Dual mode insufflator system

Abstract

The application discloses a dual-mode pneumoperitoneum machine system, which comprises a pneumoperitoneum machine and a first filter and a second filter matched with the pneumoperitoneum machine. The first filter comprises a first main cylinder and a gas curtain end cover arranged at the distal end of the first main cylinder. The second filter comprises a second main cylinder and a circulating smoke exhaust end cover arranged at the distal end of the second main cylinder. The first main cylinder and the second main cylinder have the same internal structure and each comprises a group of independent hollow channels and a liquid collecting chamber. An installation cylinder is embedded on the proximal end face of the pneumoperitoneum machine and is selectively connected with the first filter and the second filter through the installation cylinder. A group of butt joints are arranged on the distal end of the installation cylinder and are communicated with a gas curtain control module and a circulating smoke exhaust control module arranged in the pneumoperitoneum machine. A group of connecting holes are arranged on the gas curtain end cover and the circulating smoke exhaust end cover respectively and are communicated with the group of hollow channels and the group of butt joints, so that the first filter is connected with the gas curtain control module to form a gas curtain mode and the second filter is connected with the circulating smoke exhaust control module to form a circulating smoke exhaust mode.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically to a dual-mode pneumoperitoneum system. Background Technology

[0002] Laparoscopic surgery requires the creation of a pneumoperitoneum in the abdomen, which is typically accomplished using a pneumoperitoneum machine. The pneumoperitoneum machine is connected to a gas source and inflates the abdomen to create a pneumoperitoneum. The establishment of a pneumoperitoneum provides the necessary space and field of vision for laparoscopic surgery, significantly improving the safety, efficiency, and ease of operation of the procedure.

[0003] The main problems in practice are twofold: First, the input gas from the gas supply equipment usually contains impurities, and impure carbon dioxide containing these impurities cannot be directly discharged into the pneumoperitoneum. Second, the surgical instruments used during the operation, such as electrosurgical units, generate high temperatures during cutting, which vaporize the human tissue in contact with the instruments, producing a large amount of smoke. This smoke fills the pneumoperitoneum, affecting visibility and causing blurred vision during the operation. Furthermore, the smoke contains carbonized tissue, viruses, and cellular debris, making it impossible to directly expel this smoke to avoid contaminating the surgical environment. To address the aforementioned issues, existing insufflators typically employ two control modes depending on the surgical instruments: a circulating smoke extraction mode (as disclosed in publication number CN118633977A) and an air curtain mode. These two modes require different filter structures and necessitate the use of different insufflators, increasing operating costs and introducing inherent limitations. In the circulating smoke extraction mode, intermittent air intake and pressure measurement are used to monitor intra-abdominal pressure. This involves pausing the carbon dioxide supply and smoke extraction circulation during pressure measurement. This reduces the average smoke extraction flow rate and makes it difficult to replenish gas in case of leakage, potentially causing abdominal pressure fluctuations, affecting the stability of the surgical field, and increasing surgical risks. While the air curtain mode allows for continuous pressure measurement, its filters have limited internal space. Once the collection chamber is full, the filter needs to be replaced, interrupting the surgical procedure and potentially introducing infection risks or operational inconsistencies, impacting the overall smoothness and safety of the surgery and failing to meet the needs of prolonged or high-volume surgeries.

[0004] Therefore, a new pneumoperitoneum machine is needed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a dual-mode pneumoperitoneum system.

[0006] The objective of this invention is achieved through the following technical solution: A dual-mode pneumoperitoneum system includes a pneumoperitoneum machine and a first filter and a second filter adapted to it. The first filter includes a first main cylinder and an air curtain end cap covering its distal end. The second filter includes a second main cylinder and a circulating smoke exhaust end cap covering its distal end. The internal structures of the first and second main cylinders are identical, each including a set of independent hollow channels and a liquid collection chamber. An installation cylinder is embedded on the proximal end face of the pneumoperitoneum machine, and can be selectively engaged with the first and second filters through the installation cylinder. A set of mating holes is provided on the distal end of the installation cylinder. A set of docking holes is connected to the air curtain control module and the circulating smoke exhaust control module built into the pneumoperitoneum machine. The air curtain end cap and the circulating smoke exhaust end cap are respectively provided with a set of connecting holes that can connect a set of hollow channels to the set of docking holes, so that the first filter is connected to the air curtain control module to form an air curtain mode, and the second filter is connected to the circulating smoke exhaust control module to form a circulating smoke exhaust mode. In the circulating smoke exhaust mode, the circulating smoke exhaust control module can connect to the abdominal cavity and the pressure measuring module through one of the hollow channels to collect the pressure signal in the abdominal cavity in real time.

[0007] Preferably, the pneumoperitoneum machine is equipped with a circulation module, a distribution module, and a pressure measuring module. A set of docking holes includes an air inlet docking hole, a smoke exhaust docking hole, an air curtain docking hole, and a pressure measuring docking hole. The air inlet docking hole is connected to the distribution module through an air inlet connecting pipe to form an air inlet pipeline. The smoke exhaust docking hole is connected to the circulation module through a smoke exhaust pipe to form an air extraction and smoke exhaust pipeline. The air curtain docking hole is connected to the circulation module through an air curtain pipe to form an air curtain pipeline. The pressure measuring docking hole is connected to the pressure measuring module through a pressure connector to form a pressure measuring pipeline. The air inlet pipeline, the air extraction and smoke exhaust pipeline, and the air curtain pipeline constitute the air curtain control module. The air inlet pipeline, the air extraction and smoke exhaust pipeline, and the pressure measuring pipeline constitute the circulation and smoke exhaust control module.

[0008] Preferably, a set of hollow channels includes an air inlet channel, an exhaust channel, and a functional channel, with the liquid collection chamber located within the exhaust channel.

[0009] Preferably, the air curtain end cap is provided with a first air inlet hole that connects to the air inlet docking hole, a first exhaust hole that connects to the smoke exhaust docking hole, and an air curtain hole that connects to the air curtain docking hole; the air inlet channel in the first filter is connected to the air inlet pipe through the first air inlet hole, the smoke exhaust channel is connected to the smoke exhaust pipe through the first exhaust hole, and the functional channel is connected to the air curtain pipe to form the air curtain mode.

[0010] Preferably, the circulating smoke exhaust end cap is provided with a second air inlet hole that connects to the air inlet docking hole, a second exhaust hole that connects to the smoke exhaust docking hole, a pressure measuring hole that connects to the pressure measuring docking hole, and a plug that connects to the air curtain docking hole. The air inlet channel in the second filter is connected to the air inlet pipeline through the second air inlet hole, and the exhaust smoke extraction channel is connected to the exhaust smoke extraction pipeline through the second exhaust hole. At the same time, the plug blocks the air curtain docking hole, so that the functional channel in the second filter is connected to the pressure measuring module through the pressure measuring hole to form the circulating smoke exhaust mode. The circulating smoke exhaust control module can be connected to the abdominal cavity and the pressure measuring module through the functional channel to collect the pressure signal in the abdominal cavity in real time.

[0011] Preferably, the mounting cylinder includes an interface seat and a locking cover. The filter is inserted into the interface seat and locked or unlocked by the locking cover. An identification module is provided on the top of the interface seat. A trigger switch is provided near the proximal end of the identification module. A first trigger element is correspondingly provided on the outer wall of the first main cylinder, and a second trigger element is correspondingly provided on the outer wall of the second main cylinder. When the trigger switch is triggered by the first trigger element, it is identified as air curtain mode. When the trigger switch is triggered by the second trigger element, it is identified as circulating smoke exhaust mode.

[0012] Preferably, both the first filter and the second filter are provided with a proximal end cap, and the bottom of the proximal end cap is provided with a leakage valve that communicates with the liquid collection chamber, so as to discharge the liquid in the liquid collection chamber when the first filter and the second filter are in operation.

[0013] Preferably, the distal ends of the first main cylinder and the second main cylinder are each covered with a connecting end cap. The end face of the connecting end cap is provided with connecting ribs, which divide the space into connecting cavities that communicate with the distal ends of the air intake channel, the exhaust channel, and the functional channel, respectively. A first filter element is provided in the connecting cavity communicating with the air intake channel to filter the air intake channel. A radially extending baffle is provided in the exhaust channel. The cavity between the baffle and the proximal end cap is the liquid collection chamber. A second filter element for filtering the exhaust channel is embedded between the baffle and the connecting end cap. A third filter element for filtering the functional channel is embedded between the inner end face of the proximal end cap and the proximal end of the functional channel.

[0014] Preferably, the top of the baffle is provided with a flow port, the bottom of the baffle and the exhaust channel form a flow channel that communicates with the leakage valve, and a guide block is provided on the near end face of the baffle that connects to the bottom of the flow port and extends into the flow channel.

[0015] A dual-mode pneumoperitoneum system includes a pneumoperitoneum machine and a filter. The pneumoperitoneum machine has a mounting cylinder on its proximal end face. Inside the pneumoperitoneum machine are an air curtain control module and a circulating smoke exhaust control module connected to the mounting cylinder. The filter is detachably inserted into the mounting cylinder. The main cylinder of the filter has a set of independent hollow channels and a liquid collection chamber. The distal end of the main cylinder can be optionally covered with an air curtain end cap or a circulating smoke exhaust end cap. One set of hollow channels can be connected to the air curtain control module through the air curtain end cap to form an air curtain mode, or connected to the circulating smoke exhaust control module through the circulating smoke exhaust end cap to form a circulating smoke exhaust mode. The proximal end of the filter can be connected to the abdominal cavity. In the circulating smoke exhaust mode, the circulating smoke exhaust control module can connect to the abdominal cavity and a pressure measurement module through one of the hollow channels to collect the pressure signal within the abdominal cavity in real time. A leakage valve is provided at the bottom of the proximal end of the filter, connected to the liquid collection chamber. The leakage valve can discharge liquid from the liquid collection chamber when the filter is in operation.

[0016] The beneficial effects of this invention are mainly reflected in: 1. Independent hollow channels are set up to connect to the air curtain end cap or the circulating smoke exhaust end cap respectively. On the one hand, this meets the flow requirements of independent channels in air curtain mode. On the other hand, in circulating smoke exhaust mode, a single hollow channel can be used to form an independent physical pressure measurement channel, which is isolated from the main airway for air extraction and smoke exhaust. This allows for real-time acquisition of intra-abdominal pressure signals while the circulating smoke exhaust module is in operation, without interrupting the circulating smoke exhaust mode. This ensures the accuracy and reliability of the acquired pressure signals and effectively overcomes problems such as decreased smoke exhaust flow and intra-abdominal pressure fluctuations caused by interruption of pressure measurement. It ensures the efficiency of continuous operation and that the smoke exhaust process is not affected by pressure measurement, keeping the surgical field clear and improving the safety and accuracy of operation. 2. A Luer pressure relief valve is installed to connect with the collection chamber, so that when the liquid in the collection chamber accumulates to the warning line or needs to be drained, the liquid can be safely drained to an external container simply by opening the valve without disassembling or replacing the entire filter. This allows the drainage operation to be performed at any time during the operation, ensuring the continuity, sustainability and safety of the operation. 3. The filter can use the same main cylinder to adapt to two different remote end caps (i.e., air curtain end cap and circulating smoke exhaust end cap). By adapting to different remote end caps, different working modes can be connected without the need to produce two completely different filters, which greatly reduces production costs, realizes integrated production of filters, reduces system complexity and usage costs. The installation cylinder is equipped with an identification module to identify different filters to connect to different working modes, simplifying actual operation. 4. The functional channels are set independently of the exhaust and inlet channels. The functional channels are connected to the air curtain duct and pressure test docking hole through the air curtain end cap and the circulating exhaust end cap, respectively, to meet the different needs of the air curtain mode and the circulating exhaust mode. The air curtain duct and the pressure test duct are physically isolated to ensure safety during use. Attached Figure Description

[0017] The technical solution of the present invention will be further described below with reference to the accompanying drawings: Figure 1 : Partial schematic diagram of an embodiment of the present invention; Figure 2 : A partial schematic diagram from another angle of an embodiment of the present invention; Figure 3 : A partial exploded view of the filter and mounting cylinder in an embodiment of the present invention; Figure 4 : Front view of the main cylinder in an embodiment of the present invention; Figure 5 : Rear view of the main cylinder in an embodiment of the present invention; Figure 6 : A partial exploded view of the first filter in an embodiment of the present invention; Figure 7 : A schematic diagram of the second filter in an embodiment of the present invention; Figure 8 : An exploded view of the first filter in an embodiment of the present invention; Figure 9 : An exploded view of the first filter from another angle in an embodiment of the present invention; Figure 10 Cross-sectional views of the first / second main cylinder in this embodiment of the invention; Figure 11 This is a schematic diagram of the first filter removing the first main cylinder and the distal end cap in an embodiment of the present invention. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0019] In the description of the solution, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Also, in the description of the solution, with the operator as a reference, the direction closer to the operator is the proximal end, and the direction farther from the operator is the distal end.

[0020] like Figures 1 to 11 As shown, this invention discloses a dual-mode pneumoperitoneum system to simultaneously achieve two operating modes: air curtain mode and circulating smoke exhaust mode. This solution has two feasible embodiments.

[0021] Example 1: The dual-mode pneumoperitoneum system includes a pneumoperitoneum machine 1 and a first filter and a second filter adapted thereto. The first filter includes a first main cylinder and an air curtain end cap 204 covering its distal end. The second filter includes a second main cylinder and a circulating smoke exhaust end cap 205 covering its distal end. The internal structures of the first and second main cylinders are identical, each including a set of independent hollow channels and a liquid collection chamber 203. An installation cylinder is embedded on the proximal end face of the pneumoperitoneum machine 1, and can be selectively engaged with the first and second filters through the installation cylinder. A [missing information - likely a device or component] is provided on the distal end of the installation cylinder. A set of docking holes is provided, which are connected to the air curtain control module and the circulating smoke exhaust control module built into the pneumoperitoneum machine 1. The air curtain end cap 204 and the circulating smoke exhaust end cap 205 are respectively provided with a set of connecting holes that can connect a set of hollow channels to the set of docking holes, so that the first filter is connected to the air curtain control module to form an air curtain mode and the second filter is connected to the circulating smoke exhaust control module to form a circulating smoke exhaust mode. In the circulating smoke exhaust mode, the circulating smoke exhaust control module can be connected to the abdominal cavity and the pressure measuring module through one of the hollow channels to collect the pressure signal in the abdominal cavity in real time.

[0022] Among them, such as Figure 1 and Figure 2As shown, the pneumoperitoneum machine 1 is equipped with a circulation module 4, a distribution module 5, and a pressure measuring module. A set of docking holes includes an air inlet docking hole 101, a smoke exhaust docking hole 102, an air curtain docking hole 103, and a pressure measuring docking hole 104. The air inlet docking hole 101 is connected to the distribution module 5 through an air inlet connecting pipe 105 to form an air inlet pipeline. The smoke exhaust docking hole 102 is connected to the circulation module 4 through a smoke exhaust pipe 106 to form an air extraction and smoke exhaust pipeline. The air curtain docking hole 103 is connected to the circulation module 4 through an air curtain pipe 107 to form an air curtain pipeline. The pressure measuring docking hole 104 is connected to the pressure measuring module through a pressure connector 11 to form a pressure measuring pipeline. The air inlet pipeline, the air extraction and smoke exhaust pipeline, and the air curtain pipeline constitute the air curtain control module. The air inlet pipeline, the air extraction and smoke exhaust pipeline, and the pressure measuring pipeline constitute the circulation and smoke exhaust control module. In the air curtain mode, the air curtain duct itself has a pressure measurement function (the pressure measurement function in the air curtain mode is existing technology and will not be described in detail here). In the circulating smoke exhaust module, the pressure measurement module can measure the pressure according to the pressure measurement duct, which not only enables online real-time pressure measurement in any mode, but also isolates the air curtain duct 107 and the pressure connector 11 through physical structure, so that the pressure measurement structures in the two modes do not interfere with each other, ensuring safety in use.

[0023] The first and second main cylinders have essentially the same structure, both containing a set of identical hollow channels. These hollow channels include an air inlet channel 206, an exhaust channel 207, and a functional channel 208. The liquid collection chamber 203 is located within the exhaust channel 207. The air inlet channel 206 and exhaust channel 207 in the first and second filters are connected to the air inlet pipe and exhaust pipe, respectively. However, the functional channels 208 in the first and second filters have different connections. The functional channel 208 in the first filter connects to the air curtain pipe, while the functional channel 208 in the second filter connects to the pressure measuring pipe, thus achieving different functions. This structure allows the internal structures of the first and second main cylinders in both filters to be manufactured using the same mold, significantly reducing production costs and enabling integrated production of the filter 2, thereby reducing system complexity and operating costs.

[0024] Specifically, the air curtain end cap 204 is provided with a first air inlet 2041 that connects to the air inlet docking hole 101, a first exhaust hole 2042 that connects to the smoke exhaust docking hole 102, and an air curtain hole 2043 that connects to the air curtain docking hole 103; the air inlet channel 206 in the first filter is connected to the air inlet pipe through the first air inlet 2041, the exhaust channel 207 is connected to the exhaust pipe through the first exhaust hole 2042, and the functional channel 208 is connected to the air curtain pipe, forming the air curtain mode.

[0025] The circulating smoke exhaust end cap 205 is provided with a second air inlet 2051 that connects to the air inlet docking hole 101, a second exhaust hole 2052 that connects to the smoke exhaust docking hole 102, a pressure measuring hole 2053 that connects to the pressure measuring docking hole 104, and a plug 2054 that connects to the air curtain docking hole 103. The air inlet channel 206 in the second filter is connected to the air inlet pipeline through the second air inlet 2051, and the exhaust smoke extraction channel 207 is connected to the exhaust smoke extraction pipeline through the second exhaust hole 2052. At the same time, the plug 2054 blocks the air curtain docking hole 103, so that the functional channel 208 in the second filter is connected to the pressure measuring module through the pressure measuring hole 2053 to form the circulating smoke exhaust mode. The circulating smoke exhaust control module can be connected to the abdominal cavity and the pressure measuring module through the functional channel 208 to collect the pressure signal in the abdominal cavity in real time.

[0026] The air curtain end cap 204 and the circulating smoke exhaust end cap 205 are both provided with sealing rings on their distal end faces to seal the gap between them and the mounting cylinder, thereby achieving a sealed connection with the exhaust pipe, the functional channel 208, the air curtain pipe and / or the pressure measuring docking hole 104.

[0027] The mounting cylinder includes an interface seat 601 and a locking cover 602. The filter 2 is inserted into the interface seat 601 and locked or unlocked by the locking cover 602. An identification module 603 is provided on the top of the interface seat 601. A trigger switch 6031 is provided near the proximal end of the identification module 603. A first trigger element 2011 is correspondingly provided on the outer wall of the first main cylinder, and a second trigger element 2012 is correspondingly provided on the outer wall of the second main cylinder. When the trigger switch 6031 is triggered by the first trigger element 2011, it is identified as the air curtain mode. When the trigger switch 6031 is triggered by the second trigger element 2012, it is identified as the circulating smoke exhaust mode. The main difference between the first trigger 2011 and the second trigger 2012 lies in the different protruding positions of their distal ends used to trigger the trigger switch 6031. The trigger switch 6031 has two parallel trigger points, a left trigger point and a right trigger point. The right distal end of the first trigger 2011 protrudes outward, inserting into the interface socket 601 and triggering the right trigger point; the left distal end of the second trigger 2012 protrudes outward, inserting into the interface socket 601 and triggering the left trigger point. This structure allows the identification module 603 to identify the first filter and the second filter through different trigger signals, thus connecting the air curtain mode or the circulating smoke exhaust mode.

[0028] The structural difference between the first main cylinder and the second main cylinder lies only in the trigger points at their distal ends. All other structural features of the first and second main cylinders are identical. To further simplify actual operation, two guide blocks 2013 are also provided on both sides of the outer wall of the first and second main cylinders to define the insertion direction of the main cylinder 201.

[0029] like Figures 8 to 9 As shown, the far ends of the first filter and the second filter (i.e., the first main cylinder and the second main cylinder) are each covered with a connecting end cap 209. The end face of the connecting end cap 209 is provided with a connecting rib 2091 and at least one positioning hole 2092. The back of the air curtain end cap 204 or the circulating smoke exhaust end cap 205 is provided with a connecting groove 210 that matches the connecting rib 2091 and a positioning rod 211 that matches the positioning hole 2092. The connecting rib 2091 is fixedly connected to the connecting groove 210 and the positioning hole 2092 is fixedly connected to the positioning rod 211, so that the air curtain end cap 204 or the circulating smoke exhaust end cap 205 is disposed on the connecting end cap 209.

[0030] In Embodiment 1, the air curtain end cap 204 or the circulating smoke exhaust end cap 205 is preferably fixedly disposed on the connecting end cap 209, for example, by ultrasonic welding.

[0031] Furthermore, the distal end face of the connecting end cap 209 is divided by the connecting ribs 2091 to form connecting cavities that communicate with the distal ends of the air intake channel 206, the exhaust channel 207, and the functional channel 208, respectively. Specifically, the connecting cavities include a first connecting cavity 2093 communicating with the air intake channel 206, a second connecting cavity 2094 communicating with the exhaust channel 207, and a third connecting cavity 2095 communicating with the functional channel 208. The first connecting cavity 2093, the second connecting cavity 2094, and the third connecting cavity 2095 are respectively provided with a first connecting port 2096, a second connecting port 2097, and a third connecting port 2098 for communication. A first filter element 7 is provided in the first connecting cavity 2093 to filter the air intake channel 206. A set of protrusions are evenly distributed on the cavity wall of the first connecting cavity 2093 to define the position of the first filter element 7.

[0032] A radially extending baffle 212 is provided inside the exhaust duct 207. The cavity between the baffle 212 and the proximal end cap 202 is the liquid collection chamber 203. A second filter element 8 for filtering the exhaust duct 207 is embedded between the baffle 212 and the connecting end cap 209. A third filter element 9 for filtering the functional channel 208 is embedded between the inner end face of the proximal end cap 202 and the proximal end of the functional channel 208. The first filter element 7, the second filter element 8, and the third filter element 9 respectively filter the air intake channel 206, the exhaust duct 207, and the functional channel 208 to ensure safe use.

[0033] Both the first and second filters are provided with a proximal end cap 202. A leakage valve 3, connected to the collection chamber 203, is located at the bottom of the proximal end cap 202 to drain liquid from the collection chamber 203 when the first and second filters are in operation. The leakage valve 3 is preferably a Luer leakage valve. The pressure relief valve 3, connected to the collection chamber 203, allows the liquid to be safely drained to an external container simply by opening the valve when the liquid accumulates to a warning line or needs to be drained, without disassembling or replacing the entire filter. This enables the drainage operation to be performed at any time during the procedure, ensuring the continuity, sustainability, and safety of the surgery.

[0034] The baffle 212 has a flow port 213 at its top, and a flow channel 214 connected to the Luer leak valve 3 is formed between the bottom of the baffle 212 and the exhaust duct 207. A guide block 215 is provided on the proximal end face of the baffle 212, which connects to the bottom of the flow port 213 and extends into the flow channel 214. Preferably, the flow port 213 is located at the top to facilitate gas discharge while effectively preventing liquid outflow. At the same time, water vapor in the exhaust duct 207 will condense at the proximal end of the baffle 212 and flow rapidly into the flow channel 214 along the guide block 215.

[0035] The proximal end cap 202 has a connection port 2021 on its proximal end face. The connection port 2021 contains three through holes 2022 that communicate with the proximal ends of the air intake channel 206, the exhaust channel 207, and the functional channel 208, respectively. The connection port 2021 can be connected to a three-lumen tube 10, which has three lumens that respectively connect to the three through holes 2022. The three-lumen tube 10 can be connected to the abdominal cavity via a surgical instrument (e.g., a trocar), allowing the proximal end of the filter 2 to connect to the abdominal cavity.

[0036] In Example 2, the dual-mode pneumoperitoneum system includes a pneumoperitoneum machine 1 and a filter 2. The pneumoperitoneum machine 1 has a mounting cylinder on its proximal end face. The pneumoperitoneum machine 1 contains an air curtain control module and a circulating smoke exhaust control module connected to the mounting cylinder. The filter 2 is detachably inserted into the mounting cylinder. The main cylinder 201 of the filter 2 has a set of independent hollow channels and a liquid collection chamber 203. The distal end of the main cylinder 201 can be optionally covered with an air curtain end cap 204 or a circulating smoke exhaust end cap 205. The set of hollow channels can pass through the air curtain end cap 204. 4. The air curtain control module can be connected to form an air curtain mode, or the circulating smoke exhaust control module can be connected through the circulating smoke exhaust end cap 205 to form a circulating smoke exhaust mode. The proximal end of the filter 2 can be connected to the abdominal cavity. In the circulating smoke exhaust mode, the circulating smoke exhaust control module can be connected to the abdominal cavity and the pressure measuring module through one of the hollow channels to collect the pressure signal in the abdominal cavity in real time. The bottom of the proximal end of the filter 2 is provided with a leakage valve 3 that communicates with the liquid collection chamber 203. The leakage valve 3 can discharge the liquid in the liquid collection chamber 203 when the filter 2 is working.

[0037] The connecting rib 2091 and the connecting groove 210 can be fixed together in any suitable way. In embodiment 2, the connecting rib 2091 and the connecting groove 210 are snapped together to realize a quick-release structure, so that the air curtain end cover 204 or the circulating smoke exhaust end cover 205 can be detachably connected to the connecting end cover 209 to facilitate the replacement of the air curtain end cover 204 or the circulating smoke exhaust end cover 205.

[0038] The difference between Example 2 and Example 1 lies in the fitting structure between the filter's main cylinder and distal end cap. In Example 1, the insufflator 1 is directly equipped with two filters (i.e., a first filter and a second filter) to adapt to two working modes. The main difference between the first filter and the second filter is that their distal end caps are different. In Example 2, the insufflator 1 is directly fitted with one filter. The main cylinder of this filter achieves the two working modes by fitting two different distal end caps. Other structures are the same and will not be described further. Both Example 1 and Example 2 can achieve compatibility between two working modes, continuous pressure measurement in circulating smoke exhaust mode, and continuous online drainage during surgery. They also satisfy the goal of reducing production costs and achieving integrated production by using the same tool to manufacture the filter's main cylinder, proximal end cap, and other main structures.

[0039] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0040] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A dual-mode pneumoperitoneum system, characterized in that: The device includes an insufflator (1) and a first filter and a second filter adapted thereto. The first filter includes a first main cylinder and an air curtain end cap (204) covering its distal end. The second filter includes a second main cylinder and a circulating smoke exhaust end cap (205) covering its distal end. The internal structures of the first and second main cylinders are the same, each including a set of independent hollow channels and a liquid collection chamber (203). An installation cylinder is embedded on the proximal end face of the insufflator (1) and can be selectively engaged with the first filter and the second filter through the installation cylinder. A set of docking holes is provided on the distal end of the installation cylinder. A set of docking holes are connected to the air curtain control module and the circulating smoke exhaust control module built into the pneumoperitoneum machine (1). The air curtain end cap (204) and the circulating smoke exhaust end cap (205) are respectively provided with a set of connecting holes that can connect a set of hollow channels and a set of docking holes, so that the first filter is connected to the air curtain control module to form an air curtain mode and the second filter is connected to the circulating smoke exhaust control module to form a circulating smoke exhaust mode. In the circulating smoke exhaust mode, the circulating smoke exhaust control module can connect the abdominal cavity and the pressure measurement module through one of the hollow channels to collect the pressure signal in the abdominal cavity in real time.

2. The dual-mode pneumoperitoneum system according to claim 1, characterized in that: The pneumoperitoneum machine (1) is equipped with a circulation module (4), a distribution module (5), and a pressure measuring module. A set of connection holes includes an air inlet connection hole (101), a smoke exhaust connection hole (102), an air curtain connection hole (103), and a pressure measuring connection hole (104). The air inlet connection hole (101) is connected to the distribution module (5) via an air inlet connecting pipe (105) to form an air inlet pipeline. The smoke exhaust connection hole (102) is connected to the distribution module (5) via a smoke exhaust pipe (106). The circulation module (4) is connected to form an exhaust pipe. The air curtain docking hole (103) is connected to the circulation module (4) through the air curtain pipe (107) to form an air curtain pipe. The pressure measuring docking hole (104) is connected to the pressure measuring module through the pressure connector (11) to form a pressure measuring pipe. The air inlet pipe, the exhaust pipe and the air curtain pipe constitute the air curtain control module. The air inlet pipe, the exhaust pipe and the pressure measuring pipe constitute the circulation exhaust control module.

3. The dual-mode pneumoperitoneum system according to claim 2, characterized in that: The hollow channel group includes an air intake channel (206), an exhaust channel (207), and a functional channel (208), with the liquid collection chamber (203) located within the exhaust channel (207).

4. The dual-mode pneumoperitoneum system according to claim 3, characterized in that: The air curtain end cap (204) is provided with a first air inlet (2041) that connects to the air inlet docking hole (101), a first exhaust hole (2042) that connects to the smoke exhaust docking hole (102), and an air curtain hole (2043) that connects to the air curtain docking hole (103); the air inlet channel (206) in the first filter is connected to the air inlet pipeline through the first air inlet (2041), the exhaust channel (207) is connected to the exhaust pipeline through the first exhaust hole (2042), and the functional channel (208) is connected to the air curtain pipeline to form the air curtain mode.

5. The dual-mode pneumoperitoneum system according to claim 3, characterized in that: The circulating smoke exhaust end cap (205) is provided with a second air inlet (2051) that connects to the air inlet docking hole (101), a second exhaust hole (2052) that connects to the smoke exhaust docking hole (102), a pressure measuring hole (2053) that connects to the pressure measuring docking hole (104), and a plug (2054) that connects to the air curtain docking hole (103). The air intake channel (206) in the second filter is connected to the air intake pipeline through the second air inlet (2051). The ventilation and exhaust channel (207) is connected to the ventilation and exhaust pipeline through the second exhaust port (2052). At the same time, the plug (2054) blocks the air curtain docking hole (103), so that the functional channel (208) in the second filter is connected to the pressure measuring module through the pressure measuring hole (2053) to form the circulating exhaust mode. The circulating exhaust control module can be connected to the abdominal cavity and the pressure measuring module through the functional channel (208) to collect the pressure signal in the abdominal cavity in real time.

6. The dual-mode pneumoperitoneum system according to claim 1, characterized in that: The mounting cylinder includes an interface seat (601) and a locking cover (602). The filter (2) is inserted into the interface seat (601) and locked or unlocked by the locking cover (602). An identification module (603) is provided on the top of the interface seat (601). A trigger switch (6031) is provided near the end of the identification module (603). A first trigger element (2011) is correspondingly provided on the outer wall of the first main cylinder, and a second trigger element (2012) is correspondingly provided on the outer wall of the second main cylinder. When the trigger switch (6031) is triggered by the first trigger element (2011), it is identified as the air curtain mode. When the trigger switch (6031) is triggered by the second trigger element (2012), it is identified as the circulating smoke exhaust mode.

7. The dual-mode pneumoperitoneum system according to claim 1, characterized in that: Both the first filter and the second filter are provided with a proximal end cap (202). The bottom of the proximal end cap (202) is provided with a leakage valve (3) that communicates with the liquid collection chamber (203) so as to discharge the liquid in the liquid collection chamber (203) when the first filter and the second filter are in operation.

8. The dual-mode pneumoperitoneum system according to claim 7, characterized in that: Both the first main cylinder and the second main cylinder are covered with a connecting end cap (209) at their distal ends. The end face of the connecting end cap (209) is provided with a connecting rib (2091), which forms connecting cavities that are respectively connected to the distal ends of the air intake channel (206), the exhaust channel (207), and the functional channel (208). A first filter element (7) is provided in the connecting cavity connected to the air intake channel (206) to filter the air intake channel (206); the exhaust channel (208) is connected to the exhaust channel (207). A radially extending baffle (212) is provided inside the smoke passage (207). The cavity between the baffle (212) and the proximal end cap (202) is the liquid collection chamber (203). A second filter element (8) for filtering the exhaust smoke passage (207) is embedded between the baffle (212) and the connecting end cap (209). A third filter element (9) for filtering the functional channel (208) is embedded between the inner end face of the proximal end cap (202) and the proximal end of the functional channel (208).

9. The dual-mode pneumoperitoneum system according to claim 8, characterized in that: The top of the baffle (212) is provided with a flow port (213), and the bottom of the baffle (212) and the exhaust channel (207) form a flow channel (214) that communicates with the leakage valve (3). The near end face of the baffle (212) is provided with a guide block (215) that connects to the bottom of the flow port (213) and extends to the flow channel (214).

10. A dual-mode pneumoperitoneum system, characterized in that: The device includes an insufflator (1) and a filter (2). The insufflator (1) has a mounting cylinder on its proximal end face. The insufflator (1) is equipped with an air curtain control module and a circulating smoke exhaust control module that are connected to the mounting cylinder. The filter (2) is detachably inserted into the mounting cylinder. The main cylinder (201) of the filter (2) is equipped with a set of independent hollow channels and a liquid collection chamber (203). The distal end of the main cylinder (201) can be optionally covered with an air curtain end cap (204) or a circulating smoke exhaust end cap (205). The set of hollow channels can be connected through the air curtain end cap (204). The air curtain control module forms an air curtain mode or can be connected to the circulating smoke exhaust control module through the circulating smoke exhaust end cap (205) to form a circulating smoke exhaust mode. The proximal end of the filter (2) can be connected to the abdominal cavity. In the circulating smoke exhaust mode, the circulating smoke exhaust control module can be connected to the abdominal cavity and the pressure measuring module through one of the hollow channels to collect the pressure signal in the abdominal cavity in real time. The bottom of the proximal end of the filter (2) is provided with a leakage valve (3) that communicates with the liquid collection chamber (203). The leakage valve (3) can discharge the liquid in the liquid collection chamber (203) when the filter (2) is working.

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