JP2507871Y2 - Electrosurgical device electrode - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrosurgical instrument for cutting and coagulating a living tissue by a high frequency current, and more particularly to an electrode for the electrosurgical instrument.

[0002]

2. Description of the Related Art Conventionally, abdominal surgery such as cholecystectomy has been performed by laparotomy. However, laparotomy is a heavy burden on both the patient and the operator, and especially the operation time of the patient is prolonged. However, there are various problems such as pain after surgery and prolongation of hospitalization days, and cosmetically, the scars after surgery are large.

A surgical operation using a laparoscope, which is a type of endoscope, was created to address the above-mentioned problems. As shown in FIG. 7, normally, four holes are opened in the abdomen of the patient, carbon dioxide gas is fed into the abdominal cavity to inflate the abdomen, and the trocar 22 having a tubular shape with an inner diameter of 0.5 to 1.2 cm is formed into four. The main puncture is performed, a laparoscope or a surgical tool is inserted from the trocar 22, and the operation is performed while monitoring the inside of the abdominal cavity with a TV monitor or the like.

An electrosurgical instrument is often used as the surgical instrument. The electrosurgical instrument is one in which a high-frequency current is caused to flow from an electrode at a tip end to a living tissue, and the living tissue is incised and coagulated by heat generated.

The electrode attached to the tip of the electrosurgical instrument is
As shown in FIG. 4 according to the purpose of the treatment, the tip electrode portion for performing incision and coagulation forms a spatula-shaped portion 24, and the spatula-shaped portion 24 mainly applies high frequency to tissues such as muscle and fat in the abdominal cavity. It is incised and solidified by utilizing the heat generation effect of electric current. That is, in the case of incision, the spatula-shaped portion 24 is pushed (pulled) along the muscle or fat tissue while being cut open so that the spatula-shaped portion 24 is burnt out, and the incision is made as if it was cut open with a scalpel. Further, the electrode shown in FIG. 5 has a curved portion 26 in which a distal end portion to be treated is formed by bending a cylindrical tube into a substantially J shape.
As shown in FIG. 6, the mucous membrane in the abdominal cavity or fibrous tissue 28 is hooked on the inside of the curved portion 26 and the tissue 28 is cut by utilizing the heat generation effect of the high frequency current.

[0006]

However, as described above, muscles, fats, mucous membranes, fibrous tissues and the like are mixed in the abdominal cavity, and the operator has an electrode having a shape suitable for the tissue to be incised during the operation. I had to choose and replace it to perform surgery. At this time, there are problems that it takes time to replace the electrodes and that carbon dioxide gas filled in the abdominal cavity easily leaks when the electrodes are replaced, which causes various inconveniences.

Therefore, the present invention provides an electrode for an electrosurgical instrument which is suitable for both incision of muscles and fats and incision and cutting of mucous membranes and fibrous tissues, and which enables rapid surgery without electrode replacement. With the goal.

[0008]

In order to solve the above-mentioned problems, the present invention is an electrode for an electrosurgical instrument for treating living tissue by supplying a high frequency current, wherein the electrode tip is bent in a plurality of hooks. A first cut-out type incision portion is provided on the outside of the hook portion of the hook portion, and a hook-cut type second incision portion is formed inside the hook portion. .

[0009]

In the electrode for an electrosurgical instrument according to the present invention, a plurality of electrode tips for supplying a high-frequency current to living tissue are bent to form a hook shape, and a push-cut type first incision portion is provided outside the hook portion. Therefore, the living tissue is incised by bringing the first incision into contact with the surface of the living tissue and pushing (pulling) along the surface of the living tissue. Further, since the hook-cut second incision portion is provided inside the hook portion, the living tissue is incised by hooking the living tissue inside the hook.

Therefore, both push-cut incision and hook-cut incision of living tissue are possible, and incision of various forms of living tissue is possible with one electrode.

[0011]

1 shows a first embodiment of an electrode for an electrosurgical instrument according to the present invention.

The electrode 1 has a tip portion 2 for incising living tissue.
And a body portion 4 that secures a length of the electrode that can be easily moved in the abdominal cavity, and a connection portion 6 that is connected to a handpiece provided at a tip portion of a cable that guides a high-frequency current supplied from an electrosurgical instrument body (not shown). It consists of

The tip portion 2 forms a plurality of bent hook-shaped hook portions. That is, the hook portion is formed by the intermediate portion 12 bent at an obtuse angle from the base portion 10 connected to the body portion 4, and the claw portion 14 bent at an acute angle from the intermediate portion 12.

The feature of the present invention resides in that the first cutout portion 16 of push-cut type is formed at an acute angle portion of the hook portion formed by the intermediate portion 12 and the claw portion 14, and the intermediate portion 12 is formed.
And the hook cut-in type second incision portion 18 is formed in the inner portion of the hook portion formed by the claw portion 14.

That is, the electrode 1 for an electrosurgical instrument inserted into the abdominal cavity through the trocar presses the first incision 16 against the surface of the muscle or fat tissue 30 as shown in FIG. While pulling, the tissue 30 such as muscle and fat is incised by the heat generated by the high frequency current supplied from the electrosurgical instrument body to the electrode 1. Further, the second incision section 18 hooks a mucous membrane or a fibrous tissue on the inner portion of the hook section to incise and cut the biological tissue, as in the method shown in FIG.

Further, FIG. 3 shows the second embodiment of the electrode for electrosurgical instrument of the present invention. The electrode 8 shown in the second embodiment is the first embodiment.
It has substantially the same shape as the electrode 1 shown in the embodiment. That is, the electrode 8 is composed of a tip portion 2 ′ body portion 4 and a connecting portion 6, and the tip portion 2 ′ includes an intermediate portion 12 ′ bent at an acute angle from a base portion 10 ′ and an intermediate portion 12 ′. The hook portion is formed by the claw portion 14 'bent at an obtuse angle.

The feature of the second embodiment is that the portions which can be effectively used as the first incisions by forming the electrode tips like the electrodes 8 are 16'a and 16'b.
There are two places as shown in. That is, when incising muscles and fats that exist at various positions in the abdominal cavity,
It is possible to minimize the rotational movement of the electrode within the abdominal cavity, and it is possible to realize more rapid surgery. Also,
The 2nd incision part 18 'hooks a mucous membrane or a fibrous tissue to the said hook part inner side part, and incises and cut | disconnects a biological tissue like the 2nd incision part 18 of 1st Example.

The acute angle and the obtuse angle forming the hook portion at the tip of the electrode can be selected by selecting an angle suitable for the purpose of use, whereby an operation with a higher incision efficiency can be realized.

[0019]

[Effect of the Invention] Since the present invention is configured as described above,
A single type of electrode for an electrosurgical device can perform push incision and hook incision of living tissue, and can be used for both incision of muscle and fat and incision of mucous membrane and fibrous tissue.

Therefore, it is not necessary to replace the push-cut electrode and the hook-cut electrode during the operation with the electrosurgical unit. In addition, it is possible to prevent leakage of carbon dioxide gas that inflates the abdominal cavity when the electrodes are replaced, and it is possible to realize rapid surgery.

[Brief description of drawings]

FIG. 1 is a side view showing an electrode for an electrosurgical instrument according to a first embodiment of the present invention.

FIG. 2 is a view showing a use state of the electrode for an electrosurgical instrument according to the first embodiment of the present invention.

FIG. 3 is a side view showing an electrode for an electrosurgical instrument according to a second embodiment of the present invention.

FIG. 4 is a perspective view of a conventional push-cut type electrosurgical unit electrode.

FIG. 5 is a perspective view of a conventional hook-and-break type electrode for an electrosurgical instrument.

FIG. 6 is a view showing a state in which a conventional hook-and-break type electrosurgical unit electrode is used.

FIG. 7 is an explanatory diagram illustrating an operation using a trocar.

[Explanation of symbols]

 1 Electrode 16 1st incision part 18 2nd incision part

Claims (1)

(57) [Scope of utility model registration request] 1. An electrode for an electrosurgical instrument for treating a living tissue by supplying a high-frequency current, wherein a plurality of electrode tips are bent to form a hook-shaped hook portion, and the hook portion is pushed out to the outside of the hook. An electrode for an electrosurgical instrument, comprising a first incision portion of a mold, and a hook-and-cut second incision portion formed inside the hook portion.