Plasma radiofrequency surgical electrode

Abstract

A plasma radiofrequency surgical electrode, relating to the technical field of medical instruments. The plasma radiofrequency surgical electrode comprises a cable assembly, a proximal handle, a knife rod, and a distal knife head that are connected sequentially. A first working electrode, a second working electrode, and a bending member are provided in the distal knife head. The bending member and the knife rod form a return electrode. A plasma radiofrequency system, the first working electrode, and the return electrode form a first discharge circuit to achieve small-area high-intensity cutting operations. The plasma radiofrequency system, the second working electrode, and the return electrode form a second discharge circuit to achieve large-area cutting and hemostasis operations. By integrating multiple cutting functions along with the function of simultaneous suction and coagulation, the plasma radiofrequency surgical electrode significantly improves surgical efficiency, safety, and operational convenience, thereby providing a more advanced and reliable tool for surgical procedures.

Description

A plasma radiofrequency surgical electrode Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a plasma radiofrequency surgical electrode. Background Technology

[0002] In the forefront of medical technology exploration, the low-temperature plasma surgical system, as a revolutionary technological breakthrough, has shone brightly in the international medical field in recent years, particularly in clinical practice in many departments such as otolaryngology, spinal surgery, gynecology, dermatology and venereology, and proctology, demonstrating remarkable treatment effectiveness. The widespread application of this innovative technology benefits from its significant advantages, including but not limited to high safety, significantly reduced surgical time, minimized trauma area, and rapid postoperative recovery. These characteristics collectively contribute to a dual improvement in patient experience and treatment efficacy. The operating mechanism of the low-temperature plasma system is based on advanced electrosurgical technology, achieving precise surgical intervention with saline assistance through precise control of the plasma energy transmission process.

[0003] Specifically, the system utilizes the energy flow between the active electrode and the loop electrode to generate a dense and concentrated plasma vapor protective layer around the electrode periphery. This layer is rich in high-speed charged particles, which gain enhanced kinetic energy under the guidance of the electric field, thereby releasing sufficient energy to oxidize and decompose the molecular structure of the target tissue. Maintaining a relatively low temperature environment of 40°C to 70°C, the molecular bonds within the tissue cells are effectively broken, causing the tissue material to rapidly transform into low-molecular-weight molecules and atoms. This ensures immediate and efficient operation during tissue cutting and ablation, and significantly reduces the risk of thermal damage to surrounding healthy tissue.

[0004] However, despite the unprecedented surgical precision and safety brought by low-temperature plasma technology, existing technologies still face several limitations in the face of complex anatomical structures. Especially for surgical areas obscured by critical physiological structures or bones, or those with special orientations or difficult access, traditional plasma surgical electrodes often struggle to achieve ideal surgical contact and manipulation, limiting the effective implementation of treatment. Furthermore, how to intelligently adjust the energy output intensity to achieve optimal surgical results for the specific needs of different surgical sites while ensuring surgical safety has become a key challenge that urgently needs to be overcome in the development of electrosurgical instruments.

[0005] Given the aforementioned challenges, exploring and developing low-temperature plasma surgical systems that can overcome anatomical obstacles, precisely control energy output, and adapt to various complex surgical scenarios is not only an important direction for promoting medical technology innovation, but also an urgent need to meet the higher requirements of clinical practice and improve patient treatment outcomes.

[0006] Summary of the Invention

[0007] The purpose of this invention is to provide a plasma radiofrequency surgical electrode to solve the problem that existing plasma surgical electrodes have a single surgical mode when applied to different wound surfaces with varying intensity requirements, making it impossible to use a single electrode to perform multiple modes of operation simultaneously, thus reducing surgical efficiency.

[0008] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0009] A plasma radiofrequency surgical electrode includes: a cable assembly, a proximal handle, a blade, and a distal blade connected in sequence.

[0010] The distal cutter head is equipped with a first working electrode, a second working electrode, and a bent component. The bent component and the cutter bar form a circuit electrode. The plasma radio frequency system, the first working electrode, and the circuit electrode form a first discharge circuit. The plasma radio frequency system generates a plasma sheath at the first working electrode to perform a small-area high-power cutting operation.

[0011] The plasma radio frequency system, the second working electrode, and the loop electrode constitute the second discharge circuit. The plasma sheath generated by the plasma radio frequency system at the second working electrode performs large-area cutting and hemostasis operations.

[0012] This invention, by setting a first working electrode, a second working electrode, and a circuit electrode, enables the surgical electrode tip to achieve both small-area powerful cutting and large-area cutting and hemostasis functions on the same device, improving surgical efficiency and flexibility and reducing the need for changing instruments during surgery. The small-area powerful cutting of the first working electrode is suitable for precise surgical operations, while the large-area cutting and hemostasis function of the second working electrode helps to quickly manage surgical wounds, reduce bleeding, accelerate the surgical process, and improve the success rate of surgery.

[0013] Furthermore, the proximal handle is equipped with an adjustment component for adjusting the bending angle of the damping adjustment bending element. The bending element is equipped with a cutting spring tube that communicates with the cutter bar. The cutting spring tube forms an attraction hole at the outer edge of the distal cutter head.

[0014] The introduction of adjustment components, especially the damping adjustment design, allows doctors to precisely adjust the angle of the bending component according to the surgical needs, thereby achieving accurate positioning and operation of the cutting site and improving the accuracy and safety of the surgery.

[0015] Furthermore, the adjustment assembly includes a wrench mounted on the handle housing, a damping stop connected to the wrench, and a cable tray that cooperates with the damping stop. The cable tray has a traction bending element that enables the bending of the distal cutter head.

[0016] The combination of a wrench, damping guard, and suture reel simplifies the process of bending the blade, allowing surgeons to more easily control the blade shape, reduce surgical fatigue, and improve the surgical experience.

[0017] Furthermore, the cable assembly includes a cable connected to the plasma radiofrequency surgery system and a suction tube connected to the negative pressure suction device. The cable is electrically connected to the loop electrode, and the suction tube is connected to the blade and the cutting spring tube, respectively. The first working electrode spans the outer edge of the suction hole, and the second working electrode surrounds the suction hole.

[0018] The cable assembly not only includes the cable that connects to the plasma radio frequency system, but also integrates the suction tube of the negative pressure aspirator, realizing multiple functions such as cutting, coagulation and suction in one unit, simplifying the surgical procedure and reducing the space occupied in the operating room.

[0019] Furthermore, the outer edge of the distal cutter head also includes an electrode holder, which separates the first working electrode, the second working electrode, and the circuit electrode.

[0020] The electrode holders effectively separate the electrodes, avoiding unnecessary interference between them and enhancing the safety of the surgery.

[0021] Furthermore, the tool holder includes an inner tool holder and an outer tool holder that is fitted with the inner tool holder. The extended end of the inner tool holder is connected to a cutting type spring tube, and the outer tool holder and the bent part form a circuit electrode.

[0022] Furthermore, the proximal end of the handle near the tool bar is provided with a tool bar connector and fasteners for fixing the outer tool bar.

[0023] Furthermore, the inner tool holder is wrapped with an inner insulating layer, and the outer tool holder is wrapped with an outer insulating layer.

[0024] The design of the inner and outer blades and the insulation layer not only ensures the stability of current conduction but also ensures that no current leakage occurs during the operation, protecting the safety of patients and medical staff.

[0025] Furthermore, the damping grid has multiple damping grooves spaced apart, and the cable tray has damping bosses. Different damping bosses and damping grooves work together to achieve damping adjustment.

[0026] The present invention has the following beneficial effects:

[0027] The flexible blade design of this invention can effectively solve the problems of cutting and coagulation of wounds at different angles in the spine or joints, enabling wound cutting and simultaneous suction and coagulation surgery while maintaining a clear surgical field. By setting a first working pole and a second working pole, the surgical electrode blade can achieve two different modes on the same device: small-area powerful cutting and large-area cutting and hemostasis. This improves the efficiency and flexibility of the surgery, reduces the need to change instruments during surgery, and allows for more efficient cutting and simultaneous cutting and coagulation.

[0028] The combination of the inner blade and the cutting spring tube, along with the circuit electrode design formed by the outer blade and the bending component, not only improves the mechanical strength and durability of the scalpel tip, but also effectively removes blood and tissue debris from the surgical area through the suction hole formed by the cutting spring tube, maintaining a clear surgical field and improving surgical comfort. Attached Figure Description

[0029] Figure 1 is a schematic diagram of the structure of the plasma radiofrequency surgical electrode of the present invention;

[0030] Figure 2 is a schematic diagram of the anatomical structure of the electrode handle of the present invention;

[0031] Figure 3 is a schematic diagram of the internal structure of the handle cable tray of the present invention;

[0032] Figure 4 is a schematic diagram of the cutter head structure of the present invention;

[0033] Figure 5 is a schematic diagram of the anatomical structure of the damping barrier of the present invention;

[0034] Figure 6 is a cross-sectional schematic diagram of the cutter head structure of the present invention.

[0035] The reference numerals in Figures 1 to 6 represent: cable assembly 1, near-end handle 2, blade shank 3, far-end blade tip 4, cable 5, suction tube 6, wrench 7, bending component 8, handle housing 9, cable reel 10, traction wire 11, blade shank connector 12, fastener 13, cable hole 14, damping guard 15, first working electrode 16, second working electrode 17, electrode holder 18, suction hole 19, outer blade shank 20, inner blade shank 21, outer insulation layer 22, and inner insulation layer 23. Detailed Implementation

[0036] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Referring to Figure 1, this invention discloses a plasma radiofrequency surgical electrode, a medical surgical tool integrating efficient cutting and precise hemostasis. The electrode tip system is precisely designed, consisting of a cable assembly 1, a proximal handle 2, a blade 3, and a distal tip 4, achieving comprehensive optimization from energy transmission to operational flexibility.

[0038] Referring to Figure 2, specifically, the distal blade 4 integrates a first working electrode 16 and a second working electrode 17, as well as a bent component 8, which works together with the blade holder 3 to form a loop electrode. This design enables the plasma radiofrequency system to generate a focused plasma sheath at the first working electrode 16, suitable for high-precision, small-area, high-power cutting; simultaneously, at the second working electrode 17, another discharge circuit enables large-area tissue cutting and immediate hemostasis, greatly improving surgical efficiency and safety.

[0039] Please refer to Figures 3-4. The proximal handle 2 includes a handle housing 9, a wrench 7, a cable tray 10, a traction cable 11, a tool bar connector 12, and a fastener 13. The cable tray 10 is fixed to the wrench 7 by screws. The cable tray 10 is provided with a cable hole 14. One end of the traction cable 11 is connected to a bendable device 8, and the other end is fixed to the cable hole 14. The end of the tool bar 3 is placed inside the proximal handle 2 and is fixed by the tool bar connector 12 and the fastener 13. At the same time, the cable 5 and the suction tube 6 are respectively connected to the tool bar 3.

[0040] Referring to Figure 3, to enhance operational flexibility and precision, the proximal handle 2 incorporates an innovative damping adjustment mechanism. This mechanism includes an easy-to-use wrench 7, a precisely adjustable damping stop 15, and a linked suture reel 10. Precise control of the bending element 8 via the traction line 11 ensures that the distal blade 4 can be freely adjusted according to surgical needs, making it particularly suitable for operations in complex cavity environments. The cable assembly 1 is meticulously designed to not only ensure a stable connection with the plasma radiofrequency surgical system but also integrates negative pressure suction. The dual layout of the cable 5 and suction tube 6 effectively removes waste during surgery while maintaining excellent electrical isolation. In particular, the first working electrode 16 cleverly spans the edge of the suction hole 19, while the second working electrode 17 is arranged around the suction hole; this design further optimizes the surgical field of view and operational efficiency.

[0041] Referring to Figure 6, the electrode holder 18 located on the outer edge of the distal blade 4 effectively isolates the electrodes, ensuring a clear and accurate current path during surgery. The double-layer structure of the blade 3—the inner blade 21 and the outer blade 20—not only enhances mechanical strength but also ensures operational safety and stability through the design of the inner insulation layer 23 of the inner blade 21 and the outer insulation layer 22 of the outer blade 20. In this embodiment, multiple damping grooves are formed between the damping blocks 15, and damping bosses are provided at both ends of the suture tray 10. Through the damping adjustment mechanism, the damping bosses and damping grooves cooperate to adjust the bending degree of the bending member 8 (as shown in Figures 3 and 5), achieving smooth and precise adjustment and improving the surgeon's operating feel.

[0042] Specifically, the bending component 8 preferably uses a snake-bone tube as the basic structure to increase the flexibility and durability of the cutter head. The first working electrode 16 is a filament design (1 to 3 filaments). The first working electrode 16 and the second working electrode 17 can be made of high-temperature resistant metals such as molybdenum, tungsten, gold or platinum and their alloys as electrode materials, which can further improve the performance and life of the equipment.

[0043] During use, when facing different complex cavity wounds, the bending direction of the electrode head 4 can be adjusted in real time by pushing the wrench 7. In the first cutting mode, by controlling the first working electrode 16 to form a circuit with the circuit electrode, the plasma sheath is concentrated on the first working electrode 16, which can perform a powerful cutting operation. In the second cutting and coagulation mode, by controlling the second working electrode 17 to form a circuit with the circuit electrode, the plasma sheath is concentrated on the second electrode surface, which can achieve a larger area cutting and hemostasis operation.

[0044] In summary, the plasma radiofrequency surgical electrode provided by this invention, with its unique structural design and material selection, effectively improves the precision and efficiency of surgery. Especially when dealing with complex cavity wounds, it has real-time adjustable bending characteristics and efficient cutting and hemostasis capabilities.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A plasma radiofrequency surgical electrode, characterized in that, include: The cable assembly (1), the proximal handle (2), the cutter bar (3), and the distal cutter head (4) are connected in sequence. The distal cutter head (4) is provided with a first working electrode (16), a second working electrode (17) and a bending member (8). The bending member (8) and the cutter bar (3) form a loop electrode. The plasma radio frequency system, the first working electrode (16) and the loop electrode form a first discharge circuit. The plasma radio frequency system performs a small-area high-power cutting operation on the plasma sheath generated at the first working electrode (16). The plasma radio frequency system, the second working electrode (17), and the loop electrode form a second discharge circuit. The plasma radio frequency system performs large-area cutting and hemostasis operations on the plasma sheath generated at the second working electrode (17).

2. The plasma radiofrequency surgical electrode according to claim 1, characterized in that, The proximal handle (2) is provided with an adjustment component for damping adjustment of the bending angle of the bending member (8). The bending member (8) is provided with a cutting spring tube connected to the cutter bar (3). The cutting spring tube forms an attraction hole (19) at the outer edge of the distal cutter head (4).

3. The plasma radiofrequency surgical electrode according to claim 2, characterized in that, The adjustment assembly includes a wrench (7) mounted on the handle housing (9), a damping stop (15) connected to the wrench (7), and a cable tray (10) cooperating with the damping stop (15). The traction line (11) on the cable tray (10) pulls the bending member (8) to achieve bending of the distal cutter head (4).

4. The plasma radiofrequency surgical electrode according to claim 3, characterized in that, The cable assembly (1) includes a cable (5) connected to the plasma radiofrequency surgery system and a suction tube (6) connected to the negative pressure suction device. The cable (5) is electrically connected to the circuit electrode. The suction tube (6) is connected to the blade (3) and the cutting spring tube, respectively. The first working electrode (16) spans the outer edge of the suction hole (19), and the second working electrode (17) surrounds the suction hole (19).

5. The plasma radiofrequency surgical electrode according to claim 1, characterized in that, The outer edge of the distal cutter head (4) also includes an electrode holder (18), which separates the first working electrode (16), the second working electrode (17), and the circuit electrode.

6. The plasma radiofrequency surgical electrode according to claim 2, characterized in that, The cutter bar (3) includes an inner cutter bar (21) and an outer cutter bar (20) sleeved on the inner cutter bar (21). The extended end of the inner cutter bar (21) is connected to the cutting spring tube, and the outer cutter bar (20) and the bending member (8) form the circuit electrode.

7. The plasma radiofrequency surgical electrode according to claim 6, characterized in that, The proximal handle (2) near the tool bar (3) is provided with a tool bar connector (12) and a fastener (13) for fixing the outer tool bar (21).

8. The plasma radiofrequency surgical electrode according to claim 6, characterized in that, The inner blade (21) is wrapped with an inner insulating layer (23), and the outer blade (20) is wrapped with an outer insulating layer (22).

9. The plasma radiofrequency surgical electrode according to claim 3, characterized in that, The damping barrier (15) is provided with multiple damping grooves at intervals, and the cable tray (10) is provided with damping bosses. Different damping bosses cooperate with the damping grooves to achieve damping adjustment.

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