Scalpel

Abstract

A scalpel. The scalpel mainly comprises a scalpel head assembly, a snake bone assembly, a fifth guide wire, and a sixth guide wire. The scalpel head assembly is arranged at the front end of the snake bone assembly, and the scalpel head assembly is used for cutting tissue. A first end of the fifth guide wire and a first end of the sixth guide wire are connected to the snake bone assembly, and a second end of the fifth guide wire and a second end of the sixth guide wire are connected to a snake bone control knob in an instrument box. A snake bone control assembly is drivingly connected to the snake bone control knob on the instrument box, and the snake bone control assembly can drive the snake bone control knob to rotate, so that the fifth guide wire drives the snake bone assembly to bend in a first direction, or the sixth guide wire drives the snake bone assembly to bend in a second direction, or the fifth guide wire drives the snake bone assembly to bend in the first direction and the sixth guide wire drives the snake bone assembly to bend in the second direction.

Description

scalpel

[0001] This application claims priority to Chinese patent application filed on September 26, 2023, with application number 202311246572.3, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of medical devices, for example, to a scalpel. Background Art

[0003] The scalpels in the related art are usually straight, that is, once the scalpel is produced and processed, its shape is fixed and cannot be bent. In this way, when medical staff use the scalpel, the scalpel will reduce the convenience and maneuverability of the medical staff in operating the scalpel, thereby reducing work efficiency and increasing the difficulty and risk of surgery.

[0004] Summary of the Invention

[0005] The present application proposes a scalpel that can improve the work efficiency of medical staff, increase the convenience, maneuverability and safety of operating the scalpel, and save costs.

[0006] An embodiment of the present application provides a scalpel, comprising:

[0007] Cutting head assembly;

[0008] Snake bone assembly, the cutter head assembly is plugged into and matched with the snake bone assembly;

[0009] a fifth guide wire and a sixth guide wire, wherein the first end of the fifth guide wire and the first end of the sixth guide wire are connected to the snake assembly, and the second end of the fifth guide wire and the second end of the sixth guide wire are connected to the snake control knob in the instrument box; and

[0010] A snake bone control component is connected to the snake bone control knob on the instrument box, and the snake bone control component can drive the snake bone control knob to rotate so that the fifth guide wire drives the snake bone component to bend in the first direction, or so that the sixth guide wire drives the snake bone component to bend in the second direction, or so that the fifth guide wire drives the snake bone component to bend in the first direction and the sixth guide wire drives the snake bone component to bend in the second direction, and the first direction and the second direction are opposite. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG1 is a schematic structural diagram of a scalpel provided in one embodiment of the present application;

[0012] FIG2 is a schematic structural diagram of a cutter head assembly provided in one embodiment of the present application;

[0013] FIG3 is a cross-sectional view of a cutter head assembly provided in one embodiment of the present application;

[0014] FIG4 is a schematic structural diagram of an instrument box provided in one embodiment of the present application;

[0015] FIG5 is a schematic structural diagram of a cutter head assembly and a snake bone assembly provided in one embodiment of the present application;

[0016] FIG6 is a cross-sectional view of a cutter head assembly and a snake bone assembly provided in one embodiment of the present application;

[0017] FIG7 is a partial enlarged view of point A in FIG6;

[0018] FIG8 is a schematic structural diagram of a handle and an instrument box provided in one embodiment of the present application;

[0019] FIG9 is a schematic structural diagram of a jaw control assembly provided in one embodiment of the present application;

[0020] FIG10 is a cross-sectional view of a snake bone control assembly provided in one embodiment of the present application;

[0021] FIG11 is an exploded view of a snake bone control assembly provided in one embodiment of the present application;

[0022] FIG12 is a schematic structural diagram of a rotation control assembly provided in one embodiment of the present application;

[0023] FIG13 is a schematic diagram of the fifth guide wire and the sixth guide wire connected to the snake bone assembly provided in one embodiment of the present application.

[0024] 10. First guide wire; 20. Second guide wire; 30. Third guide wire; 40. Fourth guide wire; 50. Fifth guide wire; 60. Sixth guide wire; 100. Cutting head assembly; 110. Sleeve; 120. Transducer; 130. Clamp; 140. Washer; 150. Non-metallic spacer; 160. Fixing pin; 170. Fixing ear; 180. Rotating shaft; 190. Clip; 1901. Teflon gasket; 200. Snake assembly; 300. Straight tube assembly; 400. Instrument box; 410. Jaw control knob; 420. Snake control knob; 430. Rotating control knob; 500. Jaw control assembly; 510. Transmission shaft; 520. Fixed shaft; 530. Fixed block; 540. Spring; 550. Connecting rope; 560. First bevel gear; 570. Hook; 580 , clockwork; 590, jaw joint; 600, snake bone control assembly; 610, first dial; 620, connecting pin; 630, spline; 640, snake bone joint; 650, first bearing; 660, second bearing; 670, spacer ring; 680, retaining ring; 700, rotation control assembly; 710, second dial; 720, second bevel gear; 730, connecting rod; 740, third bevel gear; 750, rotation docking plug; 800, first slider; 900, first fixing member; 1000, handle. DETAILED DESCRIPTION

[0025] In the description of this application, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0026] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0027] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., regarding orientations or positions, are based on the orientations or positions shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0028] As shown in Figures 1 to 4 and Figure 13, this embodiment provides a scalpel, which mainly includes a blade assembly 100, a snake assembly 200, a fifth guide wire 50, and a sixth guide wire 60. Among them, the blade assembly 100 is arranged at the front end of the snake assembly 200, and the blade assembly 100 is configured to perform ultrasonic cutting on tissue. The first end of the fifth guide wire 50 and the first end of the sixth guide wire 60 are connected to the snake assembly 200, and the second end of the fifth guide wire 50 and the second end of the sixth guide wire 60 are connected to the snake control knob 420 in the instrument box 400. The snake bone control assembly 600 is driven and connected to the snake bone control knob 420 on the instrument box 400. The snake bone control assembly 600 can drive the snake bone control knob 420 to rotate, so that the fifth guide wire 50 drives the snake bone assembly 200 to bend in the first direction, or so that the sixth guide wire 60 drives the snake bone assembly 200 to bend in the second direction, or so that the fifth guide wire 50 drives the snake bone assembly 200 to bend in the first direction and the sixth guide wire 60 drives the snake bone assembly 200 to bend in the second direction. The first direction and the second direction are opposite, for example, the first direction is the left direction and the second direction is the right direction. Exemplarily, as shown in Figure 1, the first direction is the M direction in Figure 1, and the second direction is the N direction in Figure 1.

[0029] The snake bone control component 600 in this embodiment can control the bending of the snake bone component 200 through the fifth guide wire 50 and the sixth guide wire 60, thereby realizing the bendable function of the scalpel, which is beneficial to improving the maneuverability and convenience of the scalpel and improving work efficiency.

[0030] The fifth guide wire 50 and the sixth guide wire 60 in this embodiment are made of stainless steel wire, which improves the strength and service life of the scalpel. The snake bone component 200 is made of stainless steel material, which improves the reliability and strength of the scalpel.

[0031] The snake bone assembly 200 in this embodiment is a conventional component in the related art. Therefore, this embodiment will not describe the specific structure of the scalpel in detail.

[0032] As shown in Figures 10-11, in this embodiment, the snake bone control assembly 600 includes a first dial 610, a connecting pin 620 and a spline 630. A mounting hole is provided on the first dial 610, and the spline 630 is provided on the connecting pin 620. The connecting pin 620 and the spline 630 are installed in the mounting hole so that the first dial 610 can drive the connecting pin 620 to rotate.

[0033] In one embodiment, a groove is formed on the connecting pin 620, in which a portion of the spline 630 is received, while another portion of the spline 630 protrudes from the upper end surface of the groove. A serpentine joint 640 is provided at the end of the connecting pin 620 away from the first dial 610, and the serpentine joint 640 is pluggable with the serpentine control knob 420.

[0034] During use, medical personnel can turn the first dial 610, causing the first dial 610 to rotate the connecting pin 620 via the spline 630, thereby causing the connecting pin 620 to rotate the snake-bone plug connector 640, and the snake-bone plug connector 640 to rotate the snake-bone control knob 420. The snake-bone control knob 420 is driven and connected to the fifth guide wire 50 and the sixth guide wire 60 through the interior of the instrument box 400, thereby realizing adjustable driving of the snake-bone assembly 200.

[0035] As shown in Figures 10-11, in this embodiment, the snake control assembly 600 is housed in a housing cavity within the handle 1000. A first bearing 650 and a second bearing 660 are provided on the connecting pin 620. The outer circumferences of the first bearing 650 and the second bearing 660 respectively abut against the inner wall of the housing cavity. The provision of the first bearing 650 and the second bearing 660 facilitates smooth rotation of the connecting pin 620, improving work efficiency.

[0036] In this embodiment, the connecting pin 620 is provided with a spacer ring 670, which is configured to limit the position of the first bearing 650. The snake bone control assembly 600 also includes a retaining ring 680, which is connected to the handle 1000 and is configured to limit the position of the second bearing 660, thereby preventing misalignment between the first bearing 650 and the second bearing 660, thereby improving the stability and reliability of the scalpel.

[0037] As shown in FIG11 , the first dial 610 in this embodiment is provided with a plurality of first serrations, which are arranged at equal intervals, thereby increasing the friction between the medical staff's fingers and the first dial 610 and improving work efficiency.

[0038] The scalpel in this embodiment can be used in conjunction with a robot or a handle 1000. That is, the scalpel can be adapted to robot remote control and can also be adapted to a dedicated handle 1000 for manual operation, thereby improving the flexibility and applicability of the scalpel and increasing the diversity of usage scenarios.

[0039] As shown in Figures 1 to 4 and 8, the scalpel also includes a straight tube assembly 300 and a rotation control assembly 700. A first guide wire 10 and a second guide wire 20 are inserted into the blade head assembly 100. A third guide wire 30 and a fourth guide wire 40 are inserted into the serpentine assembly 200. The first guide wire 10 and the third guide wire 30 are detachably connected, and the second guide wire 20 and the fourth guide wire 40 are detachably connected. The first end of the straight tube assembly 300 is connected to the end of the serpentine assembly 200 away from the blade head assembly 100, and the second end of the straight tube assembly 300 is connected to the instrument box 400. The rotation control assembly 700 is drivingly connected to the rotation control knob 430 on the instrument box 400. The rotation control assembly 700 can drive the rotation control knob 430 to rotate, so that the rotation control knob 430 drives the straight tube assembly 300 to rotate.

[0040] Based on the above design, in this embodiment, the first guide wire 10 and the third guide wire 30 are detachably connected, and the second guide wire 20 and the fourth guide wire 40 are detachably connected, thereby achieving a detachable connection between the blade head assembly 100 and the snake bone assembly 200. This facilitates the replacement of the blade head assembly 100, thereby eliminating the need for medical staff to be equipped with a variety of scalpels with different jaws, saving space on the operating table, improving the work efficiency of medical staff, and saving costs. In addition, in this embodiment, through the provision of the rotation control assembly 700, the straight tube assembly 300 can be driven for rotation, thereby enabling the straight tube assembly 300 to drive the snake bone assembly 200 and the blade head assembly 100 to rotate, thereby improving the flexibility and applicability of the scalpel and improving the work efficiency of medical staff.

[0041] In one embodiment, the straight tube assembly 300 and the snake bone assembly 200 can be snap-connected, and the straight tube assembly 300 and the instrument box 400 can also be snap-connected. In addition, other fastening connection forms can also be used, which will not be elaborated here.

[0042] In some optional embodiments, in order to improve the reliability of the assembly of the snake bone component 200 and the cutter head component 100, a transition connection block can be provided at the front end of the snake bone component 200, and the snake bone component 200 and the cutter head component 100 can be detachably connected through the transition connection block.

[0043] The blade assembly 100 in this embodiment includes ultrasonic scalpel jaws, stapler jaws, or electric scalpel jaws, etc. That is, medical staff can flexibly select different types of blade assembly 100 according to actual needs, thereby improving work efficiency.

[0044] In this embodiment, the blade head assembly 100 is provided with a first through groove and a second through groove, and the snake bone assembly 200 is provided with a third through groove and a fourth through groove, the first through groove and the third through groove are connected, and the second through groove and the fourth through groove are connected, and the first through groove, the second through groove, the third through groove and the fourth through groove are respectively passed through the first guide wire 10, the second guide wire 20, the third guide wire 30 and the fourth guide wire 40, thereby preventing the first guide wire 10, the second guide wire 20, the third guide wire 30 and the fourth guide wire 40 from being exposed outside the scalpel, preventing the first guide wire 10, the second guide wire 20, the third guide wire 30 and the fourth guide wire 40 from contaminating the surgical environment, and improving safety.

[0045] In this embodiment, a first through hole and a second through hole are provided on the blade head assembly 100, the first through hole being connected to the first through slot, and the second through hole being connected to the third through slot; the scalpel further includes a first fixing member 900 and a second fixing member, the first fixing member 900 being arranged in the first through hole, the first fixing member 900 detachably connecting the first guide wire 10 and the third guide wire 30, and the second fixing member detachably connecting the second guide wire 20 and the fourth guide wire 40. This embodiment does not limit the number of the first fixing member 900 and the second fixing member. Optionally, the first fixing member 900 and the second fixing member can be configured as screws. Medical staff can achieve connection or disassembly of the first guide wire 10 and the third guide wire 30, and connection or disassembly of the second guide wire 20 and the fourth guide wire 40 by rotating the first fixing member 900 and the second fixing member.

[0046] In one embodiment, as shown in Figures 5-7, the end of the third guide wire 30 near the cutter head assembly 100 is connected to a first slider 800, and the end of the fourth guide wire 40 near the cutter head assembly 100 is connected to a second slider. The first slider 800 and the second slider are respectively provided with a first chute and a second chute. The end of the first guide wire 10 is accommodated in the first chute, and the end of the second guide wire 20 is accommodated in the second chute. The first fixing member 900 passes through the first slider 800 and is connected to the first guide wire 10, and the second fixing member passes through the second slider and is connected to the second guide wire 20. The provision of the first slider 800 is conducive to achieving the connection between the first guide wire 10 and the third guide wire 30, and the provision of the second slider is conducive to achieving the connection between the second guide wire 20 and the fourth guide wire 40, and the first slider 800 and the second slider can slide in the first through groove and the third through groove, respectively, thereby facilitating the control of the opening and closing movement of the clamping member 130 on the cutter head assembly 100 by the instrument box 400.

[0047] Preferably, the first through groove and the second through groove in this embodiment are symmetrically arranged about the axis of the blade head assembly 100, and the third through groove and the fourth through groove are symmetrically arranged about the axis of the snake bone assembly 200, thereby improving the uniformity of the force applied to the scalpel and extending its service life.

[0048] As shown in Figures 8 and 12, in this embodiment, the rotation control assembly 700 includes a second dial 710, a second bevel gear 720, a connecting rod 730, and a third bevel gear 740. The second dial 710 is meshed with the second bevel gear 720, the first end of the connecting rod 730 is meshed with the second bevel gear 720, the second end of the connecting rod 730 is meshed with the third bevel gear 740, and the third bevel gear 740 is connected to the rotation control knob 430. When the cutter head assembly 100 needs to be rotated, the medical staff can turn the second dial 710, which drives the second bevel gear 720 to rotate. The second bevel gear 720 drives the third bevel gear 740 to rotate through the connecting rod 730, which in turn drives the third bevel gear 740 to rotate, thereby causing the rotation of the third bevel gear 740 to drive the rotation of the rotary docking plug 750, which in turn drives the rotation of the rotary control knob 430, and finally causes the rotation of the rotary control knob 430 to drive the straight tube assembly 300 to rotate, thereby achieving the rotation of the cutter head assembly 100.

[0049] The instrument box 400 in this embodiment is a standard part, and the specific details of the internal structure are not repeated here. The rotation control knob 430 is connected to the straight tube assembly 300 through the interior of the instrument box 400, thereby realizing the rotation drive of the straight tube assembly 300.

[0050] In this embodiment, the second bevel gear 720 and the third bevel gear 740 can be provided in multiple groups, which is not limited in this embodiment.

[0051] In this embodiment, the first guide wire 10 , the second guide wire 20 , the third guide wire 30 and the fourth guide wire 40 are stainless steel wires, which improves the strength and service life of the scalpel.

[0052] As shown in Figures 1 to 4, the blade assembly 100 in this embodiment includes a sleeve 110, a transducer 120, and a clamping member 130. Part of the transducer 120 is disposed within the sleeve 110, and the front end of the transducer 120 extends outside the sleeve 110. The transducer 120 is insulated from the inner wall of the sleeve 110. The clamping member 130 is disposed at the front end of the sleeve 110 and is movably connected to the sleeve 110 so that the clamping member 130 can open and close relative to the front end of the transducer 120. The first end of the first guide wire 10 and the first end of the second guide wire 20 are connected to the clamping member 130. The second end of the first guide wire 10 and the second end of the second guide wire 20 pass through the snake assembly 200 and are connected to the jaw control assembly 500. The jaw control assembly 500 can control the opening and closing movement of the clamping member 130 through the first guide wire 10 and the second guide wire 20.

[0053] In one embodiment, a clip 190 is protruding from the clamping member 130 , and the clip 190 and the front end of the transducer 120 form a jaw for clamping or loosening tissue, and in this embodiment, the rear clip 190 is located at the upper end of the clamping member 130 .

[0054] In one embodiment, the jaw control assembly 500 can apply a pulling force to the first guide wire 10, causing the first guide wire 10 to move the upper end of the clamp 130 backward, moving the clip 190 away from the transducer 120, and releasing the tissue. When tissue cutting is required, the jaw control assembly 500 can apply a pulling force to the second guide wire 20, causing the second guide wire 20 to move the lower end of the clamp 130 backward, moving the clip 190 closer to the transducer 120. The clip 190 and the transducer 120 can then clamp the tissue together, and the ultrasonic vibration of the transducer 120 can then achieve tissue cutting. After cutting is completed, the jaw control assembly 500 can apply a pulling force to the first guide wire 10, causing the clip 190 to release the tissue. For example, the tissue can be human or animal skin.

[0055] It should be noted that the transducer 120 in this embodiment is a standard component, and the detailed structure and working principle of the transducer 120 will not be described in detail here.

[0056] The scalpel of this embodiment has a simple structure. The jaw control assembly 500 drives the first guide wire 10 and the second guide wire 20 to achieve the opening and closing movement of the clamping member 130. This avoids the slipping, jamming, and other malfunctions that occur when medical staff stretch the inner sleeve 110 in the related art, thereby improving the work efficiency of medical staff, saving costs, and improving safety. In addition, the transducer 120 of this embodiment is disposed within the sleeve 110, thereby reducing the size of the scalpel and saving space on the operating table.

[0057] As shown in Figures 2 and 3, in this embodiment, a plurality of washers 140 are further provided in the sleeve 110. The washers 140 are located between the inner wall of the sleeve 110 and the transducer 120. The washers 140 are configured to insulate the transducer 120 from the inner wall of the sleeve 110. In addition, a non-metallic spacer 150 is provided at the tail end of the transducer 120. The non-metallic spacer 150 is connected to the sleeve 110 via a fixing pin 160. The washers 140 and the non-metallic spacer 150 can be made of silicone, and the sleeve 110 is made of stainless steel. The provision of the washers 140 and the non-metallic spacer 150 can prevent a short circuit between the transducer 120 and the sleeve 110, thereby extending the service life of the scalpel.

[0058] In addition, a Teflon gasket 1901 is provided on the clip 190 in this embodiment to avoid a short circuit between the clip 190 and the transducer 120 .

[0059] As shown in Figures 2-3, in this embodiment, a fixing ear 170 is provided at the front end of the sleeve 110, and a rotating shaft 180 is passed through the fixing ear 170. A mounting hole is provided on the clamping member 130, and the first end of the rotating shaft 180 is passed through the fixing ear 170, and the second end of the rotating shaft 180 is passed through the mounting hole. The clamping member 130 can rotate around the rotating shaft 180 so that the clamping member 130 can open and close relative to the front end of the transducer 120.

[0060] As shown in Figure 4, in this embodiment, a jaw control knob 410 is provided on the instrument box 400, and the second end of the first guide wire 10 and the second end of the second guide wire 20 are connected in the instrument box 400. The jaw control assembly 500 is driven and connected to the jaw control knob 410, so that the jaw control assembly 500 drives the clamping member 130 through the jaw control knob 410 to realize the opening and closing movement of the clamping member 130.

[0061] In one embodiment, if the scalpel has a detachable blade assembly 100, the first end of the third guide wire 30 is connected to the first guide wire 10, and the second end of the third guide wire 30 is connected to the jaw control knob 410 in the instrument box 400. In other words, the original first guide wire 10 is divided into two detachable parts. Similarly, the second guide wire 20 is also divided into two detachable parts, which will not be described in detail here.

[0062] As shown in Figures 8 and 9, in this embodiment, the scalpel includes a handle 1000, a jaw control assembly 500 including a housing, a fixed shaft 520, a fixed block 530, and a spring 540. The fixed shaft 520 and the fixed block 530 are disposed on the inner wall of the housing. The handle 1000 is connected to the fixed shaft 520 and can rotate about the fixed shaft 520. The spring 540 is disposed between the fixed block 530 and the handle 1000. The jaw control assembly 500 also includes a connecting rope 550, a first bevel gear 560, a hook 570, and a spring 580. The hook 570 is disposed on the handle 1000. The connecting rope 550 is wound around the first bevel gear 560, with a first end of the connecting rope 550 connected to the hook 570 and a second end of the connecting rope 550 connected to the spring 580. The first bevel gear 560 is provided with a jaw joint 590, which is pluggable with the jaw control knob 410. In addition, the jaw control assembly 500 further includes a transmission shaft 510 . The handle 1000 is provided with a through hole, the transmission shaft 510 is passed through the through hole, and a spring 540 is sleeved on the transmission shaft 510 .

[0063] Medical personnel can rotate the jaw-joint connector 590 by pressing the handle 1000. When the instrument box 400 is inserted into the handle 1000, the jaw-joint connector 590 engages with the jaw control knob 410 of the instrument box 400. Therefore, by pressing the handle 1000, the opening and closing of the front-end tool head jaw (clamping member 130) can be controlled. The specific process is as follows: pressing the handle 1000 rotates the handle 1000 around the fixed axis 520, causing the handle 1000 to pull the connecting rope 550, which in turn causes the connecting rope 550 to rotate the first bevel gear 560, and the first bevel gear 560 drives the jaw-joint connector 590 to rotate. When the handle 1000 is released, the connecting rope 550 retracts under the preload of the mainspring 580, and the handle 1000 returns to its original position under the action of the spring 540. During the retraction process, the connecting rope 550 drives the first bevel gear 560 to rotate in the opposite direction, thereby driving the jaw control knob 410 to rotate in the opposite direction, thereby opening and closing the clamping member 130. The X-axis direction in Figure 9 is the pressing direction of the handle 1000.

[0064] The device box 400 in this embodiment is a standard part, and the specific details of the internal structure are not repeated one by one. The jaw control knob 410 is connected to the first guide wire 10 and the second guide wire 20 through the internal part of the device box 400, thereby realizing the opening and closing drive of the clamping member 130.

Claims

1. Scalpel, including: A cutter head assembly (100); A snake bone assembly (200), the cutter head assembly (100) and the snake bone assembly (200) are plug-fitted together; A fifth guide wire (50) and a sixth guide wire (60), wherein the first end of the fifth guide wire (50) and the first end of the sixth guide wire (60) are connected to the snake bone assembly (200), and the second end of the fifth guide wire (50) and the second end of the sixth guide wire (60) are connected to the snake bone control knob (420) in the instrument box (400); A snake bone control component (600), wherein the snake bone control component (600) is drivingly connected to the snake bone control knob (420), and the snake bone control component (600) can drive the snake bone control knob (420) to rotate, so that the fifth guide wire (50) drives the snake bone component (200) to bend in a first direction, or the sixth guide wire (60) drives the snake bone component (200) to bend in a second direction, or the fifth guide wire (50) drives the snake bone component (200) to bend in the first direction and the sixth guide wire (60) drives the snake bone component (200) to bend in the second direction; The first direction and the second direction are opposite.

2. The surgical knife according to claim 1, wherein: The snake bone control component (600) comprises a first dial (610), a connecting pin (620) and a spline (630); a mounting hole is provided on the first dial (610); the spline (630) is arranged on the connecting pin (620); the connecting pin (620) and the spline (630) are installed in the mounting hole so that the first dial (610) can drive the connecting pin (620) to rotate.

3. The surgical knife according to claim 2, wherein: The connecting pin (620) is provided with a groove, a portion of the spline (630) is accommodated in the groove, and another portion of the spline (630) protrudes from the upper end surface of the groove.

4. The surgical knife according to claim 2, wherein: A snake-bone plug-in joint (640) is provided at one end of the connecting pin (620) away from the first dial (610), and the snake-bone plug-in joint (640) is plug-fitted with the snake-bone control knob (420).

5. The scalpel according to claim 2 further includes a handle (1000), the snake bone control assembly (600) is accommodated in a receiving cavity in the handle (1000), and a first bearing (650) and a second bearing (660) are provided on the connecting pin (620), and the outer peripheral surface of the first bearing (650) and the outer peripheral surface of the second bearing (660) are in contact with the inner wall of the receiving cavity.

6. The surgical knife according to claim 5, wherein: A spacer ring (670) is provided on the connecting pin (620), and the spacer ring (670) is configured to limit the position of the first bearing (650).

7. The surgical knife according to claim 5, wherein: The snake bone control component (600) further comprises a buckle (680), wherein the buckle (680) is connected to the handle (1000), and the buckle (680) is configured to limit the position of the second bearing (660).

8. The surgical knife according to claim 5, wherein: The first dial (610) is provided with a plurality of first saw teeth, and the plurality of first saw teeth are arranged at equal intervals.

9. The surgical knife according to claim 1, further comprising a straight tube assembly (300), wherein a first end of the straight tube assembly (300) is connected to the snake bone assembly (200), and a second end of the straight tube assembly (300) is connected to the instrument box (400).

10. The surgical knife according to any one of claims 1 to 9, wherein: The snake bone component (200) is a stainless steel piece.

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