JPH0380847A - Patient electrode for high frequency treatment - Google Patents

Abstract

PURPOSE:To stabilize the contact resistance of a patient electrode by inserting an electrode part of the patient electrode into the body of a patient and allowing it to adhere closely thereto. CONSTITUTION:A patient electrode 11 is provided with a metallic bar 12 which becomes the body, a balloon 13 consisting of conductive rubber attached to this metallic bar 12 so as to cover this metallic bar 12, and also, to come into contact electrically with this metallic bar 12, and an insulating part 14 consisting of an insulating material provided on the base end side of the metallic bar 12. The patient electrode 11 is inserted, for instance, into the rectum 25 without inflating the balloon 13. Thereafter, air is fed into the balloon 13 through a tube 18, feed air passage 17 and an air hole 16 from a compressor 20, and this balloon 13 is inflated. As a result, this balloon 13 adheres closely to the rectum 25.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention applies pA to a patient electrode for high frequency treatment used for high frequency treatment.

[Prior Art] In recent years, it has become possible to perform treatments such as polypectomy, pavilotomy, hemostasis, and cauterization by endoscopically inserting various high-frequency treatment instruments into body cavities. Such high-frequency treatment uses a patient electrode attached to the patient and a treatment electrode inserted into a body cavity to perform the treatment, and the treatment is performed by a high-frequency current flowing between the two electrodes. The patient electrodes include disposable ones and reusable ones, but conventionally, most of them have been placed on the patient's buttocks, or worn on the patient's thighs or arms.

[Problems to be solved by the invention] However, when placed on the buttocks or worn on the thighs,
Blood, JFI fluid, etc. may accumulate in the applied part, causing uneven current density or shifting of the patient electrode, changing contact resistance, which may interfere with surgery or cause burns to the patient. There is a problem.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a patient electrode for high-frequency treatment that can stabilize contact resistance.

[Means for Solving a Problem] The patient electrode for high-frequency treatment of the present invention includes a main body to be inserted into the body, and a conductive electrode portion provided on the outer periphery of the main body.

[Operation] In the present invention, the electrode portion of the patient electrode is inserted into the patient's body and brought into close contact with the patient's body.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings.

Figures 1 to 3 relate to the first embodiment of the present invention.
The figure is a cross-sectional view of the patient electrode, and Figure 2 (a) is an explanatory diagram showing how the patient electrode is inserted into the rectum without inflating the balloon.
FIG. 2(b) is an explanatory view showing how a balloon is inflated within the rectum to bring the patient electrode into close contact with the rectum, and FIG. 3 is a perspective view showing the high-frequency treatment device system.

As shown in FIG. 3, the high-frequency treatment device system includes a high-frequency ablation power source 1, a patient electrode 11 connected to the high-frequency ablation power source 1, and a treatment electrode connected to the high-frequency ablation power source 1. A high frequency treatment instrument 2 is provided. The ^frequency treatment instrument 2 is introduced into the body cavity via the treatment instrument channel of the endoscope 13.

The endoscope 3 includes an elongated insertion section 4 and an operation section 5 connected to the rear end of the insertion section 4. The insertion part 4
is constructed by connecting a distal end portion 8 to the distal end of a flexible tube portion 6 via a bendable bending portion 7 .

The treatment instrument channel is formed in the insertion section 4, and this treatment instrument channel communicates with a treatment instrument insertion opening 9 provided in the operating section 5. Further, a light guide cable 31 extends from the operation section 5, and a light guide connector 32 (not shown) is provided at the end of the light guide cable 31.

As shown in FIG.
2, a balloon 13 made of conductive rubber attached to the metal rod 12 so as to be in electrical contact with the metal rod 12, and an insulating part 14 made of an insulating material provided on the proximal end side of the metal rod 12.
It is equipped with A plurality of ventilation holes 16 are formed in the outer periphery of the metal rod 12 . Further, an air supply passage 17 communicating with the ventilation hole 16 is formed in the metal rod 12,
A tube 18 is connected to the base end of the air supply passage 17. This tube 18 is connected to a compressor 20 with a valve 19 interposed therebetween. Furthermore, one end of a patient electrode cord 22 is connected to the base end of the metal rod 12, and a connector 23 is provided at the other end of this patient electrode cord 22. And this patient electrode 11
is connected to the high frequency ablation power supply device 1 via the connector 23.

Further, the treatment electrode of the high-frequency treatment instrument 2 is connected to the high-frequency ablation power supply device 1 via a treatment electrode cord 30. Further, a scope cord connector provided on the light guide connector 32 of the endoscope 3 is connected to the high frequency ablation power supply device 1 via a scope cord 33. This scope cord 33 is for returning the current leaking from the treatment electrode to the endoscope 3 side to the high frequency ablation power supply device 1 side to circulate it.

Next, the operation of this embodiment will be explained.

The patient electrode 11 of this embodiment is inserted, for example, into the rectum 25 without inflating the balloon 13, as shown in FIG. 2(a). After that, from the compressor 20, the tube 1
8. The balloon 1 is passed through the air supply passage 17 and the ventilation hole 16.
Air is sent into the balloon 3 to inflate the balloon 13. Then, this balloon 13 comes into close contact with the rectum 25, as shown in FIG. 2(b).

The patient electrode 11 and the high-frequency treatment tool 2 are connected to a high-frequency ablation power supply 1, and the high-frequency ablation power supply @1 supplies high-frequency current to the patient electrode 11 and the treatment electrode of the high-frequency treatment tool 2. On the patient electrode 11 side, the high frequency current from the high frequency ablation power supply @1 is transmitted to the patient electrode cord 22.
．． Electricity is applied to the patient via the metal rod 12 and the conductive balloon 13.

In this embodiment, since the patient electrode 11 is placed tightly inside the rectum 25, there is no accumulation of blood or disinfectant on the attachment part, there is no uneven current density, and the patient electrode 11 is not displaced. Contact resistance can be stabilized. Also,
The humidity at the attachment site is also more stable than the skin, so intraoperative electrode management can be reduced, and the same characteristics (contact resistance) can be obtained every time. Therefore, surgery can be performed safely and reliably, and burn injuries to patients can be prevented.

Note that a syringe may be used instead of the compressor 20 as the air supply means.

FIG. 4 is a partially cutaway perspective view of an insertion section of an endoscope according to a second embodiment of the present invention.

In this embodiment, when the endoscope 3 is a lower endoscope, the outer cover 28 of the insertion portion 4 is made of conductive rubber, and the patient electrode cord 22 is connected to the outer cover 28.

The other configurations are the same as in the first embodiment.

According to this embodiment, since the insertion section 4 of the endoscope 3 also serves as a patient electrode, the patient electrode is not attached to the arm or thigh.
Problems such as interfering with operations such as intravenous drip and blood pressure measurement are eliminated.

Furthermore, the operation of attaching patient electrodes before surgery becomes unnecessary.

Other functions and effects are similar to those of the first embodiment.

FIG. 5 is a perspective view showing an insertion section of an endoscope according to a third embodiment of the present invention.

In this embodiment, a balloon 29 made of conductive rubber is provided in a part of the insertion section 4 of the endoscope 3, and a patient electrode cord 22 and a tube 18 are connected to the balloon 29.

The other configurations are the same as in the first embodiment.

In this embodiment, after inserting the insertion section 4 of the endoscopic A-scope 3 into the rectum, etc., the balloon 29 is inflated to bring the balloon 29 into close contact with the rectum, etc.

Other functions and effects are similar to those of the first and second embodiments.

It should be noted that the present invention is not limited to the above-mentioned embodiments. For example, the conductive part of the patient electrode provided on the outer periphery of the balloon is pressed against the body wall using a balloon or the like made of non-conductive rubber. They may be brought into close contact.

[Effects of the Invention] As explained above, according to the present invention, since the electrode portion of the patient electrode is inserted into the patient's body and brought into close contact with the patient, there is an effect that the contact resistance of the patient electrode can be stabilized.

[Brief explanation of drawings]

Figures 1 to 3 relate to the first embodiment of the present invention.
The figure is a cross-sectional view of the patient electrode, and Figure 2 (a) is an explanatory diagram showing how the patient electrode is inserted into the rectum without inflating the balloon.
FIG. 2(b) is an explanatory diagram showing how the balloon is inflated within the rectum and the patient electrode is brought into close contact with the rectum, FIG. 3 is a perspective view showing the high-frequency treatment device system, and FIG. 4 is the second embodiment of the present invention.
FIG. 5 is a partially cutaway perspective view of the insertion section of the endoscope according to the embodiment. FIG. 5 is a perspective view showing the insertion section of the endoscope according to the third embodiment of the present invention. 1... High frequency ablation power supply device 2... High frequency treatment instrument 11... Patient M pole 12... Metal rod 13...
Balloon 16...Vent hole 20...Compressor Figure 1 Figure 2 Figure 5

Claims (1)

[Claims] 1. A patient electrode for high frequency treatment, comprising: a main body inserted into the body; and a conductive electrode section provided on the outer periphery of the main body.