SU1512622A1 - Electrode device for hyperthermia of hollow organs - Google Patents

Abstract

The invention is intended for the treatment of bladder tumors. The purpose of the invention is to reduce the trauma in hyperthermia of the bladder. The device contains an elastic dielectric body 1 with channels 6.8 and 10, an active electrode 2, a balloon 5. The body has 4-6 holes 4 with a diameter of 3-4 mm and an outlet 9, channels 8 and 10 are connected to the perfusion system. The inflated balloon allows the active electrode to be moved away from the posterior urethra, the cervix and the walls of the bladder, reliably protecting them from thermal damage. 3 il.

Description

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The invention relates to medical technology, namely to electrode devices for high frequency (HF) hyperthermia (diathermy), and can be used to treat human bladder tumors.

The purpose of the invention is to reduce trauma during hyperthermia of the bladder.

FIG. 1 shows an electrode device, a section; in fig. 2 shows section A-A in FIG. I; in fig. 3 shows a section BB in FIG. one.

The electrode device contains an elastic dielectric body 1 with its active electrode 2 located inside and an insulated conductor 3. The working end of the body of the electrode device has rounded holes 4 with a diameter of 3-4 mm located in opposite walls of the body opposite to the electrode 2-3 on each side (total holes 4-6), and the balloon 5 on the working part of the body. The balloon 5 is connected by a channel 6 in the wall of the housing 1 to a valve 7, which allows inflating and lowering the balloon 5 and which prevents the balloon from falling off. In the wall of the housing 1 of the device is a hollow channel 8. On the muffled end part of the housing there is an outlet 9 at the top of the working part. The hollow channel 10 has openings 4 opposite the electrode, which serve to irrigate the bladder during the procedure with a cooling liquid (the direction of flow of the liquid along the channels 8 and 10 is indicated by arrows). Openings 4 with a size of at least 3-4 mm, located opposite the electrode, serve for the passage of RF current and fluid, which through the channel 8 and the outlet 9 enters the urinary bladder and through the inlets 4 flows out of it, washing the electrode and additionally cooling him.

Channels 6, 8 and 10 terminate at their non-working ends with tapered extensions for the hermetic connection of various tips. The hollow channel 10 exceeds in diameter the electrode 2 and the insulated conductor 3.

The electrode device is used as follows.

Prior to the activation of the RF therapy apparatus, the electrode device, with the balloon lowered 5, is inserted into the bladder via the urethra. Connect the cone-shaped expansion of the channel 6 to the syringe tip and inflate the balloon 5.

The inflated balloon 5, circularly enclosing the body of the device, located between the bladder neck and the active electrode, moves it away from the back urethra, neck and bladder walls, reliably protecting them from thermal damage. Bladder perfusion tubes are attached to channels 8 and 6. Conductor 3 is connected to the RF generator, and passive

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the electrode is attached to the body of the patient. A bladder perfusion device, an RF therapy device are turned on, and treatment is carried out according to a predetermined method. When the generator is turned on, the high-frequency current passes between the active electrode 1 located in the center of the bladder, through the holes 4 and the passive electrode fixed on the patient's body, and the bladder tissue with the tumor is subjected to therapeutic heating.

Due to the fact that the body of the electronic device 1 is made of an elastic material and does not change the configuration of the urethra of the patient, the pain during treatment procedures is significantly reduced. This makes it possible to conduct intravesical RF therapy in patients without epidural anesthesia. The location of the active electrode 2 inside the working end of the housing of the electrode device and the presence of an inflated balloon 5, located between the bladder neck and the active electrode and the device circularly enclosing the device, excludes accidental contact of the electrode with the mucous membrane of the urinary tract and their thermal damage, as the inflated balloon 5 moves away the active electrode from the posterior urethra, the cervix and the walls of the bladder, and the fluid flowing through the inlets 4, washing the electrode, further cools it. The proposed device is much simpler in design and more known, since it does not contain an optical system. Complications of treatment were not observed in any case of using an electrode device for more than 30 sessions of treatment.

Claims (1)

Invention Formula Electrode device for hyperthermia and hollow organs, containing an elastic tubular body made of a dielectric material with main and two additional channels, as well as an active echetrode mounted at the working end of the body and connected to a flexible electrical conductor, characterized in that In order to reduce the morbidity during hyperthermia of the bladder, an elastic balloon is placed on the working part of the body; it is connected to one of the additional channels of the body, which is connected to a source of increased pressure, the electrode is placed in the main channel of the housing in its working end, in which 4-6 through holes of 3-4 mm diameter are located, located in several longitudinal sections of the housing, while the outlet of the second additional channel, communicated with a perfusion system, which is also connected to the main channel of the body.