Anti-breakdown radio frequency plasma surgical electrode

Abstract

Disclosed is an anti-breakdown radio frequency plasma surgical electrode, which relates to the technical field of surgical medical instruments. The surgical electrode comprises a cutter head and a cutter bar, and the cutter head is composed of a ceramic head, an electrode plate, and an electrode wire. The ceramic head is integrally formed and provided thereon with a suction catheter connecting hole, a suction through hole, an electrode wire clamping hole, and a mounting groove; the suction catheter connecting hole is in communication with the suction through hole, a hole opening of the suction through hole and a hole opening of the electrode wire clamping hole penetrate through a front end face of the ceramic head, the electrode plate is installed on the front end face of the ceramic head, and the electrode wire passes through the electrode wire clamping hole and is conductively connected to the electrode plate; the cutter bar is insulated from the electrode plate. According to the surgical electrode, the electrode wire is completely arranged in the integrally-formed ceramic head, a negative electrode catheter is inserted into the ceramic head and completely isolated from the electrode wire and the electrode plate, thus avoiding the situation of existing surgical electrodes that electrode heads are broken down due to the presence of multiple assembly components or the displacement of components when in use, so that the insulation performance of the surgical electrode and the surgical safety are greatly improved.

Description

A breakdown-proof radiofrequency plasma surgical electrode Technical Field

[0001] The utility model relates to the technical field of surgical medical instruments, in particular to a breakdown-proof radio frequency plasma surgical electrode. Background Art

[0002] In recent years, low-temperature plasma surgical systems have been widely used abroad to treat diseases such as otolaryngology, spinal surgery, gynecology, and anorectal surgery. The surgical temperature can be precisely controlled within a range of 40 to 70°C, and they offer high safety, short surgical times, minimal trauma, and a rapid postoperative recovery period. The basic principle of a plasma surgical system is that plasma energy flows between a working electrode and a return electrode, conducting electricity through saline to form a highly concentrated plasma vapor sheath around the electrodes. This plasma sheath is composed of a large number of charged particles. Accelerated by the electric field, these charged particles generate sufficient energy and possess strong oxidizing properties. At low temperatures (40 to 70°C), they break the molecular bonds that make up the target tissue cells, rapidly breaking the tissue into low-molecular-weight molecules and atoms. This results in real-time, highly efficient tissue cutting and ablation at relatively low temperatures.

[0003] A radio frequency plasma surgical electrode (publication number: CN204219039U) is the closest existing technology. The loop electrode and active electrode of its electrode head are isolated by a separately arranged insulator. During the product assembly (or use), there is a probability that the insulator inside the electrode head may shift and cause insulation errors, resulting in the risk of the loop electrode being broken down during use. Its safety needs to be improved. Secondly, the insulation performance of the electrode is poor and the service life of the electrode is short.

[0004] Utility Model Content

[0005] The utility model provides a breakdown-proof radio frequency plasma surgical electrode, which solves the problem that the existing radio frequency plasma electrode has the risk of being broken down during use.

[0006] A breakdown-proof radiofrequency plasma surgical electrode comprises a knife head and a knife rod, wherein the knife head is composed of a ceramic head and an electrode sheet and an electrode wire arranged on the ceramic head;

[0007] The ceramic head is made of one-piece molding process, and is provided with suction tube connection hole, suction through hole, electrode wire clamp hole and installation slot;

[0008] The suction tube connection hole is connected to the suction through hole, and the openings of the suction through hole and the electrode wire clamping hole pass through the front end surface of the ceramic head. An electrode sheet is installed on the front end surface of the ceramic head. The electrode wire is arranged in the installation groove and the protruding head of the electrode wire passes through the electrode wire clamping hole and is electrically connected to the electrode sheet.

[0009] The knife rod comprises a negative electrode tube and a suction tube. The negative electrode tube is plugged into the ceramic head and is insulated from the electrode sheet.

[0010] Furthermore, the electrode sheet is provided with a plurality of discharge blind holes and a plurality of fixing holes, the fixing holes are arranged corresponding to the electrode wire clamp holes, and the shapes of the discharge blind holes include square, triangle, circle, and strip.

[0011] Furthermore, the above-mentioned suction tube is inserted into the suction tube connecting hole, and the outer diameter of the suction tube is adapted to the inner diameter of the suction tube connecting hole.

[0012] Furthermore, the outside of the electrode wire is covered with an insulating sleeve.

[0013] Furthermore, the outer layer of the negative electrode tube is coated with an insulating outer layer.

[0014] Furthermore, the above-mentioned negative electrode tube is connected to the negative electrode wire, the electrode wire is connected to the positive electrode wire, and the negative electrode wire and the positive electrode wire are both connected to the RF host through a connector.

[0015] The utility model has the following beneficial effects:

[0016] (1) The electrode of the present invention completely arranges the electrode wire in an integrally formed ceramic head, and the negative electrode tube is plugged into the ceramic head and is completely isolated from the electrode wire and the electrode sheet, thereby avoiding the possibility of the electrode head being punctured due to the large number of assembled parts or the displacement of parts during use in existing surgical electrodes, thereby greatly improving the insulation performance of the electrode and the safety of the operation.

[0017] (2) The positive electrode of the present invention is arranged on an insulating shell made of ceramic, which has good insulation performance and is conducive to improving the service life of the electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is an overall appearance diagram of the electrode of the present invention;

[0019] Figure 2 is an exploded view of the electrode of the present invention;

[0020] Figure 3 is a cross-sectional view of the electrode of the present invention along the axial direction;

[0021] FIG4 is a front side view of the ceramic head of the present invention;

[0022] FIG5 is a rear side view of the ceramic head of the present invention.

[0023] In the figure: 1-cutter head; 10-ceramic head; 101-suction tube connection hole; 102-suction through hole; 103-electrode wire clamping hole; 104-mounting slot; 11-electrode sheet; 12-electrode wire; 2-cutter rod; 20-negative tube; 21-suction tube; 22-insulating outer layer. DETAILED DESCRIPTION

[0024] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0025] Referring to Figures 1 to 3, the present invention provides a breakdown-proof radiofrequency plasma surgical electrode, comprising: a cutting head 1 and a cutting rod 2, wherein the cutting head 1 is composed of a ceramic head 10 and an electrode sheet 11 and an electrode wire 12 arranged on the ceramic head 10, and the cutting rod 2 includes a negative electrode tube 20 and a suction tube 21.

[0026] 4 and 5 , the ceramic head 10 includes a cylindrical body and a front end face, the front end face is perpendicularly arranged to the cylindrical body, and the front end face is also cylindrical in shape; an axial suction tube connection hole 101 is provided on the cylindrical body for installing and fixing the suction tube 21, and secondly, an arc-shaped installation groove 104 is provided on the cylindrical body, and the electrode wire 12 is laid along the installation groove 104. A suction through hole 102 is provided at the center of the end face of the front end face of the ceramic head 10, and the suction through hole 102 is connected to the suction tube connecting hole 101. The suction tube 21 is inserted and fixed in the suction tube connecting hole 101, so that the tissue and waste liquid cut during the operation are sucked out; a plurality of electrode wire clamping holes 103 are provided around the suction through hole 102, and the electrode wire clamping holes 103 are connected to the mounting groove 104, which are used to pass the end of the electrode wire 12 with the protruding head through the electrode wire clamping hole 103 and conductively connect it to the electrode sheet 11. One end of the electrode wire 12 is set as a protruding head with a large diameter, which is stuck in the fixing hole of the electrode sheet 11. The protruding heads of the multiple electrode wires 12 provide the energy required during the operation and form a plasma cutting area through discharge.

[0027] Preferably, the wire clamping hole 103 and the mounting slot 104 form a 90° angle. The wire 12 is subjected to tension after passing through it, preventing it from falling and ensuring safe use. The curved mounting slot 104 also allows the bent wire 12 to pass through, restraining and supporting it, preventing it from falling and contacting the negative electrode tube 20, thereby ensuring safe insulation between the positive and negative electrodes.

[0028] Preferably, the outer diameter of the suction tube 21 is slightly smaller than the inner diameter of the suction tube connecting hole 101, so that the suction tube 21 can be easily inserted into the suction tube connecting hole 101 without leakage or loosening; the suction tube 21 is made of polyetheretherketone material, which is resistant to high temperature and has a certain elasticity.

[0029] Preferably, the outer portion of the electrode wire 12 is covered with an insulating sleeve for enhancing insulation. The insulating sleeve is made of polyimide, which has high insulation and can withstand high temperatures above 400°C.

[0030] The electrode sheet 11 is provided with a plurality of discharge blind holes and a plurality of fixing holes. The fixing holes are arranged corresponding to the electrode wire clamp holes 103. The shapes of the discharge blind holes include square, triangle, circle, strip and other arbitrary shapes, so that the surface of the electrode sheet 11 has a comprehensive and energy-sufficient discharge area.

[0031] The ceramic head 10 is formed by integral casting, which is conducive to streamlining the parts required for electrode assembly, thereby reducing the risk of electrode breakdown caused by assembly errors.

[0032] The negative electrode tube 20 is made of conductive metal material. It is inserted into the outside of the cylindrical body of the ceramic head 10 and leaves a large distance from the electrode sheet 11, which plays the role of insulation and isolation. The negative electrode tube 20 has a part of the tube body exposed on the side close to the electrode sheet 11, which serves as the negative pole of the circuit.

[0033] The outer layer of the negative electrode tube 20 is coated with an insulating outer layer 22 , which is also made of polyimide.

[0034] The negative electrode tube 20 is connected to the negative electrode wire, and the multiple electrode wires 12 are crimped together and then connected to the positive electrode wire through welding. The negative electrode wire and the positive electrode wire are both connected to the RF host through a connector.

[0035] When assembling the electrode of the present invention, the electrode wire 12 is first passed through the electrode sheet 11, and then an insulating sleeve is sleeved on the outside of the electrode wire 12. The electrode wire 12 sleeved with the electrode sheet 11 is passed through the electrode wire clamping hole 103 of the ceramic head 10, bent 90° and then fixed in the installation groove 104; the suction tube 21 is inserted into the suction tube connecting hole 101, and then the negative electrode tube 20 with the insulating outer layer 22 is sleeved on the ceramic head 10.

[0036] The above description is merely a preferred embodiment of the present invention and does not represent all possible forms of the present invention. The scope of protection of the present invention is not limited to such specific descriptions and embodiments. Various other modifications and improvements based on the technical teachings disclosed in the present invention without departing from the essence of the present invention are still within the scope of protection of the present invention.

Claims

1. A radiofrequency plasma surgical electrode against breakdown, comprising a knife head (1) and a knife rod (2), characterized in that, The cutter head (1) is composed of a ceramic head (10), an electrode plate (11) and an electrode wire (12) arranged on the ceramic head (10); The ceramic head (10) is made by an integral molding process, and is provided with a suction tube connection hole (101), a suction through hole (102), an electrode wire clamping hole (103) and a mounting groove (104); The suction tube connection hole (101) is communicated with the suction through hole (102), the orifices of the suction through hole (102) and the electrode wire clamping hole (103) penetrate through the front end face of the ceramic head (10), the electrode plate (11) is mounted on the front end face of the ceramic head (10), the electrode wire (12) is arranged in the mounting groove (104) and the protruding head of the electrode wire (12) passes through the electrode wire clamping hole (103) to be electrically connected with the electrode plate (11); The cutter bar (2) includes a negative electrode tube (20) and a suction tube (21), the negative electrode tube (20) is inserted on the ceramic head (10) and is insulated from the electrode plate (11).

2. The anti-breakdown radio frequency plasma surgical electrode according to claim 1, characterized in that: A plurality of discharge blind holes and a plurality of fixing holes are formed in the electrode plate (11), the fixing holes are arranged corresponding to the electrode wire clamping holes (103), and the shapes of the discharge blind holes include square, triangular, circular and strip-shaped.

3. The anti-breakdown radio frequency plasma surgical electrode according to claim 1, wherein: The suction tube (21) is inserted in the suction tube connection hole (101), and the outer diameter of the suction tube (21) is adapted to the inner diameter of the suction tube connection hole (101).

4. The anti-breakdown radio frequency plasma surgical electrode according to claim 1, characterized in that: An insulating sleeve is sleeved outside the electrode wire (12).

5. The anti-breakdown radio frequency plasma surgical electrode according to claim 1, characterized in that: An insulating outer layer (22) is laid on the outer layer of the negative electrode tube (20).

6. The anti-breakdown radio frequency plasma surgical electrode according to any one of claims 1 to 5, characterized in that: The negative electrode tube (20) is connected with a negative electrode wire, the electrode wire (12) is connected with a positive electrode wire, and both the negative electrode wire and the positive electrode wire are connected with a radio frequency host through a connector.

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