RU22035U1 - DEVICE FOR COAGULATION AND RESECTION OF BIOLOGICAL TISSUES - Google Patents

Abstract

1. A device for coagulation and resection of biological tissues, containing an electric power source, a high-frequency alternating voltage generator with an adjustable frequency connected to it, made in the form of an active amplifying element and a multipole electrically connected to it, a high-frequency converter made in the form of a core placed in the floor dielectric frame, and low-voltage and high-voltage sections wound onto this frame, the first section of which is connected to the generator, and the high-voltage This section is open, an active needle electrode connected to one end of the transducer core generating a high-frequency electric discharge, and a gas-dynamic unit with an inert gas container, the gas supply tube of which is installed coaxially with the needle electrode and enclosing the transducer, characterized in that the transducer core is made in the form of a plate of conductive electric current of non-magnetic material, the thickness of which is selected less than its width by at least two decimal orders. 2. The device for coagulation and resection of biological tissues according to claim 1, characterized in that the transducer core is provided with at least one more plate mounted along its axis at an angle to the plane of the first plate.

Description

The utility model relates to medical equipment, namely, to devices for coagulation and resection of biological tissues (vessels).

Currently, coagulation of tissues, blood vessels, is carried out with the help of a tenod node to the treated area using an inert gas jet (or without it), which passed through the zone of high-frequency electric discharge.

A device for coagulation and resection of biological tissues is known (application No. 2001127188 of October 16, 2001 for a certificate of the Russian Federation for a utility model, a decision to issue a certificate of November 6, 2001) containing an electric power source, a high-frequency alternating voltage generator with an adjustable frequency connected to it, a high-frequency a converter made in the form of a core placed in a hollow dielectric frame and low-voltage and high-voltage sections wound onto this frame, the first section of which is connected to the generator, and the high-voltage section is open, an active needle electrode connected to one end of the transducer core, creating a high-frequency electric discharge, and a gas-dynamic unit with a capacitance for inert

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gas, gas supply pipe GT which is the body of the device; mounted coaxially to the needle electrode and covers the transducer. This device is taken as a prototype.

The disadvantages of the known device include the use in its design of a core made in the form of a ferrite rod or

the needle electrode itself, which limits the surface area of the core, and therefore the area of propagation of surface electric waves induced by the sections of the Converter and reduces the efficiency of the device.

Another disadvantage of the known device is the limited frequency used when operating various organs, due to the design of the core. In addition, the presence of a ferrite rod increases the cost of the device.

The technical task of the proposed utility model is to increase the efficiency and expand the functionality of the device by providing an extension of the range of frequencies used, as well as reducing the cost of the device.

This is achieved by the fact that in a device containing an electric power source, a variable-frequency high-frequency alternating voltage generator connected to it, made in the form of an active amplifying element and a multipole electrically connected to it, a high-frequency converter, made in the form of a core placed in a hollow dielectric frame and low-voltage and high-voltage sections wound on this frame, the first section of which is connected to the generator, and the high-voltage section is open, an active needle electrode connected at one end to the converter core, creating a high-frequency electric discharge, and a gas-dynamic unit with a capacity for inert

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gas, the gas supply tube which is the device’s body is installed coaxially with a needle electrode and covers the converter, the converter core is made in the form of a plate of non-magnetic material conducting electric current, the thickness of which is selected by at least two decimal places less than its width

order. This allows you to increase the efficiency of the device, expand the range of frequencies used for coagulation of tissues of various organs and reduce the cost of the device.

In addition, for an even greater increase in the area of the core, it can be equipped with at least one more plate installed along its axis below the base to the plane of the first plate.

The drawings show the proposed utility model, where in FIG. 1 is a general diagram of the device, FIG. 2 is a structural diagram of a converter, FIG. 3 is a section along aa of FIG. 2, FIG. 4 is a structural diagram of a converter with an additional core plate, FIG. 5 is a section along BB of FIG. 4.

The device (Fig. 1) contains an electric power source 1, a high-frequency alternating voltage generator 2 with an adjustable frequency connected to it, a high-frequency converter 3, and a gas-dynamic unit 4. The generator is made in the form of an active amplifying element 5 and an electrically connected multipole 6. The converter is made in the form of an electric five-terminal and includes a low-voltage 7, high-voltage 8 sections and a core 9, which is the fifth terminal of a five-terminal for energy collection. The core is connected to one end of the active needle electrode 10. The transducer sections are wound on a hollow dielectric frame 11 (FIG. 2). The low-voltage section of the converter is connected to the generator, and the high-voltage section is open. The gas supply tube 12, which is the device body, is installed coaxially with a needle electrode and covers the converter, and its inert gas tank 13 is connected to this tube. Argon or a mixture thereof may be used as an inert gas.

The core 9 of the transducer is made in the form of a plate (FIG. 3) from a non-magnetic material conducting electric current, the thickness of which is selected less than its width by no less than two decimal orders, for example, of copper foil.

Figure 4 shows a structural diagram of the Converter, in which the core has another plate 14 mounted along its axis at an angle (in this case) D1ae 90 °) to the plane 15 of the first plate. It is possible to install a third, etc. plates in the same way, and the angle will be correspondingly less than 90 (60 °, 30 °, etc.)

Then the surface area of the core will increase by about 2, 3, etc. time.

The operation of the device is as follows. When the electric power source is turned on, the generator generates a frequency close to the natural resonant frequency of the high-frequency converter. Electrical vibrations are applied to the low-voltage section of the converter and excite its own frequency of oscillations in it. When the active needle electrode approaches the biological tissue 16 in a system containing a generator, a transducer, biological tissue and an electric discharge 17 arising and maintained between the transducer and the tissue, a resonant operation mode of the device arises and is automatically maintained.

The resonant mode of operation of the device is externally characterized by the appearance of a high-frequency electric discharge at the end of the active needle electrode, or by the formation of a luminous torch of cold plasma 18, if an inert gas is supplied from the container through the gap between the insulating tube and the needle electrode through the gap of the high-frequency discharge. If the needle electrode is too far from the biological tissue or is in direct contact with

it, then the capacitive coupling between the transducer and the tissue changes, the frequency of the resonant oscillations of the above system is disrupted, and the device leaves the operating mode. In this case, the high-frequency electric discharge is stopped and the device goes into standby mode. The resonant mode of operation of the device is automatically restored when the active needle electrode approaches the tissue again.

The proposed device operates in parametric resonance mode, whereby it is possible to adjust the input power by changing the frequency of the resonant oscillations of the operating mode. In this case, the coagulation depth of the processed biological tissue is changed. The depth of tissue coagulation can be changed by changing the power of the generated electromagnetic energy and its frequency, including by changing the parameters of the used transducer and its design scheme, namely, the number of turns of the transducer sections, the number of additional core plates.

If there are no leaks in the resonant system, then the plasma is excited without transferring Joule heat to the inert gas stream, that is, an anesthetic effect is ensured.

The proposed device can carry out the resection of biological tissues. In this case, a plasma-forming inert gas is not supplied to the high-frequency electric discharge zone.

The proposed utility model is cheaper than similar known devices and has great functionality while providing an almost complete anesthetic effect.

Claims (2)

1. A device for coagulation and resection of biological tissues, containing an electric power source, a high-frequency alternating voltage generator with an adjustable frequency connected to it, made in the form of an active amplifying element and a multipole electrically connected to it, a high-frequency converter made in the form of a core placed in the floor dielectric frame, and low-voltage and high-voltage sections wound onto this frame, the first section of which is connected to the generator, and the high-voltage This section is open, an active needle electrode connected to one end of the transducer core generating a high-frequency electric discharge, and a gas-dynamic unit with an inert gas container, the gas supply tube of which is installed coaxially with the needle electrode and enclosing the transducer, characterized in that the transducer core is made in the form of a plate of conductive electric current of non-magnetic material, the thickness of which is selected less than its width by at least two decimal orders. 2. The device for coagulation and resection of biological tissues according to claim 1, characterized in that the transducer core is provided with at least at least one other plate mounted along its axis at an angle to the plane of the first plate.