Instant smoke suction system adaptive to ultrasonic scalpels with different lengths

Abstract

The invention relates to the technical field of ultrasonic operation auxiliary equipment, in particular to an instant smoke suction system adaptive to ultrasonic scalpels with different lengths, which comprises a smoke suction pipe, a fixing device and a negative pressure device, and the ultrasonic scalpel comprises a scalpel handle and a scalpel head which are connected with each other; smoke suction holes are formed in the front end of the smoke suction pipe, a smoke suction channel is formed in an inner cavity of the smoke suction pipe, and the negative pressure device communicates with the smoke suction channel to selectively provide negative pressure. The smoke suction pipe is supported on the fixing device, and a fixing area capable of fixing the knife handle is formed. When the scalpel handle is fixed by the fixing area, the scalpel head can enter the smoke suction channel from the rear end of the smoke suction pipe and extend out of the front end of the smoke suction channel, and the smoke suction hole sucks mist around the scalpel head into the smoke suction channel and conveys the mist backwards to the negative pressure device. And the pertinence and the efficiency of smoke removal are also obviously improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ultrasonic surgical assisting devices, and particularly relates to an instant smoke suction system suitable for ultrasonic surgical knives of different lengths. BACKGROUND

[0002] An ultrasonic knife system has been widely applied in clinical surgical treatment, and the working principle is that a transducer in an ultrasonic knife handle converts high-frequency electric energy provided by a host generator into ultrasonic mechanical vibration energy, and transmits the mechanical vibration energy and ultrasonic waves to a knife head. The high-power ultrasonic waves can make the cells of the tissue in contact with the knife head instantaneously water gasification, protein hydrogen bond rupture, and cell disintegration, so as to cut the tissue, and the frictional heat energy generated by the mechanical vibration of the knife head performs coagulation and hemostasis at the same time of cutting the tissue.

[0003] However, after the ultrasonic knife is in contact with the tissue in the working process, a large amount of gas mist containing carbon monoxide and acrylonitrile and other harmful substances is generated. These gas mists not only block the view of the operator and affect the operation, but also cause harm to the health of the operator, and even cause harm to the health of the medical staff.

[0004] For example, in the process of colorectal tumor surgery, the ultrasonic knife also needs to be used to separate the tumor, and the high temperature generated during the operation can cause a large amount of smoke in the abdominal cavity, making the laparoscope head blurred, especially in the narrow space of the pelvic cavity. If not removed in time, it will seriously interfere with the surgical field of view and make it impossible to accurately separate the layers, causing damage to important blood vessels and nerves. The current treatment scheme is to rely on the placement of an abdominal cavity smoke exhaust pipe to suck off the smoke during laparoscopic surgery. This method is slow and needs to repeatedly pull out the laparoscope head outside the body for cleaning and then soak it in warm water, which reduces the efficiency of the operation and interferes with the progress of the operation. SUMMARY

[0005] (I) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present application provides an instant smoke suction system suitable for ultrasonic surgical knives of different lengths. The system can be adapted to ultrasonic knives of different lengths, and as an external adaptation system relative to the surgical knife, it solves the technical problem that the smoke generated after the ultrasonic knife is in contact with the tissue in the working process cannot be instantaneously discharged, which blocks the view of the operator and affects the operation.

[0007] (II) Technical scheme

[0008] In order to achieve the above-mentioned purposes, the main technical scheme adopted by the present application comprises:

[0009] In a first aspect, the present invention provides an instant smoking system adapted to ultrasonic scalpels of different lengths, comprising a smoking tube, a fixing device, and a negative pressure device. The ultrasonic scalpel includes a handle and a blade head connected to each other. A smoking hole is provided at the front end of the smoking tube, and a smoking channel is formed in the inner cavity of the smoking tube. The negative pressure device is connected to the smoking channel to selectively provide negative pressure. The smoking tube is supported on the fixing device and forms a fixing area that can fix the handle. When the handle is fixed by the fixing area, the blade head can enter the smoking channel from the rear end of the smoking tube and extend from the front end of the smoking channel. The smoking hole draws the mist around the blade head into the smoking channel and delivers it to the negative pressure device.

[0010] In one technical solution of the present invention, a first limiting part is formed at the front end of the smoking tube. The first limiting part is used to contact the radial outer wall of the blade to limit the radial and axial relative positions between the smoking tube and the blade. The first limiting part has circumferentially distributed protrusions on the inner wall of the smoking tube, and the protrusions can contact the radial outer wall of the ultrasonic scalpel.

[0011] In one technical solution of the present invention, a rigid tube is also included, through which the negative pressure device and the smoking channel are connected; the rigid tube is offset to the radial side of the smoking tube, and the fixing device is fixedly connected to the rigid tube, with the fixing area facing the rear of the smoking tube.

[0012] In one embodiment of the present invention, the fixing device includes a frame and a spring clip fixedly connected to the frame, the spring clip forming a fixing area for clamping the tool holder.

[0013] In one embodiment of the present invention, an adjustment switch is also included, which is adapted to adjust the opening of the channel from the negative pressure device to the smoking tube.

[0014] In one technical solution of the present invention, the smoking tube is a telescopic tube so that the length of the smoking tube can be adjusted to fit ultrasonic scalpels of different lengths and models.

[0015] In one technical solution of the present invention, the smoking tube includes an inner tube, a middle tube, and an outer tube from front to back, and the three are nested from the inside to the outside. The front ends of the middle tube and the outer tube are respectively formed with a second limiting part and a third limiting part; the rear ends of the inner tube and the middle tube are respectively formed with a fourth limiting part and a fifth limiting part. The smoking tube can switch between a fully extended state, a first-order extended state, and a retracted state. In the fully extended state, the fourth limiting part corresponds to the second limiting part to limit the axial relative position between the inner tube and the middle tube, and the fifth limiting part corresponds to the third limiting part to limit the axial relative position between the middle tube and the outer tube. In the first-order extended state, the fourth limiting part corresponds to the second limiting part to limit the axial relative position between the inner tube and the middle tube, while the axial relative position between the middle tube and the outer tube is not limited. In the retracted state, the fourth limiting part corresponds to the fifth limiting part to limit the axial relative position between the inner tube and the middle tube, while the axial relative position between the middle tube and the outer tube is not limited.

[0016] In one technical solution of the present invention, the fourth limiting part and the fifth limiting part form limiting ring grooves on the radial outer walls of the inner tube, the middle tube and the outer tube, and the limiting ring grooves form limiting protrusions on the radial inner walls of the inner tube and the middle tube; the second limiting part and the third limiting part form circumferentially distributed limiting protrusions on the inner walls of the middle tube and the outer tube.

[0017] In one technical solution of the present invention, the inner tube includes a front section at the front end and a first flared section connected to the rear end of the front section, the diameter of the front section being smaller than the diameter of the first flared section; the middle tube includes a first constricted section at the front end, a second flared section at the rear end, and a middle section connecting the first constricted section and the second flared section, the diameter of the first constricted section being smaller than the diameter of the middle section being smaller than the diameter of the second flared section; the outer tube includes a second constricted section at the front end and a rear section connected to the rear end of the second constricted section, the diameter of the second constricted section being smaller than the diameter of the rear section; a second limiting part is located in the middle section, a third limiting part is located in the rear section, a fourth limiting part is located in the first flared section, and a fifth limiting part is located in the second flared section; the first flared section is clearance-fitted with the connecting section, and the outer diameter of the first flared section is larger than the inner diameter of the first constricted section; the second flared section is clearance-fitted with the rear section, and the outer diameter of the second flared section is larger than the inner diameter of the second constricted section.

[0018] In one technical solution of the present invention, an ultrasonic interface is also included. The ultrasonic interface is fixedly connected to the rear end of the smoking tube, and the blade can be inserted into the smoking channel through the ultrasonic interface.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of this invention are: the instant smoking system adapted to ultrasonic scalpels of different lengths integrates the smoking function with the surgical operation, effectively solving the problem of smoke interference during ultrasonic surgery.

[0021] The front end of the fumigation tube has a fumigation hole, forming a through-flow fumigation channel. A negative pressure device communicates with this channel, allowing selective activation of the negative pressure adsorption function as needed during surgery. A fixing device is located on the fumigation tube, featuring a dedicated area for clamping or securing the handle of the ultrasonic scalpel, ensuring the stability of the scalpel during use. When the handle is reliably fixed in this area, the scalpel tip naturally extends from the rear end of the fumigation tube, its front spatially aligned with the fumigation hole. This allows surgical smoke generated in the scalpel tip's working area to be promptly captured by the fumigation hole and discharged through the fumigation channel.

[0022] This technical solution not only ensures the flexibility and visibility of surgical procedures but also significantly improves the targeting and efficiency of smoke removal. Because the smoke extraction port is located immediately adjacent to the tip of the scalpel, smoke is drawn in by negative pressure as soon as it is generated, preventing it from spreading throughout the surgical field and maintaining a clear surgical view. This reduces the risk of surgical errors due to smoke obstruction. Simultaneously, the fixing device integrates the smoke extraction tube with the scalpel, avoiding the encroachment on surgical space and interference with the surgical process that traditional external smoke extraction devices cause, thus improving the overall convenience and coordination of the operation. Furthermore, the negative pressure device can dynamically adjust the suction power according to the actual amount of smoke, balancing smoke extraction effectiveness with control of airflow disturbance to surrounding tissues, preventing excessive negative pressure from affecting the stability of the surgical area. Overall, this system has significant beneficial effects in ensuring surgical safety, improving operational efficiency, and enhancing the intraoperative environment, and is particularly suitable for minimally invasive or delicate surgical scenarios requiring high clarity of the surgical field.

[0023] During colorectal tumor surgery, this instant fumigation system, compatible with ultrasonic scalpels of varying lengths, can simultaneously remove surgical mist, thereby improving surgical visibility and safety. Furthermore, since it eliminates the need for a separate intra-abdominal fumigation device, it simplifies the surgical procedure, reduces additional instrument damage to the abdominal cavity, and enhances the surgical experience for both the surgeon and the patient.

[0024] The smoking tube is telescopic, allowing its length to be adjusted to fit ultrasonic scalpels of different lengths and models, thereby further improving the flexibility of the system. Attached Figure Description

[0025] Figure 1 This is one of the structural schematic diagrams of the instant smoking system adapted to ultrasonic surgical scalpels of different lengths according to the present invention;

[0026] Figure 2 This is a schematic diagram of the fixing device of the present invention;

[0027] Figure 3 This is a schematic diagram of the front end of the smoking tube of the present invention;

[0028] Figure 4This is a schematic diagram of the instant smoking system adapted to ultrasonic surgical scalpels of different lengths, with the smoking tube in a fully extended state according to the present invention.

[0029] Figure 5 This is a schematic diagram of the instant smoking system adapted to ultrasonic surgical scalpels of different lengths, with the smoking tube in a first-stage elongation state according to the present invention.

[0030] Figure 6 This is a schematic diagram of the instant smoking system adapted to ultrasonic surgical scalpels of different lengths, with the smoking tube in a retracted state according to the present invention.

[0031] Figure 7 This is a schematic diagram of the structure when the second limiting part and the fourth limiting part of the present invention are not engaged;

[0032] Figure 8 This is a schematic diagram of the structure when the second limiting part and the fourth limiting part of the present invention are engaged;

[0033] Figure 9 This is a schematic diagram of the inner tube structure of the present invention;

[0034] Figure 10 For the present invention Figure 9 Schematic diagram of the cross-sectional structure of section 100-100;

[0035] Figure 11 For the present invention Figure 9 Schematic diagram of the cross-sectional structure of section 200-200;

[0036] Figure 12 This is a schematic diagram of the tube structure in this invention;

[0037] Figure 13 For the present invention Figure 12 Schematic diagram of the cross-sectional structure of section 300-300;

[0038] Figure 14 For the present invention Figure 12 Schematic diagram of the cross-sectional structure of section 400-400;

[0039] Figure 15 This is a schematic diagram of the outer tube structure of the present invention;

[0040] Figure 16 For the present invention Figure 15 Schematic diagram of the cross-sectional structure of 500-500.

[0041] [Explanation of Labels in the Attached Image]

[0042] 1: Smoking tube; 1a: Smoking hole; 1b: First limiting part;

[0043] 11. Inner tube; 12. Middle tube; 13. Outer tube;

[0044] 111. Front section; 112. First flared section;

[0045] 121. First narrowing section; 122. Middle section; 123. Second widening section;

[0046] 131. Second constriction section; 132. Rear section;

[0047] A. Second limiting part; B. Third limiting part; C. Fourth limiting part; D. Fifth limiting part;

[0048] 10. Limiting ring groove; 20. Limiting protrusion; 30. Limiting protrusion;

[0049] 2: Fixing device; 2a: Fixing area; 21: Frame; 22: Spring clip;

[0050] 3: Rigid pipe;

[0051] 4: Adjust the switch;

[0052] 5: Ultrasonic interface. Detailed Implementation

[0053] To better explain and facilitate understanding of this invention, the following description is provided in conjunction with the appendix. Figures 1-16 The present invention will be described in detail through specific embodiments. In this document, directional terms such as "upper" and "lower" are used interchangeably with other directional terms. Figure 1 With reference to the orientation, Figure 1 In this text, "left" refers to "front" and "right" refers to "back".

[0054] Example 1:

[0055] Reference Figures 1-16 The present invention provides an instant smoking system adapted to ultrasonic scalpels of different lengths, including a smoking tube 1, a fixing device 2, and a negative pressure device. The ultrasonic scalpel includes a handle and a blade head connected to each other. The front end of the smoking tube 1 is provided with a smoking hole 1a, and the inner cavity of the smoking tube 1 forms a smoking channel. The negative pressure device is connected to the smoking channel to selectively provide negative pressure. The smoking tube 1 is supported on the fixing device 2 and has a fixing area 2a that can fix the handle. When the handle is fixed by the fixing area 2a, the blade head can enter the smoking channel from the rear end of the smoking tube 1 and extend from the front end of the smoking channel. The smoking hole 1a draws the mist around the blade head into the smoking channel and delivers it to the negative pressure device.

[0056] In this embodiment, the instant smoking system adapted to ultrasonic scalpels of different lengths integrates the smoking function with the surgical operation, effectively solving the problem of smoke interference during ultrasonic surgery.

[0057] The front end of the fumigation tube 1 has a fumigation hole 1a, forming a through-flow fumigation channel. The negative pressure device is connected to this channel and can selectively activate the negative pressure adsorption function according to surgical needs. The fixing device 2 is set on the fumigation tube 1 and has a fixing area 2a specifically for clamping or locking the handle of the ultrasonic scalpel, ensuring the stability of the scalpel during use. When the handle is reliably fixed in this area, the scalpel head naturally extends from the rear end of the fumigation tube 1, and its front part corresponds spatially with the fumigation hole 1a, so that the surgical smoke generated in the working area of ​​the scalpel head can be captured by the fumigation hole 1a in a timely manner and discharged through the fumigation channel.

[0058] This technical solution not only ensures the flexibility and visibility of surgical procedures but also significantly improves the targeting and efficiency of smoke removal. Because the smoke extraction port 1a is located close to the tip of the scalpel, smoke is immediately drawn in by negative pressure upon generation, preventing it from spreading within the surgical field and maintaining a clear surgical view. This reduces the risk of surgical errors due to smoke obstruction. Simultaneously, the fixing device 2 integrates the smoke extraction tube 1 with the scalpel, avoiding the encroachment on surgical space and interference with the surgical process inherent in traditional external smoke extraction devices, thus improving the overall convenience and coordination of the operation. Furthermore, the negative pressure device can dynamically adjust the suction power according to the actual amount of smoke, balancing smoke extraction effectiveness with control over airflow disturbance to surrounding tissues, preventing excessive negative pressure from affecting the stability of the surgical area. Overall, this system has significant beneficial effects in ensuring surgical safety, improving operational efficiency, and enhancing the intraoperative environment, and is particularly suitable for minimally invasive or delicate surgical procedures requiring high surgical field clarity.

[0059] During colorectal tumor surgery, this instant fumigation system, compatible with ultrasonic scalpels of varying lengths, can directly remove surgical mist during the procedure, thereby improving surgical visibility and safety. Furthermore, since it eliminates the need for a separate intra-abdominal fumigation device, it simplifies the surgical procedure, reduces additional instrument damage to the abdominal cavity, and enhances the surgical experience for both the surgeon and the patient.

[0060] Specifically, the smoking hole 1a is a through hole circumferentially distributed on the outer wall of the front end of the smoking tube 1 to ensure adsorption efficiency and adsorption uniformity.

[0061] It also includes an ultrasonic interface 5, which is fixedly connected to the rear end of the smoke tube 1. The blade can be inserted into the smoke channel through the ultrasonic interface 5. The ultrasonic interface 5 can establish a seal between the rear of the blade and the smoke tube 1 to prevent pressure leakage.

[0062] Example 2:

[0063] Reference Figures 1-16 In addition to possessing all the technical solutions of the above embodiments, the embodiments of the present invention further possess the following technical solutions:

[0064] The front end of the smoking tube 1 is formed with a first limiting part 1b, which is used to contact the radial outer wall of the blade to limit the radial and axial relative positions between the smoking tube 1 and the blade. The first limiting part 1b forms circumferentially distributed protrusions on the inner wall of the smoking tube 1. The protrusions can contact the radial outer wall of the ultrasonic scalpel, and the protrusions are spaced apart to facilitate the passage of mist.

[0065] In this embodiment, the first limiting part 1b is specifically constructed as a plurality of protrusions evenly distributed circumferentially on the inner wall of the front end of the smoking tube 1. It is configured to contact the radial outer wall of the blade, thereby effectively constraining the relative position between the smoking tube 1 and the blade in the radial direction, and also restricting the axial relative position between the two through friction.

[0066] Because the scalpel head vibrates at high frequency during ultrasonic surgery and requires high positioning accuracy, excessive gaps or eccentricity between it and the fumigation tube 1 will not only affect the smoke collection efficiency of the fumigation port 1a but may also interfere with surgical operations due to shaking. Through a circumferentially distributed protrusion design, the first limiting part 1b can simultaneously contact the outer wall of the scalpel head in multiple directions, achieving centering and positioning. This limits radial movement and avoids localized stress concentration or scratches on the scalpel head surface that may be caused by single-point contact. Simultaneously, this non-fully enclosed limiting structure retains necessary axial degrees of freedom, facilitating fine-tuning of the scalpel head during assembly or use, and also allowing smoke to smoothly enter the fumigation tube 1 from around the scalpel head. Overall, this structure significantly improves the spatial coordination and dynamic stability between the fumigation system and the ultrasonic scalpel without adding complex mechanisms, ensuring that negative pressure adsorption always accurately acts on the smoke source, thereby optimizing surgical field clarity, improving surgical safety, and enhancing operational smoothness.

[0067] Specifically, circumferentially distributed pits can be provided on the outer wall of the front end of the smoking tube 1, so that circumferentially distributed limiting protrusions 30 can be naturally formed on its inner wall.

[0068] Example 3:

[0069] Reference Figures 1-16 In addition to possessing all the technical solutions of the above embodiments, the embodiments of the present invention further possess the following technical solutions:

[0070] The instant smoking system adapted to ultrasonic scalpels of different lengths also includes a rigid tube 3, through which the negative pressure device and the smoking channel are connected; the rigid tube 3 is offset to the radial side of the smoking tube 1, and the fixing device 2 is fixedly connected to the rigid tube 3, with the fixing area 2a facing the rear of the smoking tube 1.

[0071] In this embodiment, the instant fumigation system adapted to ultrasonic scalpels of different lengths further includes a rigid tube 3 for reliably connecting the negative pressure device to the fumigation channel within the fumigation tube 1, thereby constructing a complete negative pressure drainage path. The rigid tube 3 does not extend axially along the fumigation tube 1, but rather extends radially from one side of the fumigation tube 1, creating a spatially spaced layout. The fixing device 2 is directly fixed to the rigid tube 3, and its fixing area 2a for clamping the scalpel handle is precisely positioned opposite the rear end of the fumigation tube 1. This layout allows the scalpel tip to be naturally inserted into the fumigation tube 1 after the scalpel handle is securely clamped by the fixing area 2a, improving the structural compactness of the fumigation system.

[0072] Meanwhile, the arrangement of the rigid tube 3 and the fixing device 2 makes the fixing device 2 and the smoking tube 1 integrated, so that the surgeon can operate the handle of the ultrasonic scalpel when performing surgery, which improves the convenience of surgery.

[0073] Specifically, the alignment between the fixed area 2a and the rear end of the smoke extraction tube 1 is solidified by the geometric positioning of the rigid tube 3, avoiding misalignment between the blade and the smoke extraction hole 1a caused by assembly errors. This ensures both the unobstructed flow of the negative pressure channel and its adsorption efficiency, while also guaranteeing the repeatability and operational stability of the scalpel installation. While maintaining a clear surgical field and improving the smoke removal response speed, the system also optimizes ergonomics, allowing surgeons to focus more on precise operations and significantly improving surgical safety and efficiency.

[0074] Specifically, the rigid tube 3 also functions as an operating handle, allowing the operator to hold the device.

[0075] Example 4:

[0076] Reference Figures 1-16 In addition to possessing all the technical solutions of the above embodiments, the embodiments of the present invention further possess the following technical solutions:

[0077] The fixing device 2 includes a frame 21 and a spring clip 22 fixedly connected to the frame 21. The spring clip 22 forms a fixing area 2a for clamping the knife handle. Preferably, the center position of the spring clip 22 corresponds to the axis position of the knife handle, so that the spring clip 22 can improve the adaptability to knife handles of various radii. Specifically, the contact surface between the spring clip 22 and the knife handle has a flexible layer to prevent it from damaging the knife handle. The flexible layer can be made of highly elastic silicone material, which can match ultrasonic scalpel handles with similar shapes and sizes, and also provides an anti-slip function.

[0078] In this embodiment, regardless of the specific diameter of the handle, as long as it is within the elastic deformation range of the spring clip 22, the clamping force can be uniformly applied radially to the outer circumference of the handle, thereby ensuring that the central axis of the handle remains coaxial with the axis of the smoke extraction tube 1 after installation. This clamping method based on center alignment effectively avoids the misalignment problem between the blade and the smoke extraction hole 1a caused by eccentric installation, ensuring the accuracy and stability of smoke adsorption.

[0079] Example 5:

[0080] Reference Figures 1-16 In addition to possessing all the technical solutions of the above embodiments, the embodiments of the present invention further possess the following technical solutions:

[0081] It also includes an adjustment switch 4, which is suitable for adjusting the opening of the passage from the negative pressure device to the smoking pipe 1. Specifically, the adjustment switch 4 can be set on the rigid pipe 3. The adjustment switch 4 can be a gate that can slide radially. By pressing the operating end of the gate that exposes the part of the rigid pipe 3, the opening of the gate relative to the inner cavity of the rigid pipe 3 can be adjusted.

[0082] Specifically, a portion of the gate is embedded within the wall of the rigid tube 3, while the other portion extends out to the operating end, which is located on the outside of the rigid tube 3 for easy one-handed operation by the surgeon. When the surgeon presses the operating end, the gate slides radially, and the portion extending into the inner cavity of the rigid tube 3 changes position accordingly, thereby adjusting the degree of obstruction of the inner cavity channel: the more the gate slides in, the smaller the inner cavity opening, the lower the negative pressure flow rate, and the weaker the suction; conversely, when the gate retracts, the opening increases and the suction strengthens.

[0083] This structural design enables continuous, stepless adjustment of smoke extraction intensity, allowing the system to respond flexibly based on surgical stage, tissue type, or smoke generation. For example, when cutting dense tissue with high smoke volume, the suction can be increased to enhance adsorption; while during delicate operations or when approaching sensitive structures, the suction force can be reduced to avoid disturbing surrounding tissues or obstructing vision due to excessive negative pressure or the inhalation of liquids. Simultaneously, the gate can employ an elastic sliding mechanism, such as a spring-loaded return structure, to ensure a clear tactile feedback during operation. Because the rigid tube 3 is close to the scalpel handle, the overall structure is compact, allowing the surgeon to easily operate the valve. This ensures efficient smoke extraction while maintaining surgical safety and operational flexibility, significantly improving clinical applicability.

[0084] Example 6:

[0085] Reference Figures 1-16 In addition to possessing all the technical solutions of the above embodiments, the embodiments of the present invention further possess the following technical solutions:

[0086] The length of the smoking tube 1 is adjustable to accommodate ultrasonic scalpels of different lengths and models.

[0087] The smoking tube 1 is a telescopic tube; the smoking tube 1 includes an inner tube 11, a middle tube 12 and an outer tube 13 from front to back, and the three are nested from the inside to the outside.

[0088] The front ends of the middle tube 12 and the outer tube 13 are respectively formed with a second limiting part A and a third limiting part B; the rear ends of the inner tube 11 and the middle tube 12 are respectively formed with a fourth limiting part C and a fifth limiting part D.

[0089] The smoking tube 1 can switch between a fully extended state, a first-order extended state, and a retracted state;

[0090] In the fully extended state, the fourth limiting part C corresponds to the second limiting part A to limit the axial relative position between the inner tube 11 and the middle tube 12, and the fifth limiting part D corresponds to the third limiting part B to limit the axial relative position between the middle tube 12 and the outer tube 13.

[0091] In the first-stage elongation state, the fourth limiting part C corresponds to the second limiting part A to limit the axial relative position between the inner tube 11 and the middle tube 12, while the axial relative position between the middle tube 12 and the outer tube 13 is not limited.

[0092] In the contracted state, the fourth limiting part C and the fifth limiting part D are positioned to restrict the axial relative position between the inner tube 11 and the middle tube 12, while the axial relative position between the middle tube 12 and the outer tube 13 is not restricted.

[0093] The fourth limiting part C and the fifth limiting part D form a limiting ring groove 10 on the radial outer wall of the inner tube 11, the middle tube 12 and the outer tube 13, and the limiting ring groove 10 forms a limiting protrusion 20 on the radial inner wall of the inner tube 11 and the middle tube 12.

[0094] The inner walls of the middle tube 12 and the outer tube 13 corresponding to the second limiting part A and the third limiting part B are formed with circumferentially distributed limiting protrusions 30.

[0095] The inner tube 11 includes a front section 111 at the front end and a first flared section 112 connected to the rear end of the front section 111. The diameter of the front section 111 is smaller than the diameter of the first flared section 112.

[0096] The middle tube 12 includes a first constricted section 121 at the front end, a second flared section 123 at the rear end, and a middle section 122 connecting the first constricted section 121 and the second flared section 123. The diameter of the first constricted section 121 is smaller than the diameter of the middle section 122, which is smaller than the diameter of the second flared section 123.

[0097] The outer tube 13 includes a second constricted section 131 at the front end and a rear section 132 connected to the rear end of the second constricted section 131. The diameter of the second constricted section 131 is smaller than the diameter of the rear section 132.

[0098] The second limiting part A is located in the middle section 122, the third limiting part B is located in the rear section 132, the fourth limiting part C is located in the first flared section 112, and the fifth limiting part D is located in the second flared section 123.

[0099] The first flared section 112 is clearance-fitted with the connecting section, and the outer diameter of the first flared section 112 is larger than the inner diameter of the first constricted section 121;

[0100] The second flared section 123 is clearance-fitted with the rear section 132, and the outer diameter of the second flared section 123 is larger than the inner diameter of the second constricted section 131.

[0101] In this embodiment, the smoking tube 1 adopts a three-section nested telescopic structure, forming an adjustable-length smoking channel that can flexibly adapt to ultrasonic scalpels of different lengths. Through precise stepped tube diameter design, gap fit, and the synergistic effect of multi-level limiting structures, the system ensures structural stability while achieving precise alignment between the smoking port 1a and the tip of the scalpel under various scalpel configurations, thereby continuously and efficiently removing smoke generated during surgery and ensuring a clear surgical field.

[0102] In terms of specific structure, the inner tube 11 includes a front section 111 with a thinner front end and a first flared section 112 at the rear end. The diameter of the front section 111 is smaller than that of the first flared section 112, forming a distinct step. The middle tube 12 includes a first constricted section 121 at the front end, a middle section 122 in the middle, and a second flared section 123 at the rear end. Their diameters are in an increasing relationship: first constricted section 121 < middle section 122 < second flared section 123. The outer tube 13 includes a second constricted section 131 at the front end and a rear section 132 at the rear end. The diameter of the second constricted section 131 is smaller than that of the rear section 132. This gradually changing pipe diameter not only provides good guidance for the sliding between pipe sections, but also forms a natural anti-detachment structure through size differences. For example, the outer diameter of the first flared section 112 of the inner pipe 11 is larger than the inner diameter of the first constricted section 121 of the middle pipe 12, so the inner pipe 11 cannot be completely detached from the middle pipe 12 from the front end. Similarly, the outer diameter of the second flared section 123 of the middle pipe 12 is larger than the inner diameter of the second constricted section 131 of the outer pipe 13, effectively preventing the middle pipe 12 from accidentally sliding out.

[0103] To achieve three distinct and practical length states, the system is equipped with four sets of limit structures:

[0104] The fourth limiting part C is located on the outer wall of the first flared section 112 of the inner tube 11, and is manifested as a limiting ring groove 10;

[0105] The fifth limiting part D is located on the outer wall of the second flared section 123 of the middle tube 12, and is also a limiting annular groove 10;

[0106] Matching limiting protrusions 20 are naturally formed on the corresponding inner walls of the middle tube 12 and the inner tube 11, which are used to embed other corresponding limiting parts to achieve axial locking.

[0107] The second limiting part A is provided on the inner wall of the middle section 122 of the central tube 12, and exists in the form of a circumferentially distributed limiting protrusion 30;

[0108] The third limiting part B is located on the inner wall of the rear section 132 of the outer tube 13, and is also a circumferentially distributed limiting protrusion 30.

[0109] Based on the above structure, the smoking tube 1 can switch between the following three states:

[0110] In its fully extended state: the inner tube 11 is pulled forward to its limit, and the fourth limiting part C, i.e., the annular groove, on its first flared section 112 engages with the limiting protrusion 30 of the second limiting part A of the middle tube 12, achieving axial locking between the inner tube 11 and the middle tube 12; simultaneously, the middle tube 12 is also fully extended, and the annular groove of the fifth limiting part D on its second flared section 123 engages with the limiting protrusion 30 of the third limiting part B, locking the relative position of the middle tube 12 and the outer tube 13. At this point, the overall length is at its maximum, suitable for long ultrasonic scalpels, ensuring that the smoking hole 1a is accurately aligned with the tip of the scalpel.

[0111] First-stage elongation state: The inner tube 11 is still fully extended and locked with the middle tube 12, but the middle tube 12 is not fully extended from the outer tube 13. At this time, there is no axial restraint between the middle tube 12 and the outer tube 13, allowing the middle tube 12 to slide freely within the outer tube 13 or to be finely adjusted in position according to operation. This state is suitable for medium-length cutting tools, taking into account both adaptability and operational flexibility. Since the first limiting part 1b can contact the cutting head and thus limit the axial position between them, the length of the smoke tube 1 can also be relatively fixed in the first-stage elongation state.

[0112] In the retracted state: the inner tube 11 slides backward into the middle tube 12, and the fourth limiting part C on its first flared section 112 cooperates with the fifth limiting part D on the second flared section 123 of the middle tube 12 to achieve axial locking between the inner tube 11 and the middle tube 12; while there is no axial limitation between the middle tube 12 and the outer tube 13, they are in a sliding state. This state has the shortest overall length, which is convenient for preoperative storage, quick switching during surgery, or use with short instruments. Since the first limiting part 1b can contact the blade tip and thus limit the axial position between the two, the length of the smoking tube 1 can also be relatively fixed in the retracted state.

[0113] It is worth noting that the second limiting part A and the third limiting part B adopt a circumferentially distributed limiting protrusion 30 structure, which reduces sliding resistance and makes the telescopic operation smoother.

[0114] In summary, this telescopic smoking tube 1, through reasonable geometric gradation, gap matching, and selective limiting mechanisms, achieves rapid length adjustment and reliable locking without the need for additional tools or complex operations. This design significantly improves the system's compatibility with different models of ultrasonic scalpels and ensures that the smoking port 1a is always aligned with the smoke source in various usage scenarios, thereby continuously and efficiently maintaining a clear surgical field, improving surgical safety and operational smoothness, and demonstrating outstanding clinical practical value.

[0115] Specifically, the inner tube 11, middle tube 12, and outer tube 13 are made of 304 stainless steel in one piece. The rigid tube 3, ultrasonic interface 5, adjustment switch 4, and fixing device 2 are made of ABS material. The rigid tube 3 and ultrasonic interface 5 are an integral structure, and the ultrasonic interface 5 is fixed to the rear end of the smoking tube 1 by a sleeve.

[0116] It can be understood that, except for conflicting parts, the above embodiments 1-6 can be freely combined to form other embodiments of the present invention.

[0117] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0118] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0119] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0120] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0121] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. An instant smoking system adapted to ultrasonic surgical scalpels of different lengths, characterized in that: The ultrasonic scalpel includes a smoking tube (1), a fixing device (2), and a negative pressure device, and the ultrasonic scalpel includes a handle and a blade connected to each other; The front end of the smoking tube (1) is provided with a smoking hole (1a), and the inner cavity of the smoking tube (1) forms a smoking channel. The negative pressure device is connected to the smoking channel to selectively provide negative pressure. The smoking tube (1) is supported on the fixing device (2) and has a fixing area (2a) that can fix the knife handle. When the handle is fixed by the fixing area (2a), the blade can enter the smoking channel from the rear end of the smoking tube (1) and extend from the front end of the smoking channel, and the smoking hole (1a) draws the mist around the blade into the smoking channel and delivers it to the negative pressure device. The smoking tube (1) is a telescopic tube so that the length of the smoking tube (1) can be adjusted to fit ultrasonic scalpels of different lengths.

2. The instant smoking system adapted to ultrasonic scalpels of different lengths as described in claim 1, characterized in that: The front end of the smoking tube (1) is provided with a first limiting part (1b), which is used to contact the radial outer wall of the blade to limit the radial relative position and axial relative position between the smoking tube (1) and the blade. The first limiting part (1b) forms circumferentially distributed protrusions on the inner wall of the smoking tube (1), and the protrusions can contact the radial outer wall of the ultrasonic scalpel.

3. The instant smoking system adapted to ultrasonic scalpels of different lengths as described in claim 1, characterized in that: It also includes a rigid tube (3), through which the negative pressure device is connected to the smoking channel; The rigid tube (3) is positioned to make way for the radial side of the smoking tube (1), the fixing device (2) is fixedly connected to the rigid tube (3), and the fixing area (2a) is directly opposite the rear position of the smoking tube (1).

4. The instant smoking system adapted to ultrasonic scalpels of different lengths as described in claim 3, characterized in that: The fixing device (2) includes a frame (21) and a spring clip (22) fixedly connected to the frame (21), the spring clip (22) being able to form a fixing area (2a) for clamping the tool holder.

5. The instant smoking system adapted to ultrasonic scalpels of different lengths as described in claim 3, characterized in that: It also includes an adjustment switch (4) adapted to adjust the opening of the passage from the negative pressure device to the smoking tube (1).

6. The instant smoking system adapted to ultrasonic scalpels of different lengths as described in claim 2, characterized in that: The smoking tube (1) consists of an inner tube (11), a middle tube (12) and an outer tube (13) from front to back, and the three are nested from the inside to the outside. The front ends of the middle tube (12) and the outer tube (13) are respectively provided with a second limiting part (A) and a third limiting part (B); the rear ends of the inner tube (11) and the middle tube (12) are respectively provided with a fourth limiting part (C) and a fifth limiting part (D). The smoking tube (1) can switch between a fully extended state, a first-order extended state, and a retracted state; In the fully extended state, the fourth limiting part (C) corresponds to the second limiting part (A) to restrict the axial relative position between the inner tube (11) and the middle tube (12), and the fifth limiting part (D) corresponds to the third limiting part (B) to restrict the axial relative position between the middle tube (12) and the outer tube (13). In the first-stage elongated state, the fourth limiting part (C) corresponds to the second limiting part (A) to restrict the axial relative position between the inner tube (11) and the middle tube (12), while the axial relative position between the middle tube (12) and the outer tube (13) is not restricted. In the contracted state, the fourth limiting part (C) corresponds to the fifth limiting part (D) to restrict the axial relative position between the inner tube (11) and the middle tube (12), while the axial relative position between the middle tube (12) and the outer tube (13) is not restricted.

7. The instant smoking system adapted to ultrasonic scalpels of different lengths as described in claim 6, characterized in that: The fourth limiting part (C) and the fifth limiting part (D) form a limiting ring groove (10) on the radial outer wall of the inner tube (11), the middle tube (12) and the outer tube (13), and the limiting ring groove (10) forms a limiting protrusion (20) on the radial inner wall of the inner tube (11) and the middle tube (12). The inner walls of the middle tube (12) and the outer tube (13) corresponding to the second limiting part (A) and the third limiting part (B) are formed with circumferentially distributed limiting protrusions (30).

8. The instant smoking system adapted to ultrasonic scalpels of different lengths as described in claim 7, characterized in that: The inner tube (11) includes a front section (111) at the front end and a first flared section (112) connected to the rear end of the front section (111), wherein the diameter of the front section (111) is smaller than the diameter of the first flared section (112); The middle tube (12) includes a first constricted section (121) at the front end, a second flared section (123) at the rear end, and a middle section (122) connecting the first constricted section (121) and the second flared section (123). The diameter of the first constricted section (121) is smaller than the diameter of the middle section (122) and the diameter of the second flared section (123). The outer tube (13) includes a second constricted section (131) at the front end and a rear section (132) connected to the rear end of the second constricted section (131), wherein the diameter of the second constricted section (131) is smaller than the diameter of the rear section (132); The second limiting part (A) is located in the middle section (122), the third limiting part (B) is located in the rear section (132), the fourth limiting part (C) is located in the first flared section (112), and the fifth limiting part (D) is located in the second flared section (123). The first flared section (112) is clearance-fitted with the connecting section, and the outer diameter of the first flared section (112) is larger than the inner diameter of the first constricted section (121); The second flared section (123) is clearance-fitted with the rear section (132), and the outer diameter of the second flared section (123) is larger than the inner diameter of the second constricted section (131).

9. The instant smoking system adapted to ultrasonic scalpels of different lengths as described in claim 1, characterized in that: It also includes an ultrasonic interface (5), which is fixedly connected to the rear end of the smoking tube (1), and the blade can be inserted into the smoking channel through the ultrasonic interface (5).

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