Laparoscopic fogger

Abstract

This invention proposes a laparoscopic defogger, comprising a sheath, a four-way connector, and a negative pressure device. The sheath has a lumen for placing the laparoscope, with both axial ends of the lumen open. The first port of the four-way connector communicates with the lumen, the second port communicates with an insufflator, and the third port communicates with a trocar. The negative pressure device communicates with the fourth port. Air from the insufflator and air from the negative pressure device are introduced into the sheath through the four-way connector. When using the laparoscope, the laparoscope is inserted into the lumen, the second port is connected to the insufflator, and the third port is connected to the trocar. The insufflator is then turned on, and the sheath is inserted into the abdominal cavity through the trocar. At this time, the air from the insufflator blows across the surface of the laparoscope lens, preventing fogging. After the laparoscope has adapted to the intra-abdominal environment, the air supply to the lens can be turned off, and the negative pressure device can be turned on. The negative pressure device draws out the smoke from the lens, reducing the adverse effects of smoke on the lens's field of vision and improving the visual quality during surgery.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and in particular to a laparoscopic defogging device. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] During laparoscopic surgery, the temperature and humidity difference between the operating room and the patient's abdominal cavity can cause the laparoscope to fog up upon entry, resulting in blurred vision. Furthermore, the use of electrocautery during surgery generates smoke, which can also obscure the laparoscope lens, affecting the surgeon's field of vision and making it difficult to identify surgical targets, thus impacting surgical efficiency and safety. Frequent manual removal of the laparoscope for cleaning the lens interrupts the surgery, causing inconvenience to both the patient and the surgeon. Utility Model Content

[0004] The purpose of this invention is to at least solve the technical problem of poor visualization during laparoscopic surgery. This purpose is achieved through the following technical solution:

[0005] This utility model proposes a laparoscopic defogger, comprising:

[0006] A sheath having a lumen for placing a laparoscope, the lumen being open at both axial ends;

[0007] The four-way connector has a first interface, a second interface, a third interface and a fourth interface. The first interface is connected to the lumen, the second interface is used to connect to the pneumoperitoneum machine, and the third interface is used to connect to the puncture device.

[0008] The negative pressure device is connected to the fourth interface.

[0009] The laparoscopic defogger proposed in this invention uses a four-way connector to introduce the air output from the insufflator and the suction air from the negative pressure device into the sheath. When using the laparoscope, the laparoscope is inserted into the lumen, the second interface is connected to the insufflator, and the third interface is connected to the trocar. The insufflator is then turned on, and the sheath is inserted into the abdominal cavity through the trocar. At this time, the air from the insufflator is blown out from the end of the sheath in the abdominal cavity, simultaneously blowing over the surface of the laparoscope lens to prevent fogging. After the laparoscope has adapted to the intra-abdominal environment, the air supply to the lens can be turned off, and the negative pressure device can be turned on. The negative pressure device draws out the smoke from the lens, reducing the adverse effects of smoke on the lens's field of vision and improving the visual quality during surgery.

[0010] In addition, the laparoscopic defogger according to this utility model may also have the following additional technical features:

[0011] In some embodiments of this utility model, the four-way connector defines a first channel and a second channel, both of which extend straight. The first channel is perpendicularly connected to and communicates with the second channel. The two ends of the first channel form the first interface and the second interface, and the two ends of the second channel form the third interface and the fourth interface.

[0012] In some embodiments of this utility model, the laparoscopic defogger further includes an air extraction tube and a tube cap. The fourth interface is connected to the negative pressure device through the air extraction tube. The air extraction tube is detachably connected to the fourth interface. The tube cap is disposed on the fourth interface and is used to close or open the fourth interface.

[0013] In some embodiments of this utility model, the laparoscopic defogger further includes a connecting device and a trachea. The connecting device is located at one axial end of the sheath and defines a penetration cavity within it. The penetration cavity is coaxially arranged with and communicates with the lumen. The end of the penetration cavity facing away from the lumen along its own axial direction is provided with a penetration port for inserting the laparoscope. A connection port is provided on the periphery of the penetration cavity. One end of the trachea is connected to the first port, and the other end of the trachea is connected to the connection port.

[0014] In some embodiments of this utility model, the laparoscopic defogger further includes a locking assembly, which is movably connected to the connecting device. The locking assembly has a first position and a second position in the direction of movement. In the first position, the locking assembly is used to restrict the axial movement of the laparoscope along the perforation cavity. In the second position, the locking assembly releases the restriction on the axial movement of the laparoscope along the perforation cavity.

[0015] In some embodiments of this utility model, the sheath further defines a plurality of air passages, which are spaced apart on the outer periphery of the cavity and communicate with the cavity. The air passages extend axially along the cavity, and the axial ends of the air passages communicate with the outside at the end of the sheath away from the connecting device.

[0016] In some embodiments of this utility model, the laparoscopic defogger further includes an air guiding structure, which is disposed at the end of the sheath away from the connecting device. The air guiding structure is used to drive the air outlet of the air passage to flow towards the lens of the laparoscope.

[0017] In some embodiments of this utility model, the end face of the sheath facing away from the connecting device is set at an angle to the axial direction of the sheath.

[0018] In some embodiments of this utility model, the connecting device is further provided with a fork-shaped mounting structure, and the fork-shaped mounting structure is provided with a mounting groove for fixing the light source of the laparoscope.

[0019] In some embodiments of this utility model, the laparoscopic defogger further includes a suction line, the negative pressure device and the fourth interface are connected through the suction line, and the laparoscopic defogger further includes a flow regulator, which is disposed on the suction line and used to regulate the flow rate of the suction line. Attached Figure Description

[0020] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0021] Figure 1 A schematic diagram of the structure of a laparoscopic defogger according to an embodiment of the present invention is shown.

[0022] Figure 2 A schematic cross-sectional view of the sheath along the radial direction of the lumen is shown according to an embodiment of the present invention.

[0023] Figure 3 A schematic cross-sectional view of the sheath along the axial direction of the lumen is shown according to an embodiment of the present invention.

[0024] Figure 4 A schematic cross-sectional view of the connecting device according to an embodiment of the present invention is shown.

[0025] Figure 5 A schematic diagram of the structure of a laparoscopic defogger (without lens purging function) according to an embodiment of the present invention is shown.

[0026] The attached figures are labeled as follows:

[0027] 10. Sheath; 11. Lumen; 12. Vent hole; 13. Air guiding structure;

[0028] 20. Four-way connector; 21. First interface; 22. Second interface; 23. Third interface; 24. Fourth interface; 25. Pipe cap;

[0029] 30. Connecting device; 31. Air tube; 32. Through-hole; 33. Through-port; 34. Connection port; 35. Locking assembly; 36. Fork-shaped mounting structure; 37. Perforation;

[0030] 40. Negative pressure device; 41. Suction pipe; 42. Flow regulating component;

[0031] 50. Insufflator;

[0032] 60. Puncture instrument. Detailed Implementation

[0033] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0034] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0035] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0036] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0037] like Figures 1 to 4 As shown, this utility model proposes a laparoscopic defogger, comprising:

[0038] The sheath 10 has a lumen 11 for placing a laparoscope, with both ends of the lumen 11 being open.

[0039] The four-way connector 20 has a first interface 21, a second interface 22, a third interface 23 and a fourth interface 24. The first interface 21 is connected to the lumen 11, the second interface 22 is used to connect to the pneumoperitoneum machine 50, and the third interface 23 is used to connect to the puncture device 60.

[0040] The negative pressure device 40 is connected to the fourth interface 24.

[0041] As can be seen, the laparoscopic defogger proposed in this utility model introduces the air output from the insufflator 50 and the suction air from the negative pressure device 40 into the sheath 10 through the four-way connector 20. When using the laparoscope, the laparoscope is inserted into the lumen 11, then the second interface 22 is connected to the insufflator 50, and the third interface 23 is connected to the trocar 60. Then, the insufflator 50 is turned on, and the sheath 10 is inserted into the abdominal cavity through the trocar 60. At this time, the air output from the insufflator 50 is blown out from the end of the sheath 10 located in the abdominal cavity, and at the same time blown over the surface of the laparoscope lens to prevent the lens from fogging. After the laparoscope adapts to the intra-abdominal environment, the air blowing to the lens can be turned off, and the negative pressure device 40 can be turned on. The negative pressure device 40 sucks out the smoke from the lens, reducing the adverse effect of smoke on the lens field of view and improving the visual quality during surgery.

[0042] For example, the sheath 10 can be a straight tube structure, such as a straight metal tube, with a straight lumen 11 inside. The diameter of the lumen 11 is slightly larger than the outer diameter of the laparoscope. Both ends of the lumen 11 are open, allowing the laparoscope to enter the sheath 10 from one end of the lumen 11 without obstructing the laparoscope's view at the other end. Airflow is blown out under the action of the insufflator 50, or smoke is inhaled under the action of the negative pressure device 40. The four-way connector 20 can be a cross-shaped or K-shaped connector. The four ports of the four-way connector 20 can be connected to the lumen 11, the insufflator 50, the trocar 60, and the negative pressure device 40 respectively via flexible tubes. The generation of airflow and inhalation can be controlled according to actual needs to ensure the laparoscope's view. The insufflator 50 can be a conventional insufflator 50, which establishes a pneumoperitoneum environment by blowing air, facilitating the determination of the surgical target during surgery. The negative pressure device 40 can be a conventional surgical negative pressure device 40, which establishes a negative pressure environment through equipment such as a centrifugal pump or a fan, and extracts the gas through the pipeline.

[0043] In some embodiments of this utility model, the four-way connector 20 defines a first channel and a second channel, both of which extend straight. The two ends of the first channel are perpendicularly connected and communicate with the two ends of the second channel. The two ends of the first channel form a first interface 21 and a second interface 22, and the two ends of the second channel form a third interface 23 and a fourth interface 24.

[0044] As can be seen, the four-way connector 20 connects the tubing to the lumen 11, the insufflator 50, the trocar 60, and the negative pressure device 40, respectively. This allows the air from the insufflator 50 to enter the lumen 11 through the four-way connector 20 and the associated tubing, and exit at the distal end of the lumen 11, reducing fogging of the laparoscope lens. The negative pressure device 40 establishes a negative pressure environment, drawing out smoke from in front of the laparoscope lens along the four-way connector 20 and the associated tubing, improving the quality of the lens's field of vision. The four-way connector 20 has a compact structure, facilitating the installation of tubing.

[0045] For example, the four-way connector 20 can be a cross-shaped connector integrally molded from plastic, defining a first channel and a second channel extending in a straight line inside. The middle part of the first channel is perpendicularly connected to and communicates with the second channel. The first channel and the second channel can be cylindrical, with four protruding parts being a first interface 21, a second interface 22, a third interface 23, and a fourth interface 24, respectively. These four interfaces are cylindrical, and their diameter is slightly larger than the inner diameter of the connecting hose, making the connection more reliable.

[0046] In some embodiments of this utility model, the laparoscopic defogger further includes an air extraction tube 31 and a tube cap 25. The fourth interface 24 is connected to the negative pressure device 40 through the air extraction tube 31. The air extraction tube 31 is detachably connected to the fourth interface 24. The tube cap 25 is located on the fourth interface 24 and is used to close or open the fourth interface 24.

[0047] As can be seen, by detachably connecting the suction pipe 31 of the negative pressure device 40 to the fourth interface 24, the suction pipe 31 can be removed, thereby allowing the suction pipe 31 to be disconnected from the fourth interface 24 when it is not needed, and the fourth interface 24 to be sealed with the pipe cap 25, thus improving ease of use.

[0048] For example, the suction tube 31 can be a flexible tube that is detachably connected to the fourth interface 24 by plugging and unplugging. The tube cap 25 can be a plug structure that closes or opens the fourth interface 24 by plugging and unplugging. The tube cap 25 can be cylindrical with a diameter between the outer and inner diameters of the fourth interface 24, so that the tube cap 25 can be reliably inserted into the fourth interface 24. The tube cap 25 can also be tied to the four-way connector 20 by a collar or rope to prevent loss.

[0049] In some embodiments of this utility model, the laparoscopic defogger further includes a connecting device 30 and a trachea 31. The connecting device 30 is located at one axial end of the sheath 10. A penetration cavity 32 is defined within the connecting device 30. The penetration cavity 32 is coaxially arranged and communicates with the lumen 11. A penetration port 33 is provided at one end of the penetration cavity 32 away from the lumen 11 along its own axial direction. The penetration port 33 is used for the insertion of the laparoscope. A connection port 34 is provided on the periphery of the penetration cavity 32. One end of the trachea 31 is connected to the first interface 21, and the other end of the trachea 31 is connected to the connection port 34.

[0050] As can be seen, the connecting device 30 facilitates the connection between the trachea 31 and the sheath 10. A through-hole 32 is formed within the connecting device 30, and the through-hole 32 extends in a straight line. During use, the laparoscope is inserted into the connecting device 30 through the through-hole 33 and enters the lumen 11. Then, the trachea 31 is connected to the through-hole 32 through the connecting port 34, allowing air to be introduced from the pneumoperitoneum machine 50 and air to be drawn from the negative pressure device 40.

[0051] In some embodiments of the present invention, the laparoscopic defogger further includes a locking assembly 35, which is movably connected to the connecting device 30. The locking assembly 35 has a first position and a second position in the direction of movement. In the first position, the locking assembly 35 is used to restrict the axial movement of the laparoscope along the connecting cavity 32. In the second position, the locking assembly 35 releases the restriction on the axial movement of the laparoscope along the connecting cavity 32.

[0052] As can be seen, by setting the locking component 35 to clamp or abut the laparoscope, the laparoscope is limited, so that the relative position between the laparoscope and the sheath 10 is kept fixed, thereby improving the stability of the laparoscope during use.

[0053] For example, the locking assembly 35 can have various structural forms. For instance, a perforation 37 can be provided on the side of the sheath 10. The locking structure includes a locking pin, which is screwed into the perforation 37. Tightening the locking pin will bring the end of the locking pin into contact with the laparoscope inside the sheath 10, thus limiting the laparoscope's position. The locking assembly 35 can also be an annular structure with a conical barrel portion. The inner diameter of the conical barrel portion is smaller than the diameter of the laparoscope inserted into it. The proximal end of the lumen 11 is conical, with the large-diameter end open. The locking assembly 35 is screwed to the sheath 10. Tightening the sheath 10 causes the conical barrel portion to move along the conical portion of the lumen 11 towards the proximal end of the lumen 11. The conical proximal end of the lumen 11 presses against the locking assembly 35, which in turn presses against the laparoscope, thereby limiting the laparoscope's position.

[0054] In some embodiments of this utility model, at least one air passage hole 12 is defined inside the sheath 10. The air passage holes 12 are spaced apart on the outer periphery of the cavity 11 and communicate with the cavity 11. The air passage holes 12 extend along the axial direction of the cavity 11, and the axial end of the air passage hole 12 communicates with the outside at the end of the sheath 10 away from the connecting device 30.

[0055] As can be seen, by providing an air passage 12 inside the sheath 10, the airflow from the pneumoperitoneum machine 50 can flow through the air passage 12 to the laparoscope lens, thereby reducing lens fogging. Furthermore, the negative pressure device 40 can also draw away smoke from the lens through the air passage 12, expanding the fog-absorbing area.

[0056] For example, the vent 12 can be a cylindrical or oblong hole, formed in the wall of the sheath 10. The vent 12 extends axially along the sheath 10 and communicates with the outside at the distal end of the sheath 10. The vent 12 can communicate with the lumen 11, so that the air tube 31 communicating with the lumen 11 communicates with the vent 12. The vent 12 can also be independently connected to the air tube 31 to form an air passage. Multiple vents 12 can be arranged at intervals along the circumference of the sheath 10 to achieve air outlet demisting and air intake demisting at multiple locations.

[0057] In some embodiments of this utility model, the laparoscopic defogger further includes an air guiding structure 13, which is disposed at one end of the sheath 10 away from the connecting device 30. The air guiding structure 13 is used to drive the air outlet of the air passage 12 to flow towards the lens of the laparoscopic lens.

[0058] As can be seen, by setting the air guiding structure 13 to guide the airflow to the lens of the laparoscope, the air output of the insufflator 50 flows through the lens of the laparoscope, thereby improving the defogging effect.

[0059] For example, the air guiding structure 13 can be an air guiding plate disposed at the distal end of the sheath 10. The air guiding plate is set at an angle to the axis of the sheath 10, so that the outgoing air impacts the air guiding plate and blows towards the laparoscope lens, thereby achieving the defogging effect. Specifically, the air guiding plate can be integrally formed with the sheath 10 and partially cover the distal opening of the lumen 11.

[0060] In some embodiments of this utility model, the end face of the sheath 10 facing away from the connecting device 30 is set at an angle to the axial direction of the sheath 10.

[0061] As can be seen, by setting the distal end of the sheath 10 at an angle, it can accommodate the lenses of laparoscopy at different angles. Lenses at different angles make it easier for doctors to observe the surgical site from different angles, thus improving the convenience of operation.

[0062] For example, the end face into which the sheath 10 extends can be at 30° or 45° to the axis of the sheath 10, so that laparoscopic lenses at different angles can be matched with its angle, thereby improving the adaptability of the sheath 10.

[0063] In some embodiments of this utility model, the connecting device 30 is further provided with a fork-shaped mounting structure 36, and the fork-shaped mounting structure 36 is provided with a mounting groove for fixing the light source of the laparoscope.

[0064] As can be seen, by setting a fork-shaped mounting structure 36 on the connecting device 30, the light source of the laparoscope can be fixed in the mounting groove, which can achieve the effect of fixing the light source of the laparoscope.

[0065] For example, the fork-shaped mounting structure 36 can be integrally formed with the connecting device 30, or it can be set separately and connected to the connecting device 30 by snap-fit. The fork-shaped mounting structure 36 has a U-shaped mounting groove that is adapted to the shape of the light source of the laparoscope, so that the light source can be snap-fitted and fixed in the laparoscope, thereby improving the reliability of the laparoscope during use.

[0066] In some embodiments of this utility model, the laparoscopic defogger further includes a suction line 41, the negative pressure device 40 and the fourth interface 24 are connected through the suction line 41, and the laparoscopic defogger further includes a flow regulating component 42, which is disposed on the suction line 41 and used to regulate the flow rate of the suction line 41.

[0067] It can be seen that by setting the flow regulating component 42 to adjust the suction force of the negative pressure device 40, the flexibility of its use is improved.

[0068] For example, the flow regulating component 42 can be a regulating valve provided on the suction pipeline 41, and the suction force of the negative pressure device 40 can be adjusted by adjusting the opening degree of the regulating valve.

[0069] Additionally, if the established pneumoperitoneum collapses after the laparoscopic defroster, insufflator 50, and trocar 60 (with the air inlet valve closed), another insufflator can be connected via the fourth interface 24 to increase air intake and maintain the pneumoperitoneum environment.

[0070] like Figure 5 As shown, in some embodiments of this utility model, the laparoscopic defogger can also eliminate the air outlet at the distal end of the sheath 10 for blowing the laparoscope. Correspondingly, the four-way connector 20 connecting the sheath 10 and the insufflator 50 can be replaced with a three-way connector, and the second interface 22 can be eliminated, so that the laparoscopic defogger only retains the function of the negative pressure device 40 for suction to remove smoke, which can also play a beneficial role in improving the clarity of the field of vision during laparoscopic surgery.

[0071] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A laparoscopic defogger characterized by, include: A sheath having a lumen for placing a laparoscope, the lumen being open at both axial ends; The four-way connector has a first interface, a second interface, a third interface and a fourth interface. The first interface is connected to the lumen, the second interface is used to connect to the pneumoperitoneum machine, and the third interface is used to connect to the puncture device. The negative pressure device is connected to the fourth interface.

2. The laparoscopic defogger according to claim 1, characterized in that, The four-way connector defines a first channel and a second channel, both of which extend straight. The first channel is perpendicularly connected to and communicates with the second channel. The two ends of the first channel form the first interface and the second interface, and the two ends of the second channel form the third interface and the fourth interface.

3. The laparoscopic defogger according to claim 2, wherein, The laparoscopic defogger also includes an air extraction tube and a tube cap. The fourth port is connected to the negative pressure device through the air extraction tube. The air extraction tube is detachably connected to the fourth port. The tube cap is located at the fourth port and is used to close or open the fourth port.

4. The laparoscopic defogger according to claim 1, characterized in that, The laparoscopic defrost device also includes a connecting device and a trachea. The connecting device is located at one axial end of the sheath and defines a penetration cavity. The penetration cavity is coaxially arranged and communicates with the lumen. The end of the penetration cavity away from the lumen along its own axis is provided with a penetration port for inserting the laparoscope. A connection port is provided on the periphery of the penetration cavity. One end of the trachea is connected to the first port, and the other end of the trachea is connected to the connection port.

5. The laparoscopic defogger according to claim 4, wherein, The laparoscopic defogger also includes a locking assembly, which is movably connected to the connecting device. The locking assembly has a first position and a second position in the direction of movement. In the first position, the locking assembly restricts the axial movement of the laparoscope along the perforation cavity. In the second position, the locking assembly releases the restriction on the axial movement of the laparoscope along the perforation cavity.

6. The laparoscopic defogger according to claim 4, wherein The sheath also defines a plurality of air passages, which are spaced apart on the outer periphery of the cavity and communicate with the cavity. The air passages extend along the axial direction of the cavity, and the axial ends of the air passages communicate with the outside at the end of the sheath away from the connecting device.

7. The laparoscopic defogger according to claim 6, wherein The laparoscopic defogger also includes an air guiding structure, which is disposed at the end of the sheath away from the connecting device. The air guiding structure is used to drive the air outlet of the air passage to flow towards the lens of the laparoscope.

8. The laparoscopic defogger according to claim 4, wherein The end face of the sheath facing away from the connecting device is set at an angle to the axial direction of the sheath.

9. The laparoscopic defogger according to claim 4, wherein, The connecting device is also provided with a fork-shaped mounting structure, which has a mounting groove for fixing the light source of the laparoscope.

10. The laparoscopic defogger according to any one of claims 1 to 8, characterized in that, The laparoscopic defogger also includes a suction line, through which the negative pressure device and the fourth interface are connected. The laparoscopic defogger also includes a flow regulator, which is disposed on the suction line and used to regulate the flow rate of the suction line.

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