A new type of plasma radio frequency surgical electrode

Abstract

This invention relates to the field of medical device technology and provides a novel plasma radiofrequency surgical electrode, comprising an electrode rod assembly, a handle assembly, a connecting cable, and a suction tube. A rotating wheel is provided between the handle assembly and the electrode rod assembly. A water channel is provided in the middle of the electrode rod assembly. One end of the suction tube is inserted into the handle assembly and connected to the water channel, and the other end of the suction tube is externally connected to a negative pressure suction device. The electrode rod assembly includes at least a working electrode, a return electrode, an isolation layer, and an insulating protective layer. The working electrode is mainly composed of a fixedly connected metal wire and a metal sheet. The tail of the working electrode is connected to the rear conductor by welding or crimping. This invention improves the user's work efficiency, shortens the operation time, reduces patient pain, and reduces the user's burden.

Description

Technical Field

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

[0002] The plasma radiofrequency ablation system utilizes plasma ablation technology, also known as plasma cryoablation, to perform procedures such as cutting and coagulation. It uses radiofrequency energy (approximately 100 kHz) to form a thin plasma layer at a relatively low temperature (typically 40℃-70℃), attracting a large number of ions around the electrode head. These plasma particles move under the energy provided by the plasma head, gaining sufficient energy to collide and break the molecular chains between tissue cells, forming elemental molecules and low-molecular-weight gases, thus achieving a precise ablation effect. Its clinical applications are increasingly common, including arthroscopic surgery, ENT procedures, and intervertebral foramen procedures.

[0003] Plasma surgery requires a conductive solution (such as physiological saline) environment to be performed, where the conductive solution forms a thin layer between the working electrode and the return electrode. When the energy supply is sufficient, the conductive solution transforms into a vapor layer containing charged particles. When high-energy charged particles connect with tissue, they decompose the tissue through molecular dissociation.

[0004] Traditional plasma radiofrequency surgical electrodes have semi-circular or flat tips, which often limit the speed and efficiency of cutting and coagulation in narrow areas due to the shape of the working tip. It often requires adjusting the surgical electrode to a specific angle or position, or using other instruments in conjunction, to perform cutting or coagulation in narrow areas. This necessitates unconventional hand gestures from the user, which may not only affect the surgical outcome but also potentially harm the patient, prolong the operation and recovery time, increase the user's workload, and cause additional pain for the patient.

[0005] Furthermore, the working end of a traditional plasma radiofrequency surgical electrode typically consists of a ball-tipped metal wire and a flat metal plate. During use, the energy output consumes energy, and both the ball tip and the metal plate are at risk of detaching, potentially causing injury to the patient.

[0006] In traditional plasma radiofrequency surgical electrodes, the working end has a fixed orientation. Users adjust their hand gestures and grip positions according to the area to be treated to achieve the optimal contact angle and distance between the working surface and the treatment site. However, due to the diverse environments during surgery, many areas may be reversed on the side normally held in the hand. This necessitates unconventional hand gestures, which can not only affect surgical outcomes but also potentially harm the patient, prolong surgery and recovery time, increase the user's workload, and cause additional pain for the patient. Summary of the Invention

[0007] This invention provides a novel plasma radiofrequency surgical electrode to solve the problems mentioned in the background art.

[0008] A novel plasma radiofrequency surgical electrode includes an electrode rod assembly, a handle assembly, a connecting cable, and a suction tube, wherein a rotating wheel is provided between the handle assembly and the electrode rod assembly;

[0009] The electrode rod assembly has a water channel in the middle. One end of the suction tube is inserted into the handle assembly and connected to the water channel. The other end of the suction tube is connected to a negative pressure suction device.

[0010] The electrode rod assembly includes at least a working electrode, a return electrode, an isolation layer, and an insulating protective layer;

[0011] The working electrode is mainly composed of a fixedly connected metal wire and a metal sheet, which are welded together. The tail end of the working electrode is connected to the rear conductor by welding or crimping.

[0012] One end of the connecting cable is inserted into the handle assembly and connected to the electrode rod assembly, and the other end of the connecting cable is connected to the host controller.

[0013] The rotating wheel is rotatably connected to the end of the handle assembly, and the electrode rod assembly passes through the inner hole of the rotating wheel and is fixedly connected to the rotating wheel.

[0014] Furthermore, the rotating wheel and the outer shell of the handle assembly are snap-fitted together, and the assembly structure of the rotating wheel and the handle assembly is an I-fit.

[0015] Furthermore, both the working electrode and the return electrode are made of a metal material with good conductivity and high temperature resistance, and a plasma layer is formed between the working electrode and the return electrode.

[0016] Furthermore, the isolation layer is fitted onto the outer ring of the working end of the electrode rod assembly, and the insulating protective layer is disposed on the outer wall of the electrode rod assembly.

[0017] Furthermore, the isolation layer is an insulating component, which is configured as a conical shape and is sleeved and fixed to the metal rod of the electrode rod assembly.

[0018] Furthermore, the insulating component has a liquid flow channel inside.

[0019] Furthermore, the connecting cable is connected to the electrode rod assembly via a pipe clamp, the connector of the connecting cable is soldered to the pipe clamp, the handle assembly has a slot for fixing the pipe clamp, the pipe clamp is fixed in the slot, and the metal rod of the electrode rod assembly passes through and is elastically engaged in the pipe clamp.

[0020] Furthermore, the connecting cable is electrically connected to the return electrode.

[0021] Furthermore, the working electrode has protrusions on its surface and a slot in its center.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] ① In this invention, the novel front-end structure, with its conical tip, allows for efficient and rapid insertion into narrow areas, while the rounded transition prevents damage to surrounding tissue. The novel working electrode structure allows for both large-area cutting and coagulation, as well as point cutting and coagulation using the pointed tip. The integrated design of the working electrode eliminates the risk of tip breakage or electrode detachment, and its coordination with other components is more stable and effective.

[0024] ② In this invention, the working end is rotatable, allowing for easier access to the surgical site during surgery. The handle's shape does not affect grip comfort, enabling the user to maintain a comfortable posture without requiring changes in hand position due to variations in the angle of the working point. This significantly improves user efficiency, shortens surgical time, reduces patient pain, and lessens the user's burden. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0026] Figure 1 This is a schematic diagram of the overall structure of a novel plasma radiofrequency surgical electrode.

[0027] Figure 2 This is a schematic diagram of the working electrode;

[0028] Figure 3 This is a schematic diagram of the insulating components;

[0029] Figure 4 This is a schematic diagram of the front end structure of the electrode rod assembly;

[0030] Figure 5 This is a schematic diagram showing the assembly method of the rotary wheel, handle assembly, and electrode rod assembly;

[0031] Figure 6This is a diagram illustrating the cable connection method;

[0032] Figure 7 This is a cross-sectional view of the overall structure of a novel plasma radiofrequency surgical electrode.

[0033] In the diagram: 1. Electrode rod assembly; 2. Handle assembly; 3. Connecting cable; 4. Suction tube; 5. Rotary wheel; 6. Wire harness; 7. Pipe clamp; 8. Metal rod; 9. Working electrode; 10. Insulating component; 101. Liquid flow channel; 102. Assembly tank; 11. Water channel. Detailed Implementation

[0034] The technical solutions of the embodiments 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.

[0035] like Figure 1-7 As shown, a novel plasma radiofrequency surgical electrode includes an electrode rod assembly 1, a handle assembly 2, a connecting cable 3, and a suction tube 4. A rotating wheel 5 is provided between the handle assembly 2 and the electrode rod assembly 1. A water channel 11 is provided in the middle of the electrode rod assembly 1. One end of the suction tube 4 is inserted into the handle assembly 2 and connected to the water channel 11. The other end of the suction tube 4 is externally connected to a negative pressure suction device. The electrode rod assembly 1 includes at least a working electrode 9, a return electrode, an isolation layer, and an insulating protective layer. The working electrode 9 is mainly composed of a fixedly connected metal wire and a metal sheet, which are welded together. The tail (metal wire) of the working electrode 9 is fixed and connected to the rear conductor (metal rod 8 of the electrode rod assembly 1) by welding or crimping. One end of the connecting cable 3 is inserted into the handle assembly 2 and connected to the electrode rod assembly 1 (return electrode and rear conductor). The other end of the connecting cable 3 is connected to the host controller, which is used to transmit the energy of the host controller to the working electrode 9. The rotating wheel 5 is rotatably connected to the end of the handle assembly 2. The electrode rod assembly 1 passes through the inner hole of the rotating wheel 5 and is fixedly connected to the rotating wheel 5. Rotating the rotating wheel 5 can drive the electrode rod assembly 1 to achieve the rotation of the working end.

[0036] like Figure 1-7 As shown, the outer shell of the rotary wheel 5 and the handle assembly 2 are snap-fitted together, and the assembly structure of the rotary wheel 5 and the handle assembly 2 is an I-shaped fit.

[0037] like Figure 1-7 As shown, both the working electrode 9 and the return electrode are made of metal materials with good conductivity and high temperature resistance. A plasma layer is formed between the working electrode 9 and the return electrode to cut or coagulate the surrounding tissue to be operated on.

[0038] like Figure 1-7 As shown, the isolation layer is fitted onto the outer ring of the working end of the electrode rod assembly 1, and the insulating protective layer is disposed on the outer wall of the electrode rod assembly 1 (metal rod 8).

[0039] like Figure 1-7 As shown, the isolation layer is an insulating component 10. The insulating component 10 is a conical shape with a small front end and a large rear end and an arc. The insulating component 10 is sleeved and fixed (adhesive-bonded) to the metal rod 8 of the electrode rod assembly 1. During use, it can be nimbly and conveniently inserted into narrow parts to work, and can achieve efficient work.

[0040] like Figure 1-7 As shown, the insulating component has a liquid flow channel 101 inside, which can be used with the suction tube 4 and the external negative pressure device to suck out the liquid in the surgical cavity; the inner wall of the liquid outflow channel is smooth, without step differences or recessed blind cavities, which makes it less likely to cause blockage of the liquid channel; the insulating component 10 is provided with an assembly groove 102 that matches the working electrode 9; the working electrode 9 is inserted into the assembly groove 102 and fixed with glue.

[0041] like Figure 1-7 As shown, the connecting cable 3 is connected to the electrode rod assembly 1 through the tube clamp 7. The connector of the connecting cable 3 (such as the wire harness 6) is soldered to the tube clamp 7. The handle assembly 2 has a slot for fixing the tube clamp 7. The tube clamp 7 is fixed in the slot. The metal rod 8 of the electrode rod assembly 1 passes through and is elastically clamped (held) in the tube clamp 7 to realize the conduction of the circuit without affecting the rotation of the electrode rod assembly 1. For the working end with metal wire inside, a metal tube can also be pressed and connected in the same way.

[0042] like Figure 1-7 As shown, the connecting cable 3 is electrically connected to the return electrode (the tail of the metal rod 8).

[0043] like Figure 1-7 As shown, the working electrode 9 (metal sheet) has integrally formed protrusions on its surface and a slot in its center. The protrusions on the surface of the working electrode 9 are for bearing force during use, facilitating force application; the slot in the center of the working electrode 9 is used to cooperate with the water channel 11 to form a liquid drainage channel.

[0044] The working principle of this novel plasma radiofrequency surgical electrode in this embodiment is as follows: The working electrode 9 is designed as an integrated unit, eliminating the risk of tip breakage or detachment. Its coordination with other components is more stable and effective, improving user efficiency, shortening surgical time, reducing patient pain, and lessening the user's burden. By rotating the wheel 5, the electrode rod assembly 1 (working end) can rotate, allowing for easier access to the desired area during surgery. The handle's shape does not affect grip comfort, allowing the user to maintain a comfortable posture without requiring changes in hand position due to changes in the angle of application. This significantly improves user efficiency, shortens surgical time, reduces patient pain, and lessens the user's burden.

[0045] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 novel plasma radiofrequency surgical electrode, characterized in that: It includes an electrode rod assembly (1), a handle assembly (2), a connecting cable (3) and a suction tube (4), wherein a rotating wheel (5) is provided between the handle assembly (2) and the electrode rod assembly (1); The electrode rod assembly (1) is provided with a water channel (11) in the middle. One end of the suction tube (4) is inserted into the handle assembly (2) and connected to the water channel (11). The other end of the suction tube (4) is connected to a negative pressure suction device. The electrode rod assembly (1) includes at least a working electrode (9), a return electrode, an isolation layer, and an insulating protective layer; The working electrode (9) is mainly composed of a fixedly connected metal wire and a metal sheet. The tail end of the working electrode (9) is connected to the rear conductor by welding or crimping. One end of the connecting cable (3) is inserted into the handle assembly (2) and connected to the electrode rod assembly (1), and the other end of the connecting cable (3) is connected to the host controller. The rotating wheel (5) is rotatably connected to the end of the handle assembly (2), and the electrode rod assembly (1) passes through the inner hole of the rotating wheel (5) and is fixedly connected to the rotating wheel (5).

2. The novel plasma radiofrequency surgical electrode according to claim 1, characterized in that: The rotating wheel (5) and the outer shell of the handle assembly (2) are snap-fitted together, and the assembly structure of the rotating wheel (5) and the handle assembly (2) is an I-shaped fit.

3. The novel plasma radiofrequency surgical electrode according to claim 1, characterized in that: The working electrode (9) and the return electrode are both made of metal materials with good conductivity and high temperature resistance, and a plasma layer is formed between the working electrode (9) and the return electrode.

4. The novel plasma radiofrequency surgical electrode according to claim 1, characterized in that: An isolation layer is fitted onto the outer ring of the working end of the electrode rod assembly (1), and an insulating protective layer is disposed on the outer wall of the electrode rod assembly (1).

5. A novel plasma radiofrequency surgical electrode according to claim 1, characterized in that: The isolation layer is an insulating component (10), which is configured as a conical shape and is sleeved and fixed on the metal rod (8) of the electrode rod assembly (1).

6. A novel plasma radiofrequency surgical electrode according to claim 5, characterized in that: The insulating component (10) has a liquid flow channel (101) inside.

7. A novel plasma radiofrequency surgical electrode according to claim 1, characterized in that: The connecting cable (3) is connected to the electrode rod assembly (1) through a pipe clamp (7). The connector of the connecting cable (3) is welded to the pipe clamp (7). The handle assembly (2) has a slot for fixing the pipe clamp (7). The pipe clamp (7) is fixed in the slot. The metal rod (8) of the electrode rod assembly (1) passes through and is elastically clamped in the pipe clamp (7).

8. A novel plasma radiofrequency surgical electrode according to claim 1, characterized in that: The connecting cable (3) is electrically connected to the return electrode.

9. A novel plasma radiofrequency surgical electrode according to claim 1, characterized in that: The working electrode (9) has protrusions on its surface and a slot in its middle.

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