Plasma electrode

Abstract

This utility model relates to the field of medical device technology and discloses a plasma electrode, including a housing, an electrode unit, a driving unit, and a locking unit. By setting a locking unit, the locking structure in the locking unit can limit the driving unit through friction, allowing the driving unit to drive the electrode unit in any bending direction and at any angle. The locking structure can limit the driving unit's position. Compared to related technologies where the teeth on a paddle can only limit the position of gears at a specific rotation angle, the locking structure in this embodiment has a wider range of locking the bending direction and angle of the electrode unit, and the operation is smoother. This achieves the technical effect of improving the positional accuracy between the electrode unit and the treatment site, preventing damage to normal tissue from changes in the electrode unit's position, and thus improving the accuracy and reliability of plasma electrode operation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to plasma electrodes. Background Technology

[0002] The principle of plasma ablation technology is to use electrical energy of a specific frequency to excite a medium such as physiological saline to generate plasma. High-speed charged particles break molecular bonds, achieving low-temperature ablation and cutting of tissues. It has advantages such as being minimally invasive, causing less bleeding, and minimizing thermal damage to surrounding tissues. Therefore, plasma ablation technology is widely used in departments such as otolaryngology, spinal surgery, gynecology, dermatology and venereology, and respiratory medicine. Taking respiratory medicine as an example, plasma ablation technology can be used to treat lesions within the trachea and bronchi, such as removing bronchial tumors, ablating benign bronchial stenosis, and stopping bronchial hemostasis, all of which provide effective intervention and treatment.

[0003] Currently, plasma ablation technology using plasma electrodes has a flexible distal end, allowing the distal end of the plasma electrode to treat only the lesion site and avoid damage to other normal tissues.

[0004] The prior art discloses a plasma electrode, including a handle, an outer sheath fixing sleeve, an outer sheath, a double-lumen tube, an electrode wire, a gear, and a push rod;

[0005] An outer sheath fixing sleeve is fixedly connected to the handle. The inside of the outer sheath fixing sleeve is used to fit the outer sheath. The distal end of the outer sheath is flexible. A double-lumen tube is fitted inside the outer sheath. An electrode wire is threaded through the distal end of the double-lumen tube. The electrode wire passes through the double-lumen tube and is fixed to two wire grooves on the gear.

[0006] The gear is rotatably connected to the handle via a shaft, and push rod is connected to the shaft so that external force can drive the push rod to rotate the gear, and further drive the movement of the electrode wire to achieve the bending of the outer sheath.

[0007] Furthermore, the plasma electrode includes a paddle, which is rotatably connected to the handle at its center. Both ends of the paddle have teeth that can engage with a gear. When it is necessary to fix the bending direction of the plasma electrode, the paddle is rotated so that the teeth on the paddle mesh with the gear, i.e., the teeth on the paddle are engaged with the gear, so that the gear stops rotating. This fixes the bending direction and degree of the distal end of the plasma electrode, preventing the plasma electrode from changing its angle under the drive of the contraction or relaxation of the trachea and bronchi, and from deviating from the lesion site, thus preventing the plasma electrode from damaging normal tissue.

[0008] However, during this process, there are instances where the gear rotates to engage with the teeth on the lever, but the gear and lever do not mesh properly. This instability in the gear-lever connection affects the precision of manipulation at the lesion site, limiting the plasma electrode's ability to be fixed at specific bending angles and degrees on the outer sheath. Therefore, there is an urgent need for a plasma electrode capable of reliably fixing various bending angles and degrees at the distal end of the electrode, thereby improving the precision of manipulation at the lesion site. Utility Model Content

[0009] In view of this, the present invention provides a plasma electrode to solve the problem that, during the use of existing plasma electrodes, the gear rotates to abut against the teeth on the lever, but the gear and the teeth on the lever do not mesh. In this case, the connection between the gear and the lever is unstable, which affects the operating accuracy of the lesion site.

[0010] This utility model provides a plasma electrode, comprising:

[0011] case;

[0012] An electrode unit, one end of which is connected to the housing, and the other end of which is used to perform treatment on the treatment site;

[0013] A driving unit, connected to the other end of the electrode unit, is used to drive the other end of the electrode unit to bend and adjust its bending direction and degree.

[0014] A locking unit is disposed on one side of the driving unit. The locking unit includes a locking structure. One end of the locking structure is disposed on one side of the driving unit. The other end of the locking structure has a first state in which it is connected to the driving unit to limit the driving unit by friction, thereby limiting the bending direction and degree of bending of the electrode unit. The other end of the locking structure has a second state in which it is separated from the driving unit.

[0015] Beneficial effects: By setting a locking unit, the locking structure in the locking unit can limit the driving unit through friction, so that the driving unit can drive the electrode unit in any bending direction and at any angle. The locking structure can limit the driving unit. Compared with the related technology where the teeth on the paddle can only limit the position of the gear at a specific rotation angle, the locking structure in this embodiment has a wider range of locking the bending direction and bending angle of the electrode unit. Moreover, it does not require the teeth on the paddle to mesh with the gear, making the operation smoother. This achieves the technical effect of improving the positional accuracy between the electrode unit and the treatment site, avoiding damage to normal tissue due to changes in the position of the electrode unit, and thus improving the technical effect of improving the accuracy and reliability of plasma electrode operation.

[0016] In one optional embodiment, an anti-slip layer is provided on the surface of the locking structure that contacts the driving unit, the anti-slip layer being used to connect with the driving unit by friction in the first state.

[0017] Beneficial effects: By setting an anti-slip layer, the friction between the locking structure and the drive unit can be increased. When the locking structure is in the first state, the reliability of fixing the position of the drive unit is improved, so that even if the drive unit is affected by external force, the position of the drive unit remains unchanged, thereby improving the reliability of the locking structure in limiting the drive unit.

[0018] In one optional embodiment, the anti-slip layer is a rubber layer;

[0019] And / or, the anti-slip layer is detachably connected to the locking structure.

[0020] Beneficial effects: By defining the anti-slip layer as a rubber layer, the high wear resistance and tear resistance of rubber can improve the reliability of plasma electrodes.

[0021] In one alternative implementation, the locking unit includes:

[0022] A moving structure is connected to the locking structure;

[0023] A first power structure is connected to the motion structure, and the first power structure is used to drive the motion structure to adjust the state of the locking structure.

[0024] Beneficial effects: In the initial state, the locking structure is in the first state, and the first power structure is used to drive the locking structure to move away from the driving direction, so as to adjust the state of the locking structure from the first state to the second state.

[0025] By setting up a motion structure and a first power structure, and connecting the motion structure with both the locking structure and the first power structure, the motion structure can be adjusted by external force to drive the first power structure to move. Specifically, the motion structure can drive the locking structure to move away from the driving unit, putting the locking structure in a second state, or drive the locking structure to move closer to the driving unit, putting the locking structure in a first state. This makes it easier for the driving unit to adjust the bending direction and degree of the electrode unit.

[0026] In one alternative embodiment, both the locking structure and the first power structure are slidably connected to the housing.

[0027] In one optional embodiment, the motion structure is provided with a first driving member, the first driving member is provided with a first contact surface, the first power structure is provided with a second contact surface, the second contact surface is in contact with the first contact surface, and when the first power structure is driven by an external force to slide relative to the housing, the second contact surface drives the first contact surface to move away from the driving unit, so that the locking structure is in the second state.

[0028] And / or, the first power structure is provided with a first limiting structure, and the locking unit includes:

[0029] The second limiting structure is disposed on the housing and cooperates with the first limiting structure to limit the sliding displacement of the first power structure.

[0030] Beneficial effects: The second contact surface on the first power structure drives the motion structure to move in a direction away from the drive unit through the first contact surface. The structure of the first contact surface and the second contact surface is simple, which can achieve the technical effect of improving the ease of driving the motion structure by the first power structure.

[0031] By cooperating with the first limiting structure, the second limiting structure slides only along the first limiting structure and has no tendency to move in other directions, which can limit the movement direction of the first power structure, thereby achieving the technical effect of improving the reliability of the movement direction of the first power structure.

[0032] In one alternative implementation, the locking unit includes:

[0033] A first elastic structure has one end connected to the moving structure and the other end connected to the shell. When the first elastic structure is in its natural state, the locking structure is in the first state.

[0034] And / or, a third elastic structure, one end of which is connected to the first power structure, and the other end of which is connected to the housing, wherein when the third elastic structure is in its natural state, the locking structure is in its first state.

[0035] Beneficial effects: By setting a first elastic structure, when the first elastic structure is in its natural state, the locking structure is in its first state, that is, in the initial state, the locking unit limits the driving unit. Based on this, the self-locking of the plasma electrode can be achieved, avoiding intraoperative misoperation that could affect the patient's health, thereby improving the technical effect of improving the reliability of the plasma electrode.

[0036] By setting a third elastic structure, which is in its natural state and the locking structure is in its first state, when the locking structure is adjusted from the first state to the second state, the third elastic structure undergoes elastic deformation. Then, pressing the second power structure drives the locking structure to adjust from the second state to the first state. During this process, the second power structure drives the fourth limiting structure to move away from the third limiting structure. The elastic force of the third elastic structure drives the first power structure to return to its original position, that is, the position that was not pressed in the natural state, thereby improving the reliability and efficiency of the first power structure's reset.

[0037] In one optional embodiment, the first power structure is provided with a third limiting structure, and the locking unit includes:

[0038] A fourth limiting structure is provided on the housing, which is used to cooperate with the third limiting structure when the locking structure is in the second state, so as to limit the position of the first power structure.

[0039] Beneficial effects: By setting the third and fourth limiting structures, when the first power structure drives the locking structure to the second state, the fourth limiting structure can cooperate with the third limiting structure to limit the position of the first power structure, thereby improving the reliability of the driving unit in adjusting the bending degree and bending angle of the locking structure, thus achieving the technical effect of improving the reliability of the plasma electrode.

[0040] In one optional embodiment, the third limiting structure is a limiting hole, and the fourth limiting structure is a limiting post.

[0041] In one alternative implementation, the locking unit includes:

[0042] The second elastic structure has one end connected to the fourth limiting structure and the other end connected to the shell. The initial state of the second elastic structure is a compressed state, which is used to drive the fourth limiting structure to always be in contact with the first power structure.

[0043] And / or, a second power structure is slidably connected to the housing, the second power structure is provided with a second driving member, the second driving member is connected to the fourth limiting structure, so that when the external force drives the second power structure to slide, the second driving member drives the fourth limiting structure to move away from the third limiting structure, so that the locking structure is adjusted from the second state to the first state under the elastic force of the first elastic structure.

[0044] Beneficial effects: By setting a second elastic structure and limiting the second elastic structure to a compressed state in the initial state, the fourth limiting structure is always in contact with the first driving structure. When the first power structure drives the third limiting structure to move to the position of the fourth limiting structure, the fourth limiting structure moves into the third limiting structure under the drive of the second elastic structure, thereby fixing the position of the first driving structure.

[0045] By setting a second power structure, when the locking structure needs to be adjusted from the second state to the first state, pressing the second power structure causes the second driving component on the second power structure to drive the fourth limiting structure to move in a direction away from the third limiting structure. Without the restriction of the third limiting structure, the locking structure is adjusted from the second state to the first state under the elastic force of the first elastic structure, and the first power structure returns to its original position.

[0046] In one alternative implementation, the locking unit includes:

[0047] The fourth elastic structure is connected at one end to the second power structure and at the other end to the housing. When the second power structure drives the locking structure to adjust from the second state to the first state, the fourth elastic structure drives the second power structure to return to its original position.

[0048] Beneficial effects: By setting a fourth elastic structure, when the second power structure is pressed to drive the locking structure to adjust from the second state to the first state, the fourth elastic structure undergoes elastic deformation during this process. The second power structure drives the fourth limiting structure to move away from the third limiting structure. After the second power structure is released, the elastic force of the fourth elastic structure drives the second power structure to return to its original position, that is, the position that was not pressed in its natural state. This improves the reliability and efficiency of the second power structure's reset. Attached Figure Description

[0049] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0050] Figure 1 This is a schematic diagram of the structure of the plasma electrode in this embodiment;

[0051] Figure 2 This is a schematic diagram of the locking unit in the first state according to this embodiment;

[0052] Figure 3 This is a schematic diagram of the locking unit in the second state in this embodiment.

[0053] Figure 4 This is a schematic diagram showing the positions of the first elastic structure, the second elastic structure, the third elastic structure, and the fourth elastic structure in the plasma electrode of this embodiment.

[0054] Explanation of reference numerals in the attached figures:

[0055] 1. Shell; 101. Receiving cavity;

[0056] 2. Electrode unit; 201. Distal end of the electrode; 202. Proximal end of the electrode;

[0057] 3. Drive unit; 301. Rotary structure; 302. Toothed structure; 303. Drive structure;

[0058] 304. Connecting structure; 3041. First connecting part; 3042. Second connecting part;

[0059] 4. Locking unit; 401. Locking structure;

[0060] 402. First power structure; 4021. Third limiting structure; 4022. Second contact surface; 4023. First limiting structure;

[0061] 403. First elastic structure; 404. First driving component; 405. First contact surface; 406. Second limiting structure; 407. Fourth limiting structure; 408. Second elastic structure;

[0062] 409. Second power structure; 4091. Fifth limiting structure;

[0063] 4010, Sixth limiting structure; 4011, Motion structure; 4012, Anti-slip layer; 4013, Third elastic structure; 4014, Fourth elastic structure. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0065] The following is combined Figures 1 to 4 The following describes embodiments of the present invention.

[0066] According to an embodiment of the present invention, a plasma electrode is provided, comprising:

[0067] Casing 1;

[0068] Electrode unit 2, one end of which is connected to housing 1, and the other end of electrode unit 2 is used to perform treatment operations on the treatment site;

[0069] The driving unit 3 is connected to the other end of the electrode unit 2 and is used to drive the other end of the electrode unit 2 to bend and adjust its bending direction and degree.

[0070] The locking unit 4 is located on one side of the driving unit 3. The locking unit 4 includes a locking structure 401. One end of the locking structure 401 is located on one side of the driving unit 3. The other end of the locking structure 401 has a first state of being connected to the driving unit 3 so as to limit the driving unit 3 by friction and limit the bending direction and degree of bending of the electrode unit 2. The other end of the locking structure 401 has a second state of being separated from the driving unit 3.

[0071] In the plasma electrode of this embodiment, by setting a locking unit 4, the locking structure 401 in the locking unit 4 can limit the driving unit 3 through friction, so that the driving unit 3 can drive the electrode unit 2 in any bending direction and at any angle. The locking structure 401 can limit the driving unit 3. Compared with the related technology, the teeth on the paddle can only limit the position of the gear at a specific rotation angle. The locking structure 401 in this embodiment has a wider range of locking the bending direction and bending angle of the electrode unit 2, and there is no need for the teeth on the paddle to mesh with the gear. The operation is smoother, thereby achieving the technical effect of improving the positional accuracy between the electrode unit 2 and the treatment site, avoiding damage to normal tissue due to changes in the position of the electrode unit 2, and thus achieving the technical effect of improving the operation accuracy and reliability of the plasma electrode.

[0072] In this embodiment, the plasma electrode is used in the respiratory medicine department, where the treatment site is bronchial tissue, such as polyps.

[0073] Of course, in other embodiments, the type of treatment site can be adjusted depending on the application scenario of the plasma electrode.

[0074] In addition, combined Figure 4 As shown, in this embodiment, an anti-slip layer 4012 is provided on the surface of the locking structure 401 that contacts the driving unit 3. The anti-slip layer 4012 is used to connect with the driving unit 3 by friction in the first state.

[0075] By setting the anti-slip layer 4012, the friction between the locking structure 401 and the drive unit 3 can be increased. When the locking structure 401 is in the first state, the reliability of fixing the position of the drive unit 3 is improved, so that even if the drive unit 3 is affected by external force, the position of the drive unit 3 remains unchanged, thereby improving the reliability of the locking structure 401 in limiting the drive unit 3.

[0076] In this embodiment, the anti-slip layer 4012 is disposed on the locking structure 401. As a possible implementation, the anti-slip layer 4012 may also be disposed on the driving unit 3, or both the locking structure 401 and the driving unit 3 may have the anti-slip layer 4012 disposed on them.

[0077] Preferably, the anti-slip layer 4012 is a rubber layer. Because rubber has high wear resistance and tear resistance, it can achieve the technical effect of improving the reliability of the plasma electrode.

[0078] As an alternative implementation, the plasma electrode may not have an anti-slip layer 4012, and the position of the driving unit 3 may be fixed by the locking structure 401 through the friction between the locking structure 401 and the driving unit 3.

[0079] Of course, in other embodiments, the type of anti-slip layer 4012 may be adjusted depending on the design of the plasma electrode.

[0080] Furthermore, in this embodiment, the anti-slip layer 4012 is detachably connected to the locking structure 401.

[0081] Mounting holes can be provided at both ends of the locking structure 401, and protrusions that cooperate with the mounting holes can be provided on the anti-slip layer 4012. The radial dimension of the protrusion is larger than the radial dimension of the mounting hole, so that the protrusion can be engaged in the mounting hole, thereby realizing a detachable connection between the anti-slip layer 4012 and the locking structure 401.

[0082] Of course, in other embodiments, depending on the design of the plasma electrode, the detachable connection between the anti-slip layer 4012 and the locking structure 401 can be adjusted, for example, the anti-slip layer 4012 can be sleeved on the locking structure 401. Alternatively, the connection between the anti-slip layer 4012 and the locking structure 401 can be adjusted, for example, the anti-slip layer 4012 and the locking structure 401 can be fixedly connected, and the specific method of fixed connection is not limited.

[0083] As an alternative implementation, it is also possible to limit the anti-slip layer 4012 to be a rubber layer, or to limit the anti-slip layer 4012 to be detachably connected to the locking structure 401.

[0084] In addition, combined Figures 2 to 4 As shown, in this embodiment, the locking unit 4 includes:

[0085] The moving structure 4011 is connected at one end to the locking structure 401; wherein, the moving structure 4011 can be a strip structure.

[0086] The first power structure 402 is connected to the motion structure 4011. The first power structure 402 is used to drive the motion structure 4011 to move in order to adjust the state of the locking structure 401.

[0087] In this embodiment, in the initial state, the locking structure 401 is in a first state, and the first power structure 402 is used to drive the locking structure 401 to move in a direction away from the driving unit 3, so as to adjust the state of the locking structure 401 from the first state to the second state.

[0088] By setting up a motion structure 4011 and a first power structure 402, with the motion structure 4011 connected to both the locking structure 401 and the first power structure 402, the motion structure 4011 can adjust the state of the locking structure 401. Specifically, the motion structure 4011 can drive the locking structure 401 to move in a direction away from the driving unit 3, placing the locking structure 401 in a second state, or it can drive the locking structure 401 to move in a direction closer to the driving unit 3, placing the locking structure 401 in a first state. This facilitates the driving unit 3 in adjusting the bending direction and degree of bending of the electrode unit 2.

[0089] Furthermore, combined Figures 2 to 4 As shown, in this embodiment, both the locking structure 401 and the moving structure 4011 are located below the driving unit 3. Therefore, when the user holds the housing 1, they can use their four fingers (excluding the thumb) as external force to drive the movement of the locking unit 4, thus achieving single-handed operation of the plasma electrode and improving the ease of use of the plasma electrode.

[0090] Furthermore, combining Figure 4 As shown, in this embodiment, the locking unit 4 includes:

[0091] The first elastic structure 403 is connected at one end to the motion structure 4011, and at the other end to the shell 1.

[0092] By setting the first elastic structure 403, when the first elastic structure 403 is in its natural state, the locking structure 401 is in its first state, that is, the initial state, where the locking unit 4 limits the driving unit 3. Based on this, the self-locking of the plasma electrode can be achieved, avoiding misoperation during surgery that could affect the patient's health, thereby improving the technical effect of improving the reliability of the plasma electrode.

[0093] Preferably, combined with Figure 4As shown, there are two first elastic structures 403, which can improve the connection points between the moving structure 4011 and the housing 1, thereby achieving the technical effect of improving the connection reliability between the moving structure 4011 and the housing 1.

[0094] Of course, in other embodiments, the number of the first elastic structure 403 may be adjusted depending on the design of the plasma electrode.

[0095] Alternatively, in an alternative implementation, the locking structure 401 may be in a second state in the initial state, and the first power structure 402 may be used to drive the locking structure 401 to move along the approach driving direction in order to adjust the state of the locking structure 401 from the second state to the first state.

[0096] In other embodiments, depending on the design of the plasma electrode, the locking unit 4 does not include the first elastic structure 403. In this case, both the locking structure 401 and the moving structure 4011 are located above the driving unit 3, so that the locking structure 401 limits the position of the driving unit 3 by friction through the gravity of the locking structure 401 and the moving structure 4011 in the initial state.

[0097] In other embodiments, the shape of the motion structure 4011 is adjusted depending on the design of the plasma electrode.

[0098] Furthermore, in this embodiment, the connection between the first power structure 402 and the motion structure 4011 is specifically that the first power structure 402 and the motion structure 4011 are fitted together.

[0099] In this embodiment, both the locking structure 401 and the first power structure 402 are slidably connected to the housing 1. That is, after pressing the first power structure 402, the sliding of the first power structure 402 drives the locking structure 401 to move away from the driving unit 3, so as to adjust the locking structure 401 to the second state.

[0100] Specifically, in combination Figures 2 to 4 As shown, the motion structure 4011 is provided with a first driving member 404, the first driving member 404 is provided with a first contact surface 405, and the first power structure 402 is provided with a second contact surface 4022. The second contact surface 4022 contacts the first contact surface 405. When the first power structure 402 is driven by an external force to slide relative to the housing 1, the second contact surface 4022 drives the first contact surface 405 to move away from the driving unit 3, so that the locking structure 401 is in the second state.

[0101] The second contact surface 4022 on the first power structure 402 drives the motion structure 4011 to move in a direction away from the drive unit 3 through the first contact surface 405. The first contact surface 405 and the second contact surface 4022 have simple structures, which can achieve the technical effect of improving the ease of driving the motion structure 4011 by the first power structure 402.

[0102] Among them, combined Figures 2 to 4 As shown, the first driving member 404 can be a driving groove, the bottom surface of the driving groove serves as the first contact surface 405, and the first contact surface 405 and the second contact surface 4022 are smooth inclined surfaces. The inclination direction of the second contact surface 4022 and the movement direction of the first power structure 402 are at an angle to each other, so as to realize that the first contact surface 405 drives the locking structure 401 to move in a direction away from the driving unit 3.

[0103] Of course, in other embodiments, the transmission method between the motion structure 4011 and the first power structure 402 can be adjusted according to the different designs of the plasma electrode. For example, the motion structure 4011 and the first power structure 402 are meshed, wherein both the motion structure 4011 and the first power structure 402 are racks, and two meshing first rotating gears and second rotating gears are provided on the housing 1. The sliding of the first power structure 402 drives the rotation of the first rotating gear, and the first rotating gear drives the transmission of the second rotating gear, and further drives the locking structure 401 to move in a direction away from the driving unit 3 through the motion structure 4011. This can also realize the adjustment of the locking structure 401 from the first state to the second state, and from the second state to the first state.

[0104] As an alternative implementation, the first driving member 404 is a protruding structure, with its bottom surface serving as the first contact surface 405 and the second contact surface 4022 also serving as the bottom surface of the protruding structure. This also allows the first power structure 402 to drive the moving structure 4011 away from the driving unit 3. Alternatively, the first power structure 402 can be pulled out by external force, i.e., the first power structure 402 moves towards... Figure 2 The right end of the first power structure 402 moves away from the drive unit 3, and the sliding drive locking structure 401 moves away from the drive unit 3 to adjust the locking structure 401 to the second state.

[0105] In other embodiments, depending on the design of the plasma electrode, the connection methods between the locking structure 401 and the housing 1, between the first power structure 402 and the moving structure 4011, and between the first power structure 402 and the housing 1 can be adjusted as needed. The locking structure 401 and the moving structure 4011 are detachably connected, for example, by a threaded connection. The locking structure 401 is threaded to the housing 1 through the moving structure 4011. For example, the moving structure 4011 is provided with a first threaded hole, one side of the housing 1 is provided with a sliding groove, and the other side of the housing 1 is provided with multiple second threaded holes. The first power structure 402 is a bolt. When it is necessary to adjust the state of the locking structure 401, the first power structure 402 is screwed outside the first threaded hole and the second threaded hole, and the locking structure 401 is manually driven to move to the required position. After determining the position of the locking structure 401, the first power structure 402 passes through the first threaded hole and the corresponding second threaded hole to fix the locking structure 401 to the housing 1 through the first power structure 402, thereby fixing the state of the locking structure 401.

[0106] In addition, combined Figures 2 to 4 As shown, in this embodiment, the first power structure 402 is provided with a first limiting structure 4023, and the locking unit 4 includes:

[0107] The second limiting structure 406 is disposed on the housing 1 and cooperates with the first limiting structure 4023 to limit the sliding displacement of the first power structure 402.

[0108] The first limiting structure 4023 is a first limiting groove whose extension direction is parallel to the sliding direction of the first power structure 402. The second limiting structure 406 is a rod-shaped structure. The inner diameter of the first limiting groove is equal to the outer diameter of the second limiting structure 406, so that the second limiting structure 406 slides only along the first limiting structure 4023 and has no tendency to move in other directions. This can limit the movement direction of the first power structure 402, thereby achieving the technical effect of improving the reliability of the movement direction of the first power structure 402.

[0109] Furthermore, by limiting the length of the first limiting structure 4023, the movement length of the first power structure 402 can be limited, preventing the first power structure 402 from displacing too much and separating from the housing 1, thereby achieving the technical effect of improving the reliability of the plasma electrode.

[0110] Alternatively, the first limiting structure 4023 can be a rod-shaped structure, and the second limiting structure 406 can be a first limiting groove, both of which are within the protection scope of this utility model.

[0111] Of course, in other embodiments, the specific structures of the first limiting structure 4023 and the second limiting structure 406 can be adjusted according to the different designs of the plasma electrode. For example, the first limiting structure 4023 and the second limiting structure 406 can be a sliding rail and slider structure. As long as the structure can limit the sliding position of the first power structure 402, it is within the protection scope of this utility model.

[0112] In other embodiments, depending on the design of the plasma electrode, it is only limited to the motion structure 4011 having a first driving member 404, the first driving member 404 having a first contact surface 405, and the first power structure 402 having a second contact surface 4022. The transmission between the first driving member 404 and the first power structure 402 is realized through the contact between the first contact surface 405 and the second contact surface 4022. Alternatively, it is only limited to the locking unit 4 having a first limiting structure 4023 and a second limiting structure 406. All of these are within the protection scope of this utility model.

[0113] In addition, combined Figures 2 to 4 As shown, in this embodiment, the first power structure 402 is provided with a third limiting structure 4021, and the locking unit 4 includes:

[0114] The fourth limiting structure 407 is provided on the housing 1 and is used to cooperate with the third limiting structure 4021 when the locking structure 401 is in the second state, so as to limit the position of the first power structure 402.

[0115] By setting the third limiting structure 4021 and the fourth limiting structure 407, when the first power structure 402 drives the locking structure 401 to be in the second state, the fourth limiting structure 407 can cooperate with the third limiting structure 4021 to limit the position of the first power structure 402, thereby improving the reliability of the driving unit 3 in adjusting the bending degree and bending angle of the locking structure 401, and thus achieving the technical effect of improving the reliability of the plasma electrode.

[0116] Among them, combined Figures 2 to 4 As shown, the third limiting structure 4021 is a limiting hole, and the fourth limiting structure 407 is a limiting post.

[0117] Specifically, in combination Figure 2As shown, in this embodiment, the third limiting structure 4021 is located at the bottom of the first power structure 402, and the fourth limiting structure 407 is located below the first power structure 402. At this time, the locking unit 4 includes a second elastic structure 408. One end of the second elastic structure 408 is connected to the fourth limiting structure 407, and the other end of the second elastic structure 408 is connected to the housing 1. The initial state of the second elastic structure 408 is a compressed state, used to drive the fourth limiting structure 407 to always be in contact with the first power structure 402.

[0118] By setting the second elastic structure 408 and limiting the second elastic structure 408 to a compressed state in the initial state, the fourth limiting structure 407 is always in contact with the first driving structure 303. When the first power structure 402 drives the third limiting structure 4021 to the position of the fourth limiting structure 407, the fourth limiting structure 407 moves into the third limiting structure 4021 under the drive of the second elastic structure 408, thereby fixing the position of the first driving structure 303.

[0119] Of course, in other embodiments, depending on the design of the plasma electrode, the locking unit 4 may not include the second elastic structure 408. In this case, the third limiting structure 4021 may be located above the first driving structure 303, and the fourth limiting structure 407 may be located above the first driving structure 303, so that the fourth limiting structure 407 is always in contact with the first driving structure 303 by the gravity of the fourth limiting structure 407.

[0120] Alternatively, the third limiting structure 4021 can be a limiting post, and the fourth limiting structure 407 can be a limiting hole.

[0121] Of course, in other embodiments, the specific structures of the third limiting structure 4021 and the fourth limiting structure 407 can be adjusted according to the different designs of the plasma electrode. For example, the third limiting structure 4021 may have multiple threaded holes and be provided on the end face of the housing 1, while the fourth limiting structure 407 may be a screw and have threaded holes provided on the first power structure 402. When the locking structure 401 is in the second state, the first power structure 402 is fixed by being threadedly connected to the threaded holes of the fourth limiting structure 407, the third limiting structure 4021, and the first power structure 402.

[0122] In addition, combined Figures 2 to 4 As shown, in this embodiment, the locking unit 4 includes:

[0123] The second power structure 409 is slidably connected to the housing 1. The second power structure 409 is provided with a second driving member. The second driving member is connected to the fourth limiting structure 407 so that when the external force drives the second power structure 409 to slide, the second driving member drives the fourth limiting structure 407 to move away from the third limiting structure 4021, so that the locking structure 401 is adjusted from the second state to the first state under the elastic force of the first elastic structure 403.

[0124] In this embodiment, an external force presses down on the second power structure 409, enabling the second driving member to drive the fourth limiting structure 407 to move away from the third limiting structure 4021. Alternatively, an external force can be used to pull out the second power structure 409, allowing it to drive the fourth limiting structure 407 to move away from the third limiting structure 4021.

[0125] By setting the second power structure 409, when the locking structure 401 needs to be adjusted from the second state to the first state, pressing the second power structure 409 causes the second driving member on the second power structure 409 to drive the fourth limiting structure 407 to move in a direction away from the third limiting structure 4021. At this time, without the restriction of the third limiting structure 4021, the locking structure 401 is adjusted from the second state to the first state under the elastic force of the first elastic structure 403, and the first power structure 402 returns to its original position.

[0126] Furthermore, in this embodiment, the second power structure 409 is provided with a fifth limiting structure 4091, and the locking unit 4 includes:

[0127] The sixth limiting structure 4010 is provided on the housing 1 and cooperates with the fifth limiting structure 4091 to limit the sliding displacement of the second power structure 409.

[0128] Among them, the fifth limiting structure 4091 is a second limiting groove whose extension direction is parallel to the sliding direction of the second power structure 409, and the sixth limiting structure 4010 is a rod-shaped structure. The inner diameter of the second limiting groove is equal to the outer diameter of the sixth limiting structure 4010, so that the sixth limiting structure 4010 slides only along the fifth limiting structure 4091 and has no tendency to move in other directions. This can limit the movement direction of the second power structure 409, thereby achieving the technical effect of improving the movement reliability of the second power structure 409.

[0129] Furthermore, by limiting the length of the fifth limiting structure 4091, the movement length of the second power structure 409 can be limited, preventing the second power structure 409 from displacing too much and separating from the shell 1, thereby achieving the technical effect of improving the reliability of the plasma electrode movement.

[0130] Alternatively, the fifth limiting structure 4091 can be a rod-shaped structure, and the sixth limiting structure 4010 can be a second limiting groove, both of which are within the protection scope of this utility model.

[0131] Of course, in other embodiments, the specific structures of the fifth limiting structure 4091 and the sixth limiting structure 4010 can be adjusted according to the different designs of the plasma electrode. For example, the fifth limiting structure 4091 and the sixth limiting structure 4010 can be sliding rail and slider structures. As long as the structure can limit the sliding position of the second power structure 409, it is within the protection scope of this utility model.

[0132] In other embodiments, depending on the design of the plasma electrode, the locking unit 4 may be limited to include the second elastic structure 408, or the locking unit 4 may be limited to include the second power structure 409, both of which are within the protection scope of this utility model.

[0133] In addition, combined Figure 4 As shown, in this embodiment, the locking unit 4 includes:

[0134] The third elastic structure 4013 is connected to the first power structure 402 at one end and to the housing 1 at the other end. When the third elastic structure 4013 is in its natural state, the locking structure 401 is in its first state.

[0135] The fourth elastic structure 4014 is connected at one end to the second power structure 409 and at the other end to the housing 1. The fourth elastic structure 4014 is used to drive the second power structure 409 to return to its original position when the second power structure 409 drives the locking structure 401 to adjust from the second state to the first state.

[0136] By setting a third elastic structure 4013 and a fourth elastic structure 4014, the third elastic structure 4013 is in its natural state, and the locking structure 401 is in its first state. When the locking structure 401 is adjusted from the first state to the second state, the third elastic structure 4013 undergoes elastic deformation. Then, pressing the second power structure 409 drives the locking structure 401 to adjust from the second state to the first state. During this process, the fourth elastic structure 4014 undergoes elastic deformation, and the second power structure 409 drives the fourth limiting structure 407 to move away from the third limiting structure 4021. The elastic force of the third elastic structure 4013 drives the first power structure 402 to return to its original position, that is, the position that was not pressed in the natural state. After releasing the second power structure 409, the elastic force of the fourth elastic structure 4014 drives the second power structure 409 to return to its original position, that is, the position that was not pressed in the natural state. This improves the reliability and efficiency of the reset of the first power structure 402 and the second power structure 409.

[0137] Preferably, the first elastic structure 403, the second elastic structure 408, the third elastic structure 4013 and the fourth elastic structure 4014 are all springs.

[0138] Of course, in other embodiments, the specific types of the first elastic structure 403, the second elastic structure 408, the third elastic structure 4013, and the fourth elastic structure 4014 may be adjusted depending on the design of the plasma electrode.

[0139] As an alternative implementation, the locking unit 4 may not include the third elastic structure 4013 and the fourth elastic structure 4014.

[0140] In other embodiments, depending on the design of the plasma electrode, the locking unit 4 may be limited to include a first elastic structure 403 or a third elastic structure 4013, both of which are within the protection scope of this utility model.

[0141] In addition, combined Figures 2 to 4 As shown, in this embodiment, the driving unit 3 includes:

[0142] The rotating structure 301 is rotatably connected to the housing 1, and the rotation of the rotating structure 301 is driven by an external force.

[0143] The connecting structure 304 includes at least a first connecting part 3041 and a second connecting part 3042. One end of the first connecting part 3041 and the second connecting part 3042 are connected to the rotating structure 301, and the other end of the first connecting part 3041 and the second connecting part 3042 are connected to the electrode unit 2, for driving the bending of the electrode unit 2 by the rotation of the rotating structure 301.

[0144] In this embodiment, the rotating structure 301 is a rotating wheel, and the rotating structure 301 is rotatably connected to the housing 1 via a rotating shaft. The first connecting part 3041 and the second connecting part 3042 are both connecting lines.

[0145] Among them, combined Figure 4 As shown, the rotating structure 301 has a first groove and a second groove. The first groove is located on the end face of the rotating structure 301 near the top, and the second groove is located on the end face of the rotating structure 301 near the bottom. One end of the first connecting part 3041 is connected to the distal end of the electrode unit 2, and the other end of the first connecting part 3041 is connected to the first groove. One end of the second connecting part 3042 is connected to the distal end of the electrode unit 2, and the other end of the second connecting part 3042 is connected to the second groove. The proximal end of the electrode unit 2 is connected to the housing 1. Specifically, the distal end refers to the end away from the user when the plasma electrode is placed in the patient's body, and the proximal end refers to the end close to the user when the plasma electrode is placed in the patient's body.

[0146] Specifically, in combination Figure 2 As shown, when the rotating structure 301 rotates clockwise, the electrode unit 2 bends downwards, and when the rotating structure 301 rotates counterclockwise, the electrode unit 2 bends upwards.

[0147] Preferably, in this embodiment, the outer circumference of the rotating structure 301 is provided with a toothed structure 302. Based on this, the toothed structure 302 can be embedded in the anti-slip layer 4012, increasing the friction between the rotating structure 301 and the anti-slip layer 4012, thereby achieving the technical effect of improving the reliability of the anti-slip layer 4012 in limiting the position of the rotating structure 301.

[0148] Furthermore, combined Figures 2 to 4 As shown, in this embodiment, the locking structure 401 is semi-circular, that is, the shape of the locking structure 401 is adapted to the shape of the rotating structure 301, so as to achieve a close fit between the locking structure 401 and the rotating structure 301, so that the position of the rotating structure 301 is limited by the friction between the locking structure 401 and the rotating structure 301.

[0149] Furthermore, combining Figures 2 to 4 As shown, in this embodiment, the driving unit 3 includes:

[0150] The drive structure 303 is connected to the rotating structure 301 and is used to make the drive structure 303 rotate by external force.

[0151] The drive structure 303 is U-shaped, with both ends of the U-shaped opening fitted onto the housing 1 and then onto the rotating shaft. Specifically, the drive structure 303 has mounting holes, which connect and fix the drive structure 303 to the rotating shaft, allowing the user to rotate the rotating shaft and the rotating structure 301 by rotating the drive structure 303. Figure 3 As shown, rotating upwards can drive rotating structure 301 to rotate clockwise, causing electrode unit 2 to bend downwards, and driving structure 303 along... Figure 3 As shown, rotating downwards can drive the rotating structure 301 to rotate counterclockwise, causing the electrode unit 2 to bend upwards.

[0152] Of course, in other embodiments, depending on the design of the plasma electrode, the shape of the rotating structure 301 and the specific types of the first connecting part 3041 and the second connecting part 3042 can be adjusted. For example, the rotating structure 301 can be irregularly shaped, and the first connecting part 3041 and the second connecting part 3042 can be current-carrying wires, so that the first connecting part 3041 and the second connecting part 3042 can both drive the rotating structure 301 to rotate and energize the electrode unit 2.

[0153] Alternatively, the toothed structure 302 may not be provided on the outer circumference of the rotating structure 301, and the position of the rotating structure 301 may be fixed by the friction between the anti-slip layer 4012 and the rotating structure 301.

[0154] In other embodiments, the number of connecting structures 304, their positions on the rotating structure 301, and their connection methods can be adjusted according to the different designs of the plasma electrodes and the different bending directions required for the electrode unit 2. For example, the connecting structures 304 can be fixed to the rotating structure 301 by adhesive bonding. All of these are within the protection scope of this utility model.

[0155] In other embodiments, the shape of the driving structure 303 can be adjusted according to the different designs of the plasma electrode. For example, the driving structure 303 can be connected to one side of the rotating shaft, which can also drive the rotation of the rotating shaft. Alternatively, the shapes of the rotating structure 301 and the locking structure 401 can be adjusted, as long as the shape of the locking structure 401 can fit against the rotating structure 301, all of which are within the protection scope of this utility model.

[0156] In addition, in this embodiment, the electrode unit 2 includes a fixing sleeve, a stainless steel tube, and an excitation unit. The fixing sleeve has a first channel to place the stainless steel tube inside the first channel. The proximal end of the stainless steel tube is connected to the housing 1, and the distal end of the stainless steel tube has a bent portion. Specifically, the bent portion can be processed into a snake-bone structure at the distal end of the stainless steel tube to achieve bending at the distal end of the stainless steel tube.

[0157] Furthermore, a second channel is provided inside the stainless steel tube, which is used to house the first connecting part 3041 and the second connecting part 3042. The proximal end of the bent part is connected to both the first connecting part 3041 and the second connecting part 3042 to drive the bent part to adjust the bending direction and degree of bending at the distal end of the stainless steel tube. The distal end of the bent part is also provided with an excitation unit, which is electrically connected to a power source to generate a plasma field to serve as a discharge tip for treating the treatment site. For example, the excitation unit can be a combination of a tungsten carbide sheet and a ceramic head, which is a mature technology and will not be further limited. Meanwhile, the electrode unit 2 is also a mature technology and will not be described in detail here.

[0158] Furthermore, in this embodiment, the housing 1 includes a receiving cavity 101, in which the rotating structure 301, the connecting structure 304, the rotating shaft, and the partial locking unit 4 are all disposed, which can achieve the technical effect of improving the protection of the rotating structure 301, the connecting structure 304, the rotating shaft, and the partial locking unit 4.

[0159] As a possible implementation, the housing 1 may not have a receiving cavity 101, and both the driving unit 3 and the locking unit 4 may be disposed on the surface of the housing 1. Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A plasma electrode, characterized by, include: Shell (1); The electrode unit (2) is connected at one end to the housing (1), and the other end of the electrode unit (2) is used to perform treatment on the treatment site. The driving unit (3) is connected to the other end of the electrode unit (2) and is used to drive the other end of the electrode unit (2) to bend and adjust its bending direction and degree. A locking unit (4) is provided on one side of the driving unit (3). The locking unit (4) includes a locking structure (401). One end of the locking structure (401) is provided on one side of the driving unit (3). The other end of the locking structure (401) has a first state of being connected to the driving unit (3) to limit the driving unit (3) by friction, thereby limiting the bending direction and degree of bending of the electrode unit (2). The other end of the locking structure (401) has a second state of being separated from the driving unit (3).

2. The plasma electrode of claim 1, wherein The locking structure (401) has an anti-slip layer (4012) on the surface that contacts the driving unit (3). The anti-slip layer (4012) is used to connect with the driving unit (3) by friction in the first state.

3. The plasma electrode of claim 2, wherein, The anti-slip layer (4012) is a rubber layer; And / or, the anti-slip layer (4012) is detachably connected to the locking structure (401).

4. The plasma electrode according to any one of claims 1 to 3, characterized in that The locking unit (4) includes: The motion structure (4011) is connected to the locking structure (401); A first power structure (402) is connected to the motion structure (4011). The first power structure (402) is used to drive the motion structure (4011) to move in order to adjust the state of the locking structure (401).

5. The plasma electrode of claim 4, wherein, The locking structure (401) and the first power structure (402) are both slidably connected to the housing (1).

6. The plasma electrode of claim 5, wherein, The motion structure (4011) is provided with a first driving member (404), the first driving member (404) is provided with a first contact surface (405), the first power structure (402) is provided with a second contact surface (4022), the second contact surface (4022) is in contact with the first contact surface (405), and is used to drive the first power structure (402) to slide relative to the housing (1) by external force, the second contact surface (4022) drives the first contact surface (405) to move away from the driving unit (3) so that the locking structure (401) is in the second state; And / or, the first power structure (402) is provided with a first limiting structure (4023), and the locking unit (4) includes: The second limiting structure (406) is disposed on the housing (1) and cooperates with the first limiting structure (4023) to limit the sliding displacement of the first power structure (402).

7. The plasma electrode of claim 4, wherein, The locking unit (4) includes: The first elastic structure (403) is connected at one end to the motion structure (4011) and at the other end to the housing (1). When the first elastic structure (403) is in its natural state, the locking structure (401) is in the first state. And / or, a third elastic structure (4013) is connected at one end to the first power structure (402), and the other end of the third elastic structure (4013) is connected to the housing (1). When the third elastic structure (4013) is in its natural state, the locking structure (401) is in its first state.

8. The plasma electrode of claim 7, wherein, The first power structure (402) is provided with a third limiting structure (4021), and the locking unit (4) includes: A fourth limiting structure (407) is provided on the housing (1) and is used to cooperate with the third limiting structure (4021) when the locking structure (401) is in the second state, so as to limit the position of the first power structure (402).

9. The plasma electrode of claim 8, wherein, The third limiting structure (4021) is a limiting hole, and the fourth limiting structure (407) is a limiting post.

10. The plasma electrode of claim 8, wherein, The locking unit (4) includes: The second elastic structure (408) is connected at one end to the fourth limiting structure (407) and at the other end to the housing (1). The initial state of the second elastic structure (408) is a compressed state, which is used to drive the fourth limiting structure (407) to always be in contact with the first power structure (402). And / or, a second power structure (409) is slidably connected to the housing (1). The second power structure (409) is provided with a second driving member. The second driving member is connected to the fourth limiting structure (407). When the second power structure (409) is slid by an external force, the second driving member drives the fourth limiting structure (407) to move away from the third limiting structure (4021). This causes the locking structure (401) to be adjusted from the second state to the first state under the elastic force of the first elastic structure (403).

11. The plasma electrode of claim 10, wherein, The locking unit (4) includes: The fourth elastic structure (4014) is connected at one end to the second power structure (409) and at the other end to the housing (1). The fourth elastic structure (4014) is used to drive the second power structure (409) to return to its original position when the second power structure (409) drives the locking structure (401) to adjust from the second state to the first state.

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