Plasma scalpel adaptable to different surgical requirements

Abstract

This utility model discloses a plasma surgical scalpel adaptable to different surgical needs, relating to the field of medical device technology. It includes a blade body, one end of which is connected to a media delivery tube. A sleeve is fixedly connected to the end of the media delivery tube away from the blade body. A blade head is detachably connected inside the sleeve, and the blade head is equipped with an active electrode. A magnet is detachably connected between the blade head and the sleeve. A groove is provided on the side of the blade head near the blade body, and a positioning block is slidably connected within the groove. An elastic element is fixed between the positioning block and the groove. A positioning hole corresponding to the positioning block is radially opened on the sleeve. An annular groove communicating with the positioning hole is opened on the outer wall of the sleeve. A positioning ring is coaxially rotatably connected to the outside of the sleeve, and an arc-shaped piece is fixed on the side of the positioning ring near the annular groove. A suction port and an air outlet are provided inside the blade head. The media delivery tube includes an infusion tube, a recovery tube, and a gas delivery tube. This application improves the convenience of using the plasma surgical scalpel in surgical operations.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a plasma surgical knife that can adapt to different surgical needs. Background Technology

[0002] Currently, plasma scalpels are being used more and more widely in various soft tissue surgical treatments. They can be effectively used in soft tissue surgical treatments. Plasma scalpels cut tissues using low-temperature plasma, and also have hemostatic functions with minimal damage to surrounding tissues.

[0003] Related technology can be found in Chinese Patent No. CN219480320U, which discloses an adjustable-angle plasma scalpel and surgical device. The adjustable-angle plasma scalpel includes: a handle assembly; a connecting tube, one end of which is disposed on the handle assembly; and a blade head disposed on the other end of the connecting tube. The blade head includes a swivel connector, which is fitted inside the connecting tube and rotatably connected to it. This invention features a connecting tube on the handle assembly and a blade head on the connecting tube. The blade head is connected to the connecting tube via the swivel connector, allowing for rotation. When surgical personnel need to adjust the blade head angle, they can turn off the scalpel and apply force to the blade head to change the relative angle between the blade head and the connecting tube, avoiding the time wasted by frequently changing different scalpels and simplifying the surgical procedure.

[0004] Regarding the aforementioned technologies, in the actual use environment of minimally invasive surgery, there are various usage scenarios. The same surgical blade is difficult to adapt to lesions of different shapes or characteristics. The surgical blade locking mechanism is complex and inconvenient to replace in actual surgical operations, making it difficult to meet the needs of minimally invasive surgery. Utility Model Content

[0005] To improve the convenience of plasma scalpels in surgical operations, this application provides a plasma scalpel that can adapt to different surgical needs.

[0006] This application provides a plasma surgical scalpel that can adapt to different surgical needs, employing the following technical solution:

[0007] A plasma surgical scalpel adaptable to different surgical needs includes a blade body, one end of which is threadedly connected to a medium delivery tube. The end of the medium delivery tube away from the blade body is provided with a sleeve for serving as a loop electrode. A blade head is detachably connected inside the sleeve. An active electrode is provided at the end of the blade head away from the blade body. The end of the blade head away from the sleeve is provided with a contact portion for conforming to the patient's lesion. A quick-release assembly is provided between the blade head and the sleeve, and the sleeve is detached or connected to the blade head through the quick-release assembly.

[0008] By adopting the above technical solution, the blade provides a gripping area for the operator. After the plasma scalpel is activated, the sheath and active electrode work together to provide a safe current circuit for the electrosurgical system. The medium delivery tube delivers the gas to be electrolyzed and physiological saline to the blade head. The active electrode is used to electrolyze the gas to form a plasma thin layer. The blade head uses the kinetic and thermal energy of the plasma to cut tissue. The blade head and sheath are disassembled or fixed by a quick-release assembly, so that during the operation, the operator can select a blade head with a suitable contact shape according to the shape or characteristics of the lesion and quickly change it, which helps to improve the convenience of the operation.

[0009] The quick-release assembly includes a positioning block, an elastic element between the cutter head and the positioning block, a positioning ring coaxially rotatably connected to the outer side of the sleeve, an arc-shaped piece corresponding to the positioning block fixed on the inner wall of the positioning ring, a plurality of positioning holes radially opened in the sleeve, a plurality of grooves corresponding to the positioning holes circumferentially opened on the side of the cutter head near the sleeve, the positioning block is located inside the groove, the positioning block is slidably connected to the cutter head radially, and the elastic element pushes the positioning block away from the cutter head in its natural state. At this time, one end of the positioning block is located in the groove, the other end is located in the positioning hole, and the sleeve has an annular groove communicating with the positioning hole, the arc-shaped piece is located in the annular groove, and the side of the positioning block away from the cutter head has an arc end. When the end of the arc-shaped piece near the axis of the positioning ring contacts the arc end, the positioning block disengages from the positioning hole.

[0010] By adopting the above technical solution, in the initial state, the elastic element applies a pushing force to the pair of positioning blocks, so that one end of the positioning block is located in the groove and the other end is located in the positioning hole, so that the sleeve positions the blade head. At this time, the arc-shaped piece and the positioning hole are in an interlaced state. When the blade head needs to be replaced, the positioning ring is rotated. Under the guidance of the annular groove, the arc-shaped piece contacts the arc end of the positioning block and pushes the arc end to make the positioning block gradually disengage from the positioning hole. When the arc end enters the sleeve, the blade head is moved away from the sleeve, and the blade head can be removed from the sleeve, which is beneficial to improving the convenience of disassembling the plasma scalpel.

[0011] Optionally, the contact part is a hemisphere, and a support column is fixed at one end of the cutter head away from the arc surface, with the support column inserted into the sleeve.

[0012] By adopting the above technical solutions, the different shapes of the contact parts allow operators to select plasma scalpels with different blades to suit lesions of different shapes or characteristics. The hemispherical shape allows the blade to fit snugly against the wound surface, improving the cutting efficiency of the scalpel. The support column and sleeve work together to support and fix the blade, which helps to improve the stability of the surgical operation.

[0013] Optionally, the cutter head has a liquid outlet along its length, and the medium delivery pipe includes an outer pipe and several delivery pipes. One end of the outer pipe is connected to the cutter body, and the sleeve is located at the end of the outer pipe away from the cutter body. The delivery pipes are fixed to the inner wall of the outer pipe and extend along the length of the outer pipe. The delivery pipes are inserted into the inlet and outlet and are in contact with the inner wall of the outlet.

[0014] By adopting the above technical solution, the outer tube connects the blade and the sleeve, and the outer tube supports and guides the infusion tube. Physiological saline is infused into the wound through the infusion tube along the outlet to flush the surgical area, reducing the probability of damage and carbonization adhesion to the patient's wound during the cutting process.

[0015] Optionally, the blade has a suction port and an air outlet along its length. The medium delivery pipe also includes a recovery pipe for recovering physiological saline and a gas delivery pipe for delivering the electrolytic medium. The recovery pipe is inserted into the end of the suction port near the blade body and is in contact with the inner wall of the suction port. The gas delivery pipe is inserted into the end of the air inlet and outlet near the blade body and is in contact with the inner wall of the air outlet.

[0016] By adopting the above technical solution, blood, irrigation fluid, and tissue fragments generated during the operation are absorbed into the recovery tube through the suction port to maintain the clarity of the surgical field. The gas supply tube delivers the electrolytic medium to the gas outlet for electrolysis by the active electrode, providing the kinetic and thermal energy for the blade to cut the tissue.

[0017] Optionally, the inner wall of the sleeve is provided with a guide groove along the length direction that is directly opposite to the positioning hole. When the positioning block is located in the guide groove, the air supply pipe is directly opposite the air outlet and the recovery pipe is directly opposite the suction port.

[0018] By adopting the above technical solution, when the cutter head is inserted into the sleeve, the guide groove guides and limits the positioning block, so that the positioning block can be aligned with the positioning hole to fix the cutter head. The gas supply pipe is tightly connected to the gas outlet to deliver the gas to be electrolyzed without obstruction. The recovery pipe is tightly connected to the suction port to reduce the probability of leakage when recovering blood and saline. This helps to improve the efficiency of cutter head replacement and the sealing of the connection after replacement.

[0019] Optionally, a disc is fixedly provided on the inner side of the outer tube near the cutter head. The disc has a limiting hole adapted to the recovery pipe and the gas supply pipe. The recovery pipe and the gas supply pipe pass through the limiting hole and fit against the inner wall of the corresponding limiting hole.

[0020] By adopting the above technical solution, under the support of the disc, the limiting hole positions the recovery tube and the air supply tube on the side near the cutter head, so that after the cutter head is replaced, the recovery tube and the air outlet tube can be accurately inserted into the suction port and the air outlet to continue working, which helps to improve the accuracy when replacing the cutter head.

[0021] Optionally, the disc is vertically slidably connected to a movable rod that passes through the disc. A fixed block one is fixed on the side of the movable rod near the blade, and a fixed block two is fixed on the side near the blade tip. An elastic element two is provided between the fixed block two and the disc. In its natural state, the elastic element two tends to push the fixed block two away from the disc. The fixed block two abuts against the end of the support column near the blade.

[0022] By adopting the above technical solution, under the support of the disc, the elastic element 2 pushes the fixing block 2 closer to the cutter head, the fixing block 1 abuts against the side of the disc near the cutter body, the fixing block 1 limits the displacement of the moving rod along its own length direction, and the fixing block 2 applies a thrust away from the cutter body to the support column, thereby further fixing the cutter head. When the positioning block is moved out of the positioning hole, the elastic element 2 pushes the cutter head out of the sleeve through the fixing block 2, which helps to improve the convenience of disassembling the cutter head.

[0023] Optionally, an elastic element three is provided between the positioning ring and the sleeve. In its natural state, the elastic element three drives the arc-shaped piece away from the positioning block, and the outer side of the positioning ring is provided with several anti-slip textures along the circumferential direction.

[0024] By adopting the above technical solution, the elastic element three helps to keep the positioning ring stationary when it is not subjected to external force, thereby improving the working stability of the cutter head. The positioning ring returns to its original position, and the anti-slip texture increases the friction force when the operator rotates the positioning ring, making it easier for the operator to rotate the positioning ring.

[0025] Optionally, the cutter head is provided with a magnet, which is located on the inner wall of the cutter head and is fixedly connected to the cutter head coaxially.

[0026] By adopting the above scheme, the magnet generates a magnetic field under the support of the blade, and the magnetic field guides the magnetic nanoparticles to help accurately deliver drugs to the lesion site, which is beneficial to improving the accuracy of drug delivery.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The blade provides a gripping area for the operator. After the plasma scalpel is activated, the sheath and active electrode work together to provide a safe current circuit for the electrosurgical system. The medium delivery tube delivers the gas to be electrolyzed and physiological saline to the blade head. The active electrode is used to electrolyze the gas to form a plasma thin layer. The blade head uses the kinetic and thermal energy of the plasma to cut tissue. The blade head and sheath are detached or fixed by a quick-release assembly, so that during the operation, the operator can select the blade head with the appropriate contact shape according to the shape or characteristics of the lesion and quickly change it, which helps to improve the convenience of the operation.

[0029] 2. In the initial state, the elastic element applies a pushing force to the pair of positioning blocks, so that one end of the positioning block is in the groove and the other end is in the positioning hole, so that the sleeve positions the blade head. At this time, the arc-shaped piece and the positioning hole are in an interlaced state. When the blade head needs to be replaced, rotate the positioning ring. Under the guidance of the annular groove, the arc-shaped piece contacts the arc end of the positioning block and pushes the arc end to make the positioning block gradually disengage from the positioning hole. When the arc end enters the sleeve, move the blade head away from the sleeve, and the blade head can be removed from the sleeve, which helps to improve the convenience of disassembling the plasma scalpel.

[0030] 3. Different contact shapes allow operators to select plasma scalpels with different blades to suit lesions of different shapes or characteristics. The hemispherical shape allows the blade to fit snugly against the wound, improving the cutting efficiency of the scalpel. The support column and sleeve work together to support and fix the blade, which helps to improve the stability of the surgical operation. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of a plasma surgical scalpel that can adapt to different surgical needs.

[0032] Figure 2 This is a diagram designed to highlight the front of the blade.

[0033] Figure 3 This is a schematic diagram designed to highlight the side of the blade.

[0034] Figure 4 This is a cross-sectional schematic diagram of a plasma surgical scalpel that can adapt to different surgical needs.

[0035] Figure 5 This is a schematic diagram designed to highlight the location of the positioning block.

[0036] Figure 6 This is a schematic diagram designed to highlight the position of the curved piece.

[0037] Figure 7 yes Figure 2 An enlarged schematic diagram of part A in the middle.

[0038] Figure 8 This is a schematic diagram designed to highlight the location of the annular groove.

[0039] Explanation of reference numerals in the attached drawings: 1. Blade body; 2. Blade head; 21. Support column; 211. Groove; 22. Contact part; 23. Elastic element one; 24. Positioning block; 241. Arc end; 25. Suction port; 26. Air outlet; 27. Active electrode; 28. Magnet; 29. ​​Liquid outlet; 3. Sleeve; 31. Positioning hole; 32. Annular groove; 33. Positioning ring; 34. Arc-shaped piece; 35. Elastic element three; 36. Guide groove; 37. Anti-slip texture; 4. Medium delivery pipe; 41. Outer pipe; 42. Liquid delivery pipe; 43. Gas delivery pipe; 44. Recovery pipe; 5. Disc; 51. Limiting hole; 52. Moving rod; 53. Fixing block one; 54. Fixing block two; 55. Elastic element two. Detailed Implementation

[0040] The present application will be further described in detail below with reference to all the accompanying drawings.

[0041] This application discloses a plasma surgical scalpel that can adapt to different surgical needs. Example

[0042] Reference Figure 1 and Figure 2 A plasma scalpel adaptable to different surgical needs includes a blade body 1. One end of the blade body 1 is threadedly connected to a medium delivery tube 4 for transporting physiological saline and the gas to be electrolyzed. The end of the medium delivery tube 4 away from the blade body 1 is fixed with a sleeve 3, which is made of metal. A blade head 2 is detachably connected inside the sleeve 3. A quick-release assembly is provided between the blade head 2 and the sleeve 3. The end of the blade head 2 away from the blade body 1 is provided with a contact part 22 for treating the patient's lesion. An active electrode 27 is provided on the outer surface of the contact part 22. The active electrode 27 cooperates with the sleeve 3 to provide a current circuit for the conductivity system. The active electrode 27 electrolyzes the gas to form a plasma thin layer, providing kinetic and thermal energy for the blade head 2 to cut tissue.

[0043] Reference Figure 3 and Figure 4 The contact part 22 is hemispherical, which allows the blade 22 to fit against the patient's wound during the operation. The contact part 22 can also be flat or other shapes. In this embodiment, the hemispherical contact part 22 is used as an example for explanation. A support column 21 is fixedly installed on the side of the blade 2 near the blade body 1. The support column 21 is inserted into the sleeve 3 and fits against the inner wall of the sleeve 3, which helps to improve the stability of the scalpel during operation.

[0044] Reference Figure 1 and Figure 5The quick-release assembly includes a positioning block 24, an elastic element 23, and a positioning ring 33. A plurality of grooves 211 are circumferentially formed on the support column 21. The positioning block 24 is located within and slidably connected to the grooves 211. An elastic element 23, which can be a spring, is provided between the inner wall of the grooves 211 and the positioning block 24. In its natural state, the elastic element 23 tends to push the positioning block 24 away from the inner wall of the grooves 211. Initially, when the cutter head 2 is installed in the sleeve 3, one end of the positioning block 24 is located inside the groove 211, and the other end is located outside the groove 211. The positioning ring 33 is sleeved on the outside of the sleeve 3 and rotatably connected to the sleeve 3. An arc-shaped end 241 is fixed to the end of the positioning block 24 facing away from the support column 21.

[0045] Reference Figure 5 and Figure 6 The sleeve 3 has an annular groove 32 circumferentially formed on its outer side, and a positioning hole 31 communicating with the annular groove 32 is formed radially on the sleeve 3. The size and position of the positioning hole 31 are adapted to the positioning block 24, and the inner wall of the positioning ring 33 is directly opposite the annular groove 32. An arc-shaped piece 34 is fixed on the inner wall of the positioning ring 33. When the positioning ring 33 is rotated, the arc-shaped piece 34 gradually moves closer to the positioning block 24 under the limiting action of the annular groove 32. When the end of the arc-shaped piece 34 furthest from the positioning ring 33 contacts the arc end 241, the positioning block 24 disengages from the positioning hole 31.

[0046] Reference Figure 1 and Figure 6 An elastic element 35 is provided between the positioning ring 33 and the sleeve 3. The elastic element 35 can be a worm spring. In its natural state, the elastic element 35 tends to pull the arc-shaped piece 34 away from the positioning block 24, which helps to keep the positioning ring 33 stationary when no external force is applied. Several anti-slip textures 37 are provided on the outer surface of the positioning ring 33 to increase the friction when the operator rotates the positioning ring 33, making it easier for the operator to rotate the positioning ring 33 and improving the stability of the cutter head 2 during operation.

[0047] Reference Figure 1 and Figure 7 A disc 5 is fixed inside the medium conveying pipe 4. A moving rod 52 is slidably connected to the disc 5. The moving rod 52 is perpendicular to the disc 5. A fixing block 1 53 is fixedly installed on the side of the moving rod 52 near the blade 1. A fixing block 2 54 is fixedly installed on the side of the moving rod 52 near the blade head 2. An elastic element 2 55 is provided on the moving rod 52. The elastic element 2 55 can be a spring. The spring is sleeved on the moving rod 52.

[0048] Refer to 1 and Figure 7 In its natural state, the spring pushes the fixed block 53 closer to the support column 21 (reference). Figure 3At this time, fixing block 1 53 abuts against the side of the disc 5 near the blade 1, fixing block 1 53 limits the displacement of the moving rod 52 along its own length direction, and fixing block 2 54 pushes the support column 21 (see reference). Figure 3 The blade head 2 is further secured away from the blade body 1. When the positioning block 24 is removed from the positioning hole 31, the elastic element 55 pushes the blade head 2 out of the sleeve 3 through the fixing block 54, which helps to improve the convenience of disassembling the blade head 2.

[0049] Reference Figure 1 and Figure 7 The media delivery tube 4 includes an outer tube 41 and multiple infusion tubes 42. The outer tube 41 connects the blade body 1 and the sleeve 3. The infusion tubes 42 are fixed to the inner wall of the outer tube 41, and the outer tube 41 supports and guides the infusion tubes 42. The blade body 1 is connected to the infusion tubes 42, and saline solution is delivered to the blade head 2 through the infusion tubes 42. The blade head 2 has an outlet 29 along its length. Saline solution flows out from the infusion tubes 42 and flows through the outlet 29 to the surgical wound, allowing the saline solution to flush the surgical area and reduce the probability of damage and carbonization adhesion to the patient's wound during the operation.

[0050] Reference Figure 4 and Figure 7 The cutter head 2 has a suction port 25 and an air outlet 26 along its length. The medium conveying pipe 4 also includes an air conveying pipe 43 and a recovery pipe 44. The end of the suction port 25 away from the cutter head 2 is connected to the recovery pipe 44. The recovery pipe 44 passes through the cutter body 1 (reference). Figure 1 The external recovery system is connected to the blade body 1. The external recovery system draws saline solution from the blade head 2 via the recovery tube 44. The end of the air outlet 26 furthest from the blade head 2 is connected to the air supply tube 43, which passes through the blade body 1 (reference). Figure 1 The device is connected to an external gas supply system, which supplies electrolyzed gas to the cutting head 2 via a gas delivery pipe 43. Both the external gas supply system and the external recovery system are existing technologies and will not be described in detail here. During the procedure, the electrolyzed gas is delivered along the gas delivery pipe 43 to the gas outlet 26, and the active electrode 27 (see reference)... Figure 1 The gas to be electrolyzed, blood, and saline solution are absorbed into the recovery tube 44 through the suction port 25 to maintain the clarity of the surgical field.

[0051] Reference Figure 7 A limiting hole 51 is provided on the disc 5. The maximum diameter of the gas supply pipe 43 and the recovery pipe 44 is in contact with the limiting hole 51. The gas supply pipe 43 and the recovery pipe 44 pass through the corresponding limiting hole 51, and the limiting hole 51 positions the gas supply pipe 43 and the recovery pipe 44.

[0052] Reference Figure 5 and Figure 8The inner wall of the sleeve 3 has a guide groove 36 along the length of the sleeve 3, which is directly opposite the positioning hole 31. Install the cutter head 2 (see reference). Figure 1 When the positioning block 24 enters the sleeve 3 along the guide groove 36, the positioning block 24 is aligned with the positioning hole 31. The positioning block 24 passes through the positioning hole 31, so that one end of the positioning block 24 is in the groove 211 and the other end is in the positioning hole 31, thereby aligning the cutter head 2 (refer to...). Figure 1 ( ) is fixed.

[0053] Reference Figure 4 A magnet 28 is fixed inside the blade head 2. The magnet 28 is placed close to the inner wall of the blade head 2. During the operation, a drug containing magnetic nanoparticles is added to the patient's wound. Under the guidance of the magnetic field of the magnet 28, the magnetic nanoparticles can accurately reach the target tissue or organ.

[0054] The implementation principle of a plasma scalpel adaptable to different surgical needs in this application embodiment is as follows: When the operator changes the scalpel head 2, the positioning ring 33 is rotated, causing the arc-shaped plate 34 to push the positioning block 24 along the positioning hole 31 into the groove 211. Before the arc end 241 is fully inserted into the groove 211, the scalpel head 2 can be pulled out from the sleeve 3 under the pushing action of the elastic element 55, so as to realize the disassembly of the scalpel head 2. The scalpel is started, and physiological saline enters the surgical area along the infusion tube 42. The gas infusion tube 43 delivers the gas to be electrolyzed to the gas outlet 26. The active electrode 27 electrolyzes the gas to provide the kinetic and thermal energy for the scalpel head 2 to cut tissue. The recovery tube 44 absorbs blood and flushing fluid through the suction port 25 to avoid affecting the surgical field of vision. During the operation, the disassembly process of changing the scalpel head 2 to adapt to the lesion is relatively convenient, which is conducive to improving the convenience of the scalpel operation.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A plasma surgical scalpel adaptable to different surgical needs, comprising a blade (1), one end of which is threadedly connected to a medium delivery tube (4), the end of the medium delivery tube (4) away from the blade (1) being provided with a sleeve (3) for serving as a loop electrode, the end of the sleeve (3) away from the medium delivery tube (4) being provided with a blade head (2), and the end of the blade head (2) facing away from the blade (1) being provided with an active electrode (27), characterized in that: The blade (2) is provided with a contact part (22) for fitting the patient's lesion at one end away from the sleeve (3). A quick-release assembly is provided between the blade (2) and the sleeve (3), and the sleeve (3) is connected to the blade (2) through the quick-release assembly.

2. The plasma surgical scalpel according to claim 1, adaptable to different surgical needs, characterized in that: The quick-release assembly includes a positioning block (24), an elastic element (23) between the cutter head (2) and the positioning block (24), a positioning ring (33) is coaxially rotatably connected to the outer side of the sleeve (3), an arc-shaped piece (34) corresponding to the positioning block (24) is fixed on the inner wall of the positioning ring (33), a plurality of positioning holes (31) are opened radially on the sleeve (3), a plurality of grooves (211) corresponding to the positioning holes (31) are opened circumferentially on the side of the cutter head (2) near the sleeve (3), the positioning block (24) is located inside the groove (211), and the positioning block (24) slides radially with the cutter head (2). In the dynamic connection, the elastic element 1 (23) pushes the positioning block (24) away from the cutter head (2) in its natural state. At this time, one end of the positioning block (24) is located in the groove (211), and the other end is located in the positioning hole (31). The sleeve (3) is provided with an annular groove (32) that communicates with the positioning hole (31). The arc-shaped piece (34) is located in the annular groove (32). The side of the positioning block (24) away from the cutter head (2) is provided with an arc end (241). When the end of the arc-shaped piece (34) close to the axis of the positioning ring (33) contacts the arc end (241), the positioning block (24) disengages from the positioning hole (31).

3. The plasma surgical scalpel according to claim 1, adaptable to different surgical needs, characterized in that: The contact part (22) is a hemisphere, and a support column (21) is fixed at one end of the cutter head (2) away from the arc surface. The support column (21) is inserted into the sleeve (3).

4. A plasma surgical scalpel adaptable to different surgical needs according to claim 1, characterized in that: The cutter head (2) has an outlet (29) along its length. The medium delivery pipe (4) includes an outer pipe (41) and several delivery pipes (42). One end of the outer pipe (41) is connected to the cutter body (1). The sleeve (3) is located at the end of the outer pipe (41) away from the cutter body (1). The delivery pipes (42) are fixed to the inner wall of the outer pipe (41) and extend along the length of the outer pipe (41). The delivery pipes (42) are inserted into the inlet and outlet (29) and the delivery pipes (42) are in contact with the inner wall of the outlet (29).

5. A plasma surgical scalpel adaptable to different surgical needs according to claim 1, characterized in that: The blade (2) has a suction port (25) and an air outlet (26) along its length. The medium delivery pipe (4) also includes a recovery pipe (44) for recovering physiological saline and a gas delivery pipe (43) for delivering the electrolytic medium. The recovery pipe (44) is inserted into the end of the suction port (25) near the blade body (1) and the recovery pipe (44) is in contact with the inner wall of the suction port (25). The gas delivery pipe (43) is inserted into the end of the air outlet (26) near the blade body (1) and the gas delivery pipe (43) is in contact with the inner wall of the air outlet (26).

6. A plasma surgical scalpel adaptable to different surgical needs according to claim 1, characterized in that: The inner wall of the sleeve (3) is provided with a guide groove (36) that is directly opposite to the positioning hole (31) along the length direction. When the positioning block (24) is located in the guide groove (36), the gas supply pipe (43) is directly opposite to the gas outlet (26), and the recovery pipe (44) is directly opposite to the suction port (25).

7. A plasma surgical scalpel adaptable to different surgical needs according to claim 4, characterized in that: A disc (5) is fixedly provided on the inner side of the outer tube (41) near the cutter head (2). A limiting hole (51) adapted to the recovery tube (44) and the gas supply tube (43) is opened on the disc (5). The recovery tube (44) and the gas supply tube (43) pass through the limiting hole (51) and fit against the inner wall of the corresponding limiting hole (51).

8. A plasma surgical scalpel adaptable to different surgical needs according to claim 7, characterized in that: The disc (5) is vertically slidably connected to a moving rod (52), which passes through the disc (5). A fixing block 1 (53) is fixed on the side of the moving rod (52) near the blade (1), and a fixing block 2 (54) is fixed on the side near the blade head (2). An elastic element 2 (55) is provided between the fixing block 2 (54) and the disc (5). The elastic element 2 (55) has a tendency to push the fixing block 2 (54) away from the disc (5) in its natural state. The fixing block 2 (54) abuts against the end of the support column (21) near the blade (1).

9. A plasma surgical scalpel adaptable to different surgical needs according to claim 2, characterized in that: An elastic element (35) is provided between the positioning ring (33) and the sleeve (3). In its natural state, the elastic element (35) drives the arc-shaped piece (34) away from the positioning block (24), and the outer side of the positioning ring (33) is provided with several anti-slip textures (37) along the circumferential direction.

10. A plasma surgical scalpel adaptable to different surgical needs according to claim 1, characterized in that: The cutter head (2) is provided with a magnet (28), which surrounds the outside of the cutter head (2) and is coaxially fixedly connected to the cutter head (2).

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