JPH0530431Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a hyperthermia device used for heating treatment of cancer, etc.

[Conventional technology] Conventionally, applicators that emit electromagnetic waves (high-frequency waves, ultra-high frequency waves (microwaves)), ultrasonic waves, etc.
An example of a hyperthermia device for heating and treating cancer patients is the one shown in FIG. 3.

This conventional hyperthermia device is suitable for case 1
An ultrasonic transducer 11 is attached to the ultrasonic transducer 11, and the ultrasonic waves from the ultrasonic transducer 11 are focused by an acoustic lens 12 and enter the heating region of the affected part of the living body to heat it. In Fig. 3, 13 is circulating water for cooling;
Reference numerals 14 and 15 indicate an inlet and an inlet for circulating water, 16 a gasket, and 17 a plastic or rubber thin film having an acoustic impedance close to that of a living body, which is provided at a portion that comes into contact with a living body.

[Problems to be solved by the invention] In this conventional hyperthermia device, the ultrasonic transducer and the acoustic lens are fixedly attached, so the heating area to be heated is specified, and the heating area cannot be heated. There is a problem that the area cannot be changed. Also, instead of an acoustic lens,
Although the heating area can be varied using a phase control device such as a phased array, there is a problem that the device becomes complicated and expensive.

[Means for solving the problem] In order to solve the problem, the present invention fixes an ultrasonic transducer inside a cylindrical case, attaches a thin film to the lower part of the ultrasonic transducer, and installs a cooling device inside the ultrasonic transducer. It is designed to accommodate circulating water, and several types of reflectors with different reflection states can be replaced and attached to the top of the cylindrical case.

[Example] FIGS. 1 and 2 show a hyperthermia device according to an example of the present invention. An ultrasonic transducer 2 is fixed inside the cylindrical case 1 by adhesive or the like, and a reflector 3 made of aluminum or the like is detachably attached to the upper part of the cylindrical case 1 by screwing. At the bottom of the cylindrical case 1, there is a gasket 5 for preventing a thin film 4 made of plastic or rubber.
They are attached in close contact with each other, and the cooling circulating water 6 is accommodated therein. In the figure, 7 and 8 are circulating water inlets and outlets, and 9 is a waterproof gasket.

Here, the above-mentioned reflector 3 has a reflection direction of the ultrasonic wave,
Several types with different focusing parts will be prepared.

With this configuration, when ultrasonic waves are emitted from the ultrasonic transducer 2, the ultrasonic waves are reflected and focused by the reflector 3, enter the living body through the circulating water 6 and the thin film 4, and heat the heating area. Warm up. Here, if you replace the reflector 3 with another one as needed and install it,
It is possible to heat a different area from the above.

Note that if the circulating water outlet 8 is provided at the top, it is convenient to remove air bubbles inside when replacing and attaching the reflector 3.

[Effects of the invention] As explained above, according to the hyperthermia device of the invention, the reflector is detachably provided in the cylindrical case, so when changing the heating area, it is only necessary to replace the reflector. The unique structure allows the heating area to be easily changed, and it is also useful for draining air bubbles generated during treatment.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a hyperthermia device, FIG. 2 is a plan sectional view thereof, and FIG. 3 is a longitudinal sectional view of a conventional hyperthermia device. 1...Cylindrical case, 2...Ultrasonic transducer, 3
... Reflector, 4... Thin film, 6... Circulating water.

Claims (1)

[Scope of utility model claims] Consisting of a cylindrical case in which an ultrasonic transducer is fixed, a thin film is adhered to the bottom, and circulating water is housed inside, and a reflector is detachably installed on the top of the cylindrical case. A hyperthermia device featuring: