CN114601510A - Gas control method for carbon dioxide pneumoperitoneum machine and carbon dioxide pneumoperitoneum machine - Google Patents
Gas control method for carbon dioxide pneumoperitoneum machine and carbon dioxide pneumoperitoneum machine Download PDFInfo
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- CN114601510A CN114601510A CN202210210573.1A CN202210210573A CN114601510A CN 114601510 A CN114601510 A CN 114601510A CN 202210210573 A CN202210210573 A CN 202210210573A CN 114601510 A CN114601510 A CN 114601510A
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 232
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 117
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 117
- 208000005646 Pneumoperitoneum Diseases 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims abstract description 44
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 142
- 229910002091 carbon monoxide Inorganic materials 0.000 claims abstract description 140
- 238000001914 filtration Methods 0.000 claims description 22
- 230000002829 reductive effect Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 abstract description 8
- 210000000683 abdominal cavity Anatomy 0.000 description 23
- 230000006837 decompression Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 238000012545 processing Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 7
- 230000036541 health Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 230000002411 adverse Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002324 minimally invasive surgery Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000009297 electrocoagulation Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 208000022540 Consciousness disease Diseases 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- 102000001554 Hemoglobins Human genes 0.000 description 1
- 108010054147 Hemoglobins Proteins 0.000 description 1
- 206010028813 Nausea Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 208000006752 brain edema Diseases 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002357 laparoscopic surgery Methods 0.000 description 1
- 230000008693 nausea Effects 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0281—Abdominal wall lifters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M2005/006—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests for gases, e.g. CO2
Abstract
The embodiment of the application provides a gas control method of a carbon dioxide pneumoperitoneum machine and the carbon dioxide pneumoperitoneum machine, and relates to the technical field of medical equipment. The carbon monoxide sensor is arranged in the carbon dioxide pneumoperitoneum machine, and the first air pressure of the target cavity collected by the first air pressure sensor is obtained through the controller; controlling the gas flow of the first electric proportional valve and the gas flow of the second electric proportional valve according to the first gas pressure of the target cavity; acquiring the carbon monoxide concentration of a target cavity detected by the carbon monoxide sensor; and controlling the gas flow of the first electric proportional valve and the gas flow of the second electric proportional valve according to the carbon monoxide concentration of the target cavity. This application can realize effective detection and the discharge of carbon monoxide.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to a gas control method of a carbon dioxide pneumoperitoneum machine and the carbon dioxide pneumoperitoneum machine.
Background
With the wide application of minimally invasive surgeries based on laparoscopy, researchers find that carbon monoxide is generated when an electrocoagulation instrument cuts human tissues, and the concentration value of the carbon monoxide gradually rises to a range causing human poisoning along with the prolonging of the operation time, so that consciousness disorder of patients is caused, even intracranial edema is caused, and nervous system pathological changes are caused.
Therefore, how to timely and effectively detect and discharge carbon monoxide in the abdominal cavity of a patient is a problem which needs to be solved urgently.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a gas control method for a carbon dioxide pneumoperitoneum machine and a carbon dioxide pneumoperitoneum machine, which can effectively detect and discharge carbon monoxide in the abdominal cavity of a patient.
In order to achieve the above purpose, the technical solutions adopted in the embodiments of the present application are as follows:
in a first aspect, an embodiment of the present application provides a gas control method for a carbon dioxide pneumoperitoneum machine, which is applied to a controller in the carbon dioxide pneumoperitoneum machine, where the carbon dioxide pneumoperitoneum machine includes:
the controller, a first air pressure sensor, a carbon monoxide sensor, a first electric proportional valve and a second electric proportional valve are respectively and electrically connected with the controller, the carbon monoxide sensor is communicated with the second electric proportional valve, and the second electric proportional valve is communicated with an exhaust port of the carbon dioxide pneumoperitoneum machine;
the method comprises the following steps:
acquiring a first air pressure of a target cavity acquired by the first air pressure sensor;
controlling the gas flow of the first electric proportional valve and the gas flow of the second electric proportional valve according to the first gas pressure of the target cavity;
acquiring the carbon monoxide concentration of a target cavity detected by the carbon monoxide sensor;
and controlling the gas flow of the first electric proportional valve and the gas flow of the second electric proportional valve according to the carbon monoxide concentration of the target cavity.
In an optional embodiment, the controlling the gas flow of the first electric proportional valve and the gas flow of the second electric proportional valve according to the carbon monoxide concentration of the target cavity comprises:
if the concentration of the carbon monoxide in the target cavity is greater than or equal to a target concentration threshold, respectively adjusting the gas flow of the first electric proportional valve and the gas flow of the second electric proportional valve to target flows corresponding to the target concentration thresholds.
In an alternative embodiment, the target concentration threshold includes at least one concentration threshold, and each concentration threshold corresponds to one target flow rate.
In an alternative embodiment, the carbon dioxide pneumoperitoneum device further comprises:
an air pump; the air pump is electrically connected with the controller and is communicated with the carbon monoxide sensor;
the acquiring of the carbon monoxide concentration of the target cavity detected by the carbon monoxide sensor comprises:
controlling the air pump to pump the gas in the target cavity, so that the carbon monoxide sensor collects the gas in the target cavity from the air pump and detects the carbon monoxide concentration in the target cavity;
receiving the carbon monoxide concentration of the target cavity detected by the carbon monoxide sensor.
In an alternative embodiment, the controlling the gas flow of the first electric proportional valve and the gas flow of the second electric proportional valve according to the first gas pressure of the target cavity includes:
if the first air pressure is greater than or equal to a first preset threshold value, adjusting the gas flow of the first electric proportional valve to a first flow, and adjusting the gas flow of the second electric proportional valve to a second flow, wherein the second flow is greater than the first flow;
if the first air pressure is smaller than or equal to a second preset threshold value, adjusting the gas flow of the first electric proportional valve to a third flow, and adjusting the gas flow of the second electric proportional valve to a fourth flow, wherein the third flow is larger than the fourth flow;
wherein the first preset threshold is greater than the second preset threshold.
In an alternative embodiment, the carbon dioxide pneumoperitoneum device further comprises: the electromagnetic valve is electrically connected with the controller and is communicated with the first electric proportional valve;
the method further comprises the following steps:
if the first air pressure is larger than or equal to a third preset threshold value, the electromagnetic valve and the first electric proportional valve are closed, and the air flow of the second electric proportional valve is adjusted to the maximum air flow of the second electric proportional valve.
In an alternative embodiment, the carbon dioxide pneumoperitoneum device further comprises:
a second air pressure sensor electrically connected to the controller;
the method further comprises the following steps:
acquiring a second air pressure of the input air collected by a second air pressure sensor;
and if the second air pressure is not within the working air pressure interval, closing the electromagnetic valve.
In an alternative embodiment, the carbon dioxide pneumoperitoneum device further comprises:
the device comprises a pressure reducing assembly, a temperature control assembly and a filtering assembly;
the pressure reducing assembly is communicated with an external air source, the pressure reducing assembly is communicated with the second air pressure sensor, the second air pressure sensor is communicated with the temperature control assembly, the temperature control assembly is communicated with the filtering assembly, and the filtering assembly is communicated with the electromagnetic valve;
the obtaining a second gas pressure of the input gas collected by the second gas pressure sensor includes:
after the carbon dioxide pneumoperitoneum machine is started, the input gas from the external gas source is decompressed by the decompression assembly, the decompressed gas is input into the second gas pressure sensor, the second gas pressure of the decompressed gas is detected by the second gas pressure sensor, and the second gas pressure is sent to the controller.
In an optional embodiment, the gas control method of a carbon dioxide pneumoperitoneum machine further comprises:
and the second air pressure sensor transmits the decompressed gas to the temperature control assembly, the temperature control assembly adjusts the temperature of the decompressed gas to a target temperature, transmits the gas with the target temperature to the filtering assembly, and the filtering assembly filters the gas with the target temperature and transmits the filtered gas to the electromagnetic valve.
In a second aspect, an embodiment of the present application provides a carbon dioxide pneumoperitoneum apparatus, including:
the device comprises a controller, and a first air pressure sensor, a carbon monoxide sensor, a first electric proportional valve and a second electric proportional valve which are electrically connected with the controller respectively;
the controller executes the gas control method of the carbon dioxide pneumoperitoneum machine of any one of the preceding embodiments when the carbon dioxide pneumoperitoneum machine is operating.
The beneficial effects of the embodiment of the application include, for example:
adopt the carbon dioxide pneumoperitoneum machine's that this application provided gas control method and carbon dioxide pneumoperitoneum machine, at first, increased foretell detection and discharge carbon monoxide's function by carbon dioxide pneumoperitoneum machine when supporting original balanced patient intra-abdominal pressure balanced function in this application, need not to increase extra equipment promptly and can realize the detection and the discharge of patient intra-abdominal carbon monoxide to the cost has been saved and the ease for use has been promoted. Secondly, utilize the carbon monoxide sensor to monitor the concentration value of the carbon monoxide in the patient's abdominal cavity immediately, when detecting that the patient's abdominal cavity surpasss preset target threshold, will increase the electric proportional valve of first electric and second simultaneously and open the degree, reach increase gas flow, dilute and discharge the purpose in the patient's abdominal cavity, avoid concentration too high to produce adverse effect to the patient.
In addition, for avoiding the atmospheric pressure unbalance in the patient abdominal cavity, lead to the accident, this application still provides a method of detecting and balanced patient intra-abdominal cavity atmospheric pressure, and when first pressure sensor detected that the pressure in the patient abdominal cavity is too big or too small, the flow of first electric proportional valve and second electric proportional valve will be controlled to the controller, discharges or puts into carbon dioxide gas in the patient abdominal cavity. Avoid damaging the patient's health because patient's intra-abdominal pressure is too big, perhaps because patient intra-abdominal pressure undersize, the abdominal cavity extrusion damages surgical equipment, influences medical personnel's field of vision.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic diagram of a partial structure of a carbon dioxide pneumoperitoneum machine according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of a carbon dioxide pneumoperitoneum machine according to an embodiment of the present disclosure;
FIG. 3 is a flow chart illustrating the steps of a method for controlling a gas in a carbon dioxide pneumoperitoneum device according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of a gas control method of a carbon dioxide pneumoperitoneum machine according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a gas control method of a carbon dioxide pneumoperitoneum machine according to an embodiment of the present disclosure;
FIG. 6 is a schematic structural diagram of a carbon dioxide pneumoperitoneum machine according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a carbon dioxide pneumoperitoneum machine provided in an embodiment of the present application.
Icon: 10-carbon dioxide pneumoperitoneum machine; 1001-controller; 1002-a target cavity; 1003-first electric proportional valve; 1004 — a first air pressure sensor; 1005-a carbon monoxide sensor; 1006-a second electric proportional valve; 1007-an air pump; 1008-solenoid valves; 1009 — a second barometric pressure sensor; 1010-external gas source; 1011-a pressure reducing assembly; 1012-temperature control component; 1013-a filter assembly; 1014-an exhaust port; 1015-display components; 1016-an operating component; 601-an obtaining module; 602-a control module; 603-a processing module; 10011-a processor; 10012-memory.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present application, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which the present invention product is usually put into use, it is only for convenience of describing the present application and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present application may be combined with each other without conflict.
In the current minimally invasive surgery based on the laparoscope, the pneumoperitoneum machine is one of indispensable medical devices. The pneumoperitoneum machine generally fills the abdominal cavity of a patient with carbon dioxide gas to form an artificial pneumoperitoneum space, so that the external air pressure in the abdominal cavity of the patient is kept balanced, and the operation space of medical personnel is ensured. However, the electrocoagulation device used in the current minimally invasive surgery can generate carbon monoxide when cutting human tissues, and the excessive carbon monoxide is gathered in the abdominal cavity and fused with hemoglobin in the abdominal cavity, so that the physical health of a patient can be threatened.
Based on the above, the applicant provides a gas control method of a carbon dioxide pneumoperitoneum machine and the carbon dioxide pneumoperitoneum machine, wherein a carbon monoxide sensor is arranged in the carbon dioxide pneumoperitoneum machine, so that the concentration value of carbon monoxide in the abdominal cavity of a patient can be acquired in real time, and a controller can timely discharge the carbon monoxide when the concentration of the carbon monoxide is too high, so that adverse effects on the patient caused by the too high concentration are avoided. Simultaneously, increased foretell detection and discharge carbon monoxide's function by carbon dioxide pneumoperitoneum machine in the function of supporting original balanced patient intra-abdominal cavity atmospheric pressure is balanced in this application, need not to increase extra equipment promptly and can realize the detection and the discharge of patient intra-abdominal cavity carbon monoxide to the cost has been saved and the ease for use has been promoted.
The carbon monoxide sensor monitors the concentration value of carbon monoxide in the abdominal cavity of the patient in real time, and adverse effects on the patient caused by overhigh concentration are avoided. And can discharge carbon monoxide in time when the concentration of the carbon monoxide is too high. Simultaneously, this application still provides a method of detecting and balanced patient's intra-abdominal cavity atmospheric pressure, avoids leading to patient's health damage or influence medical personnel operation field of vision because patient intra-abdominal cavity atmospheric pressure is out of balance.
The following explains a gas control method of a carbon dioxide pneumoperitoneum machine and a carbon dioxide pneumoperitoneum machine provided in the embodiments of the present application with reference to a plurality of specific application examples.
The present application provides a gas control method of a carbon dioxide pneumoperitoneum machine and a carbon dioxide pneumoperitoneum machine, wherein a structural schematic diagram of the carbon dioxide pneumoperitoneum machine 10 is shown in fig. 1, and the carbon dioxide pneumoperitoneum machine comprises: the system comprises a controller 1001, and a first air pressure sensor 1004, a carbon monoxide sensor 1005, a first electric proportional valve 1003 and a second electric proportional valve 1006 which are electrically connected with the controller 1001 respectively.
As shown in fig. 1, carbon dioxide is input as a gas path to the target chamber 1002 via a first electrically proportional valve 1003 in communication with the target chamber 1002. The first gas pressure sensor 1004 is located inside the target cavity 1002 or the target cavity 1002 is in communication to detect the gas pressure inside the target cavity 1002 in real time. The carbon monoxide sensor 1005 and the second electric proportional valve 1006 are located at the gas outlet end of the target cavity 1002 and are communicated with each other.
The above electrical connection can be interpreted as: the first air pressure sensor 1004, the carbon monoxide sensor 1005, the first electric proportional valve 1003 and the second electric proportional valve 1006 are electrically connected to the controller 1001, that is, the controller receives the measurement results of the first air pressure sensor 1004 and the carbon monoxide sensor 1005 through an electric circuit, and controls the opening and closing degree of the two electric proportional valves through the current values loaded on the first electric proportional valve 1003 and the second electric proportional valve 1006. The above communication differs from electrical connections in that the entire gas path is closed except for the input and output ends, and the communication indicates the flow direction of gas between these closed communication means. The first electric proportional valve 1003, the target cavity 1002, the first air pressure sensor 1004, the carbon monoxide sensor 1005 and the second electric proportional valve 1006 are sequentially communicated to form an air path of the carbon dioxide pneumoperitoneum machine 10, that is, a direction indicated by an arrow in fig. 1 is a direction in which gas in the carbon dioxide pneumoperitoneum machine 10 flows.
As an alternative embodiment, referring to fig. 2, on the basis of fig. 1, the carbon dioxide pneumoperitoneum apparatus 10 further includes: the air pump 1007 is located inside the target chamber 1002 or is communicated with the target chamber 1002, is electrically connected with the controller 1001, and is communicated with the carbon monoxide sensor 1005.
With continued reference to fig. 2, the carbon dioxide pneumoperitoneum device 10 further comprises: a solenoid valve 1008. Solenoid valve 1008 is an electromagnetically controlled device that can be used to control the flow of fluid. Since the solenoid valve 1008 is a safety device, and the opening and closing of the solenoid valve 1008 are controlled by the controller 1001, so as to further control the opening and closing of the first electric proportional valve 1003, the position of the solenoid valve 1008 on the gas path may be before the first electric proportional valve 1003. When the solenoid valve 1008 is open, carbon dioxide may pass through the solenoid valve 1008.
As an alternative embodiment, referring to fig. 2, the above-mentioned carbon dioxide pneumoperitoneum device 10 further includes: a second air pressure sensor 1009 electrically connected to the controller 1001, and an air path formed by an external air source 1010, a pressure reducing assembly 1011, the second air pressure sensor 1009, a temperature control assembly 1012, and a filter assembly 1013 sequentially connected to each other. The gas path is located at the front end of the solenoid valve 1008 and is used as an input gas path part for pretreating carbon dioxide gas.
Referring to fig. 2, the above-described carbon dioxide pneumoperitoneum device 10 further includes: and an exhaust port 1014 communicated with the outlet end of the second electro-proportional valve 1006 for exhausting the gas in the target cavity 1002.
With continued reference to fig. 2, the carbon dioxide pneumoperitoneum device 10 further comprises: the display module 1015 and the operation module 1016 are electrically connected to the controller 1001, and are located outside the target cavity 1002 and near the medical staff for the medical staff to observe and operate.
Alternatively, the display component may be, for example, a display for displaying the gas pressure value in the target cavity measured by the first gas pressure sensor, the carbon monoxide concentration value in the target cavity measured by the carbon monoxide sensor, and the opening degree and gas flow information of the first and second electric proportional valves on a screen of the display. The operation component can be a component such as a keyboard, a mouse and the like, and is used for setting the opening degree of the first electric proportional valve and the second electric proportional valve, the target concentration threshold of carbon monoxide, the first preset threshold and the second preset threshold of the target cavity through information displayed by the display component, and issuing a shutdown instruction when abnormality occurs.
When the carbon dioxide pneumoperitoneum machine 10 operates, the gas control method of the carbon dioxide pneumoperitoneum machine provided by the application is executed, and the working process during specific application is as follows:
when the carbon dioxide pneumoperitoneum machine 10 starts to work, the controller 1001 controls the electromagnetic valve 1008 to be opened, and simultaneously the controller 1001 controls the first electric proportional valve 1003 to be opened. Meanwhile, an external gas source 1010 is opened to output carbon dioxide gas into the gas path.
After the pressure of the carbon dioxide gas in the gas path is reduced by the pressure reducing assembly 1011, the second pressure sensor 1009 detects whether the pressure value of the reduced carbon dioxide gas is within the working pressure range, and if the carbon dioxide gas is not within the working pressure range, the controller 1001 immediately closes the electromagnetic valve 1008 after receiving the warning signal, thereby controlling the first electric proportional valve 1003 to close. If the pressure value of the carbon dioxide gas after being decompressed is in the working pressure interval, the carbon dioxide gas after being decompressed passes through the temperature control assembly 1012 and the filtering assembly 1013 in sequence, is used for heating the carbon dioxide gas to the temperature of the target cavity 1002 and filtering impurities, and is input into the target cavity 1002 through the first electric proportional valve 1003.
The first gas pressure sensor 1004 will detect whether the gas in the target cavity 1002 is greater than or equal to a first preset threshold, or less than or equal to a second preset threshold. If the gas in the target chamber 1002 is greater than or equal to the first preset threshold, the controller 1001 increases the opening degree of the second electro-proportional valve 1006, increasing the gas exhaust flow rate, and decreases the opening degree of the first electro-proportional valve 1003, decreasing the gas inflow flow rate. On the contrary, if the gas in the target chamber 1002 is less than or equal to the second preset threshold, the controller 1001 decreases the opening degree of the second electro-proportional valve 1006 to decrease the gas exhaust flow rate, and increases the opening degree of the first electro-proportional valve 1003 to increase the gas inflow flow rate. In an extreme case, if the carbon dioxide pneumoperitoneum machine fails, the air pressure is abnormally increased and exceeds a third preset threshold, the controller 1001 closes the electromagnetic valve 1008, further closes the first electric proportional valve 1003, and simultaneously opens the second electric proportional valve 1006 to the maximum flow rate, so as to discharge the gas in the target cavity from the exhaust port 1014.
The carbon monoxide sensor 1005 detects the concentration of carbon monoxide in the target chamber 1002 pumped by the air pump 1007, and transmits the detection result to the controller 1001. The controller 1001 determines whether or not the carbon monoxide concentration detection result is greater than or equal to the target concentration threshold value, and if so, the controller 1001 increases the opening degrees of the first electric proportional valve 1003 and the second electric proportional valve 1006 at the same time, increases the gas flow rate, and discharges the gas from the gas discharge port 1014.
In addition, the carbon dioxide pneumoperitoneum machine 10 proposed by the present application further comprises a display assembly 1015 and an operation assembly 1016. The display component 1015 is used for displaying the gas pressure value in the target cavity 1002 measured by the first gas pressure sensor 1004, the carbon monoxide concentration value in the target cavity 1002 measured by the carbon monoxide sensor 1005, and the opening degree and the gas flow information of the first electric proportional valve 1003 and the second electric proportional valve 1006 on a screen. The operation component 1016 is used for setting the opening degree of the first electric proportional valve 1003 and the second electric proportional valve 1006, the target concentration threshold of carbon monoxide, the first preset threshold and the second preset threshold of the target cavity through the information displayed by the display component 1015, and issuing a shutdown instruction when an abnormality occurs.
The carbon dioxide pneumoperitoneum machine that adopts in this embodiment can detect the concentration of the carbon monoxide in the patient abdominal cavity through carbon monoxide sensor, and the controller can also control the degree of opening of first electric proportional valve and second electric proportional valve according to carbon monoxide concentration value, dilutes and discharges the carbon monoxide in the patient abdominal cavity, ensures patient's safety. In addition, carbon dioxide pneumoperitoneum machine in this application still controls the degree of opening of first electric proportional valve and second electric proportional valve through the controller, makes when discharge carbon monoxide, maintains the dynamic balance of patient's intra-abdominal gas pressure, avoids atmospheric pressure unbalance to lead to the accident.
In addition to the above embodiments, the present embodiment provides a gas control method applied to the controller of the carbon dioxide pneumoperitoneum apparatus, wherein the carbon dioxide pneumoperitoneum apparatus includes: the controller to and respectively with the first atmospheric pressure sensor of controller electricity connection, carbon monoxide sensor, first electric proportional valve and the electric proportional valve of second, carbon monoxide sensor and the electric proportional valve intercommunication of second, the electric proportional valve of second and the gas vent intercommunication of carbon dioxide pneumoperitoneum machine. Wherein the functions of the components of the capnography apparatus are the same as explained in the previous embodiment.
Fig. 3 is a schematic flowchart illustrating steps of a gas control method of a carbon dioxide pneumoperitoneum machine according to an embodiment of the present application, where an execution subject of the method may be a controller of the carbon dioxide pneumoperitoneum machine in the foregoing embodiment, as shown in fig. 3, the method includes:
step S101, a first air pressure of the target cavity acquired by the first air pressure sensor is acquired.
Optionally, the target cavity described herein may refer to a cavity applied to a carbon dioxide pneumoperitoneum machine. For example, it may be the abdominal cavity of a patient.
Optionally, the first air pressure sensor may be a low pressure sensor for acquiring in real time an air pressure value in the target cavity of the patient, i.e. the first air pressure.
When the carbon dioxide pneumoperitoneum machine is used, the first air pressure sensor can be arranged in the target cavity, and therefore the first air pressure sensor can detect the air pressure value in the target cavity in real time.
The first air pressure sensor is electrically connected with the controller, and based on the electric connection, the first air pressure sensor sends the detected pressure value to the controller in real time.
Step S102, controlling the gas flow of the first electric proportional valve and the gas flow of the second electric proportional valve according to the first air pressure of the target cavity.
And the controller is used as the feedback of the gas flow regulation of the first electric proportional valve and the second electric proportional valve after receiving the first gas pressure value acquired by the first gas pressure sensor. The specific adjustment process will be described in detail in the following examples.
And step S103, acquiring the carbon monoxide concentration of the target cavity detected by the carbon monoxide sensor.
Optionally, a carbon monoxide sensor is arranged at the front end of the second electric proportional valve on the gas path, and is used for acquiring the carbon monoxide concentration of the gas exhausted from the target cavity in real time, namely the carbon monoxide concentration of the gas in the target cavity. This carbon monoxide sensor can directly place in the target cavity, detects the carbon monoxide concentration in the target cavity, also can be by communicating with the target cavity, be located the outside air exhaust device of target cavity and take the back out with the gas in the target cavity, detect exhaust gas's carbon monoxide concentration by the carbon monoxide sensor. The application provides the latter mode, and the space that carbon monoxide pneumoperitoneum machine occupied in the target cavity can be reduced as far as to this kind of external mode of carbon monoxide sensor, can also guarantee the relatively steady flow of waiting to detect, and unstable air current causes carbon monoxide sensor failure in avoiding the target cavity.
Optionally, as with the first barometric pressure sensor described above, the carbon monoxide sensor is also electrically connected to the controller, and based on this, the controller may receive the carbon monoxide concentration value collected by the carbon monoxide sensor.
And step S104, controlling the gas flow of the first electric proportional valve and the gas flow of the second electric proportional valve according to the carbon monoxide concentration of the target cavity.
Steps S101 to S102 and steps S103 to S104 may be executed concurrently, and the sequential execution order is not limited in the present application.
The controller adjusts the gas flow of the first electric proportional valve and the gas flow of the second electric proportional valve based on the received carbon monoxide concentration value, and dilutes and exhausts the carbon monoxide in the target cavity of the patient. The controller controls the opening degree of the two electric proportional valves jointly through the current values loaded on the first electric proportional valve and the second electric proportional valve and the air pressure difference value on the two sides of the first electric proportional valve and the second electric proportional valve.
In this embodiment, the gas flow of first electric proportional valve and the gas flow of second electric proportional valve are controlled through the controller, avoid because too big damage patient's health of patient's intra-abdominal pressure, perhaps because patient intra-abdominal pressure undersize, the abdominal cavity extrusion damages surgical equipment, influences medical personnel's field of vision. In addition, the carbon dioxide pneumoperitoneum machine in the embodiment supports the original function of balancing the air pressure in the abdominal cavity of the patient, and simultaneously increases the functions of detecting and discharging carbon monoxide, namely, the carbon monoxide in the abdominal cavity of the patient can be detected and discharged without adding extra equipment, so that the cost is saved, the usability is improved, and the adverse effect on the health of the patient caused by the overhigh concentration of the carbon monoxide remained in the abdominal cavity is avoided.
Alternatively, in the above embodiment, the gas flow of the first electric proportional valve and the gas flow of the second electric proportional valve are controlled according to the first gas pressure of the target cavity in step S102, which may be implemented by the following determination process.
If the first air pressure is greater than or equal to a first preset threshold value, the gas flow of the first electric proportional valve is adjusted to a first flow, and the gas flow of the second electric proportional valve is adjusted to a second flow, wherein the second flow is greater than the first flow.
And if the first air pressure is less than or equal to a second preset threshold value, adjusting the air flow of the first electric proportional valve to a third flow, and adjusting the air flow of the second electric proportional valve to a fourth flow, wherein the third flow is greater than the fourth flow.
The first preset threshold is larger than the second preset threshold.
Optionally, the first air pressure is an air pressure value in the target cavity acquired by the first air pressure sensor in real time.
The first preset threshold is a high pressure critical value in the target cavity, and the air pressure in the target cavity is higher than the high pressure critical value, so that the target cavity is damaged due to excessive pressure. At the moment, the controller controls the first electric proportional valve to reduce to the first flow rate, and the second electric proportional valve to increase to the second flow rate, so that the amount of the carbon dioxide gas in the target cavity is reduced. The first flow rate and the second flow rate are not fixed, but the first flow rate is always smaller than the second flow rate, so that the aim of reducing the amount of carbon dioxide gas in the target pneumoperitoneum is fulfilled.
The second preset threshold is a low pressure critical value in the target cavity, the air pressure in the target cavity is lower than the value, the operation space in the target cavity is too small, the operation of medical care personnel is affected, meanwhile, the tissue of the target cavity extrudes and damages surgical instruments, and the surgical instruments may damage patients. At the moment, the controller controls the first electric proportional valve to increase to a third flow rate, and the second electric proportional valve to decrease to a fourth flow rate, so that the carbon dioxide gas is filled into the target cavity. The third flow and the fourth flow are not fixed, but the fourth flow is always smaller than the third flow, so that the purpose of establishing pneumoperitoneum is achieved.
Generally, the pressure value of the abdominal cavity of an adult ranges from 12 mmHg to 14mmHg, and that of a child ranges from 8 mmHg to 10 mmHg.
In the embodiment, the controller adjusts the dynamic balance of the target cavity by adjusting the gas flow of the first electric proportional valve and the second electric proportional valve, so as to prevent accidents caused by too large or too small air pressure in the target cavity.
Optionally, in the above embodiment, the step S103 of acquiring the carbon monoxide concentration of the target cavity detected by the carbon monoxide sensor may be implemented by steps S201 to S202, as shown in fig. 4.
Step S201, controlling the air pump to pump the air in the target cavity, so that the carbon monoxide sensor collects the air in the target cavity from the air pump and detects the carbon monoxide concentration in the target cavity.
Step S202, receiving the carbon monoxide concentration of the target cavity detected by the carbon monoxide sensor.
The air pump is arranged on the air path, one end of the air pump is connected with the target cavity, and the other end of the air pump is connected with the carbon monoxide sensor. The controller controls the flow of the air pump for pumping out the air in the target cavity, and the carbon monoxide sensor detects the carbon monoxide concentration of the pumped-out air and transmits the detection result to the controller.
Alternatively, when the carbon monoxide sensor measures the carbon monoxide concentration of the exhaust gas in the target cavity in real time, the gas in the target cavity may be pumped out by using a gas pump, and the gas pump is electrically connected with the controller and is communicated with the carbon monoxide sensor.
In this embodiment, the carbon monoxide sensor detects the carbon monoxide concentration of the gas pumped out from the target cavity, so that the accuracy of the measurement result is ensured, and the carbon monoxide sensor is prevented from being placed in the target cavity to occupy the operation space.
Alternatively, the above embodiment may be implemented by controlling the gas flow of the first electric proportional valve and the gas flow of the second electric proportional valve according to the carbon monoxide concentration of the target cavity in step S104, as shown in fig. 5, in steps S301 to S302.
Step S301, judging that the concentration of the carbon monoxide in the target cavity is greater than or equal to a target concentration threshold value.
Optionally, the controller will determine whether the carbon monoxide concentration value collected by the carbon monoxide sensor is greater than a target concentration threshold. Wherein the target concentration threshold value can be manually set by medical staff. Generally, the concentration of carbon monoxide is 50ppm, which is the maximum concentration allowed by adults to put in the environment, and the adult is in the environment with the concentration of carbon monoxide exceeding the maximum concentration for more than 1 hour, so that obvious toxic reactions such as headache, nausea and the like can be caused.
Step S302, if yes, adjusting the gas flow rate of the first electric proportional valve and the gas flow rate of the second electric proportional valve to the target flow rates corresponding to the target concentration thresholds, respectively.
The target concentration threshold comprises at least one concentration threshold, and each concentration threshold corresponds to one target flow.
The controller adjusts the opening degree of the first electric proportional valve and the second electric proportional valve according to the comparison result of the concentration of the carbon monoxide in the target cavity and the target concentration threshold value, so that the gas flow of the two electric proportional valves is adjusted. Specifically, if the concentration of carbon monoxide in the target cavity is higher than the target concentration threshold value, the opening degree of the first electric proportional valve and the second electric proportional valve is increased simultaneously, and the gas flow of the first electric proportional valve and the second electric proportional valve is increased, so that the carbon monoxide in the target cavity is diluted and discharged.
Alternatively, the correspondence between the concentration threshold and the target flow rate may be established in advance through experiments or the like. For example, it is determined through experiments that when the concentration of carbon monoxide reaches a, if the gas flow rate of the first electric proportional valve is adjusted to B and the gas flow rate of the second electric proportional valve is adjusted to C, the concentration of carbon monoxide in the chamber can be rapidly reduced to a normal range, and therefore, a corresponding relationship between the concentration threshold a and the gas flow rates of the first electric proportional valve B and the second electric proportional valve C can be established. Correspondingly, in this embodiment, when it is determined that the concentration of carbon monoxide in the target chamber is greater than or equal to the concentration threshold a, the gas flow rate of the first electric proportional valve may be directly modulated to B, and the gas flow rate of the second electric proportional valve may be adjusted to C.
In the embodiment, the carbon monoxide sensor is used for measuring the carbon monoxide concentration of the gas discharged from the target cavity in real time, and the gas flow of the first electric proportional valve and the gas flow of the second electric proportional valve are controlled according to the carbon monoxide concentration, so that the carbon monoxide gas is discharged in time, the condition that the carbon monoxide concentration of the patient is relatively safe all the time during the operation can be ensured, and the threat of external factors such as surgical instruments and the like to the physical health of the patient is avoided. In addition, different carbon monoxide concentration threshold values are set in the embodiment to correspond to different target flow rates, and under different concentration threshold values, the first electric proportional valve and the second electric proportional valve can be directly adjusted to the corresponding gas flow rates, so that unnecessary high gas flow rates can be avoided while carbon monoxide gas in the target cavity is efficiently diluted and discharged, and the energy consumption of the carbon dioxide pneumoperitoneum machine is reduced.
As previously described, the capnograph may further include a solenoid valve electrically connected to the controller, the solenoid valve in communication with the first electrically proportional valve. On this basis, the carbon dioxide pneumoperitoneum control method in this embodiment further includes:
if the first air pressure is larger than or equal to a third preset threshold value, the electromagnetic valve and the first electric proportional valve are closed, and the air flow of the second electric proportional valve is adjusted to the maximum air flow of the second electric proportional valve.
The third predetermined threshold value indicates a pressure value when the pressure value in the target cavity of the patient is abnormally increased to a pressure value at which damage to the patient may occur, and therefore, as an alternative embodiment, the third predetermined threshold value is greater than the first predetermined threshold value and the second predetermined threshold value.
Optionally, the carbon dioxide pneumoperitoneum machine that this application provided still includes the safety device solenoid valve, and the solenoid valve is used for opening or closing first electric proportional valve, and the degree of opening of first electric proportional valve is controlled to the controller. When the first air pressure sensor detects that the air pressure in the target cavity of the patient is abnormally increased and exceeds a third preset threshold value, the controller closes the control electromagnetic valve, then closes the first electric proportional valve, closes the air inlet circuit, and simultaneously opens the second electric proportional valve to the maximum flow, so that the gas in the target cavity is rapidly discharged, and the safety of the patient is ensured.
As previously mentioned, the present application provides a carbon dioxide pneumoperitoneum device further comprising: a second air pressure sensor electrically connected to the controller. On the basis of the second pressure sensor, the method for controlling a carbon dioxide pneumoperitoneum machine in this embodiment further includes:
and acquiring a second air pressure of the input air collected by the second air pressure sensor, and closing the electromagnetic valve if the second air pressure is not the air pressure in the working air pressure interval.
Optionally, the second air pressure sensor may be a high pressure sensor, and is configured to detect whether a second air pressure value of the gas in the air path before being input into the target cavity is too high, which is dangerous.
If the second air pressure value is not in the working air pressure interval, and high pressure risk exists, the controller controls the electromagnetic valve of the safety device to be closed, and air pressure with an overhigh air pressure value is prevented from entering a target cavity of a patient.
In this embodiment, the solenoid valve is as safety device, and the atmospheric pressure takes place unusually at the inside atmospheric pressure of patient's target cavity, perhaps when atmospheric pressure is unusual before carbon dioxide gas inputs target cavity, all will in time close, avoids the gaseous damage that causes patient's health of atmospheric pressure value too big, guarantees patient's life safety.
As previously mentioned, the carbon dioxide pneumoperitoneum apparatus provided herein further comprises: pressure reduction subassembly, accuse temperature subassembly and filtering component.
The pressure reducing assembly is communicated with an external air source, the pressure reducing assembly is communicated with a second air pressure sensor, the second air pressure sensor is communicated with a temperature control assembly, the temperature control assembly is communicated with the filtering assembly, and the filtering assembly is communicated with the electromagnetic valve.
The above-mentioned second atmospheric pressure of obtaining the input gas by second atmospheric pressure sensor collection includes:
after the carbon dioxide pneumoperitoneum machine is started, the input gas from the external gas source is decompressed by the decompression assembly, the decompressed gas is input into the second pressure sensor, the second pressure of the decompressed gas is detected by the second pressure sensor, and the second pressure is sent to the controller.
Then, the second air pressure sensor transmits the decompressed gas to the temperature control assembly, the temperature of the decompressed gas is adjusted to the target temperature by the temperature control assembly, the gas with the target temperature is transmitted to the filtering assembly, the filtering assembly filters the gas with the target temperature, and the filtered gas is transmitted to the electromagnetic valve.
Optionally, the carbon dioxide pneumoperitoneum machine that this application provided still includes decompression subassembly, accuse temperature subassembly and filtering component, and the decompression subassembly is arranged in the gas of the outside air supply of decompression, detects whether in the interval back of working gas pressure through second baroceptor, and the carbon dioxide gas after the decompression heats to the approximate temperature of target cavity through accuse temperature subassembly in proper order, filters steam and impurity in the carbon dioxide gas through filtering component again.
Alternatively, the external gas source can be a carbon dioxide cylinder, and can also be a centralized gas supply device of a hospital.
In this embodiment, decompression subassembly, accuse temperature subassembly and filtering component guarantee that the gas of input is pure to the carbon dioxide preliminary treatment before importing the target cavity, and then guarantee patient's safety.
An embodiment of the present application further provides a gas control device of a carbon dioxide pneumoperitoneum machine, as shown in fig. 6, the device includes:
the obtaining module 601 obtains a first air pressure of the target cavity collected by the first air pressure sensor.
The control module 602 controls a gas flow of the first electric proportional valve and a gas flow of the second electric proportional valve according to the first gas pressure of the target cavity.
The obtaining module 601 is further configured to obtain a carbon monoxide concentration of the target cavity detected by the carbon monoxide sensor.
And the processing module 603 is configured to obtain the carbon monoxide concentration of the target cavity detected by the carbon monoxide sensor.
The processing module 603 is specifically configured to, if the concentration of carbon monoxide in the target cavity is greater than or equal to the target concentration threshold, respectively adjust the gas flow of the first electrical proportional valve and the gas flow of the second electrical proportional valve to target flows corresponding to the target concentration thresholds.
The processing module 603 is further specifically configured to enable the target concentration threshold to include at least one concentration threshold, where each concentration threshold corresponds to one target flow rate.
The obtaining module 601 is further configured to control the air pump to pump the air in the target cavity, so that the carbon monoxide sensor collects the air in the target cavity from the air pump and detects the carbon monoxide concentration in the target cavity; and receiving the carbon monoxide concentration of the target cavity detected by the carbon monoxide sensor.
The control module 602 is further specifically configured to, if the first air pressure is greater than or equal to a first preset threshold, adjust the air flow of the first electric proportional valve to a first flow, and adjust the air flow of the second electric proportional valve to a second flow, where the second flow is greater than the first flow; if the first air pressure is smaller than or equal to a second preset threshold value, adjusting the air flow of the first electric proportional valve to a third flow, and adjusting the air flow of the second electric proportional valve to a fourth flow, wherein the third flow is larger than the fourth flow; the first preset threshold is larger than the second preset threshold.
The processing module 603 is further specifically configured to close the electromagnetic valve and the first electric proportional valve if the first air pressure is greater than or equal to a third preset threshold, and adjust the gas flow of the second electric proportional valve to the maximum gas flow of the second electric proportional valve.
The processing module 603 is further specifically configured to obtain a second air pressure of the input gas collected by the second air pressure sensor; and if the second air pressure is not the air pressure in the working air pressure interval, closing the electromagnetic valve.
The processing module 603 is further configured to, after the carbon dioxide pneumoperitoneum machine is started, decompress the input gas from the external gas source by the decompression component, input the decompressed gas into the second pressure sensor, detect a second pressure of the decompressed gas by the second pressure sensor, and send the second pressure to the controller.
The processing module 603 is further specifically configured to transmit the decompressed gas to the temperature control assembly through the second air pressure sensor, adjust the temperature of the decompressed gas to a target temperature through the temperature control assembly, transmit the gas having the target temperature to the filtering assembly, filter the gas having the target temperature through the filtering assembly, and transmit the filtered gas to the solenoid valve.
As shown in fig. 7, which is a schematic structural diagram of the controller 1001, as shown in fig. 7, the controller 1001 includes: the processor 10011, the memory 10012, and a bus, wherein the memory 10012 stores machine-readable instructions executable by the processor 10011, and when the electronic device is operated, the processor 10011 communicates with the memory 10012 through the bus, and the processor 10011 executes the machine-readable instructions to perform the steps of the gas control method of the carbon dioxide pneumoperitoneum machine in the above-mentioned embodiments.
The memory 10012, the processor 10011, and the bus elements are electrically coupled to one another, directly or indirectly, to enable data transfer or interaction. For example, the components may be electrically connected to each other via one or more communication buses or signal lines. The gas control device of the carbon dioxide pneumoperitoneum apparatus includes at least one software function module which can be stored in the memory 10012 in the form of software or firmware (firmware) or solidified in an Operating System (OS) of the computer apparatus. The processor 10011 is configured to execute executable modules stored in the memory 10012, such as software functional modules and computer programs included in a gas control device of a carbon dioxide pneumoperitoneum machine.
The Memory 10012 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A gas control method of a carbon dioxide pneumoperitoneum machine, which is applied to a controller in the carbon dioxide pneumoperitoneum machine, wherein the carbon dioxide pneumoperitoneum machine comprises the following steps:
the controller, a first air pressure sensor, a carbon monoxide sensor, a first electric proportional valve and a second electric proportional valve are respectively and electrically connected with the controller, the carbon monoxide sensor is communicated with the second electric proportional valve, and the second electric proportional valve is communicated with an exhaust port of the carbon dioxide pneumoperitoneum machine;
the method comprises the following steps:
acquiring a first air pressure of a target cavity acquired by the first air pressure sensor;
controlling the gas flow of the first electric proportional valve and the gas flow of the second electric proportional valve according to the first gas pressure of the target cavity;
acquiring the carbon monoxide concentration of a target cavity detected by the carbon monoxide sensor;
and controlling the gas flow of the first electric proportional valve and the gas flow of the second electric proportional valve according to the carbon monoxide concentration of the target cavity.
2. The gas control method of a carbon dioxide pneumoperitoneum device according to claim 1, wherein said controlling the gas flow rate of the first electric proportional valve and the gas flow rate of the second electric proportional valve according to the carbon monoxide concentration of the target cavity comprises:
and if the concentration of the carbon monoxide in the target cavity is greater than or equal to a target concentration threshold, respectively adjusting the gas flow of the first electric proportional valve and the gas flow of the second electric proportional valve to target flows corresponding to the target concentration thresholds.
3. The gas control method of a carbon dioxide pneumoperitoneum machine according to claim 2, wherein said target concentration threshold comprises at least one concentration threshold, each concentration threshold corresponding to a respective target flow rate.
4. The gas control method of a carbon dioxide pneumoperitoneum machine according to claim 1, wherein said carbon dioxide pneumoperitoneum machine further comprises:
an air pump; the air pump is electrically connected with the controller and is communicated with the carbon monoxide sensor;
the acquiring of the carbon monoxide concentration of the target cavity detected by the carbon monoxide sensor comprises:
controlling the air pump to pump the gas in the target cavity, so that the carbon monoxide sensor collects the gas in the target cavity from the air pump and detects the carbon monoxide concentration in the target cavity;
receiving the carbon monoxide concentration of the target cavity detected by the carbon monoxide sensor.
5. The method of controlling a carbon dioxide pneumoperitoneum according to any one of claims 1-4, wherein said controlling a gas flow rate of said first electric proportional valve and a gas flow rate of said second electric proportional valve according to a first gas pressure of said target cavity comprises:
if the first air pressure is greater than or equal to a first preset threshold value, adjusting the gas flow of the first electric proportional valve to a first flow, and adjusting the gas flow of the second electric proportional valve to a second flow, wherein the second flow is greater than the first flow;
if the first air pressure is smaller than or equal to a second preset threshold value, adjusting the gas flow of the first electric proportional valve to a third flow, and adjusting the gas flow of the second electric proportional valve to a fourth flow, wherein the third flow is larger than the fourth flow;
wherein the first preset threshold is greater than the second preset threshold.
6. The gas control method of a carbon dioxide pneumoperitoneum machine according to claim 5, further comprising: the electromagnetic valve is electrically connected with the controller and is communicated with the first electric proportional valve;
the method further comprises the following steps:
if the first air pressure is larger than or equal to a third preset threshold value, the electromagnetic valve and the first electric proportional valve are closed, and the air flow of the second electric proportional valve is adjusted to the maximum air flow of the second electric proportional valve.
7. The gas control method of a carbon dioxide pneumoperitoneum machine according to claim 6, further comprising:
a second air pressure sensor electrically connected to the controller;
the method further comprises the following steps:
acquiring a second air pressure of the input air collected by a second air pressure sensor;
and if the second air pressure is not the air pressure in the working air pressure interval, closing the electromagnetic valve.
8. The gas control method of a carbon dioxide pneumoperitoneum machine according to claim 7, further comprising:
the device comprises a pressure reducing assembly, a temperature control assembly and a filtering assembly;
the pressure reducing assembly is communicated with an external air source, the pressure reducing assembly is communicated with the second air pressure sensor, the second air pressure sensor is communicated with the temperature control assembly, the temperature control assembly is communicated with the filtering assembly, and the filtering assembly is communicated with the electromagnetic valve;
the obtaining a second gas pressure of the input gas collected by the second gas pressure sensor includes:
after the carbon dioxide pneumoperitoneum machine is started, the pressure reducing assembly reduces the pressure of input gas from the external gas source, the reduced gas is input into the second pressure sensor, the second pressure sensor detects second pressure of the reduced gas, and the second pressure is sent to the controller.
9. The method of gas control for a carbon dioxide pneumoperitoneum machine in accordance with claim 8, further comprising:
and the second air pressure sensor transmits the decompressed gas to the temperature control assembly, the temperature control assembly adjusts the temperature of the decompressed gas to a target temperature, transmits the gas with the target temperature to the filtering assembly, and the filtering assembly filters the gas with the target temperature and transmits the filtered gas to the electromagnetic valve.
10. A carbon dioxide pneumoperitoneum machine, comprising:
the device comprises a controller, and a first air pressure sensor, a carbon monoxide sensor, a first electric proportional valve and a second electric proportional valve which are respectively electrically connected with the controller;
the controller performs the gas control method of the carbon dioxide pneumoperitoneum machine of any one of claims 1-9 when the carbon dioxide pneumoperitoneum machine is operating.
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