JP2012019846A - High frequency hemostatic forceps for endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide high frequency hemostatic forceps for endoscope which prevents bleeding on removing an electrode from living tissue.SOLUTION: In the high frequency hemostatic forceps for endoscope including a conductive metal wherein a pair of forceps cups 100 with bottom parts to function as high frequency electrodes for flowing high frequency current to living tissue are closably configured, an electric insulation coated portion 102 not to flow high frequency current and a non-electric insulation coated part 101 to flow the high frequency current are configured crossing on the contact portion in the forceps cups 100 to touch the living tissue, and the area ratio between the electric insulation coated portion and the non-electric insulation coated part is set within 1:4 to 3:4.

Description

  The present invention relates to a high-frequency hemostatic forceps for an endoscope that energizes and coagulates a living tissue by applying a high-frequency current to a pair of high-frequency electrodes sandwiching the living tissue, and in particular, bleeding from the living tissue when the high-frequency electrode is opened. The present invention relates to a high-frequency hemostatic forceps for an endoscope that can be prevented.

  In general, a high-frequency hemostatic forceps for an endoscope is a method in which a living tissue is sandwiched by a cup-shaped forceps in which a high-frequency electrode is arranged on an inner surface, and the high-frequency electrode is energized with a high-frequency current to cauterize and coagulate the living tissue. By reducing the area of the high-frequency electrode that touches the living tissue, a conductive metal is applied only to the outer edge of the forceps cup in order to prevent unnecessary tissue destruction by creating deep burns in the living tissue over a wide area. A forceps-type high-frequency treatment instrument has been proposed in which a wire is exposed and an electrically insulating coating is applied to the entire other part.

  In addition, as described in Patent Document 1 below, as a high-frequency hemostatic forceps for an endoscope that prevents the generation of unnecessary tissue destruction by creating deep burns in a wide range of living tissue, a pair of cup-shaped forceps pieces is used. There is a technique in which a plurality of serrated irregularities are formed on at least one of the opposing closing direction surfaces, an electrically insulating coating is applied to the bottom of the serrated irregularities, and conductivity is provided on the top.

JP 2009-297503 A

  Although the technique described in Patent Document 1 can perform hemostasis when a high-frequency electrode is exposed on the inner surface of a pair of cup-shaped forceps pieces and a living tissue is sandwiched between them, a living body is applied to the electrode on the inner surface of the cup-shaped forceps piece. The tissue mucous membrane is scorched, so that when the pair of cup-shaped forceps pieces are opened after the hemostasis operation is completed, the adherent part that has burned into the mucous membrane may be peeled off from the living tissue and may cause another bleeding. It was. This problem also applies to the endoscopic high-frequency hemostatic forceps for hemostasis of blood vessels with rod-shaped high-frequency electrodes.

  An object of the present invention is to solve the above-described problems of the prior art, and to provide a high-frequency hemostatic forceps for endoscope that can prevent bleeding from living tissue even when the forceps piece is opened after the hemostasis operation is completed. Is to provide.

In order to achieve the above object, the present invention provides a high-frequency endoscope for use in which a pair of cup-shaped forceps pieces made of a conductive metal and having a concave bottom portion functioning as a high-frequency electrode for supplying a high-frequency current to a living tissue can be opened and closed. In hemostatic forceps,
The bottom part of the contact part of the cup-shaped forceps piece that contacts the living tissue is divided into an electrically insulating coating part that does not pass the high-frequency current and a non-electrical insulating coating part that passes the high-frequency current and functions as a high-frequency electrode. The first feature is that it is configured as described above.

  Further, according to the present invention, in the high-frequency hemostatic forceps for endoscope according to the first feature, the area ratio between the electrically insulating coating portion and the non-electrically insulating coating portion is set in a range of 1: 4 to 3: 4. This is the second feature.

  Further, according to the present invention, in the high-frequency hemostatic forceps for endoscope according to the first or second feature, the cup-shaped forceps piece has an oval opening, and the non-electrically insulating coating portion is the long A third feature is that the bottom of the circular opening is configured to cross the cross.

  Further, the present invention is the endoscope high-frequency hemostatic forceps according to the first or second feature, wherein the cup-shaped forceps piece has an oval opening, and the electrically insulating coating portion is the oval. The fourth feature is that the bottom of the opening is crossed in a cross shape.

  Further, according to the present invention, in the high-frequency hemostatic forceps for endoscope according to the first or second feature, the cup-shaped forceps piece has an oval opening, and the electrically insulating coating portion is the long A fifth feature is that the circular opening is configured to cross the bottom in a lattice shape.

  Further, in the high-frequency hemostatic forceps for endoscope according to the first or second feature of the present invention, the cup-shaped forceps piece has an oval opening, and the non-electrically insulating coating portion is the A sixth feature is that the base is formed in a shape that crosses the bottom of the oval opening in a lattice pattern.

  Further, according to the present invention, in the high-frequency hemostatic forceps for endoscope according to the first or second feature, the cup-shaped forceps piece has an oval opening, and the electrically insulating coating portion is the long A seventh feature is that the bottom of the circular opening is formed in a concentric multiple track shape.

  Further, according to the eighth feature of the present invention, in the high-frequency hemostatic forceps for endoscope according to the seventh feature, the electrically insulating coating portion configured in the plurality of tracks is divided in the circumferential direction. To do.

  Further, according to the present invention, in the high-frequency hemostatic forceps for endoscope according to the first or second feature, the cup-shaped forceps piece has an oval opening, and the electrically insulating coating portion is the long A ninth feature is that the circular opening is formed in a plurality of lines that cross the bottom.

  Further, in the high-frequency hemostatic forceps for endoscope according to the first or second feature of the present invention, the cup-shaped forceps piece has an oval opening, and the non-electrically insulating coating portion is the A tenth feature is that the oval opening is formed in a plurality of circular shapes located in the bottom of the opening.

  Further, according to the present invention, in the endoscopic high-frequency hemostatic forceps having any one of the characteristics described above, the arrangement of the electrically insulating coating portion and the non-electrically insulating coating portion formed at the bottom of the pair of cup-shaped forceps pieces is different. This is an eleventh feature.

Furthermore, the present invention relates to a high-frequency hemostatic forceps for an endoscope that is configured to be capable of opening and closing a pair of rod-shaped forceps pieces made of a conductive metal and functioning as a high-frequency electrode that supplies a high-frequency current to a living tissue.
An electrical insulating coating portion that does not pass the high-frequency current and a non-electrical insulating coating portion that passes the high-frequency current are divided along the rod-shaped length direction at the contact portion of the rod-shaped forceps piece that contacts the living tissue. This is a twelfth feature.

  The high-frequency hemostatic forceps for endoscope according to the present invention includes an electrically insulating coating portion that does not pass the high-frequency current and a non-electrically-insulating coating portion that passes the high-frequency current at the bottom of the contact portion that contacts the living tissue of the forceps piece. The high-frequency electrode forceps are formed by dividing the portion of the living tissue that is cauterized and coagulated by applying a high-frequency current to the living tissue, and reducing the contact portion due to scorching between the high-frequency electrode and the living tissue. Bleeding can be prevented when opening the tissue to the living tissue.

1 is an external perspective view of a high-frequency hemostatic forceps for endoscope according to a first embodiment of the present invention. The figure for demonstrating the cup-shaped forceps piece by the 1st Embodiment of this invention. The figure for demonstrating the cup-shaped forceps piece by the 2nd Embodiment of this invention. The figure for demonstrating the cup-shaped forceps piece by the 3rd Embodiment of this invention. The figure for demonstrating the cup-shaped forceps piece by the 4th Embodiment of this invention. The figure for demonstrating the cup-shaped forceps piece by the 5th Embodiment of this invention. The figure for demonstrating the cup-shaped forceps piece by the 6th Embodiment of this invention. The figure for demonstrating the cup-shaped forceps piece by the 7th Embodiment of this invention. The figure for demonstrating the cup-shaped forceps piece by the 8th Embodiment of this invention. The figure for demonstrating the cup-shaped forceps piece by the 9th Embodiment of this invention. The figure for demonstrating the cup-shaped forceps piece by the 10th Embodiment of this invention. The figure for demonstrating the cup-shaped forceps piece by the 11th Embodiment of this invention. The external appearance perspective view of the high frequency hemostatic forceps for endoscopes by the 12th Embodiment of this invention. The external appearance perspective view of the high frequency hemostatic forceps for endoscopes by the 12th Embodiment of this invention. The figure for demonstrating the cup-shaped forceps piece by the 13th Embodiment of this invention. The figure for demonstrating the cup-shaped forceps piece by the 14th Embodiment of this invention. The figure for demonstrating the cup-shaped forceps piece by 15th Embodiment of this invention. The figure for demonstrating the cup-shaped forceps piece by 16th Embodiment of this invention. The figure for demonstrating the cup-shaped forceps piece by the 17th Embodiment of this invention.

Hereinafter, endoscopic high-frequency hemostatic forceps according to a plurality of embodiments of the present invention will be described with reference to the drawings.
First, as shown in FIG. 1, a high-frequency hemostatic forceps 20 for an endoscope according to the first embodiment includes a pair of forceps cups (cup-shaped forceps pieces) 100 made of a conductive metal and functioning as a high-frequency electrode, A support shaft 12 serving as an axis for opening and closing the forceps cup 100, a support frame 9 having a support portion for supporting an intermediate portion of the support shaft 12, and a connecting shaft 14 disposed at a distance from the support shaft 12. A driving arm 11 rotatably connected to the connecting shaft 14, a link mechanism 13 for opening and closing the pair of forceps cups 100 by driving the driving arm 11, and the support frame 9 are held. And a flexible sheath 2. The high-frequency hemostatic forceps 20 for endoscope is not shown, but an operation part is connected to the proximal end part (base end part) of the flexible sheath 2, and the operation part is operated to be flexible. When the operator slides the conductive operation wire passed through the sheath 2 in the longitudinal direction, the forceps cup 100 is opened / closed and energized, whereby a high-frequency current is supplied to the forceps cup 100 via the operation wire. Can be energized.

  The forceps cup 100 according to the present embodiment has a concave (cup-shaped) bottom portion that constitutes a contact portion that comes into contact with a living tissue in order to sandwich and store the outer periphery of the living tissue on the inner surface, and is shown in FIGS. 1 and 2. As described above, the cross-shaped non-electrical insulating coating portion 101 having conductive characteristics on the inner surface of the bottom portion, and the insulating electrical insulating property indicated by the cross-shaped hollow lines excluding the cross-shaped shape of the non-electrical insulating coating portion 101 A coating portion 102 and an electrically insulating coating portion 24 indicated by hatching are formed on the slope portions of the plurality of serrated irregularities 15 provided on the edge of the opening of the forceps cup 100, and an insulating electrical surface is formed on the outer peripheral surface side. The insulating coating portion 103 and the like (the hatched portion in the figure) are applied, and the non-electrically insulating coating portion 16 is applied to the top of the plurality of sawtooth uneven portions 15. Each of the electrically insulating coating portions is formed by coating the entire conductive forceps cup 100 with a nonconductive material such as a fluororesin, a ceramic, or a polyid resin, and evaporating the nonelectrically insulating coating portion using a laser beam. However, the present invention is not limited to this forming method, and the electrically insulating coating portion may be formed by printing or other manufacturing methods. The area ratio between the non-electrically insulating coating portion 101 and the electrically insulating coating portion 102 at the bottom of the forceps cup 100 is preferably in the range of 1: 4 to 3: 4. Since the high-frequency hemostatic forceps 20 for endoscope is energized with a high-frequency current through a conductive living tissue, the serrated uneven portion 15 has one non-electrically insulating coating when the forceps cup 100 is closed. The portions 16 and the other non-electrically insulating coating portion 16 may be alternately arranged without being opposed to each other, and this is the same at the bottom of the forceps cup.

  The forceps cup 100 of the high-frequency hemostatic forceps 20 for an endoscope according to the present embodiment has a non-electrically insulating coating portion other than the electrically insulating coating in the closed state (conduction of a white portion in the figure). A high-frequency current is applied to the portion), and the surface of the living tissue in contact with the energized portion is cauterized and solidified, so that a cross-shaped coagulation portion and a plurality of solidified portions formed by the non-electrically insulating coating portion 101 of the forceps cup 100 are formed on the outer peripheral surface of the living tissue. The solidified portion gradually spreads to the periphery while forming a dotted solidified portion formed by the contact portions of the top and bottom of the serrated uneven portion 15.

  Therefore, the high-frequency hemostatic forceps 20 for an endoscope according to the present embodiment applies a high-frequency current only to the non-electrically insulating coating portion without cauterizing / coagulating the entire outer peripheral surface of the sandwiched biological tissue, so that the biological tissue Since the current is passed through a narrow area in the range of 1/4 to 3/4 of the contact area with the body, the temperature of the living tissue rises in proportion to the square of the current density passed through the narrow area, and the outer periphery of the living tissue is quickly reached. The portion can be formed into a substantially cross-shaped sintered portion, and can be sintered into a so-called cross shape to stop bleeding from the living tissue and prevent bleeding from the living tissue when the forceps cup 100 is opened. can do. That is, according to the present embodiment, when the cauterized / coagulated part and the non-coagulated part are dispersed on the tissue surface, the high-frequency electrode and the living tissue are reduced in adhesion due to scorching, and the hemostasis to the affected part and the forceps cup 100 are opened. Can prevent bleeding. In other words, according to the above-described embodiment, by separating and dispersing the cauterized / coagulated portion of the living tissue in contact with the bottom of the forceps cup 100, the peeling force (adhering force) of the close contact portion due to scorching between the high-frequency electrode and the living tissue. Force) and the mucosa solidified can be prevented from being peeled off, and hemostasis to the affected area and bleeding when opening the forceps cup 100 can be prevented.

  The shapes of the non-electrically insulating coating portion and the electrically insulating coating portion formed on the bottom, which is the inner surface of the forceps cup 100, of the endoscope high-frequency hemostatic forceps 20 according to the present invention are not limited to the shapes of the above-described embodiments. However, other embodiments will be described next. In addition, it is the same as that of 1st Embodiment except the shape of the bottom part which is an inner surface.

  As shown in FIG. 3, the forceps cup 100 according to the second embodiment includes an electrically insulating coating portion 111 that does not pass a substantially cross-shaped high-frequency current indicated by diagonal lines on the bottom that is the inner surface of the cup, and the electrically insulating coating. A non-electrically insulating coating portion 112 that passes a cross-shaped hollow high-frequency current excluding the cross-shape of the portion 111, and by constructing the area ratio opposite to that of the first embodiment, The coagulation part can be increased.

  As shown in FIG. 4, the forceps cup 100 according to the third embodiment includes an electrically insulating coating portion 113 that does not pass a grid-shaped high-frequency current indicated by diagonal lines on the bottom that is the inner surface of the cup, and the electrically insulating coating portion. By applying the non-electrically insulating coating portion 114 for supplying a hollow high-frequency current excluding the lattice shape 113, the ablation / coagulation portion on the surface of the living tissue can be reduced as compared with the second embodiment.

  As shown in FIG. 5, the bottom, which is the inner surface of the forceps cup 100 according to the fourth embodiment, is a grid-shaped electrically insulating coating portion 115 indicated by diagonal lines with the grid width expanded in the third embodiment (FIG. 4). And a non-insulating non-insulating coating portion 116 with a hollow shape excluding the lattice shape of the electrically insulating coating portion 115, thereby producing a cauterized / coagulated portion on the surface of the living tissue as compared with the third embodiment. In addition, the ablation / coagulation portion on the surface of the living tissue can be arranged in the form of dots. The shapes of the electrically insulating coating portion and the non-electrically insulating coating portion may be a checkered pattern in which two colored squares (or rectangles) shown in the drawing are alternately arranged.

  As shown in FIG. 6, the inner surface of the forceps cup 100 according to the fifth embodiment is reversed from the electrically insulating coating portion and the non-electrically insulating coating portion of the third embodiment (FIG. 4), and white on the cup bottom. A non-electrically insulating coating part 117 having a blank grid shape and an insulating electric insulating coating part 118 indicated by oblique lines excluding the white grid shape of the non-electrical insulating coating part 117 are provided, and the area and area of the third embodiment By configuring the ratio in reverse, the cauterized / solidified portion on the surface of the living tissue can be formed into a mesh.

  As shown in FIG. 7, the bottom part, which is the inner surface of the forceps cup 100 according to the sixth embodiment, is a point-like non-electrically insulating coating part having an individual area smaller than that of the fourth embodiment (FIG. 5). By applying the electrically insulating coating portion 120 to the portion excluding 119 and the non-electrically insulating coating portion 119, fine dot-like cauterized / coagulated portions can be dispersed on the surface of the living tissue.

  As shown in FIG. 8, the inner surface of the forceps cup 100 according to the seventh embodiment excludes an electrically insulating coating part 121 in the form of a finely inclined grid on the bottom of the cup and a finely inclined line part of the electrically insulating coating part 121. By applying the non-electrical insulating coating portion 122 shown by white portions, the cauterized / solidified portion of the entire surface of the living tissue can be formed into a number of rhombus shapes.

  As shown in FIG. 9, the inner surface of the forceps cup 100 according to the eighth embodiment includes a plurality of concentric track-shaped electrical insulating coating portions 123 at the bottom of the cup, and a plurality of concentric track portions of the electrical insulating coating portions 123. By applying the non-electrical insulating coating portion 124 shown in white in the portion excluding white, the cauterized / solidified portion on the surface of the living tissue can be made into a track shape.

  As shown in FIG. 10, the inner surface of the forceps cup 100 according to the ninth embodiment has an electrically insulating coating portion in the form of a fine-line lattice as compared with the sixth embodiment (FIG. 7). By applying the grid-like electrically insulating coating portion 125 and the non-electrically insulating coating portion 126 shown in fine white outline excluding the electrically insulating coating portion 125, cauterization / coagulation of the entire surface of the living tissue is performed. The portion can be made into a fine grilled shape.

  As shown in FIG. 11, the inner surface of the forceps cup 100 according to the tenth embodiment has a linear electric insulating coating portion 127 extending in the lateral direction in FIG. 11, and white portions excluding the electric insulating coating portion 127. By applying the rectangular plate-shaped non-electrically insulating coating portion 128 extending in the lateral direction, the cauterized / solidified portion of the entire surface of the living tissue can be formed into a fine plate wire shape.

  As shown in FIG. 12, the inner surface of the forceps cup 100 according to the eleventh embodiment includes a plurality of intermittent concentric track-shaped electrical insulating coating portions 129, and an intermittent multiple concentric track-shaped electrical insulating coating portion 129. By applying the non-electrically-insulating coating portion 130 having a white shape excluding white, it is possible to form a plurality of track-shaped cauterized / solidified portions intermittently on the entire surface of the living tissue.

  In the above-described embodiment, the pair of forceps cups has been described with an example in which an electrically insulating coating portion and a non-electrically insulating coating portion are provided at the bottom, but the pair of forceps cups is electrically insulated. Cups having different arrangements of the conductive coating portion and the non-electrically insulating coating portion (FIGS. 2 to 12) may be combined. In particular, by forming a pair of electrodes by combining the forceps cup shown in FIG. 2 and the forceps cup shown in FIG. 3, the entire inside of the cup forms a cauterization / coagulation part different from the living tissue surface in two parts, The adhesive force with the mucous membrane is also reduced, and the cup and the mucosa can be easily detached, and bleeding from the living tissue can be prevented even when the forceps piece is opened after the hemostasis operation is completed. The same applies to the embodiments described later.

  In the above-described embodiment, the endoscopic high-frequency hemostatic forceps having a cup-shaped forceps cup that accommodates a lump of living tissue has been described. However, the present invention is not limited to the forceps cup, and is a rod-shaped high-frequency forceps. The twelfth embodiment can be applied to an endoscopic high-frequency hemostatic forceps that clamps a blood vessel or the like with an electrode to stop hemostasis.

  As shown in FIGS. 13 and 14, the high-frequency hemostatic forceps for endoscope according to the twelfth embodiment is composed of a conductive metal and functions as a high-frequency electrode, and a pair of rod-shaped forceps 30 that opens and closes the rod-shaped forceps 30. A support shaft 9 that has a support portion that supports the intermediate portion of the support shaft 12, a connecting shaft 14 that is spaced apart from the support shaft 12, and the support frame body. 9 and the flexible sheath 2 and others. The high-frequency hemostatic forceps for endoscope has an operation portion connected to the proximal end portion (base end portion) of the flexible sheath 2 in the same manner as the high-frequency hemostatic forceps for endoscope shown in FIG. The conductive operation wire passed through the flexible sheath 2 is opened and closed by sliding the operator in the longitudinal direction, and when energized, between the pair of rod-shaped forceps 30 via the operation wire. A high-frequency current can flow.

  In particular, the rod-shaped forceps 30 according to the present embodiment alternately arranges the electrically insulating coating portions 42 and the non-electrically insulating coating portions 41 on the pair of electrode surfaces 31 that constitute the contact portion that comes into contact with the living tissue, thereby generating a high frequency current. Can be formed by dividing the broken-line cauterized / coagulated portion on the surface of the living tissue, and can prevent bleeding from the living tissue when the bar-shaped forceps 30 is opened. Further, since the bar-shaped forceps 30 is supplied with a high-frequency current through conductive living tissue, one non-electrically insulating coating part 41 and the other non-electrically-insulating coating part are in a state where the bar-shaped forceps 30 are closed. 41 may be arranged alternately instead of facing each other.

  Furthermore, the shapes of the electrically insulating coating portion and the non-electrically insulating coating portion provided on the bottom which is the inner surface of the forceps cup 100 of the first to eleventh embodiments described above are the same as those described in the previous embodiment. As shown in FIG. 15, a plurality of circular non-electrically insulating coating portions 131 having a width are arranged on the electrically insulating coating portion 132, or as shown in FIG. A non-electrical insulating coating part 133 formed of a radially extending dividing line is arranged on the electric insulating coating part 134, or as shown in FIG. The conductive coating portion 135 is disposed on the electrically insulating coating portion 136, or a plurality of concentric electrical insulating coating portions 137 are non-electrically insulating as shown in FIG. As shown in FIG. 19, a wide and divided circular electrically insulating coating portion 140 may be disposed on the non-electrically insulating coating portion 139 shown in white as shown in FIG. .

  As described above, the endoscopic high-frequency hemostatic forceps according to each embodiment of the present invention includes a non-electrically insulating coating portion and an electrically insulating coating portion having a predetermined area ratio on the forceps that are high-frequency electrodes, By applying a high-frequency current to the living tissue to disperse the cauterized / solidified part and the non-cauterized / coagulated part on the tissue surface, and by reducing the adherent part of the high-frequency electrode and the living tissue being burnt, It is possible to prevent bleeding due to burning adhesion when opening from a living tissue.

2 Flexible sheath 9 Support frame 11 Drive arm 12 Support shaft 13 Link mechanism 14 Connection shaft 15 Serrated uneven portion 20 High-frequency hemostatic forceps 30 for endoscope 30 Rod-shaped forceps 100 Forceps cup 16, 101 Non-electrically insulating coating portion 24 , 102, 103 Electrically insulating coating

Claims (12)

In a high-frequency hemostatic forceps for an endoscope configured to be able to open and close a pair of cup-shaped forceps pieces made of a conductive metal and having a concave bottom portion that functions as a high-frequency electrode for supplying a high-frequency current to living tissue,
The bottom part of the contact part of the cup-shaped forceps piece that contacts the living tissue is divided into an electrically insulating coating part that does not pass the high-frequency current and a non-electrical insulating coating part that passes the high-frequency current and functions as a high-frequency electrode. A high-frequency hemostatic forceps for an endoscope characterized by being configured as described above.   The high-frequency hemostatic forceps for endoscope according to claim 1, wherein an area ratio between the electrically insulating coating portion and the non-electrically insulating coating portion is set in a range of 1: 4 to 3: 4.   The cup-shaped forceps piece has an oval opening, and the non-electrically insulating coating portion is formed in a shape that crosses the bottom of the oval opening in a cross shape. The high-frequency hemostatic forceps for endoscope according to 1 or 2.   The cup-shaped forceps piece has an oval opening edge, and the electrically insulating coating portion is configured to cross a bottom in the oval opening in a cross shape. A high-frequency hemostatic forceps for an endoscope having a second feature. The cup-shaped forceps piece has an oval opening, and the electrically insulating coating portion is configured in a shape that crosses the bottom in the oval opening in a lattice shape. A high-frequency hemostatic forceps for an endoscope having the first or second feature.   The cup-shaped forceps piece has an oval opening, and the non-electrically insulating coating portion is configured to cross the bottom of the oval opening in a lattice shape. A high-frequency hemostatic forceps for an endoscope having the first or second characteristics.   The cup-shaped forceps piece has an oval opening, and the electrically insulating coating portion is formed in a concentric multi-track shape with a bottom in the oval opening. The high-frequency hemostatic forceps for endoscope according to 1 or 2.   The high-frequency hemostatic forceps for endoscope according to claim 7, wherein the electrically insulating coating portion configured in a plurality of track shapes is divided in a circumferential direction.   The cup-shaped forceps piece has an oval opening, and the electrically insulating coating portion is configured in a plurality of lines that cross the bottom of the oval opening. Item 3. The high-frequency hemostatic forceps for endoscope according to Item 1 or 2.   The cup-shaped forceps piece has an oval opening, and the non-electrically insulating coating portion is configured in a plurality of circles located in the bottom of the oval opening. The endoscopic high-frequency hemostatic forceps according to claim 1 or 2.   11. The structure according to claim 1, wherein the electrical insulating coating portion and the non-electrical insulating coating portion configured on the bottom of the pair of cup-shaped forceps pieces are configured to be different in arrangement. Endoscopic high-frequency hemostatic forceps. In a high-frequency hemostatic forceps for an endoscope that is configured to be capable of opening and closing a pair of rod-shaped forceps pieces made of a conductive metal and functioning as a high-frequency electrode that supplies a high-frequency current to living tissue,
The non-electrically insulating coating portion that does not pass the high-frequency current and the electrically insulating coating portion that passes the high-frequency current are separated along the rod-shaped length direction at the contact portion of the rod-shaped forceps piece that contacts the living tissue. An endoscopic high-frequency hemostatic forceps characterized by being made.

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