KR-20260063668-A - Hybrid electrosurgical device for use in endoscopy

KR20260063668AKR 20260063668 AKR20260063668 AKR 20260063668AKR-20260063668-A

Abstract

The present invention relates to a hybrid electrosurgical device for endoscopy that can be used in both unipolar and bipolar modes. To this end, the hybrid electrosurgical device for endoscopy according to the present invention comprises a cover tube forming the outer wall of a probe, an electrode receiving portion located in the internal space of the cover tube, a first electrode that is inserted into or withdrawn from the electrode receiving portion, a second electrode that has one end installed at the end of the cover tube and the other end installed along the inner surface of the cover tube, and an insulator surrounding the second electrode.

Inventors

황지영

Assignees

황지영

Dates

Publication Date: 20260507
Application Date: 20241030

Claims (4)

A cover tube forming the outer wall of the probe, and The electrode receiving portion located in the internal space of the above cover tube, and A first electrode that is introduced into or withdrawn from the electrode receiving portion, and A second electrode, one end of which is installed at one end of the cover tube and the other end of which is installed along the inner surface of the cover tube, and A hybrid electrosurgical device for an endoscope comprising an insulator surrounding the second electrode.
In paragraph 1, A hybrid electrosurgical device for an endoscope characterized in that when the first electrode is withdrawn from the electrode receiving portion and exposed to the outside of the cover tube, current flows out to the first electrode through the electrode receiving portion and flows into the second electrode through the human body.
In paragraph 1, A hybrid electrosurgical device for an endoscope characterized in that when the first electrode is introduced into the electrode receiving portion and enters the interior of the curve tube, current flows out from the second electrode and flows through the human body to a return pad attached to the human body.
In paragraph 1, A hybrid electrosurgical device for an endoscope characterized by the fact that when the first electrode is withdrawn from the electrode receiving portion and exposed to the outside of the cover tube, and the second electrode is disconnected, current flows out from the first electrode and flows through the human body to a return pad attached to the human body.

Description

Hybrid electrosurgical device for use in endoscopy The present invention relates to a hybrid electrosurgical device for endoscopes that can be used in both unipolar and bipolar modes. Monopolar surgical instruments are designed so that the current passes through the entire body and is recovered, requiring high voltage to be applied to the instrument. As a result, there is a risk that the high voltage applied during the procedure may cause thermal damage around the lesion. To overcome the limitations of unipolar surgical instruments, a bipolar surgical instrument that does not require a separate electrode (return pad) for recovering current has been developed. Bipolar surgical instruments have the advantage of minimizing thermal damage around the lesion, simplifying the procedure by eliminating the need for attaching and removing return pads, and minimizing the impact on the implant patient. However, currently, all electrosurgical instruments used in endoscopes utilize unipolar electrodes, which limits their use on implant patients. FIG. 1 is a drawing showing a hybrid electrosurgical device for an endoscope according to the present invention. FIG. 2 is a cross-sectional view of a hybrid electrosurgical device for an endoscope according to the present invention. FIG. 3 is a diagram showing the flow of current through the electrodes of a hybrid electrosurgical device for an endoscope according to the present invention. Figure 4 is a diagram showing the current distribution (density) in unipolar and bipolar states. FIG. 5 is a diagram showing various structures of an insulator according to the present invention. The objects, specific advantages, and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments in conjunction with the accompanying drawings. The terms used are defined with consideration of their functions in the present invention, and these may vary depending on the intent or convention of the user or a person skilled in the relevant technical field. Therefore, the definitions of these terms should be based on the content throughout this specification. FIG. 1 shows the external appearance of a hybrid electrosurgical device for an endoscope according to the present invention, FIG. 2 shows a cross-sectional view of a hybrid electrosurgical device for an endoscope, and FIG. 3 shows the flow of current through the electrodes of a hybrid electrosurgical device for an endoscope. Referring to FIGS. 1 to 3, the hybrid electrosurgical device for an endoscope according to the present invention is composed of a motion control unit (not shown) and a probe connected to the motion control unit and inserted into the human body. The operation control unit generates a constant voltage to apply current to the lesion through the probe. The probe is inserted into the human body to treat or remove the lesion. This specification describes in detail the structure of a probe that can be used as both a unipolar and a bipolar surgical instrument. Looking at the structure of the end portion of the entire probe, the outer wall of the probe is composed of a cover tube (10), and the internal space (12) of the cover tube (10) contains an electrode receiving portion (20). The first electrode (40) is composed of a loop-shaped electrode and is inserted or withdrawn through the electrode receiving portion (20). The second electrode (50) is externally installed at the end of the cover tube (10), with one end of the second electrode (50) exposed at the end of the cover tube (10) and the other end installed along the inner surface of the cover tube (10) and not exposed to the outside. In addition, an insulator (30) that surrounds the second electrode (50) is installed in the internal space (12) of the cover tube (10). The insulator (30) electrically disconnects the first electrode (40) and the second electrode (50), allowing them to be used as a positive electrode. Use of bipolar electrodes The first electrode (40), which is a snare-shaped electrode, and the second electrode (50), which is an end electrode, are each connected as electrodes to form a bipolar electrode, and can operate as an electrosurgical device. As shown in FIG. 3, a circuit is formed in which current is introduced from the first electrode (40), passes through the lesion, and then the current is recovered through the second electrode (50). As described above, an insulator (30) is placed inside the cover tube (10) to prevent direct connection of each electrode (40, 50) so that it can function as a positive electrode. Use of unipolar electrodes The first electrode (40) and the second electrode (50) can be independently used as unipolar electrodes to operate as a unipolar electrosurgical device. That is, the operator can select one of the first electrode (40) and the second electrode (50) as the electrode to which current is applied and use it as a unipolar electrosurgical device. Specifically, the