KR20110061072A - High frequency ablation electrode - Google Patents

Abstract

PURPOSE: An electrode for a high frequency surgery is provided to assemble the blocks of an electrode in parallel, thereby increasing the productivity of electrodes. CONSTITUTION: A first block(1) includes an electrode rod for a surgery made of a micro tube which emits a high frequency wave. A second block(2) includes a coolant inflow tube inserted into the electrode rod. A high frequency output line(3) is electrically coupled with the second block. A temperature sensor(3s) is installed in the second block. An external case(4) is coupled with the first block.

Description

High Frequency Medical Surgical Electrode {HIGH FREQUENCY ABLATION ELECTRODE}

The present invention relates to an electrode for high frequency medical surgery.

In general, in the medical field, a conduit of refrigerant and a temperature sensor are provided inside an electrode rod that emits a high frequency of hollow microtubules having a diameter of about 0.3 to 0.5 mm. Insert the electrode into the surgical site, supply high-frequency electrical energy that can be heated to a temperature of about 100 ° C, and circulate a refrigerant near 0 ° C inside the electrode to circulate a temperature of 45 ° C to 60 ° C. Thermosurgery system is performed to coagulate, reduce, or ablate a living tissue of lesions with controlled electric energy heat.

Therefore, the prior art relating to a high frequency surgical electrode (HIGH FREQUENCY ABLATION ELECTRODE) is known in various ways, for example, U.S. Patent No. 4,411,266 (October 25, 1983), U.S. Patent No. 6,210,411 B1 (2001. 04. 03.), U.S. Patent No. 6,506,189 B1 (January 14, 2003), Korean Patent Publication No. 10-0466966 (January 24, 2005), Korean Patent Publication No. 10-0640283 (2006) 11.01 Announcement), and many other prior art are disclosed.

The basic structure of the HIGH FREQUENCY ABLATION ELECTRODE is a conductive electrode that can emit high frequency electrical energy and cooling to prevent carbonization of biological tissues by overheating the electrode. ) Means, and components such as temperature sensing means for controlling the electrode at a predetermined temperature must be provided.

Research on the electrode for radiofrequency surgery is still ongoing. In the above-mentioned inventions of the prior art, specific techniques relating to high-frequency surgical electrodes have been proposed. However, as an example of a common problem of the prior art, as shown in Figure 4, the inlet pipe of the refrigerant in the inner space of the electrode (T) made of a microtube having a diameter of about 0.5 ~ 0.3mm ( D) and temperature sensor (S), etc. are concentrated in a built-in configuration, because the passage of the refrigerant is narrowed, it is difficult to circulate sufficient refrigerant effective for cooling and the passage is coalesced There was a structural problem in that expensive electrodes cannot be used.

In addition, the electrode T, the refrigerant inlet tube D, the outlet tube U, the high frequency output conductor e, and the conductor wire i of the temperature sensor S are collectively arranged in one block B. Because it has a structure that is firmly fixed, it must be manufactured in one hand made, where one person manufactures the finished product. Not only is this high, but it is also very difficult and difficult to install the temperature sensor inside the electrode or the refrigerant inlet tube, so if the defective part occurs in part, the entire surgical electrode cannot be used. There was a problem of productivity in which the cost is high.

In addition, since the space of the inflow chamber C1 and the outflow chamber C2 is formed in the block B, the pressure of the refrigerant introduced through the conduit from the outside is relaxed in the space of the inflow chamber C1, The narrow inlet of the refrigerant prevents the refrigerant from flowing quickly, which makes it difficult to control the temperature of the electrode.

In the block (B) provided with electrodes, the high frequency output lead (e), the lead wire (i) of the temperature sensor, and the inflow pipe (D) and the outflow pipe (U) of the refrigerant are complicated to each other. Due to the complexity of the wires and conduits of other medical devices provided in the operating room due to the complexity of the various strands, handling and management are inconvenient, and the electrodes cannot be disassembled, which causes inconvenience in use.

SUMMARY OF THE INVENTION An object of the present invention is to combine a block of electrodes in a high frequency surgical electrode, which is composed of a conductive first block having an electrode rod and a conductive second block having a refrigerant inlet pipe. It is to provide a high-frequency surgical electrode with improved production quality and improved quality by assembling fabrication.

Another object of the present invention is to connect the high-frequency output wire with a built-in temperature sensor on the side of the conductive second block, the temperature sensor is installed at the same time as the high-frequency output wire is bonded, the refrigerant inlet pipe There is no temperature sensor in the space, to provide a high-frequency surgical electrode is easy to control the temperature of the electrode by the high-pressure circulation of the refrigerant through the secured flow path (流 路).

Still another object of the present invention is to provide a high frequency surgical electrode which is simpler in structure and simpler to use and handle by using a refrigerant inlet and outlet tube as a double tube and a conductor and a high frequency output conductor of a temperature sensor as an insulating double conductor. It is.

The present invention relates to a high-frequency electrode rod of a microtubule in which an insulating layer for suppressing the emission of a high frequency is coated on a surface excluding a sharp tip of a tip that emits a high frequency. It is composed of a combination of the conductive first block provided, and the conductive second block provided with a refrigerant inlet pipe of the micro-tub inserted into the space of the electrode.

The protruding portion provided at the tip end of the second block is separated by a screw portion, and a leakage preventing seal is fitted between the engaging portion of the first block and the second block. The electrode is supported by a hub in the center of the first block, and the refrigerant inlet tube is provided through the center of the second block as a refrigerant outlet tube and a double tube.

Accordingly, when the first block and the second block are screwed together, the refrigerant inlet pipe is positioned at the center of the inner space of the electrode to secure the outlet passage of the refrigerant around the outside of the refrigerant inlet pipe. In addition, the outflow hole of the refrigerant penetrates into the outflow chamber through the protruding portion of the second block, and the outflow tube of the coolant in which the coolant inflow pipe is inserted into the double pipe is introduced into the rear end side of the outflow chamber.

In addition, a hollow inside a high frequency output lead connected to an RF power supply has a temperature sensor and a temperature sensor is inserted into the second block. The high frequency output wire is electrically bonded to the side surfaces of the two blocks. The temperature sensor is installed at the same time as the high frequency output wire is connected.

In addition, the outer cylinder, which is a cover, is screwed to the threaded portion of the first block so that the second block portion is built into the outer cylinder, and through the rear end of the outer cylinder, the inlet and outlet pipes of the refrigerant are introduced into the refrigerant supply unit through one double pipe. In addition, the high frequency output wire connected to the high frequency output and the temperature sensor wire connected to the temperature monitor are constructed by insulated double wires.

According to the present invention, a cooling inlet tube is positioned in the center of a space inside an electrode by a combination of a first block having an electrode and a second block having a refrigerant inlet tube, and a temperature sensor is provided in the inner space of the inlet tube. Since a sufficient flow path is secured, the refrigerant flowing at a high pressure through the inlet pipe directly from the refrigerant supply unit circulates through the inner space of the electrode, flows out through the outlet hole to the outlet chamber, and connects the outlet tube associated with the outlet chamber. It is discharged to the refrigerant supply through the circulation is repeatedly.

By smooth circulation of the refrigerant, the electrode can be efficiently cooled and the temperature of the electrode can be easily controlled and controlled at a desired temperature required for surgery.

In addition, since the conductive second block to which the high frequency output conductor is bonded and the conductive first block are coupled to each other, the high frequency electrical energy supplied through the second block is conducted to the first block so that there is no insulating layer of the electrode. It is released to the tip to coagulate, diminish or remove the biological tissues, such as therapeutic lesions, to be operated in the portion where the electrode is inserted.

The heating action of the electrode by the high frequency is well known and is not the gist of the present invention. In the present invention, unlike the conventional art, the high frequency of the electrode is connected to the side of the conductive second block without directly connecting the high frequency output conductor to the electrode. It is characterized by supplying electrical energy. As a result, the joining and workability of the high frequency output wire becomes good, and the high frequency output wire can be connected more firmly. In addition, there is an advantage that can be easily bonded even if the fine wire is broken by any impact during use.

 In addition, the present invention is characterized in that for measuring the temperature of the electrode in the second block. Since the history of the technique of operation by high frequency electric energy is still small and various studies are in progress, it is still followed by installing the temperature sensor of the electrode close to the tip of the electrode where the high frequency is emitted. . It is very difficult and difficult to install the temperature sensor in the inner space of the fine electrode rod of about 0.5 ~ 03mm or the inside of the refrigerant inlet pipe, so that many defective products are produced when manufacturing the electrode.

However, in the present invention, since the temperature of the tip of the electrode, that is, the temperature of the electrode tip required for surgery, is limited to about 45 ° C. to 60 ° C., the difference between the temperature of the tip of the electrode and the temperature sensed in the second block is considered. Thus, the fact that the temperature of the tip of the electrode can be controlled by the temperature sensed on the second block side was confirmed through a number of experiments, and thus the temperature sensor was installed in the second block. By installing the temperature sensor in the second block, not only the installation workability is good, but also the conventional problem that the flow path is narrowed due to the occupancy of the temperature sensor in the internal space of the refrigerant inlet pipe, which is a microtube, is solved. .

In addition, the temperature sensor can be installed separately from the high-frequency output wire, but because the temperature sensor is fine, it is easy to be cut by external friction, so the high-frequency output wire with a hollow inside is adopted. The built-in sensor completes the electrical connection of the high-frequency output wire and the installation of the temperature sensor. In addition, the workability of the installation of the temperature sensor is good and the safety of the temperature sensor is guaranteed.

In addition, according to the present invention, since the first block and the second block are separated and combined, the production of electrodes can be easily performed for each block, and the blocks can be easily assembled to produce a large amount of high-quality electrodes more efficiently.

 In addition, even if a defective element occurs in a part of the manufacturing process of the electrode can be replaced by replacing only that part, the production yield is improved and can be produced more economically and cheaply.

In addition, the refrigerant conduits, the temperature sensing conductors, and the high frequency output conductors are doubled, respectively, which simplifies the structure and improves the convenience of handling and use.

In the present invention, the electrode block for high frequency surgery is assembled into a conductive first block having an electrode rod and a conductive second block having a refrigerant inlet tube, so that the blocks of the electrode are assembled in a separate manner. It can be manufactured to increase the production efficiency of the electrode and to provide a high-frequency surgical electrode with improved quality.

In addition, since the high frequency output wire with the temperature sensor is built into the side of the conductive second block, the high frequency output wire and the temperature sensor can be installed at the same time, and the safety of the temperature sensor is guaranteed, and the refrigerant flows in. Since there is no temperature sensor in the space of the pipe, temperature control of the electrode is easy by smooth high pressure circulation of the refrigerant.

In addition, since the inlet and outlet pipes of the refrigerant are double pipes, and the conductive wires and the high frequency output wires of the temperature sensing sensor are double insulated wires, the structure is simpler, and there are various effects that are easy to use and handle.

1 is a side view of the present invention, Figure 2 is an exploded cross-sectional view of each component of the present invention and Figure 3 is an assembled cross-sectional view of the present invention.

In the high frequency surgical electrode equipped with an electrode for emitting a high frequency, a cooling means for cooling the electrode, and a temperature sensor for sensing the temperature of the electrode, as shown in Figure 2, except for the tip (1t) for emitting a high frequency The conical hub 1b is formed so that the electrode rod 1d of the microtube coated with the insulating layer 1f which suppresses the high frequency emission is penetrated through the center of the conductive first block 1. It is fixed by). The rear end of the first block 1 through which the electrode 1d penetrates is provided with a concave inlet portion 1a having a screw groove 1s to which the second block is coupled, and an outer cylinder is provided on the outer circumferential surface of the first block 1. Coupling portion 1c having screw groove 1n to be engaged is provided.

An inlet tube 2b of a refrigerant made of a capillary tube inserted into the space of the electrode rod 1d penetrates through the center portion of the conductive second block 2 to the conduit portion 2c of the rear end portion of the second block 2. It is inserted into 2 d of outflow pipes contacted, and it is carried out as a double pipe. The front end of the second block (2) is provided with a projection (2a) having a screw groove (2s) coupled to the recessed portion (1a) of the screw groove (1s) of the first block (1s) and the second block The inside of (2) is provided with an outlet chamber (2e) of the refrigerant in which the refrigerant outlet pipe (2d) is in contact, the outlet portion (2a) of the second block (2) is an outlet hole for communicating with the outlet chamber (2e) (2h) Is penetrated, and a leakage preventing seal 2r is fitted in the protrusion 2a.

On one side of the second block 2, a high frequency output such that a temperature sensing sensor 3s interpolated in the hollow portion 3a in the high frequency output lead 3 is inserted into the second block 2 The conducting wire 3 is electrically connected to the side of the second block 2, and the conducting wire 3d of the temperature sensor 3s is insulated, and the hollow portion 3a inside the high frequency output lead 3 is insulated. Is induced in a double.

When the high frequency output wire 3 with the built-in temperature sensor 3s is bonded to the second block 2, the temperature sensor 3s is installed at the same time, so that the workability is higher than that of the conventional electrode. Good and also the safety of the temperature sensor 3s is ensured by the high frequency output lead 3. Therefore, the functional reliability of the high frequency surgical electrode can be increased by that much.

As shown in FIG. 3, the protrusion 2a having the screw groove 2s of the second block 2 is screwed into the screw groove 1s of the first block 1 to the second recess 2a. The refrigerant inlet pipe 2b provided in the block 2 is positioned at the center of the inner space of the electrode rod 1d provided in the first block 1 and is connected to the coupling portion 1c of the first block 1. The through hole (4h) provided at the rear end of the outer cylinder (4) by coupling the screw portion (4s) provided on the inner surface of the screw groove (1n) outer cylinder (4), the double pipe and the high frequency output wire of the refrigerant inlet and outlet pipes ( 3) and the conducting wire (3d) of the temperature sensor is constructed by the double conductor wire.

According to the present invention configured as described above, the refrigerant is directly supplied into the space of the electrode rod 1d by the circulation mechanism to the refrigerant inlet tube 2b connected to the refrigerant supply unit, and the refrigerant introduced into the space of the electrode rod 1d is the inlet tube ( 2b) flows into the outlet chamber 2e through the outlet hole 2h through the inner space of the electrode rod 1d around, and again the refrigerant flows out from the outlet chamber 2e to the refrigerant supply unit through the outlet tube 2d. The electrode rod 1d is cooled while being repeatedly circulated. At this time, since the refrigerant inlet pipe does not have a temperature sensor as in the prior art, the flow path is sufficiently secured, and since the inlet pipe is directly connected to the refrigerant supply unit without an outlet chamber in the middle of the flow path, the refrigerant is directly connected to the inside of the electrode space. By smoothly circulating, the electrode can be effectively controlled at a predetermined temperature.

On the other hand, a predetermined high frequency electrical energy is supplied to the conductive second block 2 through the high frequency output lead 3 connected to the high frequency power supply, and thus the first block coupled to the second block. Guide electrode 1d is led through (1). Since the insulating layer 1f is coated on the surface of the electrode rod 1d, high frequency radiation is emitted in a range limited to only the exposed tip 1t. It is heated while the temperature is raised by the high frequency electric energy emitted from the tip 1t of the electrode rod 1d inserted in the surgical treatment lesion. At this time, the actual temperature of the electrode is measured by the temperature sensor 3s connected to a temperature monitor (temperatuor monitor), so that the temperature of the electrode 1d is set to a predetermined temperature (about 45 ° C to 60 ° C). By controlling the temperature and the circulation speed of the refrigerant to be controlled ()) to maintain the electrode (1d) at a controlled temperature. Therefore, the protein of the tissue of the lesion to be surgically coagulated, reduced or eliminated by thermal deformation.

    If the electrode 1d is in contact with an external impact or pressure during use of the electrode, the first block 1 can be replaced and the second block 1 is blocked if the refrigerant inlet pipe 2b is blocked for some reason. 2) can be replaced.

1 is a side view of one embodiment of a high frequency surgical electrode of the present invention

Figure 2 is an exploded cross-sectional view showing the components of the present invention

Figure 3 is a cross-sectional view showing the assembly configuration of the present invention

Figure 4 is a cross-sectional view of a conventional high frequency surgical electrode

[Description of Signs of Important Parts of Drawing]

1: first block, 1a: indentation part, 1d: electrode, 1c: coupling part,

2: second block, 2a: protrusion, 2b: refrigerant inlet pipe,

2d: refrigerant outlet pipe, 2e: outlet chamber, 2h: outlet hole,

3: high frequency output wire, 3a: hollow part of wire, 3d: wire of temperature sensor,

3s: temperature sensor, 4: outer cylinder.

Claims (5)

In the high frequency surgical electrode provided with an electrode for emitting a high frequency, cooling means for cooling the electrode, and a temperature sensor for sensing the temperature of the electrode, A conductive first block is provided with a surgical electrode made of a microtubule that emits a high frequency wave, and an inflow pipe for refrigerant inserted into the space of the electrode is provided and coupled to the first block. A conductive second block; A high-frequency surgical electrode, characterized in that it is interpolated in the hollow inside of the second block is installed in contact with the high-frequency output wire in the second block and the outer tube coupled to the first block. 2. The first block (1) according to claim 1, wherein the first block (1d) is fixed by a conical hub (1b) so that the electrode rod (1d) penetrates through the center of the conductive first block (1). The rear end of the penetrated first block 1 is provided with a concave inlet portion 1a having a screw groove 1s to which the second block is coupled, and a screw groove to which an outer cylinder is coupled to the outer circumferential surface of the first block 1 ( High frequency surgical electrode, characterized in that the coupling portion (1c) having a 1n) is configured to couple the second block and the outer cylinder (4). The second block coupled to the first block of claim 1, wherein the inlet pipe (2b) of the refrigerant inserted into the space of the electrode (1d) is penetrated to the center of the conductive second block (2) It is inserted into the outflow pipe 2d which is in contact with the pipe joint 2c of the rear end of the block 2, and the recess of the screw groove 1s of the first block 1 is inserted into the front end of the second block 2. A protrusion 2a having a screw groove 2s coupled to (1a) is provided, and an inside of the second block 2 is provided with an outlet chamber 2e of a refrigerant in which a refrigerant outlet tube 2d is connected. High-frequency surgical electrode, characterized in that the protrusion (2a) of the second block (2) is formed through the outlet hole (2h) passing through the outlet chamber (2e). 3. The high temperature sensor 3s is interpolated into the hollow portion 3a of the high frequency output wire 3 so that the temperature sensor 3s is inserted into the second block 2. The output lead 3 is electrically connected to the side of the second block 2, and the lead 3d of the temperature sensor 3s is dually induced inside the high frequency output lead 3 in an insulated state. High frequency surgical electrode, characterized in that configured. The electrode of claim 1, wherein the electrode for high frequency surgery is screwed into the concave portion 1a of the screw groove 1s of the first block 1 and the screw groove 2s of the protrusion 2a of the second block 2, respectively. The refrigerant inlet pipe 2b provided in the second block 2 is located at the center of the inner space of the electrode rod 1d provided in the first block 1 and the coupling portion 1c of the first block 1 is provided. The threaded portion 4s of the outer cylinder 4 is coupled to the screw groove 1n, and is provided with a through hole 4h provided at the rear end of the outer cylinder 4, and the inlet pipe 2b and the outlet pipe 2d of the refrigerant, which are double pipes, A high frequency output electrode (3) consisting of a double wire and a conducting wire (3d) of the temperature sensor (3s) is formed, characterized in that the electrode for high-frequency surgery.

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