Laparoscope gas purification device

Abstract

The utility model provides a gas purification device for a laparoscope, and aims to solve the technical problems that smoke generated in an existing laparoscope operation can hinder the operation view field, and the smoke is left in an operating room and can harm the health of medical staff. The device comprises a filtering structure, the filtering structure comprises a closed filtering cavity, an inlet of the filtering cavity is communicated with a laparoscope trocar side hole through a first pipeline, and a filtering assembly is arranged in the filtering cavity; the air inlet end of the negative pressure fan is communicated with the outlet of the filtering cavity through a second pipeline; the smoke sensor is arranged on the first pipeline; the smoke sensor and the negative pressure fan are both electrically connected with the control module, and the control module receives communication data of the smoke sensor and regulates and controls the negative pressure fan. According to the utility model, smoke can be sensed and sucked in time, so that the operation view is not blocked, harmful impurities in the smoke can be fully filtered out, the gas is basically clean and harmless, and the harm of the smoke to the body of medical personnel is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a laparoscopic gas purification device. Background Art

[0002] With the rapid development of minimally invasive medicine, laparoscopic surgery has become an essential medical means in contemporary medicine. During laparoscopic surgery, a large amount of surgical smoke is generated in the body. The traditional smoke emission is directly discharged into the operating room through the side hole of the laparoscopic trocar (laparoscopic puncture trocar). On the one hand, the smoke cannot be discharged in time, and to a certain extent, the smoke will obstruct the surgical field of view; on the other hand, since the surgical smoke contains a lot of harmful components such as hydrocarbons, nitriles, fatty acids, phenols, etc., if it remains in the air of the operating room, it will cause medical staff to inhale passively for a long time, bringing serious and invisible health hazards to the medical staff. Summary of the Invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a laparoscopic gas purification device, which solves the technical problems that the smoke generated during the existing laparoscopic surgery will obstruct the surgical field of view and the smoke remaining in the operating room will endanger the health of medical staff.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A laparoscopic gas purification device includes: a filtering structure, including a closed filtering chamber, the inlet of the filtering chamber is connected to the side hole of the laparoscopic trocar through a first pipeline, and a filtering component is arranged in the filtering chamber; a negative pressure fan, its air inlet end is connected to the outlet of the filtering chamber through a second pipeline; a smoke sensor, arranged on the first pipeline; wherein, the smoke sensor and the negative pressure fan are both electrically connected to a control module, and the control module receives the communication data of the smoke sensor and regulates the negative pressure fan.

[0006] Through the setting of the smoke sensor, the utility model can timely sense the smoke in the abdominal cavity, and through the setting of the filtering structure and the negative pressure fan, the smoke generated during the operation is inhaled into the filtering structure under the action of the negative pressure fan for purification treatment. It can timely sense and suck away the smoke, ensuring that the surgical field of view is not blocked. Using the filtering structure to purify the smoke can fully filter out the harmful impurities in the smoke, making the gas basically clean and harmless. The purified gas can be introduced into the abdominal cavity again for recycling, directly avoiding the emission of smoke into the operating room and reducing the harm of smoke to the bodies of medical staff.

[0007] Optionally, a first connector is provided at the side hole of the laparoscopic trocar. The filtering chamber is formed inside the housing. An air inlet and an air outlet communicating with the filtering chamber are provided on the housing. A second connector is provided on the air inlet. One end of the first pipe is detachably connected to the first connector, and the other end is detachably connected to the second connector.

[0008] Optionally, the filtering assembly includes: a frame body disposed in the filtering chamber to separate the air inlet and the air outlet; the frame body has a V-shaped or U-shaped structure, and its open end faces the air outlet; a first filtering layer covering the outer wall of the frame body; a second filtering layer disposed in a filtering groove inside the frame body.

[0009] Optionally, the frame body includes: a fixing ring disposed in the filtering chamber; a guiding platform disposed above the fixing ring and corresponding to the air inlet; a wire mesh disposed between the fixing ring and the guiding platform; the wire mesh and the guiding platform, the fixing ring form a filtering groove, the first filtering layer covers the outer wall of the wire mesh, and the second filtering layer is disposed in the filtering groove.

[0010] Optionally, the first filtering layer is a non-woven fabric filtering layer or a filtering cotton layer or a filter paper.

[0011] Optionally, the second filtering layer is filtering cotton filled in the filtering groove.

[0012] Optionally, the top of the guiding platform is in a spire shape and has inclined surfaces on both sides.

[0013] Optionally, the housing includes a main body and an end cover detachably connected to the opening of the main body. The air inlet is provided on the end cover, and a second connector is provided on the air inlet.

[0014] Optionally, a ventilation plate is disposed in the filtering chamber. The fixing ring of the frame body is detachably connected to the ventilation plate. An air outlet is provided on the ventilation plate, and the air outlet is connected to the air inlet end of the negative pressure fan through a second pipe.

[0015] Optionally, an annular step is provided on the inner side of the top end of the main body. The inner side of the end cover corresponding to the step has a boss adapted to the step. Sealing layers are provided on the upper surface of the main body and the step.

[0016] Optionally, the ventilation plate includes a connecting portion and an outlet portion disposed at the lower end of the connecting portion and having a bowl-shaped structure. The connecting portion is threadedly connected to the fixing ring. The air outlet is disposed at the lower end of the outlet portion, and a sealing ring adapted to the shape of the outlet portion is disposed inside the outlet portion.

[0017] Optionally, a solution chamber is further provided between the filtration chamber and the negative pressure fan. The inlet of the solution chamber is communicated with the outlet of the filtration chamber, and the outlet of the solution chamber is communicated with the air inlet end of the negative pressure fan.

[0018] Optionally, the solution chamber is formed by a bottle body provided on the second pipeline. The second pipeline includes a first connecting pipe and a second connecting pipe. The first connecting pipe includes a straight section and an inclined section connected to each other. One end of the straight section is connected to the air outlet of the filtration chamber, and one end of the inclined section is communicated with the inlet of the solution chamber. One end of the second connecting pipe is communicated with the outlet of the solution chamber through a third joint, and the other end is communicated with the air inlet end of the negative pressure fan.

[0019] Optionally, a partition is provided inside the housing. The partition divides the housing into a filtration chamber and a solution chamber. The second pipeline includes a first connecting pipe and a second connecting pipe. The first connecting pipe includes a straight section and an inclined section connected to each other. One end of the straight section is connected to the air outlet of the filtration chamber, and one end of the inclined section is communicated with the inlet of the solution chamber. One end of the second connecting pipe is communicated with the outlet of the solution chamber through a third joint, and the other end is communicated with the air inlet end of the negative pressure fan.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] With the setting of the smoke sensor in the present utility model, the smoke in the abdominal cavity can be sensed in time, and through the setting of the filtration structure and the negative pressure fan, the smoke generated during the operation is sucked into the filtration structure under the action of the negative pressure fan for purification treatment. It can sense and suck away the smoke in time to ensure that the surgical field of view is not blocked. Through the first filter layer, the second filter layer or the three-layer filter body with physiological saline added, the harmful impurities in the smoke can be fully filtered, so that the discharged gas is basically clean and harmless. The purified gas can be introduced into the abdominal cavity again for recycling, directly avoiding the emission of smoke into the operating room and reducing the harm of smoke to the bodies of medical staff. Moreover, in the present utility model, the housing, the pipeline and the housing, and the filtration component and the housing are all designed as detachable structures, which can facilitate the replacement of any component. The assembly and disassembly of each component are convenient. During use, some components can be reused according to actual needs, which is beneficial to reducing the elimination rate of consumables and saving the surgical cost. At the same time, through the structure of the frame body and the setting of the first filter layer and the second filter layer provided on the outer side and the inner side of the frame body and adapted to the frame body structure, the filtration area is increased to a large extent, and the filtration effect is improved. For example, when there is too much smoke during the operation, the filtration effect can be improved, the service life of the filter layer can be prolonged, and the filtration component can be quickly replaced to ensure the filtration function of the filtration component. Description of the Drawings

[0022] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model.

[0024] Figure 2 It is a schematic structural diagram of the filtering component in the present utility model.

[0025] Figure 3 For Figure 1 the enlarged view of the structure at A in

[0026] Figure 4 It is a schematic structural diagram of Embodiment 5.

[0027] Figure 5 It is a schematic structural diagram of Embodiment 6.

[0028] Reference numerals: 1, laparoscopic trocar; 11, first joint; 2, first pipeline; 3, filtering structure; 31, housing; 311, body; 312, end cover; 3121, boss; 313, sealing layer; 31a, filtering cavity; 31b, solution cavity; 32, second joint; 33, filtering component; 331, frame; 3311, fixing ring; 3312, guide platform; 3313, wire mesh frame; 332, first filtering layer; 333, second filtering layer; 34, ventilation plate; 35, sealing ring; 4, second pipeline; 41, first connecting pipe; 42, second connecting pipe; 43, third joint; 44, mesh cover; 5, negative pressure fan; 6, smoke sensor; 7, partition board. Detailed implementation manners

[0029] In the following text, only some exemplary embodiments are briefly described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present utility model application. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0030] In the description of the embodiments of the present utility model application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "end", "side", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the embodiments of the present utility model application and for simplification, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present utility model application.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present utility model application, the meaning of "a plurality" is two or more, unless otherwise specifically and clearly defined.

[0032] In the embodiments of the present utility model application, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model application can be understood according to specific circumstances.

[0033] In the embodiments of the present utility model application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0034] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present utility model application. To simplify the disclosure of the embodiments of the present utility model application, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the embodiments of the present utility model application. In addition, the embodiments of the present utility model application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0035] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0036] Embodiment 1

[0037] As Figure 1 shown, the embodiments of the present utility model application provide a laparoscopic gas purification device, including: a laparoscopic trocar 1, a first pipeline 2, a filtering structure 3, a second pipeline 4, a negative pressure fan 5 and a smoke sensor 6.

[0038] The laparoscopic trocar 1 is connected to the inlet of the filtering structure 3 through the first pipeline 2. The negative pressure fan 5 is connected to the outlet of the filtering structure 3 through the second pipeline 4. The smoke sensor 6 is arranged on the first pipeline 2, and both the smoke sensor 6 and the negative pressure fan 5 are electrically connected to a control module. The smoke sensor 6 transmits the sensed smoke signal to the control module. The control module receives the smoke signal and regulates the opening and closing of the negative pressure fan 5.

[0039] A first joint 11 is arranged at the side hole of the laparoscopic trocar 1. One end of the first pipeline 2 is connected to the laparoscopic trocar 1 through the first joint 11.

[0040] The filtering structure 3 includes a housing 31. The interior of the housing 31 has a closed filtering chamber 31a. The housing 31 is provided with an air inlet and an air outlet that are connected to the filtering chamber 31a. A second joint 32 is hermetically connected to the air inlet. One end of the first pipeline 2 away from the laparoscopic trocar 1 is connected to the second joint 32. A filtering component 33 for filtering the flue gas is arranged in the filtering chamber 31a. The first pipeline 2, the first joint 11 and the second joint 32 are all detachably connected.

[0041] During use, when the smoke sensor 6 senses smoke in the abdominal cavity, it transmits a signal to the control module. After receiving the signal, the control module regulates the start of the micro negative pressure fan 5. Under the action of the negative pressure fan 5, the smoke generated during the operation is sucked into the filtering structure 3 for purification. The processed gas can be discharged to the outside of the operating room through the outlet end of the negative pressure fan 5 or re-introduced into the abdominal cavity for recycling. By setting the smoke sensor, the present utility model can automatically collect the smoke generated during the operation, and after being processed by the filtering structure 3, it is safely discharged or recycled. The harmful substances in the smoke are greatly reduced, air pollution is reduced, and the direct large-scale discharge of smoke with more harmful substances into the operating room is avoided.

[0042] Embodiment 2

[0043] The embodiment of the present utility model application provides a laparoscopic gas purification device. On the basis of Embodiment 1, as Figure 1 and Figure 2 shown, in this embodiment, the filtering component 33 includes: a frame body 331, a first filtering layer 332, and a second filtering layer 333.

[0044] The frame body 331 is arranged in the filtering cavity 31a to separate the air inlet and the air outlet on the housing 31. The frame body 331 is in a "V" shape or a "U" shape structure, and its open end faces the air outlet. Thus, a filtering groove is formed in the direction of the second pipeline 4 by the frame body 331. The second filtering layer 333 is arranged in the filtering groove, and the first filtering layer 332 covers the outer wall of the frame body 331 away from the filtering groove. Preferably, the frame body 331 is in a V-shaped structure, that is: the frame body 331 is gradually expanded from one end of the air inlet to the other end.

[0045] In an embodiment, the frame body 331 includes a fixing ring 3311, a guide platform 3312, and a wire frame 3313.

[0046] The guide platform 3312 is arranged above the fixing ring 3311 and is opposite to the air inlet. A wire frame 3313 is arranged between the bottom of the guide platform 3312 and the top of the fixing ring 3311. The top of the guide platform 3312 is in a pointed shape, and both sides have inclined surfaces. There is a gap between the wire frame 3313 and the inner wall of the housing 31. The wire frame 3313 and the guide platform 3312, the fixing ring 3311 form a filtering groove, and the second filtering layer 333 is arranged in this filtering groove. The first filtering layer 332 covers the outer wall of the wire frame 3313.

[0047] Optionally, the first filtering layer 332 is a non-woven fabric filtering layer or a filtering cotton layer or a filter paper.

[0048] Optionally, the structure of the second filter layer 333 is adapted to the structure of the filter tank, that is, the second filter layer 333 has a "V-shaped" or "U-shaped" cross-section, and the second filter layer 333 at least coincides with the wire frame 3313, as shown in the attached Figure 2 As shown, the outer wall of the second filter layer 333 is attached to the inner wall of the wire frame 3313, and there is a gap between the bottom of the second filter layer 333 and the air outlet. In other embodiments, the second filter layer 333 can also coincide with the wire frame 3313 and the fixing ring 3311, that is, the outer wall of the second filter layer 333 is attached to the inner walls of the wire frame 3313 and the fixing ring 3311.

[0049] Optionally, the second filter layer 333 is made of filter cotton filled in the filter tank, preferably activated carbon filter cotton or glass fiber filter cotton.

[0050] Embodiment 3

[0051] Based on Embodiment 2, as shown in Figures 1 to 3 As shown, the housing 31 includes a body 311 with an opening at the top end, and an end cap 312 detachably connected to the opening. In this embodiment, an air inlet is provided on the end cap 312, the second joint 32 is connected to the air inlet, one end of the first pipe 2 is connected to the first joint 11 at the side hole of the laparoscopic trocar 1, and the other end is connected to the second joint 32. A one-way valve can be provided on the first pipe 2.

[0052] Optionally, an annular step is provided on the inner side of the top end of the body 311, the inner side of the end cap 312 corresponding to the step has a boss 3121 adapted to the step, and a sealing layer 313 is provided on the upper surface and the step of the body 311. During use, after the boss 3121 of the end cap 312 is connected to the annular step, the lower surface of the boss 3121 abuts against the sealing layer 313 at the step, and the lower surface of the end cap 312 outside the boss 3121 abuts against the sealing layer 313 on the upper surface of the body 311.

[0053] Optionally, the outer wall of the boss 3121 and the inner wall of the body 311 above the step can be connected by threads, that is: the outer wall of the boss 3121 has external threads, and the inner wall of the body 311 above the step has internal threads adapted to the external threads.

[0054] Embodiment 4

[0055] Based on Embodiment 2 or Embodiment 3, as shown in Figures 1 to 3 As shown, the frame 331 is detachably arranged in the filter chamber 31a.

[0056] Inside the housing 31, there is a closed cavity. Inside the cavity, there is a ventilation plate 34. The ventilation plate 34 divides the cavity into an upper chamber and a lower chamber. The upper chamber is the filtration chamber 31a. The ventilation plate 34 is provided with an air outlet, which is the air outlet of the filtration chamber 31a. The air outlet is connected to the intake end of the negative pressure fan 5 through the second pipe 4.

[0057] Optionally, the ventilation plate 34 includes a connecting portion and an outlet portion provided at the lower end of the connecting portion and having a bowl-shaped structure. The air outlet is provided at the lower end of the outlet portion.

[0058] Optionally, a sealing ring 35 adapted to the shape of the outlet portion is provided inside the outlet portion. The fixing ring 3311 at the lower end of the frame 331 abuts against the top of the sealing ring 35. One end of the second pipe 4 away from the negative pressure fan 5 passes through the air outlet and is located inside the sealing ring 35.

[0059] Optionally, the inner wall of the connecting portion is provided with internal threads, and the outer wall of the fixing ring 3311 has external threads adapted to the internal threads. During use, the fixing ring 3311 is connected to the ventilation plate 34 by screwing the external threads and the internal threads together.

[0060] As an implementation scenario, in this scenario, refer to Figure 1 As shown, the negative pressure fan 5 is arranged in the lower chamber, and its intake end is connected to one end of the second pipe 4. Arranging the negative pressure fan 5 inside the housing 31 can save space and facilitate use.

[0061] As another implementation scenario, in this scenario, the negative pressure fan 5 is arranged outside the housing 31, and its intake end is connected to one end of the second pipe 4.

[0062] Embodiment 5

[0063] The embodiment of the present utility model application provides a laparoscopic gas purification device. As Figure 4 shown, in this embodiment, the gas purification device further includes a solution chamber 31b. The solution chamber 31b can be arranged between the filtration chamber 31a and the negative pressure fan 5. The inlet of the solution chamber 31b is connected to the outlet of the filtration chamber 31a, and the outlet end of the solution chamber 31b is connected to the inlet end of the negative pressure fan 5.

[0064] In this embodiment, the solution chamber 31b is formed by a bottle body arranged on the second pipe, that is, the bottle body is filled with physiological saline inside, thereby forming a closed solution chamber 31b. Specifically, the second pipe 4 includes a first connecting pipe 41 and a second connecting pipe 42. One end of the first connecting pipe 41 is connected to the outlet of the filtration chamber 31a, and the other end is connected to the inlet of the solution chamber 31b. One end of the second connecting pipe 42 is connected to the outlet of the solution chamber 31b, and the other end is connected to the inlet of the negative pressure fan 5.

[0065] Optionally, a third connector 43 is provided at the top outlet of the bottle body, and the end of the second connecting pipe 42 away from the negative pressure fan 5 is connected to the outlet of the solution chamber 31b through the third connector 43.

[0066] Optionally, the first connecting pipe 41 includes a connected straight section and an inclined section. One end of the straight section is connected to the air outlet of the filtering chamber 31a, and one end of the inclined section is connected to the lower side wall of the bottle body. The inclined section is inclined downward from the straight section towards the bottle body. The smoke enters obliquely, which can weaken the reflux eddy current and extend the contact time between the smoke and the physiological saline.

[0067] Optionally, a wire mesh 44 is provided at the end of the connection between the first connecting pipe 41 and the bottle body, which serves to distribute the airflow.

[0068] Optionally, the outlet of the negative pressure fan 5 can be re-input into the patient's abdominal cavity through an exhaust pipe, or the outlet of the negative pressure fan 5 is discharged into a collection device through an exhaust pipe.

[0069] Optionally, the housing 31 and the filtering component 33 can adopt the housing 31 and the filtering component 33 described in Embodiment 2 or Embodiment 3, that is: the housing 31 is detachably arranged, and the filtering component 33 is also detachably arranged with the housing 31.

[0070] Optionally, a drain valve can also be provided on the bottle body, and the physiological saline in the solution chamber 31b can be discharged by opening the end cap or the drain pipe.

[0071] During use, the solution chamber 31b is filled with physiological saline. During the operation, when the smoke sensor senses that there is smoke in the abdominal cavity, it transmits a signal to the control module. After receiving the signal, the control module regulates and controls the negative pressure fan 5 to start. Under the action of the negative pressure fan 5, the smoke generated during the operation enters the filtering chamber 31a through the first pipe 2, is first filtered by the filtering component 33, and then enters the solution chamber 31b through the first connecting pipe 41 and is absorbed by the physiological saline. Combining the filtering component 33 and the physiological saline to process the smoke can absorb the harmful substances in the gas to the greatest extent and avoid the direct large amount of smoke emission into the operating room to pollute the air.

[0072] Embodiment 6

[0073] The embodiment of the present utility model application provides a laparoscopic gas purification device, as Figure 5 shown. In this embodiment, the gas purification device further includes a solution chamber 31b. The solution chamber 31b can be arranged between the filtering chamber 31a and the negative pressure fan 5. The inlet of the solution chamber 31b is connected to the outlet of the filtering chamber 31a, and the outlet end of the solution chamber 31b is connected to the inlet end of the negative pressure fan 5.

[0074] In this embodiment, a partition 7 is arranged inside the housing 31. The partition 7 divides the housing 31 into a filtering chamber 31a and a solution chamber 31b. The solution chamber 31b is filled with physiological saline. In this embodiment, by arranging the filtering chamber 31a and the solution chamber 31b inside the housing 31, it is possible to absorb harmful substances in the gas to the greatest extent while saving the device space and facilitating use.

[0075] As an implementation scenario, in this scenario, the negative pressure fan 5 is arranged outside the housing 31. The second pipeline 4 includes a first connecting pipe 41 and a second connecting pipe 42. One end of the first connecting pipe 41 is communicated with the outlet of the filtering chamber 31a, and the other end is communicated with the inlet of the solution chamber 31b. One end of the second connecting pipe 42 is communicated with the outlet of the solution chamber 31b, and the other end is communicated with the inlet of the negative pressure fan 5.

[0076] Optionally, a third joint 43 is arranged at the top of the filtering chamber 31a. The end of the second connecting pipe 42 far from the negative pressure fan 5 is communicated with the outlet of the solution chamber 31b through the third joint 43, that is: in this embodiment, two joints are arranged on the end cover 312 at the top of the housing 31. Both the second connecting pipe 42 and the third joint 43 are detachably connected.

[0077] Optionally, the first connecting pipe 41 is located in the lower chamber of the filtering chamber 31a. The first connecting pipe 41 includes a connected straight section and an inclined section. One end of the straight section is connected to the air outlet of the filtering chamber 31a, and one end of the inclined section is connected to the lower side wall of the partition 7. The inclined section is inclined downward from the straight section towards the bottle body. The smoke enters obliquely, which can weaken the backflow eddy current and prolong the contact time between the smoke and the physiological saline.

[0078] Optionally, a wire mesh 44 is arranged at the end of the first connecting pipe 41 at the connection with the solution chamber 31b, which plays a role in air flow distribution.

[0079] Optionally, the outlet of the negative pressure fan 5 can be re-input into the patient's abdominal cavity through an exhaust pipeline, or the outlet of the negative pressure fan 5 can be discharged into a collection device through an exhaust pipeline.

[0080] Optionally, the housing 31 and the filtering component 33 can adopt the housing 31 and the filtering component 33 described in Embodiment 2 and Embodiment 3, that is: the housing 31 is detachably arranged, and the filtering component 33 is also detachably arranged with the housing 31.

[0081] Optionally, a drain valve can also be arranged on the bottle body. The physiological saline in the solution chamber 31b can be discharged by opening the end cover or the drain pipe.

[0082] During use, the solution chamber 31b is filled with physiological saline. During the operation, when the smoke sensor senses smoke in the abdominal cavity, it transmits a signal to the control module. After receiving the signal, the control module regulates the negative pressure fan 5 to start. Under the action of the negative pressure fan 5, the smoke generated during the operation enters the filtration chamber 31a through the first pipeline 2, is first filtered by the filtration component 33, and then enters the solution chamber 31b through the first connecting pipe 41 and is absorbed by the physiological saline. The gas after two treatments can be discharged to the outside of the operating room through the outlet end of the negative pressure fan 5 or re-introduced into the abdominal cavity for recycling.

[0083] As another implementation scenario, in this scenario, the negative pressure fan 5 is arranged in the lower chamber of the filtration chamber 31a, that is: the intake end of the negative pressure fan 5 is connected to the outlet of the filtration chamber 31a, and its outlet end is connected to the inlet of the solution chamber 31b. Refer to the appendix Figure 4 , this scenario can be understood as: the negative pressure fan 5 is arranged on the straight pipe section of the first connecting pipe 41, and the second connecting pipe 42 is an exhaust pipe or a circulation pipe. During use, under the action of the negative pressure fan 5, the smoke generated during the operation enters the filtration chamber 31a through the first pipeline 2, is first filtered by the filtration component 33, and then enters the solution chamber 31b through the first connecting pipe 41 and is absorbed by the physiological saline. The gas after two treatments can be discharged to the outside of the operating room through the second connecting pipe 42 or re-introduced into the abdominal cavity for recycling.

[0084] The parts not described in detail in this embodiment are well-known technologies in the art.

[0085] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claimed rights.

Claims

1. A laparoscopic gas purification device, characterized in that: include: The filtering structure (3) comprises a closed filtering cavity (31a), the inlet of the filtering cavity (31a) being connected to the side hole of the laparoscope puncture card (1) through a first pipe (2), and a filtering component (33) being arranged in the filtering cavity (31a); A negative pressure fan (5), the air inlet end of which is connected to the outlet of the filter chamber (31a) via a second pipe (4); A smoke sensor (6) is arranged on the first pipe (2); The smoke sensor (6) and the negative pressure fan (5) are both electrically connected to a control module, and the control module receives communication data from the smoke sensor (6) and regulates the negative pressure fan (5).

2. The laparoscopic gas purification device according to claim 1, characterized in that: A first joint (11) is provided at the side hole on the laparoscope puncture card (1); the filter cavity (31a) is formed inside the shell (31); an air inlet and an air outlet in communication with the filter cavity (31a) are provided on the shell (31); a second joint (32) is provided on the air inlet; one end of the first pipeline (2) is detachably connected to the first joint (11); and the other end is detachably connected to the second joint (32).

3. The laparoscopic gas purification device according to claim 2, characterized in that: The filtering component (33) comprises: A frame (331) is arranged in the filter cavity (31a) to separate the air inlet and the air outlet; The frame (331) is in a V-shaped or U-shaped structure, with its open end facing the air outlet; A first filter layer (332) covering the outer wall of the frame (331); The second filter layer (333) is arranged in the filter tank inside the frame (331).

4. The laparoscopic gas purification device according to claim 3, characterized in that: The frame (331) comprises: A fixing ring (3311) is arranged in the filter cavity (31a); A guide platform (3312) is arranged above the fixing ring (3311) and corresponds to the air inlet; A grid frame (3313) is provided between the fixing ring (3311) and the guide platform (3312); The grid frame (3313), the guide platform (3312) and the fixing ring (3311) form a filter tank; the first filter layer (332) covers the outer wall of the grid frame (3313); and the second filter layer (333) is arranged in the filter tank.

5. The laparoscopic gas purification device according to claim 3, characterized in that: The first filter layer (332) is a non-woven filter layer, a filter cotton layer, or a filter paper; And / or, the second filter layer (333) is filter cotton filled in the filter tank.

6. The laparoscopic gas purification device according to claim 3, characterized in that: The housing (31) comprises a body (311) and an end cover (312) detachably connected to an opening of the body (311); an air inlet is provided on the end cover (312); and a second joint (32) is provided on the air inlet; And / or, a ventilation plate (34) is provided in the filter cavity (31a), the frame (331) and the ventilation plate (34) are detachably connected, an air outlet is provided on the ventilation plate (34), and the air outlet is connected to the air inlet end of the negative pressure fan (5) through a second pipe (4).

7. The laparoscopic gas purification device according to claim 6, characterized in that: An annular step is provided on the inner side of the top end of the body (311), and a boss (3121) matching the step is provided on the inner side of the end cover (312) corresponding to the step. A sealing layer (313) is provided on the upper surface of the body (311) and the step.

8. The laparoscopic gas purification device according to claim 6, characterized in that: The vent plate (34) comprises a connecting portion and an outlet portion in a bowl-shaped structure arranged at the lower end of the connecting portion, the connecting portion being threadedly connected to a fixing ring (3311) of the frame (331), the air outlet being arranged at the lower end of the outlet portion, and a sealing ring (35) matching the shape of the outlet portion being arranged inside the outlet portion.

9. The laparoscopic gas purification device according to any one of claims 2 to 8, characterized in that: A solution chamber (31b) is further provided between the filter chamber (31a) and the negative pressure fan (5); the inlet of the solution chamber (31b) is connected to the outlet of the filter chamber (31a); and the outlet of the solution chamber (31b) is connected to the air inlet end of the negative pressure fan (5).

10. The laparoscopic gas purification device according to claim 9, characterized in that: Features: The solution chamber (31b) is formed by a bottle body arranged on the second pipe (4); the second pipe (4) comprises a first connecting pipe (41) and a second connecting pipe (42); the first connecting pipe (41) comprises a straight section and an inclined section connected to each other; one end of the straight section is connected to the air outlet of the filter chamber (31a); one end of the inclined section is connected to the inlet of the solution chamber (31b); one end of the second connecting pipe (42) is connected to the outlet of the solution chamber (31b) via a third joint (43); and the other end is connected to the air inlet of the negative pressure fan (5); or, A partition (7) is provided inside the shell (31), and the partition (7) divides the inside of the shell (31) into a filter chamber (31a) and a solution chamber (31b). The second pipeline (4) comprises a first connecting pipe (41) and a second connecting pipe (42). The first connecting pipe (41) comprises a straight section and an inclined section connected to each other. One end of the straight section is connected to the outlet of the filter chamber (31a), and one end of the inclined section is connected to the inlet of the solution chamber (31b). One end of the second connecting pipe (42) is connected to the outlet of the solution chamber (31b) via a third joint (43), and the other end is connected to the air inlet of the negative pressure fan (5).

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