JPS61501308A - Bi-polar bi-active electrocoagulation device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] 2 poles, 2 activity types, atmospheric condensation Technical field TECHNICAL FIELD This invention relates generally to electrosurgical instruments, and more particularly to bipolar bi-acting instruments. (bipolar piactive) relating to electrical condensation devices.

Background technology To coagulate living tissue without visual control during body cavity surgery There are currently two types of electrical condensation devices known in the art.

The device has a semi-annular shape, is made of dielectric material, has one protrusion, and has a protrusion. Two active electrodes consisting of parallel bars separated by a certain distance from each other are installed on the outer surface of the outlet. I'm being kicked.

(For example, Soviet inventor's certificate No. 438422, international valve g Cl zA61B17/this When operating a device such as The contact bar is then crimped onto the tissue to be coagulated.

However, the surface of the electrode is easily covered with carbon deposits (condensation). This makes it easy to remove the instrument from the body cavity being operated on in order to clean the electrode. It is necessary to withdraw the

The siatylmy current produces a very sharp effect on the living body (4 m), but it is due to heat transmission. The therapy current flows through a small cross-sectional area (i.e. the cross-sectional area at the gap between the bars). and the device remains virtually immobile with respect to the area on the surface to be operated on. This is due to the following.

Coagulation is problematic and is performed on small localized areas on the surface undergoing surgery. Therefore, the uniformity of the setting action cannot be guaranteed.

Furthermore, access to the injury in the internal body cavity is limited to the length of the finger pressing on the device; On the other hand, the condensation area is limited to the range of rotational angles of the arm.

Other prior art bipolar biactive electrocondensation devices are known, which devices have a conical shape. an actuating body formed in a shape having two electrodes fixed thereto; It protrudes from the surface of the actuating body and forms a spiral (for example, 1983, 12 (See International Patent No. 5U83100046 filed on May 21st).

To operate such an electrocondensation device, a cyathilmy current is applied to the electrodes. is supplied, the actuator of the actuating body is activated, and the tapered shape of the actuating body is The surface is pressed against the living tissue undergoing surgery. Due to carbon deposits and electrodes The surface tissue layer that is mechanically removed is formed by spiral groups during the coagulation process. The south pole is thus constantly self-cleaning. Condensation is This is done by moving the actuating body laterally over the entire surface to be operated on.

Electrocondensing devices having the properties described above have the following disadvantages.

- &fli! at the contact surface due to the permanent effect of the maximum siatylmy current! Setting strength This causes damage to the organs and tissues adjacent to the preset coagulation area. This is especially true in the case of body cavity surgery and visual control. Occurs when the treatment of a disorder is performed without relying on the patient.

- inability to efficiently coagulate lesions with a spherical cavity or spherical base; It is.

- Due to the axial force generated in the electric scratching part protruding from the surface of the actuating body, the Additional mechanical injuries may result.

- The period of stable operation of the electrocondensing device between cleanings is too short.

Disclosure of invention The main object of the present invention is to provide a bipolar, bi-active electrocoagulation device that degree of traumatic injury to living tissue when treating injuries with The goal is to provide something that can reduce the

The purpose of the foregoing is to provide a bipolar bi-active electrocoagulant device with a an actuating element having an electrode connected thereto, the actuating element being secured to the holder and causing bleeding; rotatable relative to its own actuator for coagulation of one tissue according to the invention, in which the actuating element is , arranged parallel to the longitudinal axis of the actuating element made of dielectric material and coplanar with the electrode. are separated into at least one pair of elements by an insulating gasket is essentially one electrode.

Preferably, the actuating element is cylindrical and has a hollow spherical end.

The ratio of the width of the gasket to the width of each electrode is in the range of 1:15 to 1:20. It is advantageous to be selected.

When two or more pairs of electrodes are used in an electrocondensing device, adjacent The poles should be connected to current leads of different polarity.

Brief description of the drawing In the following, the invention will be explained by a detailed description of some embodiments, with reference to the accompanying drawings. In the accompanying drawings, FIG. 1 shows two electrodes according to the present invention. Remaining diagram of the incorporated bipolar biactive electrocondensing device, Figure 2 shows the same electrocondensation device, showing a cross section along line n-■ in Figure 1. figure, FIG. 3 shows a bipolar biactive electrocoagulation device incorporating four electrodes in accordance with the present invention. Figure, FIG. 4 is a diagram showing a cross section taken along the line IV-IV in the first time.

The bipolar, biactive electrocoagulation device according to the invention comprises an actuating element 1 (FIG. 1), which The actuating element has the shape of a cylinder, the hollow end 2 of which is spherical. . The actuating element 1 is divided into two parts by a gas valve 7 (Fig. 2). Each one is electrode 4 and 5. The gasket 3 is made of dielectric material and the actuating element 1 (Fig. 1) arranged parallel to the longitudinal axis and identical to electrodes 4 and 5 (Fig. 1) It is planar.

Electrodes 4 and 5 (Fig. 1) are connected to respective current leads 6 and 7, Through the current leads, terminals 8 and 9 connect to a cyathilmy current source (not shown). Connected. Current leads 6 and 7 form a commutator with brushes 10 and 11. has been completed.

The actuating element 1 is fixed to a holder 12, which holder is provided with a rotary movement in the actuating element 1. An electric drive 13 is housed therein.

According to the invention, the actuating element 1 can be divided into two or more pairs of electrodes 4.5. be. For example, Figures 3 and 4 have two pairs of electrodes, namely 4 and 5.14 and 15. A specific example of an electrocondensing device is shown in which two pairs of acid electrodes are connected to the actuating element 1 with a cross-shaped gasket. It is formed by dividing by cuts.

In such a case, electrodes 4 and 5, 14 and 15 are current leads with opposite polarity. 6 and 7 are connected in pairs.

In order to improve the stability of the electrocondensing device, the width rhJ of the gasket 3 ( (Fig. 2), the ratio with the width raJ of electrode 4 or 5 is set in the range of 1:15 to 1:20. You should choose. In this case, if the acid ratio h:a is greater than 1:15, the voltage on the electrode will be This results in the accumulation of carbon deposits and contamination of the entire electrode surface; On the other hand, if the acid ratio h:a is less than 1:20, the electrode life will be shortened. It worsens the conditions for current conduction.

The bipolar biactive electrocoagulation device according to the invention operates as follows.

The rotation of the drive device 13 is transmitted through the drive shaft 17 to the actuating element 17, which connects the electrodes 4 and and 5 (14 and 15) rotate together with the actuating element 1, both electrodes connected to the current source. Next, the actuating element 1 moves the tissue of the living body that is being operated on. is brought into contact with the surface so that a current flows between electrodes 4 and 5 through the biological tissue. This causes the tissue to coagulate. The condensation process in this case is the electrode 4 and 5 and the surface of the electrode directly adjacent to the gap. However, on other parts of the surfaces of electrodes 4 and 5, almost no condensation occurs. It's either not, or it's just $100.

During operation, the continuous self-cleaning of the electrodes 4 and 5 ensures that the operating elements l This is due to the rotation of Despite this, even if condensed deposits try to accumulate, , carbon deposits expand on the surfaces of i-poles 4 and 5 away from gasket 3 The fact that carbon deposits do not cover the entire surface of electrodes 4 and 5 during This ensures stable operation of the electrical condensation equipment, and the reason for this is the gasket. This is because the cut 3 is 1/15 to 1/20 the size of the electrode.

The electrocoagulation device according to the invention is suitable for surgery on lesions with a bulbous base or bulbous cavities. It has been found to be particularly effective when used as a

When multiple pairs of electrodes are provided, the ratio between the process in the ′/$bi stage and the process in the main stage. , i.e. the ratio between the gasket 3 and the active part in the actuating element 1. This makes it possible to optimize the coagulation process.

The electrocoagulation device described above can be used to treat biological tissue located in difficult-to-access locations and large-area wounds. A means of rapidly and effectively performing slow atraumatic coagulation of living tissue including harmful surfaces provide. Thereby, the aforementioned electrocondensing device is especially applicable in critical locations However, a particularly critical location for coughing is the vessel, organ, or tissue adjacent to the area of coagulation. where it is absolutely unacceptable to cause appreciable damage to , for example, following pneumonectomy (with coagulation of injuries in the mediastinal region). cholecystectomy if the heart, large diameter vessels, and esophagus are located in that area. in case of subsequent tissue coagulation, and in other cases.

Industrial applicability The present invention may find application for the coagulation of biological tissue, but the biological tissue may , lesions with blood vessels and various organs, bulbous cavities and base adjacent to the area of coagulation , especially as a result of the removal of a tumor or organ that has a shape that approximates a spheroid Includes a spherical bed.

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Claims (4)

[Claims] 1. an actuating element with electrodes (4, 5) connected to respective current leads (6, 7); element (1), which is attached to the holder and has a drive device (13) for coagulating hemorrhagic tissue; a bipolar, biactive electrocondensing device comprising: The actuating element (1) is divided into at least a pair of elements, each of which is essentially an electrode. (4, 5), the division is a division with a gasket (3) interposed, and the gas The cap is made of dielectric material and is arranged parallel to the longitudinal axis of the actuating element (1). (4, 5) Sexual electrocoagulation device. 2. The actuating element (1) is shaped as a cylinder with a hollow spherical end (1). 2. The electrocondensing device according to claim 1, wherein the electrocondensing device is 3. The ratio of the width of the gasket (3) to the width (a) of each electrode (4, 5) is 1:15. Claim 1 or 2 is selected in the range of 1:20. Electrocondensation device as described in Section. 4. Two or more pairs of electrodes (4, 14, 5, 15) are current leads with different polarities. The first, second or third claim is characterized in that the first, second or third Electrocondensation device as described in Section 1.