CN109771767B - Pneumatic standby flow meter control system of anesthesia machine - Google Patents
Pneumatic standby flow meter control system of anesthesia machine Download PDFInfo
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Abstract
The invention relates to the technical field of medical equipment, and discloses a pneumatic standby flow meter control system of an anesthesia machine, which comprises: an oxygen source, a laughing gas source and an air source; the standby flow meter is respectively connected with the oxygen gas source, the laughing gas source and the air source pipeline; the output interface is arranged at the output end of the standby flowmeter and is connected with the standby flowmeter through a pipeline; the cylinder is arranged on one side of the standby flowmeter; and the input end of the gas path component is connected with an oxygen gas source pipeline, and the output end of the gas path component is connected with a cylinder pipeline. The gas circuit subassembly plays the start-up effect, through the concertina movement of gas circuit subassembly control cylinder, and then drives reserve flowmeter and carry out concertina movement, makes things convenient for reserve flowmeter to hide when not working, regulates and control the gas flow of oxygen air supply, laughing gas air supply and air supply through reserve flowmeter, improves the mist of corresponding proportion for outside anesthesia machine to improve anesthesia machine's safety in utilization.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a pneumatic standby flow meter control system of an anesthesia machine.
Background
Anesthesia as a medical treatment has been increasingly recognized and practiced by the medical community. The air anesthesia machine device is portable and applicable, can directly use air and oxygen as carrier gas, can carry out auxiliary respiration and control respiration, and meets various operation requirements; the working principle is as follows: after the patient completes anesthesia induction, the air anesthesia machine is connected with a closed mask or an endotracheal tube. When in inhalation, the anesthetic mixed gas enters the body of the patient through the opened inhalation valve; when the respirator exhales, the exhalation valve is opened, and the inhalation valve is closed at the same time, so that exhaled air is discharged. When assisted or controlled breathing is used, a folding bellows may be utilized. The pressure is pressed when inhaling and the pull is carried out when exhaling, thus ensuring that the patient has enough ventilation capacity. Meanwhile, the ether switch is adjusted according to actual requirements to maintain a stable anesthesia level.
In the prior art, when the anesthesia machine is not in a standby flow control state, the main control flow meter fails to work, so that the machine cannot work; when the standby flow meter of the anesthesia machine is only in an oxygen state, the main control flow meter is invalid, and only oxygen can be used, and mixed gas cannot be used; when the standby flowmeter control system of the anesthesia machine is in an electric control state, the machine can not work when a power supply system fails; therefore, the lack of a corresponding back-up flow meter can affect the safety of use of the anesthesia machine.
Therefore, how to improve the safety of the backup flow control of the anesthesia machine becomes a technical problem to be solved urgently.
Disclosure of Invention
The invention aims to solve the technical problem of how to improve the safety of the standby flow control of the anesthesia machine.
To this end, according to a first aspect, an embodiment of the present invention discloses a pneumatic standby flow meter control system for an anesthesia machine, including: an oxygen source for providing an oxygen input; the laughing gas source is used for providing laughing gas input; an air supply for providing an air input; the standby flow meter is respectively connected with the oxygen gas source, the laughing gas source and the air source pipeline and is used for adjusting and controlling the gas flow of the oxygen gas source, the laughing gas source and the air source so as to ensure that the external anesthesia machine provides the required gas flow when the main control flow meter fails; the output interface is arranged at the output end of the standby flowmeter, is connected with the standby flowmeter through a pipeline, and is used for being connected to an external anesthesia machine and outputting the gas flow of the oxygen gas source, the laughing gas source and the air gas source which are regulated and controlled by the standby flowmeter; the cylinder is arranged on one side of the standby flowmeter and is used for pneumatically controlling the telescopic motion of the standby flowmeter so as to conveniently hide the standby flowmeter when the standby flowmeter does not work; and the input end of the gas path assembly is connected with an oxygen gas source pipeline, and the output end of the gas path assembly is connected with a cylinder pipeline and is used for transmitting oxygen of the oxygen gas source and pneumatically controlling a piston rod of the cylinder to perform telescopic motion.
Optionally, the method further comprises: and the input end of the first one-way valve is connected with the oxygen gas source pipeline, and the output end of the first one-way valve is connected with the standby flow meter pipeline and used for controlling the oxygen flow direction of the oxygen gas source.
Optionally, the method further comprises: and the input end of the second one-way valve is connected with a laughing gas source pipeline, and the output end of the second one-way valve is connected with a standby flowmeter pipeline and used for controlling the flow direction of laughing gas of the laughing gas source.
Optionally, the method further comprises: and the input end of the third one-way valve is connected with the air source pipeline, and the output end of the third one-way valve is connected with the standby flow meter pipeline and used for controlling the air flow direction of the air source.
Optionally, the method further comprises: and the input end of the cutoff valve is connected with the oxygen gas source pipeline, and the output end of the cutoff valve is connected with the standby flowmeter pipeline and used for cutting off the oxygen input of the oxygen gas source.
Optionally, the back-up flow meter comprises: the input end of the oxygen flow meter is connected with the oxygen source pipeline, and the output end of the oxygen flow meter is connected with the output interface pipeline and used for adjusting and controlling the gas flow of the oxygen source; the input end of the laughing gas flowmeter is connected with the laughing gas source pipeline, and the output end of the laughing gas flowmeter is connected with the output interface pipeline and used for adjusting and controlling the gas flow of the laughing gas source; the input end of the air flow meter is connected with the air source pipeline, and the output end of the air flow meter is connected with the output interface pipeline and used for adjusting and controlling the gas flow of the air source; wherein, the oxygen flow meter, the laughing gas flow meter and the air flow meter share the output end.
Optionally, the gas circuit assembly includes: the input end of the first valve is connected with the oxygen gas source pipeline and is used for controlling the oxygen input quantity of the oxygen gas source; the input end of the second valve is connected with the oxygen gas source pipeline and is used for controlling the oxygen input quantity of the oxygen gas source; the second valve and the first valve share an input end; the input end of the two-position five-way valve is respectively connected with the output end pipelines of the first valve and the second valve, and the output end of the two-position five-way valve is connected with the cylinder pipeline; the two-position five-way valve is started by oxygen inlet through the first valve and the second valve, so that the cylinder drives the standby flowmeter to perform telescopic motion.
Optionally, the method further comprises: the input end of the flow limiting valve is connected with the oxygen gas source pipeline, and the output end of the flow limiting valve is connected with the input end pipeline of the two-position five-way valve pipeline and used for limiting the amount of gas of oxygen of the oxygen gas source entering the two-position five-way valve; the flow limiting valve shares an input with the second valve.
Optionally, the first valve is a two-position three-way valve.
Optionally, the second valve is a two-position three-way valve.
The invention has the following beneficial effects: the gas circuit subassembly plays the start-up effect, through the concertina movement of gas circuit subassembly control cylinder, and then drives reserve flowmeter and carry out concertina movement, makes things convenient for reserve flowmeter to hide when not working, regulates and control the gas flow of oxygen air supply, laughing gas air supply and air supply through reserve flowmeter, improves the mist of corresponding proportion for outside anesthesia machine to improve anesthesia machine's safety in utilization.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a pneumatic standby flow meter control system of an anesthesia machine disclosed in the present embodiment.
Reference numerals: 1. a source of oxygen gas; 2. a first valve; 3. a second valve; 4. a flow-limiting valve; 5. a two-position five-way valve; 6. a cylinder; 7. a first check valve; 8. an oxygen flow meter; 9. a source of nitrous gas; 10. a shut-off valve; 11. a second one-way valve; 12. a laughing gas flow meter; 13. an air source; 14. a third check valve; 15. an air flow meter; 16. and (6) an output interface.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
A pneumatic back-up flow meter control system for an anesthesia machine, as shown in fig. 1, comprising: oxygen air supply 1, laughing gas air supply 9, air supply 13, reserve flowmeter, output interface 16, cylinder 6 and gas circuit subassembly, wherein: the oxygen gas source 1 is used for providing oxygen input; the laughing gas source 9 is used for providing laughing gas input; an air supply 13 for providing an air input; the standby flow meter is respectively connected with the oxygen gas source 1, the laughing gas source 9 and the air gas source 13 through pipelines, and is used for adjusting and controlling the gas flow of the oxygen gas source 1, the laughing gas source 9 and the air gas source 13 so as to enable the external anesthesia machine to provide the required gas flow when the main control flow meter fails; the output interface 16 is arranged at the output end of the standby flowmeter, the output interface 16 is connected with the standby flowmeter through a pipeline, and the output interface 16 is used for being connected to an external anesthesia machine and outputting the gas flow of the oxygen gas source 1, the laughing gas source 9 and the air gas source 13 which are regulated and controlled through the standby flowmeter; the cylinder 6 is arranged on one side of the standby flowmeter, and the cylinder 6 is used for pneumatically controlling the telescopic motion of the standby flowmeter so as to be conveniently hidden when the standby flowmeter is not in operation; the input end of the gas circuit component is connected with the oxygen gas source 1 through a pipeline, the output end of the gas circuit component is connected with the cylinder 6 through a pipeline, and the gas circuit component is used for transmitting oxygen of the oxygen gas source 1 and pneumatically controlling a piston rod of the cylinder 6 to perform telescopic motion. In a specific embodiment, the oxygen concentration of the output laughing gas mixture is not less than 25%.
It should be noted that, when the master control flowmeter became invalid, the gas circuit subassembly played the start-up effect, through the concertina movement of gas circuit subassembly control cylinder 6, and then drove reserve flowmeter and carry out concertina movement, made things convenient for reserve flowmeter to hide when not working, adjusted and controlled the gas flow of oxygen air supply 1, laughing gas air supply 9 and air supply 13 through reserve flowmeter, improved the mist of corresponding proportion for outside anesthesia machine to improve anesthesia machine's safety in utilization.
As shown in fig. 1, the method further includes: the input end of the first one-way valve 7 is connected with the oxygen source 1 through a pipeline, the output end of the first one-way valve 7 is connected with the standby flowmeter through a pipeline, and the first one-way valve 7 is used for controlling the oxygen flow direction of the oxygen source 1.
It should be noted that the first check valve 7 is used to control the oxygen flow direction of the oxygen source 1 to prevent the oxygen from flowing back.
As shown in fig. 1, the method further includes: second check valve 11, the input and the 9 tube couplings of laughing gas air supply of second check valve 11, the output and the reserve flowmeter tube coupling of second check valve 11, second check valve 11 is used for controlling the laughing gas flow direction of laughing gas air supply 9.
It should be noted that the second one-way valve 11 is used for controlling the laughing gas flowing direction of the laughing gas source 9 to prevent laughing gas from flowing back.
As shown in fig. 1, the method further includes: and the input end of the third one-way valve 14 is connected with the air source 13 through a pipeline, the output end of the third one-way valve 14 is connected with the standby flow meter through a pipeline, and the third one-way valve 14 is used for controlling the air flow direction of the air source 13.
It should be noted that the three-way valve is used to control the air flow direction of the air source 13 to prevent the air from flowing backward.
As shown in fig. 1, the method further includes: the input end of the cut-off valve 10 is connected with the oxygen gas source 1 through a pipeline, the output end of the cut-off valve 10 is connected with the standby flow meter through a pipeline, and the cut-off valve 10 is used for cutting off the oxygen input of the oxygen gas source 1.
As shown in fig. 1, the back-up flow meter includes: the oxygen flow meter 8, the laughing gas flow meter 12 and the air flow meter 15, wherein the input end of the oxygen flow meter 8 is connected with the oxygen source 1 through a pipeline, the output end of the oxygen flow meter 8 is connected with the output interface 16 through a pipeline, and the oxygen flow meter 8 is used for regulating and controlling the gas flow of the oxygen source 1; the input end of the laughing gas flowmeter 12 is connected with the laughing gas source 9 through a pipeline, the output end of the laughing gas flowmeter 12 is connected with the output interface 16 through a pipeline, and the laughing gas flowmeter 12 is used for adjusting and controlling the gas flow of the laughing gas source 9; the input end of the air flow meter 15 is connected with the air source 13 through a pipeline, the output end of the air flow meter 15 is connected with the output interface 16 through a pipeline, and the air flow meter 15 is used for adjusting and controlling the air flow of the air source 13; wherein, the oxygen flow meter 8, the laughing gas flow meter 12 and the air flow meter 15 share the output end.
It should be noted that the oxygen flow meter 8 is used for adjusting and controlling the gas flow of the oxygen gas source 1, the laughing gas flow meter 12 is used for adjusting and controlling the gas flow of the laughing gas source 9, and the air flow meter 15 is used for adjusting and controlling the gas flow of the air gas source 13, so that the mixed gas in a corresponding proportion can be conveniently improved for the external anesthesia machine.
As shown in fig. 1, the air path assembly includes: the oxygen supply device comprises a first valve 2, a second valve 3 and a two-position five-way valve 5, wherein the input end of the first valve 2 is connected with an oxygen gas source 1 through a pipeline, and the first valve 2 is used for controlling the oxygen input quantity of the oxygen gas source 1; the input end of the second valve 3 is connected with the oxygen gas source 1 through a pipeline, the second valve 3 is used for controlling the oxygen input amount of the oxygen gas source 1, and the second valve 3 and the first valve 2 share the input end; the input end of the two-position five-way valve 5 is respectively connected with the output ends of the first valve 2 and the second valve 3 through pipelines, and the output end of the two-position five-way valve 5 is connected with the cylinder 6 through a pipeline; the two-position five-way valve 5 is started by oxygen entering through the first valve 2 and the second valve 3, so that the cylinder 6 drives the standby flowmeter to perform telescopic motion. In a specific embodiment, a flow limiting device is arranged between the output end of the two-position five-way valve 5 and the cylinder 6, and the flow limiting device is used for limiting the oxygen amount entering the cylinder 6.
It should be noted that, the first valve 2 is opened, oxygen in the oxygen gas source 1 enters the two-position five-way valve 5 through the first valve 2, so that the oxygen passing through the flow limiting valve 4 is controlled to enter the cylinder 6, the cylinder 6 drives the standby flow meter to extend out, and the anesthesia machine can utilize and adjust the standby flow meter for use; when the standby flow meter needs to be hidden, the second valve 3 is opened, oxygen in the oxygen gas source 1 enters the two-position five-way valve 5 through the second valve 3, the cylinder 6 is controlled to exhaust gas, the oxygen is controlled to enter the cylinder 6 through the flow limiting valve 4, the cylinder 6 is driven to retract, and then the standby flow meter is driven to move, so that the standby flow meter is hidden.
As shown in fig. 1, the method further includes: the input end of the flow limiting valve 4 is connected with the oxygen gas source 1 through a pipeline, the output end of the flow limiting valve 4 is connected with the input end of the two-position five-way valve 5 through a pipeline, the flow limiting valve 4 is used for limiting the amount of gas of oxygen of the oxygen gas source 1 entering the two-position five-way valve 5, and the flow limiting valve 4 and the second valve 3 share the input end.
As shown in fig. 1, the first valve 2 is a two-position three-way valve.
As shown in fig. 1, the second valve 3 is a two-position three-way valve.
The working principle is as follows: when the anesthesia machine works, the first valve 2 is opened, oxygen in the oxygen gas source 1 enters the two-position five-way valve 5 through the first valve 2, then the oxygen passing through the flow limiting valve 4 is controlled to enter the cylinder 6, the cylinder 6 drives the standby flowmeter to extend out, and then the anesthesia machine can utilize and adjust the standby flowmeter for use;
after the operation, the second valve 3 is opened, oxygen in the oxygen gas source 1 enters the two-position five-way valve 5 through the second valve 3, the control cylinder 6 exhausts gas and controls the oxygen to enter the cylinder 6 through the flow limiting valve 4, the driving cylinder 6 retracts, and then the standby flowmeter is driven to move, so that the standby flowmeter is hidden.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (9)
1. A pneumatic back-up flow meter control system for an anesthesia machine, comprising:
an oxygen gas source (1) for providing an oxygen input;
a laughing gas source (9) for providing laughing gas input;
an air supply (13) for providing an air input;
the standby flow meter is respectively connected with the oxygen gas source (1), the laughing gas source (9) and the air gas source (13) through pipelines and is used for adjusting and controlling the gas flow of the oxygen gas source (1), the laughing gas source (9) and the air gas source (13) so as to enable the external anesthesia machine to provide the required gas flow when the main control flow meter fails;
the output interface (16) is arranged at the output end of the standby flowmeter, is connected with the standby flowmeter through a pipeline, and is used for being connected to an external anesthesia machine and outputting the gas flow of the oxygen gas source (1), the laughing gas source (9) and the air gas source (13) which are regulated and controlled through the standby flowmeter;
the cylinder (6) is arranged on one side of the standby flowmeter and is used for pneumatically controlling the telescopic motion of the standby flowmeter so as to enable the standby flowmeter to be conveniently hidden when not in work;
the input end of the gas path assembly is connected with the oxygen gas source (1) through a pipeline, the output end of the gas path assembly is connected with the cylinder (6) through a pipeline, and the gas path assembly is used for transmitting oxygen of the oxygen gas source (1) and pneumatically controlling a piston rod of the cylinder (6) to perform telescopic motion;
and the input end of the cutoff valve (10) is connected with the oxygen gas source (1) through a pipeline, and the output end of the cutoff valve is connected with the standby flowmeter through a pipeline and used for cutting off the oxygen input of the oxygen gas source (1).
2. The pneumatic back-up flow meter control system for an anesthesia machine of claim 1, further comprising:
and the input end of the first one-way valve (7) is connected with the oxygen gas source (1) through a pipeline, and the output end of the first one-way valve is connected with the standby flow meter through a pipeline and used for controlling the oxygen flow direction of the oxygen gas source (1).
3. The pneumatic back-up flow meter control system for an anesthesia machine of claim 2, further comprising:
and the input end of the second one-way valve (11) is connected with the laughing gas source (9) through a pipeline, and the output end of the second one-way valve is connected with the standby flow meter through a pipeline and used for controlling the flow direction of laughing gas of the laughing gas source (9).
4. The pneumatic back-up flow meter control system for an anesthesia machine of claim 3, further comprising:
and the input end of the third one-way valve (14) is connected with the air source (13) through a pipeline, and the output end of the third one-way valve is connected with the standby flow meter through a pipeline and used for controlling the air flow direction of the air source (13).
5. A pneumatic back-up flow meter control system for an anaesthetic machine according to any of the claims 1-4 characterized in that the back-up flow meter comprises:
the input end of the oxygen flowmeter (8) is connected with the oxygen source (1) through a pipeline, and the output end of the oxygen flowmeter is connected with the output interface (16) through a pipeline and used for regulating and controlling the gas flow of the oxygen source (1);
the input end of the laughing gas flowmeter (12) is connected with the laughing gas source (9) through a pipeline, and the output end of the laughing gas flowmeter is connected with the output interface (16) through a pipeline and used for adjusting and controlling the gas flow of the laughing gas source (9);
the input end of the air flow meter (15) is connected with the air source (13) through a pipeline, and the output end of the air flow meter is connected with the output interface (16) through a pipeline and used for adjusting and controlling the gas flow of the air source (13);
wherein the oxygen flow meter (8), the laughing gas flow meter (12) and the air flow meter (15) share an output end.
6. The pneumatic back-up flow meter control system for anesthesia machines of any of claims 1-4, wherein said pneumatic circuit assembly comprises:
the input end of the first valve (2) is connected with the oxygen gas source (1) through a pipeline and is used for controlling the oxygen input quantity of the oxygen gas source (1);
the input end of the second valve (3) is connected with the oxygen gas source (1) through a pipeline and is used for controlling the oxygen input quantity of the oxygen gas source (1); the second valve (3) shares an input with the first valve (2);
the input end of the two-position five-way valve (5) is respectively connected with the output end pipelines of the first valve (2) and the second valve (3), and the output end of the two-position five-way valve is connected with the cylinder (6) through a pipeline; the two-position five-way valve (5) is started by oxygen entering through the first valve (2) and the second valve (3) so that the cylinder (6) drives the standby flowmeter to perform telescopic motion.
7. The pneumatic back-up flow meter control system for an anesthesia machine of claim 6, further comprising:
the input end of the flow limiting valve (4) is connected with the oxygen gas source (1) through a pipeline, the output end of the flow limiting valve is connected with the input end of the two-position five-way valve (5) through a pipeline, and the flow limiting valve is used for limiting the amount of gas of oxygen of the oxygen gas source (1) entering the two-position five-way valve (5); the flow limiting valve (4) and the second valve (3) share an input end.
8. The pneumatic back-up flow meter control system of an anesthesia machine of claim 6, characterized in that said first valve (2) is a two-position three-way valve.
9. The pneumatic back-up flow meter control system of an anesthesia machine of claim 6, characterized in that the second valve (3) is a two-position three-way valve.
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| CN114616011B (en) * | 2019-12-30 | 2024-09-24 | 深圳迈瑞生物医疗电子股份有限公司 | Standby flow control system and method applied to anesthesia machine |
| CN113855982B (en) * | 2021-09-30 | 2023-07-18 | 深圳市科曼医疗设备有限公司 | Anesthesia evaporation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0788805A3 (en) * | 1996-02-06 | 1998-05-13 | DeVilbiss Health Care, Inc. | Control for CPAP apparatus |
| JP2005040422A (en) * | 2003-07-24 | 2005-02-17 | Teijin Ltd | Artificial respiration assisting apparatus |
| CN102266617B (en) * | 2010-12-31 | 2014-02-26 | 北京谊安医疗系统股份有限公司 | Gas delivery device and anesthesia machine with same |
| CN103809620B (en) * | 2012-11-13 | 2017-10-10 | 深圳迈瑞生物医疗电子股份有限公司 | electronic flow control method and system |
| CN103809622B (en) * | 2012-11-13 | 2017-07-28 | 深圳迈瑞生物医疗电子股份有限公司 | Standby electric-controlled type flow control system and method are used as using mechanical control |
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