JPS6161819B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an applicator for effective biological heating in thermotherapy.

Hyperthermia therapy is a method of heating part or all of the human body to a temperature of approximately 42°C to treat various diseases and malignant tumors, and is effective against many diseases such as psoriasis, syphilis, and colds, as well as cancer. This has been confirmed through basic medical research, and additional tests are currently being conducted to confirm clinical effectiveness.

There are various heating methods, including local heating methods such as microwave irradiation, high-frequency induction, magnetic field heating, and ultrasonic heating. In order to heat the body without causing heat damage, the applicator part that injects energy into the human body needs to be devised.

Although the present invention has been implemented in particular with respect to high frequency induction heating among such heating methods, it is not limited thereto.

As a high-frequency heating applicator, the inventor has already filed Utility Application No. 57-110561 (Utility Model Application No. 59-14613),
Based on Utility Model Application No. 57-132227 (Utility Model Application No. 59-36322), we have been conducting prototype experiments on a useful applicator that can perform effective heating in various clinical situations. As a result of manufacturing an applicator with a pull-out function and conducting various experiments, we concluded that it is clinically effective and useful, so we are hereby filing a patent application.

Compared to body surface applicators, in-vivo applicators can not only heat localized areas with less power, but also can heat organs within body cavities much more accurately and effectively than when heating from the body surface. It makes it seem possible.

In addition, it is most desirable from a therapeutic perspective to make such an in-vivo applicator a structure that can be removed without surgery after the completion of heating therapy, and this will greatly expand the scope of application of heating therapy. This can be expanded to.

The present invention will be explained in detail below with reference to Examples.

The first embodiment (shown in Figures 1 and 2) is a tube spiral applicator with a thin-walled, soft
An electrode 2 made of a flexible dense copper coil is inserted over its entire length into an outer envelope 1 made of a PVC tube, and at the same time the copper coil is energized, a saline solution for cooling is applied as shown by the arrow in the figure. This is done at the same time as feeding, and the cooling saline solution is extracted through a PVC tube outside the copper coil. In this case, the spiral-shaped head closely contacts the implantation site to enable effective heating, and can be pulled out and removed as is after treatment is completed.

In the second embodiment (shown in FIGS. 3 and 4), an electrode 4 made of a flexible close-wound copper coil is wound in a spiral shape in an outer envelope 3 made of a thin-walled conductive rubber sac. The structure is such that the copper coil is used to supply electricity and feed the saline solution for cooling, and the sac serves as the outlet. In this case, after the treatment is completed, the spiral electrode 4 can be first extracted from the outer envelope 3, and then the outer envelope 3 can be removed from the implantation site. In the third embodiment (shown in the fifth figure), an electrode 5 made of a thin aluminum plate is wrapped in an outer envelope 6 made of a conductive rubber sac.
An inlet 8 and an outlet 8' for cooling saline are provided, and a conductive wire 7 is passed through one of the channels to connect to the electrode 5. Although the applicator having such a structure cannot be removed as it is, if the aluminum plate 5 is melted by flowing dilute acid, the rubber sac 6 can be easily removed.

In the fourth embodiment (shown in the sixth figure), a copper pipe-shaped electrode 10 for injecting the cooling saline solution is placed inside an outer envelope 9 made of a thin conductive rubber sac, and the copper pipe is energized. However, with this alone,
Since the effective electrode area is insufficient and a sufficient dielectric current cannot flow, sufficient heating characteristics can be obtained by circulating a liquid metal such as mercury as a cooling liquid. In this case as well, the outer envelope can be removed along with the copper pipe and cooling fluid after the treatment is complete. Furthermore, in the fifth embodiment, a collagen membrane that is absorbed and decomposed by the living body was used in place of the conductive rubber sack 9 of the fourth embodiment. Although this sutsuku is not soft enough to be removed, it is absorbed and broken down by enzymes in the human body several months after use, and has the same effect as if it were removed.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram showing the first embodiment of the applicator of the present invention, FIG. 2 is a partially enlarged sectional view thereof, FIG. 3 is a schematic explanatory diagram showing the second embodiment, and FIG. A partially enlarged sectional view, FIG. 5 is a schematic explanatory diagram showing the third embodiment, and FIG. 6 is a schematic explanatory diagram showing the fourth and fifth embodiments. 1: Soft PVC tube as outer envelope, 2: Copper coil as electrode, 3: Conductive rubber sac as outer envelope, 4: Copper coil as electrode, 5: Electrode, 6: Conductive rubber sac as outer envelope, 7: Conductive wire , 8: Cooling saline solution inlet, 8': Cooling saline solution outlet, 9: Conductive rubber sac serving as outer package, 10:
copper pipe.

Claims (1)

[Claims] 1. A local heating applicator that includes an electrode with high electrical conductivity used for thermotherapy and has an applicator outer envelope that closely contacts the implantation site with a cooling medium circulating inside, wherein the electrode and the applicator outer envelope are A removable in-vivo implantable applicator characterized in that it can be extracted or removed from an implantation site by mechanical, chemical, physical, or physiological treatment.