JPS6361028B2 - - Google Patents

Description

[Detailed description of the invention]

[Field of the Invention] The present invention relates to an applicator for heating therapy, and particularly to an applicator for heating therapy for heating a predetermined location of a living body using electromagnetic waves. [Conventional technology and its problems] In recent years, heating therapy

[Purpose of the invention]

The present invention improves the disadvantages of the prior art and makes it possible to irradiate electromagnetic waves substantially uniformly, particularly on the electromagnetic wave irradiation surface of the living body surface, thereby eliminating burns that are particularly likely to occur at the center of the electromagnetic wave irradiation surface. Another object of the present invention is to provide a heating therapy applicator that can intensively heat a predetermined location inside a living body. [Summary of the Invention] Accordingly, the present invention provides an applicator for heating therapy that includes an electromagnetic wave power feeding section provided at one end of the case body and a radio wave lens section provided at the other end of the case body. A configuration is adopted in which a thin plate made of a dielectric material having a relatively large relative dielectric constant and a low attenuation of electromagnetic waves is attached to a plurality of metal plates constituting the radio wave lens section. This aims to achieve the above-mentioned purpose. [First Embodiment] The first embodiment of the present invention will be described below with reference to FIGS. 6 to 8.
This will be explained based on the diagram. First, in FIGS. 6 and 7, reference numeral 10 indicates a case body that functions as a waveguide. At the left end of the case body 10 in the figure, there is an electromagnetic wave power supply unit 1.
1, and a radio wave lens section 12 is provided at the right end. In the figure, 11A indicates an excitation antenna, 11B indicates a coaxial connector, 12A, 12
A, . . . each indicate a metal plate for a radio wave lens. Moreover, the electromagnetic wave irradiation opening 10 of this case body 10
A is equipped with a cooling mechanism 13 for living organisms. As shown in the figure, this cooling groove 13 has an abutment support plate 21 made of a dielectric plate curved to fit the living body (see A in FIG. 1), and an abutment support plate 21,
The contact plate 22 is fixed to the outside of the contact plate 22, and a soft film member 23 is sealed to the outside of the contact plate 22. Among these, the contact support plate 21
A square through hole 21A matching the electromagnetic wave irradiation opening 10A of the case body 10 is formed in the center of the case body 10, and a square cutout hole larger than the square through hole 21A is formed in the contact plate as shown in FIG. 22, thereby creating a structure in which each cooling liquid in the case body 10 and the cooling mechanism 13 can flow very naturally. In this embodiment, the cooling liquid used in the cooling mechanism 13 is water (relative permittivity ε _r =80.36; 20° C., measurement wavelength ∞). At the center of the upper surface of the case body 10 in FIG.
A is provided, and this coolant outflow portion 13B is located at 4 of the contact support plate 21 as shown in FIGS. 6 and 7.
The cooling liquid is provided at a corner so that the cooling liquid can cool the entire area from the inside of the case body 10 to the surface of the living body A closely and effectively. As described above, the radio wave lens section 12 is formed of a plurality of metal plates 12A, 12A, . We are now able to take full advantage of its effects. In addition, the cooling mechanism 13
As described above, a soft dielectric film member 23 is attached to the outer end surface of the body A (see FIG. 1) in order to promote adhesion with the living body A (see FIG. 1). On the other hand, as shown in FIG. 7, a dielectric plate 30 with low loss and a relatively large dielectric constant is attached to the inner wall of the case body 10. Here, the dielectric member used is, for example, a titanium sintered alloy. This titanium sintered alloy (barium titanate) is generally widely known as being able to obtain dielectric constants with different values over a wide range depending on the size of the particles. in this case,
The dielectric plate 30 is attached to an inner wall that is flat in the direction of the electric field of electromagnetic waves. As a result,
Inside the case body 10, the electric field distribution is as shown in FIG. 8, and the energy of the electromagnetic waves is not concentrated in the center but is substantially uniform, which has the advantage that the focusing function of the radio wave lens portion 12 can be fully demonstrated. Each metal plate 12A, 12A of the radio wave lens 12 part,
... are attached with thin plates 40, 40, ... made of a dielectric member made of the same material as the dielectric member 30 provided on the inner wall of the case body 10. Therefore, it is possible to prevent the centralization of the electric field distribution shown in FIG. 5 2 and FIG. becomes. As a result, it is possible to prevent the lattice-like overheating damage that occurs in response to the electric field strength on the biological surface during heating therapy, to cool the biological surface (incidence surface) and to uniformly irradiate electromagnetic waves, and at the same time to An ideal applicator for heating therapy is obtained in which it is possible to intensively heat a location by the action of the radio wave lens section 12. Further, 14 indicates a drainage means for removing air.
Furthermore, in addition to the radio wave lens section 12 shown in FIGS. 6 and 7 above, the radio wave lens section 12 has the same dimensions but different intervals as shown in FIG. 9 (however, a>b>c>d>λ/2;λ
is the wavelength), or the metal plates 12A on the inner wall side are arranged at equal intervals as shown in FIG.
For example, use one that is longer than the one in the center.
It may be one using various radio wave lenses. [Second Example] Next, a second example will be described based on FIG. 11. In this embodiment, distribution plates 50, 51, and 52 are arranged to effectively divide electromagnetic waves between the central part of the case body 10 of the first embodiment, that is, between the electromagnetic wave power supply section 11 and the radio wave lens section 12, This distribution plate 5
The central part of 0, 51, 52 is the power supply part 11
The other distribution plates 51 and 52 are each made to protrude toward the radio wave lens section 12 side. The other configurations are the same as those of the conventional example described above. A dotted line T in FIG. 11 indicates that the electromagnetic wave energy is effectively divided by the distribution plates 50, 51, and 52. This has the advantage that the irradiation of the electromagnetic waves onto the surface of the living body can be made more uniform. [Effects of the Invention] As described above, according to the present invention, a thermotherapy device having an electromagnetic wave power feeding section provided at one end of the case body and a radio wave lens section provided at the other end of the main body case. In the applicator, a thin plate made of a dielectric material such as sintered titanium, which has a relatively large relative dielectric constant and has low attenuation of electromagnetic waves, is attached to the metal plate constituting the radio wave lens part, so that it is possible to transmit radio waves. The electric field strength of the electromagnetic waves output from the lens portion is approximately uniform over the entire surface of the opening, and therefore, while gently warming the surface of the living body, it is possible to intensively heat a specific deep part by the action of the radio wave lens described above. It is possible to provide an unprecedented and excellent applicator for heating therapy.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a conventional example, Fig. 2 is an explanatory view showing a radio wave lens section equipped in Fig. 1,
Figures 3 and 4 are explanatory diagrams of the operation of Figure 2, respectively;
5. FIGS. 1 and 2 are explanatory diagrams showing the propagation status of electromagnetic waves in the waveguides shown in FIGS. 1 and 2, respectively. FIG. 6 is a front view showing an embodiment of the present invention. FIG. A sectional view taken along the - line in the figure, Figures 8 1, 2, and 3 are explanatory diagrams each showing the uniformity of electric field intensity due to the action of the dielectric plate, and Figures 9 and 10 each show the radio wave lens section. Another example, FIG. 11 is a sectional view showing a second embodiment. 10... Case body, 11... Electromagnetic wave power supply section,
12...Radio wave lens part, 12A...Metal plate, 40
... Thin plate made of dielectric material, 50, 51, 52
...Distribution board.

Claims (1)

[Scope of Claims] 1. A heating therapy applicator having an electromagnetic wave power supply section provided at one end of the case body and a radio wave lens section provided at the other end of the case body, comprising: 1. An applicator for heating therapy, characterized in that a thin plate made of a dielectric material such as sintered titanium, which has a relatively high dielectric constant and little attenuation of electromagnetic waves, is attached to the metal plate constituting the applicator. 2. Each of the plurality of metal plates constituting the radio lens portion is formed to have exactly the same dimensions, and the spacing between the metal plates is set to become narrower as it approaches the inner wall from the center of the case body. The applicator for heating therapy according to claim 1, characterized in that: 3. Each of the plurality of metal plates constituting the radio lens section has a different length, the distance between the metal plates is set to be the same, and the radiation of the case body of each metal plate is set to be the same. 1. The heating therapy device according to claim 1, wherein the metal plate is arranged on the same line as the opening side and has a longer length as it approaches the inner wall from the center of the case body. applicator. 4. In an applicator for heating therapy that has an electromagnetic wave power supply section provided at one end of the case body and a radio wave lens section provided at the other end of the case body, a metal plate constituting the radio wave lens section is provided with: A thin plate made of a dielectric material such as sintered titanium that has a relatively large dielectric constant and little attenuation of electromagnetic waves is attached between the electromagnetic wave feeding section and the radio wave lens section,
An applicator for heating therapy characterized by being equipped with a distribution plate that internally uniformly distributes electromagnetic waves sent to the radio lens part.