JP2003290248A - High-frequency treatment appliance - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high-frequency treatment appliance which has a sufficient solidification capability and can perform an incision when solidifying and incising a tissue by bipolar electrification. <P>SOLUTION: The high-frequency treatment appliance is equipped with an inserting part 17 which can be inserted into the body, a first electrode means (solidification electrodes 15 and 16) located on the top of the inserting part 17 and each having a first abutting part which can be abutted to an examinee body, a second electrode means (incision electrode 12) provided on the same outer surface as the first electrode means (solidification electrodes 15 and 16) and having a second abutting part which can be abutted to the examinee body, and insulating means (insulators 13 and 14) for electrically insulating the first electrode means (solidification electrodes 15 and 16) and the second electrode means (incision electrode 12), and the first electrode means is formed with two electrodes (solidification electrodes 15 and 16). <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a high-frequency treatment instrument.

[0002]

2. Description of the Related Art As a high-frequency treatment instrument used in endoscopic surgery, a hook electrode for performing coagulation and incision centering on a peeling operation of a living tissue is known.

For example, US Pat. No. 4,228,800,
US Pat. No. 5,542,945, US Pat.
No. 397 describes an example of a high-frequency treatment instrument for endoscopic surgery that can perform coagulation and incision of living tissue by bipolar current application.

[0004]

The above-mentioned US Pat. No. 4,
In the bipolar electrode shown in No. 228,800, as can be seen from the arrangement of electrodes in the treatment section and the overall configuration,
An incision that punctures the tissue can be made, but an incision that cuts the tissue cannot be made. Further, when the coagulation and the incision are alternately performed, the action of the electrodes to be incised during the incision operation is not stable, so that the tissue is easily attached to the surfaces of both electrodes. Therefore, the coagulation ability and the incision ability of the hook electrode are insufficient, and a particularly sufficient coagulation operation cannot be performed.

In the bipolar electrode working tip 2 shown in US Pat. No. 5,542,945, as can be seen from the shapes and sizes of the electrodes 5 and 6, coagulation treatment can be performed, but an incision operation can be performed. Can not.

Further, in US Pat. No. 5,556,897, as can be seen from the arrangement of electrodes and the overall structure, the cutting performance by the cutting electrode 702 is high, but a sufficient coagulation operation cannot be performed.

The present invention has been made in view of the above problems, and provides a high-frequency treatment instrument having a sufficient coagulation ability and capable of performing an incision operation when coagulating and incising a tissue by bipolar energization. To do.

[0008]

In order to achieve the above-mentioned object, a high-frequency treatment instrument according to the first aspect of the present invention is provided with an insertion part that can be inserted into the body and a distal end of the insertion part, which contacts the subject. A first electrode means having a contactable first contact portion, and a second electrode portion provided on the same outer surface as the first electrode means and capable of contacting the subject. Two electrode means and an insulating means for electrically insulating between the first electrode means and the second electrode means, wherein two electrodes are formed on the first electrode means. There is.

A second aspect of the present invention is the high-frequency treatment instrument according to the first aspect, wherein the two electrodes in the first electrode means are used as two poles for high-frequency current application, and the two electrodes are used for coagulation between the two electrodes. A current supply path for supplying a current is provided.

A third aspect of the present invention is the high-frequency treatment instrument according to the first aspect, further comprising current supply means for supplying a cutting current between the first electrode means and the second electrode means.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION In the high-frequency treatment tool according to this embodiment, in the bipolar hook electrode, the contact area with the tissue is widened when energizing the coagulation, and the incision portion is formed when energizing the incision. By making the tip of the electrode substantially triangular, the current density is concentrated on the triangular portion.

Furthermore, the tissue contact surface area of the two coagulation electrodes contacting the tissue is larger than the tissue contact surface area of the dissection electrode, and the energization path (coagulation electrode 1 and coagulation electrode 2) during the coagulation operation and the energization during the dissection operation. The output is switched by the path (bipolar between the coagulation electrodes 1 and 2 and one electrode).

Embodiments of the present invention will be described below in detail with reference to the drawings.

(First Embodiment) FIG. 1 is a diagram showing a system configuration for treating a subject such as a tissue by using the high-frequency treatment tool of the first embodiment. The bipolar hook electrode 1 as a high frequency treatment tool is connected to a high frequency oscillator 25 via a bipolar energizing cable 24-1. The high frequency oscillator 25 is provided with a display unit 26 for displaying the coagulation output value and a display unit 27 for displaying the incision output value. The high frequency oscillator 25 is connected to the foot switch 28 via a foot switch connection cable 24-2. The foot switch 28 is provided with a coagulation pedal 29 and an incision pedal 30.

Further, the high-frequency oscillator 25 is interlocked with the operation of the foot switch 28 so that coagulation and incision output can be performed between the electrodes described later by operating the coagulation pedal 29 and the incision pedal 30 of the foot switch 28. It has a switching device (not shown) for switching the output.

FIG. 2 is a diagram showing a schematic configuration of the high-frequency treatment tool according to the first embodiment. FIG. 3 is an enlarged view of the treatment portion 2 of the bipolar hook electrode 1 shown in FIG. Further, FIG. 4 is an enlarged view showing an AA cross section of the bipolar hook electrode 1 of FIG. Moreover, FIG. 5 is a BB cross-sectional view of the treatment portion 2 of FIG. 3.

As shown in FIG. 2, the high frequency treatment device of this embodiment is formed as a bipolar hook electrode 1,
A slender insertion part 17 to be inserted into a body cavity of a patient, a treatment part 2 arranged at the tip of the insertion part 17 for coagulating and incising living tissue, and an operating part connected to a proximal end part of the insertion part 17. 3 and 3. A high-frequency current is passed through each of the conductive members of the treatment section 2, whereby the treatment section 2 can be operated on the tissue to coagulate or incise the tissue.

On the other hand, on the base end side of the operating portion 3, there is a connector connecting portion 4 for attaching the bipolar energizing cable 24-1 having three conductive passages. The connector connecting portion 4 includes a first electrode contact 18 and a second electrode contact 1
9 and a third electrode contact 20, each electrode contact 18, 1
9 and 20 are insulated by insulating pipes 21, 22 and 23, respectively. Further, the first electrode contact 18 is the coagulation electrode 1
(15) The second electrode contact 1 electrically connected to (FIG. 5)
9 is electrically connected to the coagulation electrode 2 (16) (FIG. 5),
The third electrode contact 20 is electrically connected to the dissection electrode 12 (FIG. 5).

Further, as shown in FIG.
It is composed of a first conductive passage 8, a second conductive passage 9, a third conductive passage 10 as a conductive passage leading to each electrode of the treatment portion 2, and an insulating lumen 7 for insulating each of these conductive passages 8, 9, 10. The outer pipe 6 is further provided outside the insulating lumen 7.
And the insulating tube 5 are arranged.

The first conductive path 8 forms a conductive path to the first electrode contact 18 in the operating section 3 and a conductive path to the coagulation electrode 1 (15) (FIG. 5) in the treatment section 2. There is. Similarly, the second conductive passage 9 has a second electrode contact 19 and a solidification electrode 2
(16) A conductive path to (FIG. 5) is formed. Furthermore, the third conductive path 10 forms a third electrode contact 20 and a conductive path to the incision electrode 12 (FIG. 5).

Further, as shown in FIG.
Coagulation electrode 1 (15) for performing coagulation operations on tissues
And the coagulation electrode 2 (16) are arranged and each coagulation electrode 15,
Reference numeral 16 is an insulating material 1 (13) and an insulating material 2 as insulating means.
(14) maintains insulation. At the same time, the cutting electrode 12 is arranged between the insulating material 1 (13) and the insulating material 2 (14) in order to perform the cutting operation on the tissue. still,
One of the incision electrodes 12 (the left end in the figure) has a substantially triangular shape in order to increase the current density during incision energization.

The two coagulation electrodes 1 (15), 2 (1
6) constitutes the first electrode means, and the incision electrode 12 constitutes the second electrode means.

The operation of the above-described high-frequency treatment instrument will be described below. A case of coagulating a tissue using the bipolar hook electrode 1 of the present embodiment will be described. First, one end of the bipolar energizing cable 24-1 is connected to the connector connecting portion 4 of the bipolar hook electrode 1, and the cable 24-1
Is connected to the high frequency oscillator 25.

Next, as shown in FIG. 6A, the tissue 31
The coagulation electrode 1 (15) and the coagulation electrode 2 (1
During 6), solidification conduction is performed to solidify the tissue 31.

On the other hand, regarding the incision operation, as shown in FIG. 6B, as in the coagulation operation, the treatment portion 2 is brought into contact with, ie, pressed against, the tissue 31, and the incision electrode 12 and the coagulation electrode 1 ( 15) Using the coagulation electrode 2 (16) as one electrode, incision energization is performed between the electrodes to incise the tissue 31.
In addition, as the operation of the treatment section 2, incision energization is performed from a state before contacting the tissue 31, and the treatment section 2 is gradually pressed against the tissue 31 to improve the incision performance.

According to the above-described first embodiment, when the tissue is coagulated and dissected by the bipolar energization, the tissue has a sufficient coagulation ability and the dissection operation can be performed.

(Second Embodiment) FIG. 7 is a view for explaining a second embodiment of the present invention. Here, the incision electrode 12
Both ends (the left end portion and the right end portion in the figure) of each are substantially triangular in shape. In this case, the coagulation electrode 1 (1
5) When the tissue contact surface area in contact with the tissue in 2 (16) is S1 and the tissue contact surface area in contact with the tissue 31 in incision electrode 12 is S2, the relationship of S1> S2 is satisfied.

With this structure, in addition to pressing the treatment portion 2 against the tissue to make an incision, the tissue can be hooked to make an incision. Other actions and effects are similar to those of the first embodiment.

(Third Embodiment) FIG. 8 is a view for explaining a third embodiment of the present invention. In the third embodiment, the incision electrode 12 and the coagulation electrode 1 are arranged so that the contact area between the site of incision of the incision electrode 12 and the tissue is as small as possible.
The shapes and arrangements of (15) and 2 (16) are devised. Other actions are similar to those of the first embodiment.

(Fourth Embodiment) FIGS. 9A and 9B are views for explaining a fourth embodiment of the present invention. Figure 9
9B is a cross-sectional view taken along line CC of FIG. 9A. The fourth embodiment is an embodiment in which a spatula electrode 1'is used instead of the bipolar hook electrode 1 described above. By using such a spatula electrode 1 ', an electrode configuration similar to that of the first embodiment can be achieved. The operation and effect are similar to those of the first embodiment.

(Appendix) 1. A first having an insertion part that can be inserted into the body and a first contact part that is arranged at the tip of the insertion part and that can contact the subject
Electrode means, second electrode means provided on the same outer surface as the first electrode means and having a second contact portion capable of contacting the subject, and the first electrode means. An insulating means for electrically insulating the second electrode means from each other,
A high-frequency treatment instrument characterized in that two electrodes are formed on the first electrode means.

2. 1. The electrode surface area of the first electrode means in contact with the subject is larger than the electrode surface area of the second electrode means in contact with the subject. The high-frequency treatment instrument according to.

3. At least one of the surfaces of the second electrode means has a triangular shape. The high-frequency treatment instrument according to.

[0034]

EFFECTS OF THE INVENTION According to the present invention, when the tissue is coagulated and incised by bipolar current application, it has a sufficient coagulation ability,
Moreover, it is possible to provide a high-frequency treatment instrument that can perform an incision operation.

[Brief description of drawings]

FIG. 1 is a diagram showing a system configuration when a treatment is performed using the high-frequency treatment tool according to the first embodiment of the present invention.

FIG. 2 is a diagram showing a schematic configuration of a high-frequency treatment tool according to the first embodiment.

FIG. 3 is a treatment portion 2 of the bipolar hook electrode 1 shown in FIG.
It is a figure which expands and shows.

FIG. 4 is an enlarged view showing an AA cross section of the bipolar hook electrode 1 of FIG.

5 is a cross-sectional view taken along line BB of the treatment portion 2 in FIG.

FIG. 6 is a view for explaining the action of the high-frequency treatment tool.

FIG. 7 is a diagram for explaining the second embodiment of the present invention.

FIG. 8 is a diagram for explaining the third embodiment of the present invention.

FIG. 9 is a diagram for explaining the fourth embodiment of the present invention.

[Explanation of symbols]

1 Bipolar hook electrode 2 treatment department 3 operation part 4 Connector-connector 5 Insulation tube 6 Outer pipe 7 Insulation lumen 8 First conductive path 9 Second conductive passage 10 Third conductive passage 11 Operation grip 12 Incision electrode 13 Insulation material 1 14 Insulation material 2 15 Coagulation electrode 1 16 Coagulation electrode 2 17 Insert 18 1st electrode contact 19 Second electrode contact 20 3rd electrode contact 21 Insulated pipe 22 Insulated pipe 23 Insulated pipe 24-1 Bipolar energizing cable 24-2 foot switch connection cable 25 high frequency oscillator 26 Display for displaying coagulation output value 27 Display for displaying incision output value 28 foot switch 29 Coagulation pedal 30 incision pedal 31 organizations

Claims (3)

[Claims] 1. An insertion part that can be inserted into the body, and a first part that is arranged at the tip of the insertion part and that can abut against a subject.
A first electrode means having a contact portion, and a second electrode means having a second contact portion provided on the same outer surface as the first electrode means and capable of contacting the subject. An insulating means for electrically insulating between the first electrode means and the second electrode means, wherein the first electrode means is formed with two electrodes. High frequency treatment tool. 2. The two electrodes of the first electrode means are used as two poles for high-frequency current application, and a current supply path for supplying a current for coagulation is provided between the two electrodes. The high frequency treatment device according to claim 1. 3. A high-frequency treatment tool comprising current supply means for supplying a cutting current between the first electrode means and the second electrode means.