An attractive electrocoagulation and electrosurgery pen

Abstract

This invention relates to the field of medical device technology, specifically to an aspirable electrocoagulation and electrosurgical pen; it includes a blade assembly, an electrode assembly, a suction assembly, and a handle assembly. The electrode assembly includes a control board and an electrode tube. The control board is integrated inside the handle assembly, which also has a control button. The electrode tube is disposed inside the handle assembly and extends outward along the axial direction of the handle assembly. The extended end of the electrode tube is the working end of the handle assembly. The blade assembly is detachably connected to the extended end of the electrode tube. The suction assembly is disposed at the non-working end of the handle assembly and is connected to the electrode tube through a suction pipe. A power cord is connected to the control board, and the electrode assembly is electrically connected to an external electrosurgical unit through the power cord. The electrode tube is connected to an external negative pressure suction device through the suction pipe. This device can achieve efficient electrocoagulation and electrosurgical cutting, and also has excellent anti-clogging characteristics.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an attractable electrocoagulation and electrosurgical pen. Background Technology

[0002] Liver surgery involves the treatment of various diseases such as liver cancer, hepatic hemangioma, liver abscess, and liver trauma. The surgery often requires precise resection of diseased tissue, coagulation management, and timely cleaning of blood, tissue debris, and fumes generated by electrocoagulation and resection in the surgical area. The liver has a rich blood supply, resulting in rapid and significant bleeding during surgery. Delayed coagulation can lead to blurred vision and increase surgical risks. Furthermore, the fumes generated by electrocoagulation and resection can obstruct vision, affecting surgical precision. Additionally, the mixture of blood and tissue debris easily forms a viscous substance, making it difficult for traditional instruments to simultaneously achieve efficient electrocoagulation and resection, suction cleaning, and anti-clogging functions.

[0003] While conventional electrosurgical scalpels in liver surgery possess electrocoagulation and electroresection functions, they lack a targeted suction design, requiring additional suction devices for operation. This increases the complexity of the surgical procedure and increases the risk of instrument interference. Some electrosurgical scalpels with suction functions use a single suction channel, which is prone to blockage when dealing with large amounts of blood and viscous tissue debris during liver surgery. This results in smoke not being able to escape in time, reduced visual clarity, and consequently affects surgical efficiency and safety. At the same time, the existing scalpel head structure is not fully adapted to the anatomical characteristics of liver tissue and the needs of surgical operation. It is not effective in cutting irregular lesions and in coagulation, making it difficult to balance surgical precision and tissue preservation, causing many inconveniences in liver surgery. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art and provide an attractive electrocoagulation and electrocutting pen that enables efficient electrocoagulation and electrocutting while also possessing excellent anti-clogging characteristics.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0006] An aspirable electrocautery and electrosurgery pen includes a blade assembly, an electrode assembly, a suction assembly, and a handle assembly. The electrode assembly includes a control board and an electrode tube. The control board is integrated inside the handle assembly, and the handle assembly is also provided with a control button for controlling the control board. The electrode tube is disposed inside the handle assembly and extends outward along the axial direction of the handle assembly. The extended end of the electrode tube is the working end of the handle assembly. The blade assembly is detachably connected to the extended end of the electrode tube. The suction assembly is disposed at the non-working end of the handle assembly and is connected to the electrode tube through a suction pipe. A power cord is connected to the control board, and the electrode assembly is electrically connected to an external electrosurgical unit through the power cord. The electrode tube is connected to an external negative pressure suction device through the suction pipe.

[0007] Preferably, the electrode tube has a hollow structure, with the end extending from the working end of the handle assembly being an oblique cylinder. The protruding end of the oblique cylinder is the electrocutting part of the electrode tube, and the tube walls on both sides of the oblique cylinder are the electrocoagulation parts of the electrode tube.

[0008] Preferably, the cutter head assembly includes a tubular mounting portion and a spherical cutter head, the spherical cutter head and the tubular mounting portion are fixedly connected by a connecting section, and the cutter head assembly is detachably connected to the hollow structure of the working end of the electrode tube through the tubular mounting portion.

[0009] Preferably, the spherical cutter head includes an angled spherical electrocoagulation part and an electrocutting edge protruding from the spherical electrocoagulation part. The electrocutting edge and the spherical electrocoagulation part are integrated into one piece. The spherical electrocoagulation part is fixedly connected to the connecting section. The angle of the spherical electrocoagulation part is the same as the angle of the oblique tangent surface of the inclined cylinder at the end of the electrode tube.

[0010] Preferably, the gap between the spherical electrocoagulation part and the oblique cylinder at the end of the electrode tube is an attraction part, which is connected to the hollow structure inside the electrode tube through the tubular structure of the tubular mounting part, and the protruding position of the electrocutting edge on the spherical electrocoagulation part is beyond the axial extension position of the electrode tube.

[0011] Preferably, a shell-shaped cutter head can be detachably connected to the working end of the electrode tube. A tubular mounting part is fixedly connected to the shell-shaped cutter head, and the shell-shaped cutter head is installed in the hollow structure of the electrode tube through the tubular mounting part. The shell-shaped cutter head includes two sets of symmetrically arranged shell-shaped electrocoagulation parts. The shell-shaped electrocoagulation parts are tightly fitted to the end of the electrode tube. Each set of shell-shaped electrocoagulation parts is provided with an electrocutting edge. The gap between the two electrocutting edges is an attraction slit. The shell-shaped cutter head communicates with the hollow structure inside the electrode tube through the attraction slit.

[0012] Preferably, the electrode tube is provided with a dual attraction channel, which includes a main attraction channel and two secondary attraction channels. The main attraction channel is coaxially disposed inside the electrode tube, and the secondary attraction channels are symmetrically disposed on both sides of the main attraction channel. Both the main attraction channel and the secondary attraction channels are connected to the attraction pipe.

[0013] Preferably, the diameter of the main suction channel is larger than the diameter of the secondary suction channel, and the extension length of the main suction channel is longer than that of the secondary suction channel; a first channel and a second channel are also sequentially arranged in the extension direction inside the secondary suction channel, and the first channel and the second channel are connected by a constriction section, wherein the diameter of the first channel is smaller than the diameter of the second channel, and the second channel is located at the opening position of the extension end of the secondary suction channel.

[0014] Preferably, the control board is provided with a conductive element, and the electrode tube is electrically connected to the control board through the conductive element; the conductive element includes a fixing part and a contact part, the fixing part and the contact part are connected by an elastic part, the conductive element is fixedly connected to the control board through the fixing part, and the contact part is tightly attached to the outer wall of the electrode tube by the elastic force of the elastic part, and the outer wall of the electrode tube extending outside the handle assembly is also wrapped with an insulating tube.

[0015] Preferably, an adjustment knob is rotatably connected to the end of the handle assembly facing the working end. A snap-fit ​​ring is fixedly provided inside the adjustment knob. The electrode tube is inserted into and snap-fitted into the snap-fit ​​ring. The extension direction of the elastic part on the conductive element is the same as the insertion direction of the electrode tube. An annular fitting part is also provided on the inner wall of the snap-fit ​​ring. The inner diameter of the fitting part is smaller than the outer diameter of the electrode tube.

[0016] In summary, the beneficial effects of this invention are as follows:

[0017] 1. The present invention provides an aspirable electrocoagulation and electrosurgical pen equipped with two detachable blades: a spherical blade and a shell-shaped blade. The electrocutting edges and ridges on the blades enable precise electrocutting and scraping of liver lesions, adapting to the anatomical structure of liver tissue and the needs of different surgical scenarios. The spherical and shell-shaped electrocoagulation sections enable large-area, efficient electrocoagulation, quickly controlling bleeding points during liver surgery. It is particularly suitable for surgical operations in areas of the liver with rich blood supply, effectively reducing intraoperative bleeding, improving surgical safety, and enhancing the clinical applicability of the instrument in liver surgery.

[0018] 2. The electrocoagulation and electrosurgical pen described in this invention adopts a dual suction channel design with main and auxiliary channels. The main suction channel has a larger diameter and a longer extension length, which can efficiently aspirate the large amount of blood and viscous tissue debris generated during liver surgery. The auxiliary suction channels are symmetrically distributed on both sides of the main channel, focusing on absorbing the smoke generated by electrocoagulation and electrosurgical cutting, realizing the separation and aspiration of blood, debris and smoke. This fundamentally solves the problems of easy blockage of single channels and smoke obstructing the field of vision, ensuring that the surgical field of vision in liver surgery is always clear, improving the accuracy of surgery, and reducing the risk of damage to normal liver tissue due to poor field of vision.

[0019] 3. The electrocoagulation and electrosurgical pen described in this invention has a structural design of the first and second channels within the auxiliary suction channel. This design utilizes Bernoulli's principle to increase the suction speed after the smoke is drawn into the channel, thereby improving the speed of smoke extraction. This avoids harmful substances in the smoke from affecting the health of medical staff, while also further ensuring the clarity of the surgical field of vision. This provides favorable conditions for delicate operations in liver surgery (such as the resection of small tumors and the treatment of vascular anastomoses).

[0020] 4. The electrocoagulation and electrosurgical pen described in this invention allows for flexible adjustment of the blade assembly angle via a knob, adapting to the surgical needs of different parts and depths of the liver. The electrode tube supports plug-and-play replacement, allowing for switching between different blades depending on the type of surgery (such as partial hepatectomy, liver tumor ablation, liver trauma repair, etc.), eliminating the need to replace the entire set of instruments, simplifying the surgical procedure, reducing medical costs, and improving the versatility and practicality of the instrument in various liver surgeries. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the electric knife pen of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the electric knife pen of the present invention;

[0023] Figure 3 This is a schematic diagram of the electrode tube structure of the electric knife pen of the present invention;

[0024] Figure 4 This is a schematic diagram of the spherical blade head structure of the electric knife pen of the present invention;

[0025] Figure 5 This is a schematic diagram of the spherical blade mounting structure of the electric knife pen of the present invention;

[0026] Figure 6 This is a schematic diagram of the shell-shaped blade mounting structure of the electric knife pen of the present invention;

[0027] Figure 7 This is a schematic diagram of the suction channel structure of the electrosurgical pen of the present invention;

[0028] Figure 8 This is a schematic diagram of the conductive component mounting structure of the electric knife pen of the present invention;

[0029] Figure 9 This is a schematic diagram of the electrode tube adjustment structure of the electric scalpel pen of the present invention.

[0030] The diagram shows the following markings: 1. Blade assembly; 11. Tubular mounting section; 12. Spherical blade; 121. Spherical electrocoagulation section; 122. Electrocutting edge; 123. Suction section; 13. Connecting section; 14. Shell-shaped blade; 141. Shell-shaped electrocoagulation section; 142. Electrocutting edge; 143. Suction seam; 2. Electrode assembly; 21. Control board; 22. Electrode tube; 221. Electrocutting section; 222. Electrocoagulation section; 23. Power cord; 24. Conductive component; 241. Fixing part; 242. Contact part; 243. Elastic part; 25. Insulating tube; 3. Suction assembly; 31. Suction pipe; 32. Main suction channel; 33. Secondary suction channel; 331. First channel; 332. Contraction section; 333. Second channel; 4. Handle assembly; 41. Control button; 42. Adjustment knob; 43. Snap-fit ​​ring; 431. Fitting part. Detailed Implementation

[0031] The following specific embodiments are merely illustrative of the present invention and are not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present invention.

[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] Example 1

[0034] according to Figure 1 , Figure 2 As shown, an aspirable electrocautery and electrosurgery pen includes a blade assembly 1, an electrode assembly 2, an aspiration assembly 3, and a handle assembly 4. The electrode assembly 2 includes a control board 21 and an electrode tube 22. The control board 21 is integrated inside the handle assembly 4, and the handle assembly 4 is also provided with a control button 41 for operating the control board 21. The electrode tube 22 is disposed inside the handle assembly 4 and extends out along the axial direction of the handle assembly 4. The extended end of the electrode tube 22 is the working end of the handle assembly 4. The blade assembly 1 is detachably connected to the extended end of the electrode tube 22. The aspiration assembly 3 is disposed at the non-working end of the handle assembly 4 and is connected to the electrode tube 22 through an aspiration pipe 31. A power cord 23 is connected to the control board 21. The electrode assembly 2 is electrically connected to an external electrosurgical unit through the power cord 23, and the electrode tube 22 is connected to an external negative pressure aspiration device through the aspiration pipe 31.

[0035] according to Figure 3As shown, the electrode tube 22 has a hollow structure, and the end extending from the working end of the handle assembly 4 is a slanted cylinder. The protruding end of the slanted cylinder is the electro-cutting part 221 of the electrode tube 22, and the tube walls on both sides of the slanted cylinder are the electrocoagulation parts 222 of the electrode tube 22. The control board 21 of the electrosurgical pen is integrated inside the handle assembly 4. It is made of PCB board material and integrates electrocoagulation and electro-cutting modules on the surface. The mode is switched by the control button 41 on the handle assembly 4. The electrode tube 22 is set through the handle assembly 4. Its front end extends out as the working end, and its rear end is connected to the external negative pressure suction device through the suction pipe 31. The electrode tube 22 has a hollow structure, which serves as both the current conduction path and part of the suction channel. The working end of the electrode tube 22 has a slanted cylindrical structure. When the blade assembly 1 is not installed on the electrode tube 22, the protruding end of the slanted cylinder can be used as the electro-cutting part 221 to electro-cut the surgical site, while the tube walls on both sides of the slanted cylinder can be used as the electrocoagulation parts 222 for electrocoagulation.

[0036] according to Figure 4 , Figure 5 As shown, the cutter head assembly 1 includes a tubular mounting portion 11 and a spherical cutter head 12. The spherical cutter head 12 is fixedly connected to the tubular mounting portion 11 via a connecting section 13. The cutter head assembly 1 is detachably connected to the hollow structure of the working end of the electrode tube 22 via the tubular mounting portion 11. The spherical cutter head 12 includes an angled spherical electrocoagulation portion 121 and an electrocutting ridge 122 protruding from the spherical electrocoagulation portion 121. The electrocutting ridge 122 and the spherical electrocoagulation portion 121 are integrated into a single design. The electrocoagulation section 121 is fixedly connected to the connecting section 13. The angle of the spherical electrocoagulation section 121 is the same as the angle of the oblique tangent of the end of the electrode tube 22. The gap between the spherical electrocoagulation section 121 and the end of the oblique cylinder of the electrode tube 22 is the attraction section 123. The attraction section 123 is connected to the hollow structure inside the electrode tube 22 through the tubular structure of the tubular mounting section 11. The protruding position of the electrocutting edge 122 on the spherical electrocoagulation section 121 is beyond the axial extension position of the electrode tube 22.

[0037] The cutter head assembly 1 is detachably connected to the working end of the electrode tube 22 and is fixed by a gap fit between the tubular mounting part 11 and the inner wall of the electrode tube 22. The spherical cutter head 12 is fixedly connected to the tubular mounting part 11 through the connecting section 13, and the three are integrally formed. The spherical cutter head 12 includes a spherical electrocoagulation part 121 with an inclined angle and an electric cutting edge 122 extending from the spherical electrocoagulation part 121 along the inclined angle. The electric cutting edge 122 and the spherical electrocoagulation part 121 are integrally formed to ensure structural strength and conductivity uniformity. The angle of inclination of the spherical electrocoagulation part 121 is the same as the angle of the inclined cylindrical cut surface at the front end of the electrode tube 22. The gap between the electrode tube 22 and the oblique cylinder at the end is the suction part 123. The size of the suction part 123 can be adjusted by adjusting the installation depth of the blade assembly 1. The suction part 123 is connected to the inside of the electrode tube 22 through the hollow structure of the tubular mounting part 11. The protrusion height of the electric cutting edge 122 exceeds the oblique cutting surface position at the front end of the electrode tube 22, ensuring that the electric cutting edge 122 contacts the tissue preferentially during cutting, thereby improving cutting efficiency. The spherical blade head 12 has a structural design that, compared with traditional blade heads, provides a large-area electrocoagulation effect, enabling rapid electrocoagulation for specific surgeries and improving surgical efficiency.

[0038] according to Figure 6 As shown, a shell-shaped cutter head 14 can also be detachably connected to the working end of the electrode tube 22. A tubular mounting part 11 is fixedly connected to the shell-shaped cutter head 14. The shell-shaped cutter head 14 is installed in the hollow structure of the electrode tube 22 through the tubular mounting part 11. The shell-shaped cutter head 14 includes two sets of symmetrically arranged shell-shaped electrocoagulation parts 141. The shell-shaped electrocoagulation parts 141 are tightly fitted to the end of the electrode tube 22. Each set of shell-shaped electrocoagulation parts 141 is provided with an electric cutting edge 142. The gap between the two electric cutting edges 142 is an attraction slit 143. The shell-shaped cutter head 14 communicates with the hollow structure inside the electrode tube 22 through the attraction slit 143.

[0039] The blade assembly 1 also provides a shell-shaped blade 14, which is suitable for electrocoagulation and scraping operations with a larger contact area. The shell-shaped blade 14 is also set on the tubular mounting part 11 and is fixed to the working end of the electrode tube 22 by plugging and snapping. It includes two sets of symmetrically arranged shell-shaped electrocoagulation parts 141, whose inner surfaces are tightly fitted with the front end of the electrode tube 22. The two sides of the shell-shaped electrocoagulation parts 141 are sharp electrocutting edges 142 for realizing electrocutting and scraping functions. A longitudinal suction slit 143 is provided between the two sets of shell-shaped electrocoagulation parts 141. The suction slit 143 is connected to the hollow structure inside the electrode tube 22 to realize the suction function. During electrocoagulation, the tissue is electrocoagulated through the two sets of shell-shaped electrocoagulation parts 141.

[0040] Example 2

[0041] The difference from Embodiment 1 above is that, according to Figure 7As shown, the electrode tube 22 is provided with a dual suction channel, which includes a main suction channel 32 and two auxiliary suction channels 33. The main suction channel 32 is coaxially arranged inside the electrode tube 22, and the auxiliary suction channels 33 are symmetrically arranged on both sides of the main suction channel 32. Both the main suction channel 32 and the auxiliary suction channels 33 are connected to the suction pipe 31. The diameter of the main suction channel 32 is larger than the diameter of the auxiliary suction channel 33, and the extension length of the main suction channel 32 is longer than that of the auxiliary suction channel 33. The auxiliary suction channel 33 is also provided with a first channel 331 and a second channel 333 in sequence along the extension direction. The first channel 331 and the second channel 333 are connected by a constriction section 332. The diameter of the first channel 331 is smaller than the diameter of the second channel 333, and the second channel 333 is located at the opening of the extension end of the auxiliary suction channel 33.

[0042] To address the issue of viscous tissue fluid and debris clogging during surgery, the suction component 3 utilizes dual suction channels to efficiently separate and aspirate mucus, debris, and smoke. The main suction channel 32 is coaxially positioned at the center of the electrode tube 22, has a larger diameter, and extends longer than the secondary suction channel 33. Its suction port extends to the proximal end of the blade assembly 1, primarily used for aspirating mucus and debris. The inner wall of the channel is polished to reduce clogging. Two secondary suction channels 33 are symmetrically distributed on either side of the main suction channel 32, with smaller diameters, primarily used to absorb smoke generated during electrocoagulation and electrocautery. The extension length is less than that of the main suction channel 32, which can prevent the secondary suction channel 33 from absorbing substances such as mucus or debris. Each secondary suction channel 33 is provided with a first channel 331, a constriction section 332 and a second channel 333 in sequence along the extension direction. The first channel 331 has a smaller diameter and the second channel 333 has a larger diameter. The two are connected by a conical constriction section 332. This structure is based on Bernoulli's principle. When the airflow passes through the constriction section 332, the flow velocity increases, forming a local negative pressure, which accelerates the smoke extraction, improves the smoke extraction efficiency, and prevents the accumulation of surgical smoke from affecting the surgical field of vision.

[0043] Example 3

[0044] The difference from Embodiments 1 and 2 above is that, according to Figure 8 , Figure 9As shown, a conductive element 24 is provided on the control board 21, and the electrode tube 22 is electrically connected to the control board 21 through the conductive element 24. The conductive element 24 includes a fixing part 241 and a contact part 242, which are connected by an elastic part 243. The conductive element 24 is fixedly connected to the control board 21 through the fixing part 241, and the contact part 242 is tightly fitted to the outer wall of the electrode tube 22 by the elastic force of the elastic part 243. The electrode tube 22 extends out of the handle assembly 4. The outer wall is also wrapped with an insulating tube 25; an adjustment knob 42 can also be rotatably connected to the end of the handle assembly 4 facing the working end, and a snap ring 43 is fixedly provided inside the adjustment knob 42. The electrode tube 22 is inserted and snapped into the snap ring 43. The extension direction of the elastic part 243 on the conductive part 24 is the same as the insertion direction of the electrode tube 22. An annular fitting part 431 is also provided on the inner wall of the snap ring 43. The inner diameter of the fitting part 431 is smaller than the outer diameter of the electrode tube 22.

[0045] The electrode tube 22 is made of a highly conductive material, and an insulating tube 25 is fitted on the tube wall exposed outside the handle assembly 4 to prevent accidental electric shock. The control board 21 is electrically connected to the electrode tube 22 through a conductive component 24. The conductive component 24 includes a fixing part 241, an elastic part 243, and a contact part 242, which are integrally formed. The fixing part 241 can be fixedly connected to the control board 21 by welding or screw connection. The contact part 242 is set as a lateral contact or contour contact that is wider than the electrode tube 22, and it is tightly attached to the outer wall of the electrode tube 22 by the elastic force of the elastic part 243 to ensure stable circuit conduction. An adjustment knob 42 for adjusting the direction of the cutter head assembly 1 is also provided on the end of the handle assembly 4 facing the working end. The adjustment knob 42 is embedded and fixed with a retaining ring 43, which is made of rubber and has a rubber inner wall. The annular fitting part 431 is used to fix the electrode tube 22 by inserting it into the retaining ring 43. The inner diameter of the fitting part 431 inside the retaining ring 43 is slightly smaller than the outer diameter of the electrode tube 22, thereby achieving a tight fit of the electrode tube 22 and preventing displacement during the operation. The tail of the electrode tube 22 can also be fixedly connected to a suction tube and a suction tube 31. The electrode tube 22 is set inside the handle assembly 4 as a telescopic structure. The user can insert and remove the electrode tube 22 through the insulating tube 25 to fix it, thereby adjusting the telescopic length of the electrode tube 22 to meet the telescopic needs of the electrode tube 22 during the operation. By rotating the adjustment knob 42, the electrode tube 22 can be rotated to adjust the angle of the blade assembly 1 to meet the needs of different surgical angles. Different types of electrode tubes 22 and blade assemblies 1 can also be replaced at any time according to the needs of the operation.

Claims

1. An attractive electrocoagulation and electrocutting scalpel, characterized in that, The device includes a blade assembly (1), an electrode assembly (2), a suction assembly (3), and a handle assembly (4). The electrode assembly (2) includes a control board (21) and an electrode tube (22). The control board (21) is integrated inside the handle assembly (4). The handle assembly (4) is also provided with a control button (41) for controlling the control board (21). The electrode tube (22) is disposed inside the handle assembly (4) and extends out along the axial direction of the handle assembly (4). The extended end of the electrode tube (22) The handle assembly (4) is the working end of the handle assembly (4). The blade assembly (1) is detachably connected to the extended end of the electrode tube (22). The suction assembly (3) is located at the non-working end of the handle assembly (4) and is connected to the electrode tube (22) through the suction pipe (31). A power cord (23) is connected to the control board (21). The electrode assembly (2) is electrically connected to the external electrosurgical unit through the power cord (23). The electrode tube (22) is connected to the external negative pressure suction device through the suction pipe (31). The electrode tube (22) has a hollow structure. The end extending from the working end of the handle assembly (4) is an oblique cylinder. The protruding end of the oblique cylinder is the electrocutting part (221) of the electrode tube (22), and the tube walls on both sides of the oblique cylinder are the electrocoagulation part (222) of the electrode tube (22). The cutter head assembly (1) includes a tubular mounting part (11) and a spherical cutter head (12). The spherical cutter head (12) and the tubular mounting part (11) are fixedly connected by a connecting section (13). The cutter head assembly (1) is detachably connected to the hollow structure of the working end of the electrode tube (22) through the tubular mounting part (11). The spherical cutter head (12) includes a spherical electrocoagulation part (121) with an angle and an electrocutting edge (122) protruding from the spherical electrocoagulation part (121). The electrocutting edge (122) and the spherical electrocoagulation part (121) are integrated. The spherical electrocoagulation part (121) is fixedly connected to the connecting section (13). The angle of the spherical electrocoagulation part (121) is the same as the angle of the oblique tangent of the inclined cylinder at the end of the electrode tube (22). Alternatively, a shell-shaped cutter head (14) can be detachably connected to the working end of the electrode tube (22). A tubular mounting part (11) is fixedly connected to the shell-shaped cutter head (14). The shell-shaped cutter head (14) is installed in the hollow structure of the electrode tube (22) through the tubular mounting part (11). The shell-shaped cutter head (14) includes two sets of symmetrically arranged shell-shaped electrocoagulation parts (141). The shell-shaped electrocoagulation parts (141) are tightly fitted to the end of the electrode tube (22). Each set of shell-shaped electrocoagulation parts (141) is provided with an electric cutting edge (142). The gap between the two electric cutting edges (142) is an attraction slit (143). The shell-shaped cutter head (14) is connected to the hollow structure inside the electrode tube (22) through the attraction slit (143).

2. The attractive electrocoagulation and electrocutting scalpel pen according to claim 1, characterized in that, The gap between the spherical electrocoagulation part (121) and the oblique cylinder at the end of the electrode tube (22) is the attraction part (123). The attraction part (123) is connected to the hollow structure inside the electrode tube (22) through the tubular structure of the tubular mounting part (11). The protruding position of the electrocutting edge (122) on the spherical electrocoagulation part (121) is beyond the axial extension position of the electrode tube (22).

3. The attractive electrocoagulation and electrocutting scalpel pen according to claim 1, characterized in that, The electrode tube (22) is provided with a dual attraction channel, which includes a main attraction channel (32) and two auxiliary attraction channels (33). The main attraction channel (32) is coaxially disposed inside the electrode tube (22), and the auxiliary attraction channels (33) are symmetrically disposed on both sides of the main attraction channel (32). Both the main attraction channel (32) and the auxiliary attraction channels (33) are connected to the attraction pipe (31).

4. An attractive electrocoagulation and electrocutting scalpel pen according to claim 3, characterized in that, The diameter of the main suction channel (32) is larger than that of the secondary suction channel (33), and the extension length of the main suction channel (32) is longer than that of the secondary suction channel (33). The secondary suction channel (33) is also provided with a first channel (331) and a second channel (333) in sequence along the extension direction. The first channel (331) and the second channel (333) are connected by a constriction section (332). The diameter of the first channel (331) is smaller than that of the second channel (333), and the second channel (333) is located at the opening of the extension end of the secondary suction channel (33).

5. An attractive electrocoagulation and electrocutting scalpel pen according to claim 1, characterized in that, The control board (21) is provided with a conductive element (24), and the electrode tube (22) is electrically connected to the control board (21) through the conductive element (24). The conductive element (24) includes a fixing part (241) and a contact part (242). The fixing part (241) and the contact part (242) are connected by an elastic part (243). The conductive element (24) is fixedly connected to the control board (21) through the fixing part (241), and the contact part (242) is tightly attached to the outer wall of the electrode tube (22) by the elastic force of the elastic part (243). The outer wall of the electrode tube (22) extending out of the handle assembly (4) is also wrapped with an insulating tube (25).

6. An attractive electrocoagulation and electrocutting scalpel pen according to claim 5, characterized in that, An adjustment knob (42) is rotatably connected to the end of the handle assembly (4) facing the working end. A snap ring (43) is fixedly provided inside the adjustment knob (42). The electrode tube (22) is inserted into and snapped into the snap ring (43). The extension direction of the elastic part (243) on the conductive part (24) is the same as the insertion direction of the electrode tube (22). An annular fitting part (431) is also provided on the inner wall of the snap ring (43). The inner diameter of the fitting part (431) is smaller than the outer diameter of the electrode tube (22).

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