KR20250064237A - Electrode surgical instrument for endoscopic spinal surgery - Google Patents

Abstract

The present invention relates to a ball-type electrosurgical device for endoscopic spinal surgery, and more specifically, to a ball-type electrosurgical device for endoscopic spinal surgery that enables simultaneous cauterization of tissue and injection or suction of a drug, thereby ensuring surgical convenience by eliminating cross-use of a cauterization device and a device for injection or suction of a drug during the surgical process, and further ensuring surgical safety and accuracy and minimizing surgical trauma after surgery.

Description

{Electrode surgical instrument for endoscopic spinal surgery}

The present invention relates to a ball-type electrosurgical device for endoscopic spinal surgery, and more specifically, to a ball-type electrosurgical device for endoscopic spinal surgery that enables simultaneous cauterization of tissue and injection or suction of a drug, thereby ensuring surgical convenience by eliminating cross-use of a cauterization device and a device for injection or suction of a drug during the surgical process, and further ensuring surgical safety and accuracy and minimizing surgical trauma after surgery.

The spine is a bony structure that forms the spinal column. In fetal infants, it is composed of 33 vertebrae: 7 cervical vertebrae, 12 thoracic vertebrae, 5 lumbar vertebrae, 5 sacral vertebrae, and 4 coccyxes. However, in adults, the 5 sacral vertebrae and 4 coccyxes fuse into one to form the sacrum and coccyx, making a total of 26 vertebrae. It supports the head above and is connected to the pelvis below, and is a bony structure that exists between them. It connects the skull to the pelvic bones to form a central axis, supports the body, maintains balance, and protects the spinal cord.

These vertebrae degenerate with age, or the strength of the bones decreases due to external factors, causing many diseases such as disc damage, spinal compression fractures, osteoporosis, and spinal stenosis.

As an invasive surgical device for treating the aforementioned spinal disease, the catheter is composed of an insertion tube that is inserted through the tailbone and serves as a passage for injecting drugs, a main body that is connected to one end of the insertion tube and controls the direction in which the insertion tube is inserted, and a piston that is connected to the main body and injects drugs into the spine through the insertion tube.

Conventional catheters with the above configuration have many problems, such as the injection of a drug backflowing when continuous pressure is not applied to the piston, causing spinal surgery to take a long time, causing pain to the patient and fatigue to the surgeon, and greatly reducing the efficiency and productivity of spinal surgery.

In addition, during spinal surgery, when the surgical targeting site becomes blinded due to bleeding in the soft tissue around the spine, the exact surgical site cannot be identified with the naked eye. In this case, it is necessary to perform hemostasis by rapid cauterization of the bleeding site simultaneously with the injection or suction of a drug solution. However, since conventional catheters do not have this cauterization function, there was a problem that a dedicated device for cauterization had to be inserted back into the body.

Registered patent 10-1227635

The present invention has been created to solve the above-mentioned problems of the prior art by taking into consideration the above-mentioned problems, and to provide a ball-type electrosurgical device for spinal endoscopic surgery that enables simultaneous cauterization of tissue and injection or suction of a drug, thereby ensuring surgical convenience by eliminating cross-use of a cauterization device and a device for drug injection or suction during the surgical process, and further ensuring surgical safety and accuracy and minimizing surgical trauma after surgery.

The present invention provides a means for achieving the above object, comprising: a catheter having an outer circumferential surface covered with an insulator, wherein a passive electrode is formed as one end of a shaft exposed from the insulator; an active electrode coupled to one end of the shaft; and an insulating core disposed between the passive electrode and the active electrode; wherein the active electrode comprises: an electrode rod inserted into the insulating core to a predetermined depth; and a spherical electrode ball formed at an end of the electrode rod.

In addition, the insulating core is characterized in that a liquid jetting port for jetting a liquid is formed.

In addition, it is characterized by further including a passive connecting wire electrically connecting the high-frequency generator and the second shaft; and an active connecting wire electrically connecting the high-frequency generator and the active electrode.

In addition, it is characterized by further including a fluid moving pipe connected to the liquid discharge port of the insulating core.

In addition, the insulating core is characterized in that a tissue covering is formed protrudingly.

The present invention enables simultaneous tissue ablation and drug injection or aspiration, thereby ensuring surgical convenience by eliminating cross-use of a cauterization device and a device for drug injection or aspiration during the surgical process, and further provides the advantageous effects of ensuring surgical safety and accuracy and minimizing surgical trauma after surgery.

Figures 1 and 2 are drawings showing the main configuration of a ball-type electrosurgical device for spinal endoscopic surgery according to the present invention.
FIG. 3 is a drawing showing the active electrode in the ball-type electrosurgical device for spinal endoscopic surgery illustrated in FIG. 1 in a disassembled state.
Figure 4 is a drawing illustrating an active electrode.
Figure 5 is a drawing schematically illustrating a cross-sectional configuration of a ball-type electrosurgical device for spinal endoscopic surgery illustrated in Figure 1.
Figures 6 and 7 are drawings illustrating a second embodiment of a ball-type electrosurgical device for spinal endoscopic surgery according to the present invention.
FIG. 8 is a drawing showing the active electrode in the ball-type electrosurgical device for spinal endoscopic surgery illustrated in FIG. 6 in a disassembled state.
Figure 9 is a drawing schematically illustrating a cross-sectional configuration of a ball-type electrosurgical device for spinal endoscopic surgery illustrated in Figure 6.

The above-described objects, features and advantages of the present invention will become more apparent through the following examples with reference to the accompanying drawings. The specific structural and functional descriptions below are merely exemplified for the purpose of explaining the embodiments according to the concept of the present invention, and the embodiments according to the concept of the present invention may be implemented in various forms and should not be construed as being limited to the embodiments described in this specification.

Since embodiments according to the concept of the present invention can have various changes and can take various forms, specific embodiments are illustrated in the drawings and described in detail in the present specification. However, this is not intended to limit embodiments according to the concept of the present invention to specific disclosed forms, but should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention.

The terms first and/or second, etc. may be used to describe various components, but the components are not limited to the terms. The terms are only intended to distinguish one component from other components, for example, without departing from the scope of the invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

When it is said that a component is "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components in between. On the other hand, when it is said that a component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between. Other expressions used to describe the relationship between components, such as "between" and "directly between" or "adjacent to" and "directly adjacent to", should be interpreted similarly.

The terminology used herein is only used to describe particular embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. It should be understood that the terms "comprises" or "has" as used herein specify that there is a feature, number, step, operation, component, part, or combination thereof implemented, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms defined in commonly used dictionaries, such as those defined in common usage, should be interpreted as having a meaning consistent with the meaning they have in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

Before describing the invention, it is to be noted that the ball-type electrosurgical device for spinal endoscopic surgery according to the present invention can be utilized for various operations, such as not only cauterization (cauterization) such as tissue incision and hemostasis during spinal surgery, but also various examinations, discharge of accumulated matter in body cavities or various organs, suction of irrigation fluid for cleansing, measurement of cardiovascular dynamics or central venous pressure, and injection of drugs such as contrast agents.

FIGS. 1 and 2 are drawings illustrating the main configuration of a ball-type electrosurgical device for spinal endoscopic surgery according to the present invention, FIG. 3 is a drawing illustrating an active electrode (20) in the ball-type electrosurgical device for spinal endoscopic surgery illustrated in FIG. 1 in an exploded state, FIG. 4 is a drawing illustrating an active electrode (20), FIG. 5 is a drawing schematically illustrating a cross-sectional configuration of the ball-type electrosurgical device for spinal endoscopic surgery illustrated in FIG. 1, FIGS. 6 and 7 are drawings illustrating a second embodiment of a ball-type electrosurgical device for spinal endoscopic surgery according to the present invention, FIG. 8 is a drawing illustrating an active electrode (20) in the ball-type electrosurgical device for spinal endoscopic surgery illustrated in FIG. 6 in an exploded state, and FIG. 9 is a drawing schematically illustrating a cross-sectional configuration of the ball-type electrosurgical device for spinal endoscopic surgery illustrated in FIG. 6.

The ball-type electrosurgical device for spinal endoscopic surgery according to the present invention can be broadly defined as including a catheter (10), an active electrode (20), an insulating core (30), a high-frequency generator (not shown), a passive connecting wire (40), an active connecting wire (50), and a fluid transport tube (60).

First, the catheter (10) is configured to be inserted into a lesion site within the body during surgery and is detachably provided on one end of a handpiece (not shown). When the surgery is over, it can be removed from the handpiece and discarded or reattached to the handpiece after washing or sterilization.

More specifically, the catheter (10) includes a tubular shaft (12) made of a conductive material, the outer surface of the shaft (12) being covered by an insulator (13), and a passive electrode (11) formed as one end of the shaft (12) exposed from the insulator (13).

In the case of the insulator (13), the shaft (12) can be covered, but a part of it is exposed to the outside to provide an electric stimulus to the lesion area.

At this time, the portion of the shaft (12) exposed from the insulator (13) is called a passive electrode (11). The active electrode (20) and passive electrode (11) mentioned in this description may be either an anode or a cathode depending on convenience.

The active electrode (20) and the passive electrode (11) can be electrically separated through an insulating core (30).

The shaft (12) can be electrically connected to the passive terminal of the high-frequency generator through a passive connecting wire (40) wired inside the catheter (10).

Next, the active electrode (20) is coupled to an insulating core (30) extended to one end of the shaft (12), and at this time, the active electrode (20) can be electrically connected to the active terminal of the high-frequency generator through an active connecting wire (50) wired inside the catheter (10).

The high-frequency generator is responsible for applying high-frequency alternating current to a catheter (10) coupled to a handpiece to activate a high-frequency area around the catheter (10).

The high-frequency generator can adopt the concept of a high-frequency generator widely used in general electrical surgery in the line that generates high-frequency alternating current, and at this time, an active connection wire (50) and a passive connection wire (40) are connected to the active terminal and passive terminal of the high-frequency generator, respectively, so that high-frequency alternating current can be supplied to the active electrode (20) and the passive electrode (11).

Accordingly, when both the active electrode (20) and the passive electrode (11) are in contact with the target lesion area and electrical energy is applied from a high-frequency generator, an alternating current in the high-frequency range (200 to 1200 kHz) is transmitted between the active electrode (20) and the passive electrode (11). In the process of transmitting this alternating current, frictional energy caused by the vibration of ions increases the temperature of living tissues such as blood vessels and tumors, thereby inducing coagulation necrosis, thereby occluding a bleeding blood vessel or cauterizing a tumor.

Meanwhile, when performing high-frequency ablation using a monopolar electrode, there is the inconvenience of having to attach a grounding pad to the patient, and above all, there is the problem of affecting other major blood vessels or tissues accompanying the blood vessel to be occluded because the current transmission path from the electrode to the grounding pad is long.

However, when a bipolar electrode is used as in the present invention, a local transmission path is formed only between the active electrode (20) and the passive electrode (11), so there is an advantage in that no side effects occur in other tissues or blood vessels.

The specific structure of the active electrode (20) will be described later.

Next, an insulating core (30) is placed between the passive electrode (11) and the active electrode (20) to insulate each other and, in particular, to support the active electrode (20).

That is, the active electrode (20) spaced apart from the passive electrode (11) can be supported by the insulating core (30).

The insulating core (30) is made entirely of insulating material and prevents short circuit between the active electrode (20) and the passive electrode (11).

A coupling hole (31) can be formed along the axial direction in the insulating core (30), and an active electrode (20) can be inserted into this coupling hole (31).

In addition, a liquid jet port (32) may be formed at an eccentric point from the coupling hole (31) in the insulating core (30), and a fluid movement pipe (60) may be directly connected to the liquid jet port (32).

The fluid transport tube (60) is connected to a separate fluid injection device to provide a passage for injecting fluid into the body around the active electrode (20), or conversely, is connected to a separate suction device to provide a passage for suctioning and expelling substances from the body.

Fluids required for surgery, such as saline solution or alcohol, can be transferred through the fluid transfer tube (60).

The fluid transport tube (60) can be connected integrally with the insulating core (30) and routed inside the catheter (10), so that when the catheter (10) is removed from the handpiece after the surgery is completed, it can be removed integrally with the catheter (10).

The fluid transport tube (60) is formed to extend across the inside of the catheter (10) to the insulating core (30), so that it has a completely sealed structure inside the catheter (10), and thus is not exposed to the body during surgery. In addition, even in the case of fluid flowing in the fluid transport tube (60), it is sealed in the fluid transport tube (60) so that it does not leak out into the inside of the catheter (10) and can be injected into the body or discharged from the body.

One end of the fluid transport pipe (60) may be connected to the liquid injection port (32) and the other end may be directly connected to an injection device or a suction device. In the case of an embodiment where the fluid transport pipe (60) is directly connected to the injection device, when a liquid is injected into the fluid transport pipe (60), the fluid is pressurized to the area around the active electrode (20) and flows out to the area around the active electrode (20) so that it can be injected into the body.

The insulating core (30) is provided with a tissue shield (33) formed in a protruding manner so that the active electrode (20) can directly contact the body tissue, preferably the nerves, during the surgical procedure, thereby minimizing nerve damage caused by high frequency applied to the nerves or pain during the surgical procedure.

Next, the active electrode (20) can be broadly exemplified as including an electrode rod (21) and an electrode tip.

First, the electrode rod (21) is exemplified as a rod structure that is inserted to a certain depth into the insulating core (30), preferably into the joining hole (31) of the insulating core (30).

At this time, the active connecting wire (50) can be inserted into the coupling hole (31) to a certain depth to form a contact point with the electrode rod (21) placed in the coupling hole (31). Accordingly, the electrode tip is electrically connected to the high-frequency generator.

That is, in this embodiment, a structure is provided in which an alternating current can be applied to the electrode ball (22) without a specially bent conductor by connecting a straight active connecting conductor (50) and an electrode rod (21) to each other inside an insulating core (30) without bending the conductor.

The electrode ball (22) is a spherical structure formed at the end of the electrode rod (21) and is a tip configuration that actually forms a contact point with body tissue.

When the electrode ball (22) comes into contact with hard tissue such as bone, it is desirable to have a smooth spherical shape so that it glides more smoothly on the surface of the bone with an irregular surface structure, and does not cause excessive frictional stimulation beyond the level of treatment or, worse, damage to the bone.

In summary, the present invention enables simultaneous cauterization of tissue and injection or suction of a drug, thereby ensuring surgical convenience by eliminating cross-use of a cauterization device and a device for drug injection or suction during the surgical process, and further provides the advantageous effects of ensuring surgical safety and accuracy and minimizing surgical trauma after surgery.

The embodiments of the present invention described above are merely exemplary, and those skilled in the art will readily appreciate that various modifications and equivalent other embodiments are possible from the embodiments. Therefore, it will be readily understood that the present invention is not limited to the forms mentioned in the detailed description above. Accordingly, the true technical protection scope of the present invention should be determined by the technical idea of the appended claims. In addition, the present invention should be understood to include all modifications, equivalents, and substitutes within the spirit and scope of the present invention defined by the appended claims.

10: Catheter
11: Passive electrode
12: Shaft
13: Insulator
20: Active electrode
21: Electrode rod
22: Electrode ball
30: Insulating core
31: Combination hole
32: Liquid nozzle
33: Organizational Barrier
40: Passive connecting wire
50: Active connecting wire
60: Fluid transport tube

Claims (5)

A catheter having an outer surface covered with an insulator, and a passive electrode formed at one end of the shaft exposed from the insulator;
an active electrode coupled to one end of the above shaft; and
It includes an insulating core arranged between the above passive electrode and the active electrode;
The above active electrodes are,
An electrode rod inserted into the insulating core to a certain depth; and
A ball-type electrosurgical device for spinal endoscopic surgery, characterized by including a spherical electrode ball formed at the end of the electrode rod. In claim 1,
A ball-type electrosurgical device for spinal endoscopic surgery, characterized in that a liquid jet port for jetting a liquid is formed in the insulating core. In claim 1,
A passive connecting wire electrically connecting the high frequency generator and the second shaft; and
A ball-type electrosurgical device for endoscopic spinal surgery, characterized in that it further includes an active connecting wire for electrically connecting a high-frequency generator and the active electrode. In claim 2,
A ball-type electrosurgical device for spinal endoscopic surgery, characterized in that it further includes a fluid transport tube connected to the liquid outlet of the insulating core. In claim 1,
A ball-type electrosurgical device for spinal endoscopic surgery, characterized in that a tissue shield is protrudingly formed on the above insulating core.

Images