Surgical knife head and medical surgical device

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, disclose a scalpel head and medical operation device. Scalpel head includes drive handle, protective sleeve and electrode head. Drive handle includes the button of dolly, one end of protective sleeve is connected with drive handle, and the push-pull rod is arranged in protective sleeve; The electrode head includes front electrode subassembly and rear electrode subassembly, and rear electrode subassembly sets up at the other end of protective sleeve, and front electrode subassembly is connected with push-pull rod, wherein, operating the button of dolly, and the button of dolly drives push-pull rod to move along protective sleeve before and after through linkage structure, and push-pull rod drives front electrode subassembly to rotate around rear electrode subassembly simultaneously, to adjust the included angle between front electrode subassembly and rear electrode subassembly. Medical operation device includes scalpel head. The utility model adjusts the included angle between front electrode subassembly and rear electrode subassembly, so that front electrode subassembly can be in different working angle, and then changes the working position and attitude of front electrode subassembly, expands the application range.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a surgical blade and a medical surgical device. Background Technology

[0002] Radio frequency (RF) electrosurgical units are medical devices that convert radio frequency energy into heat energy for cutting and hemostasis. Plasma high-frequency generators are also medical devices that use high-frequency current to generate a plasma field to remove a controlled volume of tissue; this technology is also known as cryoablation.

[0003] The related technology integrates plasma surgery systems and radiofrequency ablation devices. The plasma surgery system is used initially, utilizing its high-power ablation function to quickly clear soft tissue and establish a working channel. The radiofrequency ablation device is then used, employing its low-temperature coagulation function to precisely target the coagulation point without damaging nerves. However, during the procedure, the angle and position of the surgical blade are usually not adjustable, affecting the surgical outcome.

[0004] Therefore, there is an urgent need for a surgical blade and medical surgical device to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a surgical blade and a medical surgical device, which aims to solve the problem that the angle and position of the surgical blade cannot be adjusted in the prior art, thus affecting the surgical effect. This surgical blade and medical surgical device adjusts the angle between the front electrode assembly and the rear electrode assembly, so that the front electrode assembly can be in different working angles, thereby changing the working position and posture of the front electrode assembly and expanding the application range.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Surgical blade, including:

[0008] Drive handle, including toggle buttons;

[0009] A protective sleeve, one end of which is connected to the drive handle, and a push-pull rod is installed inside the protective sleeve;

[0010] The electrode head includes a front electrode assembly and a rear electrode assembly, the rear electrode assembly being disposed at the other end of the protective sleeve, and the front electrode assembly being connected to the push-pull rod; wherein...

[0011] Operating the toggle button causes the push-pull rod to move back and forth along the protective sleeve via a linkage structure. Simultaneously, the push-pull rod causes the front electrode assembly to rotate around the rear electrode assembly, thereby adjusting the angle between the front and rear electrode assemblies. This allows the front electrode assembly to be at different working angles, thus changing the working position and posture of the front electrode assembly.

[0012] In some possible implementations, the drive handle includes a housing, the toggle button includes a keycap and a key lever connected vertically, the keycap is slidably connected in a groove in the housing, the linkage structure is driven by the key lever to push the keycap to slide along the groove, and the key lever drives the push-pull rod to move back and forth along the protective sleeve through the linkage structure.

[0013] In some possible implementations, the linkage structure includes a pressure rod and a connecting rod that are rotatably connected. The end of the pressure rod away from the connecting rod is rotatably connected to the housing, and the end of the connecting rod away from the pressure rod is rotatably connected to the push-pull rod. The pressure rod has an elongated guide hole, and the end of the key rod away from the key cap is provided with a guide post that slides through the elongated guide hole.

[0014] In some possible implementations, the connecting rod is connected to the push-pull rod via a connecting structure, the connecting structure including a connector and a connecting block, the connector being slidably disposed in the housing, the connecting block being disposed in the central groove of the connector, the push-pull rod being fixed to the connecting block by a threaded connection, and the connecting rod being rotatably connected to the connector.

[0015] In some possible implementations, the drive handle includes a housing, the scalpel head includes a fixed rod mounted on the housing, the rear electrode assembly is mounted on the fixed rod, the front electrode assembly is rotatably connected to the fixed rod, and the push-pull rod is connected to the front electrode assembly via a connecting pin. The push-pull rod can drive the front electrode assembly to rotate relative to the fixed rod to adjust the angle between the front electrode assembly and the rear electrode assembly, so that the front electrode assembly can be in different working angles, thereby changing the working position and posture of the front electrode assembly.

[0016] In some possible implementations, the front electrode assembly includes a first electrode head, a second electrode head, and an insulating portion for insulatingly connecting the first electrode head and the second electrode head; the fixing rod includes a metal portion and a ceramic portion connected to each other; the insulating portion and the ceramic portion are rotatably connected via an electrode shaft; the rear electrode assembly includes a third electrode head mounted on the metal portion; and the push-pull rod is connected to the insulating portion via the connecting pin.

[0017] In some possible implementations, the drive handle includes a housing and a switch slidably disposed in the housing. The drive handle also includes a toggle switch disposed inside the housing and connected to the switch. When the switch slides along the housing, it can simultaneously drive the toggle switch to switch between the plasma position and the radio frequency position.

[0018] In some possible implementations, the drive handle further includes a locking structure mounted on the housing. The locking structure includes a locking switch, a first elastic element, and a locking rod assembly. The locking switch includes a locking button and a locking rod connected to the locking button and slidably passing through the housing. The first elastic element is sleeved on the locking rod, and the locking rod has a locking hole. The locking rod assembly is connected to the toggle switch.

[0019] In some possible implementations, the locking lever includes a first cylindrical segment and a second cylindrical segment connected to each other, the first cylindrical segment being connected to the locking button and having a diameter larger than that of the second cylindrical segment, the first cylindrical segment having the locking hole, and the first elastic element being sleeved on the second cylindrical segment.

[0020] In some possible implementations, the locking rod assembly includes a push rod and a second elastic member, one end of the push rod being slidably connected to the switch, the second elastic member being sleeved on the push rod, one end of the second elastic member abutting against the switch, and the other end of the second elastic member abutting against the stepped surface of the push rod;

[0021] When the toggle switch is in the radio frequency position, the other end of the push rod abuts against the first cylindrical section, and the second elastic element is compressed.

[0022] A medical surgical device includes a main unit and a surgical blade as described in any of the above embodiments, wherein the drive handle and the main unit are connected by a connecting cable.

[0023] The beneficial effects of this utility model are:

[0024] The surgical blade head provided by this utility model features an operating toggle button. This button, through a linkage structure, drives a push-pull rod to move back and forth along the protective sleeve. Simultaneously, the push-pull rod causes the front electrode assembly to rotate around the rear electrode assembly, adjusting the angle between the two assemblies. By adjusting this angle, the front electrode assembly can be positioned at different working angles, thereby changing its working position and posture, expanding its application range. Furthermore, the operation is simple, with the push-pull rod driving the rotation of the front electrode assembly, ensuring stable and reliable use, and improving surgical efficiency and safety. Attached Figure Description

[0025] Figure 1This is a three-dimensional view of the medical surgical device provided in this embodiment of the utility model;

[0026] Figure 2 This is a cross-sectional view of the medical surgical device provided in this embodiment of the present invention;

[0027] Figure 3 This is a cross-sectional view of the toggle button, linkage structure, and connection structure provided in this embodiment of the utility model;

[0028] Figure 4 This is a cross-sectional view of the connection between the electrode head and the push-pull rod provided in this embodiment of the utility model;

[0029] Figure 5 This is an exploded view of the cover plate, switch, toggle switch, and locking structure provided in this embodiment of the utility model;

[0030] Figure 6 This is a schematic diagram showing the state of the push rod abutting against the first cylindrical section (at the radio frequency position) provided in this embodiment of the utility model;

[0031] Figure 7 This is a schematic diagram showing the state of the push rod being inserted into the locking hole (in the plasma position) according to an embodiment of the present invention;

[0032] Figure 8 This is a schematic diagram showing the state of the front electrode assembly and the rear electrode assembly when they are collinear, according to an embodiment of this utility model.

[0033] Figure 9 This is a schematic diagram showing the state of the front electrode assembly and the rear electrode assembly when they are at a certain angle, as provided in the embodiment of this utility model.

[0034] In the picture:

[0035] 10. Surgical blade; 20. Connecting cable;

[0036] 1. Drive handle; 11. Housing; 111. Slide groove; 12. Toggle button; 121. Keycap; 122. Key lever; 1221. Guide post; 13. Switch; 14. Toggle switch; 15. Locking structure; 151. Locking switch; 1511. Locking button; 1512. Locking lever; 1501. First cylindrical section; 1502. Second cylindrical section; 1503. Locking hole; 152. First elastic element; 153. Locking lever assembly; 1531. Push rod; 1532. Second elastic element; 1533. Stepped surface; 16. Cover plate; 17. Circuit board;

[0037] 2. Protective sleeve;

[0038] 3. Push-pull rod;

[0039] 4. Electrode head; 41. Front electrode assembly; 411. First electrode head; 412. Second electrode head; 413. Insulating part; 4131. First insulating part; 4132. Second insulating part; 42. Rear electrode assembly; 421. Third electrode head; 422. Rear electrode base;

[0040] 5. Linkage structure; 51. Pressure rod; 511. Long strip guide hole; 52. Connecting rod;

[0041] 6. Connection structure; 61. Connector; 62. Connecting block;

[0042] 7. Fixing rod;

[0043] 8. Connecting pin; 9. Electrode shaft. Detailed Implementation

[0044] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0045] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or 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 utility model according to the specific circumstances.

[0046] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature 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," and "under" the second feature includes the first feature 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.

[0047] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0048] like Figures 1 to 9As shown, this utility model provides a surgical blade head 10, including a drive handle 1, a protective sleeve 2, and an electrode head 4. The drive handle 1 includes a toggle button 12. One end of the protective sleeve 2 is connected to the drive handle 1, and a push-pull rod 3 is disposed inside the protective sleeve 2. The electrode head 4 includes a front electrode assembly 41 and a rear electrode assembly 42. The rear electrode assembly 42 is disposed at the other end of the protective sleeve 2, and the front electrode assembly 41 is connected to the push-pull rod 3. When the toggle button 12 is operated, the toggle button 12 drives the push-pull rod 3 to move back and forth along the protective sleeve 2 through a linkage structure 5. The push-pull rod 3 simultaneously drives the front electrode assembly 41 to rotate around the rear electrode assembly 42, thereby adjusting the angle between the front electrode assembly 41 and the rear electrode assembly 42, so that the front electrode assembly 41 can be in different working angles, thereby changing the working position and posture of the front electrode assembly 41. In this embodiment, the forward movement refers to movement away from the electrode head 4, and the backward movement refers to movement towards the electrode head 4.

[0049] The surgical blade 10 provided in this embodiment operates by pressing a toggle button 12. Pressing the toggle button 12 drives the push-pull rod 3 to move back and forth along the protective sleeve 2 via the linkage structure 5. The push-pull rod 3 simultaneously drives the front electrode assembly 41 to rotate around the rear electrode assembly 42, adjusting the angle between the front electrode assembly 41 and the rear electrode assembly 42. By adjusting the angle between the front electrode assembly 41 and the rear electrode assembly 42, the front electrode assembly 41 can be in different working angles, thereby changing the working position and posture of the front electrode assembly 41, expanding the application range, and making the operation simple. The push-pull rod 3 drives the front electrode assembly 41 to rotate, ensuring stable and reliable use, and improving surgical efficiency and safety.

[0050] Optionally, the drive handle 1 includes a housing 11, and the toggle button 12 includes a keycap 121 and a key lever 122 connected vertically. The keycap 121 is slidably connected within a groove 111 in the housing 11. The linkage structure 5 is connected to the key lever 122, pushing the keycap 121 to slide along the groove 111. The key lever 122 drives the push-pull rod 3 to move back and forth along the protective sleeve 2 via the linkage structure 5. When the keycap 121 slides along the groove 111, it drives the key lever 122 to push and pull the push-pull rod 3 via the linkage structure 5, making operation simple and the structure stable and reliable.

[0051] Furthermore, the linkage structure 5 includes a pressure rod 51 and a connecting rod 52 rotatably connected. The end of the pressure rod 51 away from the connecting rod 52 is rotatably connected to the housing 11, and the end of the connecting rod 52 away from the pressure rod 51 is rotatably connected to the push-pull rod 3. The pressure rod 51 has an elongated guide hole 511, and the end of the key rod 122 away from the key cap 121 is provided with a guide post 1221 that slides through the elongated guide hole 511. When the key cap 121 slides back and forth along the slide groove 111, the guide post 1221 of the key rod 122 slides back and forth along the elongated guide hole 511. The guide post 1221 simultaneously pushes or pulls the pressure rod 51, causing it to rotate relative to the housing 11. During the rotation of the pressure rod 51, it drives the connecting rod 52 to move, and the connecting rod 52 drives the push-pull rod 3 to move back and forth. The structure is simple, and the transmission is stable and reliable.

[0052] Preferably, the connecting rod 52 is connected to the push-pull rod 3 via a connecting structure 6. The connecting structure 6 includes a connector 61 and a connecting block 62. The connector 61 is slidably disposed on the housing 11, and the connecting block 62 is disposed in the central groove of the connector 61. The push-pull rod 3 and the connecting block 62 are fixed together by a threaded connection, and the connecting rod 52 is rotatably connected to the connector 61. The connection structure 6 improves the stability of the push-pull rod 3 sliding back and forth along the protective sleeve 2; the threaded connection between the push-pull rod 3 and the connecting block 62 facilitates assembly and disassembly.

[0053] In this embodiment, the scalpel head 10 also includes a fixing rod 7 mounted on the housing 11. The rear electrode assembly 42 is mounted on the fixing rod 7, and the front electrode assembly 41 is rotatably connected to the fixing rod 7. The push-pull rod 3 is connected to the front electrode assembly 41 through a connecting pin 8. The push-pull rod 3 can drive the front electrode assembly 41 to rotate relative to the fixing rod 7 to adjust the angle between the front electrode assembly 41 and the rear electrode assembly 42, so that the front electrode assembly 41 can be in different working angles, thereby changing the working position and posture of the front electrode assembly 41. The structure is simple and the assembly is easy. The linear motion of the push-pull rod 3 can be directly converted into the rotational motion of the front electrode assembly 41 through the connecting pin 8. The power transmission path is short, reducing energy loss in the transmission of multiple parts and enabling rapid response to operation.

[0054] Optionally, the front electrode assembly 41 includes a first electrode head 411, a second electrode head 412, and an insulating part 413 for insulatingly connecting the first electrode head 411 and the second electrode head 412. The fixing rod 7 includes a metal part and a ceramic part connected to each other. The insulating part 413 and the ceramic part are rotatably connected via an electrode shaft 9. The rear electrode assembly 42 includes a third electrode head 421 mounted on the metal part. The push-pull rod 3 is connected to the insulating part 413 via a connecting pin 8. During operation, when the first electrode head 411 and the second electrode head 412 of the front electrode assembly 41 are working, and the third electrode head 421 of the rear electrode assembly 42 is in a de-energized state, the surgical blade head 10 is in radio frequency operating mode. When only one electrode of the first electrode head 411 and the second electrode head 412 of the front electrode assembly 41 is working while the other electrode is not working, and the third electrode head 421 of the rear electrode assembly 42 is working, the surgical blade head 10 is in plasma operating mode. The surgical head 10 integrates the radio frequency working mode and the plasma working mode. When the surgical head 10 is in either the radio frequency or plasma working mode, the front electrode assembly 41 can be rotated around the rear electrode assembly 42 by pressing the button 12 to precisely control the position and orientation of the front electrode assembly 41 for convenient operation.

[0055] To avoid damaging the structure of the third electrode head 421, the third electrode head 421 is mounted on the metal part of the fixing rod 7 via the rear electrode seat 422.

[0056] In this embodiment, the insulating part 413 includes a first insulating part 4131 and a second insulating part 4132. The first insulating part 4131 is disposed between the first electrode head 411 and the second electrode head 412, and the second insulating part 4132 is disposed between the second electrode head 412 and the rear electrode seat 422. The second insulating part 4132 is rotatably connected to the ceramic part via the electrode shaft 9. The materials used to prepare the first insulating part 4131 and the second insulating part 4132 are not limited; any material with insulating properties and meeting medical safety standards in the prior art is acceptable. The specific shapes of the first insulating part 4131 and the second insulating part 4132 are also not limited, as long as the volume is reduced while achieving insulation between two adjacent electrode heads 4, and the outer surface has no sharp structures that could easily scratch human blood vessels or organs.

[0057] Optionally, the drive handle 1 includes a housing 11 and a switch 13 slidably disposed on the housing 11. The drive handle 1 also includes a toggle switch 14, which is disposed inside the housing 11 and connected to the switch 13. When the switch 13 slides along the housing 11, it can simultaneously drive the toggle switch 14 to switch between the plasma position and the radio frequency position, making operation simple. In this embodiment, the plasma position and the radio frequency position are disposed on a circuit board 17 inside the housing 11.

[0058] In this embodiment, the housing 11 is provided with a mounting opening for mounting the toggle switch 14, and a cover plate 16 is detachably mounted at the mounting opening. The toggle switch 13 is slidably mounted on the cover plate 16. This arrangement improves the ease of mounting and dismounting the toggle switch 14.

[0059] Preferably, the drive handle 1 further includes a locking structure 15 mounted on the housing 11. The locking structure 15 includes a locking switch 151, a first elastic element 152, and a locking rod assembly 153. The locking switch 151 includes a locking button 1511 and a locking rod 1512 connected to the locking button 1511 and slidably passing through the housing 11. The first elastic element 152 is sleeved on the locking rod 1512. The locking rod 1512 has a locking hole 1503. The locking rod assembly 153 is connected to the switch 13. When the locking lever assembly 153 abuts against the locking lever 1512, the toggle switch 14 is in and locked in the radio frequency (RF) position. Pressing the locking button 1511 compresses the first elastic element 152, pushing the switch 13. The switch 13 causes the locking lever assembly 153 to insert into the locking hole 1503, and the toggle switch 14 is in the plasma position. Releasing the locking button 1511 and pushing the switch 13 causes the locking lever assembly 153 to disengage from the locking hole 1503. Under the elastic force of the first elastic element 152, the locking switch 151 resets. By setting the locking structure 15, when the toggle switch 14 is in the RF position, the locking lever assembly 153 abuts against the locking lever 1512, and the switch 13 cannot be pushed at this time, that is, the toggle switch 14 is locked in the RF position. Only by pressing and activating the locking switch 151 can the switch 13 be unlocked. This setting can improve the safety of the surgical procedure.

[0060] Optionally, the locking lever 1512 includes a first cylindrical segment 1501 and a second cylindrical segment 1502 connected to each other. The first cylindrical segment 1501 is connected to the locking button 1511, and the diameter of the first cylindrical segment 1501 is larger than the diameter of the second cylindrical segment 1502. The first cylindrical segment 1501 has a locking hole 1503, and a first elastic element 152 is sleeved on the second cylindrical segment 1502. When the locking button 1511 is pressed, the first elastic element 152 is compressed, and the locking lever assembly 153 is inserted into the locking hole 1503. When the switch 13 is pushed, the switch 13 causes the locking lever assembly 153 to disengage from the locking hole 1503. Under the elastic force of the first elastic element 152, the locking lever 1512 and the locking button 1511 are reset.

[0061] In this embodiment, the locking rod assembly 153 includes a push rod 1531 and a second elastic member 1532. One end of the push rod 1531 is slidably connected to the switch 13. The second elastic member 1532 is sleeved on the push rod 1531, with one end of the second elastic member 1532 abutting against the switch 13 and the other end abutting against the stepped surface 1533 of the push rod 1531. When the toggle switch 14 is in the radio frequency position, the other end of the push rod 1531 abuts against the first cylindrical section 1501, and the second elastic member 1532 is compressed. When switching from the radio frequency position to the plasma position, pressing the locking button 1511 aligns the push rod 1531 and the locking hole 1503. Under the action of the second elastic member 1532, the push rod 1531 first inserts into the locking hole 1503. At this time, the switch 13 is unlocked, pushing the switch 13 to drive the toggle switch 14 to switch positions, thereby realizing the state switching of the surgical blade head 10.

[0062] Optionally, both the first elastic element 152 and the second elastic element 1532 are springs. In other embodiments, both the first elastic element 152 and the second elastic element 1532 can be configured as rubber rings or a combination of springs and rubber rings.

[0063] This embodiment also provides a medical surgical device, including a main unit and the aforementioned surgical blade 10, with the drive handle 1 and the main unit connected by a connecting cable 20.

[0064] In this embodiment of the medical surgical device, the angle between the front electrode assembly 41 and the rear electrode assembly 42 can be adjusted, allowing the front electrode assembly 41 to be at different working angles, thereby changing the working position and posture of the front electrode assembly 41, expanding its application range, and making it easy to operate. The front electrode assembly 41 is rotated by the push-pull rod 3, and its use is stable and reliable, improving surgical efficiency and safety.

[0065] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A surgical blade, characterized in that, include: A drive handle (1) includes a toggle button (12); A protective sleeve (2) is connected at one end to the drive handle (1), and a push-pull rod (3) is provided inside the protective sleeve (2); The electrode head (4) includes a front electrode assembly (41) and a rear electrode assembly (42), wherein the rear electrode assembly (42) is disposed at the other end of the protective sleeve (2), and the front electrode assembly (41) is connected to the push-pull rod (3); wherein, When the toggle button (12) is operated, the toggle button (12) drives the push-pull rod (3) to move back and forth along the protective sleeve (2) through the linkage structure (5). At the same time, the push-pull rod (3) drives the front electrode assembly (41) to rotate around the rear electrode assembly (42) to adjust the angle between the front electrode assembly (41) and the rear electrode assembly (42), so that the front electrode assembly (41) can be in different working angles, thereby changing the working position and posture of the front electrode assembly (41).

2. The surgical blade according to claim 1, characterized in that, The drive handle (1) includes a housing (11), and the scalpel head also includes a fixing rod (7) mounted on the housing (11). The rear electrode assembly (42) is mounted on the fixing rod (7). The front electrode assembly (41) is rotatably connected to the fixing rod (7). The push-pull rod (3) is connected to the front electrode assembly (41) through a connecting pin (8). The push-pull rod (3) can drive the front electrode assembly (41) to rotate relative to the fixing rod (7) to adjust the angle between the front electrode assembly (41) and the rear electrode assembly (42), so that the front electrode assembly (41) can be in different working angles, thereby changing the working position and posture of the front electrode assembly (41).

3. The surgical blade according to claim 2, characterized in that, The front electrode assembly (41) includes a first electrode head (411), a second electrode head (412), and an insulating part (413) for insulatingly connecting the first electrode head (411) and the second electrode head (412). The fixing rod (7) includes a metal part and a ceramic part connected to each other. The insulating part (413) and the ceramic part are rotatably connected through an electrode shaft (9). The rear electrode assembly (42) includes a third electrode head (421) mounted on the metal part. The push-pull rod (3) is connected to the insulating part (413) through the connecting pin (8).

4. The surgical blade according to claim 1, characterized in that, The drive handle (1) includes a housing (11), and the toggle button (12) includes a keycap (121) and a key lever (122) connected vertically. The keycap (121) is slidably connected in the groove (111) of the housing (11). The linkage structure (5) is connected to the key lever (122) in a transmission manner, pushing the keycap (121) to slide along the groove (111). The key lever (122) drives the push-pull rod (3) to move back and forth along the protective sleeve (2) through the linkage structure (5).

5. The surgical blade according to claim 4, characterized in that, The linkage structure (5) includes a pressure rod (51) and a connecting rod (52) that are rotatably connected. The end of the pressure rod (51) away from the connecting rod (52) is rotatably connected to the housing (11). The end of the connecting rod (52) away from the pressure rod (51) is rotatably connected to the push-pull rod (3). The pressure rod (51) has an elongated guide hole (511). The end of the key rod (122) away from the key cap (121) is provided with a guide post (1221) that slides through the elongated guide hole (511).

6. The surgical blade according to claim 5, characterized in that, The connecting rod (52) is connected to the push-pull rod (3) through a connecting structure (6). The connecting structure (6) includes a connector (61) and a connecting block (62). The connector (61) is slidably disposed on the housing (11). The connecting block (62) is disposed in the central groove of the connector (61). The push-pull rod (3) and the connecting block (62) are fixed by a threaded connection. The connecting rod (52) is rotatably connected to the connector (61).

7. The surgical blade according to claim 1, characterized in that, The drive handle (1) includes a housing (11) and a switch (13) slidably disposed in the housing (11). The drive handle (1) also includes a toggle switch (14). The toggle switch (14) is disposed inside the housing (11) and connected to the switch (13). When the switch (13) slides along the housing (11), it can simultaneously drive the toggle switch (14) to switch between the plasma position and the radio frequency position.

8. The surgical blade according to claim 7, characterized in that, The drive handle (1) further includes a locking structure (15) installed on the housing (11). The locking structure (15) includes a locking switch (151), a first elastic element (152), and a locking rod assembly (153). The locking switch (151) includes a locking button (1511) and a locking rod (1512) connected to the locking button (1511) and slidably passing through the housing (11). The first elastic element (152) is sleeved on the locking rod (1512). The locking rod (1512) has a locking hole (1503). The locking rod assembly (153) is connected to the switch (13).

9. The surgical blade according to claim 8, characterized in that, The locking lever (1512) includes a first cylindrical segment (1501) and a second cylindrical segment (1502) connected to each other. The first cylindrical segment (1501) is connected to the locking button (1511) and the diameter of the first cylindrical segment (1501) is larger than the diameter of the second cylindrical segment (1502). The first cylindrical segment (1501) has the locking hole (1503), and the first elastic element (152) is sleeved on the second cylindrical segment (1502).

10. The surgical blade according to claim 9, characterized in that, The locking rod assembly (153) includes a push rod (1531) and a second elastic element (1532). One end of the push rod (1531) is slidably connected to the switch (13). The second elastic element (1532) is sleeved on the push rod (1531), and one end of the second elastic element (1532) abuts against the switch (13), while the other end of the second elastic element (1532) abuts against the stepped surface (1533) of the push rod (1531). When the toggle switch (14) is in the radio frequency position, the other end of the push rod (1531) abuts against the first cylindrical segment (1501), and the second elastic element (1532) is compressed.

11. A medical surgical device, characterized in that, Includes a main unit and a scalpel head as described in any one of claims 1-10, wherein the drive handle (1) and the main unit are connected by a connecting cable (20).

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