JPS6232036Y2 - - Google Patents

Description

[Detailed description of the device] This device can be inserted from outside the body to treat cancers that occur in body cavities such as the esophagus, trachea, bronchi, or airways such as the nasal cavity, intestines, urethra, vagina, uterus, and fallopian tubes. This invention relates to a heater for body cavity cancer treatment.

In recent years, it has been discovered that many types of cancer cells are sensitive to temperature, and this is called hyperthermia therapy.
Hyperthermia therapy, which destroys cancer cells by heating the tumor to temperatures between ℃ and 43℃, has been proposed and has yielded good results. However, this heating therapy often uses microwaves, and because of the spread of electromagnetic waves, it may heat areas other than the cancerous area. Although this is not a big problem when treating large organs, etc. , it was not very convenient for small organs such as body cavities.

Therefore, in view of the above, the object of this invention is to provide a heater for cancer treatment in a body cavity, which can appropriately heat and treat a cancer site generated in a body cavity.

Therefore, according to this invention, a heater for cancer treatment in a body cavity is constructed, which includes a hollow tubular body and a heating section partially provided on the outer periphery of the hollow tubular body. In this configuration, it is preferable to use a fluororesin tube such as a tetrafluoroethylene resin tube, which does not cause any foreign reactions to the human body, as the hollow tubular body, and the wall of this hollow tubular body is Providing a through hole that allows fluid to pass through may be useful, for example, in the treatment of esophageal cancer. Further, an arbitrary index can be attached to the hollow tubular body to make it convenient to know the insertion length.

Furthermore, it is preferable to provide the heating section of the heater according to this invention with a fluororesin jacket to prevent any strange reaction with human tissue, and if the cancer site is small, the outer periphery of the heating section can be partially can be covered with insulation.
Note that by providing a temperature sensing element in the heating section, only the treatment section can be kept at 41° C. to 43° C. at all times. According to the heater of the present invention having such a configuration, not only can cancer treatment be performed by appropriately heating the inner periphery of the body cavity, but also the heating portion is provided on the outer periphery of the hollow tubular body. Therefore, even when inserted into a body cavity, it is possible to perform treatment without damaging the functions of the esophagus, airway, and other body cavities.

Next, this invention will be explained in more detail with reference to the drawings.

FIG. 1 is a side view of a heater 1 for treating body cavity cancer, showing one embodiment of this invention.

In the figure, a heater 1 for treating body cavity cancer is formed by partially providing a heating section 3 on the outer periphery of a hollow tubular body 2. As shown in FIG. 4 is a pair of lead wires led out from the heating section 3.

Here, the hollow tubular body 2 may be a metal tube or a resin tube, and in the case of a resin tube, tetrafluoroethylene resin, tetrafluoroethylene-hexafluoropropylene copolymer resin, tetrafluoroethylene It is advantageous to use fluororesins such as ethylene difluoride-perfluoroalkyl vinyl ether copolymer resin, trifluorochlorinated ethylene resin, vinylidene difluoride resin, etc., since there is almost no foreign reaction in the human body. Particularly when using tetrafluoroethylene resin, if a porous tubular body is obtained by the method described in Japanese Patent Publication No. 51-18991, a hollow tubular body with high flexibility can be obtained, and the airway and When treating cancer that occurs in the esophagus, etc., it is extremely convenient because it causes less stimulation to healthy areas and can adapt to complex bends. Particularly when used in the airways, using a porous hollow tubular body made of tetrafluoroethylene resin not only allows it to adapt to complex bends, but also to withstand regular and sudden movement of the airways in the radial and axial directions. It can be freely displaced in any direction to accommodate the treatment, which allows the treatment to continue comfortably without applying undue stress to the healthy part or the cancerous part.

Furthermore, the heating section 3 functions to maintain the cancer treatment area at 41°C to 43°C, and a synthetic resin heating element is more suitable than a general metal heating element. Examples of such heating elements include ``Tube-shaped heater'' in JP-A-56-85352, ``Resin-embedded heater'' in JP-A-57-176684, and ``Tape-shaped current carrying body'' in JP-A-57-171218. It can be suitably used. If the heating section 3 using such a heating element is provided with a fluororesin jacket on its outer surface, it is convenient to avoid causing any strange reactions in the human tissue. It is advantageous to provide a thermistor element or other suitable temperature sensing element in the heating section 3, since this can contribute to temperature control of the heating section 3.

The heater 1 for cancer treatment according to this invention having such a configuration is inserted into the esophagus or airway, and is set so that the heating part 3 of the heater 1 faces the cancerous site, and electric power is applied to the lead wire 4. This causes the heating section 3 to generate heat, which heats the cancer site to 41°C to 43°C.
It is treated by keeping it at ℃ to destroy cancer cells.

This cancer treatment heater 1 is removed after the first heating treatment is completed, and may be removed each time after that, but the heater 1 according to this invention is partially attached to the outer periphery of the hollow tubular body 2. Since it has a structure with a heating part installed in it, it will not damage the functions of organs such as the esophagus or airway even if it is left in place in the esophagus or airway.
Treatment can be continued without causing too much fear to the patient.

FIG. 2 shows a side view of a heater 5 for body cavity cancer treatment according to another embodiment of this invention.

In the heater 5 for cancer treatment according to this embodiment, a through hole 7 is provided in the wall of the hollow tubular body 6, and fluids in the body cavity, such as air in the respiratory tract,
Liquid food can pass through the esophagus, and urine can pass through the urethra without significantly increasing fluid resistance. Furthermore, in the embodiment according to this invention, a heat insulator 9 is provided around the outer periphery of the heating section 8, so that only the cancerous site can be appropriately heated.

Therefore, according to this embodiment, early, relatively small cancers can be treated without invading other healthy parts. Further, according to the heater 5 for cancer treatment according to this embodiment, even if the heater 5 is placed in the esophagus for treatment, the fluid that enters between the esophagus and the hollow tubular body 6 will not stay in that part. Through hole 7
This prevents it from falling further down and reaching the stomach, where it stops midway and ferments and corrodes.

FIG. 3 shows a side view of a heater 10 for body cavity cancer treatment according to a further different embodiment of this invention.

This cancer treatment heater 10 is provided with an index 12 that can be identified from the outside of the hollow tubular body 11, so that the insertion length into the body cavity can be recognized. In addition, the cancer treatment heater 10 according to this invention
The lead wire 4 led out from the heating part 13 is housed in a resin thin tube 14 made of, for example, fluororesin,
This resin thin tube 14 is fixed along the outside of the hollow tubular body 11 by adhesive or heat fusion.
Therefore, the heater 10 for cancer treatment according to this embodiment can be safely inserted deep into the body cavity, and can be inserted accurately into the index position corresponding to the length to the cancer site that has been inspected and confirmed in advance. The heating section 13 of the heater 10 can be attached.

This attachment state can be verified using X-rays, and in this case, the lead wire extraction part of the heating section 13 acts as an imaging material, and it is possible to detect the overlap between the heating section 13 and the cancerous site. If the image quality of the lead wire extraction part is insufficient, the heating part 13 or the hollow tubular body 1
Appropriate imaging material can be applied to the required portions of 1.

As described above, according to this invention, a hollow tubular body,
By configuring a heater for body cavity cancer treatment that includes a heating section partially provided on the outer periphery of this hollow tubular body, it is possible to appropriately heat only the cancer site on the inner periphery of the body cavity to treat cancer. Not only can the heating part be provided around the outer periphery of the hollow tubular body, the hollow tubular body continues to exist as a hollow body in the body cavity even during treatment, so it is possible to treat the respiratory tract and esophagus. Alternatively, it is possible to achieve the effect that treatment can be performed without damaging the functions of the urethra, intestinal cavity, and other body cavities.

Furthermore, if the constituent members of the heater for cancer treatment according to this invention are made of fluororesin, there will be almost no abnormal reactions in human tissue, and it will also be possible to use it for indwelling treatment.
In addition, if the hollow tubular body that holds the heating section according to this invention is formed of a porous flexible tubular body such as porous tetrafluoroethylene resin, it will be possible to avoid the possibility of severe movement and deformation with many bends like airways. Treatment can be applied to certain areas without harming the organs.

Note that this invention is not limited to the above-mentioned embodiments; for example, the heating section may be provided at the tip of the hollow tubular body, or on the proximal side, the heating section may be provided at multiple locations, or even Of course, various changes can be made within the scope of the idea of this invention, such as selecting an arbitrary shape for the hollow tubular body and/or the heating section.

[Brief explanation of the drawing]

Fig. 1 is a side view of a heater for body cavity cancer treatment according to this invention, Fig. 2 is a side view of a heater for body cavity cancer treatment according to another embodiment of this invention, and Fig. 3 is a side view of a heater for body cavity cancer treatment according to another embodiment of this invention. FIG. 2 is a side view of a heater for body cavity cancer treatment according to an example. 1, 5, 10: Heater for body cavity cancer treatment, 2,
6, 11: hollow tubular body, 3, 8, 13: heating section,
4: Lead wire, 9: Heat insulator, 12: Index, 14:
Resin tubule.

Claims (1)

[Claims for Utility Model Registration] 1. A heater for cancer treatment in a body cavity, comprising a hollow tubular body and a heating section partially provided on the outer periphery of the hollow tubular body. 2. Scope of Utility Model Registration In the body cavity cancer treatment heater described in claim 1, the body cavity is characterized in that the hollow tubular body has a through hole in the wall that allows fluid in the body cavity to pass through. Treatment heater. 3. The heater for cancer treatment in a body cavity according to claim 1 or 2, wherein the hollow tubular body is provided with an indicator that allows the length of insertion to be recognized. Heater for treatment of genital cancer. 4. Scope of Utility Model Registration The heater for body cavity cancer treatment according to any one of claims 1 to 3, wherein the hollow tubular body is made of a fluororesin tube. . 5 Utility Model Registration Claims The heater for body cavity cancer treatment according to any one of claims 1 to 4, wherein the heating part has a fluororesin outer covering. heater. 6 Utility Model Registration Claims The heater for body cavity cancer treatment according to any one of claims 1 to 5, characterized in that the heating part has a temperature sensing element. . 7. Scope of Utility Model Registration Claims The heater for body cavity cancer treatment according to any one of claims 1 to 6, characterized in that the heating part is provided with a heat insulator that partially covers the outer circumference thereof. Heater for body cavity cancer treatment.