A portable pneumoperitoneum machine

Abstract

The utility model discloses a portable pneumoperitoneum machine, comprising a case, and a water storage tank, a reaction tank, an air inlet pipe and a sterile component arranged inside the case; the water storage tank is arranged on the upper part of the reaction tank, and raw water is stored inside the water storage tank; a water outlet pipe connected to the reaction tank is arranged at the bottom of the water storage tank; the reaction tank is filled with reactants that react with water to generate carbon dioxide gas; the air inlet end of the air inlet pipe is connected to the inner top of the reaction tank, and the air outlet end of the air inlet pipe passes through the water storage tank; the sterile component is arranged above the water storage tank, and the sterile component includes a sterile bag, and a pneumoperitoneum tube and a pneumoperitoneum needle arranged inside the sterile bag. The beneficial effects of the utility model are as follows: the pneumoperitoneum machine of the utility model has a built-in gas source and a sterile component, the gas production reaction is mild, the structure is simple but the safety is high, it can provide the pneumoperitoneum support required for surgery, it is suitable for emergency treatment in outdoor or battlefield environments without gas source support, and the flexibility of use of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a portable pneumoperitoneum machine. Background Art

[0002] The insufflator is an auxiliary device for minimally invasive abdominal surgery, which is used to establish pneumoperitoneum during surgery to improve the surgical field of view and expand the operating space. The insufflator currently used in the market does not have its own gas storage or gas production device, and must be connected to an external gas source such as a carbon dioxide cylinder. In some special scenarios, such as outdoors or on the battlefield, its applicability is limited. When the gas in the cylinder is exhausted or the external gas source is damaged, it does not have emergency response. Patent CN202221729428.6 proposes an insufflator with a built-in gas source, in which a mild gas generator is built into the insufflator as a gas source, which greatly improves its practicality. However, this traditional insufflator itself is relatively large in size and weight. Even if it has a built-in gas source, it is difficult to carry and transport it without the help of transportation and only by manpower. Its usage scenarios are still greatly restricted.

[0003] Therefore, it is necessary to improve the prior art. Summary of the invention

[0004] The utility model aims to provide a portable insufflator which is convenient to carry and has high flexibility in use, in view of the deficiencies in the prior art.

[0005] The technical solution adopted by the utility model is: a portable pneumoperitoneum machine, comprising a chassis, and a water storage tank, a reaction tank, an air inlet pipe and a sterile component arranged inside the chassis;

[0006] The water storage bin is arranged on the upper part of the reaction bin, and raw water is stored inside the water storage bin; a water outlet pipe connected to the reaction bin is arranged at the bottom of the water storage bin;

[0007] The reaction chamber is filled with reactants that react with water to generate carbon dioxide gas;

[0008] The air inlet end of the air inlet pipe is connected to the inner top of the reaction bin, and the air outlet end of the air inlet pipe passes through the water storage bin;

[0009] The sterile assembly is arranged above the water storage tank, and the sterile assembly includes a sterile bag, and a pneumoperitoneum tube and a pneumoperitoneum needle arranged inside the sterile bag; one end of the pneumoperitoneum tube can be connected to the outlet end of the air inlet pipe, and the other end of the pneumoperitoneum tube can be connected to the pneumoperitoneum needle;

[0010] A buffer gas bin is also provided inside the chassis, and the buffer gas bin is located on the top of the water storage bin, and the air outlet end of the air inlet pipe is connected to the interior of the buffer gas bin; an exhaust pipe is provided on the top of the buffer gas bin, and the outlet of the exhaust pipe can be connected to the inlet end of the pneumoperitoneum tube; a pressure control valve is provided at the outlet of the exhaust pipe, and the other end of the pressure control valve is connected to the pneumoperitoneum tube through a filter; an outlet pressure switch is provided at the inlet of the exhaust pipe.

[0011] According to the above scheme, an exhaust port is provided on the side of the buffer gas bin, and an exhaust pressure switch is provided at the exhaust port.

[0012] According to the above scheme, the raw materials in the reaction chamber include a carbonate compound and a weak acid separated by a partition, and the acidity of the weak acid is higher than that of the carbonic acid.

[0013] According to the above scheme, the carbonate compound is at least one of sodium carbonate and sodium bicarbonate, which is dried, dehydrated, pressed into blocks and placed on one side of the partition in the reaction chamber; the weak acid is one of citric acid, malic acid, boric acid, and tartaric acid, which is dried, dehydrated, pressed into blocks and placed on the other side of the partition in the reaction chamber.

[0014] According to the above solution, the sterile component also includes a filter, which is placed in a sterile bag and can be installed at the inlet end of the pneumoperitoneum tube.

[0015] According to the above scheme, the outlet end of the air intake pipe is provided with an air intake valve, which is connected to an air intake switch arranged on the outer wall of the chassis, and the air intake valve is opened or closed by the air intake switch.

[0016] According to the above scheme, a water outlet valve is arranged on the water outlet pipe, and the water outlet valve is connected to a water outlet switch arranged on the outer wall of the chassis.

[0017] According to the above scheme, an application chamber is provided on the top of the buffer gas chamber, the sterile component and the exhaust pipe are both located in the application chamber, and a protective cover is provided on the top of the application chamber.

[0018] According to the above solution, the casing of the pneumoperitoneum machine is cylindrical.

[0019] According to the above solution, a triangular bracket is arranged at the bottom of the chassis, and the triangular bracket includes foot nails whose upper ends are connected to the bottom of the chassis.

[0020] The beneficial effects of the utility model are:

[0021] 1. The pneumoperitoneum machine of the utility model has a built-in gas source and sterile components, a mild gas production reaction, a simple structure but high safety, and can provide the pneumoperitoneum support required for surgery. It is suitable for emergency treatment in outdoor or battlefield environments without gas source support, and improves the flexibility of the device.

[0022] 2. The utility model is designed with a dual pressure switch design, which can stably control the pressure and the overall safety of the device is high.

[0023] 3. When not in use, the sterile components of the utility model can be stored in the case, making it easy to transport and carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The figure is a schematic diagram of the appearance of a specific embodiment of the utility model.

[0025] Figure 2 Schematic diagram of the internal structure of this embodiment.

[0026] Figure 3 Schematic diagram of the working of this embodiment.

[0027] Among them: 1-application chamber; 11-protective cover; 12-pressure control valve; 13-air outlet pressure switch; 14-sterile bag; 141-filter; 142-innegative tube; 143-innegative needle; 2-buffer gas chamber; 21-exhaust pressure switch; 22-inlet valve; 23-inlet pipe; 24-inlet switch; 3-water storage chamber; 31-water outlet valve; 32-water outlet pipe; 33-water outlet switch; 34-raw water; 4-reaction chamber; 41-partition; 42-carbonic acid compound; 43-weak acid; 44-reaction mixture; 5-triangular bracket; 6-human abdominal cavity. DETAILED DESCRIPTION

[0028] In order to better understand the present invention, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] like Figures 1 to 3 A portable pneumoperitoneum machine shown includes a chassis, and a water storage chamber 3, a reaction chamber 4, an air inlet pipe 23 and a sterile component arranged inside the chassis;

[0030] The water storage bin 3 is disposed on the upper part of the reaction bin 4, and raw water 34 is stored inside the water storage bin 3; a water outlet pipe 32 connected to the reaction bin 4 is disposed at the bottom of the water storage bin 3;

[0031] The reaction chamber 4 is filled with reactants that react with water to generate carbon dioxide gas;

[0032] The air inlet end (i.e., the lower end) of the air inlet pipe 23 is connected to the inner top of the reaction bin 4, and the air outlet end (i.e., the upper end) of the air inlet pipe 23 passes through the water storage bin 3;

[0033] The sterile component is arranged above the water storage tank 3, and the sterile component includes a sterile bag 14, and a pneumoperitoneum tube 142 and a pneumoperitoneum needle 143 arranged inside the sterile bag 14; one end of the pneumoperitoneum tube 142 can be connected to the outlet end of the air inlet pipe 23, and the other end of the pneumoperitoneum tube 142 can be connected to the pneumoperitoneum needle 143.

[0034] When the utility model is not in use, the pneumoperitoneum needle 143 and the pneumoperitoneum tube 142 are both placed in the sterile bag 14 ; when in use, the pneumoperitoneum needle 143 and the pneumoperitoneum tube 142 are taken out from the sterile bag 14 , and the pneumoperitoneum tube 142 is connected to the pneumoperitoneum needle 143 and the air inlet tube 23 .

[0035] In the present invention, the outlet end of the air intake pipe 23 is provided with an air intake valve 22, which is connected to an air intake switch 24 provided on the outer wall of the chassis. The air intake switch 24 is used to open or close the air intake valve 22; when the air intake valve 22 is opened, the air intake pipe 23 is in a passage state.

[0036] In the present invention, the water outlet pipe 32 is a liquid pipeline connecting the water storage tank 3 and the reaction tank 4, and is used to transport the raw water 34 for the reaction to the reaction tank 4 to start the gas production reaction. The water outlet pipe 32 is provided with a water outlet valve 31, and the water outlet valve 31 is connected to a water outlet switch 33 provided on the outer wall of the chassis, and the water outlet valve 31 is opened or closed by the water outlet switch 33; when the water outlet valve 31 is opened, the water outlet pipe 32 is in a passage state.

[0037] In the present invention, the water storage tank 3 is used to store raw water 34 required for the gas production reaction, and the raw water 34 is treated sterile water.

[0038] Preferably, a buffer gas bin 2 is also provided inside the chassis, and the buffer gas bin 2 is located on the top of the water storage bin 3, and the air outlet end of the air inlet pipe 23 is connected to the interior of the buffer gas bin 2; an exhaust pipe is provided on the top of the buffer gas bin 2, and the outlet of the exhaust pipe can be connected to the inlet end of the pneumoperitoneum tube 142.

[0039] In the present invention, the air inlet pipe 23 is a gas pipeline connecting the reaction chamber 4 and the buffer gas chamber 2 , passes through the water storage chamber 3 , and is used to transport the gas generated by the reaction chamber 4 to the buffer gas chamber 2 .

[0040] Preferably, a pressure control valve 12 is provided at the outlet of the exhaust pipe, and the other end of the pressure control valve 12 is connected to the pneumoperitoneum tube 142 through a filter 141 to adjust the pressure of the output gas. The pressure control valve 12 should be a small-range high-precision type, with a range of less than 10 kPa and an error of less than ±2%.

[0041] Preferably, an outlet pressure switch 13 is provided at the inlet of the exhaust pipe. The outlet pressure switch 13 is located at the passage between the buffer gas chamber 22 and the application chamber 11. When the pressure is less than 5 kPa, the outlet pressure switch 13 is turned on and the exhaust pipe is in an open state; when the pressure is greater than 5 kPa, the outlet pressure switch 13 is automatically closed. The outlet pressure switch 13 is used to prevent high-pressure gas exceeding the limit from entering the pressure control valve 12, so as to avoid harm to the patient in the event of a failure of the pressure control valve 12.

[0042] Preferably, the side of the buffer gas bin 2 is provided with an exhaust port, and the exhaust port is provided with an exhaust pressure switch 21. When the pressure in the buffer gas bin 2 is less than 5kPa, the exhaust pressure switch 21 is closed and the exhaust port is in a closed state; when the pressure is greater than 5kPa, the exhaust pressure switch 21 is automatically opened, and the exhaust port discharges the gas in the buffer gas bin 2 to the outside of the device. The function of the exhaust pressure switch 21 is to control the pressure of the gas in the buffer gas bin 2 and ensure the safety of the gas source.

[0043] In the present invention, the buffer gas chamber 2 is used to store the reaction gas and adjust the gas source pressure (which can be adjusted by the exhaust pressure switch 21). The carbon dioxide gas generated by the reaction chamber 4 is transported to the buffer gas chamber 2 through the air inlet pipe 23, and then enters the pneumoperitoneum tube 142 through the exhaust pipe on the top of the buffer gas chamber 2. The exhaust pipe is equipped with a pressure control valve 12.

[0044] In the utility model, an application bin 1 is provided on the top of the buffer gas bin 2, the aseptic components and the exhaust pipe are both located in the application bin 1, and a protective cover 11 is provided on the top of the application bin 1.

[0045] Preferably, the raw materials in the reaction chamber 4 include a carbonate compound 42 and a weak acid 43 separated by a partition 41, wherein the carbonate compound 42 is at least one of sodium carbonate and sodium bicarbonate, which is dried, dehydrated, pressed into blocks and placed on one side of the partition 41 in the reaction chamber 4; the weak acid 43 has a higher acidity than carbonic acid, and the weak acid 43 is at least one of citric acid, malic acid, boric acid, and tartaric acid, which is dried, dehydrated, pressed into blocks and placed on the other side of the partition 41 in the reaction chamber 4.

[0046] In the present invention, the reaction chamber 4 is located at the bottom of the chassis, and is used to store reactants and provide a space for gas production reaction, and output the gas required for surgery. The partition 41 divides the lower part of the reaction chamber 4 into two positions, respectively placing a carbonate compound 42 and a weak acid 43.

[0047] Preferably, the sterile component further includes a filter 141 , which is placed in the sterile bag 14 . The filter 141 can be installed at the inlet end of the pneumoperitoneum tube 142 .

[0048] In the present invention, the sterile bag 14 can be a paper sterilization bag, a blister sterilization bag or a paper-plastic sterilization bag, and its sterility guarantee period should be more than 12 months. Preferably, the sterile bag 14 can be a Tyvek paper-plastic sterilization bag.

[0049] In the utility model, the chassis of the pneumoperitoneum machine is cylindrical in shape, and the chassis is made of high-strength plastic. The structure is arranged in sequence from top to bottom: a protective cover 11, an application chamber 1, a buffer gas chamber 2, a water storage chamber 3 and a reaction chamber 4; the protective cover 11 is a circular upper cover, which is connected to the top of the chassis of the pneumoperitoneum machine by snap fastening or threading, and is used to protect the pressure control valve 12 and the sterile components in the application chamber 1; a triangular bracket 5 is provided at the bottom of the chassis, and the triangular bracket 5 includes 3 foot nails whose inclined upper ends are connected to the bottom of the chassis, which are used to fix the pneumoperitoneum machine and are convenient for use in different scenarios.

[0050] The shape of the chassis of the pneumoperitoneum machine in the utility model can also be a rectangular parallelepiped or other shapes suitable for transportation and carrying; the positions of the various compartments inside the chassis can also be adaptively adjusted; the water storage compartment 3 structure can be removed, and a water injection port can be installed on the side wall of the reaction compartment 4 instead, so that clean water can be injected from the outside when in use.

[0051] The working principle of the utility model is:

[0052] First, place the pneumoperitoneum machine on the ground and fix or firmly place it with a tripod bracket 5; then, use the water outlet switch 33 to open the water outlet valve 31, so that the raw water 34 in the water storage tank 3 enters the reaction tank 4 through the water outlet pipe 32; after the raw water 34 enters the reaction tank 4, the solid carbonate compound 42 and the weak acid 43 gradually dissolve in the water to form a reaction mixture 4444; since the acidity of the weak acid 43 is stronger than that of carbonic acid, it will undergo a double decomposition reaction with the carbonate compound 42 to produce a large amount of carbon dioxide; then, use the air inlet switch 24 to open the air inlet valve 22, so that the carbon dioxide generated in the reaction tank 4 enters the buffer gas tank 2 through the air inlet pipe 23; then, open the sterile bag 14, take out the filter 141, the pneumoperitoneum tube 142 and the pneumoperitoneum needle 143 and connect them, connect the filter 141 to the outlet end of the pressure control valve 12, adjust the pressure control valve 12 so that the outlet pressure reaches the set value, and finally insert the pneumoperitoneum needle 143 into the human body to input the generated carbon dioxide gas into the human abdominal cavity 6 to gradually establish pneumoperitoneum.

[0053] The reaction between the carbonate compound 42 and the weak acid 43 is mild and reversible. When the pressure in the buffer gas chamber 2 is too high, the generated carbon dioxide will no longer precipitate, but will dissolve in the water, causing the reaction to gradually slow down and reduce the gas production, thus avoiding further increase in pressure. If the pressure in the chamber is still higher than 5kPa at this time, the outlet pressure switch 13 is closed and the exhaust pressure switch 21 is opened to discharge the excess gas from the buffer gas chamber 2 until the pressure in the chamber is less than 5kPa. Through the joint action of the dual pressure switch and the pressure control valve 12, even if one of the components fails, the high-pressure gas cannot directly enter the human body, thereby ensuring the safety of the patient.

[0054] After use, if there is no recovery condition, the whole set of equipment is completely discarded and no longer reused. If there is recovery condition, it can be cleaned and sterilized after recovery, and raw materials and sterile bag 14 are replaced for next use to reduce costs.

[0055] Example

[0056] The chassis of the pneumoperitoneum machine is made of glass fiber-doped polycarbonate as the main material. The outer diameter of the chassis is 108mm, the inner diameter is 100mm, the overall height is 420mm, and the chassis wall thickness is 4mm; the length of the triangular bracket is 50mm; the height of the application chamber 1 is 100mm, the height of the buffer gas chamber 2 is 50mm, the height of the water storage chamber 3 is 100mm, the height of the reaction chamber 4 is 150mm, and the height of the partition 41 is 120mm.

[0057] A pressure control valve 12 with a range of 0 to 10Kpa and an accuracy of ±2%FS is used and installed in the application bin 1. Two pressure switches with an accuracy of ±1%FS are used, one of which is installed in the passage between the top of the buffer gas bin 2 and the application bin 1, and is set to be in an open state when the pressure is less than 5kPa and closed when the pressure exceeds 5kPa, as an outlet pressure switch 13; the other is installed on the side wall of the buffer gas bin 2 and in the passage to the external environment, and is set to be in a closed state when the pressure is less than 5kPa and open when the pressure exceeds 5kPa, as an exhaust pressure switch 21. Install the air inlet pipe 23, the air inlet valve 22 and the air inlet switch 24, and put them in an initial closed state; install the water outlet pipe 32, the water outlet valve 31 and the water outlet switch 33, and put them in an initial closed state.

[0058] 500 ml of sterilized pure water is injected into the water storage tank 3 as raw water 34. The volume of the water storage tank 3 is Π×5 cm 2 ×10cm=785.4cm 3 , so the amount of pure water is within the solvent range of water storage tank 3. 10 mol of dried sodium bicarbonate is added to reaction tank 4. The relative molecular mass of sodium bicarbonate is 84 g / mol, so the total weight is 840 g. Its density is 2.16 g / cm³, so its volume is 388.8 cm 3 Since it only occupies half of the bottom area of ​​the reaction chamber 4, its height is 388.8 / (3.14×5 2 / 2) = 9.91 cm. 3.33 mol of dried citric acid is added to the other side of the partition 41 of the reaction chamber 4. The relative molecular mass of citric acid is 192 g / mol, so the total weight is 640 g. Its density is 1.542 g / cm³, so its volume is 415.0 cm 3 Since it only occupies half of the bottom area of ​​the reaction chamber 4, its height is 415 / (3.14×5 2Because the reaction chamber 4 is 15 cm high and the partition 41 is 12 cm high, both sodium bicarbonate and citric acid can be placed in the reaction chamber 4 and separated by the partition 41 .

[0059] After loading the reactants, check the sealing state of the equipment and confirm that each pressure switch and pressure controller can operate normally. Finally, put in the sterile bag 14 containing the filter 141, the pneumoperitoneum tube 142, and the pneumoperitoneum needle 143, screw on the protective cover 11, and the equipment production is completed.

[0060] When in use, first place the pneumoperitoneum machine on the ground and fix or firmly place it with a tripod; then use the water outlet switch 33 to open the water outlet valve 31, so that the raw water 34 in the water storage tank 3 enters the reaction tank 4 through the water outlet pipe 32. When the raw water 34 enters the reaction tank 4, the solid sodium bicarbonate and citric acid will gradually dissolve in the water to form a reaction mixture 44. Since the acidity of citric acid is stronger than that of carbonic acid, it will undergo a double decomposition reaction with sodium bicarbonate to produce a large amount of carbon dioxide. The reaction formula is as follows:

[0061] 3NaHCO3+C6H8O7=C6H5O7Na3+3H2O+3CO2↑.

[0062] There are 10 mol of sodium bicarbonate and 3.3 mol of citric acid in the reaction chamber 4. The complete reaction can produce 10 mol of carbon dioxide. The standard volume of carbon dioxide is 22.4 L / mol, so a total of 224 L of carbon dioxide gas can be generated. The volume of human pneumoperitoneum is about 5 to 10 L, and the maximum value is 10 L. Since the pneumoperitoneum will be in a state of slight leakage after it is established, the leakage volume is set to 1 L / min; if it is assumed that the pneumoperitoneum needs to be re-established every hour for some reason (such as the need to remove surgical instruments or endoscopes), the gas consumption per hour is 10 L + 1 L × 60 = 70 L, and the reaction can roughly support a 3-hour operation.

[0063] After the gas is generated, the inlet switch 24 is used to open the inlet valve 22, so that the carbon dioxide generated in the reaction chamber 4 enters the buffer gas chamber 2 through the inlet pipe 23; then the sterile bag 14 is opened, the filter 141, the pneumoperitoneum tube 142 and the pneumoperitoneum needle 143 are taken out and connected, the filter 141 is connected to the pressure control valve 12, the pressure control valve 12 is adjusted to make the outlet pressure appropriate, and then the pneumoperitoneum needle 143 is inserted into the human body to allow the generated carbon dioxide gas to enter the human abdominal cavity 6, and gradually establish pneumoperitoneum. When pneumoperitoneum is established, the pressure control valve 12 is adjusted down until the intake volume is approximately equal to the leakage volume, so as to maintain the balance of pneumoperitoneum.

[0064] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0065] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable pneumoperitoneum machine, characterized in that: It includes a chassis, and a water storage tank, a reaction tank, an air inlet pipe and a sterile component arranged inside the chassis; The water storage bin is arranged on the upper part of the reaction bin, and raw water is stored inside the water storage bin; a water outlet pipe connected to the reaction bin is arranged at the bottom of the water storage bin; The reaction chamber is filled with reactants that react with water to generate carbon dioxide gas; The air inlet end of the air inlet pipe is connected to the inner top of the reaction bin, and the air outlet end of the air inlet pipe passes through the water storage bin; The sterile component is arranged above the water storage tank, and the sterile component includes a sterile bag, and a pneumoperitoneum tube and a pneumoperitoneum needle arranged inside the sterile bag; one end of the pneumoperitoneum tube is connected to the outlet end of the air inlet pipe, and the other end of the pneumoperitoneum tube is connected to the pneumoperitoneum needle; A buffer gas bin is also provided inside the chassis, and the buffer gas bin is located on the top of the water storage bin, and the air outlet end of the air inlet pipe is connected to the interior of the buffer gas bin; an exhaust pipe is provided on the top of the buffer gas bin, and the outlet of the exhaust pipe can be connected to the inlet end of the pneumoperitoneum tube; a pressure control valve is provided at the outlet of the exhaust pipe, and the other end of the pressure control valve is connected to the pneumoperitoneum tube through a filter; an outlet pressure switch is provided at the inlet of the exhaust pipe.

2. The portable pneumoperitoneum machine according to claim 1, characterized in that: An exhaust port is provided on the side of the buffer gas bin, and an exhaust pressure switch is provided on the exhaust port.

3. The portable pneumoperitoneum machine according to claim 1 or 2, characterized in that: The raw materials in the reaction chamber include a carbonate compound and a weak acid separated by a partition.

4. The portable pneumoperitoneum machine according to claim 3, characterized in that: The carbonate compound is at least one of sodium carbonate and sodium bicarbonate, which is dried, dehydrated, pressed into blocks and placed on one side of the partition in the reaction chamber; the weak acid is at least one of citric acid, malic acid, boric acid, and tartaric acid, which is dried, dehydrated, pressed into blocks and placed on the other side of the partition in the reaction chamber.

5. The portable pneumoperitoneum machine according to claim 4, characterized in that: The sterile component also includes a filter, which is placed in a sterile package and can be installed at the inlet end of the pneumoperitoneum tube.

6. The portable pneumoperitoneum machine according to any one of claims 1, 2, 4 and 5, characterized in that: The outlet end of the air intake pipe is provided with an air intake valve, which is connected to an air intake switch arranged on the outer wall of the chassis, and the air intake valve is opened or closed by the air intake switch.

7. The portable pneumoperitoneum machine according to claim 6, characterized in that: The water outlet pipe is provided with a water outlet valve, which is connected to a water outlet switch arranged on the outer wall of the chassis.

8. The portable pneumoperitoneum machine according to claim 6, characterized in that: An application chamber is arranged on the top of the buffer gas chamber, the aseptic assembly and the exhaust pipe are both located in the application chamber, and a protective cover is arranged on the top of the application chamber.

9. The portable pneumoperitoneum machine according to claim 1, characterized in that: The casing of the pneumoperitoneum machine is cylindrical.

10. The portable pneumoperitoneum machine according to claim 1, characterized in that: A triangular bracket is arranged at the bottom of the chassis, and the triangular bracket comprises foot nails whose upper ends are connected to the bottom of the chassis.

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