JPH044763Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] (Industrial application field) This invention is based on dielectric, hyperthermia,
This invention relates to a dual-induction heating element.

(Problems to be solved by conventional technology and ideas) The hyperthermia heating method using electromagnetic waves is
It is broadly divided into conventional dielectric heating and induction heating methods.

Dielectric heating can uniformly heat the radio wave irradiation area, but it is difficult to focus the radio waves into a beam shape, and has the disadvantage that only the treatment area cannot be selectively heated.

On the other hand, induction heating has the disadvantage that it cannot be easily heated using a low-power high-frequency magnetic field.

In order to improve these drawbacks, the present invention attempts to provide a hyperthermia heating element that has a structure in which a dielectric material and a magnetic material are combined and integrated to realize dielectric and induction heating at the same time.

[Structure of the invention] (Means for solving the problem) This invention is formed by storing a dielectric material and a magnetic material in divided regions in a capsule-like container.

(Function) If this heating element is installed inside the human body, the magnetic material can be heated with a relatively low output magnetic field during induction heating.

In addition, during dielectric heating, the electric field distribution is changed by using a dielectric material with a relative permittivity larger than that of the body tissue, and the radio wave energy is concentrated on the treatment area.
Alternatively, by using a dielectric material with a large dielectric loss, local heating can be achieved by causing the heating element itself to generate heat.

(Example) This invention will be specifically explained below using an example.

FIG. 1 is a sectional view showing the structure of the heating element of this invention. Reference numeral 1 denotes a capsule-shaped container made of, for example, silicone rubber. This container 1
A magnetic material 2 and a dielectric material 3 are housed inside so as to be divided into upper and lower regions. Thermometers 4, 4 are provided on the surface of the container where the magnetic material 2 and dielectric material 3 are present, and optical fibers 5, 6 are attached to these thermometers and extend outward. There is. Case 7 is a case in which these are integrated.

FIG. 2 shows another embodiment of this invention, which differs from the case in FIG. 1 in that the magnetic material 2 and the dielectric material 3 are housed in container 1 divided into left and right areas. Correspondingly, optical fiber thermometers 4, 4 are inserted through each of the left and right regions.

Here, it is preferable to use powdered magnetic material. Further, it is preferable that the dielectric has a relative dielectric constant larger than that of body tissue or a dielectric material with large dielectric loss. In this invention, fat is used as such a dielectric material.

The operation of this invention will be explained below.

The heating element of this invention is placed locally on the body, and treatment is performed as follows. During induction heating, treatment is performed by applying a high frequency magnetic field to the treatment area with the magnetic body 2 in close contact with the treatment area to cause the magnetic body to generate heat. Furthermore, during dielectric heating, treatment is performed by moving the heating element and then applying electromagnetic wave energy. In this case, the movement is performed by rotating 180° in FIG. 1, and by moving it back and forth in FIG. 2. For dielectric heating, when using a dielectric material with a relative permittivity larger than that of body tissue, it is possible to change the electric field distribution and concentrate electromagnetic wave energy on the treatment area. When a device is used, treatment is performed by generating heat from the heating element itself.
The fiber optic thermometer 4 is thus used to control the electromagnetic energy applied to the heating element.

[Effects of the device] According to the device detailed above, the dielectric and induction heating methods can be used together in a single treatment depending on the case, which has the great effect of ensuring thorough treatment of hyperthermia. There is.

Furthermore, the present invention enables local heating by dielectric heating, which has been considered difficult in the past, and has been implemented with extremely great effects.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a heating element in which a magnetic material and a dielectric material are vertically joined, and FIG. 2 is a sectional view of a heating element in which a magnetic material and a dielectric material are arranged and joined to the left and right sides. 1... Container, 2... Magnetic material, 3... Dielectric material, 4
...Fiber optic temperature sensor.

Claims (1)

[Claims for Utility Model Registration] (1) A heating element for both dielectric and induction purposes, characterized in that a dielectric material and a magnetic material are housed in a capsule-shaped container in divided regions. (2) The dielectric and induction heating element according to claim 1, wherein the container is made of silicone rubber. (3) A dielectric/induction heating element according to claim 1, which uses fat as a dielectric material.