Medical split type high-frequency electrotome

Abstract

The invention relates to the technical field of medical equipment, in particular to a medical split type high-frequency electrotome which comprises an operation part and a knife head arranged at one end of the operation part, a mounting groove is formed in one end of the operation part, the knife head is clamped in the mounting groove, a sliding ring groove is formed in the operation part, and the sliding ring groove is formed in the outer side of the mounting groove; a plurality of mounting openings are annularly formed between the mounting groove and the sliding ring groove, limiting assemblies are arranged in the mounting openings correspondingly, each limiting assembly comprises a limiting block and two elastic pieces, and the two elastic pieces are fixedly connected to the upper side edge and the lower side edge of the limiting block correspondingly and fixedly connected to the sides, close to the sliding ring groove, of the mounting openings; the limiting blocks are clamped in the mounting openings, a ring groove is formed in the fixed end of the tool bit, and the multiple limiting blocks are used for being clamped in the ring groove, the high-temperature tool bit is protected, the situation that the tool bit is touched by mistake can be avoided, and the use safety of medical staff is improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a medical split-type high-frequency electrosurgical unit. Background Technology

[0002] A high-frequency electrosurgical unit is an electrosurgical instrument that replaces a mechanical scalpel for tissue cutting. It heats tissue by generating a high-frequency, high-voltage current at the tip of an effective electrode when it comes into contact with the body. A split-type high-frequency electrosurgical unit includes a main unit, a control unit, and a foot switch. The split-type motor can quickly switch modes, adjust power, and start and stop output, greatly improving the smoothness and efficiency of surgical operations.

[0003] Patent CN112237476A discloses a high-frequency electrosurgical unit, including a sheath, a first electrode, an insulating connector, a second electrode, and a conductive component. The conductive component is fixedly connected to the distal end of the sheath. The first electrode is connected to the distal end of the sheath and can extend and retract along the axial direction of the sheath. The electrical connection between the conductive component and the first electrode remains conductive. The proximal end of the insulating connector is connected to the distal end of the first electrode. This invention can reduce the steps medical staff need to take when changing instruments during surgery, helping to shorten surgical time and reduce patient suffering.

[0004] However, because the electrosurgical unit generates high temperatures after use, and the tip is usually exposed, medical personnel may accidentally touch it during use, which could cause injury and pose a safety hazard. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies where the cutting head generates high temperatures and is generally exposed, potentially leading to accidental contact by medical personnel and causing injury, thus posing a safety hazard. Therefore, this invention proposes a medical split-type high-frequency electrosurgical unit.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A medical split-type high-frequency electrosurgical unit includes: an operating part and a cutting head disposed at one end of the operating part. The operating part has a mounting groove at one end, and the cutting head is engaged inside the mounting groove. The operating part has a sliding ring groove disposed outside the mounting groove.

[0008] Multiple mounting openings are provided in a ring shape between the mounting groove and the sliding ring groove. Each of the multiple mounting openings is provided with a limiting component. The limiting component includes a limiting block and two elastic pieces. The two elastic pieces are fixedly connected to the upper and lower sides of the limiting block and fixedly connected to the side of the mounting opening near the sliding ring groove. The limiting block is locked inside the mounting opening. The fixed end of the cutter head is provided with a ring groove, and the multiple limiting blocks are used to be locked inside the ring groove.

[0009] A protective tube is provided inside the sliding annular groove, and a telescopic component is provided at the bottom of the protective tube. An extrusion groove is provided on the inner side of the protective tube. The extrusion groove is in the shape of an inverted frustum and is used to extrude the limiting block during the downward movement.

[0010] Preferably, the telescopic component includes an energized spiral tube, a bottom magnetic ring, and an upper magnetic ring. The upper magnetic ring is fixedly connected to the bottom end of the protective tube, the bottom magnetic ring is fixedly connected to the bottom of the sliding ring groove, and the energized spiral tube is fixedly connected between the bottom magnetic ring and the upper magnetic ring.

[0011] Preferably, the operating part is provided with a counterweight cavity, which is located below the mounting groove, and a counterweight component is provided inside the counterweight cavity.

[0012] Preferably, the counterweight assembly includes a connecting rod and a counterweight tube. The connecting rod is vertically fixed inside the counterweight cavity, and its end passes through the counterweight cavity and is disposed inside the mounting groove. The connecting rod is used to energize the cutter head, and the counterweight tube is slidably disposed on the connecting rod for adjusting the center of gravity of the operating part.

[0013] Preferably, the upper end of the connecting rod is provided with an upper buffer, which is used to buffer the counterweight tube when it moves toward the cutter head.

[0014] Preferably, the upper buffer component includes a buffer spring, a compression ring, and a limiting ring. The buffer spring is fixedly connected between the compression ring and the limiting ring. The compression ring is close to the counterweight tube, and the limiting ring is fixedly connected to the top wall of the counterweight cavity.

[0015] Preferably, the upper side of the counterweight cavity is provided with a plurality of sliding openings that communicate with the sliding ring groove. The extrusion ring is provided with an extrusion assembly, which is used to extrude the limiting block. The extrusion assembly includes a plurality of connecting rods and an extrusion plate. The extrusion plate is sleeved on the inner ring of the sliding ring groove and is located inside the extrusion groove of the protective tube. The plurality of connecting rods are fixedly connected between the extrusion plate and the extrusion ring and are slidably disposed inside the sliding opening.

[0016] Preferably, a buffer airbag ring is fitted under the connecting rod. The buffer airbag ring is a foldable airbag with multiple air holes on the top side.

[0017] Preferably, the protective tube has multiple air guiding channels arranged in a ring on its side, with the bottom end of each air guiding channel located inside the extrusion groove and the top end of each air guiding channel located on the inner wall of the upper end of the protective tube.

[0018] Preferably, the end of the operating part away from the cutter head is provided with a threaded groove, and a connecting wire is provided inside the threaded groove. The connecting wire is used to connect the operating part and the control console.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. When the blade is needed, the protective tube moves into the sliding ring groove. During the movement, the protective tube presses multiple limiting blocks inward through the top of the inverted frustum-shaped extrusion groove, thereby fixing the blade. After use, the protective tube slides outward, and the extrusion groove separates from the limiting blocks, facilitating quick disassembly and replacement of the blade. This invention protects the high-temperature blade, preventing accidental contact with the blade and improving the safety of medical personnel.

[0021] 2. By installing a telescopic component below the protective tube, when the electric knife starts working, the energized spiral tube is energized, generating magnetic force. At the same time, the energized spiral tube contracts, driving the bottom magnetic ring and the upper magnetic ring to move relative to each other. The two magnetic rings approach and attract each other, thereby driving the protective tube to extend and retract, ensuring that the limit block is stably locked in the extrusion groove, and improving the stability and safety of the overall structure.

[0022] 3. After use, the energized spiral tube is de-energized. Because the outer side of the energized spiral tube is equipped with an elastic outer skin, it has a certain degree of elasticity. After the power is de-energized, the energized spiral tube returns to its original state, thereby causing the bottom magnetic ring and the upper magnetic ring to move away from each other. This pushes the protective tube back to the outside of the sliding ring groove, covering the high-temperature cutting head and preventing accidental contact with the high-temperature cutting head, thus improving the safety of using the electric knife.

[0023] 4. In actual operation, with the cutter head facing downwards, the configuration tube that is slidably mounted on the connecting rod will slide towards the cutter head, thereby shifting the center of gravity of the operating unit towards the cutter head, thus improving the user's comfort and allowing for more precise control of the cutter head.

[0024] 5. During the sliding process of the configuration tube towards the cutter head, the configuration tube contacts the elastic compression ring. By compressing the buffer spring, the impact force generated by the movement can be directly converted into elastic storage, which not only reduces noise, but also slows down the movement speed and reduces discomfort.

[0025] 6. When the cutter head is facing down, the counterweight will contact the extrusion ring, thereby pushing the extrusion assembly fixedly connected to the extrusion ring to move. The connecting rod slides inside the slide, thereby moving the extrusion plate towards the position of the limiting block. The limiting block is extruded and strengthened by the inclined extrusion plate, thereby strengthening the extrusion and limiting between the limiting block and the cutter head ring groove, and preventing the cutter head from falling due to inertia when not powered on.

[0026] When the work is completed and the cutter head is facing upwards, ready to disassemble the cutter head, the cutter head is in a high-temperature state due to the power supply. It needs to be cooled down before it can be disassembled. At this time, the counterweight tube will continuously discharge gas by squeezing the buffer airbag ring. The ejected gas moves into the squeezing groove of the protective tube through the sliding port. Through the air guide channel, the squeezed gas is sprayed onto the high-temperature cutter head through the other end of the air guide channel, which provides initial cooling to the cutter head and shortens the time for disassembling the cutter head. Attached Figure Description

[0027] Figure 1 This is a front structural diagram of a medical split-type high-frequency electrosurgical unit proposed in this invention;

[0028] Figure 2 This is a schematic diagram of the unfolded structure of a medical split-type high-frequency electrosurgical unit proposed in this invention;

[0029] Figure 3 This is a schematic diagram of the protective tube structure of a medical split-type high-frequency electrosurgical unit proposed in this invention;

[0030] Figure 4 This is a schematic diagram of the internal structure of the protective tube of a medical split-type high-frequency electrosurgical unit proposed in this invention;

[0031] Figure 5 This is a schematic diagram of the limiting component structure of a medical split-type high-frequency electrosurgical unit proposed in this invention;

[0032] Figure 6 This is a schematic diagram of the front structure of the telescopic component of a medical split-type high-frequency electrosurgical unit proposed in this invention.

[0033] Figure 7 This is a schematic diagram of the counterweight component structure of a medical split-type high-frequency electrosurgical unit proposed in this invention;

[0034] Figure 8 This is a schematic diagram of the extrusion assembly structure of a split-type high-frequency electrosurgical unit for medical use proposed in this invention;

[0035] Figure 9 This invention relates to a medical split-type high-frequency electrosurgical unit.

[0036] In the diagram: 1. Operating unit; 2. Cutting head; 3. Limiting assembly; 31. Limiting block; 32. Elastic sheet; 4. Protective tube; 5. Telescopic component; 51. Powered spiral tube; 52. Bottom magnetic ring; 53. Upper magnetic ring; 6. Counterweight assembly; 61. Connecting rod; 62. Counterweight tube; 7. Upper buffer component; 71. Buffer spring; 72. Compression ring; 73. Limiting ring; 8. Compression assembly; 81. Connecting rod; 82. Compression sheet; 9. Buffer airbag ring; 10. Air guide channel; 11. Connecting wire. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0038] The terms used in this invention, such as "upper," "lower," "left," "right," "middle," and "one," are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0039] Reference Figures 1-9 A medical split-type high-frequency electrosurgical unit includes: an operating part 1 and a blade head 2 disposed at one end of the operating part 1. The operating part 1 is provided with a mounting groove at one end, and the blade head 2 is locked inside the mounting groove. The operating part 1 is provided with a sliding ring groove, which is disposed outside the mounting groove.

[0040] Multiple mounting openings are provided in a ring shape between the mounting groove and the sliding ring groove. Each of the multiple mounting openings is provided with a limiting component 3. The limiting component 3 includes a limiting block 31 and two elastic pieces 32. The two elastic pieces 32 are fixedly connected to the upper and lower sides of the limiting block 31 and fixedly connected to the side of the mounting opening near the sliding ring groove. The limiting block 31 is locked inside the mounting opening. The fixed end of the cutter head 2 is provided with a ring groove, and the multiple limiting blocks 31 are used to be locked inside the ring groove.

[0041] A protective tube 4 is provided inside the sliding annular groove. A telescopic component 5 is provided at the bottom of the protective tube 4. An extrusion groove is provided on the inner side of the protective tube 4. The extrusion groove is in the shape of an inverted frustum and is used to extrude the limiting block 31 during the downward movement.

[0042] In the embodiments of the above technical solution, in order to prevent the high-temperature electric knife from being accidentally touched and causing injury to personnel during use, it is necessary to protect and block the blade head 2 of the electric knife when it is not in use. The high-temperature blade head 2 can be blocked by setting a protective tube 4.

[0043] Since different surgical procedures require different blades 2, in order to improve the speed and convenience of blade 2 replacement, when blade 2 is locked inside the mounting groove, multiple limiting blocks 31 are locked inside the annular groove of blade 2 to fix and limit blade 2 inside the mounting groove.

[0044] When the cutter head 2 is needed, the protective tube 4 will move into the sliding ring groove. During the movement, the protective tube 4 will press the multiple limit blocks 31 inward through the top of the inverted frustum-shaped extrusion groove, thereby fixing the cutter head 2. After use, the protective tube 4 will slide outward, and the extrusion groove will separate from the limit blocks 31, making it convenient to quickly disassemble and replace the cutter head 2.

[0045] This invention provides protection for the high-temperature blade 2, which can prevent accidental contact with the blade 2 and improve the safety of medical personnel.

[0046] The preferred technical solution in this embodiment is:

[0047] Reference Figure 6 The telescopic component 5 includes an energized spiral tube 51, a bottom magnetic ring 52, and an upper magnetic ring 53. The upper magnetic ring 53 is fixedly connected to the bottom end of the protective tube 4, the bottom magnetic ring 52 is fixedly connected to the bottom of the sliding ring groove, and the energized spiral tube 51 is fixedly connected between the bottom magnetic ring 52 and the upper magnetic ring 53.

[0048] When not in use, the cutter head 2 needs to be covered for protection, and when in use, the cutter head 2 needs to be exposed. Both of these require manual operation, which is quite troublesome.

[0049] By setting a telescopic component 5 below the protective tube 4, when the electric knife starts working, the energized spiral tube 51 is energized, generating magnetic force. At the same time, the energized spiral tube 51 contracts, driving the bottom magnetic ring 52 and the upper magnetic ring 53 to move relative to each other. The two magnetic rings approach and attract each other, thereby driving the protective tube 4 to extend and retract, ensuring that the limit block 31 is stably locked in the extrusion groove, and improving the stability and safety of the overall structure.

[0050] After use, the energized spiral tube 51 is de-energized. Because the outer side of the energized spiral tube 51 is provided with an elastic outer skin, it has a certain elasticity. After the power is de-energized, the energized spiral tube returns to its original position, thereby causing the bottom magnetic ring 52 and the upper magnetic ring 53 to move away from each other. This pushes the protective tube 4 back to the outside of the sliding ring groove, covering the high-temperature cutting head 2 and preventing accidental contact with the high-temperature cutting head 2, thus improving the safety of the electric knife.

[0051] Reference Figure 7 The operating part 1 is provided with a counterweight cavity, which is located below the mounting groove, and a counterweight assembly 6 is provided inside the counterweight cavity;

[0052] The counterweight assembly 6 includes a connecting rod 61 and a counterweight tube 62. The connecting rod 61 is vertically fixed inside the counterweight cavity, and its end passes through the counterweight cavity and is set inside the mounting groove. The connecting rod 61 is used to energize the cutter head 2. The counterweight tube 62 is slidably set on the connecting rod 61 and is used to adjust the center of gravity of the operating part 1.

[0053] Due to the split design of the electrosurgical unit, the blade head 2 occupies a small proportion, while the operating part 1 is relatively heavy. This results in the blade head 2 being relatively light during use. Even a slight sway of the operating part 1 during operation will cause the blade head 2 to move significantly, making it inconvenient to perform fine control on the blade head 2.

[0054] In actual operation, the cutter head 2 is set downwards. At this time, the configuration tube that is slidably set on the connecting rod 61 will slide towards the cutter head 2, thereby shifting the center of gravity of the operating part 1 towards the cutter head 2, thus improving the user's comfort and allowing for more precise control of the cutter head 2.

[0055] Then, when installing or removing the cutter head 2, the mounting groove is positioned upwards, and the configuration tube slides away from the mounting groove, thereby moving the overall center of gravity of the operating part 1 towards the center, which facilitates the handheld fixation of the operating part 1.

[0056] Reference Figure 7-8 The upper end of the connecting rod 61 is provided with an upper buffer 7, which is used to buffer the counterweight tube 62 when it moves toward the cutter head 2.

[0057] The upper buffer component 7 includes a buffer spring 71, a compression ring 72, and a limiting ring 73. The buffer spring 71 is fixedly connected between the compression ring 72 and the limiting ring 73. The compression ring 72 is close to the counterweight tube 62, and the limiting ring 73 is fixedly connected to the top wall of the counterweight cavity.

[0058] Due to the configuration tube, the tube will impact inside the configuration cavity during sliding, which will make noise during actual operation. The sudden change in the center of gravity will also cause discomfort to the user and may cause the tube to slip out of their hand.

[0059] As the configuration tube slides towards the cutter head 2, it comes into contact with the elastic compression ring 72. By compressing the buffer spring 71, the impact force generated by the movement can be directly converted into elastic storage, which not only reduces noise but also slows down the movement speed and reduces discomfort.

[0060] Reference Figure 8The upper side of the counterweight cavity is provided with a plurality of sliding openings that communicate with the sliding ring groove. The extrusion ring 72 is provided with an extrusion assembly 8, which is used to extrude the limiting block 31. The extrusion assembly 8 includes a plurality of connecting rods 81 and an extrusion plate 82. The extrusion plate 82 is sleeved on the inner ring of the sliding ring groove and is located inside the extrusion groove of the protective tube 4. The plurality of connecting rods 81 are fixedly connected between the extrusion plate 82 and the extrusion ring 72 and are slidably disposed inside the sliding opening.

[0061] When the cutter head 2 is installed but the telescopic component 5 is not yet powered, the cutter head 2 is facing downwards. Due to gravity, the cutter head 2 may separate from the mounting slot due to inertia during the movement.

[0062] When the cutter head 2 is facing downwards, the counterweight will contact the compression ring 72, thereby pushing the compression assembly 8 fixedly connected to the compression ring 72 to move. The connecting rod 81 slides inside the slide, thereby moving the compression plate 82 towards the position of the limiting block 31. The limiting block 31 is compressed and strengthened by the inclined compression plate 82, thereby strengthening the compression and limiting between the limiting block 31 and the annular groove of the cutter head 2, and preventing the cutter head 2 from falling due to inertia when not powered on.

[0063] Reference Figure 7 A buffer airbag ring 9 is sleeved below the connecting rod 61. The buffer airbag ring 9 is a foldable airbag, and multiple air holes are opened on the top side.

[0064] The protective tube 4 has multiple air channels 10 arranged in a ring on its side. The bottom end of the air channel 10 is located inside the extrusion groove, and the top end of the air channel 10 is located on the upper inner wall of the protective tube 4.

[0065] The upper buffer assembly is used to solve the noise and impact generated when the counterweight tube 62 moves to the position of the cutter head 2, while the buffer airbag ring 9 is set at the other end of the configuration cavity to solve the noise and impact generated during the movement of the configuration tube to the other end.

[0066] At the same time, when the counterweight tube slides away from the cutter head 2, it will collide and squeeze with the buffer airbag ring 9. During the impact, the buffer airbag ring 9 will gradually squeeze out the internal gas, thereby gradually buffering the impact force generated during the movement of the counterweight tube 62 and playing a role in noise reduction and buffering during the movement of the counterweight tube 62 to the other side.

[0067] Meanwhile, when the work is completed and the cutter head 2 is facing upwards, in preparation for disassembling the cutter head 2, the cutter head 2 is in a high-temperature state due to the power supply. It needs to be cooled down before it can be disassembled. At this time, the counterweight tube 62 will continuously discharge gas by squeezing the buffer airbag ring 9. The gas ejected moves into the squeezing groove of the protective tube 4 through the sliding port, and is sprayed onto the high-temperature cutter head 2 through the air guide channel 10, so as to initially cool down the cutter head 2 and shorten the time for disassembling the cutter head 2.

[0068] Reference Figure 1-2 The operating part 1 is provided with a threaded groove at the end away from the cutter head 2, and a connecting wire 11 is provided inside the threaded groove. The connecting wire 11 is used to connect the operating part 1 and the control console.

[0069] By making the connecting wire 11, the operating part 1, and the cutting head 2 detachable, the electric knife can be easily disassembled, making it convenient for storage and transfer.

[0070] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A medical split-type high-frequency electrotome comprising: The operation part (1) and the cutter head (2) arranged at one end of the operation part (1) are characterized in that one end of the operation part (1) is provided with a mounting groove, the cutter head (2) is clamped in the mounting groove, and the operation part (1) is provided with a sliding ring groove. A plurality of mounting ports are annularly arranged between the mounting groove and the sliding ring groove, a plurality of limit components (3) are arranged in the mounting ports, respectively, the limit component (3) comprises a limit block (31) and two elastic sheets (32), the two elastic sheets (32) are fixedly connected to the upper and lower sides of the limit block (31), and are fixedly connected to one side of the mounting port close to the sliding ring groove, the limit block (31) is clamped in the mounting port, and the fixed end of the cutter head (2) is provided with a ring groove, and a plurality of limit blocks (31) are used for clamping in the ring groove. The sliding ring groove is provided with a protection pipe (4), the bottom of the protection pipe (4) is provided with an expansion component (5), the inner side of the protection pipe (4) is provided with an extrusion groove, the extrusion groove is a reverse circular truncated cone, and the limit block (31) is extruded in the downward movement process.

2. The medical split type high-frequency electric knife according to claim 1, wherein The expansion component (5) comprises a power spiral pipe (51), a bottom magnetic ring (52) and an upper magnetic ring (53), the upper magnetic ring (53) is fixedly connected to the bottom end of the protection pipe (4), the bottom magnetic ring (52) is fixedly connected to the bottom of the sliding ring groove, and the power spiral pipe (51) is fixedly connected between the bottom magnetic ring (52) and the upper magnetic ring (53).

3. The medical split type high-frequency electric knife according to claim 1, wherein The operation part (1) is provided with a counterweight cavity, the counterweight cavity is arranged below the mounting groove, and the counterweight cavity is provided with a counterweight component (6).

4. The medical split type high-frequency electric knife according to claim 3, wherein The counterweight component (6) comprises a communication rod (61) and a counterweight pipe (62), the communication rod (61) is fixedly connected vertically in the counterweight cavity, penetrates through the counterweight cavity at the end portion, and is arranged in the mounting groove, the communication rod (61) is used for power supply of the cutter head (2), and the counterweight pipe (62) is slidably arranged on the communication rod (61) and used for adjusting the gravity center of the operation part (1).

5. The medical split-type high-frequency electric knife according to claim 4, wherein The upper end of the communication rod (61) is provided with an upper buffer component (7), and the upper buffer component (7) is used for buffering the counterweight pipe (62) when moving towards the cutter head (2).

6. The medical split-type high-frequency electric knife according to claim 5, wherein The upper buffer component (7) comprises a buffer spring (71), an extrusion ring (72) and a limit ring (73), the buffer spring (71) is fixedly connected between the extrusion ring (72) and the limit ring (73), the extrusion ring (72) is close to the counterweight pipe (62), and the limit ring (73) is fixedly connected with the top wall of the counterweight cavity.

7. The medical split-type high-frequency electric knife according to claim 6, wherein A plurality of sliding ports in communication with the sliding ring groove are annularly arranged on the upper end side of the counterweight cavity, the extrusion ring (72) is provided with an extrusion component (8), the extrusion component (8) is used for extruding the limit block (31), the extrusion component (8) comprises a plurality of connecting rods (81) and extrusion sheets (82), the extrusion sheets (82) are sleeved on the inner ring of the sliding ring groove and located on the inner side of the extrusion groove of the protection pipe (4), the plurality of connecting rods (81) are fixedly connected between the extrusion sheets (82) and the extrusion ring (72) and slidably arranged in the sliding ports.

8. The medical split type high-frequency electric knife according to claim 4, wherein The communication rod (61) is sleeved with a buffer air bag ring (9) below, the buffer air bag ring (9) is a folding air bag, and a plurality of air holes are formed in the top side.

9. The medical split type high frequency electrotome according to claim 1, wherein A plurality of air guide channels (10) are annularly formed in the side of the protective tube (4), the bottom end of the air guide channel (10) is arranged inside the extrusion groove, and the top end of the air guide channel (10) is arranged on the inner wall of the upper end of the protective tube (4).

10. The medical split type high-frequency electric knife according to claim 1, wherein The operating part (1) is provided with a threaded groove at one end away from the cutter head (2), and a connecting plug wire (11) is arranged in the threaded groove, which is used for connecting the operating part (1) and the control console.

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