Radio frequency plasma surgical electrode
By designing a damping adjustment mechanism and a double-layer blade structure for the radiofrequency plasma surgical electrode, the problem of difficult operation of traditional electrodes in complex anatomical structures has been solved, achieving flexible adjustment and stability of the electrode head, and improving the safety and precision of the surgery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU BONSS MEDICAL TECH
- Filing Date
- 2025-05-28
- Publication Date
- 2026-06-02
AI Technical Summary
Existing low-temperature plasma surgical electrodes cannot achieve ideal surgical contact and operation in complex anatomical structures and hard-to-reach areas, especially when they are blocked by key physiological structures or bones, making it difficult for traditional electrodes to meet treatment needs.
A radiofrequency plasma surgical electrode was designed, which uses a damping adjustment mechanism connected to a bending component via a traction wire to achieve multi-angle dynamic adjustment of the distal blade tip. Combined with a double-layer blade structure and insulation design, the stability and flexibility of the electrode tip are ensured.
It achieves precise bending control of the electrode tip, adapting to the surgical needs of complex cavity environments and restricted areas, and improving the safety and stability of the surgery.
Smart Images
Figure CN224307399U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of minimally invasive surgical instruments, specifically to a radio frequency plasma surgical electrode. Background Technology
[0002] Low-temperature plasma surgical systems have been widely used abroad in recent years for the treatment of diseases in otolaryngology, spinal surgery, gynecology, and proctology. The surgical temperature can be precisely controlled within the range of 40-70℃, offering advantages such as high safety, short operation time, minimal trauma, and short postoperative recovery time. The basic principle of the plasma surgical system is that plasma energy flows between the working electrode and the return electrode, forming a highly concentrated plasma vapor sheath around the electrodes through the conductivity of saline solution. This plasma sheath consists of a large number of charged particles. Accelerated by an electric field, these charged particles generate sufficient energy and possess strong oxidizing properties. At low temperatures (40℃-70℃), they break the molecular bonds that make up the target tissue cells, causing the tissue to rapidly decompose into low-molecular-weight molecules and atoms. This results in real-time, highly efficient tissue cutting and ablation at relatively low temperatures.
[0003] While low-temperature plasma technology has brought unprecedented surgical precision and safety, existing technologies still face several limitations in the face of complex anatomical structures. In particular, for surgical areas that are obscured by key physiological structures or bones, or those with special orientations or that are difficult to access, traditional plasma surgical electrodes often fail to achieve ideal surgical contact and manipulation, thus limiting the effective implementation of treatment. Utility Model Content
[0004] To address the aforementioned technical problems, this invention provides a radiofrequency plasma surgical electrode.
[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A radiofrequency plasma surgical electrode, comprising:
[0006] The proximal handle, the distal cutter head, the cutter bar connecting the proximal handle and the distal cutter head, and the cable connector, which is connected to the wire inside the proximal handle;
[0007] The proximal handle is equipped with a damping adjustment mechanism, which is connected to the bending part of the distal cutter head through at least one traction wire, and the other end is fixed to the wire harness hole of the wire harness tray.
[0008] The displacement of the traction line is controlled by a damping adjustment mechanism to drive the bending section and achieve multi-angle dynamic adjustment of the distal blade during surgery.
[0009] Furthermore, the damping adjustment mechanism includes a wrench, a damping stop, and a cable tray. The damping stop is set on the cable tray, and the damping stop enables graded adjustment. The cable tray is connected to the wrench, and a cable tray hole is provided on the cable tray. One end of the traction cable is connected to the bending part of the distal cutter head, and the other end is fixed in the cable tray hole.
[0010] Furthermore, the damping adjustment mechanism also includes fasteners that connect to the cable tray, which use screws to confine the cable tray within the handle housing.
[0011] Furthermore, there are two traction lines, symmetrically distributed on both sides inside the tool holder, which control the up and down bending of the bent part through synchronous or differential traction.
[0012] Furthermore, the tool holder has a double-layer structure, including an inner tool holder and an outer tool holder. The front end of the inner tool holder is fixedly connected to the bent part, and the outer tool holder is sleeved on the outside of the inner tool holder. An insulating layer is provided between the inner tool holder and the outer tool holder.
[0013] Furthermore, the distal cutter head includes a bent component and an electrode head disposed at the front end of the bent component, and the rear end of the bent component is disposed on the cutter shank.
[0014] Furthermore, the electrode head includes symmetrically arranged positive and negative electrodes, which are fixed to the electrode seat by a locking member. The wire passes through the cutter bar and is electrically connected to the positive and negative electrodes of the distal cutter head for transmitting radio frequency energy.
[0015] Furthermore, the rear end of the electrode holder is fixedly connected to the inner tool bar, including a front isolation plate and a rear hollow column. The locking component includes a sleeve ring and a snap-fit post. The snap-fit post is adapted to the limiting groove of the electrode holder, placing the positive electrode and the negative electrode limit on both sides of the electrode holder.
[0016] Furthermore, both the positive and negative electrodes include a semi-cylindrical working head at the front end, a centrally protruding limiting block, and a terminal block at the rear end. The working heads of the positive and negative electrodes are located on the left and right sides of the isolation plate of the electrode holder, respectively. The terminal block at the rear end passes through the limiting groove of the electrode holder and is connected to the wire passing through the tool bar.
[0017] The present invention has the following beneficial effects: The radiofrequency plasma surgical electrode provided by the present invention allows for precise control of the bending angle of the electrode head by operating the wrench on the handle and by pulling the bending component through the damping barrier and traction line. This ensures that the electrode head can be freely adjusted according to surgical needs, and is especially suitable for complex cavity environments and restricted surgical directions and areas. It helps to achieve ideal surgical wound contact and operation. Furthermore, the working electrode is secured to the bending component by the electrode seat and locking component, making the entire electrode head less likely to loosen and fall off, thus improving the stability of the electrode and the safety of the surgery. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the internal structure of the proximal handle in this utility model;
[0020] Figure 3 This is a schematic diagram of the distal end cutter head structure of this utility model;
[0021] Figure 4 This is a schematic diagram of the electrode head structure in this utility model;
[0022] Figure 5 This is a half-sectional view of the electrode head in this utility model;
[0023] Figure 6 This is a schematic diagram of the electrode holder structure in this utility model;
[0024] Figure 7 This is a schematic diagram of the locking component structure in this utility model;
[0025] Figure 8 This is a schematic diagram of the positive or negative electrode structure in this utility model;
[0026] Figures 1 to 8 The reference numerals in the attached figures are as follows: 1-proximal handle, 2-distal cutter head, 3-cutter bar, 4-cable connector, 5-wire, 6-traction wire, 10-cable bundle reel, 11-cable bundle hole, 12-wrench, 13-damping stop, 14-fastener, 15-cutter bar connector, 20-bending component, 21-electrode head, 22-electrode seat, 23-locking component, 30-inner cutter bar, 31-outer cutter bar, 210-positive electrode, 211-negative electrode, 220-isolation plate, 221-hollowed-out column, 230-sleeve ring, 231-clamping post, 222-limiting groove, 223-mounting cavity, 2101-working head, 2102-limiting block, 2103-terminal. Detailed Implementation
[0027] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0028] like Figures 1 to 2As shown, a radiofrequency plasma surgical electrode includes a proximal handle 1, a distal blade 2, a blade shank 3 connecting the proximal handle 1 and the distal blade 2, and a cable connector 4. The cable connector 4 is connected to a wire 5 inside the proximal handle 1. The surgeon controls the movement of the distal blade 2 using operating components on the handle, such as a wrench 12 and a knob. The handle shell is made of insulating material such as engineering plastic to prevent current leakage during operation. The distal blade 2 contains symmetrically distributed positive and negative electrodes 211. Radiofrequency energy excites saline solution to form a plasma vapor sheath, achieving low-temperature tissue cutting or ablation. The blade shank 3 connects the proximal handle 1 and the distal blade 2, providing rigid or flexible support. The internal wire 5 transmits radiofrequency energy from the cable connector 4 to the electrodes of the distal blade 2. The cable connector 4 is connected to the main unit's radiofrequency energy generator via the wire 5, transmitting the radiofrequency energy required for the surgery.
[0029] The proximal handle 1 is equipped with a damping adjustment mechanism, which is connected to the bending member 20 of the distal blade head 2 via at least one traction wire 6. The other end of the traction wire 6 is fixed to the suture hole 11 of the suture tray 10. The displacement of the traction wire 6 is controlled by the damping adjustment mechanism to drive the bending member 20 to achieve multi-angle dynamic adjustment of the distal blade head 2 during surgery. The end of the blade shaft is placed inside the proximal handle and is fixed by the blade shaft connector 15 and fastener 14. The distal blade head is fixedly connected to the front end of the blade shaft.
[0030] In this embodiment, to enhance the flexibility and precision of operation, the damping adjustment mechanism includes a wrench 12, a damping stop 13, and a cable tray 10. The damping stop 13 is mounted on the cable tray 10 and integrated with it. Through mechanical structures such as ratchet, locking teeth, or elastic limit plates, the rotation of the cable tray 10 is divided into fixed positions (e.g., every 10°). The damping stop 13 enables graded adjustment. The cable tray 10 and the wrench 12 are connected by screws, converting the rotational motion of the wrench 12 into the rotation of the cable tray 10, thereby controlling the displacement of the traction cable 6. The cable tray 10 has a cable tray hole 11. One end of the traction cable 6 is connected to the bending part 20 of the distal cutter head 2, and the other end is fixed in the cable tray hole 11 of the cable tray 10. By rotating the cable tray 10 to wind or release the traction cable 6, the displacement of the traction cable 6 can be precisely adjusted. The cable tray 10 cooperates with the damping stop 13 to limit the rotation range of the cable tray 10 and ensure the accuracy of the gear adjustment.
[0031] Preferably, there are two traction lines 6, symmetrically distributed on both sides inside the blade shank 3, which control the up-and-down bending of the bending element 20 through synchronous or differential traction. The two traction lines 6 control the up-and-down bending of the blade head respectively, supporting differential adjustment, ensuring that the distal blade head 2 can be freely adjusted according to surgical needs, especially suitable for complex cavity environments and restricted surgical directions and areas, which helps to achieve ideal surgical wound contact and operation. The bending element 20, like a snake bone tube, is composed of multiple hinged units or elastic materials, and bends under the traction of the traction lines 6, balancing flexibility and rigidity, ensuring that it will not deform unexpectedly due to tissue resistance during surgery.
[0032] In addition, the damping adjustment mechanism also includes fasteners connected to the cable tray 10. The fasteners limit the cable tray 10 to be inside the handle housing by screws. The end of the cutter bar 3 is placed inside the proximal handle 1 and is fixed by the cutter bar 3 connector and fastener screws or bolts. The distal cutter head 2 is fixedly connected to the front end of the cutter bar 3.
[0033] The tool holder 3 has a double-layer structure, including an inner tool holder 30 and an outer tool holder 31. The front end of the inner tool holder 30 is fixedly connected to the bending member 20, and the outer tool holder 31 is sleeved on the outside of the inner tool holder 30. An insulating layer is provided between the inner tool holder 30 and the outer tool holder 31. This tool holder 3 not only enhances mechanical strength but also ensures operational safety and stability through the design of the inner insulating layer of the inner tool holder 30 and the outer insulating layer of the outer tool holder 31. The traction line 6 passes through the inner tool holder 30 to the front end of the bending member 20 and is fixedly connected to the bending member 20 by welding, bonding, or other means.
[0034] like Figure 3 As shown, in this embodiment, the distal cutter head 2 includes a bending member 20 and an electrode head 21 disposed at the front end of the bending member 20. The rear end of the bending member 20 is disposed on the cutter bar 3. An outer cutter bar 31 is disposed on the inner cutter bar 30. The front end of the inner cutter bar 30 and the corresponding section of the bending member 20 are flexible tubes with certain strength and toughness, such as Teflon tubes.
[0035] like Figures 4 to 5 As shown, in this embodiment, the electrode head 21 includes a symmetrically arranged positive electrode 210 and a negative electrode 211, which are fixed to the electrode base 22 by locking bolts or screws. The wire 5 passes through the cutter bar 3 and is electrically connected to the positive electrode 210 and the negative electrode 211 of the distal cutter head 2 for transmitting radio frequency energy. The electrode base 22 and the locking device are both fixedly sleeved or bonded to the front end of the bent part 20, and both are made of insulating material, such as ceramic material.
[0036] like Figures 6 to 8As shown, the rear end of the electrode holder 22 is fixedly connected to the inner blade 30. The electrode holder 22 includes a long strip-shaped isolation plate 220 at the front end and a hollow column 221 at the rear end. The column has a staggered mounting cavity 223 and a limiting groove 222 on both sides. The locking component includes a sleeve ring 230 and a locking post 231. The locking post 231 is adapted to the limiting groove 222 of the electrode holder 22, limiting the positive electrode 210 and the negative electrode 211 to both sides of the electrode holder 22. Both the positive electrode 210 and the negative electrode 211 include a semi-cylindrical working head 2101 at the front end, a protruding limiting block 2102 in the middle, and a terminal post 2103 at the rear end. The working heads 2101 of the positive electrode 210 and the negative electrode 211 are located on the left and right sides of the isolation plate 220 of the electrode holder 22, respectively. This two-lobed structure improves the excitation efficiency of the electrodes, reduces the operation time, and ensures stable and reliable operation.
[0037] The mounting cavity on one side of the hollow column 221 at the rear end of the electrode holder 22 is adapted to and locked with the locking post 231 of the locking member and the limiting block 2102 of the working electrode. The rear terminal post 2103 of the working electrode passes through the limiting groove 222 of the electrode holder 22 and is welded to the wire 5 passing through the inner tool bar 30. The contact points between the electrode holder 22, the locking member and the working electrode can be glued together. The rear terminal post 2103 passes through the limiting groove 222 of the electrode holder 22 and is connected to the wire 5 passing through the tool bar 3.
[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A radio frequency electrosurgical electrode, comprising: include: The proximal handle (1), the distal cutter head (2), the cutter bar (3) connecting the proximal handle (1) and the distal cutter head (2), and the cable connector (4), wherein the cable connector (4) is connected to the wire (5) inside the proximal handle (1); The proximal handle (1) is provided with a damping adjustment mechanism. The damping adjustment mechanism is connected to the bending part (20) of the distal cutter head (2) through at least one traction line (6), and the other end is fixed to the wire hole (11) of the wire harness (10) of the damping adjustment mechanism. The displacement of the traction line (6) is controlled by the damping adjustment mechanism to drive the bending member (20) to achieve multi-angle dynamic adjustment of the distal blade (2) during surgery.
2. The radio frequency surgical electrode of claim 1 wherein, The damping adjustment mechanism includes a wrench (12), a damping stop (13), and a cable tray (10). The damping stop (13) is set on the cable tray (10) and the damping stop (13) enables graded adjustment. The cable tray (10) is connected to the wrench (12). The cable tray (10) has a cable hole (11). One end of the traction wire (6) is connected to the bending part (20) of the distal cutter head (2), and the other end is fixed in the cable hole (11) of the cable tray (10).
3. The radio frequency surgical electrode of claim 2, wherein, The damping adjustment mechanism also includes a fastener (14) connected to the cable tray (10), the fastener (14) securing the cable tray (10) within the handle housing by screws.
4. The radiofrequency plasma surgical electrode according to claim 1, characterized in that, The traction lines (6) are two, symmetrically distributed on both sides inside the cutter bar (3), and the bending of the bending part (20) is controlled by synchronous or differential traction.
5. The radiofrequency plasma surgical electrode according to claim 1, characterized in that, The cutter bar (3) has a double-layer structure, including an inner cutter bar (30) and an outer cutter bar (31). The front end of the inner cutter bar (30) is fixedly connected to the bending member (20), and the outer cutter bar (31) is sleeved on the outside of the inner cutter bar (30). An insulating layer is provided between the inner cutter bar (30) and the outer cutter bar (31).
6. The radiofrequency plasma surgical electrode according to claim 1, characterized in that, The distal cutter head (2) includes the bending member (20) and an electrode head (21) disposed at the front end of the bending member (20), and the rear end of the bending member (20) is disposed on the cutter bar (3).
7. The radiofrequency plasma surgical electrode according to claim 6, characterized in that, The electrode head (21) includes a symmetrically arranged positive electrode (210) and a negative electrode (211), and is fixed to the electrode seat (22) by a locking member (23). The wire (5) passes through the cutter bar (3) and is electrically connected to the positive electrode (210) and the negative electrode (211) of the distal cutter head (2) for transmitting radio frequency energy.
8. The radiofrequency plasma surgical electrode according to claim 7, characterized in that, The electrode holder (22) is fixedly connected to the inner knife bar (30) at the rear end. The electrode holder (22) includes a front isolation plate (220) and a rear hollow column (221). The locking member (23) includes a sleeve ring (230) and a snap-fit post (231). The snap-fit post (231) is adapted to the limiting groove (222) of the electrode holder (22) to limit the positive electrode (210) and the negative electrode (211) to be located on both sides of the electrode holder (22).
9. The radiofrequency plasma surgical electrode according to claim 8, characterized in that, Both the positive electrode (210) and the negative electrode (211) include a semi-cylindrical working head (2101) at the front end, a middle protruding limiting block (2102), and a terminal block (2103) at the rear end. The working heads (2101) of the positive electrode (210) and the negative electrode (211) are located on the left and right sides of the isolation plate (220) of the electrode holder (22), respectively. The terminal block (2103) passes through the limiting groove (222) of the electrode holder (22) and is connected to the wire (5) passing through the tool bar (3).