into the pulse metering chamber 21 in a pulse manner. The quantitative liquid is sent into the evaporation chamber 23 and heated and vaporized into steam. After passing through the anesthetic gas check valve 24 to prevent backflow, it is incorporated into the fresh gas supply end 16 and premixed in the mixing device 9 together with the returned gas and the external fresh gas. It is then returned to the main circuit. The pulse metering chamber 21 makes a single dose into a standard amount. The evaporation chamber 23 quickly vaporizes it and stably incorporates it into the fresh gas supply end 16 through the anesthetic gas check valve 24. This helps to achieve rapid target achievement and low overshoot time process even with low fresh gas volume. The mixing device 9 includes a cylindrical shell. A partition 94 is fixedly installed on the inner wall of the cylindrical shell. A circulation inlet 91 and a fresh inlet 92 are respectively connected to one end of the cylindrical shell. The circulation inlet 91 and the fresh inlet 92 are located on both sides of the partition 94. A central shaft 93 is fixedly installed in the middle of the partition 94. A left valve plate 95 and a right valve plate 96 are rotatably arranged on the outer wall of the central shaft 93. A fan-shaped notch is formed between the left valve plate 95 and the right valve plate 96, and the fan-shaped notch is connected to the circulation inlet 91 and the fresh inlet 92. The inlet ends 92 are aligned with each other, and the other end of the cylindrical shell is connected to the soda lime tank 12. The arc length and opening angle of the two fan-shaped notches are aligned with the circulation inlet end 91 and the fresh inlet end 92 respectively and are superimposed to form a variable effective flow area. As the valve plate rotates, the exposure area ratio of the two notches changes synchronously and in opposite directions. The two airflows from the fresh inlet end 92 and the circulation inlet end 91 are first turbulently mixed in the mixing chamber, and then enter the soda lime tank 12 from the outlet of the mixing device. Relying on the linkage of the area ratio of the two fan-shaped notches of the left valve plate 95 and the right valve plate 96, the continuous and repeatable mechanical ratio control of the fresh gas injection amount and the circulation gas injection amount is directly realized in the mixing device 9, avoiding the oscillation caused by the on / off splitting. A fixed plate 97 is fixedly installed on the inner wall of the cylindrical shell. A folded bladder 971 is connected to one side of the fixed plate 97, and a movable plate 972 is connected to one side of the folded bladder 971. The two movable plates 972 are respectively connected to the left valve plate 95 and the right valve plate 96. A control end 98 is installed on the outer wall of the cylindrical shell. The control end 98 is connected to the folded bladder 971. A diaphragm differential pressure controller 13 is connected to the control end 98 on the right valve plate 96. One end of the diaphragm differential pressure controller 13 is connected to the anesthetic gas output end. A diaphragm differential pressure controller 28 is connected to the control end 98 on the left valve plate 95. One end of the diaphragm differential pressure controller 28 is connected to the vaporization chamber 23. The diaphragm differential pressure controller 13 compares the circuit reference pressure with the built-in reference spring to generate two complementary control chamber pressures, one being the fresh side chamber pressure and the other being the circulating side chamber pressure. A selective permeation membrane 181 is fixedly connected to the inner wall of the diaphragm-type differential pressure controller 18. A piston 182 is slidably mounted on the inner wall of the diaphragm-type differential pressure controller 18. A return spring 183 is connected to one side of the piston 182. The selective permeation membrane 181 only allows anesthetic molecules to permeate, almost blocking carrier gases such as oxygen / nitrogen. The outer side of the membrane is adjacent to the sample gas in the circuit, and the inner side of the membrane is connected to the internal control cavity of the diaphragm-type differential pressure controller 18. Thus, the pressure formed in the internal control cavity is approximately equal to the partial pressure of the anesthetic in the circuit. The piston 182 slides and seals on the inner wall of the diaphragm-type differential pressure controller 18. One side of the piston is pushed by the pressure in the internal control cavity, and the other side is provided with a reference reaction force by the return spring 183. When the pressure increases, the piston 182 moves towards the spring; when the pressure decreases, the return spring 183 pushes the piston 182 back. This converts the change in the partial pressure of the anesthetic into a usable mechanical displacement force. When the concentration of anesthetic gas at the anesthetic gas output end increases, it causes the pressure of the diaphragm differential pressure controller 13 to increase, which in turn transmits the pressure to the control end 98 located on the right valve plate 96 side. This causes the corresponding pleated bladder 971 to unfold, driving the movable plate 972 to move. At this time, the opening between the valve plates corresponding to the fresh inlet end 92 decreases, and less fresh gas with saturated anesthetic gas is supplied. Meanwhile, the opening between the valve plates corresponding to the circulation inlet end 91 increases, and more circulating gas is supplied. Thus, as the concentration of anesthetic gas at the anesthetic gas output end increases, the input amount of anesthetic gradually decreases. The diaphragm differential pressure controller 18 connected to the vapor chamber 23 measures the initially set end-expiration concentration. When the initially set end-expiration concentration is higher, the pleated bladder 971 corresponding to the left valve plate 95 will unfold to a greater extent, resulting in a larger initial fresh gas ratio and reaching the end-expiration concentration more quickly. Only when the anesthetic gas at the anesthetic gas output end reaches a higher concentration can its valve open to the corresponding degree, thereby adjusting the initial gas supply ratio according to the initially set end-expiration concentration.

[0019] A circular groove 931 is correspondingly formed inside the central shaft 93. An adjusting plate 933 is movably connected to the inner wall of the circular groove 931 via threads. A screw rod 932 is connected to one side of the adjusting plate 933. The circular groove 931 is connected to the folding bladder 971 and serves as the pre-inflation chamber of the folding bladder 971, communicating with the air passage of the folding bladder 971. Together, they form an equivalent air chamber. The initial volume and initial pressure of this equivalent air chamber determine the initial deployment degree of the folding bladder 971 at zero input. The adjusting plate 933 moves axially forward and backward on the threads of the inner wall of the circular groove 931. When the screw rod 932 moves it forward, the effective volume of the circular groove 931 decreases; when it moves backward, the effective volume increases. Under near-adiabatic or isothermal gas conditions, changes in the equivalent volume will cause changes in the equivalent pre-pressure, thereby changing the initial inflation volume and pre-tightening force of the folding bladder 971, and fine-tuning the initial gas ratio. One end of the soda lime hopper 12 is connected to a pressure limiting valve 10, and one end of the pressure limiting valve 10 is connected to an overflow port 17. When the circuit pressure exceeds the safety threshold for a short time, the pressure limiting valve 10 opens instantaneously, directly guiding the overpressure volume to the gas recovery end 7, without relying on proportional regulation, ensuring safety under extreme working conditions.

[0020] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features, and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A drug delivery anesthesia device for clinical anesthesiology, characterized in that: The device includes a blower (1), an inhalation check valve (2) connected to the outlet of the blower (1), an exhalation check valve (5) connected to one end of the inhalation check valve (2), an anesthetic gas output terminal connected between the inhalation check valve (2) and the exhalation check valve (5), a soda lime container (12) connected to one end of the exhalation check valve (5), a soda lime container (12) connected to one end of the soda lime container (12), an inlet of the blower (1), a throttle valve (14) connected to the outlet of the blower (1), a mixing device (9) provided at one end of the throttle valve (14), a fresh gas supply terminal (16) connected to one end of the mixing device (9), a throttle valve (15) connected to the fresh gas supply terminal (16), and a mixing device (9) connected to the soda lime container (12).

2. The anesthesia delivery device for clinical anesthesia departments according to claim 1, characterized in that: One end of the inhalation check valve (2) is connected to an inhalation flow sensor (3), and one end of the inhalation flow sensor (3) is connected to an exhalation flow sensor (4). The outlet of the blower (1) is also connected to a pressure sensor (11). A proportional valve (6) is connected between the exhalation check valve (5) and the soda lime container (12). One end of the proportional valve (6) is connected to a channel switch (8), and one end of the channel switch (8) is connected to a gas recovery end (7).

3. The anesthesia delivery device for clinical anesthesia departments according to claim 2, characterized in that: The gas recovery end (7) is connected to a condenser, the condenser is connected to a temporary storage chamber (25), one end of the temporary storage chamber (25) is connected to a circulation pump (251), one end of the circulation pump (251) is connected to a fresh gas supply end (16), the fresh gas supply end (16) is also connected to an anesthetic gas check valve (24), one end of the anesthetic gas check valve (24) is connected to an evaporation chamber (23), one end of the evaporation chamber (23) is connected to a pulse metering chamber (21), one end of the pulse metering chamber (21) is connected to an on / off valve (20), and one end of the on / off valve (20) is provided with an anesthetic liquid tank (19).

4. The drug delivery anesthesia device for clinical anesthesiology as described in claim 3, characterized in that: The mixing device (9) includes a cylindrical shell, on the inner wall of which a partition (94) is fixedly installed. One end of the cylindrical shell is connected to a circulation inlet (91) and a fresh inlet (92). The circulation inlet (91) and the fresh inlet (92) are located on both sides of the partition (94). A central shaft (93) is fixedly installed in the middle of the partition (94). A left valve plate (95) and a right valve plate (96) are rotatably arranged on the outer wall of the central shaft (93). There is a fan-shaped notch between the left valve plate (95) and the right valve plate (96), and the fan-shaped notch is aligned with the circulation inlet (91) and the fresh inlet (92). The other end of the cylindrical shell is connected to a soda lime jar (12).

5. The drug delivery anesthesia device for clinical anesthesiology as described in claim 4, characterized in that: A fixed plate (97) is fixedly installed on the inner wall of the cylindrical shell. A folded bladder (971) is connected to one side of the fixed plate (97), and a movable plate (972) is connected to one side of the folded bladder (971). The two movable plates (972) are respectively connected to the left valve plate (95) and the right valve plate (96). A control end (98) is installed on the outer wall of the cylindrical shell. The control end (98) is connected to the folded bladder (971). A diaphragm differential pressure controller one (13) is connected to the control end (98) on the right valve plate (96). One end of the diaphragm differential pressure controller one (13) is connected to the anesthetic gas output end. A diaphragm differential pressure controller two (18) is connected to the control end (98) on the left valve plate (95). One end of the diaphragm differential pressure controller two (18) is connected to the evaporation chamber (23).

6. The drug delivery anesthesia device for clinical anesthesiology as described in claim 5, characterized in that: The inner wall of the second diaphragm differential pressure controller (18) is fixedly connected to a selective permeation membrane (181), and a piston (182) is slidably installed on the inner wall of the second diaphragm differential pressure controller (18). A return spring (183) is connected to one side of the piston (182).

7. A drug delivery anesthesia device for clinical anesthesiology as described in claim 6, characterized in that: The central shaft (93) has a corresponding circular groove (931) inside. An adjusting plate (933) is threadedly connected to the inner wall of the circular groove (931). A spiral rod (932) is connected to one side of the adjusting plate (933). The circular groove (931) is connected to the folding bag (971).

8. The drug delivery anesthesia device for clinical anesthesiology as described in claim 7, characterized in that: One end of the soda lime jar (12) is connected to a pressure limiting valve (10), and one end of the pressure limiting valve (10) is connected to an overflow port (17).

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