SU1553142A1 - Radiator for microwave therapy of cavitary organs - Google Patents

Abstract

The invention is used for physiotherapeutic heating of local areas of tubular organs. The purpose of the invention is to create a local heating zone with an anaxial distribution of the floor at the working end of the radiator. The emitter is a coaxial resonator, comprising a housing 1, made in the form of a dielectric sleeve, the axis of which has an internal conductor 2, made in the form of a metal rod connected to the central core 3 of the coaxial electromagnetic energy input 4. Outside the housing 1, an external conductor 5 is installed, made in the form of a metal tube and connected to the screen 6 of the coaxial input 4. On the side surface of the cylindrical conductor 5 with uniform pitch transverse grooves 7 are made the same width with height decreasing with distance from the working end. The base of all the slots lie in the same plane making an angle of 5–20 ° with the axis of the cylindrical conductor 5. The outer conductor 5 can be connected to the inner 2 jumper 9. The emitter is provided with a removable dielectric housing. The device can be effectively used in the treatment of diseases such as cystitis and prostatitis, and the like. 2 Il.

Description

1

The invention relates to a melicing technique and is used for the fi eterative and therapeutic warming up of local areas of cavitary organons.

The purpose of the invention is the creation of a local heating zone with an anaxal distribution of the floor of the working radiator

FIG. 1 shows the design of the radiator; in fig. 2-fragment of the second projection of the radiator.

The emitter is a coaxial resonator, comprising a housing 1, made in the form of a dielectric sleeve, but the axis of which has an inner conductor 2, made in the form of a metal rod connected to the central core of the coaxial electromagnetic energy supply 4, outside the case I is installed outer conductor 5, made in the form of a metal cylindrical tube and connected to the screen 6 by coaxially introducing electromagnetic energy - i 4 On the side surface of the cylindrical conductor 5 with uniform width - IOM transverse grooves 7 are made of equal width with the height decreasing as the distance from the working torus. The bases of all the azopes lie in the same plane, which makes an angle of 5 to 20 ° C with the axis of the cylindrical conductor 5. The external propeller 5 at the working end of the radiator can be short-circuited to the inner conductor 2 with a metal bridge 9 for example, from polystyrene) by a case 10, which can be sterilized and leaked.

The device works as follows

From a microwave generator through a standard coaxial cable with a wave resistance of 50.55 Ohm (not shown) electromagnetic energy is supplied to the coaxial input 4 The wave impedance of coaxial input 4 is chosen equal to the wave resistance of the coaxial cable. Further, the electromagnetic wave is induced and propagated between the inner 2 and outer 5 conductors. If it is necessary to ensure matching the frequency bandwidth, the inner diameter B of the outer conductor 5 and the diameter (1 of the inner conductor 2 choose the outcome and, to obtain the same characteristic impedance at the input section P of the electrode as the characteristic impedance of the coaxial electromagnetic energy input 4 according to the formula

Z- -fiOln-b. (I)

where p (e-% 2) is the relative dielectric constant of housing material I

Since in the outer conductor 5 there are transverse grooves 7. crossing the longitudinal current, the electromagnetic field is excited outside the grooves and the more interesting the longer the arcs are. The presence of transverse grooves 7 leads to the appearance of a deceleration of an electromagnetic wave, increasing with distance from the section R. The deceleration of the wave on the one hand leads to an increase in the concentration of the field Yu of the electromagnetic wave, and on the other hand, remains less than the deceleration of the electromagnetic wave in the heated tissue x, provides radiation of electromagnetic energy in the tissue. The distribution of the electro magnetic field along the length of the electrode has an anaxial distribution with a maximum of the field in the plane of symmetry passing through the midpoints of the arcs. The maximum heating intensity is concentrated at the end of the electrode that is opposite to the coaxial bedroom entrance 4. This is achieved by choosing such a slope of the base plane in which the deceleration of the electromagnetic wave at the opposite end of the coaxial 4 input of the electrolyte TP ° D3 is optimal for the radiated power. The angle Y between the axis of the cylindrical conductor and the plane of the bases of the arcs is determined experimentally and is equal to 5-20% for optimal distribution of energy. When choosing the diameters b and a according to the formula (I) 30, the wave resistance smoothly varies along the length of the electrode, due to which a non-resonant mode is performed that does not require the adjustment of the generator when the nature of the load changes.

The radiator can be effectively used in the treatment of diseases such as cystitis, prostatitis, etc., where local action is required on a certain part of the cavity organ.

40

Claims (1)

Invention Formula A radiator for microwave tepia of abdominal organs, containing a dielectric housing, inside which is installed a radiating element connected to a bedroom energy input and made in the form of a cylindrical central core and outer conductor, with a space between the conductors, a dielectric, characterized by creating a local heating zone .50 with anaxial distribution of the floor of the working torus, on a continuous side surface of a cylindrical conductor with uniform pitch, transverse grooves of the same width with height, decreasing with distance from the working torus, with the bases of all the slots lying in the same plane making an angle of 5 - 20 with the axis of the cylindrical conductor. Invention Formula W FIG. 2