WO2016086354A1

WO2016086354A1 - Anesthesia machine respiratory system and anesthesia machine

Info

Publication number: WO2016086354A1
Application number: PCT/CN2014/092785
Authority: WO
Inventors: 陈培涛; 罗才瑾; 蔡琨
Original assignee: 深圳迈瑞生物医疗电子股份有限公司
Priority date: 2014-12-02
Filing date: 2014-12-02
Publication date: 2016-06-09
Also published as: CN105517612A; CN105517612B

Abstract

An anesthesia machine respiratory system and an anesthesia machine. The anesthesia machine respiratory system comprises a driving branch and an exhaust pipeline (31), and further comprises a switching device (14) used for introducing gas exhaled by a patient into the driving branch or the exhaust pipeline (31) selectively to realize switching between rebreathing and non-rebreathing. The switching device (14) is connected to the driving branch and the exhaust pipeline (31), and the driving branch is connected to an absorption device (8). The anesthesia machine comprises the anesthesia machine respiratory system. The anesthesia machine respiratory system and the anesthesia machine can realize rapid switching between a non-rebreathing system and a rebreathing system. In the non-rebreathing system mode, it is unnecessary for medical workers to pay close attention to a carbon dioxide absorbent in the absorption device (8) to see whether it needs to be replaced, so that the burden of the medical workers is alleviated and use is convenient.

Description

Anesthesia machine breathing system and anesthesia machine

Technical field

The invention belongs to the technical field of medical equipment, and in particular relates to a multifunctional anesthesia machine breathing system and an anesthesia machine.

Background technique

The prior art anesthesia breathing system can only work in the re-inhalation system during mechanical ventilation, and the gas exhaled by the patient in the re-inhalation system can be reused, and the bellows device is usually used to isolate the driving gas from the patient's exhaled gas, and the patient exhaled. The gas is repeatedly inhaled, so it is necessary to use a carbon dioxide absorber to absorb the carbon dioxide in the exhaled gas of the patient. Carbon dioxide absorbent has a long service life. During long-term surgery, medical personnel are required to pay attention to whether the carbon dioxide absorbent needs to be replaced to prevent repeated inhalation of carbon dioxide. In the re-inhalation system, even when intravenous anesthesia is performed, it is still necessary for the medical staff to pay attention to whether the carbon dioxide absorbent needs to be replaced at this time, and the carbon dioxide absorbent absorbs carbon dioxide and generates a large amount of water vapor, which easily causes condensation and water in the circuit. It affects the observation of the inhalation valve by medical staff and is inconvenient to use.

technical problem

SUMMARY OF THE INVENTION The object of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide an anesthesia machine breathing system and an anesthesia machine which are convenient to use.

Technical solution

The technical solution of the present invention is: an anesthesia machine breathing system, including a driving branch , an exhaust line, an expiratory line, and an inspiratory line; further comprising connecting the drive branch to the expiratory line and the inspiratory line, or connecting the drive branch to the inspiratory line, and exhaling Switching device for connecting a pipeline to an exhaust line to achieve switching between re- or no re-suction .

Optionally, the driving branch further comprises driving means for controlling the suction pressure and the flow, the driving device being respectively connected to the switching device and the gas conveying device through two sets of pipelines; or The driving device is connected to the exhalation line or the inspiratory line; or the driving device is connected to the switching device.

Optionally, the driving branch includes a gas conveying device; the suction pipe or the gas conveying device is connected with a fresh gas supply line, and the exhalation line and the exhaust line are connected to the switching a device, the gas delivery device is connected to the switching device and the inspiratory line, and the inhalation line or the exhalation line or the gas supply device is connected to the inspiratory line There are absorption devices.

Optionally, the absorption device is connected to the suction line, the absorption device is connected in parallel with a bypass branch, and the multifunctional anesthesia breathing system has a bypass switching valve, and the bypass switching valve will absorb The device is in communication with the suction line or communicates the bypass branch with the suction line.

Optionally, a connecting line is connected between the air conveying device and the switching device, the connecting line is connected to the switching device through a first branch pipe, and the connecting pipe is connected to the device through a second branch pipe A suction line is connected to the connection line, and a manual machine-controlled switching valve is connected, and the manual machine-controlled switching valve is connected with a manual control component.

Optionally, the manual control component includes an exhaust gas discharge pipe connected to the manual machine control switching valve, and the exhaust gas discharge pipe is connected with a manual skin capsule and an adjustable pressure limiting valve.

Optionally, the driving branch further comprises an intake line, the switching device can connect the driving device with the expiratory line and the inspiratory line, or the switching device connects the intake line and the inspiratory line And connect the exhalation line to the exhaust line.

Optionally, the switching device is a two-position four-way reversing valve or a two-position three-way reversing valve.

Optionally, the switching device has a first inlet, a second inlet, a first outlet, and a second outlet, and the switching device includes means for the first inlet and the first outlet, the second inlet and the second a second outlet conducting and a switching mechanism for switching to the first inlet and the second outlet, the second inlet and the first outlet, wherein the driving device is connected to the first inlet through a first branch, The driving device is connected to the gas conveying device through a second branch, the second inlet is connected to the exhalation line, the first outlet is connected to the exhaust line, and the second outlet is connected to the air outlet a gas device and the suction line.

Optionally, the exhaust line is connected to an exhalation valve.

Optionally, the gas delivery device is a folded capsule gas delivery device, a tortuous airway gas delivery device or a piston gas transmission device.

Optionally, the folding capsule air delivery device comprises a housing and a folding capsule disposed in the housing, a space between an outer side of the folding capsule and an inner side of the housing is in communication with the driving device, a space inside the folding bladder is connected to the switching device and the suction line; the tortuous airway delivery device comprises a single, two or more zigzag air passages connected in parallel; the tortuous air passage is connected to The switching device and the suction line; the piston type gas transmission device includes a housing and a piston slidably disposed in the housing, and a housing of the piston type gas transmission device is coupled to the switching device and The suction line.

Optionally, the drive means is controlled by a flow rate or pressure through a proportional valve or turbine.

Optionally, an adsorption material for adsorbing carbon dioxide is disposed in the absorption device.

The present invention also provides an anesthesia machine having the anesthesia machine breathing system described above.

Beneficial effect

The anesthesia machine breathing system and anesthesia machine provided by the present invention are capable of rapid switching between a no-re-inhalation system mode and a re-inhalation system mode. In the no-inhalation system mode, it can be used for intravenous anesthesia and as a ventilator. The driving gas is directly inhaled by the patient. The patient exhaled gas is discharged to the outside through the exhalation valve, and is not recycled in the respiratory system. The medical staff need not pay attention to it. Whether the carbon dioxide absorbent needs to be replaced, the burden on the medical staff is reduced, and the use is convenient. Moreover, the multi-functional anesthesia machine respiratory system provided by the embodiment of the present invention is not limited by the type of the gas delivery device, and may be a folding capsule, a piston or a tortuous airway type gas delivery device; and is not limited by the driving mode. The driving device may be a proportional valve driven type or a turbo driven type or the like.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

1 is a schematic view showing the connection of an anesthesia machine breathing system in a re-inhalation system mode according to an embodiment of the present invention;

2 is a schematic diagram of a connection of an anesthesia machine breathing system in a non-re-inhalation system mode according to an embodiment of the present invention;

3 is a schematic diagram of a connection of an anesthesia machine breathing system in a re-inhalation system mode according to an embodiment of the present invention;

4 is a schematic diagram of a connection of an anesthesia machine breathing system in a non-re-inhalation system mode according to an embodiment of the present invention;

5 is a schematic plan view showing another embodiment of a switching device in an anesthesia machine respiratory system according to an embodiment of the present invention;

6 is a schematic diagram showing the connection of a three-way valve as a switching device and in a re-inhalation system mode according to an embodiment of the present invention;

7 is a schematic diagram of a connection of a three-way valve used as a switching device and in a non-re-inhalation system mode according to an embodiment of the present invention;

8 is a schematic diagram of a connection of a breathing apparatus of an anesthesia machine using a turbine as a driving device and in a re-inhalation system mode according to an embodiment of the present invention;

9 is a schematic diagram of a connection of a breathing apparatus of an anesthesia machine using a turbine as a driving device and in a non-re-inhalation system mode according to an embodiment of the present invention;

FIG. 10 is a schematic diagram showing the connection of the breathing apparatus of the anesthesia machine using the piston type driving device in the re-inhalation system mode according to the embodiment of the present invention; FIG.

FIG. 11 is a schematic diagram showing the connection of the breathing apparatus of the anesthesia machine using the piston type driving device in the non-re-inhalation system mode according to the embodiment of the present invention.

Embodiments of the invention

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It is to be noted that when an element is referred to as being "fixed" or "in" another element, it can be directly on the other element or the central element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or the central element.

It should also be noted that the terms of the left, right, up, and down orientations in this embodiment are merely relative concepts or reference to the normal use state of the product, and should not be considered as limiting.

As shown in FIG. 1 and FIG. 2, an anesthesia machine breathing system provided by an embodiment of the present invention includes a driving branch and an exhaust line 31, and further includes selectively introducing gas exhaled by the patient 1 into the driving branch. The switching device 14 of the road or the exhaust line to achieve switching between re-doping and no re-suction. An absorption device 8 for absorbing carbon dioxide in the gas stream is disposed in the driving branch, and a carbon dioxide adsorbing material such as sodium lime may be provided in the absorption device 8. Thus, when a gas anesthesia is used, the switching device 14 can conduct the gas exhaled by the patient 1 to the driving branch, and the anesthesia breathing system can operate in the re-inhalation system mode, as shown in FIG. 1 or FIG. When intravenous anesthesia is used, the switching device 14 can conduct the gas exhaled by the patient 1 to the exhaust line 31, and the anesthesia breathing system can operate in the no-re-inhalation system mode, as shown in FIG. 2 or FIG. The exhaust line 31 can directly discharge the exhaled gas, and the exhaled gas does not need to pass through the absorption device 8, and the switching device 14 is provided and the connection of the pipeline is improved, so that the anesthesia breathing system can be selected to be in the re-inhalation system, no re-inhalation. The working mode of the system and the ventilator overcomes the technical problem that the medical personnel need to pay attention to whether the carbon dioxide absorbent needs to be replaced when the intravenous anesthesia is performed in the prior art, and avoid the problem that the customer inhales excessive carbon dioxide in this mode, and the exhalation airflow does not need to be After the carbon dioxide absorber, there is no problem that the carbon dioxide absorber will generate a large amount of water vapor after absorbing the carbon dioxide, which may easily cause condensation and water accumulation in the circuit. At this time, it is not necessary for the medical staff to pay attention to whether the carbon dioxide absorbent needs to be replaced, and at the same time reduce the light. The burden of medical staff.

Specifically, the driving branch includes an exhalation line 4, an inspiratory line 3, a fresh gas supply line 7, a gas delivery device 9, an absorption device 8 for absorbing carbon dioxide in the gas stream, and a control for inspiratory pressure and For the flow rate driving device 12, the driving device 12 can be connected with a gas source gas. The exhalation line 4 and the inspiratory line 3 are connected to the patient line 2, and the patient line 2 is connected to the respiratory channel or the nose and mouth of the patient 1, and the expiratory flow of the patient 1 exhales from the exhalation line 4. The inspiratory flow of the patient 1 when inhaling comes from the inspiratory line 3. A carbon dioxide absorber may be disposed in the absorption device 8. The anesthesia machine breathing system further includes a switching device 14 for selectively introducing the exhalation line 4 into the gas delivery device 9 or the exhaust line 31. It should be noted that the introduction in the embodiment includes the connection state. The conduction may also include connection and conduction in an unconnected state. The exhalation line 4 is connected to the switching device 14, and the gas delivery device 9 is connected to the switching device 14 and the inspiratory line 3, and the absorption device 8 is connected to the inspiratory line 3 or to the exhalation line 4 or to the gas line. Between the device 9 and the suction line 3, the fresh gas supply line 7 is connected to the suction line 3 or the gas delivery device 9, and the drive unit 12 is connected to the switching device 14 and the gas delivery device 9. Alternatively, the drive device 12 is connected to the switching device 14. Thus, when the gas anesthesia is used, the switching device 14 can conduct the exhalation line 4 to the gas delivery device 9, and the anesthesia breathing system can operate in the re-inhalation system mode, as shown in FIG. 1 or FIG. When exhaling, the fresh gas supply line 7 allows fresh air (which can be mixed with anesthetic gas) to enter the gas delivery device 9, and the gas delivery device 9 causes the airflow to flow to the inspiratory line 3 and flow through the absorption by the driving device 12. Device 8 filters out carbon dioxide for inhalation by patient 1. When the intravenous anesthesia is used, the switching device 14 can conduct the exhalation line 4 to the exhaust line 31, and the anesthesia breathing system can operate in the no-re-inhalation system mode, as shown in FIG. 2 or FIG. The exhaust line 31 can directly discharge the exhaled gas, and the exhaled gas does not need to pass through the absorption device 8, and the switching device 14 is provided and the connection of the pipeline is improved, so that the anesthesia breathing system can be selected to be in the re-inhalation system, no re-inhalation. The working mode of the system and the ventilator overcomes the technical problem that the medical personnel need to pay attention to whether the carbon dioxide absorbent needs to be replaced when the intravenous anesthesia is performed in the prior art, and avoid the problem that the customer inhales excessive carbon dioxide in this mode, and the exhalation airflow does not need to be After the carbon dioxide absorber, there is no problem that the carbon dioxide absorber will generate a large amount of water vapor after absorbing the carbon dioxide, which may easily cause condensation and water accumulation in the circuit. At this time, it is not necessary for the medical staff to pay attention to whether the carbon dioxide absorbent needs to be replaced, and at the same time reduce the light. The burden of medical staff.

The anesthesia machine breathing system provided by the embodiment of the invention can perform rapid switching between the non-re-inhalation system and the re-inhalation system, and the product is flexible and versatile, and can be used for intravenous anesthesia and as a ventilator in a non-re-inhalation system mode. Use; in the re-inhalation system mode, can be used for traditional gas anesthesia without additional breathing system.

Specifically, as shown in FIGS. 1 and 2, the exhalation line 4 can be connected with the exhalation check valve 6 to prevent backflow of gas.

Specifically, as shown in FIGS. 1 and 2, the suction line 3 can be connected with the suction check valve 5 to prevent the gas from flowing backward.

Specifically, as shown in FIGS. 1 to 4, the absorption device 8 is connected to the suction line 3, and the absorption device 8 is connected in parallel with the bypass branch 8a, the line between the bypass branch 8a and the suction line 3. A bypass switching valve 10 is connected to the line between the absorption device 8 and the suction line 3, and the bypass switching valve 10 communicates the absorption device 8 with the suction line 3 or the bypass branch 8a and the suction The gas line 3 is connected, that is, the bypass switching valve 10 One end is connected to the line between the bypass branch 8a and the suction line 3, and the other end is connected to the line between the absorption device 8 and the suction line 3. When switching to the no-re-inhalation system mode, by bypassing the switching valve 10, when the patient 1 exhales, the gas in the fresh gas supply line 7 can flow through the bypass branch 8a into the gas delivery device 9, for the re-inhalation system The bypass branch 8a maintains the connection of the gas path while replacing the sodium lime in the absorption device 8. In the case of no re-inhalation system, the driving gas can be directly supplied to the patient, the driving gas does not have carbon dioxide, and the patient exhaled gas does not need to be reused, so sodium or lime is not needed, and at this time, it can be switched to the bypass branch 8a, or The soda lime is poured out without switching to the bypass branch 8a. The bypass switching valve 10 may be provided in two, which are disposed at both ends of the absorption device 8 and the bypass branch 8a. Of course, only one bypass switching valve 10 may be provided. The bypass switching valve 10 can be a suitable component such as a two-position three-way valve.

Specifically, as shown in FIG. 1 to FIG. 4, a connection line 32 is connected between the gas delivery device 9 and the switching device 14, and the connection line 32 is connected to the switching device 14 through the first branch pipe 33, and the connection line 32 is connected. The second branch pipe 34 is connected to the suction line 3, and the connection line 32, the first branch pipe 33 and the second branch pipe 34 are connected by a three-way joint. The absorbing device 8 and the bypass branch 8a and the bypass switching valve 10 can be connected to the second branch pipe 34. A manual machine-operated switching valve 15 is connected to the connecting line 32, and a manual control switching valve 15 is connected to the manual control unit. The manual machined switching valve 15 can be switched to the electric mode or the manual mode, and the switching process can be automatically controlled by the system or manually controlled by the medical staff. When switching to the electric mode, the drive unit 12 is driven by the power source. When switching to manual mode, healthcare personnel can operate by manually controlling the components.

Specifically, as shown in FIGS. 1 to 4, the manual control unit includes an exhaust gas discharge pipe 35 connected to the manual machine control switching valve 15, and the exhaust gas discharge pipe 35 is connected with a pressing member such as a manual bladder 16 or a rubber ball, and an adjustable pressure limit. Valve 17 (APL). The exhaust gas discharge pipe 35 can be connected to an exhaust gas treatment pipe or the like.

Specifically, the drive branch further includes an intake line 18, the switching device 14 can connect the drive device 12 with the expiratory line 4 and the inspiratory line 3, or the switching device 14 will connect the intake line 18. It is connected to the inspiratory line 3, and the exhalation line 4 is connected to the exhaust line 31, and corresponds to the state of Fig. 1 and Fig. 2, respectively.

Specifically, in this embodiment, as shown in FIG. 1 to FIG. 4, the switching device 14 has a first inlet 14a, a second inlet 14b, a first outlet 14c and a second outlet 14d, and the switching device 14 includes a first The inlet 14a is electrically connected to the first outlet 14c, the second inlet 14b and the second outlet 14d, and a switching mechanism for switching to the first inlet 14a and the second outlet 14d, and the second inlet 14b and the first outlet 14c are electrically connected. High reliability and easy switching process. The spool driving mode of the switching mechanism can be manual, pneumatic or electromagnetic force driving.

Specifically, as shown in FIG. 1 to FIG. 4, the driving device 12 is connected with an intake pipe 18, and the intake pipe 18 and the first branch pipe 36 are both connected to the driving device 12, and the other end of the first branch pipe is connected to the first inlet 14a. . Intake line 18 can provide gas, the driving device 12 is connected to the first inlet 14a through the first branch pipe 36, the driving device 12 is connected to the gas conveying device 9 through the second branch pipe 37, and the second inlet 14b is connected to the exhalation line 4, the first outlet 14c is connected to the exhaust line 31, the second outlet 14d is connected to the gas delivery device 9 and the suction line 3, and the second outlet 14d is connectable to the first branch pipe 33, the first branch pipe 33, the second branch pipe 34 and the connecting pipe The road 32 can be connected by a tee. When in the re-inhalation system mode, the first inlet 14a is in communication with the first outlet 14c and the second inlet 14b is in communication with the second outlet 14d. When in the no-reduction system mode, the first inlet 14a communicates with the second outlet 14d, and the second inlet 14b communicates with the first outlet 14c. At this time, the driving device 12 passes through the first branch 36, the first inlet 14a, and the first The second outlet 14d and the second branch pipe 34 can be connected to the suction line 3 together with the fresh gas supply line 7. In the specific application, the second branch pipe 34, the fresh gas supply line 7 and the suction line 3 can be connected to On a tee.

Alternatively, the driving device 12 may be connected to the switching device 14 via the gas delivery device 9. In this case, it is not necessary to provide the first branch pipe 36, the driving device 12 is connected to the gas delivery device 9, and the gas delivery device 9 is connected to the switching device 14.

Specifically, the exhaust line 31 is connected to the exhalation valve 13.

The gas delivery device 9 can be physically or non-physically isolated. Specifically, the gas delivery device 9 can be a folded capsule gas delivery device (as shown in FIG. 1 and FIG. 2), and a tortuous airway gas delivery device (eg, Figure 3, Figure 4), or a piston type gas delivery device. When a piston type gas delivery device is used, it can also be driven by a motor.

In this embodiment, the folded-pocket gas delivery device includes a housing and a folded bag disposed in the housing, and a space between the outer side of the folded bag and the inner side of the case communicates with the driving device 12, and a space inside the folded bag communicates with the switching device 14 And a suction line 3; the meandering airway type air delivery device comprises a single, two or more zigzag air passages connected in parallel, the tortuous air passage is connected to the switching device 14 and the suction line 3; The piston type gas transmission device includes a housing and a piston slidably disposed in the housing, and a housing of the piston type gas transmission device is coupled to the switching device 14 and the suction line 3.

Specifically, as shown in FIG. 5, the switching device 14 may be a two-position four-way reversing valve or a two-position three-way reversing valve 140 or the like. The two-position three-way switching valve 140 may be provided with one, two or more.

Specifically, the drive unit 12 can control the flow or pressure magnitude of the output through a proportional valve or turbine.

Specifically, an adsorption material for adsorbing carbon dioxide is provided in the absorption device 8 (absorption tank), and the adsorption material is sodium lime.

The anesthesia machine breathing system provided by the embodiment of the invention has the switching device 14 as a system switching valve, which can realize switching between the double suction system and the non-re-inhalation system. Figure 1 shows the state of the re-inhalation system. The anesthesia machine is used for gas anesthesia. When the patient 1 exhales, the exhaled gas flows through the patient line 2, the exhalation port (exhalation line 4) and the exhalation check valve 6, The second inlet 14b (port b) entering the switching device 14 exits the second outlet 14d (d-port) into the gas delivery device 9, while the fresh gas carrying the gas anesthetic drug passes through the fresh gas supply line 7 and also through the absorption device. 8 enters the gas delivery device 9, at which time the drive device 12 is closed, and the mixed gas formed by the exhaled gas and the gas supplied from the fresh gas supply line 7 pushes the drive gas in the gas delivery device 9 to the first inlet 14a of the switching device 14 ( a port), exiting the first outlet 14c (c port) into the exhalation valve 13, and discharging through the exhaust gas discharge port 19 of the exhaust line 31. Since there is an anesthetic gas in the exhaust gas, the exhaust gas discharge port 19 is usually connected to the exhaust gas of the hospital. The treatment system, the exhalation valve 13 can control the pressure of the exhalation of the patient 1; when the patient 1 inhales, the driving gas generated by the driving device 12 enters the gas delivery device 9, and pushes the mixed gas of the exhaled gas and the fresh gas supply line 7. After absorption device 8, gas When the absorption device 8 passes through the absorption device 8, the carbon dioxide is filtered out by the sodium and lime in the absorption device 8, and the exhaled gas which filters out the carbon dioxide flows together with the fresh gas supply line 7 through the suction check valve 5 and the suction port (the suction line 3). ), re-entering the lungs of patient 1 via patient line 2 to complete a breathing cycle. The pressure and flow control of the inspiratory phase of the patient 1 is controlled by the driving device 12, which may be a proportional valve or a turbine. If a proportional valve is used as the driving device, the gas source gas may be a compressed oxygen/air bottle or a central gas from a hospital. Source; if the drive unit 12 is of a turbine type, the source gas may be taken from the atmosphere in the environment; if the gas delivery unit 9 is a piston, the drive unit 12 may be a motor. The manual machined switching valve 15 can switch the system to the manual mode, at which time the ventilation is controlled by the manual bladder 16, and excess gas is discharged through the APL valve (adjustable pressure limiting valve 17).

Figure 2 shows the breathing system of the anesthesia machine of Figure 1 switched to the state of no re-inhalation system. In the non-re-inhalation system, the carbon dioxide absorbent is not necessary, and the carbon dioxide absorbent in the absorption device 8 can be removed. As shown in FIG. 2, the bypass switching valve 10 is switched to the bypass branch 8a, and the switching mode may be automatic switching of the machine or manual switching. When the patient 1 exhales, the exhaled gas flows through the patient line 2, the exhalation port (exhalation line 4) and the exhalation check valve 6, and enters the second inlet 14b (b port) of the switching device 14, from the first An outlet 14c (c port) is directly discharged by the exhalation valve 13, and since the patient 1 exhaled gas does not contain anesthetic gas, it can be directly discharged into the surrounding environment, and the exhalation valve 13 can control the pressure of the exhalation of the patient 1; When the patient 1 inhales, the driving gas generated by the driving device 12 does not pass through the gas conveying device 9, enters from the first inlet 14a (a port) of the switching device 14, the second outlet 14d (d port) comes out, and then passes through the absorption device in sequence. 8 or the bypass branch 8a, the suction check valve 5, the suction port (suction line 3), enter the patient 1 lung through the patient line 2, and complete a breathing cycle. The pressure and flow control of the patient 1 inspiratory phase is controlled by the drive unit 12. By switching to a non-re-inhalation system state, the anesthesia machine operates in a "ventilator mode" and can be used for intravenous anesthesia or as a ventilator.

Compared with the anesthesia breathing system using physical isolation as shown in Fig. 1 and Fig. 2, for the non-physically isolated anesthesia breathing system, it is typical to use a single or multiple parallel elongated air passages. As shown in FIGS. 3 and 4, the gas transfer device 9 can be slightly deformed. Figure 3 shows the switch to the state of the re-inhalation system, and Figure 4 shows the switch to the non-re-inhalation system state. Since the gas delivery device 9 does not isolate the driving gas from the respiratory system like a folded capsule or a piston, unlike the embodiment of Figs. 1 and 2, in the state of no re-inhalation system, as shown in Fig. 4, the patient 1 inhales. At the same time, the driving gas does not flow through the switching device 14, but directly passes through the gas delivery device 9, and then passes through the absorption device 8 or the bypass branch 8a, the suction check valve 5, and the suction port (the suction line 3). Entering the lungs of patient 1 via patient line 2.

The switching device 14 can adopt a two-position four-way reversing valve as shown in FIG. 1 to FIG. 4, and can also be composed of a plurality of valves. A typical two-position three-way reversing valve combination as shown in FIG. Made. Of course, it will be understood that the implementation of the switching device 14 is not limited to the illustrated embodiment, but may be implemented by a rotary valve or the like. The switching device 14 can be switched by manual or automatic switching, and the driving scheme can be set according to actual conditions.

Hereinafter, a three-way valve is taken as the switching device 14, which has a second inlet 14b (port), a first outlet 14c (c), and a second outlet 14d (d). Figure 6 shows the state of the re-inhalation system. The anesthesia machine is used for gas anesthesia. When the patient 1 exhales, the exhaled gas flows through the patient line 2, the exhalation port (exhalation line 4) and the exhalation check valve 6, The second inlet 14b (port b) entering the switching device 14 exits the second outlet 14d (d-port) into the gas delivery device 9, while the fresh gas carrying the gas anesthetic drug passes through the fresh gas supply line 7 and also through the absorption device. 8 enters the gas delivery device 9, at which time the driving device 12 is turned off, and the mixed gas formed by the exhaled gas and the gas supplied from the fresh gas supply line 7 pushes the driving gas in the gas delivery device 9 to the exhaust gas discharged through the exhaust line 31. The mouth 19 is discharged. Due to the anesthetic gas in the exhaust gas, the exhaust gas discharge port 19 is usually connected to the hospital's exhaust gas treatment system, and the exhalation valve 13 can control the pressure of the patient 1 exhaling; when the patient 1 inhales, the driving device 12 generates The driving gas enters the gas delivery device 9, and the mixed gas of the exhaled gas and the fresh gas supply line 7 is pushed through the absorption device 8. When the gas passes through the absorption device 8, the carbon dioxide is filtered by the sodium and lime in the absorption device 8, and the carbon dioxide is filtered out. The exhaled gas and the fresh gas supply line 7 flow together through the suction check valve 5, the suction port (suction line 3), and enter the patient 1 lung again through the patient line 2 to complete a breathing cycle. The pressure and flow control of the inspiratory phase of the patient 1 is controlled by the driving device 12, which may be a proportional valve or a turbine. If a proportional valve is used as the driving device, the gas source gas may be a compressed oxygen/air bottle or a central gas from a hospital. Source; if the drive unit 12 is of a turbine type, the source gas may be taken from the atmosphere in the environment; if the gas delivery unit 9 is a piston, the drive unit 12 may be a motor. The manual machined switching valve 15 can switch the system to the manual mode, at which time the ventilation is controlled by the manual bladder 16, and excess gas is discharged through the APL valve (adjustable pressure limiting valve 17).

Figure 7 is a diagram showing the state in which the respiratory system of the multifunctional anesthesia machine of Figure 6 is switched to the non-re-inhalation system. In the non-re-inhalation system, the carbon dioxide absorbent is not necessary, and the carbon dioxide absorbent in the absorption device 8 can be removed. It is also possible to switch to the bypass branch 8a by the bypass switching valve 10, and the switching mode may be automatic switching of the machine or manual switching. When the patient 1 exhales, the exhaled gas flows through the patient line 2, the exhalation port (exhalation line 4) and the exhalation check valve 6, and enters the second inlet 14b (b port) of the switching device 14, from the first An outlet 14c (c port) is directly discharged by the exhalation valve 13, and since the patient 1 exhaled gas does not contain anesthetic gas, it can be directly discharged into the surrounding environment, and the exhalation valve 13 can control the pressure of the exhalation of the patient 1; When the patient 1 inhales, the driving gas generated by the driving device 12 sequentially passes through the absorption device 8 or the bypass branch 8a, the suction check valve 5, the suction port (the suction line 3), and enters the patient through the patient line 2. In the lungs of 1 , complete a breathing cycle. The pressure and flow control of the patient 1 inspiratory phase is controlled by the drive unit 12. By switching to a non-re-inhalation system state, the anesthesia machine operates in a "ventilator mode" and can be used for intravenous anesthesia or as a ventilator.

Hereinafter, the driving device 12 is connected to the exhalation line 4 or the inspiratory line 3 as an example. As shown in FIG. 8 and FIG. 9, a turbine is used as the driving device 12, and the turbine is located on the inhalation line 3, exhaling. The valve 6 is located on the expiratory line 4. As shown in Fig. 8, during re-inhalation, during the exhalation phase, the turbine 12 is stopped or operated at a low speed, the exhalation valve 13 is opened, and the exhaled gas is stored in the skin capsule 16; during the inhalation phase, the exhalation valve 13 is closed, the turbine is at the required pressure or The flow output outputs the gas stored in the bladder 16 to the patient. As shown in Fig. 9, when there is no re-inhalation, the air is directly inhaled into the atmosphere during exhalation, and the turbine is pumped from the ambient intake line 18 to the patient during inhalation. The position of the turbine can also be at the position of the expiratory line 4 or the second branch 34, and the exhalation valve 13 can also be provided between the exhalation check valve 6 and the patient line 2. The driving device 12 can also adopt a piston type driving device. The piston type driving device includes a piston chamber and a piston disposed in the piston chamber. As shown in FIG. 10 and FIG. 11, the gas is first sucked into the piston chamber when inhaling, and when exhaling. The gas is forced out from the piston chamber, and the check valve 51 ensures that the gas pushed out by the piston does not flow backward. The piston type driving device is connected to the suction line 3, and the suction line 3 can also be connected with the check valve. 51. The piston type drive unit can be connected to the line between the check valve 51 and the intake valve 5.

The anesthesia machine breathing system and anesthesia machine provided by the embodiments of the present invention are capable of performing quick switching between the non-re-inhalation system and the re-inhalation system, which can eliminate the disadvantages of the prior art, and, for different driving types, such as Proportional valve actuation or turbine drive, as well as different gas delivery devices 9, such as a folded bladder, piston or tortuous airway, enable switching between a non-re-inhalation system and a re-inhalation system. When switching to the state of the re-inhalation system, the anesthesia machine can be used for traditional gas anesthesia; when switching to the non-re-inhalation system, the driving gas is directly inhaled by the patient 1, and the exhaled gas of the patient 1 is controlled to be discharged to the outside through the exhalation valve 13, not in the respiratory system. It can be used for intravenous anesthesia and as a ventilator. The product is flexible and versatile. When switching to the non-re-inhalation system, the driving gas is directly inhaled by the patient 1, and the exhaled gas of the patient 1 is controlled to be discharged to the outside through the exhalation valve 13, and is not recycled in the respiratory system, and the medical staff need not always pay attention to whether the carbon dioxide absorbent needs to be replaced or not. The burden of medical staff. Moreover, the anesthesia machine respiratory system provided by the embodiment of the present invention is not limited by the type of the gas delivery device, and may be a folding capsule, a piston or a tortuous airway type gas delivery device; and is not limited by the driving mode, and the driving device is It can be a proportional valve drive or a turbo drive.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and scope of the present invention should be included in the scope of the present invention. Inside.

Claims

An anesthesia machine breathing system, comprising: a driving branch, an exhaust line, an expiratory line and an inspiratory line; further comprising connecting the driving branch to the expiratory line and the inspiratory line, or A switching device that connects the drive branch to the suction line and connects the exhalation line to the exhaust line to effect switching between re- or no re-absorption.
The anesthesia machine breathing system according to claim 1, wherein said driving branch includes driving means for controlling suction pressure and flow rate, said driving means being respectively connected to said switching means via two sets of pipes And the inspiratory line; or the driving device is connected to the exhalation line or the inspiratory line; or the driving device is connected to the switching device.
The anesthesia machine breathing system according to claim 2, wherein the driving branch further comprises a gas delivery device; the inspiratory line or the gas delivery device is connected with a fresh gas supply line, the call a gas line and an exhaust line connected to the switching device, the gas delivery device being connected to the switching device and the inspiratory line, the inspiratory line or the expiratory line or the An absorption device is connected between the gas delivery device and the suction line.
The anesthesia machine breathing system according to claim 3, wherein said absorbing means is connected to said suction line, said absorbing means is connected in parallel with a bypass branch, said multifunctional anesthesia machine breathing system having a side The bypass switching valve communicates with the suction line or communicates the bypass branch with the suction line.
The anesthesia machine breathing system according to claim 3, wherein a connecting line is connected between the gas conveying device and the switching device, and the connecting pipe is connected to the switching device through a first branch pipe. The connecting pipe is connected to the air suction pipe through a second branch pipe, and a manual machine control switching valve is connected to the connecting pipe, and the manual machine control switching valve is connected with a manual control component.
The anesthesia machine breathing system according to claim 5, wherein said manual control unit comprises an exhaust gas discharge pipe connected to said manual machine control switching valve, said exhaust gas discharge pipe being connected with a manual bladder, an adjustable pressure limit valve.
The anesthesia machine breathing system according to claim 2, wherein said driving branch further comprises an intake line, said switching means connecting said driving means to the expiratory line and the inspiratory line, or The switching device connects the intake line to the intake line and connects the exhalation line to the exhaust line.
The anesthesia machine breathing system according to claim 3, wherein the switching device is a two-position four-way reversing valve or a two-position three-way reversing valve.
The anesthesia machine breathing system according to any one of claims 3 to 8, wherein the switching device is a two-position four-way reversing valve having a first inlet, a second inlet, a first outlet, and a second An outlet, the switching device includes means for conducting the first inlet with the first outlet, the second inlet and the second outlet, and for switching to the first inlet and the second outlet, the second inlet a switching mechanism in which the first outlet is turned on, the driving device is connected to the first inlet through a first branch, the driving device is connected to the gas conveying device through a second branch, and the second inlet is connected to the An exhalation line, the first outlet is connected to the exhaust line, and the second outlet is connected to the gas delivery device and the inspiratory line.
The anesthesia machine breathing system according to any one of claims 2 to 8, characterized in that the exhaust line is connected to an exhalation valve.
The anesthesia machine breathing system according to any one of claims 3 to 8, wherein the gas delivery device is a folding capsule type gas delivery device, a tortuous airway type gas delivery device or a piston type gas delivery device.
The anesthesia machine breathing system of claim 11 wherein said folding bladder delivery device comprises a housing and a folded bladder disposed within said housing, said outer side of said folded bladder and said inner side of said housing The space between the space is connected to the driving device, the space inside the folding bag is connected to the switching device and the air suction line; the meandering air channel type air conveying device comprises a single, two or more parallel The tortuous air passage is connected to the switching device and the suction line; the piston type air delivery device includes a housing and a piston slidably disposed in the housing, the piston type A housing of the gas device is coupled to the switching device and the suction line.
An anesthesia machine breathing system according to any one of claims 2 to 8 wherein the drive means controls the flow or pressure magnitude of the output via a proportional valve, turbine or piston.
The anesthesia machine breathing system according to any one of claims 2 to 8, characterized in that the absorption device is provided with an adsorbing material for adsorbing carbon dioxide.
An anesthesia machine comprising the anesthesia machine breathing system of any one of claims 1 to 8.