Ultrasonic surgical knife with smoke removal structure

Abstract

The present invention relates to the field of ultrasonic scalpels, and more specifically, to an ultrasonic scalpel with a smoke removal structure, comprising a handle, a tool assembly, a first smoke duct, and a second smoke duct. The tool assembly is detachably mounted on the handle. The first smoke duct is disposed on the tool assembly, with a front end extending to the front end of the tool assembly and a rear end extending to the connection between the tool assembly and the handle. The second smoke duct is disposed within the handle, with a front end connected to the first smoke duct and a rear end extending to the outer surface of the handle and connected to a negative pressure generating device via a hose. The ultrasonic scalpel provided by the present invention has higher precision in operation, and also has advantages such as good smoke collection, convenient assembly of the tool assembly and the handle, and good smoke sealing.

Description

Technical Field

[0001] The present invention relates to the field of ultrasonic surgical knives, and in particular to an ultrasonic surgical knives with a smoke removal structure. Background Art

[0002] As we all know, ultrasonic scalpels, also known as ultrasonic knives, are surgical tools that use the high-frequency vibration of the blade to vaporize human tissue to achieve a cutting effect. The current ultrasonic scalpel system is mainly composed of a host, a transducer module, a blade body, a handle module, and other parts. When the ultrasonic scalpel is working, the transducer converts the electrical signal transmitted from the host into mechanical vibration, which is transmitted to the blade through the amplitude rod. The blade completes the cutting action after contacting the human tissue. Since the principle of the ultrasonic scalpel is to vaporize human tissue to achieve the cutting action, this will cause the ultrasonic scalpel to produce gas during operation. Most of these gases are toxic. If these toxic gases remain in the patient's body, they will have adverse effects on the patient's health.

[0003] To address the above-mentioned issues, the Chinese invention patent with announcement number CN209137792U discloses an ultrasonic scalpel for laparoscopic surgery with flushing and suction functions, comprising a handle, a sleeve, an ultrasonic blade head, a scalpel shaft, and an ultrasonic transducer. The handle is provided with an ultrasonic transducer, one end of the scalpel shaft is fixed to the ultrasonic blade head, and the other end of the scalpel shaft is fixedly connected to the ultrasonic transducer, one end of the sleeve shaft is connected to the handle, the sleeve shaft is provided with a hollow cavity, the ultrasonic blade head is provided at the other end of the sleeve shaft, and the scalpel shaft is provided in the hollow cavity of the sleeve shaft. This technical solution can absorb and extract mist, blood, and tissue fluid generated during surgery by connecting to a negative pressure source through negative pressure suction.

[0004] However, as we all know, the blade head or blade rod used in surgery needs to be disposable and needs to be discarded and replaced after use. Taking into account the cost of surgery, the handles and main units of most ultrasonic scalpels are currently designed to be reusable. In this way, when performing a new operation, only the blade head or blade rod part needs to be replaced. However, in the above technical solution, a sleeve rod is added to the outer periphery of the blade rod, and a negative pressure suction tube is provided in the gap between the sleeve rod and the blade rod to extract smoke. Since the negative pressure suction tube in this technical solution extends directly from the negative pressure generating device to the blade head, the blade rod and the blade head cannot be replaced separately. If they are to be discarded and replaced with new ones, the entire ultrasonic scalpel system needs to be discarded.

[0005] To address these issues, Chinese invention patent publication CN209253103U discloses an ultrasonic surgical scalpel with a smoking function. The scalpel comprises a smoking tube, an outer sleeve, and a blade head. The outer sleeve is sheathed with the smoking tube, which is then mounted on the blade head. The smoking tube is threaded into an internally threaded handle. The smoking tube has a second outlet perpendicular to the handle that connects to a bellows, and a smoking tube connector is fitted at the end of the bellows. By threading the smoking tube into the handle and directly leading a conduit from the smoking tube to a negative pressure generator, the blade rod is interchangeable.

[0006] However, this technical solution still has problems in actual use, as follows: Since the smoking tube is directly connected to the knife rod and connected to the bellows, this design will cause the center of gravity of the knife rod to be unstable. At the same time, there is also a risk of the bellows coming into contact with other parts of the patient's body, which in turn affects the doctor's feel and reduces the accuracy of the surgical operation. Summary of the Invention

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the defect of low operating accuracy of the ultrasonic surgical knife with a smoke removal device in the prior art, and thus provide an ultrasonic surgical knife with a smoke removal device with higher operating accuracy.

[0008] To this end, the technical solutions provided by the present invention are as follows:

[0009] An ultrasonic surgical knife with a smoke removal structure, comprising:

[0010] handle;

[0011] a knife assembly detachably mounted on the handle;

[0012] a first flue, which is provided on the cutter assembly, with a front end extending to the front end of the cutter assembly and a rear end extending to the connection between the cutter assembly and the handle;

[0013] Also includes:

[0014] The second flue is arranged inside the handle, with a front end connected to the first flue and a rear end extending to the outer surface of the handle and connected to the negative pressure generating device through a hose.

[0015] As a preferred technical solution, the end of the second flue extends to the rear of the handle.

[0016] As a preferred technical solution, the tool assembly includes:

[0017] Tool bar;

[0018] The inner tube is sleeved on the outer periphery of the cutter bar;

[0019] The outer tube is sleeved on the outer circumference of the inner tube, the side wall of the front end of the outer tube is provided with a smoke inlet, and the side wall of the rear end of the outer tube is provided with a smoke outlet;

[0020] A gap is provided between the inner tube and the outer tube, and the gap constitutes the front half of the first flue.

[0021] As a preferred technical solution, the tool assembly further includes:

[0022] A base body is provided at the end of the outer tube, and the positions on both sides of the smoke outlet of the outer tube are sealed with the base body;

[0023] The smoke collecting device is arranged on the base body and is communicated with the smoke outlet of the outer tube. The smoke collecting device is suitable for collecting the smoke flowing out of the smoke outlet of the outer tube and introducing the smoke into the second flue.

[0024] As a preferred technical solution, the smoke collecting device is arranged around the outer circumference of the outer tube, and the smoke collecting device has a smoke collecting passage arranged around the outer tube, and the end of the smoke collecting passage is connected to the front end of the second flue.

[0025] As a preferred technical solution, the smoke collecting device is provided with a protrusion, the end of the smoke collecting passage is provided on the protrusion, and the handle is provided with a groove suitable for accommodating the protrusion.

[0026] As a preferred technical solution, the inner tube and the outer tube are both sealed and installed at positions in front of the smoke inlet of the outer tube and at the rear of the smoke outlet of the outer tube.

[0027] As a preferred technical solution, the smoke inlet of the outer tube is inclined toward the front end of the knife rod.

[0028] As a preferred technical solution, a cabin suitable for accommodating the tool assembly is provided at the front of the handle, a cabin cover is provided above the cabin, one end of the cabin cover is hinged to the handle, and the cabin cover is installed above the cabin through a snap-on structure.

[0029] As a preferred technical solution, the clamping structure includes:

[0030] The hook body is fixed in the cabin;

[0031] A sliding member is slidably mounted on the hatch cover and has a clamping block suitable for cooperating with the structure, and the sliding direction of the sliding member is consistent with the opening direction of the structure;

[0032] The reset member is installed between the sliding member and the hatch cover and is suitable for applying a thrust to the sliding member toward the hook body.

[0033] The technical solution provided by the present invention has the following technical effects:

[0034] 1. The ultrasonic scalpel provided by the present invention includes a handle, a tool assembly, a first flue and a second flue, and the tool assembly is detachably mounted on the handle; the first flue is arranged on the tool assembly, with a front end extending to the front end of the tool assembly and a rear end extending to the connection between the tool assembly and the handle; the second flue is arranged inside the handle, with a front end connected to the first flue, a rear end extending to the outer surface of the handle and connected to the negative pressure generating device through a hose.

[0035] In this structure, smoke generated during surgery, under the action of the negative pressure generating device, first enters the first flue at the front end of the tool assembly, then enters the hose via the second flue. Because the second flue is located within the handle, the hose is also directly connected to the second flue through the handle. This places the hose closer to the operator's wrist, reducing the swing amplitude associated with the wrist during operation, thereby reducing the frequency of contact between the hose and the patient's body. Furthermore, because the center of gravity of the entire ultrasonic scalpel is closer to the wrist, the entire ultrasonic scalpel is more precisely maneuverable.

[0036] 2. In the ultrasonic surgical scalpel provided by the present invention, the distal end of the second flue extends to the rear of the handle. When the second flue is located at the rear of the handle, the hose and connectors connected to it are also located there. This allows the weight of the hose at the rear of the handle and the blade assembly at the front of the handle to be more evenly distributed around the handle, further reducing the likelihood of unbalanced loads on the handle. This also reduces the frequency of contact between the hose and the patient or operating table, further enhancing the operational precision of the ultrasonic surgical scalpel.

[0037] 3. The ultrasonic scalpel provided by the present invention comprises a tool rod, an inner tube and an outer tube, wherein the inner tube is sleeved on the outer circumference of the tool rod; the outer tube is sleeved on the outer circumference of the inner tube, a smoke inlet is provided on the side wall at the front end of the outer tube, and a smoke outlet is provided on the side wall at the end of the outer tube; a gap is provided between the inner tube and the outer tube, and the gap constitutes the front half of the first smoke duct.

[0038] By designing the tool assembly into the above-mentioned form, on the one hand, the first flue is separated by the inner tube and the tool rod, and the toxic smoke will not come into contact with the tool rod and flow back into the human body to cause secondary damage. On the other hand, the linkage between the inner tube and other components on the tool rod, such as the clamp, can also be guaranteed.

[0039] 4. The ultrasonic scalpel provided by the present invention, the tool assembly also includes a base and a smoke collection device, the base is arranged at the end of the outer tube, and the positions on both sides of the smoke outlet of the outer tube are sealed and installed with the base; the smoke collection device is arranged on the base and is connected to the smoke outlet of the outer tube, suitable for collecting the smoke flowing out of the smoke outlet of the outer tube and introducing it into the second flue.

[0040] In the above structure, the base, on the one hand, serves to provide an installation basis for the shank, inner tube, and exterior, and on the other hand, provides a larger contact area for the installation of the tool assembly and the handle. At the same time, the base cooperates with the smoke collection device to collect smoke and complete the first flue.

[0041] 5. In the ultrasonic surgical scalpel provided by the present invention, the smoke collecting device is arranged around the outer periphery of the outer tube, and the smoke collecting device has a smoke collecting passage arranged around the outer tube, and the end of the smoke collecting passage is connected to the front end of the second smoke duct.

[0042] The annular smoke collecting device can adapt to the annular gap formed between the inner tube and the outer tube, comprehensively collect the smoke in the gap, and guide it into the second flue.

[0043] 6. In the ultrasonic surgical scalpel provided by the present invention, the smoke collecting device is provided with a protrusion, the end of the smoke collecting passage is provided on the protrusion, and the handle is provided with a groove suitable for accommodating the protrusion.

[0044] The protrusion cooperates with the groove on the handle to position the smoke collection device and even the entire tool assembly, preventing them from rotating. Furthermore, since the end of the second flue is designed to be on the protrusion, when assembling the tool assembly and handle, the first and second flues can be docked by simply inserting the protrusion into the groove, which helps improve the sealing performance of the docking point and also makes assembly of the tool assembly and handle more convenient.

[0045] 7. In the ultrasonic surgical knife provided by the present invention, the inner tube and the outer tube are both sealed and installed at the front side of the smoke inlet of the outer tube and the rear side of the smoke outlet of the outer tube.

[0046] This allows the gap between the inner and outer tubes to form a single passageway with only one exit and one entrance, preventing smoke from entering other locations and facilitating smoke collection. Furthermore, a sealing member, such as a sealing ring, positioned between the inner and outer tubes also supports the gap between them, ensuring that the gap between the inner and outer tubes does not deform.

[0047] 8. In the ultrasonic surgical scalpel provided by the present invention, the smoke inlet of the outer tube is inclined toward the front end of the scalpel shaft. The smoke inlet inclined toward the front end of the scalpel shaft can generate a more direct attraction for the newly generated smoke, which is conducive to the collection of smoke.

[0048] In summary, the ultrasonic surgical knife provided by the present invention has higher precision in operation, and also has the advantages of good smoke collection effect, convenient assembly of the tool assembly and the handle, and good smoke sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0050] Figure 1 This is a front view of the ultrasonic surgical knife provided in Example 1 of the present invention;

[0051] Figure 2 for Figure 1 A partial enlarged view of part A in the middle, where the arrows indicate the direction of smoke flow;

[0052] Figure 3 for Figure 2 A-A cross-sectional view, wherein the arrows indicate the direction of smoke flow;

[0053] Figure 4 for Figure 2 A perspective view of the front end of the tool assembly is shown;

[0054] Figure 5 for Figure 1 A partial enlarged view of part B in the middle, where the arrows indicate the direction of smoke flow;

[0055] Figure 6 for Figure 5 A cross-sectional view taken along the B-B direction, wherein the arrows indicate the direction of smoke flow;

[0056] Figure 7 for Figure 6 The cross-sectional view along the C-C direction is shown in FIG. 1 , wherein the arrows indicate the direction of smoke flow;

[0057] Figure 8 for Figure 5 A perspective view of the rear end of the tool assembly is shown;

[0058] Figure 9 This is a perspective view of the housing of the handle of the ultrasonic surgical knife provided in Example 1 of the present invention, wherein the thick solid line shows the position of the second flue;

[0059] Figure 10 This is a three-dimensional diagram of the ultrasonic surgical knife provided in Example 1 of the present invention, with the cutter assembly and the handle separated;

[0060] Figure 11 for Figure 10 A partial enlarged view of the middle C part;

[0061] Description of reference numerals:

[0062] 1. Handle; 2. First flue; 3. Second flue; 4. Cutter assembly; 5. Smoke inlet; 6. Smoke outlet; 7. Cutter bar; 8. Inner tube; 9. Outer tube; 10. Base; 11. Smoke collecting device; 12. Protrusion; 13. Groove; 14. Sealing ring; 15. Cabin; 16. Hatch; 17. Hook; 18. Sliding part; 19. Block; 21. Negative pressure regulating device; 22. Hose. DETAILED DESCRIPTION

[0063] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0064] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0065] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0066] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0067] Example 1

[0068] A concept that needs to be explained in advance is that all the front ends mentioned in this embodiment refer to the end of the ultrasonic scalpel that is closer to the patient during surgery, and the back end or tip refers to the end of the ultrasonic scalpel that is away from the patient during surgery.

[0069] See also Figure 1 and Figure 10This is Example 1 of the present invention. This embodiment provides an ultrasonic surgical knife with a smoke removal mechanism. In addition to the functions of a conventional ultrasonic surgical knife, this embodiment can also absorb toxic gases generated by cutting human tissue during surgery, thereby uniformly treating these toxic gases. Furthermore, compared to existing technologies, this embodiment of the ultrasonic surgical knife has the advantage of high control precision.

[0070] Specifically, this embodiment includes a handle 1, a tool assembly 4, a first flue 2 and a second flue 3. The tool assembly 4 is detachably mounted on the handle 1; the first flue 2 is arranged on the tool assembly 4, with the front end extending to the front end of the tool assembly 4 and the end extending to the connection between the tool assembly 4 and the handle 1; the second flue 3 is arranged inside the handle 1, with the front end connected to the first flue 2, the end extending to the rear of the handle 1, and connected to the negative pressure generating device through a hose 22.

[0071] Specifically, the negative pressure generating device in this embodiment can be any commercially available medical negative pressure suction system. Different negative pressure suction systems do not affect the expression of the technical solution of the present invention. The handle 1 has a grip portion and a space for mounting a transducer assembly. The tool assembly 4 is mounted at the front end of the handle 1.

[0072] See also Figures 2 to 4 The tool assembly 4 specifically includes a tool rod 7, an inner tube 8 and an outer tube 9. The inner tube 8 is sleeved on the outer periphery of the tool rod 7; the outer tube 9 is sleeved on the outer periphery of the inner tube 8, and a smoke inlet 5 is opened on the side wall of the front end of the outer tube 9, and a smoke outlet 6 is opened on the side wall of the end of the outer tube 9; there is a gap between the inner tube 8 and the outer tube 9, which constitutes the front half of the first flue 2.

[0073] There are multiple smoke inlets 5 and smoke outlets 6, which are arranged around the side wall of the outer tube 9, and, see Figure 2 , the smoke inlet 5 is also inclined toward the front end of the cutter bar 7. The smoke inlet 5 inclined toward the front end of the cutter bar 7 can produce a more direct attraction to the smoke just produced, which is conducive to the collection of smoke.

[0074] See also Figure 8 The tool assembly 4 further includes a base 10 and a smoke collecting device 11. The base 10 is provided at the end of the outer tube 9, and the positions on both sides of the smoke outlet 6 of the outer tube 9 are sealed with the base 10; the smoke collecting device 11 is provided on the base 10 and communicates with the smoke outlet 6 of the outer tube 9. The smoke collecting device 11 is provided around the outer circumference of the outer tube 9. Figure 6 and Figure 7The smoke collecting device 11 includes a smoke collecting passage surrounding the outer tube 9, the end of which abuts the front end of the second flue 3. The smoke collecting device 11 collects smoke from the smoke outlet 6 of the outer tube 9 and directs it into the second flue 3. The smoke passage on the base 10 and the smoke passage within the smoke collecting device 11 together form the rear half of the first flue 2.

[0075] See also Figure 8 and Figure 9 To better seal the connection between the smoke collecting device 11 and the housing of the handle 1, the smoke collecting device 11 is provided with a protrusion 12. The end of the smoke collecting passage is located on the protrusion 12. The handle 1 is provided with a groove 13 for accommodating the protrusion 12. When the tool assembly 4 and the handle 1 need to be assembled, the protrusion 12 can be simply inserted into the groove 13 to achieve communication between the first flue 2 and the second flue 3. This structure also provides better sealing performance.

[0076] In this embodiment, the inner tube 8 and outer tube 9 are both sealed together by sealing rings 14 at locations in front of the outer tube 9's smoke inlet 5 and behind the outer tube 9's smoke outlet 6. This allows the gap between the inner tube 8 and outer tube 9 to form a single passageway, with only one exit and one entrance, preventing smoke from entering other locations. This facilitates smoke collection. Furthermore, a sealing member, such as a sealing ring, disposed between the inner tube 8 and outer tube 9 also supports the gap between the inner tube 8 and outer tube 9, ensuring that the gap between the inner tube 8 and outer tube 9 does not deform. Furthermore, the outer tube 9 and the base 10 are also sealed together by a sealing ring.

[0077] See also Figure 10 and Figure 11 To achieve a detachable connection between the tool assembly 4 and the handle 1, the handle 1 is provided with a housing 15 at the front thereof for accommodating the tool assembly 4. A hatch 16 is provided above the housing 15. One end of the hatch 16 is hingedly connected to the handle 1 and secured to the housing 15 via a snap-fit ​​mechanism. The snap-fit ​​mechanism comprises a hook 17, a slider 18, and a reset member. The hook 17 is fixed within the housing 15. The slider 18 is slidably mounted on the outer surface of the hatch 16 and, after passing through the hatch 16, has a latch 19 on its inner side for mating with the structure. The sliding direction of the slider 18 aligns with the direction of the structure's opening. The reset member is installed between the slider 18 and the hatch 16 to apply a thrust force toward the hook 17. In this embodiment, the reset member is a spring. The reset member maintains the latch 19 in its position within the hook 17, thereby maintaining the hatch 16 in a closed position relative to the housing 15.

[0078] See also Figure 1In order to adjust the magnitude of the negative pressure, this embodiment is further provided with a negative pressure regulating device 21. The negative pressure regulating device 21 is provided on the handle 1 and is connected to the negative pressure generating device through a control circuit. Twisting the negative pressure regulating device 21 can adjust the power of the negative pressure generating device, thereby controlling the magnitude of the negative pressure in the hose 22 and the first and second flues 2 and 3.

[0079] As an alternative embodiment of the negative pressure regulating device 21, see Figure 10 The negative pressure regulating device 21 can also be installed on the hose 22 in the form of a valve to directly control the degree of opening of the passage in the hose 22, and can also control the size of the negative pressure at the smoke inlet 5.

[0080] The working principle of this embodiment is:

[0081] During the operation, the smoke generated, under the action of the negative pressure generating device, first enters the first flue 2 from the smoke inlet 5 at the front end of the tool assembly 4, and then flows into the second flue 3 through the gap between the inner tube 8 and the outer tube 9, the smoke passage on the base 10, and the smoke collection device 11. The second flue 3 is set in the handle 1 and extends to the end of the handle 1 and is connected to the hose 22 through a quick connector. The smoke finally flows through the second flue 3 and the hose 22 and enters the smoke collection device for unified treatment. Since the outlet of the second flue 3 is set at the rear of the handle 1, the hose 22 is also directly installed on the handle 1 through a quick connector and connected to the second flue 3. In this way, the hose 22 is closer to the operator's wrist. The hose 22 at the rear of the handle 1 and the tool assembly 4 at the front of the handle 1 will distribute the weight around the handle 1 more evenly. During operation, the swing amplitude caused by the wrist is smaller, thereby reducing the frequency of contact between the hose 22 and the patient's body. At the same time, since the center of gravity of the entire ultrasonic scalpel is closer to the wrist, the controllability of the entire ultrasonic scalpel is also more precise.

[0082] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An ultrasonic surgical knife with a smoke removal structure, comprising: handle; a knife assembly detachably mounted on the handle; a first flue, which is provided on the cutter assembly, with a front end extending to the front end of the cutter assembly and a rear end extending to the connection between the cutter assembly and the handle; It is characterized by further comprising: The second flue is arranged inside the handle, with its front end connected to the first flue and its rear end extending to the outer surface of the handle and connected to the negative pressure generating device through a hose; The tool assembly includes a base and a smoke collecting device. The base is located at the end of the tool assembly and has a smoke passage constituting the first smoke duct. The smoke collecting device is arranged on the base and has a smoke collecting passage communicating with the smoke passage. The smoke collecting passage is suitable for connecting to the second smoke duct. The inner side wall of the handle is provided with a groove, the smoke collection device has a protrusion that cooperates with the groove, the end of the smoke collection passage is located on the protrusion, the groove is connected to the second flue, and the second flue is formed on the side wall of the handle and extends from the groove to the rear of the handle.

2. The ultrasonic surgical knife with a smoke removal structure according to claim 1, characterized in that: The tool assembly comprises: Tool bar; The inner tube is sleeved on the outer periphery of the cutter bar; The outer tube is sleeved on the outer circumference of the inner tube, the side wall of the front end of the outer tube is provided with a smoke inlet, and the side wall of the rear end of the outer tube is provided with a smoke outlet; A gap is provided between the inner tube and the outer tube, and the gap constitutes the front half of the first flue.

3. The ultrasonic surgical knife with a smoke removal structure according to claim 2, characterized in that: The base is arranged at the end of the outer tube, and the positions on both sides of the smoke outlet of the outer tube are sealed with the base; The smoke collecting device is communicated with the smoke outlet of the outer tube, and is suitable for collecting smoke flowing out of the smoke outlet of the outer tube and introducing the smoke into the second flue.

4. The ultrasonic surgical knife with a smoke removal structure according to claim 3, characterized in that: The smoke collecting device is arranged around the outer circumference of the outer tube, and has a smoke collecting passage arranged around the outer tube, and the end of the smoke collecting passage is connected to the front end of the second flue.

5. The ultrasonic surgical knife with a smoke removal structure according to claim 4, characterized in that: The smoke collecting device is provided with a protrusion, the end of the smoke collecting passage is provided on the protrusion, and the handle is provided with a groove suitable for accommodating the protrusion.

6. The ultrasonic surgical knife with a smoke removal structure according to claim 2, characterized in that: The inner tube and the outer tube are both sealed and installed at positions located in front of the smoke inlet of the outer tube and at the rear of the smoke outlet of the outer tube.

7. The ultrasonic surgical knife with a smoke removal structure according to claim 2, characterized in that: The smoke inlet of the outer tube is inclined toward the front end of the knife rod.

8. The ultrasonic surgical knife with a smoke removal structure according to claim 1, characterized in that: The front part of the handle is provided with a cabin body suitable for accommodating the tool assembly, and a cabin cover is provided above the cabin body. One end of the cabin cover is hinged to the handle, and the cabin cover is installed above the cabin body through a clamping structure.

9. The ultrasonic surgical knife with a smoke removal structure according to claim 8, characterized in that: The clamping structure includes: The hook body is fixed in the cabin; A sliding member is slidably mounted on the hatch cover and has a clamping block suitable for cooperating with the structure, and the sliding direction of the sliding member is consistent with the opening direction of the structure; The reset member is installed between the sliding member and the hatch cover and is suitable for applying a thrust to the sliding member toward the hook body.

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