JPH0738859B2 - Monopolar type electrocoagulation connector - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is applicable to various operations such as surgery.
The present invention relates to an improvement of a monopolar type electrocoagulation connector that performs hemostasis, adhesion, drying and the like by an electrocoagulation method without destroying living tissues.

[0002]

BACKGROUND OF THE INVENTION When living tissue is placed between two electrodes, current must pass through the tissue in an attempt to complete the circuit, but all living tissue is a good electrical conductor composed primarily of liquid. Therefore, the high frequency current flows through the cells of the living tissue and passes through the body of the patient. Therefore, the cells of the biological tissue resist the flow of the high-frequency current, generate Joule heat, and are heated, and as a result, coagulation occurs. This is the electrocoagulation method.

Bipolar type and monopolar type are known as the electrocoagulation contactors used in the electrocoagulation method. The bipolar type electrocoagulation contactor is provided with two tweezers-shaped contactors, and an electric current is passed between the contactors at the same density to generate the same amount of heat in both. on the other hand,
The monopolar type electrocoagulation contactor of the same type as the present invention, the inner axial electrode is disposed so as to sandwich the insulator inside the needle-shaped outer pipe electrode, and the outer pipe / inner axial electrode near the electrode tip It concentrates the electric current flowing through the tissue to generate heat.

In any of the above types, the electric current passes through the tissue between the two tips of the electrode contactor, so that only the tissue between the electrode contactor tips is coagulated, and the coagulation range is large even for excessive output. It does not exceed the range between the electrode contact tips and does not affect other tissues. Therefore, it is mainly used for coagulation within a limited range such as blood vessel coagulation, and is also used for adhesion and suturing of tissue by taking advantage of the characteristics of the electrode contactor.

The structure of this type of conventional monopolar type electrocoagulating connector will be described with reference to a partial central longitudinal sectional view of FIG. In the figure, A is a conventional monopolar electrocoagulation connector, 1 is a resin barrel holder, 2 is a power cord, 3 is an injection needle-shaped outer pipe electrode, 4 is an inner shaft core electrode, and 5 is an insulating coating. .

The structure of the conventional monopolar type electrocoagulating connector A for electric coagulation is that the power cord 2 from the external power supply device is connected to the conductor 2a.
At the inner end of the injection needle-shaped outer pipe electrode 3 which is connected to the inner core electrode 4, which is also connected to the power cord 2 by the conductor 2b and whose penetrating surface is covered with the insulating coating 5, is disposed through the inner core electrode 4. At the same time, the outer pipe electrode 3 is inserted and fixed from the tip of the resin-made barrel holder 1, and the electrode slanted contact end 3 is attached from the tip.
It had a pen-like structure in which a and 4a were projected.

As described above, the monopolar electrocoagulation connector A generates heat by concentrating the current flowing between the tips of the outer pipe electrode 3 and the inner shaft electrode 4 at the oblique contact ends 3a, 4a. The outer pipe and the inner shaft center electrodes 3, 4
Since it is possible to coagulate only the tissue in the vicinity of the oblique contact ends 3a and 4a, it is mainly used for surgical operations such as coagulation of blood vessels and adhesion and suturing of tissues utilizing its characteristics.

[0008]

However, as described above, the monopolar type electrocoagulation connector has the slanted contact ends 3a, 4 as described above.
Since a current is concentrated on a to generate heat, deterioration due to the lapse of use is unavoidable in the vicinity of the outer pipe and the inner shaft center electrodes 3, 4 and the slanted contact ends 3a, 4a. Further deterioration occurs because it is necessary to wash and disinfect with a special chemical.

As a result, in the conventional monopolar-type electrocoagulation connector A, the insulating coating 5 near the oblique contact ends 3a, 4a peels off empirically after four or five times of use. In some cases, the outer pipe and the inner shaft electrodes 3 and 4 come into contact with each other. If the outer pipe and the inner shaft electrodes 3, 4 contact each other, a short circuit is completed, and current will not flow to the living tissue, and needless to say, electrocoagulation cannot be performed.

However, as described above, the conventional monopolar type electrocoagulation connector A has the outer pipe and the inner axial electrodes 3, 4 as described above.
Has a structure fixed to the resin-made barrel holder 1,
Even if only the slanted contact ends 3a and 4a become unusable, the whole becomes unusable. In such a case, the doctor himself sometimes polished and repaired the oblique contact ends 3a and 4a.
In most cases, we had the seller repair the product for free or buy a new one. In view of the above-mentioned conventional drawbacks, the present invention is to provide a monopolar type electrocoagulation connector in which the contact end can be easily replaced.

[0011]

The solution to the above-mentioned problems can be achieved by adopting the novel characteristic construction means listed below by the present invention.

That is, the feature of the present invention is that the outer shape is made of a conductor.
Align the Hasu截 Sawatan through the shaft center electrode insertion portion surface injection needle pipe electrode covered with an insulating film extending from the tapered female cap apical from the top end of the female fitting cap A header in which the fitting base end of the shaft center electrode protrudes from the center of the fitting opening of the female cap, an insulating shaft tube holder in which a power cord end from an external power supply device is pierced in the rear part, The shaft- shaped electrode of the shaft core electrode is fitted in the tip of the insulating barrel holder, and the outer tapered male protrusion is removably fitted in the female fitting cap and the surface of the penetrating portion is covered with an insulating coating. Monopolar electrocoagulation consisting of a male fitting plug that allows the fitting base end to be freely inserted from the outer end opening, projects the inner end of the cord, penetrates the axial pipe along the axial center, and connects the other conducting wire of the cord. It is an armor.

[0013]

According to the present invention, since the above-described means has been taken, the header is a cap extending from the outer pipe and the inner shaft center electrode, and the male end of the insulating shaft cylinder holder is fitted at the base end of the shaft center electrode. Conductive fitting can be freely removed from the projection of the fitting plug and the shaft center pipe. Further, the protrusions of the female fitting cap and the male fitting plug are tapered so that they can be fitted tightly and stably with each other.

[0014]

Embodiments of the present invention will be described with reference to the drawings. Figure 1
FIG. 2 is a partial central longitudinal cross-sectional view of the monopolar-type electrocoagulation connector of this example. In the figure, B is a monopolar type electrocoagulator, α is a header, 6 is an inner / outer peripheral taper type female fitting cap which extends a pipe electrode 7 at the top end, 6a is a flange portion, 7a is a slanted contact end, Reference numeral 8 is a shaft center electrode, 8a is a slanted contact end, 9 is an insulating coating, 10 is a resin-made insulating barrel holder, 11 is a male fitting plug, 12 is a shaft pipe, and 13 is an insulating coating. The same members as those in the conventional example are designated by the same reference numerals.

As shown in FIG. 1, in the monopolar type electrocoagulation connector B according to this embodiment, the header α of the injection needle-shaped outer pipe electrode 7 is covered with the insulating coating 9 on the surface of the insertion portion 8b. The needle-shaped inner shaft center electrode 8 insulated from the outer pipe electrode 7 is inserted with the slanted contact ends 7a, 8a aligned, and the outer pipe electrode 7 base end is made of a conductor. A structure in which the fitting base end 8c of the inner shaft electrode 8 which is attached to the top end of the fitting cap 6 and penetrates the top end of the female fitting cap 6 is projected from the center of the fitting opening 6b of the female fitting cap 6. Has become.

On the other hand, in the resin-made insulating barrel holder 10, the fitting portion 11a is fitted to the stopper flange portion 11b at the tip end receiving port 10a thereof, and a taper which can be fitted to the inner peripheral taper shape of the female fitting cap 6 is freely fitted. The male fitting plug 11 made of a conductor whose outer periphery is formed in a shape is provided, and the surface of the penetrating portion 12a of the male fitting plug 11 is covered with an insulating coating 13 on the axial center portion of the male fitting plug 11. A cylindrical inner shaft pipe 12 insulated from the mating plug 11 is inserted and arranged, and an inner end portion 12b is projected into the resin-made barrel holder 10.

The inner diameter of the outer end 12c of the shaft pipe 12 is
The outer diameter of the header [alpha] is set to be substantially the same as the outer diameter of the fitting base end 8c so that the header [alpha] can be fitted therein. Also, the inner ends of the male fitting plug 11 and the shaft pipe 12 are connected to the power cord 2 from an external power supply device (not shown) inside the resin-made barrel holder 10 by conductors 2a and 2b, respectively. .

Since the monopolar type electrocoagulation contactor B according to this embodiment has such a specific embodiment, the female fitting cap 6 of the header α and the fitting base end 8c of the inner shaft center electrode 8 are The male projection 11c of the male fitting plug 11 at the tip of the resin-made barrel holder 10 and the outer end port 12c of the shaft pipe 12 at the center of the male projection 11c are fitted to each other so that the conductive fitting can be detached. Any of the fitting base end 8c and the outer end opening 12c
Even if it is exposed to the outside, it can be visually checked at the time of mating, so the centering and coaxial fitting
The connection is extremely simple and easy, and the electrical connection is secured.
Therefore, the header α can be removed and replaced from the male fitting plug 11 male projecting portion 11c of the resin barrel holder 10 if necessary.

The shape of the female fitting cap 6 of the header α and the shape of the protruding portion 11c of the male fitting plug 11 of the resin barrel holder 10 are limited to the substantially conical taper shape as described above. However, even if these fitting methods are used, in this embodiment, the fitting method has been described, but it goes without saying that a screw method or the like may be used.

[0020]

As described above, according to the present invention, after four or five times of use, the insulating coating film is peeled off due to deterioration of the contact end, and the inner shaft center and the outer pipe electrode come into contact with each other to prevent electrocoagulation. In the case of the conventional monopolar type electrocoagulation connector, it is possible to immediately use a monopolar type electrocoagulation connector which has been completely unusable by just replacing the header. Thus, the four, it is not necessary to the physician himself repaired by grinding an oblique截触end every five times of use, also, without or replacement of expensive monopolar electrocoagulation for Secco, about at cost 120 Since only one-half of the cheap header needs to be replaced, the financial burden on the user is drastically reduced. Superior practicality, such as that the seller side does not have to repair for free and the burden is reduced,
It has usefulness.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a part of a monopolar electrocoagulation connector according to an embodiment of the present invention.

FIG. 2 is a partial central longitudinal cross-sectional view of a conventional monopolar electrocoagulation connector.

[Explanation of symbols]

A, B ... Monopolar type electrocoagulation connector 1, 10 ... Resin barrel holder 2 ... Power cord 2a, 2b ... Conductor wire 3, 7 ... Pipe electrode 3a, 7a ... Oblique contact end 4, 8 ... Shaft core electrode 4a, 8a ... Oblique contact end 5, 9, 13 ... Insulating film α ... Header 6 ... Female fitting cap 6a ... Collar part 6b ... Fitting opening 8b ... Inserting portion 8c ... Fitting base end 10a ... Receiving opening 11 ... Male Mold fitting plug 11a ... Fitting portion 11b ... Stopper collar portion 11c ... Male type projection portion 12 ... Shaft pipe 12a ... Penetration portion 12b ... Inner end portion 12c ... Outer end port

Claims (1)

[Claims] 1. An axial center electrode, the surface of the insertion portion of which is covered with an insulating coating, is provided in an injection needle-shaped pipe electrode extending from the top end of a tapered outer shape female fitting cap made of a conductor. a header for fitting the base end of the axial center electrode protruding from Hamakuchi center of the female fitting cap with inserted by aligning Hasu截 Sawatan through apical, the power cord end from an external power supply An insulating barrel holder that is attached to the rear part, and an externally tapered shape that fits inside the tip of the insulating barrel holder and projects.
The male projecting portion is removably fitted into the female fitting cap, and the surface of the through portion is covered with an insulating coating so that the fitting base end of the shaft center electrode can be inserted from the outer end opening. A monopolar electrocoagulation connector comprising a male fitting plug that projects an inner end portion that is connected to and penetrates an axial pipe along an axial center and is connected to another conductive wire of the cord.