Plasma excitation device for electrode

Abstract

The invention relates to the technical field of medical equipment, and provides a plasma excitation device for an electrode, the plasma excitation device comprises a knife handle main body, a knife head structure and a rotating structure, one end of the knife handle main body is provided with a mounting shell, and the knife head structure is rotatably connected with the mounting shell; the rotating structure comprises a rotating rod, a switching assembly, two sets of first bevel gears connected with the tool bit structure and two sets of second bevel gears rotationally connected with the tool handle body, the two sets of first bevel gears are engaged with the two sets of second bevel gears correspondingly, and the tooth pitches of the two sets of first bevel gears are different; the rotating rod is rotationally connected with the two groups of second bevel gears; an inserting block is slidably mounted on the outer wall of the rotating rod and located between the two sets of second bevel gears. The two sets of second bevel gears are provided with a plurality of inserting grooves allowing the inserting blocks to be inserted, and the switching assembly is used for driving the inserting blocks to be inserted into the inserting grooves of the two sets of second bevel gears correspondingly. According to the plasma excitation device for the electrode, the tool bit structure can conveniently and accurately reach the focus position.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to a plasma excitation device for an electrode. Background Art

[0002] At present, electrosurgical instruments used in surgical operations are widely used for tissue cutting and hemostasis. These instruments achieve the purpose of surgery through different energy forms (such as radio frequency, laser, ultrasound, etc.). Among them, plasma-based electrosurgical tools have attracted attention due to their high precision and good tissue effect.

[0003] Existing electrosurgery includes a handle body and a blade head structure arranged at one end of the handle body. The blade head structure is composed of an insulating sleeve, an electrode head and a wire. One end of the insulating sleeve is connected to the handle body and wrapped around the outer wall of the wire to prevent current leakage; the handle body is provided with a power cord, the power cord is used to electrically connect an external power source, and the wire is used to connect the electrode head and the power cord; the electrode head includes an insulating part and a conductive part wrapped around the outer wall of the insulating part.

[0004] The handle body is provided with a gripping part and a pushing part, and the pushing part is slidably installed on the outer wall of the handle body; during use, the staff's middle finger and ring finger hook the gripping part, and the thumb contacts and presses the pushing part, so that the blade structure can activate the reaction to cut the tissue and stop bleeding.

[0005] However, during the use of this type of electrosurgical electrode, the staff needs to constantly rotate the direction of the electrode blade. Due to the limitation of the shape of the electrode handle, it is inconvenient for the staff to rotate the blade after wearing medical gloves. It is difficult to rotate the blade flexibly, making it difficult for the electrode blade to accurately reach the lesion location, resulting in the lesion not being cleared, affecting the surgical effect. Summary of the invention

[0006] In order to facilitate the tool head structure to accurately reach the lesion location, the present application provides a plasma excitation device for the electrode.

[0007] The present application provides a plasma excitation device for an electrode, which adopts the following technical solution: A plasma excitation device for an electrode, comprising a tool handle body, a tool head structure and a rotating structure, wherein a mounting shell is installed at one end of the tool handle body, the tool head structure is rotatably connected to the mounting shell, and the mounting shell is provided with a fixing structure for fixing the tool head structure and the mounting shell; the rotating structure comprises a rotating rod, a switching assembly, two groups of first bevel gears connected to the tool head structure, and two groups of second bevel gears rotatably connected to the tool handle body, the two groups of the first bevel gears are respectively meshed with the two groups of the second bevel gears, and the tooth pitches of the two groups of the first bevel gears are different; The rotating rod is rotatably installed on the outer wall of the mounting shell, and one group of second bevel gears is provided with a movable hole, and one end of the rotating rod is inserted into the movable hole and is rotatably connected to the other group of second bevel gears; a plug-in block is slidably installed on the outer wall of the rotating rod, and the plug-in block is located between the two groups of second bevel gears; a plurality of plug-in slots for plug-in of the plug-in blocks are provided on the side where the two groups of second bevel gears are close to each other, and the mounting shell is provided with a switching component for driving the plug-in blocks to be respectively plugged into the plug-in slots of the two groups of second bevel gears.

[0008] By adopting the above-mentioned technical solution, the design of the rotatable connection between the cutter head structure and the mounting shell enables the cutter head to rotate, and after the cutter head structure rotates, it is fixed to the handle body by a fixing structure, so that the cutter head points to the lesion location, thereby improving the accuracy and success rate of the operation.

[0009] By setting up a switching component, the rotating rod can be fixed to the two second bevel gears respectively. When the rotating rod is fixed to the second bevel gear with a larger tooth pitch, the first bevel gear meshing therewith is subjected to a larger driving force, thereby realizing a large rotation of the cutter head structure, allowing the staff to quickly adjust the structure of the cutter head; when the rotating rod is fixed to the second bevel gear with a smaller tooth pitch, the first bevel gear meshing therewith is subjected to a smaller driving force, thereby realizing a subtle rotation of the cutter head structure; the doctor can fine-tune the cutter head during the operation to ensure the accuracy and safety of the operation.

[0010] By combining large and small rotations, staff can more flexibly adjust the position and orientation of the blade to accommodate different surgical needs and patient conditions; this flexibility not only improves surgical precision but also reduces surgical risks.

[0011] Optionally, the switching assembly includes a sliding block and a first spring, the elastic force of the first spring is used to drive the plug-in block to be plugged into a plug-in slot of one of the second bevel gears; the sliding block is slidably mounted on the outer wall of the rotating rod and connected to the plug-in block.

[0012] By adopting the above-mentioned technical solution, the plug-in block can be accurately plugged into the plug-in slot of one group of second bevel gears under the elastic force of the first spring, thereby realizing a stable transmission connection; when it is necessary to switch to another group of second bevel gears, the staff pulls the sliding block; this action will drive the sliding block to slide on the outer wall of the rotating rod, thereby driving the plug-in block connected to the sliding block to start moving; the plug-in block will gradually disengage from the currently plug-in slot, so that it can be plugged into the plug-in slot of another group of second bevel gears, thereby forming a new transmission connection.

[0013] Optionally, the switching components are provided in multiple groups, and all positioning components are arranged at intervals along the outer peripheral wall of the rotating rod. The outer wall of the rotating rod is sleeved with a connecting ring, and the connecting ring is connected to all sliding blocks.

[0014] By adopting the above technical solution, the setting of multiple sets of switching components can increase the contact area between the rotating rod and the second bevel gear, and improve the stability of the rotation of the rotating rod; and by pulling the connecting ring, all sliding blocks can be driven to move, thereby improving the switching efficiency.

[0015] In addition, the staff uses the thumb and index finger to hold the rotating rod and abut against one side of the connecting ring so that the plug-in block can maintain the plug-in state with the other set of second bevel gears. At the same time, the rotating rod can be rotated to change the direction of the cutter head structure; the convenience of rotating the rotating rod when the plug-in block is switched to connect with another second bevel gear is improved.

[0016] Optionally, a positioning groove is provided on the outer wall of the rotating rod, and a positioning rod for abutting against one side of the rotating ring is slidably installed in the positioning groove; when the positioning rod abuts against one side of the rotating ring, the plug-in block is plugged into the plug-in groove of another group of second bevel gears; a second spring is provided between the positioning rod and the inner wall of the positioning groove, and the elastic force of the second spring is used to drive the positioning rod to move toward a side away from the positioning groove.

[0017] By adopting the above-mentioned technical solution, when the plug-in block is fully inserted into the plug-in slot of another group of second bevel gears, the connecting ring abuts against one side of the positioning rod under the elastic force of the first spring; the situation in which the plug-in rod is reinserted into the plug-in slot of a group of second bevel gears under the elastic force of the first spring when the staff releases the pulling force on the connecting ring is reduced, so that the staff can rotate the rotating rod conveniently.

[0018] Optionally, the positioning rod is provided with a guide surface for guiding the positioning rod into the positioning groove.

[0019] By adopting the above-mentioned technical solution, during the process of the plug-in block being plugged into the plug-in slot of another set of second bevel gears, the connecting ring abuts against the guide surface of the positioning rod and guides the positioning rod into the positioning slot, so that the connecting ring is smoothly positioned and the plug-in block is smoothly plugged into the plug-in slot of another set of second bevel gears.

[0020] Optionally, the switching assembly includes a sliding ring, a connecting rod and a movable rod, the sliding ring is sleeved on the outer wall of the rotating rod and connected to the plug-in block; the inner wall of the sliding ring is provided with a positioning block, and the outer wall of the rotating rod is provided with a positioning groove for the positioning block to slide; the connecting rod is installed on the outer wall of the sliding ring, and the extension direction of the connecting rod is perpendicular to the extension direction of the rotating rod; A switching hole is provided on the outer wall of the mounting shell, and the movable rod is passed through the switching hole and is rotatably connected to the connecting rod; a first threaded portion is provided on the outer wall of the movable rod, and a second threaded portion for cooperating with the first threaded portion is provided on the inner wall of the switching hole.

[0021] By adopting the above-mentioned technical solution, by rotating the movable rod, due to the cooperation of the first threaded portion and the second threaded portion, the rotation of the movable rod will drive the connecting rod and the sliding ring to move on the outer wall of the rotating rod; so that the plug-in block is disengaged from the plug-in slot of one group of second bevel gears and plugged into the plug-in slot of another group of second bevel gears; thereby realizing the switching of the cutter head structure from a large rotation to a small rotation; and the structure is simple, so that the staff can perform quick switching.

[0022] Optionally, the outer wall of the movable rod is covered with a rubber sleeve.

[0023] By adopting the above technical solution and providing the rubber sleeve, the friction between the hand of the worker and the outer wall of the movable rod can be increased, so as to facilitate the rotation of the movable rod.

[0024] Optionally, the fixing structure includes an annular airbag, a connecting airbag, a fixing block and a third spring, the annular airbag is sleeved on the outer wall of the rotating rod and is located outside the mounting shell; the mounting shell is provided with a mounting groove, the fixing block is installed in the mounting groove and slidably installed on the outer wall of the rotating rod, and the sliding direction of the fixing block is in the same direction as the extension direction of the rotating rod; A plurality of fixing grooves for inserting a fixing block are provided on one side of the installation groove close to the annular airbag, and the elastic force of the third spring is used to drive the fixing block to be inserted into the fixing groove under normal conditions; a connecting groove is provided on the rotating rod, and the connecting airbag is installed in the connecting groove and connected to the fixing block, and the connecting airbag is communicated with the annular airbag.

[0025] By adopting the above-mentioned technical solution, when the cutter head structure needs to be rotated, the staff presses the annular airbag with their hands, the annular airbag is squeezed and the gas in the annular airbag is squeezed into the connecting airbag; at this time, the connecting airbag expands in the connecting groove, so that the fixed block connected to the connecting airbag can be pushed toward the side away from the fixed groove, so that the fixed block can cancel the insertion of the fixed groove; thereby, the rotating rod can be rotated to adjust the direction of the cutter head.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting up a switching component, the blade structure can rotate greatly or slightly, and the staff can more flexibly adjust the position and direction of the blade to adapt to different surgical needs and patient conditions; this flexibility not only improves the accuracy of the surgery, but also reduces the risk of surgery; 2. By setting up a fixed structure, the gas in the annular airbag can be squeezed into the connecting airbag by squeezing the annular airbag; so that the connecting airbag expands in the connecting groove, so that the fixed block connected to the connecting airbag can be pushed toward the side away from the fixing groove, so that the fixed block cancels the insertion of the fixing groove; so as to facilitate the rotation of the rotating rod, and the setting of the annular airbag can increase the friction between the staff's hand and the rotating rod, so as to facilitate the rotation of the rotating rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of Example 1; Figure 2 is a partial cross-sectional view of the mounting housing of Example 1; Figure 3 is a schematic diagram of the installation of the handle body and the mounting seat of Example 1; Figure 4 yes Figure 2 A local enlarged view of point a; Figure 5 is a schematic diagram of the structure of the switching component of Example 1; Figure 6 is a schematic structural diagram of a positioning rod of Example 1; Figure 7 is a structural schematic diagram of the fixing structure of Example 1; Figure 8 is a schematic diagram of the structure of the switching component of Example 2; Fig. 9 yes Figure 8 A local enlarged view of point b.

[0028] Description of reference numerals: 1. handle body; 11. gripping part; 12. starting part; 2. cutter head structure; 21. wire connector; 22. insulating sleeve; 23. connecting seat; 3. rotating structure; 31. rotating rod; 311. sliding groove; 312. positioning groove; 313. annular groove; 314. connecting groove; 315. cover plate; 316. sliding groove; 317. guide block; 318. guide groove; 32. switching assembly; 321. sliding block; 322. first spring; 323. connecting ring; 324. sliding ring; 325. connecting rod; 326. movable rod; 3 27. annular slide groove; 328. fourth spring; 33. first bevel gear; 34. second bevel gear; 341. movable hole; 342. plug-in slot; 35. rubber sleeve; 4. mounting shell; 41. mounting seat; 42. mounting opening; 43. mounting slot; 44. rotating seat; 45. connecting hole; 46. fixing slot; 47. switching hole; 48. first threaded portion; 5. plug-in block; 51. plug-in block; 6. positioning rod; 61. guide surface; 62. second spring; 7. fixing structure; 71. annular airbag; 72. connecting airbag; 73. fixing block; 74. third spring. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 -Attached Fig. 9 This application is described in further detail. Example 1

[0030] The embodiment of the present application discloses a plasma excitation device for an electrode.

[0031] Reference Figure 1 A plasma excitation device for an electrode comprises a handle body 1, a cutter head structure 2 and a rotating structure 3. Grip portions 11 are provided on opposite sides of the handle body 1. The two grip portions 11 are used for the index finger and the middle finger of a staff member to hook, so that the staff member can stably hold the handle body 1. The handle body 1 is provided with a starting portion 12. The staff member can drive the cutter head structure 2 to react by pressing the starting portion 12.

[0032] Also refer to Figure 2 and Figure 3 A mounting shell 4 is provided at one end of the handle body 1, and the mounting shell 4 is located on the side of the gripping portion 11 away from the starting portion 12; the mounting shell 4 is provided with a mounting groove 43, and a mounting seat 41 is installed in the mounting groove 43, and the mounting seat 41 is provided with a mounting opening 42; the handle body 1 is rotatably installed on the mounting shell 4, and the mounting shell 4 is provided with a fixing structure 7 for fixing the mounting shell 4 to the cutter head structure 2; the cutter head structure 2 is provided with a wire connector 21 for plugging into the mounting opening 42, and the plug-in cooperation of the wire connector 21 and the mounting opening 42 can connect the cutter head structure 2 to the power supply.

[0033] Reference Figure 2 The rotating structure 3 includes a rotating rod 31, a switching assembly 32, two groups of first bevel gears 33 and two groups of second bevel gears 34. The two first bevel gears 33 are connected to the cutter head structure 2 and are located in the mounting groove 43. The tooth pitches of the two groups of first bevel gears 33 are different. Two rotating seats 44 are provided in the mounting groove 43. The two second bevel gears 34 are rotatably mounted on the two rotating seats 44, and the two second bevel gears 34 are respectively meshed with the two first bevel gears 33. It can be understood that the tooth pitches of the two second bevel gears 34 are different. In this embodiment, the tooth pitch of the first bevel gear 33 close to the mounting seat 41 is smaller than the tooth pitch of the first bevel gear 33 away from the mounting seat 41.

[0034] Reference Figure 2 and Figure 4A connecting hole 45 communicating with the mounting groove 43 is formed on the outer wall of the mounting shell 4, a movable hole 341 is formed on one of the second bevel gears 34, and one end of the rotating rod 31 is sequentially passed through the connecting hole 45 and the movable hole 341 to be rotatably connected with the other second bevel gear 34; a plurality of plug-in blocks 5 are slidably mounted on the outer wall of the rotating rod 31. In the present embodiment, two groups of plug-in blocks 5 are provided, and the two groups of plug-in blocks 5 are provided on opposite sides of the rotating rod 31, and all the plug-in blocks 5 are located between the two second bevel gears 34.

[0035] Reference Figure 5 In this embodiment, the rotating rod 31 is provided with a sliding groove 311 for the plug-in block 5 to slide, and one end of the sliding groove 311 is connected to the outside; the two second bevel gears 34 are provided with a plurality of plug-in grooves 342 for the plug-in block 5 to be plugged in on the side close to each other, and the switching component 32 is used to drive the plug-in block 5 to slide in the sliding groove 311 and be respectively plugged in the plug-in grooves 342 of the two second bevel gears 34.

[0036] Reference Figure 5 In this embodiment, multiple groups of switching components 32 are provided, and all switching components 32 are respectively connected to each plug-in block 5; the switching component 32 includes a sliding block 321 and a first spring 322, and the sliding block 321 is slidably installed in the sliding groove 311. The two ends of the first spring 322 are respectively connected to the inner wall of the sliding groove 311 and the side of the sliding block 321 away from the plug-in block 5, and the elastic force of the first spring 322 is used to drive the plug-in block 5 to move toward the side away from the first spring 322 and plug into the plug-in groove 342 of one of the second bevel gears 34; the plug-in cooperation between the plug-in groove 342 and the plug-in block 5 can fix the rotating rod 31 and the second bevel gear 34, so as to rotate the second bevel gear 34 fixed to the rotating rod 31.

[0037] Reference Figure 6 A connecting ring 323 is sleeved on the outer wall of the rotating rod 31, and the connecting ring 323 is fixed to all the sliding blocks 321. By pulling the connecting ring 323, all the plug-in blocks 5 can be slid at the same time, so that the plug-in blocks 5 are disengaged from the plug-in grooves 342 of one group of second bevel gears 34 and plugged into the plug-in grooves 342 of another group of second bevel gears 34.

[0038] Also refer to Figure 5A positioning groove 312 is provided on the outer wall of the rotating rod 31, and the extension direction of the positioning groove 312 is perpendicular to the extension direction of the rotating rod 31; a positioning rod 6 is slidably installed in the positioning groove 312, and a second spring 62 is provided between the positioning rod 6 and the positioning groove 312, and the elastic force of the second spring 62 is used to drive the positioning rod 6 to move toward the side away from the positioning groove 312; a guide surface 61 is provided on the side of the positioning rod 6 close to the second bevel gear 34, and a positioning surface is provided on the side of the positioning rod 6 away from the second bevel gear 34, and the distance between the guide surface 61 and the positioning surface decreases from the side close to the positioning groove 312 to the side away from the positioning groove 312.

[0039] When the locking cam 323 is in the unlocking state, the locking cam 323 is in the unlocking state, and the locking cam 323 is in the unlocking state, so that the locking cam 323 is unlocked and the locking cam 323 is unlocked.

[0040] Reference Figure 7 The fixing structure 7 includes an annular airbag 71, a connecting airbag 72, a fixing block 73 and a third spring 74. An annular groove 313 is provided on the outer side of the rotating rod 31, and the annular airbag 71 is partially embedded in the inner wall of the annular groove 313; the rotating rod 31 is provided with a connecting groove 314 connected to the annular groove 313, one side of the connecting groove 314 extends toward one side of the second bevel gear 34 and is connected to the mounting groove 43, the connecting airbag 72 is embedded in the connecting groove 314 and is connected to the annular airbag 71; a cover plate 315 is welded to the rotating rod 31, and the cover plate 315 covers the surface of the connecting groove 314 to reduce the exposure of the connecting airbag 72 to the outside.

[0041] A sliding groove 316 is provided at one end of the connecting groove 314 away from the annular groove 313, and the fixed block 73 is slidably installed in the sliding groove 316 and is located in the mounting groove 43. The end of the connecting airbag 72 away from the annular airbag 71 is connected to the fixed block 73, and the inner wall of the mounting groove 43 is provided with a plurality of fixing grooves 46 for the fixing block 73 to be plugged in; the two ends of the third spring 74 are respectively connected to the inner wall of the sliding groove 316 and the side of the fixing block 73 away from the connecting airbag 72, and the elastic force of the third spring 74 is used to drive the fixing block 73 to be plugged into the fixing groove 46 under normal conditions.

[0042] When the cutter head structure 2 needs to be rotated, the staff member presses the annular airbag 71 with his hand, the annular airbag 71 is squeezed and the gas in the annular airbag 71 is squeezed into the connecting airbag 72; at this time, the connecting airbag 72 expands in the connecting groove 314, so that the fixing block 73 connected to the connecting airbag 72 can be pushed toward the side away from the fixing groove 46, so that the fixing block 73 cancels the insertion of the fixing groove 46; thereby, the rotating rod 31 can be rotated to adjust the direction of the cutter head structure 2; in addition, the provision of the annular airbag 71 can increase the friction between the staff member's hand and the rotating rod 31, so that the staff member can rotate the rotating rod 31.

[0043] When the orientation of the cutter head structure 2 is adjusted, the staff member releases the contact between his hand and the rotating rod 31 and releases the pressure on the annular airbag 71. At this time, the elastic force of the third spring 74 can drive the fixing block 73 to be reinserted into the fixing groove 46, and the gas in the connecting airbag 72 is squeezed into the annular airbag 71 again, so that the annular airbag 71 is restored to its original state, so that the rotating rod 31 can be unlocked again.

[0044] Reference Figure 1 The cutter head structure 2 includes a connecting seat 23, an insulating sleeve 22 installed on the connecting seat 23, an electrode head and a wire. The connecting seat 23 is rotatably connected to the mounting shell, and two sets of first bevel gears 33 are installed on the connecting seat 23; the two ends of the wire (not shown in the figure) are respectively connected to the connecting seat 23 and the electrode head (not shown in the figure), the wire connector 21 is installed on the connecting seat 23 and connected to the wire, and the insulating sleeve 22 is wrapped around the outer wall of the wire; the electrode head includes an insulating part and a conductive part wrapped around the outer wall of the insulating part, the insulating part is made of insulating material, the conductive part is made of conductive material, and the insulating part and the conductive part are both connected to the wire.

[0045] When voltage is applied to the electrode head, electrons flow from the conductive part to the insulating part. In this process, the electrons collide with gas molecules, exciting the gas molecules and causing them to transition from the ground state to the excited state, thereby forming plasma. Plasma can directly break the molecular bonds of tissues, causing a series of chemical reactions in tissue proteins, achieving a variety of effects such as vaporization, cutting, and ablation of tissues.

[0046] The implementation principle of Example 1 of the present application is: The design of the rotatable connection between the cutter head structure 2 and the mounting shell 4 allows the cutter head to rotate, and after the cutter head structure 2 rotates, it is fixed to the handle body 1 using the fixing structure 7, so that the cutter head points to the lesion location, thereby improving the accuracy and success rate of the operation.

[0047] By setting up the switching assembly 32, the rotating rod 31 can be fixed to the two second bevel gears 34 respectively. When the rotating rod 31 is fixed to the second bevel gear 34 with a larger tooth pitch, the first bevel gear 33 meshing therewith is subjected to a larger driving force, thereby realizing a large rotation of the cutter head structure 2, allowing the staff to quickly adjust the structure of the cutter head; when the rotating rod 31 is fixed to the second bevel gear 34 with a smaller tooth pitch, the first bevel gear 33 meshing therewith is subjected to a smaller driving force, thereby realizing a slight rotation of the cutter head structure 2; the doctor can fine-tune the cutter head during the operation to ensure the accuracy and safety of the operation.

[0048] The position and orientation of the blade head structure 2 can be adjusted more flexibly through large and small rotations to adapt to different surgical needs and patient conditions; this flexibility not only improves the accuracy of the surgery, but also reduces the risk of the surgery. Example 2

[0049] The embodiment of the present application discloses a plasma excitation device for an electrode.

[0050] Reference Figure 8 and Fig. 9 The difference between Example 2 of the present application and Example 1 is that: the switching component 32 includes a sliding ring 324, a connecting rod 325 and a movable rod 326, and the sliding ring 324 is sleeved on the outer wall of the rotating rod 31; in this embodiment, the plug-in block 5 includes two plug-in blocks 51, and the two plug-in blocks 51 are respectively fixed at the opposite ends of the sliding ring 324, and the plug-in blocks 51 are used to be plugged in and matched with the plug-in slot 342.

[0051] Reference Fig. 9 The inner wall of the sliding ring 324 is provided with a guide block 317, and the outer wall of the rotating rod 31 is provided with a guide groove 318 for the positioning block to slide; the cooperation between the positioning block and the guide groove 318 can prevent the sliding ring 324 and the rotating rod 31 from rotating relative to each other; An annular groove 327 is provided on the outer wall of the sliding ring 324, and one end of the connecting rod 325 is slidably installed in the annular groove 327, and the extension direction of the connecting rod 325 is perpendicular to the extension direction of the rotating rod 31; a switching hole 47 connected to the mounting groove 43 is provided on the outer wall of the mounting shell 4, and the movable rod 326 is inserted into the switching hole 47 and rotatably connected to the connecting rod 325; a first threaded portion 48 is provided on the outer wall of the movable rod 326, and a second threaded portion for matching with the first threaded portion 48 is provided on the inner wall of the switching hole 47.

[0052] Reference Figure 8In this embodiment, the outer wall of the movable rod 326 is sleeved with a fourth spring 328, and the two ends of the fourth spring 328 are respectively connected to the inner wall of the installation groove 43 and the connecting rod 325. The elastic force of the fourth spring 328 is used to drive the connecting rod 325 to move toward the side away from the fourth spring 328, so that the plug block 51 on one side of the sliding ring 324 is inserted into the insertion groove 342. By providing the fourth spring 328, when the first threaded portion 48 cancels the cooperation with the second threaded portion, the rotating rod 31 can be fixed to one of the second bevel gears 34; the number of rotations of the movable rod 326 can be reduced in the process of switching the rotating rod 31 to be fixed to the two sets of second bevel gears 34, and the switching efficiency can be further improved.

[0053] The outer wall of the movable rod 326 is sleeved with a rubber sleeve 35 . The rubber sleeve 35 can increase the friction between the hand of the staff and the outer wall of the movable rod 326 , so as to facilitate the rotation of the movable rod 326 .

[0054] The implementation principle of Example 2 of the present application is: By rotating the movable rod 326, due to the cooperation between the first threaded portion 48 and the second threaded portion, the rotation of the movable rod 326 will drive the connecting rod 325 and the sliding ring 324 to move on the outer wall of the rotating rod 31; so that the plug-in block 5 is disengaged from the plug-in groove 342 of one group of second bevel gears 34 and plugged into the plug-in groove 342 of another group of second bevel gears 34; thereby realizing the switching of the cutter head structure 2 from a large rotation to a small rotation; and the structure is simple, so that the staff can switch quickly.

[0055] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A plasma excitation device for an electrode, characterized in that: The invention comprises a tool handle body (1), a tool head structure (2) and a rotating structure (3), wherein a mounting shell (4) is mounted on one end of the tool handle body (1), the tool head structure (2) is rotatably connected to the mounting shell (4), and the mounting shell (4) is provided with a fixing structure (7) for fixing the tool head structure (2) and the mounting shell (4); the rotating structure (3) comprises a rotating rod (31), a switching assembly (32), two groups of first bevel gears (33) connected to the tool head structure (2), and two groups of second bevel gears (34) rotatably connected to the tool handle body (1), the two groups of the first bevel gears (33) are respectively meshed with the two groups of the second bevel gears (34), and the tooth pitches of the two groups of the first bevel gears (33) are different; The rotating rod (31) is rotatably mounted on the outer wall of the mounting housing (4); one set of second bevel gears (34) is provided with a movable hole (341); one end of the rotating rod (31) is inserted into the movable hole (341) and is rotatably connected to the other set of second bevel gears (34); a plug-in block (5) is slidably mounted on the outer wall of the rotating rod (31); the plug-in block (5) is located between the two sets of second bevel gears (34); a plurality of plug-in slots (342) for plugging the plug-in blocks (5) are provided on the side close to each other of the two sets of second bevel gears (34); the switching assembly (32) is used to drive the plug-in blocks (5) to be respectively plugged into the plug-in slots (342) of the two sets of second bevel gears (34).

2. A plasma excitation device for an electrode according to claim 1, characterized in that: The switching assembly (32) comprises a sliding block (321) and a first spring (322), wherein the elastic force of the first spring (322) is used to drive the plug-in block (5) to be plugged into a plug-in slot (342) of one of the second bevel gears (34), and the sliding block (321) is slidably mounted on the outer wall of the rotating rod (31) and connected to the plug-in block (5).

3. A plasma excitation device for an electrode according to claim 2, characterized in that: The switching components (32) are provided in multiple groups, and all positioning components are arranged at intervals along the outer peripheral wall of the rotating rod (31). The outer wall of the rotating rod (31) is sleeved with a connecting ring (323), and the connecting ring (323) is connected to all sliding blocks (321).

4. A plasma excitation device for an electrode according to claim 3, characterized in that: The outer wall of the rotating rod (31) is provided with a positioning groove (312), and a positioning rod (6) for contacting one side of the rotating ring is slidably installed in the positioning groove (312); when the positioning rod (6) contacts one side of the rotating ring, the plug-in block (5) is plugged into the plug-in groove (342) of another group of second bevel gears (34); a second spring (62) is provided between the positioning rod (6) and the inner wall of the positioning groove (312), and the elastic force of the second spring (62) is used to drive the positioning rod (6) to move toward a side away from the positioning groove (312).

5. A plasma excitation device for an electrode according to claim 4, characterized in that: The positioning rod (6) is provided with a guide surface (61) for guiding the positioning rod (6) to enter the positioning groove (312).

6. A plasma excitation device for an electrode according to claim 1, characterized in that: The switching assembly (32) comprises a sliding ring (324), a connecting rod (325) and a movable rod (326); the sliding ring (324) is sleeved on the outer wall of the rotating rod (31) and connected to the plug-in block (5); the inner wall of the sliding ring (324) is provided with a guide block (317); the outer wall of the rotating rod (31) is provided with a guide groove (318) for the guide block (317) to slide; the connecting rod (325) is mounted on the outer wall of the sliding ring (324), and the extension direction of the connecting rod (325) is perpendicular to the extension direction of the rotating rod (31); The outer wall of the mounting shell (4) is provided with a switching hole (47), and the movable rod (326) is inserted into the switching hole (47) and is rotatably connected to the connecting rod (325); the outer wall of the movable rod (326) is provided with a first threaded portion (48), and the inner wall of the switching hole (47) is provided with a second threaded portion for matching with the first threaded portion (48).

7. A plasma excitation device for an electrode according to claim 6, characterized in that: The outer wall of the movable rod (326) is sleeved with a rubber sleeve (35).

8. The plasma excitation device for an electrode according to claim 1, characterized in that: The fixing structure (7) comprises an annular airbag (71), a connecting airbag (72), a fixing block (73) and a third spring (74); the annular airbag (71) is sleeved on the outer wall of the rotating rod (31) and is located outside the mounting shell (4); the mounting shell (4) is provided with a mounting groove (43); the fixing block (73) is installed in the mounting groove (43) and is slidably installed on the outer wall of the rotating rod (31); and the sliding direction of the fixing block (73) is the same as the extension direction of the rotating rod (31); A plurality of fixing grooves (46) for inserting the fixing block (73) are provided on one side of the installation groove (43) close to the annular airbag (71), and the elastic force of the third spring (74) is used to drive the fixing block (73) to be inserted into the fixing groove (46) under normal conditions; the rotating rod (31) is provided with a connecting groove (314), the connecting airbag (72) is installed in the connecting groove (314) and connected to the fixing block (73), and the connecting airbag (72) is communicated with the annular airbag (71).

Images