Multichannel thoracoscope cannula with smoke evacuation and mist elimination

Abstract

The utility model provides a multi -pass thoracoscope cannula of smoke exhaust defogging, including mirror stem, camera lens, gas -guiding piece and pipe body, the camera lens sets up on the end surface of mirror stem, gas -guiding piece is located above the end surface of mirror stem, is equipped with gas -guiding cavity between gas -guiding piece and the end surface of mirror stem, the inner edge of gas -guiding piece surrounds and exhaust port opposite the camera lens, exhaust port with the radial inner end communication of gas -guiding cavity, the pipe body is set in the outside of mirror stem, is equipped with air inlet channel between pipe body and mirror stem, air inlet channel with the radial outer end communication of gas -guiding cavity, is equipped with smoke exhaust channel between the inner surface and the outer surface of pipe body, the smoke exhaust import of smoke exhaust channel sets up on the outer surface of pipe body, the integration of water mist elimination and smoke suction, guarantee the definition of camera lens.

Description

Technical Field

[0001] This utility model relates to the field of thoracoscopy technology, and in particular to a multi-channel thoracoscopy cannula for assisting in smoke and fog removal. Background Technology

[0002] During thoracoscopic surgery, the large temperature difference between the patient's body cavity and the endoscope can cause water vapor to easily form at the lens after the endoscope enters the body, thus affecting the surgical field. At the same time, the use of electrosurgical equipment during the operation can generate a large amount of smoke in the closed chest cavity, which can also seriously affect the surgical field, thus prolonging the operation time and affecting the patient's postoperative recovery.

[0003] Currently, to address the issues of water vapor and smoke during thoracoscopic surgery, additional channels are often used to allow the insertion of auxiliary instruments to remove smoke from the pleural cavity. For the issue of water vapor on the thoracoscopic lens, the lens is often removed for wiping. However, this method involves frequent insertion and removal of the thoracoscopic lens, which prolongs the surgical time and directly affects the overall surgical quality, thus requiring improvement. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a multi-channel thoracoscopic cannula for smoke and mist removal, thereby integrating water mist elimination and smoke extraction, improving smoke removal at the lens tip, and making the overall operation more convenient, reducing surgical time and improving postoperative recovery for patients.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A multi-channel thoracoscopic cannula for smoke extraction and defogging includes:

[0007] Mirror rod;

[0008] A lens, which is mounted on the end face of the lens rod;

[0009] An air guide plate is located above the end face of the lens rod. An air guide cavity is provided between the air guide plate and the end face of the lens rod. The inner edge of the air guide plate forms an exhaust port opposite to the lens. The exhaust port is connected to the radial inner end of the air guide cavity.

[0010] The tube body is sleeved on the outside of the mirror rod. An air inlet channel is provided between the tube body and the mirror rod. The air inlet channel is connected to the radial outer end of the air guide cavity. A smoke exhaust channel is provided between the inner and outer surfaces of the tube body. The smoke exhaust inlet of the smoke exhaust channel is opened on the outer surface of the tube body.

[0011] Optionally, the outer surface of the pipe body includes a pipe body inclined surface and a pipe body vertical surface, the pipe body inclined surface connects the pipe body vertical surface and the air guide plate, and the smoke exhaust inlet is opened on the pipe body inclined surface.

[0012] Optionally, it also includes:

[0013] The guide plate is formed by the inner edge of the air guide plate extending upward.

[0014] Optionally, it also includes:

[0015] A limiting ring abuts against the edge of the lens and is fixed to the end face of the lens rod, forming an air guiding cavity between the limiting ring and the air guide plate.

[0016] Optionally, the width of the air guide cavity gradually decreases from the radially outer end to the radially inner end of the air guide cavity.

[0017] Optionally, the end face of the lens rod is inclined relative to the axis of the lens rod.

[0018] Optionally, the outer wall of the pipe body is provided with a smoke exhaust port, and a filter chamber is provided between the smoke exhaust port and the smoke exhaust channel, and a filter screen is provided in the filter chamber.

[0019] Optionally, there are multiple air intake channels, which are spaced apart along the circumferential direction of the pipe body.

[0020] Optionally, a rectifier cavity is further provided between the tube body and the mirror rod. The first and last ends of the rectifier cavity are separated by a block. The first end of the rectifier cavity is connected to the air inlet. The air inlet is located on the outer wall of the tube body. The rectifier cavity is connected to each of the air inlet channels.

[0021] Optionally, it also includes:

[0022] A sheath, which is fitted over the outside of the tube body.

[0023] Compared with existing technologies, this technical solution has the following advantages:

[0024] The air guide cavity is arranged around the lens so that the gas introduced from the air inlet channel can blow the lens horizontally in a circumferential direction after passing through the air guide cavity, and finally be discharged from the exhaust port, so that the airflow can evenly disperse the water mist on the lens and ensure the clarity of the lens.

[0025] Smoke generated during thoracic surgery is discharged into the smoke exhaust channel through the smoke exhaust inlet, which can collect the smoke generated during thoracic surgery in a timely manner, prevent smoke from accumulating in the surgical area, and further ensure a clear surgical field during surgery. Attached Figure Description

[0026] Figure 1 This is a cross-sectional schematic diagram of the multi-channel thoracoscopy cannula for smoke extraction and demisting described in this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the multi-channel thoracoscope cannula for smoke extraction and demisting described in this utility model;

[0028] Figure 3 This is a schematic diagram of the rectifier cavity described in this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the filter cavity described in this utility model;

[0030] Figure 5 This is a schematic diagram of the assembly of the multi-channel thoracoscope cannula and sheath for smoke extraction and demisting described in this utility model.

[0031] In the diagram: 1. Lens rod; 2. Lens; 3. Tube body; 4. Air inlet channel; 5. Air guide chamber; 6. Connector; 7. Smoke exhaust channel; 8. Smoke exhaust inlet; 9. Smoke exhaust interface; 10. Air guide plate; 11. Guide plate; 13. Block; 14. Rectifying chamber; 15. Air inlet interface; 16. Filter chamber; 17. Filter screen; 18. Limiting ring; 19. Sheath tube; 20. Exhaust port; 21. Sloping surface of the tube body; 22. Vertical surface of the tube body. Detailed Implementation

[0032] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0033] like Figure 1 As shown, the multi-channel thoracoscopic cannula for smoke extraction and defogging includes:

[0034] 1.

[0035] Lens 2, wherein the lens 2 is disposed on the end face of the lens rod 1;

[0036] An air guide plate 10 is located above the end face of the lens rod 1. An air guide cavity 5 is provided between the air guide plate 10 and the end face of the lens rod 1. The inner edge of the air guide plate 10 forms an exhaust port 20 opposite to the lens 2. The exhaust port 20 is connected to the radial inner end of the air guide cavity 5.

[0037] The tube body 3 is sleeved on the outside of the mirror rod 1. An air inlet channel 4 is provided between the tube body 3 and the mirror rod 1. The air inlet channel 4 is connected to the radial outer end of the air guide cavity 5. A smoke exhaust channel 7 is provided between the inner and outer surfaces of the tube body 3. The smoke exhaust inlet 8 of the smoke exhaust channel 7 is opened on the outer surface of the tube body 3.

[0038] The endoscope rod 1 serves as a support for the lens 2, which is fixed to the end face of the endoscope rod 1, with both flush. The lens 2 is a miniature camera used to capture images of the interior of the thoracic cavity. An air guide 10 forms an air guide cavity 5 between itself and the end face of the endoscope rod 1. This air guide cavity 5 surrounds the lens 2, allowing gas introduced from the air inlet channel 4 to pass through the air guide cavity 5 and then horizontally and circumferentially sweep across the lens 2 before being discharged through the exhaust port 20. This ensures that the airflow evenly disperses water mist on the lens 2, guaranteeing its clarity. Smoke generated during thoracic surgery is discharged through the smoke exhaust inlet 8 into the smoke exhaust channel 7, effectively collecting the smoke and preventing its accumulation in the surgical area, further ensuring a clear surgical field.

[0039] The distal end of the endoscope rod 1 and the distal end of the tube 3 are used for insertion into the thoracic cavity, such as... Figure 1 and Figure 2 As shown, the lens 2 is disposed on the distal end face of the lens rod 1. Simultaneously, the air guide plate 10, the smoke inlet 8, and the exhaust port 20 are also located at the distal end of the tube body 3. The proximal ends of the lens rod 1 and the tube body 3 are located externally, and the smoke exhaust port 9 and the air inlet port 15 can be disposed at the proximal end of the tube body 3.

[0040] refer to Figure 1 The multi-channel thoracoscopic cannula for smoke extraction and demisting also includes:

[0041] A limiting ring 18 abuts against the edge of the lens 2 and is fixed to the end face of the lens rod 1.

[0042] The limiting ring 18 is used to fix the lens 2 to the end face of the lens rod 1, preventing the lens 2 from shifting. The limiting ring 18 is positioned to avoid obstructing the mirror surface of the lens 2, thus preventing the limiting ring 18 from blocking the mirror surface of the lens 2 during image capture.

[0043] The end face of the lens rod 1 is inclined relative to the axis of the lens rod 1. Similarly, the lens surface, limiting ring 18, and air guide plate 10 of the lens 2 are also inclined.

[0044] like Figure 1As shown, the outer edge of the air guide plate 10 can be integrally connected with the tube body 3. An air guide cavity 5 is formed between the air guide plate 10 and the limiting ring 18. The air guide cavity 5 is arranged around the lens 2. In this way, the gas introduced from the air inlet channel 4 can blow the lens 2 horizontally from the circumferential direction after passing through the air guide cavity 5.

[0045] refer to Figure 1 The width of the air guide cavity 5 gradually decreases from its radial outer end to its radial inner end. This increases the airflow velocity, thereby improving the cleaning effect on the lens 2.

[0046] like Figure 1 As shown, the multi-channel thoracoscopic cannula for smoke extraction and demisting also includes:

[0047] Guide plate 11, the inner edge of the air guide plate 10 extends upward to form the guide plate 11.

[0048] The guide plate 11 can be integrated with the air guide plate 10, ensuring the integrity and stability of the structure. When gas enters the air guide chamber 5 from the air inlet channel 4 and blows horizontally towards the lens 2, it forms an airflow with a certain direction and intensity in front of the lens 2. At this time, the guide plate 11 can further guide the airflow that converges after passing through the lens 2, causing the airflow to move in a predetermined direction, i.e., away from the sleeve 3. That is, the guide plate 11 can rectify the airflow to improve the controllability of the airflow in front of the lens 2, thereby reducing the problem of airflow being easily contaminated by smoke due to turbulence.

[0049] like Figure 1 As shown, the outer surface of the pipe body 3 includes a pipe body inclined surface 21 and a pipe body vertical surface 22. The pipe body inclined surface 21 connects the pipe body vertical surface 22 and the air guide plate 10. The smoke exhaust inlet 8 is opened on the pipe body inclined surface 21.

[0050] Due to the design of the inclined surface 21 of the tube body, i.e., the distal end of the tube body 3 is tapered, it is easier for the tube body 3 to enter the human body along with the lens rod 1, thereby reducing resistance. By opening the smoke exhaust inlet 8 on the inclined surface 21 of the tube body, a larger suction range can be obtained, improving the suction effect on smoke near the lens 2.

[0051] like Figure 2 and Figure 3 As shown, an air inlet 15 is provided on the outer wall of the proximal end of the tube body 3 for introducing gas. The air inlet 15 is connected to the air inlet channel 4. That is, gas is supplied to the air inlet channel 4 through the air inlet 15 at the proximal end of the tube body 3, so that the gas enters the air guide cavity 5 located at the distal end of the tube body 3 through the air inlet channel 4, and scans the lens 2 in a circumferential direction.

[0052] The air intake port 15 can be connected to the compressor via a hose, and the compressor will introduce outside air into the air intake channel 4.

[0053] There are multiple air intake channels 4, which are spaced apart along the circumference of the tube body 3. A connecting body 6 is provided between two adjacent air intake channels 4, and the tube body 3 and the mirror rod 1 are connected by the connecting body 6 to form an integrated structure.

[0054] refer to Figure 3 The cross-section of the air intake channel 4 is arc-shaped, and its curvature is much greater than that of the connector 6. This takes into account the stability requirements of the connection between the lens rod 1 and the connector 6, while increasing the gas delivery capacity of the air intake channel 4. This ensures that when the multiple circumferentially arranged air intake channels 4 deliver gas to the air guide cavity 5, they can sweep the lens 2 along the air guide cavity 5 and from the circumference of the lens 2, thus ensuring the clarity of the lens 2.

[0055] like Figure 3 As shown, a rectifying cavity 14 is also provided between the tube body 3 and the mirror rod 1. The rectifying cavity 14 is located at the same horizontal level as the air inlet 15, and the rectifying cavity 14 is connected to each of the air inlet channels 4, and the rectifying cavity 14 is also connected to the air inlet 15. In this way, gas enters the rectifying cavity 14 from the air inlet 15. Since the rectifying cavity 14 is connected to each of the air inlet channels 4, the gas entering the rectifying cavity 14 flows under the guidance of the shape trajectory defined by the rectifying cavity 14, and flows sequentially into the air inlet channels 4 connected to the rectifying cavity 14.

[0056] Furthermore, the beginning and end of the rectifier cavity 14 are separated by a block 13, and the beginning of the rectifier cavity 14 is connected to the air inlet 15. By setting the block 13, the gas flowing in from the end of the rectifier cavity 14 is blocked from flowing into the air inlet 15 along the shape trajectory defined by the rectifier cavity 14, thereby affecting the gas delivery capacity of each of the air inlet channels 4.

[0057] The rectifier cavity 14 is arc-shaped, and its curvature is determined by the size of the block 13. In this embodiment, the curvature of the rectifier cavity 14 is 320° to 350°.

[0058] like Figure 2 and Figure 4 As shown, the outer wall of the tube 3 is provided with a smoke exhaust port 9, which is connected to the smoke exhaust channel 7. The negative pressure device is connected to the smoke exhaust port 9 through a flexible hose, and provides negative pressure to the smoke exhaust inlet 8 through the smoke exhaust channel, thereby sucking out the smoke in the chest cavity and further improving the surgical field near the lens 2.

[0059] refer to Figure 1 , 2 The air inlet 15 is positioned closer to the proximal end of the pipe body 3 than the smoke exhaust inlet 9. This prevents the placement of the smoke exhaust channel 7 from affecting the placement of the air inlet 15 at the proximal end of the pipe body 3. Specifically, since there is no smoke exhaust channel 7 at the location of the air inlet 15 on the pipe body 3, the air inlet 15 can pass through the pipe body 3 and connect to the air inlet channel 4 located between the pipe body 3 and the mirror body 1.

[0060] refer to Figure 4 A filter chamber 16 is provided between the smoke exhaust port 9 and the smoke exhaust channel 7. A filter screen 17 is installed in the filter chamber 16 to filter large particulate matter in the smoke exhaust, thereby reducing the content of large particulate matter entering the negative pressure device. The negative pressure device includes a vacuum pump, a solenoid valve, pipes, etc. Under the action of the vacuum pump, the smoke exhaust channel 7 and the smoke exhaust inlet 8 are used to draw smoke from the chest cavity.

[0061] Continue to refer to Figure 1 , Figure 2 , Figure 4 The filter chamber 16 surrounds the outside of the smoke exhaust channel 7. The length of the filter chamber 16 is much smaller than the length of the smoke exhaust channel 7. The upper end of the smoke exhaust channel 7 is connected to the smoke exhaust inlet 8, the lower end of the smoke exhaust channel 7 is connected to the lower end of the filter chamber 16, and the upper end of the smoke exhaust channel 7 is connected to the smoke exhaust interface 9.

[0062] like Figure 5 As shown, the multi-channel thoracoscopic cannula for smoke extraction and demisting also includes:

[0063] Sheath 19, which is sleeved on the outside of the tube body 3.

[0064] The sheath 19 is provided with a passage along its axis for the tube body 3 to pass through. The sheath 19 enters the human body through a puncture device, thereby providing a passage for the tube body 3 to facilitate its entry into the human body. The inner diameter of the sheath 19 can be 15mm to fit the corresponding model of the tube body 3. The puncture device can be any type of puncture needle in the prior art, which is prior art and will not be described in detail here.

[0065] The method of using the multi-channel thoracoscopic cannula for smoke extraction and defogging is as follows:

[0066] Using the sheath 19, the tube body 3 and the lens rod 1, which are integrated as a whole, are inserted into the human body. The lens 2, smoke inlet 8, etc., are located inside the human body, while the air inlet 15, smoke outlet 9, etc., are located outside the human body.

[0067] Gas enters the air intake channel 4 through the air intake port 15, and after passing through the air guide cavity 5, it blows horizontally and circumferentially onto the lens 2, and finally exits through the exhaust port 20, so that the airflow evenly disperses the water mist on the lens 2, ensuring the clarity of the lens 2.

[0068] Meanwhile, the smoke generated during the thoracic surgery enters the smoke exhaust channel 7 through the smoke exhaust inlet 8 and is discharged through the smoke exhaust port 9, which can collect the smoke generated during the thoracic surgery in a timely manner, avoid the accumulation of smoke in the surgical area, and further ensure a clear surgical field during the operation.

[0069] In summary, the air guide cavity 5 is arranged around the lens 2 so that the gas introduced from the air intake channel 4 can blow the lens 2 horizontally in a circumferential direction after passing through the air guide cavity 5, and finally be discharged from the exhaust port 20, so that the airflow can evenly disperse the water mist on the lens 2 and ensure the clarity of the lens 2.

[0070] Smoke generated during thoracic surgery is discharged into the smoke exhaust channel 7 through the smoke exhaust inlet 8, which can collect the smoke generated during thoracic surgery in a timely manner, avoid the accumulation of smoke in the surgical area, and further ensure a clear surgical field during surgery.

[0071] An air intake channel 4 is provided between the tube body 3 and the endoscope rod 1, and a smoke exhaust channel 7 is provided between the inner and outer surfaces of the tube body 3. By making reasonable use of the sleeve structure, the air intake channel 4 and the smoke exhaust channel 7 are integrated, resulting in a compact structure that avoids the increased volume of the sleeve from causing harm to the patient.

[0072] The embodiments described above are only used to illustrate the technical ideas and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. The scope of patent application of this utility model should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in this utility model still fall within the patent scope of this utility model.

Claims

1. A multi-channel thoracoscopy cannula for smoke extraction and defogging, characterized in that, include: Mirror rod (1); Lens (2), the lens (2) is disposed on the end face of the lens rod (1); An air guide plate (10) is located above the end face of the lens rod (1). An air guide cavity (5) is provided between the air guide plate (10) and the end face of the lens rod (1). The inner edge of the air guide plate (10) forms an exhaust port (20) opposite to the lens (2). The exhaust port (20) is connected to the radial inner end of the air guide cavity (5). The tube body (3) is sleeved on the outside of the mirror rod (1). An air inlet channel (4) is provided between the tube body (3) and the mirror rod (1). The air inlet channel (4) is connected to the radial outer end of the air guide cavity (5). A smoke exhaust channel (7) is provided between the inner and outer surfaces of the tube body (3). The smoke exhaust inlet (8) of the smoke exhaust channel (7) is opened on the outer surface of the tube body (3).

2. The multi-channel thoracic endoscope cannula for smoke extraction and defogging as described in claim 1, characterized in that, The outer surface of the pipe body (3) includes a pipe body inclined surface (21) and a pipe body vertical surface (22). The pipe body inclined surface (21) connects the pipe body vertical surface (22) and the air guide plate (10). The smoke exhaust inlet (8) is opened on the pipe body inclined surface (21).

3. The multi-channel thoracic endoscope cannula for smoke extraction and defogging as described in claim 1, characterized in that, Also includes: The guide plate (11) is formed by the inner edge of the air guide plate (10) extending upward.

4. The multi-channel thoracic endoscope cannula for smoke extraction and defogging as described in claim 1, characterized in that, Also includes: A limiting ring (18) abuts against the edge of the lens (2) and is fixed to the end face of the lens rod (1). An air guiding cavity (5) is formed between the limiting ring (18) and the air guiding plate (10).

5. The multi-channel thoracic endoscope cannula for smoke extraction and defogging as described in claim 1, characterized in that, The width of the air guide cavity (5) gradually decreases from the radial outer end to the radial inner end.

6. The multi-channel thoracic endoscope cannula for smoke extraction and defogging as described in claim 1, characterized in that, The end face of the mirror rod (1) is inclined relative to the axis of the mirror rod (1).

7. The multi-channel thoracoscopy cannula for smoke extraction and defogging as described in claim 1, characterized in that, The outer wall of the pipe body (3) is provided with a smoke exhaust port (9), and a filter chamber (16) is provided between the smoke exhaust port (9) and the smoke exhaust channel (7), and a filter screen (17) is provided in the filter chamber (16).

8. The multi-channel thoracoscopy cannula for smoke extraction and defogging as described in claim 1, characterized in that, The number of air intake channels (4) is multiple, and the multiple air intake channels (4) are spaced apart along the circumferential direction of the pipe body (3).

9. The multi-channel thoracic endoscope cannula for smoke extraction and defogging as described in claim 8, characterized in that, A rectifier cavity (14) is provided between the tube body (3) and the mirror rod (1). The first and last ends of the rectifier cavity (14) are separated by a block (13). The first end of the rectifier cavity (14) is connected to the air inlet (15). The air inlet (15) is located on the outer wall of the tube body (3). The rectifier cavity (14) is connected to each of the air inlet channels (4).

10. The multi-channel thoracic endoscope cannula for smoke extraction and defogging as described in claim 1, characterized in that, Also includes: Sheath (19), which is sleeved on the outside of the tube body (3).

Images